/* engineeringdevotion.com — consolidated stylesheet
   Built 2026-09-06. Do not edit by hand; edit the sources and rebuild.
   Sources: bootstrap 5.3.3 (subset), style.css, lecture-style.css,
   cls-fix.css, and 41 shared inline blocks.

   Each source is scoped to a class on <html> so that every page keeps
   exactly the cascade it had when the files were separate:
     .ed-bs       bootstrap subset
     .ed-site     style.css
     .ed-lecture  lecture-style.css
     .ed-cls      cls-fix.css
     .edb-xxxxxxx one formerly-inline <style> block
*/

@keyframes progress-bar-stripes{0%{background-position-x:1rem}}
@keyframes spinner-border{to{transform:rotate(360deg)}}
@keyframes spinner-grow{0%{transform:scale(0)}50%{opacity:1;transform:none}}
@keyframes placeholder-glow{50%{opacity:.2}}
@keyframes placeholder-wave{100%{-webkit-mask-position:-200% 0%;mask-position:-200% 0%}}
@font-face {
  font-family: "Jakarta Fallback";
  src: local("Segoe UI"), local("Roboto"), local("Helvetica Neue"), local("Arial");
  size-adjust: 105%;
  ascent-override: 96%;
  descent-override: 24%;
  line-gap-override: 0%;
}
@font-face {
  font-family: "DM Serif Fallback";
  src: local("Georgia"), local("Times New Roman"), local("Times");
  size-adjust: 108%;
  ascent-override: 92%;
  descent-override: 26%;
  line-gap-override: 0%;
}

/* ============ bootstrap subset ============ */
:root:where(.ed-bs), :where(html.ed-bs) [data-bs-theme=light]{--bs-blue:#0d6efd;--bs-indigo:#6610f2;--bs-purple:#6f42c1;--bs-pink:#d63384;--bs-red:#dc3545;--bs-orange:#fd7e14;--bs-yellow:#ffc107;--bs-green:#198754;--bs-teal:#20c997;--bs-cyan:#0dcaf0;--bs-black:#000;--bs-white:#fff;--bs-gray:#6c757d;--bs-gray-dark:#343a40;--bs-gray-100:#f8f9fa;--bs-gray-200:#e9ecef;--bs-gray-300:#dee2e6;--bs-gray-400:#ced4da;--bs-gray-500:#adb5bd;--bs-gray-600:#6c757d;--bs-gray-700:#495057;--bs-gray-800:#343a40;--bs-gray-900:#212529;--bs-primary:#0d6efd;--bs-secondary:#6c757d;--bs-success:#198754;--bs-info:#0dcaf0;--bs-warning:#ffc107;--bs-danger:#dc3545;--bs-light:#f8f9fa;--bs-dark:#212529;--bs-primary-rgb:13,110,253;--bs-secondary-rgb:108,117,125;--bs-success-rgb:25,135,84;--bs-info-rgb:13,202,240;--bs-warning-rgb:255,193,7;--bs-danger-rgb:220,53,69;--bs-light-rgb:248,249,250;--bs-dark-rgb:33,37,41;--bs-primary-text-emphasis:#052c65;--bs-secondary-text-emphasis:#2b2f32;--bs-success-text-emphasis:#0a3622;--bs-info-text-emphasis:#055160;--bs-warning-text-emphasis:#664d03;--bs-danger-text-emphasis:#58151c;--bs-light-text-emphasis:#495057;--bs-dark-text-emphasis:#495057;--bs-primary-bg-subtle:#cfe2ff;--bs-secondary-bg-subtle:#e2e3e5;--bs-success-bg-subtle:#d1e7dd;--bs-info-bg-subtle:#cff4fc;--bs-warning-bg-subtle:#fff3cd;--bs-danger-bg-subtle:#f8d7da;--bs-light-bg-subtle:#fcfcfd;--bs-dark-bg-subtle:#ced4da;--bs-primary-border-subtle:#9ec5fe;--bs-secondary-border-subtle:#c4c8cb;--bs-success-border-subtle:#a3cfbb;--bs-info-border-subtle:#9eeaf9;--bs-warning-border-subtle:#ffe69c;--bs-danger-border-subtle:#f1aeb5;--bs-light-border-subtle:#e9ecef;--bs-dark-border-subtle:#adb5bd;--bs-white-rgb:255,255,255;--bs-black-rgb:0,0,0;--bs-font-sans-serif:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans","Liberation Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--bs-font-monospace:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--bs-gradient:linear-gradient(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0));--bs-body-font-family:var(--bs-font-sans-serif);--bs-body-font-size:1rem;--bs-body-font-weight:400;--bs-body-line-height:1.5;--bs-body-color:#212529;--bs-body-color-rgb:33,37,41;--bs-body-bg:#fff;--bs-body-bg-rgb:255,255,255;--bs-emphasis-color:#000;--bs-emphasis-color-rgb:0,0,0;--bs-secondary-color:rgba(33, 37, 41, 0.75);--bs-secondary-color-rgb:33,37,41;--bs-secondary-bg:#e9ecef;--bs-secondary-bg-rgb:233,236,239;--bs-tertiary-color:rgba(33, 37, 41, 0.5);--bs-tertiary-color-rgb:33,37,41;--bs-tertiary-bg:#f8f9fa;--bs-tertiary-bg-rgb:248,249,250;--bs-heading-color:inherit;--bs-link-color:#0d6efd;--bs-link-color-rgb:13,110,253;--bs-link-decoration:underline;--bs-link-hover-color:#0a58ca;--bs-link-hover-color-rgb:10,88,202;--bs-code-color:#d63384;--bs-highlight-color:#212529;--bs-highlight-bg:#fff3cd;--bs-border-width:1px;--bs-border-style:solid;--bs-border-color:#dee2e6;--bs-border-color-translucent:rgba(0, 0, 0, 0.175);--bs-border-radius:0.375rem;--bs-border-radius-sm:0.25rem;--bs-border-radius-lg:0.5rem;--bs-border-radius-xl:1rem;--bs-border-radius-xxl:2rem;--bs-border-radius-2xl:var(--bs-border-radius-xxl);--bs-border-radius-pill:50rem;--bs-box-shadow:0 0.5rem 1rem rgba(0, 0, 0, 0.15);--bs-box-shadow-sm:0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);--bs-box-shadow-lg:0 1rem 3rem rgba(0, 0, 0, 0.175);--bs-box-shadow-inset:inset 0 1px 2px rgba(0, 0, 0, 0.075);--bs-focus-ring-width:0.25rem;--bs-focus-ring-opacity:0.25;--bs-focus-ring-color:rgba(13, 110, 253, 0.25);--bs-form-valid-color:#198754;--bs-form-valid-border-color:#198754;--bs-form-invalid-color:#dc3545;--bs-form-invalid-border-color:#dc3545}
:where(html.ed-bs) [data-bs-theme=dark]{color-scheme:dark;--bs-body-color:#dee2e6;--bs-body-color-rgb:222,226,230;--bs-body-bg:#212529;--bs-body-bg-rgb:33,37,41;--bs-emphasis-color:#fff;--bs-emphasis-color-rgb:255,255,255;--bs-secondary-color:rgba(222, 226, 230, 0.75);--bs-secondary-color-rgb:222,226,230;--bs-secondary-bg:#343a40;--bs-secondary-bg-rgb:52,58,64;--bs-tertiary-color:rgba(222, 226, 230, 0.5);--bs-tertiary-color-rgb:222,226,230;--bs-tertiary-bg:#2b3035;--bs-tertiary-bg-rgb:43,48,53;--bs-primary-text-emphasis:#6ea8fe;--bs-secondary-text-emphasis:#a7acb1;--bs-success-text-emphasis:#75b798;--bs-info-text-emphasis:#6edff6;--bs-warning-text-emphasis:#ffda6a;--bs-danger-text-emphasis:#ea868f;--bs-light-text-emphasis:#f8f9fa;--bs-dark-text-emphasis:#dee2e6;--bs-primary-bg-subtle:#031633;--bs-secondary-bg-subtle:#161719;--bs-success-bg-subtle:#051b11;--bs-info-bg-subtle:#032830;--bs-warning-bg-subtle:#332701;--bs-danger-bg-subtle:#2c0b0e;--bs-light-bg-subtle:#343a40;--bs-dark-bg-subtle:#1a1d20;--bs-primary-border-subtle:#084298;--bs-secondary-border-subtle:#41464b;--bs-success-border-subtle:#0f5132;--bs-info-border-subtle:#087990;--bs-warning-border-subtle:#997404;--bs-danger-border-subtle:#842029;--bs-light-border-subtle:#495057;--bs-dark-border-subtle:#343a40;--bs-heading-color:inherit;--bs-link-color:#6ea8fe;--bs-link-hover-color:#8bb9fe;--bs-link-color-rgb:110,168,254;--bs-link-hover-color-rgb:139,185,254;--bs-code-color:#e685b5;--bs-highlight-color:#dee2e6;--bs-highlight-bg:#664d03;--bs-border-color:#495057;--bs-border-color-translucent:rgba(255, 255, 255, 0.15);--bs-form-valid-color:#75b798;--bs-form-valid-border-color:#75b798;--bs-form-invalid-color:#ea868f;--bs-form-invalid-border-color:#ea868f}
:where(html.ed-bs), :where(html.ed-bs) *, :where(html.ed-bs) ::after, :where(html.ed-bs) ::before{box-sizing:border-box}
@media (prefers-reduced-motion:no-preference){
  :root:where(.ed-bs){scroll-behavior:smooth}
}
:where(html.ed-bs) body{margin:0;font-family:var(--bs-body-font-family);font-size:var(--bs-body-font-size);font-weight:var(--bs-body-font-weight);line-height:var(--bs-body-line-height);color:var(--bs-body-color);text-align:var(--bs-body-text-align);background-color:var(--bs-body-bg);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
:where(html.ed-bs) hr{margin:1rem 0;color:inherit;border:0;border-top:var(--bs-border-width) solid;opacity:.25}
:where(html.ed-bs) .h1, :where(html.ed-bs) .h2, :where(html.ed-bs) .h3, :where(html.ed-bs) .h4, :where(html.ed-bs) .h5, :where(html.ed-bs) .h6, :where(html.ed-bs) h1, :where(html.ed-bs) h2, :where(html.ed-bs) h3, :where(html.ed-bs) h4, :where(html.ed-bs) h5, :where(html.ed-bs) h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2;color:var(--bs-heading-color)}
:where(html.ed-bs) .h1, :where(html.ed-bs) h1{font-size:calc(1.375rem + 1.5vw)}
@media (min-width:1200px){
  :where(html.ed-bs) .h1, :where(html.ed-bs) h1{font-size:2.5rem}
}
:where(html.ed-bs) .h2, :where(html.ed-bs) h2{font-size:calc(1.325rem + .9vw)}
@media (min-width:1200px){
  :where(html.ed-bs) .h2, :where(html.ed-bs) h2{font-size:2rem}
}
:where(html.ed-bs) .h3, :where(html.ed-bs) h3{font-size:calc(1.3rem + .6vw)}
@media (min-width:1200px){
  :where(html.ed-bs) .h3, :where(html.ed-bs) h3{font-size:1.75rem}
}
:where(html.ed-bs) .h4, :where(html.ed-bs) h4{font-size:calc(1.275rem + .3vw)}
@media (min-width:1200px){
  :where(html.ed-bs) .h4, :where(html.ed-bs) h4{font-size:1.5rem}
}
:where(html.ed-bs) .h5, :where(html.ed-bs) h5{font-size:1.25rem}
:where(html.ed-bs) .h6, :where(html.ed-bs) h6{font-size:1rem}
:where(html.ed-bs) p{margin-top:0;margin-bottom:1rem}
:where(html.ed-bs) abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}
:where(html.ed-bs) address{margin-bottom:1rem;font-style:normal;line-height:inherit}
:where(html.ed-bs) ol, :where(html.ed-bs) ul{padding-left:2rem}
:where(html.ed-bs) dl, :where(html.ed-bs) ol, :where(html.ed-bs) ul{margin-top:0;margin-bottom:1rem}
:where(html.ed-bs) ol ol, :where(html.ed-bs) ol ul, :where(html.ed-bs) ul ol, :where(html.ed-bs) ul ul{margin-bottom:0}
:where(html.ed-bs) dt{font-weight:700}
:where(html.ed-bs) dd{margin-bottom:.5rem;margin-left:0}
:where(html.ed-bs) blockquote{margin:0 0 1rem}
:where(html.ed-bs) b, :where(html.ed-bs) strong{font-weight:bolder}
:where(html.ed-bs) .small, :where(html.ed-bs) small{font-size:.875em}
:where(html.ed-bs) .mark, :where(html.ed-bs) mark{padding:.1875em;color:var(--bs-highlight-color);background-color:var(--bs-highlight-bg)}
:where(html.ed-bs) sub, :where(html.ed-bs) sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}
:where(html.ed-bs) sub{bottom:-.25em}
:where(html.ed-bs) sup{top:-.5em}
:where(html.ed-bs) a{color:rgba(var(--bs-link-color-rgb),var(--bs-link-opacity,1));text-decoration:underline}
:where(html.ed-bs) a:hover{--bs-link-color-rgb:var(--bs-link-hover-color-rgb)}
:where(html.ed-bs) a:not([href]):not([class]), :where(html.ed-bs) a:not([href]):not([class]):hover{color:inherit;text-decoration:none}
:where(html.ed-bs) code, :where(html.ed-bs) kbd, :where(html.ed-bs) pre, :where(html.ed-bs) samp{font-family:var(--bs-font-monospace);font-size:1em}
:where(html.ed-bs) pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}
:where(html.ed-bs) pre code{font-size:inherit;color:inherit;word-break:normal}
:where(html.ed-bs) code{font-size:.875em;color:var(--bs-code-color);word-wrap:break-word}
:where(html.ed-bs) a>code{color:inherit}
:where(html.ed-bs) kbd{padding:.1875rem .375rem;font-size:.875em;color:var(--bs-body-bg);background-color:var(--bs-body-color);border-radius:.25rem}
:where(html.ed-bs) kbd kbd{padding:0;font-size:1em}
:where(html.ed-bs) figure{margin:0 0 1rem}
:where(html.ed-bs) img, :where(html.ed-bs) svg{vertical-align:middle}
:where(html.ed-bs) table{caption-side:bottom;border-collapse:collapse}
:where(html.ed-bs) caption{padding-top:.5rem;padding-bottom:.5rem;color:var(--bs-secondary-color);text-align:left}
:where(html.ed-bs) th{text-align:inherit;text-align:-webkit-match-parent}
:where(html.ed-bs) tbody, :where(html.ed-bs) td, :where(html.ed-bs) tfoot, :where(html.ed-bs) th, :where(html.ed-bs) thead, :where(html.ed-bs) tr{border-color:inherit;border-style:solid;border-width:0}
:where(html.ed-bs) label{display:inline-block}
:where(html.ed-bs) button{border-radius:0}
:where(html.ed-bs) button:focus:not(:focus-visible){outline:0}
:where(html.ed-bs) button, :where(html.ed-bs) input, :where(html.ed-bs) optgroup, :where(html.ed-bs) select, :where(html.ed-bs) textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}
:where(html.ed-bs) button, :where(html.ed-bs) select{text-transform:none}
:where(html.ed-bs) [role=button]{cursor:pointer}
:where(html.ed-bs) select{word-wrap:normal}
:where(html.ed-bs) select:disabled{opacity:1}
:where(html.ed-bs) [list]:not([type=date]):not([type=datetime-local]):not([type=month]):not([type=week]):not([type=time])::-webkit-calendar-picker-indicator{display:none!important}
:where(html.ed-bs) [type=button], :where(html.ed-bs) [type=reset], :where(html.ed-bs) [type=submit], :where(html.ed-bs) button{-webkit-appearance:button}
:where(html.ed-bs) [type=button]:not(:disabled), :where(html.ed-bs) [type=reset]:not(:disabled), :where(html.ed-bs) [type=submit]:not(:disabled), :where(html.ed-bs) button:not(:disabled){cursor:pointer}
:where(html.ed-bs) ::-moz-focus-inner{padding:0;border-style:none}
:where(html.ed-bs) textarea{resize:vertical}
:where(html.ed-bs) fieldset{min-width:0;padding:0;margin:0;border:0}
:where(html.ed-bs) legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}
@media (min-width:1200px){
  :where(html.ed-bs) legend{font-size:1.5rem}
}
:where(html.ed-bs) legend+*{clear:left}
:where(html.ed-bs) ::-webkit-datetime-edit-day-field, :where(html.ed-bs) ::-webkit-datetime-edit-fields-wrapper, :where(html.ed-bs) ::-webkit-datetime-edit-hour-field, :where(html.ed-bs) ::-webkit-datetime-edit-minute, :where(html.ed-bs) ::-webkit-datetime-edit-month-field, :where(html.ed-bs) ::-webkit-datetime-edit-text, :where(html.ed-bs) ::-webkit-datetime-edit-year-field{padding:0}
:where(html.ed-bs) ::-webkit-inner-spin-button{height:auto}
:where(html.ed-bs) [type=search]{-webkit-appearance:textfield;outline-offset:-2px}
:where(html.ed-bs) ::-webkit-search-decoration{-webkit-appearance:none}
:where(html.ed-bs) ::-webkit-color-swatch-wrapper{padding:0}
:where(html.ed-bs) ::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}
:where(html.ed-bs) ::file-selector-button{font:inherit;-webkit-appearance:button}
:where(html.ed-bs) output{display:inline-block}
:where(html.ed-bs) iframe{border:0}
:where(html.ed-bs) summary{display:list-item;cursor:pointer}
:where(html.ed-bs) progress{vertical-align:baseline}
:where(html.ed-bs) [hidden]{display:none!important}
:where(html.ed-bs) .lead{font-size:1.25rem;font-weight:300}
:where(html.ed-bs) .display-3{font-size:calc(1.525rem + 3.3vw);font-weight:300;line-height:1.2}
@media (min-width:1200px){
  :where(html.ed-bs) .display-3{font-size:4rem}
}
:where(html.ed-bs) .container, :where(html.ed-bs) .container-fluid, :where(html.ed-bs) .container-lg, :where(html.ed-bs) .container-md, :where(html.ed-bs) .container-sm, :where(html.ed-bs) .container-xl, :where(html.ed-bs) .container-xxl{--bs-gutter-x:1.5rem;--bs-gutter-y:0;width:100%;padding-right:calc(var(--bs-gutter-x) * .5);padding-left:calc(var(--bs-gutter-x) * .5);margin-right:auto;margin-left:auto}
@media (min-width:576px){
  :where(html.ed-bs) .container, :where(html.ed-bs) .container-sm{max-width:540px}
}
@media (min-width:768px){
  :where(html.ed-bs) .container, :where(html.ed-bs) .container-md, :where(html.ed-bs) .container-sm{max-width:720px}
}
@media (min-width:992px){
  :where(html.ed-bs) .container, :where(html.ed-bs) .container-lg, :where(html.ed-bs) .container-md, :where(html.ed-bs) .container-sm{max-width:960px}
}
@media (min-width:1200px){
  :where(html.ed-bs) .container, :where(html.ed-bs) .container-lg, :where(html.ed-bs) .container-md, :where(html.ed-bs) .container-sm, :where(html.ed-bs) .container-xl{max-width:1140px}
}
@media (min-width:1400px){
  :where(html.ed-bs) .container, :where(html.ed-bs) .container-lg, :where(html.ed-bs) .container-md, :where(html.ed-bs) .container-sm, :where(html.ed-bs) .container-xl, :where(html.ed-bs) .container-xxl{max-width:1320px}
}
:root:where(.ed-bs){--bs-breakpoint-xs:0;--bs-breakpoint-sm:576px;--bs-breakpoint-md:768px;--bs-breakpoint-lg:992px;--bs-breakpoint-xl:1200px;--bs-breakpoint-xxl:1400px}
:where(html.ed-bs) .row{--bs-gutter-x:1.5rem;--bs-gutter-y:0;display:flex;flex-wrap:wrap;margin-top:calc(-1 * var(--bs-gutter-y));margin-right:calc(-.5 * var(--bs-gutter-x));margin-left:calc(-.5 * var(--bs-gutter-x))}
:where(html.ed-bs) .row>*{flex-shrink:0;width:100%;max-width:100%;padding-right:calc(var(--bs-gutter-x) * .5);padding-left:calc(var(--bs-gutter-x) * .5);margin-top:var(--bs-gutter-y)}
:where(html.ed-bs) .g-3, :where(html.ed-bs) .gx-3{--bs-gutter-x:1rem}
:where(html.ed-bs) .g-3, :where(html.ed-bs) .gy-3{--bs-gutter-y:1rem}
:where(html.ed-bs) .g-4, :where(html.ed-bs) .gx-4{--bs-gutter-x:1.5rem}
:where(html.ed-bs) .g-4, :where(html.ed-bs) .gy-4{--bs-gutter-y:1.5rem}
:where(html.ed-bs) .g-5, :where(html.ed-bs) .gx-5{--bs-gutter-x:3rem}
:where(html.ed-bs) .g-5, :where(html.ed-bs) .gy-5{--bs-gutter-y:3rem}
@media (min-width:576px){
  :where(html.ed-bs) .col-sm-6{flex:0 0 auto;width:50%}
}
@media (min-width:768px){
  :where(html.ed-bs) .col-md-4{flex:0 0 auto;width:33.33333333%}
  :where(html.ed-bs) .col-md-6{flex:0 0 auto;width:50%}
}
@media (min-width:992px){
  :where(html.ed-bs) .col-lg-3{flex:0 0 auto;width:25%}
  :where(html.ed-bs) .col-lg-4{flex:0 0 auto;width:33.33333333%}
  :where(html.ed-bs) .col-lg-5{flex:0 0 auto;width:41.66666667%}
  :where(html.ed-bs) .col-lg-6{flex:0 0 auto;width:50%}
  :where(html.ed-bs) .col-lg-7{flex:0 0 auto;width:58.33333333%}
  :where(html.ed-bs) .col-lg-8{flex:0 0 auto;width:66.66666667%}
}
:where(html.ed-bs) .table-bordered>:not(caption)>*{border-width:var(--bs-border-width) 0}
:where(html.ed-bs) .table-bordered>:not(caption)>*>*{border-width:0 var(--bs-border-width)}
:where(html.ed-bs) .form-label{margin-bottom:.5rem}
:where(html.ed-bs) .form-control{display:block;width:100%;padding:.375rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;color:var(--bs-body-color);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:var(--bs-body-bg);background-clip:padding-box;border:var(--bs-border-width) solid var(--bs-border-color);border-radius:var(--bs-border-radius);transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .form-control{transition:none}
}
:where(html.ed-bs) .form-control[type=file]{overflow:hidden}
:where(html.ed-bs) .form-control[type=file]:not(:disabled):not([readonly]){cursor:pointer}
:where(html.ed-bs) .form-control:focus{color:var(--bs-body-color);background-color:var(--bs-body-bg);border-color:#86b7fe;outline:0;box-shadow:0 0 0 .25rem rgba(13,110,253,.25)}
:where(html.ed-bs) .form-control::-webkit-date-and-time-value{min-width:85px;height:1.5em;margin:0}
:where(html.ed-bs) .form-control::-webkit-datetime-edit{display:block;padding:0}
:where(html.ed-bs) .form-control::-moz-placeholder{color:var(--bs-secondary-color);opacity:1}
:where(html.ed-bs) .form-control::placeholder{color:var(--bs-secondary-color);opacity:1}
:where(html.ed-bs) .form-control:disabled{background-color:var(--bs-secondary-bg);opacity:1}
:where(html.ed-bs) .form-control::-webkit-file-upload-button{padding:.375rem .75rem;margin:-.375rem -.75rem;-webkit-margin-end:.75rem;margin-inline-end:.75rem;color:var(--bs-body-color);background-color:var(--bs-tertiary-bg);pointer-events:none;border-color:inherit;border-style:solid;border-width:0;border-inline-end-width:var(--bs-border-width);border-radius:0;-webkit-transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out}
:where(html.ed-bs) .form-control::file-selector-button{padding:.375rem .75rem;margin:-.375rem -.75rem;-webkit-margin-end:.75rem;margin-inline-end:.75rem;color:var(--bs-body-color);background-color:var(--bs-tertiary-bg);pointer-events:none;border-color:inherit;border-style:solid;border-width:0;border-inline-end-width:var(--bs-border-width);border-radius:0;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .form-control::-webkit-file-upload-button{-webkit-transition:none;transition:none}
  :where(html.ed-bs) .form-control::file-selector-button{transition:none}
}
:where(html.ed-bs) .form-control:hover:not(:disabled):not([readonly])::-webkit-file-upload-button{background-color:var(--bs-secondary-bg)}
:where(html.ed-bs) .form-control:hover:not(:disabled):not([readonly])::file-selector-button{background-color:var(--bs-secondary-bg)}
:where(html.ed-bs) textarea.form-control{min-height:calc(1.5em + .75rem + calc(var(--bs-border-width) * 2))}
:where(html.ed-bs) .valid-feedback{display:none;width:100%;margin-top:.25rem;font-size:.875em;color:var(--bs-form-valid-color)}
:where(html.ed-bs) .is-valid~.valid-feedback, :where(html.ed-bs) .is-valid~.valid-tooltip, :where(html.ed-bs) .was-validated :valid~.valid-feedback, :where(html.ed-bs) .was-validated :valid~.valid-tooltip{display:block}
:where(html.ed-bs) .form-control.is-valid, :where(html.ed-bs) .was-validated .form-control:valid{border-color:var(--bs-form-valid-border-color);padding-right:calc(1.5em + .75rem);background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right calc(.375em + .1875rem) center;background-size:calc(.75em + .375rem) calc(.75em + .375rem)}
:where(html.ed-bs) .form-control.is-valid:focus, :where(html.ed-bs) .was-validated .form-control:valid:focus{border-color:var(--bs-form-valid-border-color);box-shadow:0 0 0 .25rem rgba(var(--bs-success-rgb),.25)}
:where(html.ed-bs) .was-validated textarea.form-control:valid, :where(html.ed-bs) textarea.form-control.is-valid{padding-right:calc(1.5em + .75rem);background-position:top calc(.375em + .1875rem) right calc(.375em + .1875rem)}
:where(html.ed-bs) .invalid-feedback{display:none;width:100%;margin-top:.25rem;font-size:.875em;color:var(--bs-form-invalid-color)}
:where(html.ed-bs) .is-invalid~.invalid-feedback, :where(html.ed-bs) .is-invalid~.invalid-tooltip, :where(html.ed-bs) .was-validated :invalid~.invalid-feedback, :where(html.ed-bs) .was-validated :invalid~.invalid-tooltip{display:block}
:where(html.ed-bs) .form-control.is-invalid, :where(html.ed-bs) .was-validated .form-control:invalid{border-color:var(--bs-form-invalid-border-color);padding-right:calc(1.5em + .75rem);background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right calc(.375em + .1875rem) center;background-size:calc(.75em + .375rem) calc(.75em + .375rem)}
:where(html.ed-bs) .form-control.is-invalid:focus, :where(html.ed-bs) .was-validated .form-control:invalid:focus{border-color:var(--bs-form-invalid-border-color);box-shadow:0 0 0 .25rem rgba(var(--bs-danger-rgb),.25)}
:where(html.ed-bs) .was-validated textarea.form-control:invalid, :where(html.ed-bs) textarea.form-control.is-invalid{padding-right:calc(1.5em + .75rem);background-position:top calc(.375em + .1875rem) right calc(.375em + .1875rem)}
:where(html.ed-bs) .btn{--bs-btn-padding-x:0.75rem;--bs-btn-padding-y:0.375rem;--bs-btn-font-family: ;--bs-btn-font-size:1rem;--bs-btn-font-weight:400;--bs-btn-line-height:1.5;--bs-btn-color:var(--bs-body-color);--bs-btn-bg:transparent;--bs-btn-border-width:var(--bs-border-width);--bs-btn-border-color:transparent;--bs-btn-border-radius:var(--bs-border-radius);--bs-btn-hover-border-color:transparent;--bs-btn-box-shadow:inset 0 1px 0 rgba(255, 255, 255, 0.15),0 1px 1px rgba(0, 0, 0, 0.075);--bs-btn-disabled-opacity:0.65;--bs-btn-focus-box-shadow:0 0 0 0.25rem rgba(var(--bs-btn-focus-shadow-rgb), .5);display:inline-block;padding:var(--bs-btn-padding-y) var(--bs-btn-padding-x);font-family:var(--bs-btn-font-family);font-size:var(--bs-btn-font-size);font-weight:var(--bs-btn-font-weight);line-height:var(--bs-btn-line-height);color:var(--bs-btn-color);text-align:center;text-decoration:none;vertical-align:middle;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;border:var(--bs-btn-border-width) solid var(--bs-btn-border-color);border-radius:var(--bs-btn-border-radius);background-color:var(--bs-btn-bg);transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .btn{transition:none}
}
:where(html.ed-bs) .btn:hover{color:var(--bs-btn-hover-color);background-color:var(--bs-btn-hover-bg);border-color:var(--bs-btn-hover-border-color)}
:where(html.ed-bs) .btn:focus-visible{color:var(--bs-btn-hover-color);background-color:var(--bs-btn-hover-bg);border-color:var(--bs-btn-hover-border-color);outline:0;box-shadow:var(--bs-btn-focus-box-shadow)}
:where(html.ed-bs) .btn-check:checked+.btn, :where(html.ed-bs) .btn.active, :where(html.ed-bs) .btn.show, :where(html.ed-bs) .btn:first-child:active, :where(html.ed-bs) :not(.btn-check)+.btn:active{color:var(--bs-btn-active-color);background-color:var(--bs-btn-active-bg);border-color:var(--bs-btn-active-border-color)}
:where(html.ed-bs) .btn-check:checked+.btn:focus-visible, :where(html.ed-bs) .btn.active:focus-visible, :where(html.ed-bs) .btn.show:focus-visible, :where(html.ed-bs) .btn:first-child:active:focus-visible, :where(html.ed-bs) :not(.btn-check)+.btn:active:focus-visible{box-shadow:var(--bs-btn-focus-box-shadow)}
:where(html.ed-bs) .btn.disabled, :where(html.ed-bs) .btn:disabled, :where(html.ed-bs) fieldset:disabled .btn{color:var(--bs-btn-disabled-color);pointer-events:none;background-color:var(--bs-btn-disabled-bg);border-color:var(--bs-btn-disabled-border-color);opacity:var(--bs-btn-disabled-opacity)}
:where(html.ed-bs) .btn-primary{--bs-btn-color:#fff;--bs-btn-bg:#0d6efd;--bs-btn-border-color:#0d6efd;--bs-btn-hover-color:#fff;--bs-btn-hover-bg:#0b5ed7;--bs-btn-hover-border-color:#0a58ca;--bs-btn-focus-shadow-rgb:49,132,253;--bs-btn-active-color:#fff;--bs-btn-active-bg:#0a58ca;--bs-btn-active-border-color:#0a53be;--bs-btn-active-shadow:inset 0 3px 5px rgba(0, 0, 0, 0.125);--bs-btn-disabled-color:#fff;--bs-btn-disabled-bg:#0d6efd;--bs-btn-disabled-border-color:#0d6efd}
:where(html.ed-bs) .fade{transition:opacity .15s linear}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .fade{transition:none}
}
:where(html.ed-bs) .fade:not(.show){opacity:0}
:where(html.ed-bs) .collapse:not(.show){display:none}
:where(html.ed-bs) .collapsing{height:0;overflow:hidden;transition:height .35s ease}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .collapsing{transition:none}
}
:where(html.ed-bs) .dropdown, :where(html.ed-bs) .dropdown-center, :where(html.ed-bs) .dropend, :where(html.ed-bs) .dropstart, :where(html.ed-bs) .dropup, :where(html.ed-bs) .dropup-center{position:relative}
:where(html.ed-bs) .dropdown-toggle{white-space:nowrap}
:where(html.ed-bs) .dropdown-toggle::after{display:inline-block;margin-left:.255em;vertical-align:.255em;content:"";border-top:.3em solid;border-right:.3em solid transparent;border-bottom:0;border-left:.3em solid transparent}
:where(html.ed-bs) .dropdown-toggle:empty::after{margin-left:0}
:where(html.ed-bs) .dropdown-menu{--bs-dropdown-zindex:1000;--bs-dropdown-min-width:10rem;--bs-dropdown-padding-x:0;--bs-dropdown-padding-y:0.5rem;--bs-dropdown-spacer:0.125rem;--bs-dropdown-font-size:1rem;--bs-dropdown-color:var(--bs-body-color);--bs-dropdown-bg:var(--bs-body-bg);--bs-dropdown-border-color:var(--bs-border-color-translucent);--bs-dropdown-border-radius:var(--bs-border-radius);--bs-dropdown-border-width:var(--bs-border-width);--bs-dropdown-inner-border-radius:calc(var(--bs-border-radius) - var(--bs-border-width));--bs-dropdown-divider-bg:var(--bs-border-color-translucent);--bs-dropdown-divider-margin-y:0.5rem;--bs-dropdown-box-shadow:var(--bs-box-shadow);--bs-dropdown-link-color:var(--bs-body-color);--bs-dropdown-link-hover-color:var(--bs-body-color);--bs-dropdown-link-hover-bg:var(--bs-tertiary-bg);--bs-dropdown-link-active-color:#fff;--bs-dropdown-link-active-bg:#0d6efd;--bs-dropdown-link-disabled-color:var(--bs-tertiary-color);--bs-dropdown-item-padding-x:1rem;--bs-dropdown-item-padding-y:0.25rem;--bs-dropdown-header-color:#6c757d;--bs-dropdown-header-padding-x:1rem;--bs-dropdown-header-padding-y:0.5rem;position:absolute;z-index:var(--bs-dropdown-zindex);display:none;min-width:var(--bs-dropdown-min-width);padding:var(--bs-dropdown-padding-y) var(--bs-dropdown-padding-x);margin:0;font-size:var(--bs-dropdown-font-size);color:var(--bs-dropdown-color);text-align:left;list-style:none;background-color:var(--bs-dropdown-bg);background-clip:padding-box;border:var(--bs-dropdown-border-width) solid var(--bs-dropdown-border-color);border-radius:var(--bs-dropdown-border-radius)}
:where(html.ed-bs) .dropdown-menu[data-bs-popper]{top:100%;left:0;margin-top:var(--bs-dropdown-spacer)}
:where(html.ed-bs) .dropdown-menu-start{--bs-position:start}
:where(html.ed-bs) .dropdown-menu-start[data-bs-popper]{right:auto;left:0}
:where(html.ed-bs) .dropdown-menu-end{--bs-position:end}
:where(html.ed-bs) .dropdown-menu-end[data-bs-popper]{right:0;left:auto}
:where(html.ed-bs) .dropup .dropdown-menu[data-bs-popper]{top:auto;bottom:100%;margin-top:0;margin-bottom:var(--bs-dropdown-spacer)}
:where(html.ed-bs) .dropup .dropdown-toggle::after{display:inline-block;margin-left:.255em;vertical-align:.255em;content:"";border-top:0;border-right:.3em solid transparent;border-bottom:.3em solid;border-left:.3em solid transparent}
:where(html.ed-bs) .dropup .dropdown-toggle:empty::after{margin-left:0}
:where(html.ed-bs) .dropend .dropdown-menu[data-bs-popper]{top:0;right:auto;left:100%;margin-top:0;margin-left:var(--bs-dropdown-spacer)}
:where(html.ed-bs) .dropend .dropdown-toggle::after{display:inline-block;margin-left:.255em;vertical-align:.255em;content:"";border-top:.3em solid transparent;border-right:0;border-bottom:.3em solid transparent;border-left:.3em solid}
:where(html.ed-bs) .dropend .dropdown-toggle:empty::after{margin-left:0}
:where(html.ed-bs) .dropend .dropdown-toggle::after{vertical-align:0}
:where(html.ed-bs) .dropstart .dropdown-menu[data-bs-popper]{top:0;right:100%;left:auto;margin-top:0;margin-right:var(--bs-dropdown-spacer)}
:where(html.ed-bs) .dropstart .dropdown-toggle::after{display:inline-block;margin-left:.255em;vertical-align:.255em;content:""}
:where(html.ed-bs) .dropstart .dropdown-toggle::after{display:none}
:where(html.ed-bs) .dropstart .dropdown-toggle::before{display:inline-block;margin-right:.255em;vertical-align:.255em;content:"";border-top:.3em solid transparent;border-right:.3em solid;border-bottom:.3em solid transparent}
:where(html.ed-bs) .dropstart .dropdown-toggle:empty::after{margin-left:0}
:where(html.ed-bs) .dropstart .dropdown-toggle::before{vertical-align:0}
:where(html.ed-bs) .dropdown-menu.show{display:block}
:where(html.ed-bs) .nav-link{display:block;padding:var(--bs-nav-link-padding-y) var(--bs-nav-link-padding-x);font-size:var(--bs-nav-link-font-size);font-weight:var(--bs-nav-link-font-weight);color:var(--bs-nav-link-color);text-decoration:none;background:0 0;border:0;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .nav-link{transition:none}
}
:where(html.ed-bs) .nav-link:focus, :where(html.ed-bs) .nav-link:hover{color:var(--bs-nav-link-hover-color)}
:where(html.ed-bs) .nav-link:focus-visible{outline:0;box-shadow:0 0 0 .25rem rgba(13,110,253,.25)}
:where(html.ed-bs) .nav-link.disabled, :where(html.ed-bs) .nav-link:disabled{color:var(--bs-nav-link-disabled-color);pointer-events:none;cursor:default}
:where(html.ed-bs) .nav-pills{--bs-nav-pills-border-radius:var(--bs-border-radius);--bs-nav-pills-link-active-color:#fff;--bs-nav-pills-link-active-bg:#0d6efd}
:where(html.ed-bs) .nav-pills .nav-link{border-radius:var(--bs-nav-pills-border-radius)}
:where(html.ed-bs) .nav-pills .nav-link.active, :where(html.ed-bs) .nav-pills .show>.nav-link{color:var(--bs-nav-pills-link-active-color);background-color:var(--bs-nav-pills-link-active-bg)}
:where(html.ed-bs) .navbar{--bs-navbar-padding-x:0;--bs-navbar-padding-y:0.5rem;--bs-navbar-color:rgba(var(--bs-emphasis-color-rgb), 0.65);--bs-navbar-hover-color:rgba(var(--bs-emphasis-color-rgb), 0.8);--bs-navbar-disabled-color:rgba(var(--bs-emphasis-color-rgb), 0.3);--bs-navbar-active-color:rgba(var(--bs-emphasis-color-rgb), 1);--bs-navbar-brand-padding-y:0.3125rem;--bs-navbar-brand-margin-end:1rem;--bs-navbar-brand-font-size:1.25rem;--bs-navbar-brand-color:rgba(var(--bs-emphasis-color-rgb), 1);--bs-navbar-brand-hover-color:rgba(var(--bs-emphasis-color-rgb), 1);--bs-navbar-nav-link-padding-x:0.5rem;--bs-navbar-toggler-padding-y:0.25rem;--bs-navbar-toggler-padding-x:0.75rem;--bs-navbar-toggler-font-size:1.25rem;--bs-navbar-toggler-icon-bg:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 37, 41, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");--bs-navbar-toggler-border-color:rgba(var(--bs-emphasis-color-rgb), 0.15);--bs-navbar-toggler-border-radius:var(--bs-border-radius);--bs-navbar-toggler-focus-width:0.25rem;--bs-navbar-toggler-transition:box-shadow 0.15s ease-in-out;position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:var(--bs-navbar-padding-y) var(--bs-navbar-padding-x)}
:where(html.ed-bs) .navbar>.container, :where(html.ed-bs) .navbar>.container-fluid, :where(html.ed-bs) .navbar>.container-lg, :where(html.ed-bs) .navbar>.container-md, :where(html.ed-bs) .navbar>.container-sm, :where(html.ed-bs) .navbar>.container-xl, :where(html.ed-bs) .navbar>.container-xxl{display:flex;flex-wrap:inherit;align-items:center;justify-content:space-between}
:where(html.ed-bs) .navbar-brand{padding-top:var(--bs-navbar-brand-padding-y);padding-bottom:var(--bs-navbar-brand-padding-y);margin-right:var(--bs-navbar-brand-margin-end);font-size:var(--bs-navbar-brand-font-size);color:var(--bs-navbar-brand-color);text-decoration:none;white-space:nowrap}
:where(html.ed-bs) .navbar-brand:focus, :where(html.ed-bs) .navbar-brand:hover{color:var(--bs-navbar-brand-hover-color)}
:where(html.ed-bs) .navbar-nav{--bs-nav-link-padding-x:0;--bs-nav-link-padding-y:0.5rem;--bs-nav-link-font-weight: ;--bs-nav-link-color:var(--bs-navbar-color);--bs-nav-link-hover-color:var(--bs-navbar-hover-color);--bs-nav-link-disabled-color:var(--bs-navbar-disabled-color);display:flex;flex-direction:column;padding-left:0;margin-bottom:0;list-style:none}
:where(html.ed-bs) .navbar-nav .nav-link.active, :where(html.ed-bs) .navbar-nav .nav-link.show{color:var(--bs-navbar-active-color)}
:where(html.ed-bs) .navbar-nav .dropdown-menu{position:static}
:where(html.ed-bs) .navbar-collapse{flex-basis:100%;flex-grow:1;align-items:center}
:where(html.ed-bs) .navbar-toggler{padding:var(--bs-navbar-toggler-padding-y) var(--bs-navbar-toggler-padding-x);font-size:var(--bs-navbar-toggler-font-size);line-height:1;color:var(--bs-navbar-color);background-color:transparent;border:var(--bs-border-width) solid var(--bs-navbar-toggler-border-color);border-radius:var(--bs-navbar-toggler-border-radius);transition:var(--bs-navbar-toggler-transition)}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .navbar-toggler{transition:none}
}
:where(html.ed-bs) .navbar-toggler:hover{text-decoration:none}
:where(html.ed-bs) .navbar-toggler:focus{text-decoration:none;outline:0;box-shadow:0 0 0 var(--bs-navbar-toggler-focus-width)}
:where(html.ed-bs) .navbar-toggler-icon{display:inline-block;width:1.5em;height:1.5em;vertical-align:middle;background-image:var(--bs-navbar-toggler-icon-bg);background-repeat:no-repeat;background-position:center;background-size:100%}
@media (min-width:992px){
  :where(html.ed-bs) .navbar-expand-lg{flex-wrap:nowrap;justify-content:flex-start}
  :where(html.ed-bs) .navbar-expand-lg .navbar-nav{flex-direction:row}
  :where(html.ed-bs) .navbar-expand-lg .navbar-nav .dropdown-menu{position:absolute}
  :where(html.ed-bs) .navbar-expand-lg .navbar-nav .nav-link{padding-right:var(--bs-navbar-nav-link-padding-x);padding-left:var(--bs-navbar-nav-link-padding-x)}
  :where(html.ed-bs) .navbar-expand-lg .navbar-collapse{display:flex!important;flex-basis:auto}
  :where(html.ed-bs) .navbar-expand-lg .navbar-toggler{display:none}
}
:where(html.ed-bs) .navbar-dark, :where(html.ed-bs) .navbar[data-bs-theme=dark]{--bs-navbar-color:rgba(255, 255, 255, 0.55);--bs-navbar-hover-color:rgba(255, 255, 255, 0.75);--bs-navbar-disabled-color:rgba(255, 255, 255, 0.25);--bs-navbar-active-color:#fff;--bs-navbar-brand-color:#fff;--bs-navbar-brand-hover-color:#fff;--bs-navbar-toggler-border-color:rgba(255, 255, 255, 0.1);--bs-navbar-toggler-icon-bg:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")}
:where(html.ed-bs) [data-bs-theme=dark] .navbar-toggler-icon{--bs-navbar-toggler-icon-bg:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")}
:where(html.ed-bs) .card{--bs-card-spacer-y:1rem;--bs-card-spacer-x:1rem;--bs-card-title-spacer-y:0.5rem;--bs-card-title-color: ;--bs-card-subtitle-color: ;--bs-card-border-width:var(--bs-border-width);--bs-card-border-color:var(--bs-border-color-translucent);--bs-card-border-radius:var(--bs-border-radius);--bs-card-box-shadow: ;--bs-card-inner-border-radius:calc(var(--bs-border-radius) - (var(--bs-border-width)));--bs-card-cap-padding-y:0.5rem;--bs-card-cap-padding-x:1rem;--bs-card-cap-bg:rgba(var(--bs-body-color-rgb), 0.03);--bs-card-cap-color: ;--bs-card-height: ;--bs-card-color: ;--bs-card-bg:var(--bs-body-bg);--bs-card-img-overlay-padding:1rem;--bs-card-group-margin:0.75rem;position:relative;display:flex;flex-direction:column;min-width:0;height:var(--bs-card-height);color:var(--bs-body-color);word-wrap:break-word;background-color:var(--bs-card-bg);background-clip:border-box;border:var(--bs-card-border-width) solid var(--bs-card-border-color);border-radius:var(--bs-card-border-radius)}
:where(html.ed-bs) .card>hr{margin-right:0;margin-left:0}
:where(html.ed-bs) .card-title{margin-bottom:var(--bs-card-title-spacer-y);color:var(--bs-card-title-color)}
:where(html.ed-bs) .breadcrumb{--bs-breadcrumb-padding-x:0;--bs-breadcrumb-padding-y:0;--bs-breadcrumb-margin-bottom:1rem;--bs-breadcrumb-bg: ;--bs-breadcrumb-border-radius: ;--bs-breadcrumb-divider-color:var(--bs-secondary-color);--bs-breadcrumb-item-padding-x:0.5rem;--bs-breadcrumb-item-active-color:var(--bs-secondary-color);display:flex;flex-wrap:wrap;padding:var(--bs-breadcrumb-padding-y) var(--bs-breadcrumb-padding-x);margin-bottom:var(--bs-breadcrumb-margin-bottom);font-size:var(--bs-breadcrumb-font-size);list-style:none;background-color:var(--bs-breadcrumb-bg);border-radius:var(--bs-breadcrumb-border-radius)}
:where(html.ed-bs) .badge{--bs-badge-padding-x:0.65em;--bs-badge-padding-y:0.35em;--bs-badge-font-size:0.75em;--bs-badge-font-weight:700;--bs-badge-color:#fff;--bs-badge-border-radius:var(--bs-border-radius);display:inline-block;padding:var(--bs-badge-padding-y) var(--bs-badge-padding-x);font-size:var(--bs-badge-font-size);font-weight:var(--bs-badge-font-weight);line-height:1;color:var(--bs-badge-color);text-align:center;white-space:nowrap;vertical-align:baseline;border-radius:var(--bs-badge-border-radius)}
:where(html.ed-bs) .badge:empty{display:none}
:where(html.ed-bs) .btn .badge{position:relative;top:-1px}
:where(html.ed-bs) .alert{--bs-alert-bg:transparent;--bs-alert-padding-x:1rem;--bs-alert-padding-y:1rem;--bs-alert-margin-bottom:1rem;--bs-alert-color:inherit;--bs-alert-border-color:transparent;--bs-alert-border:var(--bs-border-width) solid var(--bs-alert-border-color);--bs-alert-border-radius:var(--bs-border-radius);--bs-alert-link-color:inherit;position:relative;padding:var(--bs-alert-padding-y) var(--bs-alert-padding-x);margin-bottom:var(--bs-alert-margin-bottom);color:var(--bs-alert-color);background-color:var(--bs-alert-bg);border:var(--bs-alert-border);border-radius:var(--bs-alert-border-radius)}
:where(html.ed-bs) .alert-warning{--bs-alert-color:var(--bs-warning-text-emphasis);--bs-alert-bg:var(--bs-warning-bg-subtle);--bs-alert-border-color:var(--bs-warning-border-subtle);--bs-alert-link-color:var(--bs-warning-text-emphasis)}
:where(html.ed-bs) .alert-danger{--bs-alert-color:var(--bs-danger-text-emphasis);--bs-alert-bg:var(--bs-danger-bg-subtle);--bs-alert-border-color:var(--bs-danger-border-subtle);--bs-alert-link-color:var(--bs-danger-text-emphasis)}
:where(html.ed-bs) .btn-close{--bs-btn-close-color:#000;--bs-btn-close-bg:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/%3e%3c/svg%3e");--bs-btn-close-opacity:0.5;--bs-btn-close-hover-opacity:0.75;--bs-btn-close-focus-shadow:0 0 0 0.25rem rgba(13, 110, 253, 0.25);--bs-btn-close-focus-opacity:1;--bs-btn-close-disabled-opacity:0.25;--bs-btn-close-white-filter:invert(1) grayscale(100%) brightness(200%);box-sizing:content-box;width:1em;height:1em;padding:.25em .25em;color:var(--bs-btn-close-color);background:transparent var(--bs-btn-close-bg) center/1em auto no-repeat;border:0;border-radius:.375rem;opacity:var(--bs-btn-close-opacity)}
:where(html.ed-bs) .btn-close:hover{color:var(--bs-btn-close-color);text-decoration:none;opacity:var(--bs-btn-close-hover-opacity)}
:where(html.ed-bs) .btn-close:focus{outline:0;box-shadow:var(--bs-btn-close-focus-shadow);opacity:var(--bs-btn-close-focus-opacity)}
:where(html.ed-bs) .btn-close.disabled, :where(html.ed-bs) .btn-close:disabled{pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;opacity:var(--bs-btn-close-disabled-opacity)}
:where(html.ed-bs) [data-bs-theme=dark] .btn-close{filter:var(--bs-btn-close-white-filter)}
:where(html.ed-bs) .toast{--bs-toast-zindex:1090;--bs-toast-padding-x:0.75rem;--bs-toast-padding-y:0.5rem;--bs-toast-spacing:1.5rem;--bs-toast-max-width:350px;--bs-toast-font-size:0.875rem;--bs-toast-color: ;--bs-toast-bg:rgba(var(--bs-body-bg-rgb), 0.85);--bs-toast-border-width:var(--bs-border-width);--bs-toast-border-color:var(--bs-border-color-translucent);--bs-toast-border-radius:var(--bs-border-radius);--bs-toast-box-shadow:var(--bs-box-shadow);--bs-toast-header-color:var(--bs-secondary-color);--bs-toast-header-bg:rgba(var(--bs-body-bg-rgb), 0.85);--bs-toast-header-border-color:var(--bs-border-color-translucent);width:var(--bs-toast-max-width);max-width:100%;font-size:var(--bs-toast-font-size);color:var(--bs-toast-color);pointer-events:auto;background-color:var(--bs-toast-bg);background-clip:padding-box;border:var(--bs-toast-border-width) solid var(--bs-toast-border-color);box-shadow:var(--bs-toast-box-shadow);border-radius:var(--bs-toast-border-radius)}
:where(html.ed-bs) .toast.showing{opacity:0}
:where(html.ed-bs) .toast:not(.show){display:none}
:where(html.ed-bs) .toast-container{--bs-toast-zindex:1090;position:absolute;z-index:var(--bs-toast-zindex);width:-webkit-max-content;width:-moz-max-content;width:max-content;max-width:100%;pointer-events:none}
:where(html.ed-bs) .toast-container>:not(:last-child){margin-bottom:var(--bs-toast-spacing)}
:where(html.ed-bs) .modal-backdrop{--bs-backdrop-zindex:1050;--bs-backdrop-bg:#000;--bs-backdrop-opacity:0.5;position:fixed;top:0;left:0;z-index:var(--bs-backdrop-zindex);width:100vw;height:100vh;background-color:var(--bs-backdrop-bg)}
:where(html.ed-bs) .modal-backdrop.fade{opacity:0}
:where(html.ed-bs) .modal-backdrop.show{opacity:var(--bs-backdrop-opacity)}
:where(html.ed-bs) .tooltip{--bs-tooltip-zindex:1080;--bs-tooltip-max-width:200px;--bs-tooltip-padding-x:0.5rem;--bs-tooltip-padding-y:0.25rem;--bs-tooltip-margin: ;--bs-tooltip-font-size:0.875rem;--bs-tooltip-color:var(--bs-body-bg);--bs-tooltip-bg:var(--bs-emphasis-color);--bs-tooltip-border-radius:var(--bs-border-radius);--bs-tooltip-opacity:0.9;--bs-tooltip-arrow-width:0.8rem;--bs-tooltip-arrow-height:0.4rem;z-index:var(--bs-tooltip-zindex);display:block;margin:var(--bs-tooltip-margin);font-family:var(--bs-font-sans-serif);font-style:normal;font-weight:400;line-height:1.5;text-align:left;text-align:start;text-decoration:none;text-shadow:none;text-transform:none;letter-spacing:normal;word-break:normal;white-space:normal;word-spacing:normal;line-break:auto;font-size:var(--bs-tooltip-font-size);word-wrap:break-word;opacity:0}
:where(html.ed-bs) .tooltip.show{opacity:var(--bs-tooltip-opacity)}
:where(html.ed-bs) .tooltip .tooltip-arrow{display:block;width:var(--bs-tooltip-arrow-width);height:var(--bs-tooltip-arrow-height)}
:where(html.ed-bs) .tooltip .tooltip-arrow::before{position:absolute;content:"";border-color:transparent;border-style:solid}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=top] .tooltip-arrow, :where(html.ed-bs) .bs-tooltip-top .tooltip-arrow{bottom:calc(-1 * var(--bs-tooltip-arrow-height))}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=top] .tooltip-arrow::before, :where(html.ed-bs) .bs-tooltip-top .tooltip-arrow::before{top:-1px;border-width:var(--bs-tooltip-arrow-height) calc(var(--bs-tooltip-arrow-width) * .5) 0;border-top-color:var(--bs-tooltip-bg)}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=right] .tooltip-arrow, :where(html.ed-bs) .bs-tooltip-end .tooltip-arrow{left:calc(-1 * var(--bs-tooltip-arrow-height));width:var(--bs-tooltip-arrow-height);height:var(--bs-tooltip-arrow-width)}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=right] .tooltip-arrow::before, :where(html.ed-bs) .bs-tooltip-end .tooltip-arrow::before{right:-1px;border-width:calc(var(--bs-tooltip-arrow-width) * .5) var(--bs-tooltip-arrow-height) calc(var(--bs-tooltip-arrow-width) * .5) 0;border-right-color:var(--bs-tooltip-bg)}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=bottom] .tooltip-arrow, :where(html.ed-bs) .bs-tooltip-bottom .tooltip-arrow{top:calc(-1 * var(--bs-tooltip-arrow-height))}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=bottom] .tooltip-arrow::before, :where(html.ed-bs) .bs-tooltip-bottom .tooltip-arrow::before{bottom:-1px;border-width:0 calc(var(--bs-tooltip-arrow-width) * .5) var(--bs-tooltip-arrow-height);border-bottom-color:var(--bs-tooltip-bg)}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=left] .tooltip-arrow, :where(html.ed-bs) .bs-tooltip-start .tooltip-arrow{right:calc(-1 * var(--bs-tooltip-arrow-height));width:var(--bs-tooltip-arrow-height);height:var(--bs-tooltip-arrow-width)}
:where(html.ed-bs) .bs-tooltip-auto[data-popper-placement^=left] .tooltip-arrow::before, :where(html.ed-bs) .bs-tooltip-start .tooltip-arrow::before{left:-1px;border-width:calc(var(--bs-tooltip-arrow-width) * .5) 0 calc(var(--bs-tooltip-arrow-width) * .5) var(--bs-tooltip-arrow-height);border-left-color:var(--bs-tooltip-bg)}
:where(html.ed-bs) .tooltip-inner{max-width:var(--bs-tooltip-max-width);padding:var(--bs-tooltip-padding-y) var(--bs-tooltip-padding-x);color:var(--bs-tooltip-color);text-align:center;background-color:var(--bs-tooltip-bg);border-radius:var(--bs-tooltip-border-radius)}
:where(html.ed-bs) .popover{--bs-popover-zindex:1070;--bs-popover-max-width:276px;--bs-popover-font-size:0.875rem;--bs-popover-bg:var(--bs-body-bg);--bs-popover-border-width:var(--bs-border-width);--bs-popover-border-color:var(--bs-border-color-translucent);--bs-popover-border-radius:var(--bs-border-radius-lg);--bs-popover-inner-border-radius:calc(var(--bs-border-radius-lg) - var(--bs-border-width));--bs-popover-box-shadow:var(--bs-box-shadow);--bs-popover-header-padding-x:1rem;--bs-popover-header-padding-y:0.5rem;--bs-popover-header-font-size:1rem;--bs-popover-header-color:inherit;--bs-popover-header-bg:var(--bs-secondary-bg);--bs-popover-body-padding-x:1rem;--bs-popover-body-padding-y:1rem;--bs-popover-body-color:var(--bs-body-color);--bs-popover-arrow-width:1rem;--bs-popover-arrow-height:0.5rem;--bs-popover-arrow-border:var(--bs-popover-border-color);z-index:var(--bs-popover-zindex);display:block;max-width:var(--bs-popover-max-width);font-family:var(--bs-font-sans-serif);font-style:normal;font-weight:400;line-height:1.5;text-align:left;text-align:start;text-decoration:none;text-shadow:none;text-transform:none;letter-spacing:normal;word-break:normal;white-space:normal;word-spacing:normal;line-break:auto;font-size:var(--bs-popover-font-size);word-wrap:break-word;background-color:var(--bs-popover-bg);background-clip:padding-box;border:var(--bs-popover-border-width) solid var(--bs-popover-border-color);border-radius:var(--bs-popover-border-radius)}
:where(html.ed-bs) .popover .popover-arrow{display:block;width:var(--bs-popover-arrow-width);height:var(--bs-popover-arrow-height)}
:where(html.ed-bs) .popover .popover-arrow::after, :where(html.ed-bs) .popover .popover-arrow::before{position:absolute;display:block;content:"";border-color:transparent;border-style:solid;border-width:0}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=top]>.popover-arrow, :where(html.ed-bs) .bs-popover-top>.popover-arrow{bottom:calc(-1 * (var(--bs-popover-arrow-height)) - var(--bs-popover-border-width))}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=top]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-auto[data-popper-placement^=top]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-top>.popover-arrow::after, :where(html.ed-bs) .bs-popover-top>.popover-arrow::before{border-width:var(--bs-popover-arrow-height) calc(var(--bs-popover-arrow-width) * .5) 0}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=top]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-top>.popover-arrow::before{bottom:0;border-top-color:var(--bs-popover-arrow-border)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=top]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-top>.popover-arrow::after{bottom:var(--bs-popover-border-width);border-top-color:var(--bs-popover-bg)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=right]>.popover-arrow, :where(html.ed-bs) .bs-popover-end>.popover-arrow{left:calc(-1 * (var(--bs-popover-arrow-height)) - var(--bs-popover-border-width));width:var(--bs-popover-arrow-height);height:var(--bs-popover-arrow-width)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=right]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-auto[data-popper-placement^=right]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-end>.popover-arrow::after, :where(html.ed-bs) .bs-popover-end>.popover-arrow::before{border-width:calc(var(--bs-popover-arrow-width) * .5) var(--bs-popover-arrow-height) calc(var(--bs-popover-arrow-width) * .5) 0}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=right]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-end>.popover-arrow::before{left:0;border-right-color:var(--bs-popover-arrow-border)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=right]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-end>.popover-arrow::after{left:var(--bs-popover-border-width);border-right-color:var(--bs-popover-bg)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=bottom]>.popover-arrow, :where(html.ed-bs) .bs-popover-bottom>.popover-arrow{top:calc(-1 * (var(--bs-popover-arrow-height)) - var(--bs-popover-border-width))}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=bottom]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-auto[data-popper-placement^=bottom]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-bottom>.popover-arrow::after, :where(html.ed-bs) .bs-popover-bottom>.popover-arrow::before{border-width:0 calc(var(--bs-popover-arrow-width) * .5) var(--bs-popover-arrow-height)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=bottom]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-bottom>.popover-arrow::before{top:0;border-bottom-color:var(--bs-popover-arrow-border)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=bottom]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-bottom>.popover-arrow::after{top:var(--bs-popover-border-width);border-bottom-color:var(--bs-popover-bg)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=bottom] .popover-header::before, :where(html.ed-bs) .bs-popover-bottom .popover-header::before{position:absolute;top:0;left:50%;display:block;width:var(--bs-popover-arrow-width);margin-left:calc(-.5 * var(--bs-popover-arrow-width));content:"";border-bottom:var(--bs-popover-border-width) solid var(--bs-popover-header-bg)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=left]>.popover-arrow, :where(html.ed-bs) .bs-popover-start>.popover-arrow{right:calc(-1 * (var(--bs-popover-arrow-height)) - var(--bs-popover-border-width));width:var(--bs-popover-arrow-height);height:var(--bs-popover-arrow-width)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=left]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-auto[data-popper-placement^=left]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-start>.popover-arrow::after, :where(html.ed-bs) .bs-popover-start>.popover-arrow::before{border-width:calc(var(--bs-popover-arrow-width) * .5) 0 calc(var(--bs-popover-arrow-width) * .5) var(--bs-popover-arrow-height)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=left]>.popover-arrow::before, :where(html.ed-bs) .bs-popover-start>.popover-arrow::before{right:0;border-left-color:var(--bs-popover-arrow-border)}
:where(html.ed-bs) .bs-popover-auto[data-popper-placement^=left]>.popover-arrow::after, :where(html.ed-bs) .bs-popover-start>.popover-arrow::after{right:var(--bs-popover-border-width);border-left-color:var(--bs-popover-bg)}
:where(html.ed-bs) .popover-header{padding:var(--bs-popover-header-padding-y) var(--bs-popover-header-padding-x);margin-bottom:0;font-size:var(--bs-popover-header-font-size);color:var(--bs-popover-header-color);background-color:var(--bs-popover-header-bg);border-bottom:var(--bs-popover-border-width) solid var(--bs-popover-border-color);border-top-left-radius:var(--bs-popover-inner-border-radius);border-top-right-radius:var(--bs-popover-inner-border-radius)}
:where(html.ed-bs) .popover-header:empty{display:none}
:where(html.ed-bs) .popover-body{padding:var(--bs-popover-body-padding-y) var(--bs-popover-body-padding-x);color:var(--bs-popover-body-color)}
:where(html.ed-bs) .carousel-item-next, :where(html.ed-bs) .carousel-item-prev, :where(html.ed-bs) .carousel-item.active{display:block}
:where(html.ed-bs) .active.carousel-item-end, :where(html.ed-bs) .carousel-item-next:not(.carousel-item-start){transform:translateX(100%)}
:where(html.ed-bs) .active.carousel-item-start, :where(html.ed-bs) .carousel-item-prev:not(.carousel-item-end){transform:translateX(-100%)}
:where(html.ed-bs) .spinner-border, :where(html.ed-bs) .spinner-grow{display:inline-block;width:var(--bs-spinner-width);height:var(--bs-spinner-height);vertical-align:var(--bs-spinner-vertical-align);border-radius:50%;animation:var(--bs-spinner-animation-speed) linear infinite var(--bs-spinner-animation-name)}
:where(html.ed-bs) .spinner-border{--bs-spinner-width:2rem;--bs-spinner-height:2rem;--bs-spinner-vertical-align:-0.125em;--bs-spinner-border-width:0.25em;--bs-spinner-animation-speed:0.75s;--bs-spinner-animation-name:spinner-border;border:var(--bs-spinner-border-width) solid currentcolor;border-right-color:transparent}
@media (prefers-reduced-motion:reduce){
  :where(html.ed-bs) .spinner-border, :where(html.ed-bs) .spinner-grow{--bs-spinner-animation-speed:1.5s}
}
:where(html.ed-bs) .offcanvas-backdrop{position:fixed;top:0;left:0;z-index:1040;width:100vw;height:100vh;background-color:#000}
:where(html.ed-bs) .offcanvas-backdrop.fade{opacity:0}
:where(html.ed-bs) .offcanvas-backdrop.show{opacity:.5}
:where(html.ed-bs) .offcanvas-header{display:flex;align-items:center;padding:var(--bs-offcanvas-padding-y) var(--bs-offcanvas-padding-x)}
:where(html.ed-bs) .offcanvas-header .btn-close{padding:calc(var(--bs-offcanvas-padding-y) * .5) calc(var(--bs-offcanvas-padding-x) * .5);margin:calc(-.5 * var(--bs-offcanvas-padding-y)) calc(-.5 * var(--bs-offcanvas-padding-x)) calc(-.5 * var(--bs-offcanvas-padding-y)) auto}
:where(html.ed-bs) .offcanvas-title{margin-bottom:0;line-height:var(--bs-offcanvas-title-line-height)}
:where(html.ed-bs) .offcanvas-body{flex-grow:1;padding:var(--bs-offcanvas-padding-y) var(--bs-offcanvas-padding-x);overflow-y:auto}
:where(html.ed-bs) .visually-hidden, :where(html.ed-bs) .visually-hidden-focusable:not(:focus):not(:focus-within){width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
:where(html.ed-bs) .visually-hidden-focusable:not(:focus):not(:focus-within):not(caption), :where(html.ed-bs) .visually-hidden:not(caption){position:absolute!important}
:where(html.ed-bs) .d-inline-block{display:inline-block!important}
:where(html.ed-bs) .d-flex{display:flex!important}
:where(html.ed-bs) .d-inline-flex{display:inline-flex!important}
:where(html.ed-bs) .flex-column{flex-direction:column!important}
:where(html.ed-bs) .flex-wrap{flex-wrap:wrap!important}
:where(html.ed-bs) .justify-content-center{justify-content:center!important}
:where(html.ed-bs) .align-items-start{align-items:flex-start!important}
:where(html.ed-bs) .align-items-end{align-items:flex-end!important}
:where(html.ed-bs) .align-items-center{align-items:center!important}
:where(html.ed-bs) .mx-auto{margin-right:auto!important;margin-left:auto!important}
:where(html.ed-bs) .mt-3{margin-top:1rem!important}
:where(html.ed-bs) .me-2{margin-right:.5rem!important}
:where(html.ed-bs) .mb-2{margin-bottom:.5rem!important}
:where(html.ed-bs) .mb-3{margin-bottom:1rem!important}
:where(html.ed-bs) .mb-4{margin-bottom:1.5rem!important}
:where(html.ed-bs) .mb-5{margin-bottom:3rem!important}
:where(html.ed-bs) .ms-auto{margin-left:auto!important}
:where(html.ed-bs) .p-3{padding:1rem!important}
:where(html.ed-bs) .px-4{padding-right:1.5rem!important;padding-left:1.5rem!important}
:where(html.ed-bs) .py-5{padding-top:3rem!important;padding-bottom:3rem!important}
:where(html.ed-bs) .gap-2{gap:.5rem!important}
:where(html.ed-bs) .gap-3{gap:1rem!important}
:where(html.ed-bs) .text-center{text-align:center!important}
:where(html.ed-bs) .text-decoration-none{text-decoration:none!important}
:where(html.ed-bs) .text-white{--bs-text-opacity:1;color:rgba(var(--bs-white-rgb),var(--bs-text-opacity))!important}
:where(html.ed-bs) .bg-primary{--bs-bg-opacity:1;background-color:rgba(var(--bs-primary-rgb),var(--bs-bg-opacity))!important}
:where(html.ed-bs) .visible{visibility:visible!important}
@media (min-width:992px){
  :where(html.ed-bs) .align-items-lg-center{align-items:center!important}
  :where(html.ed-bs) .px-lg-5{padding-right:3rem!important;padding-left:3rem!important}
}

/* ============ style.css ============ */
:root:where(.ed-site){--accent:         #2563eb;
  --accent-rgb:     37 99 235;
  --accent-light:   #3b82f6;
  --accent-dark:    #1d4ed8;
  --eyebrow-bg:     rgba(37,99,235,0.15);
  --eyebrow-border: rgba(59,130,246,0.30);
  --eyebrow-color:  #93c5fd;

  
  --navy:        #0b1120;
  --navy-mid:    #111827;
  --navy-card:   #161e2e;
  --navy-border: #1e2d45;
  --amber:       #f59e0b;
  --amber-dark:  #d97706;
  --emerald:     #10b981;
  --white:       #ffffff;
  --off-white:   #f1f5f9;
  --border:      #e2e8f0;
  --text-body:   #334155;
  --text-muted:  #64748b;

  
  --radius:    10px;
  --radius-sm: 6px;
  --radius-lg: 16px;

  
  --transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: all 0.45s cubic-bezier(0.4,0,0.2,1);

  
  --shadow-sm:  0 1px 4px rgba(0,0,0,0.06);
  --shadow:     0 4px 16px rgba(0,0,0,0.07);
  --shadow-md:  0 8px 28px rgba(var(--accent-rgb) / 0.10);
  --shadow-lg:  0 16px 40px rgba(0,0,0,0.12);
  --shadow-xl:  0 24px 56px rgba(0,0,0,0.16);

  
  --sidebar-w: 280px;
  --topbar-h:  64px;
  --content-max: 1200px;

  
  --font-display: "DM Serif Display", Georgia, "Times New Roman", serif;
  --font-body:    "Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;}
@media (prefers-reduced-motion: reduce){
  :where(html.ed-site), :where(html.ed-site) *, :where(html.ed-site)::before, :where(html.ed-site) *::before, :where(html.ed-site)::after, :where(html.ed-site) *::after{animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;}
}
:where(html.ed-site), :where(html.ed-site) *, :where(html.ed-site)::before, :where(html.ed-site) *::before, :where(html.ed-site)::after, :where(html.ed-site) *::after{box-sizing: border-box; margin: 0; padding: 0;}
html:where(.ed-site){scroll-behavior: smooth; text-size-adjust: 100%; -webkit-text-size-adjust: 100%;}
:where(html.ed-site) body{font-family: var(--font-body);
  background: var(--off-white);
  color: var(--text-body);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;}
:where(html.ed-site) a{text-decoration: none; color: inherit; transition: var(--transition);}
:where(html.ed-site) a:focus-visible{outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 3px;}
:where(html.ed-site) img{max-width: 100%; display: block; height: auto;}
:where(html.ed-site) button{cursor: pointer;}
:where(html.ed-site) [hidden]{display: none !important;}
:where(html.ed-site) .navbar{z-index: 1030 !important;}
:where(html.ed-site) .dropdown-menu{z-index: 1050 !important;}
:where(html.ed-site) .ed-header{background: var(--white);
  box-shadow: 0 1px 0 var(--border), 0 2px 8px rgba(0,0,0,0.04);
  position: sticky;
  top: 0;
  z-index: 1030;}
:where(html.ed-site) .ed-header .navbar{padding: 0; min-height: var(--topbar-h);}
:where(html.ed-site) .ed-header .navbar-brand{display: flex; align-items: center; gap: 0.5rem; padding: 0.75rem 0;}
:where(html.ed-site) .ed-header .brand-logo{width: 32px; height: 32px; flex-shrink: 0;}
:where(html.ed-site) .ed-header .brand-name{font-family: var(--font-body); font-weight: 800; font-size: 1.05rem; color: var(--navy); letter-spacing: -0.01em;}
:where(html.ed-site) .ed-header .brand-accent{color: var(--accent);}
:where(html.ed-site) .ed-header .nav-link{font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-body);
  padding: 0.5rem 0.875rem !important;
  border-radius: var(--radius-sm);
  transition: background 0.18s ease, color 0.18s ease;}
:where(html.ed-site) .ed-header .nav-link:hover, :where(html.ed-site) .ed-header .nav-link.active{color: var(--accent) !important; background: rgba(var(--accent-rgb) / 0.06);}
:where(html.ed-site) .ed-header .nav-link.active{font-weight: 700;}
:where(html.ed-site) .ed-header .dropdown-menu{min-width: 480px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  z-index: 1050;}
:where(html.ed-site) .ed-header .dropdown-item-row{display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease;}
:where(html.ed-site) .ed-header .dropdown-item-row:hover{background: var(--off-white);}
:where(html.ed-site) .ed-header .dropdown-item-row a.subject-link{font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy);
  white-space: nowrap;
  min-width: 180px;}
:where(html.ed-site) .ed-header .dropdown-item-row a.subject-link:hover{color: var(--accent);}
:where(html.ed-site) .ed-header .btn-group-sm > .btn{padding: 0.2rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 4px !important;}
:where(html.ed-site) .ed-header .btn-primary{background: var(--accent) !important; border-color: var(--accent) !important; color: var(--white) !important;}
:where(html.ed-site) .ed-header .btn-outline-primary{color: var(--accent) !important;
  border-color: var(--accent) !important;
  background: var(--white) !important;}
:where(html.ed-site) .ed-header .btn-outline-primary:hover{background: rgba(var(--accent-rgb) / 0.08) !important;}
:where(html.ed-site) .ed-header .dropdown-divider{margin: 0.2rem 0.5rem; border-color: var(--border);}
:where(html.ed-site) .ed-header .navbar-toggler{border: none; padding: 0.4rem;}
:where(html.ed-site) .ed-header .navbar-toggler:focus{box-shadow: none; outline: 2px solid var(--accent);}
:where(html.ed-site) .ed-header .navbar-toggler-icon{background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(11,17,32,0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");}
@media (max-width: 575px){
  :where(html.ed-site) .ed-header .dropdown-menu{min-width: calc(100vw - 1.5rem);}
}
@media (max-width: 991px){
  :where(html.ed-site) .ed-header .dropdown-menu{min-width: 320px;}
}
:where(html.ed-site) .footer{background: #0d1117;
  color: rgba(255,255,255,0.75);
  font-family: var(--font-body);
  border-top: 1px solid rgba(255,255,255,0.06);}
:where(html.ed-site) .footer-inner{padding: 4rem 0 2rem;}
:where(html.ed-site) .footer a{transition: color 0.2s ease;}
:where(html.ed-site) .footer a:hover{color: var(--accent) !important;}
:where(html.ed-site) .footer .footer-col-title{font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1.25rem;
  padding-bottom: 0.625rem;
  border-bottom: 2px solid rgba(var(--accent-rgb) / 0.5);
  display: inline-block;}
:where(html.ed-site) .footer ul{list-style: none; padding: 0;}
:where(html.ed-site) .footer ul li{margin-bottom: 0.5rem;}
:where(html.ed-site) .footer ul li a{font-size: 0.875rem; color: rgba(255,255,255,0.65);}
:where(html.ed-site) .footer ul li a:hover{color: var(--white) !important;}
:where(html.ed-site) .footer .brand-name{font-weight: 800; color: var(--white);}
:where(html.ed-site) .footer .brand-accent{color: var(--accent);}
:where(html.ed-site) .footer .footer-desc{font-size: 0.875rem; line-height: 1.7; color: rgba(255,255,255,0.55); margin-top: 0.75rem;}
:where(html.ed-site) .footer .social-links{display: flex; gap: 0.6rem; margin-top: 1.25rem;}
:where(html.ed-site) .footer .social-link{width: 36px; height: 36px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);}
:where(html.ed-site) .footer .social-link:hover{border-color: var(--accent); color: var(--accent) !important; background: rgba(var(--accent-rgb) / 0.1); transform: translateY(-2px);}
:where(html.ed-site) .footer .footer-bottom{border-top: 1px solid rgba(255,255,255,0.06);
  padding: 1.25rem 0;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;}
:where(html.ed-site) .footer .footer-bottom a{color: rgba(255,255,255,0.4);}
:where(html.ed-site) .footer .footer-bottom a:hover{color: rgba(255,255,255,0.8) !important;}
:where(html.ed-site) .back-top{position: fixed; bottom: 1.5rem; right: 1.5rem;
  width: 42px; height: 42px;
  background: var(--accent); color: var(--white);
  border: none; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease, background 0.2s ease;
  box-shadow: 0 4px 16px rgba(var(--accent-rgb) / 0.45);
  cursor: pointer; z-index: 9999; font-size: 0.85rem;}
:where(html.ed-site) .back-top.show{opacity: 1; visibility: visible;}
:where(html.ed-site) .back-top:hover{transform: translateY(-3px); background: var(--accent-dark); box-shadow: 0 8px 24px rgba(var(--accent-rgb) / 0.5);}
:where(html.ed-site) .section-label{display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--amber); margin-bottom: 0.625rem;}
:where(html.ed-site) .section-label::before{content: ""; display: block; width: 18px; height: 2px;
  background: var(--amber); border-radius: 1px;}
:where(html.ed-site) .section-heading{font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 400; color: var(--navy); line-height: 1.2;
  margin-bottom: 0.5rem;}
:where(html.ed-site) .section-desc{font-size: 0.975rem; color: var(--text-muted); max-width: 560px; line-height: 1.7;}
:where(html.ed-site) .reveal{opacity: 0; transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;}
:where(html.ed-site) .reveal.visible{opacity: 1; transform: none;}
:where(html.ed-site) .reveal-delay-1{transition-delay: 0.08s;}
:where(html.ed-site) .reveal-delay-2{transition-delay: 0.16s;}
:where(html.ed-site) .reveal-delay-3{transition-delay: 0.24s;}
:where(html.ed-site) .reveal-delay-4{transition-delay: 0.32s;}
:where(html.ed-site) .btn-amber{display: inline-flex; align-items: center; gap: 7px;
  padding: 0.75rem 1.625rem;
  background: var(--amber); color: var(--navy);
  font-weight: 700; font-size: 0.875rem;
  border-radius: var(--radius-sm); border: 2px solid var(--amber);
  transition: var(--transition); cursor: pointer; white-space: nowrap;}
:where(html.ed-site) .btn-amber:hover{background: var(--amber-dark); border-color: var(--amber-dark);
  color: var(--white); transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245,158,11,0.35);}
:where(html.ed-site) .btn-ghost{display: inline-flex; align-items: center; gap: 7px;
  padding: 0.75rem 1.625rem;
  background: transparent; color: var(--white);
  font-weight: 600; font-size: 0.875rem;
  border-radius: var(--radius-sm); border: 2px solid rgba(255,255,255,0.2);
  transition: var(--transition); cursor: pointer; white-space: nowrap;}
:where(html.ed-site) .btn-ghost:hover{background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.45);
  color: var(--white); transform: translateY(-2px);}
:where(html.ed-site) .btn-ghost-white{composes: btn-ghost;}
:where(html.ed-site) .ed-btn-primary{composes: btn-amber;}
:where(html.ed-site) .ed-btn-ghost{composes: btn-ghost;}
:where(html.ed-site) .ed-btn-ghost-white{display: inline-flex; align-items: center; gap: 7px;
  padding: 0.75rem 1.625rem;
  background: rgba(255,255,255,0.08); color: var(--white);
  font-weight: 600; font-size: 0.875rem;
  border-radius: var(--radius-sm); border: 2px solid rgba(255,255,255,0.2);
  transition: var(--transition); cursor: pointer;}
:where(html.ed-site) .ed-btn-ghost-white:hover{background: rgba(255,255,255,0.16); border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);}
:where(html.ed-site) .page-hero{background: var(--navy);
  color: var(--white);
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;}
:where(html.ed-site) .page-hero::before{content: "";
  position: absolute; inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cdefs%3E%3Cpattern id='g' width='60' height='60' patternUnits='userSpaceOnUse'%3E%3Cpath d='M60 0H0v60' fill='none' stroke='%23ffffff' stroke-width='0.4' opacity='0.08'/%3E%3Ccircle cx='0' cy='0' r='1.2' fill='%23ffffff' opacity='0.06'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100%25' height='100%25' fill='url(%23g)'/%3E%3C/svg%3E");
  pointer-events: none; will-change: transform;}
:where(html.ed-site) .page-hero::after{content: "";
  position: absolute; top: -120px; right: -100px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(var(--accent-rgb) / 0.2) 0%, transparent 68%);
  pointer-events: none;}
:where(html.ed-site) .page-hero .container{position: relative; z-index: 1;}
:where(html.ed-site) .hero-inner{z-index: 1; text-align: center;
  max-width: 700px; margin: 0 auto;}
:where(html.ed-site) .hero-inner--split{display: grid; grid-template-columns: 1fr 1fr;
  gap: 3rem; align-items: center;
  text-align: left; z-index: 1;}
:where(html.ed-site) .hero-eyebrow{display: inline-flex; align-items: center; gap: 6px;
  background: var(--eyebrow-bg); border: 1px solid var(--eyebrow-border);
  color: var(--eyebrow-color);
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; padding: 4px 11px;
  border-radius: 50px; margin-bottom: 1.125rem;}
:where(html.ed-site) .hero-title{font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 400; color: var(--white);
  line-height: 1.15; margin-bottom: 0.875rem;}
:where(html.ed-site) .hero-title em{font-style: italic; color: var(--amber);}
:where(html.ed-site) .hero-subtitle{color: rgba(255,255,255,0.68);
  font-size: 1rem; line-height: 1.75;
  max-width: 520px; margin-bottom: 2rem;}
:where(html.ed-site) .hero-inner       .hero-subtitle{margin-left: auto; margin-right: auto;}
:where(html.ed-site) .hero-inner--split .hero-subtitle{margin-left: 0; margin-right: 0;}
:where(html.ed-site) .hero-actions{display: flex; gap: 0.75rem; flex-wrap: wrap;}
:where(html.ed-site) .hero-inner        .hero-actions{justify-content: center;}
:where(html.ed-site) .hero-inner--split .hero-actions{justify-content: flex-start;}
:where(html.ed-site) .hero-schematic{display: flex; align-items: center; justify-content: center;}
:where(html.ed-site) .hero-stats{position: relative; z-index: 1;
  display: flex; justify-content: center; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2rem; margin-top: 2.5rem;}
:where(html.ed-site) .hero-stat{padding: 0.25rem 2rem; text-align: center; border-right: 1px solid rgba(255,255,255,0.1);}
:where(html.ed-site) .hero-stat:last-child{border-right: none;}
:where(html.ed-site) .hero-stat-num{font-family: var(--font-display); font-size: 2.2rem; color: var(--amber); line-height: 1; margin-bottom: 4px;}
:where(html.ed-site) .hero-stat-lbl{font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.4);}
:where(html.ed-site) .course-nav{background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0;
  position: sticky; top: var(--topbar-h); z-index: 900;}
:where(html.ed-site) .course-nav-inner{display: flex; gap: 0.375rem; justify-content: center; flex-wrap: wrap; padding: 0 1rem;}
:where(html.ed-site) .cnav-link{display: inline-flex; align-items: center; gap: 5px;
  padding: 0.45rem 1.125rem; border-radius: 50px;
  font-size: 0.82rem; font-weight: 600; color: var(--text-muted);
  border: 1px solid var(--border); background: var(--off-white);
  transition: var(--transition);}
:where(html.ed-site) .cnav-link i{font-size: 0.75rem;}
:where(html.ed-site) .cnav-link:hover{color: var(--accent); border-color: var(--accent); background: var(--white);}
:where(html.ed-site) .cnav-link.active{background: var(--accent); color: var(--white); border-color: var(--accent);}
:where(html.ed-site) .breadcrumb-bar{background: var(--white); border-bottom: 1px solid var(--border);
  padding: 0.45rem 0; font-size: 0.78rem; color: var(--text-muted);}
:where(html.ed-site) .breadcrumb-bar a{color: var(--text-muted);}
:where(html.ed-site) .breadcrumb-bar a:hover{color: var(--accent);}
:where(html.ed-site) .breadcrumb-bar .sep{margin: 0 0.375rem; opacity: 0.5;}
:where(html.ed-site) .feature-strip{background: var(--white); border-bottom: 1px solid var(--border); padding: 2.25rem 0;}
:where(html.ed-site) .feature-strip-grid{display: grid; grid-template-columns: repeat(4,1fr); gap: 1.25rem;}
:where(html.ed-site) .feature-strip-card{display: flex; align-items: flex-start; gap: 0.875rem;
  padding: 1.125rem; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--off-white);
  transition: var(--transition);}
:where(html.ed-site) .feature-strip-card:hover{border-color: rgba(var(--accent-rgb)/0.25); box-shadow: var(--shadow-md); transform: translateY(-2px);}
:where(html.ed-site) .feature-strip-icon{width: 38px; height: 38px; flex-shrink: 0;
  background: rgba(var(--accent-rgb)/0.08); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1rem; transition: var(--transition);}
:where(html.ed-site) .feature-strip-card:hover .feature-strip-icon{background: var(--accent); color: var(--white);}
:where(html.ed-site) .feature-strip-card h3{font-size: 0.875rem; font-weight: 700; color: var(--navy); margin-bottom: 0.25rem;}
:where(html.ed-site) .feature-strip-card p{font-size: 0.78rem; color: var(--text-muted); line-height: 1.55; margin: 0;}
:where(html.ed-site) .main-content{max-width: 1100px; margin: 0 auto; padding: 2.25rem 1rem 4rem;}
:where(html.ed-site) .content-card{background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; margin-bottom: 1.25rem;
  transition: box-shadow 0.2s ease;}
:where(html.ed-site) .content-card:focus-within{box-shadow: var(--shadow);}
:where(html.ed-site) .section-head{display: flex; align-items: center; gap: 0.75rem;
  padding: 1.125rem 1.625rem; border-bottom: 1px solid var(--border);
  background: var(--off-white);}
:where(html.ed-site) .section-head-icon{width: 32px; height: 32px; flex-shrink: 0;
  background: rgba(var(--accent-rgb)/0.08); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 0.85rem;}
:where(html.ed-site) .section-head h2{font-size: 1.1rem; font-weight: 700; color: var(--navy); margin: 0;}
:where(html.ed-site) .section-body{padding: 1.625rem;}
:where(html.ed-site) .section-body p{font-size: 0.975rem; line-height: 1.8; color: var(--text-body); margin-bottom: 1.125rem;}
:where(html.ed-site) .section-body p:last-child{margin-bottom: 0;}
:where(html.ed-site) .stats-row{display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; margin-top: 1.5rem;}
:where(html.ed-site) .stat-cell{background: var(--off-white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.125rem; text-align: center;
  transition: var(--transition);}
:where(html.ed-site) .stat-cell:hover{border-color: rgba(var(--accent-rgb)/0.3); box-shadow: var(--shadow-sm);}
:where(html.ed-site) .stat-num{font-family: var(--font-display); font-size: 1.9rem; color: var(--accent); line-height: 1; margin-bottom: 0.3rem;}
:where(html.ed-site) .stat-lbl{font-size: 0.75rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em;}
:where(html.ed-site) .curriculum-accordion .accordion-item{border: none; border-bottom: 1px solid var(--border); border-radius: 0 !important; background: transparent;}
:where(html.ed-site) .curriculum-accordion .accordion-item:last-child{border-bottom: none;}
:where(html.ed-site) .curriculum-accordion .accordion-button{font-family: var(--font-body); font-size: 0.9rem; font-weight: 600;
  color: var(--navy); background: var(--white);
  padding: 0.9rem 1.625rem; box-shadow: none; border-radius: 0 !important; gap: 0.625rem;}
:where(html.ed-site) .curriculum-accordion .accordion-button:not(.collapsed){color: var(--accent); background: rgba(var(--accent-rgb)/0.04); box-shadow: none;}
:where(html.ed-site) .curriculum-accordion .accordion-button:focus{box-shadow: none; outline: none;}
:where(html.ed-site) .curriculum-accordion .accordion-body{padding: 0.75rem 1.625rem 1.125rem 3.25rem;}
:where(html.ed-site) .curriculum-accordion .accordion-body ul{list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0.375rem 1.5rem;}
:where(html.ed-site) .curriculum-accordion .accordion-body li{font-size: 0.85rem; color: var(--text-body); padding-left: 1rem; position: relative;}
:where(html.ed-site) .curriculum-accordion .accordion-body li::before{content: ""; position: absolute; left: 0; top: 0.55em; width: 4px; height: 4px; background: var(--accent); border-radius: 50%; opacity: 0.55;}
:where(html.ed-site) .mod-num{display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; background: rgba(var(--accent-rgb)/0.1); color: var(--accent); border-radius: 50%; font-size: 0.7rem; font-weight: 700; flex-shrink: 0; margin-right: 0.5rem;}
:where(html.ed-site) .curriculum-accordion .accordion-button:not(.collapsed) .mod-num{background: var(--accent); color: var(--white);}
:where(html.ed-site) .outcomes-grid{display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem;}
:where(html.ed-site) .outcome-card{border: 1px solid var(--border); border-radius: var(--radius); padding: 1.125rem; display: flex; align-items: flex-start; gap: 0.875rem; transition: var(--transition); background: var(--off-white);}
:where(html.ed-site) .outcome-card:hover{border-color: rgba(var(--accent-rgb)/0.25); box-shadow: var(--shadow-md); transform: translateY(-2px);}
:where(html.ed-site) .outcome-icon{width: 38px; height: 38px; background: rgba(16,185,129,0.1); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--emerald); font-size: 0.95rem; flex-shrink: 0;}
:where(html.ed-site) .outcome-card h3{font-size: 0.875rem; font-weight: 700; color: var(--navy); margin-bottom: 0.25rem;}
:where(html.ed-site) .outcome-card p{font-size: 0.8rem; color: var(--text-muted); line-height: 1.55; margin: 0;}
:where(html.ed-site) .resource-grid{display: grid; grid-template-columns: repeat(auto-fill,minmax(250px,1fr)); gap: 1rem;}
:where(html.ed-site) .resource-card{border: 1px solid var(--border); border-radius: var(--radius); padding: 1.125rem; background: var(--off-white); transition: var(--transition); display: flex; gap: 0.75rem; align-items: flex-start;}
:where(html.ed-site) .resource-card:hover{border-color: rgba(var(--accent-rgb)/0.25); box-shadow: var(--shadow); transform: translateY(-2px);}
:where(html.ed-site) .resource-card-icon{width: 36px; height: 36px; background: rgba(var(--accent-rgb)/0.08); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 0.9rem; flex-shrink: 0;}
:where(html.ed-site) .resource-card h4{font-size: 0.875rem; font-weight: 700; color: var(--navy); margin-bottom: 0.2rem;}
:where(html.ed-site) .resource-author{font-size: 0.73rem; color: var(--text-muted); margin-bottom: 0.3rem;}
:where(html.ed-site) .resource-desc{font-size: 0.78rem; color: var(--text-body); line-height: 1.5; margin: 0;}
:where(html.ed-site) .resource-link{font-size: 0.78rem; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 3px; margin-top: 0.5rem;}
:where(html.ed-site) .resource-link:hover{color: var(--amber-dark);}
:where(html.ed-site) .resource-link i{font-size: 0.62rem; transition: transform 0.18s ease;}
:where(html.ed-site) .resource-link:hover i{transform: translateX(3px);}
:where(html.ed-site) .ed-tabs-nav{display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 1.375rem;}
:where(html.ed-site) .ed-tab-btn{padding: 0.6rem 1.375rem; font-family: var(--font-body); font-size: 0.85rem; font-weight: 600; color: var(--text-muted); background: none; border: none; cursor: pointer; position: relative; transition: color 0.2s ease;}
:where(html.ed-site) .ed-tab-btn::after{content: ""; position: absolute; bottom: -2px; left: 0; right: 0; height: 2px; background: var(--accent); transform: scaleX(0); transition: transform 0.2s ease;}
:where(html.ed-site) .ed-tab-btn:hover{color: var(--accent);}
:where(html.ed-site) .ed-tab-btn.active{color: var(--accent);}
:where(html.ed-site) .ed-tab-btn.active::after{transform: scaleX(1);}
:where(html.ed-site) .ed-tab-pane{display: none;}
:where(html.ed-site) .ed-tab-pane.active{display: block;}
:where(html.ed-site) .page-layout{display: grid; grid-template-columns: var(--sidebar-w) minmax(0, 1fr); align-items: start; max-width: 1320px; margin-inline: auto; padding: 1.75rem 0.75rem 3rem; gap: 1.75rem;}
:where(html.ed-site) .ed-sidebar{width: var(--sidebar-w); flex-shrink: 0;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius);
  position: sticky; top: calc(var(--topbar-h) + 14px);
  max-height: calc(100vh - var(--topbar-h) - 28px);
  overflow-y: auto; scroll-behavior: smooth;
  contain: layout style;}
:where(html.ed-site) .ed-sidebar::-webkit-scrollbar{width: 3px;}
:where(html.ed-site) .ed-sidebar::-webkit-scrollbar-track{background: transparent;}
:where(html.ed-site) .ed-sidebar::-webkit-scrollbar-thumb{background: var(--border); border-radius: 2px;}
:where(html.ed-site) .ed-sidebar::-webkit-scrollbar-thumb:hover{background: var(--text-muted);}
:where(html.ed-site) .sidebar-search{position: sticky; top: 0; z-index: 2; background: var(--white); padding: 0.625rem; border-bottom: 1px solid var(--border);}
:where(html.ed-site) .sidebar-search-wrap{position: relative;}
:where(html.ed-site) .sidebar-search input{width: 100%; padding: 0.45rem 0.625rem 0.45rem 2rem;
  border: 1px solid var(--border); border-radius: 5px;
  font-size: 0.8rem; font-family: var(--font-body);
  background: var(--off-white); color: var(--navy);
  transition: border-color 0.15s ease;}
:where(html.ed-site) .sidebar-search input:focus{outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(var(--accent-rgb)/0.1);}
:where(html.ed-site) .sidebar-search i{position: absolute; left: 0.6rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.72rem; pointer-events: none;}
:where(html.ed-site) .sidebar-meta{padding: 0.35rem 0.75rem; font-size: 0.7rem; font-weight: 600; color: var(--text-muted); background: var(--off-white); border-bottom: 1px solid var(--border);}
:where(html.ed-site) .sidebar-meta span{color: var(--accent); font-weight: 700;}
:where(html.ed-site) .module-label{padding: 0.3rem 0.75rem; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: var(--text-muted); background: var(--off-white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin: 0.2rem 0;}
:where(html.ed-site) .nav-item-link{display: flex; align-items: flex-start; gap: 7px;
  padding: 0.45rem 0.75rem; font-size: 0.8rem; color: #475569;
  cursor: pointer; border: none; background: none;
  width: 100%; text-align: left;
  border-left: 3px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  line-height: 1.45;}
:where(html.ed-site) .nav-item-link i{color: var(--accent); font-size: 0.7rem; width: 13px; text-align: center; flex-shrink: 0; margin-top: 0.15em;}
:where(html.ed-site) .nav-item-link:hover{background: rgba(var(--accent-rgb)/0.05); color: var(--navy); border-left-color: rgba(var(--accent-rgb)/0.3);}
:where(html.ed-site) .nav-item-link.active{background: rgba(var(--accent-rgb)/0.08); color: var(--accent); font-weight: 600; border-left-color: var(--accent);}
:where(html.ed-site) .ed-content{flex: 1 1 auto; min-width: 0;}
:where(html.ed-site) .welcome-panel{background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.875rem; margin-bottom: 1.25rem;}
:where(html.ed-site) .welcome-panel h2{font-family: var(--font-display); font-size: 1.55rem; font-weight: 400; color: var(--navy); margin-bottom: 0.4rem;}
:where(html.ed-site) .welcome-panel h2 em{font-style: italic; color: var(--amber);}
:where(html.ed-site) .welcome-panel .lead{color: var(--text-muted); font-size: 0.975rem; margin-bottom: 1.625rem;}
:where(html.ed-site) .topics-grid{display: grid; grid-template-columns: repeat(auto-fill,minmax(190px,1fr)); gap: 0.875rem; margin-bottom: 1.625rem;}
:where(html.ed-site) .topic-card{background: var(--off-white); border: 1px solid var(--border);
  border-top: 3px solid var(--accent); border-radius: var(--radius);
  padding: 1.125rem; transition: var(--transition);}
:where(html.ed-site) .topic-card:hover{transform: translateY(-3px); box-shadow: var(--shadow-md);}
:where(html.ed-site) .topic-card i{color: var(--accent); font-size: 1.25rem; margin-bottom: 0.5rem; display: block;}
:where(html.ed-site) .topic-card h4{font-size: 0.875rem; font-weight: 700; color: var(--navy); margin-bottom: 0.3rem;}
:where(html.ed-site) .topic-card p{font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; margin: 0;}
:where(html.ed-site) .info-hint{background: rgba(var(--accent-rgb)/0.05); border: 1px solid rgba(var(--accent-rgb)/0.18);
  border-left: 4px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.875rem 1rem; font-size: 0.85rem; color: var(--text-body);
  display: flex; gap: 0.6rem; align-items: flex-start;}
:where(html.ed-site) .info-hint i{margin-top: 2px; flex-shrink: 0; color: var(--accent);}
:where(html.ed-site) .content-frame{width: 100%; min-height: 500px;
  height: calc(100vh - var(--topbar-h) - 3rem);
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--white);
  
  contain: strict;}
:where(html.ed-site) .cta-section{background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: var(--white); padding: 5rem 0; text-align: center;
  position: relative; overflow: hidden;}
:where(html.ed-site) .cta-section::before{content: ""; position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cdefs%3E%3Cpattern id='g' width='60' height='60' patternUnits='userSpaceOnUse'%3E%3Cpath d='M60 0H0v60' fill='none' stroke='%23ffffff' stroke-width='0.4' opacity='0.08'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100%25' height='100%25' fill='url(%23g)'/%3E%3C/svg%3E");
  pointer-events: none;}
:where(html.ed-site) .cta-inner{position: relative; z-index: 1; max-width: 660px; margin: 0 auto;}
:where(html.ed-site) .cta-inner h2{font-family: var(--font-display); font-size: clamp(1.75rem,3.5vw,2.5rem); font-weight: 400; color: var(--white); margin-bottom: 1rem;}
:where(html.ed-site) .cta-inner p{font-size: 1rem; color: rgba(255,255,255,0.78); margin-bottom: 2rem;}
:where(html.ed-site) .cta-actions{display: flex; gap: 0.875rem; justify-content: center; flex-wrap: wrap;}
:where(html.ed-site) .subjects-grid{display: grid; grid-template-columns: repeat(3,1fr); gap: 1.125rem; margin-top: 2.25rem;}
:where(html.ed-site) .subject-card{background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.625rem;
  display: flex; flex-direction: column; transition: var(--transition);
  position: relative; overflow: hidden;}
:where(html.ed-site) .subject-card::before{content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--card-accent, var(--accent));
  transform: scaleX(0); transform-origin: left; transition: transform 0.3s ease;}
:where(html.ed-site) .subject-card:hover{transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,0.1); border-color: rgba(0,0,0,0.08);}
:where(html.ed-site) .subject-card:hover::before{transform: scaleX(1);}
:where(html.ed-site) .card-icon-wrap{width: 46px; height: 46px; border-radius: var(--radius-sm);
  background: var(--card-icon-bg, rgba(37,99,235,0.08));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem; transition: var(--transition); flex-shrink: 0;}
:where(html.ed-site) .card-icon-wrap i{font-size: 1.15rem; color: var(--card-accent, var(--accent)); transition: var(--transition);}
:where(html.ed-site) .subject-card:hover .card-icon-wrap{background: var(--card-accent, var(--accent));}
:where(html.ed-site) .subject-card:hover .card-icon-wrap i{color: var(--white);}
:where(html.ed-site) .subject-card h2{font-size: 1rem; font-weight: 700; color: var(--navy); margin-bottom: 0.45rem; line-height: 1.3;}
:where(html.ed-site) .subject-card p{font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1.125rem; flex: 1;}
:where(html.ed-site) .resource-badges{display: flex; flex-wrap: wrap; gap: 0.3rem; margin-bottom: 1.125rem;}
:where(html.ed-site) .rbadge{font-size: 0.66rem; font-weight: 700; padding: 2px 8px; border-radius: 4px; white-space: nowrap; letter-spacing: 0.03em;}
:where(html.ed-site) .rbadge-handout{background: #dbeafe; color: #1d4ed8;}
:where(html.ed-site) .rbadge-lecture{background: #e0e7ff; color: #4338ca;}
:where(html.ed-site) .rbadge-tutorial{background: #dcfce7; color: #15803d;}
:where(html.ed-site) .rbadge-lab{background: #ffedd5; color: #c2410c;}
:where(html.ed-site) .card-action{display: inline-flex; align-items: center; gap: 5px; font-size: 0.8rem; font-weight: 700; color: var(--card-accent, var(--accent)); margin-top: auto;}
:where(html.ed-site) .card-action i{font-size: 0.7rem; transition: transform 0.18s ease;}
:where(html.ed-site) .subject-card:hover .card-action i{transform: translateX(4px);}
:where(html.ed-site) .controls{background: var(--white); border-bottom: 1px solid var(--border); padding: 1rem 0; position: sticky; top: var(--topbar-h); z-index: 900;}
:where(html.ed-site) .controls-inner{display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; max-width: var(--content-max); margin: 0 auto; padding: 0 1rem;}
:where(html.ed-site) .search-wrap{position: relative; flex: 1; min-width: 200px;}
:where(html.ed-site) .search-wrap input{width: 100%; padding: 0.55rem 0.875rem 0.55rem 2.25rem; border: 1px solid var(--border); border-radius: 7px; font-size: 0.875rem; font-family: var(--font-body); background: var(--off-white); color: var(--navy); transition: var(--transition);}
:where(html.ed-site) .search-wrap input:focus{outline: none; border-color: var(--accent); background: var(--white); box-shadow: 0 0 0 3px rgba(var(--accent-rgb)/0.1);}
:where(html.ed-site) .search-wrap i{position: absolute; left: 0.8rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.82rem; pointer-events: none;}
:where(html.ed-site) .filters{display: flex; gap: 0.35rem; flex-wrap: wrap;}
:where(html.ed-site) .filter-btn{border: 1px solid var(--border); background: var(--off-white); color: var(--text-muted); font-family: var(--font-body); font-size: 0.76rem; font-weight: 600; padding: 0.375rem 0.9rem; border-radius: 50px; cursor: pointer; transition: var(--transition); white-space: nowrap;}
:where(html.ed-site) .filter-btn:hover{border-color: var(--accent); color: var(--accent);}
:where(html.ed-site) .filter-btn.active{background: var(--accent); border-color: var(--accent); color: var(--white);}
:where(html.ed-site) .sm-main{max-width: var(--content-max); margin: 0 auto; padding: 2.25rem 1rem 4rem;}
:where(html.ed-site) .subject-section{margin-bottom: 2.5rem;}
:where(html.ed-site) .subject-section-header{display: flex; align-items: center; gap: 0.625rem; margin-bottom: 1.125rem; padding-bottom: 0.625rem; border-bottom: 2px solid var(--border);}
:where(html.ed-site) .subject-section-header i{width: 30px; height: 30px; background: rgba(var(--accent-rgb)/0.1); border-radius: 7px; display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 0.85rem; flex-shrink: 0;}
:where(html.ed-site) .subject-section-header h2{font-size: 1.2rem; font-weight: 700; color: var(--navy);}
:where(html.ed-site) .subject-section-header a.section-page-link{margin-left: auto; font-size: 0.78rem; font-weight: 600; color: var(--accent); display: flex; align-items: center; gap: 3px; white-space: nowrap;}
:where(html.ed-site) .subject-section-header a.section-page-link:hover{color: var(--amber-dark);}
:where(html.ed-site) .cards-grid{display: grid; grid-template-columns: repeat(auto-fill,minmax(300px,1fr)); gap: 0.875rem;}
:where(html.ed-site) .sm-card{background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: box-shadow 0.2s ease, border-color 0.2s ease;}
:where(html.ed-site) .sm-card:hover{box-shadow: var(--shadow-md); border-color: rgba(var(--accent-rgb)/0.2);}
:where(html.ed-site) .card-toggle{display: flex; align-items: center; justify-content: space-between; padding: 0.9rem 1.125rem; cursor: pointer; gap: 0.625rem; border: none; background: none; width: 100%; text-align: left;}
:where(html.ed-site) .card-toggle-left{display: flex; align-items: center; gap: 0.55rem;}
:where(html.ed-site) .card-toggle-left i{color: var(--accent); font-size: 0.9rem; width: 17px; text-align: center;}
:where(html.ed-site) .card-toggle-left span{font-weight: 600; font-size: 0.9rem; color: var(--navy);}
:where(html.ed-site) .card-count{font-size: 0.7rem; font-weight: 600; color: var(--text-muted); background: var(--off-white); border: 1px solid var(--border); padding: 1px 6px; border-radius: 50px;}
:where(html.ed-site) .card-chevron{color: var(--text-muted); font-size: 0.72rem; transition: transform 0.22s ease; flex-shrink: 0;}
:where(html.ed-site) .card-toggle[aria-expanded="true"] .card-chevron{transform: rotate(180deg);}
:where(html.ed-site) .card-items{border-top: 1px solid var(--border);}
:where(html.ed-site) .card-items.hidden{display: none;}
:where(html.ed-site) .item-row{display: flex; align-items: center; gap: 0.55rem; padding: 0.6rem 1.125rem; border-bottom: 1px solid rgba(0,0,0,0.04); transition: background 0.15s ease;}
:where(html.ed-site) .item-row:last-child{border-bottom: none;}
:where(html.ed-site) .item-row:hover{background: rgba(var(--accent-rgb)/0.04);}
:where(html.ed-site) .item-row a{flex: 1; font-size: 0.85rem; color: var(--navy); font-weight: 500;}
:where(html.ed-site) .item-row a:hover{color: var(--accent);}
:where(html.ed-site) .item-row.hidden{display: none;}
:where(html.ed-site) .badge{font-size: 0.63rem; font-weight: 700; padding: 2px 7px; border-radius: 4px; white-space: nowrap; flex-shrink: 0;}
:where(html.ed-site) .badge-lecture{background: #dbeafe; color: #1d4ed8;}
:where(html.ed-site) .badge-tutorial{background: #dcfce7; color: #15803d;}
:where(html.ed-site) .badge-lab{background: #ffedd5; color: #c2410c;}
:where(html.ed-site) .badge-formula{background: #f3e8ff; color: #7e22ce;}
:where(html.ed-site) .badge-handout{background: #ccfbf1; color: #0f766e;}
:where(html.ed-site) .badge-notes{background: #fef9c3; color: #854d0e;}
:where(html.ed-site) .no-results{text-align: center; padding: 4rem 1rem; color: var(--text-muted);}
:where(html.ed-site) .no-results i{font-size: 2rem; margin-bottom: 0.75rem; opacity: 0.4; display: block;}
:where(html.ed-site) .no-results h3{font-size: 1rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--navy);}
:where(html.ed-site) .hero{background: var(--navy);
  padding: 5.5rem 0 0;
  position: relative; overflow: hidden;
  color: var(--white);}
:where(html.ed-site) .hero::before{content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 50%, rgba(var(--accent-rgb)/0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 80% at 10% 80%, rgba(245,158,11,0.08) 0%, transparent 60%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cdefs%3E%3Cpattern id='g' width='60' height='60' patternUnits='userSpaceOnUse'%3E%3Cpath d='M60 0H0v60' fill='none' stroke='%23ffffff' stroke-width='0.3' opacity='0.07'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100%25' height='100%25' fill='url(%23g)'/%3E%3C/svg%3E");
  pointer-events: none;}
:where(html.ed-site) .hero-inner-home{position: relative; z-index: 1; text-align: center;}
:where(html.ed-site) .hero-eyebrow-home{display: inline-flex; align-items: center; gap: 7px;
  background: rgba(245,158,11,0.12); border: 1px solid rgba(245,158,11,0.25);
  color: var(--amber); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 5px 13px; border-radius: 50px; margin-bottom: 1.5rem;}
:where(html.ed-site) .hero-title-home{font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 400; color: var(--white);
  line-height: 1.1; margin-bottom: 1.125rem;}
:where(html.ed-site) .hero-title-home em{font-style: italic; color: var(--amber);}
:where(html.ed-site) .hero-subtitle-home{font-size: 1.05rem; color: rgba(255,255,255,0.65);
  max-width: 580px; margin: 0 auto 2.5rem; line-height: 1.75;}
:where(html.ed-site) .hero-actions-home{display: flex; gap: 0.875rem; justify-content: center; flex-wrap: wrap; margin-bottom: 4rem;}
:where(html.ed-site) .hero-stats-home{display: grid; grid-template-columns: repeat(4,1fr);
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.15);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);}
:where(html.ed-site) .hero-stat-home{padding: 1.75rem 1rem; text-align: center; border-right: 1px solid rgba(255,255,255,0.07);}
:where(html.ed-site) .hero-stat-home:last-child{border-right: none;}
:where(html.ed-site) .hero-stat-num-home{font-family: var(--font-display); font-size: 2.4rem; color: var(--amber); line-height: 1; margin-bottom: 5px;}
:where(html.ed-site) .hero-stat-lbl-home{font-size: 0.7rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: rgba(255,255,255,0.4);}
:where(html.ed-site) .features{padding: 5.5rem 0; background: var(--white);}
:where(html.ed-site) .feature-card{background: var(--off-white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.875rem; height: 100%;
  transition: var(--transition); position: relative; overflow: hidden;}
:where(html.ed-site) .feature-card::after{content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--amber));
  transform: scaleX(0); transform-origin: left; transition: transform 0.35s ease;}
:where(html.ed-site) .feature-card:hover{transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(var(--accent-rgb)/0.2);}
:where(html.ed-site) .feature-card:hover::after{transform: scaleX(1);}
:where(html.ed-site) .feature-icon-wrap{width: 50px; height: 50px; background: rgba(var(--accent-rgb)/0.08); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; margin-bottom: 1.125rem; transition: var(--transition);}
:where(html.ed-site) .feature-card:hover .feature-icon-wrap{background: var(--accent);}
:where(html.ed-site) .feature-icon-wrap i{font-size: 1.3rem; color: var(--accent); transition: var(--transition);}
:where(html.ed-site) .feature-card:hover .feature-icon-wrap i{color: var(--white);}
:where(html.ed-site) .feature-card h3{font-size: 1.1rem; font-weight: 700; color: var(--navy); margin-bottom: 0.55rem;}
:where(html.ed-site) .feature-card p{font-size: 0.92rem; color: var(--text-muted); line-height: 1.65;}
:where(html.ed-site) .about{background: var(--navy); color: var(--white); padding: 5.5rem 0; position: relative; overflow: hidden;}
:where(html.ed-site) .about::before{content: ""; position: absolute; bottom: -150px; left: -100px; width: 500px; height: 500px; background: radial-gradient(circle, rgba(var(--accent-rgb)/0.18) 0%, transparent 68%); pointer-events: none;}
:where(html.ed-site) .about .section-heading{color: var(--white);}
:where(html.ed-site) .about-text p{color: rgba(255,255,255,0.68); font-size: 0.975rem; line-height: 1.8; margin-bottom: 1.125rem;}
:where(html.ed-site) .about-btn{display: inline-flex; align-items: center; gap: 7px; background: transparent; border: 2px solid var(--amber); color: var(--amber); font-weight: 600; font-size: 0.875rem; padding: 0.65rem 1.625rem; border-radius: var(--radius-sm); transition: var(--transition); margin-top: 0.375rem;}
:where(html.ed-site) .about-btn:hover{background: var(--amber); color: var(--navy); transform: translateY(-2px);}
:where(html.ed-site) .pillars{display: flex; flex-direction: column; gap: 0.75rem;}
:where(html.ed-site) .pillar{background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-left: 3px solid var(--accent); border-radius: var(--radius-sm); padding: 1.125rem 1.25rem; display: flex; align-items: center; gap: 1rem; transition: var(--transition);}
:where(html.ed-site) .pillar:nth-child(2){border-left-color: var(--amber);}
:where(html.ed-site) .pillar:nth-child(3){border-left-color: var(--emerald);}
:where(html.ed-site) .pillar:nth-child(4){border-left-color: #7c3aed;}
:where(html.ed-site) .pillar:hover{background: rgba(255,255,255,0.07); transform: translateX(4px);}
:where(html.ed-site) .pillar-icon{width: 42px; height: 42px; border-radius: 50%; background: rgba(var(--accent-rgb)/0.15); display: flex; align-items: center; justify-content: center; flex-shrink: 0;}
:where(html.ed-site) .pillar:nth-child(2) .pillar-icon{background: rgba(245,158,11,0.15);}
:where(html.ed-site) .pillar:nth-child(3) .pillar-icon{background: rgba(16,185,129,0.15);}
:where(html.ed-site) .pillar:nth-child(4) .pillar-icon{background: rgba(124,58,237,0.15);}
:where(html.ed-site) .pillar-icon i{color: var(--accent-light); font-size: 1.05rem;}
:where(html.ed-site) .pillar:nth-child(2) .pillar-icon i{color: var(--amber);}
:where(html.ed-site) .pillar:nth-child(3) .pillar-icon i{color: var(--emerald);}
:where(html.ed-site) .pillar:nth-child(4) .pillar-icon i{color: #8b5cf6;}
:where(html.ed-site) .pillar-body h4{font-size: 0.9rem; font-weight: 700; color: var(--white); margin-bottom: 2px;}
:where(html.ed-site) .pillar-body p{font-size: 0.79rem; color: rgba(255,255,255,0.48); margin: 0;}
:where(html.ed-site) .subjects{padding: 5.5rem 0; background: var(--off-white);}
:where(html.ed-site) .subjects-section{padding: 5.5rem 0; background: var(--off-white);}
:where(html.ed-site) .subject-num{font-family: var(--font-display); font-size: 2.25rem; color: var(--border); line-height: 1; margin-bottom: 0.625rem; transition: color 0.2s ease;}
:where(html.ed-site) .subject-card:hover .subject-num{color: rgba(var(--accent-rgb)/0.12);}
:where(html.ed-site) .subject-links{display: flex; gap: 0.45rem; flex-wrap: wrap;}
:where(html.ed-site) .subject-link{display: inline-flex; align-items: center; gap: 4px; font-size: 0.76rem; font-weight: 600; padding: 4px 11px; border-radius: 4px; border: 1px solid var(--border); color: var(--navy); background: var(--off-white); transition: var(--transition);}
:where(html.ed-site) .subject-link:hover{background: var(--accent); color: var(--white); border-color: var(--accent);}
:where(html.ed-site) .subject-link i{font-size: 0.66rem;}
:where(html.ed-site) .stats{background: var(--navy-mid); color: var(--white); padding: 4rem 0;}
:where(html.ed-site) .stats-grid{display: grid; grid-template-columns: repeat(4,1fr);}
:where(html.ed-site) .stat-cell-home{padding: 1.75rem 1rem; text-align: center; border-right: 1px solid rgba(255,255,255,0.07);}
:where(html.ed-site) .stat-cell-home:last-child{border-right: none;}
:where(html.ed-site) .stat-cell-home .stat-num{font-family: var(--font-display); font-size: 2.2rem; color: var(--amber); line-height: 1; margin-bottom: 0.3rem;}
:where(html.ed-site) .stat-cell-home .stat-lbl{font-size: 0.7rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.4);}
@media (max-width: 1023px){
  :where(html.ed-site) .subjects-grid{grid-template-columns: repeat(2,1fr);}
  :where(html.ed-site) .hero-stats-home{grid-template-columns: repeat(2,1fr);}
  :where(html.ed-site) .hero-stat-home:nth-child(2){border-right: none;}
  :where(html.ed-site) .hero-stat-home:nth-child(1), :where(html.ed-site) .hero-stat-home:nth-child(2){border-bottom: 1px solid rgba(255,255,255,0.07);}
  :where(html.ed-site) .stats-grid{grid-template-columns: repeat(2,1fr);}
  :where(html.ed-site) .stat-cell-home:nth-child(2){border-right: none;}
  :where(html.ed-site) .stat-cell-home:nth-child(1), :where(html.ed-site) .stat-cell-home:nth-child(2){border-bottom: 1px solid rgba(255,255,255,0.07);}
}
@media (max-width: 991px){
  :root:where(.ed-site){--topbar-h: 60px;}
  :where(html.ed-site) .hero-inner--split{grid-template-columns: 1fr; text-align: center;}
  :where(html.ed-site) .hero-inner--split .hero-subtitle{max-width: 100%; margin-left: auto; margin-right: auto;}
  :where(html.ed-site) .hero-inner--split .hero-actions{justify-content: center;}
  :where(html.ed-site) .hero-schematic{display: none;}
  :where(html.ed-site) .page-layout{grid-template-columns: 1fr; gap: 1rem;}
  :where(html.ed-site) .ed-sidebar{width: 100%; position: static; max-height: 360px;}
  :where(html.ed-site) .ed-content{width: 100%;}
  :where(html.ed-site) .content-frame{height: 60vh; min-height: 400px;}
  :where(html.ed-site) .feature-strip-grid{grid-template-columns: repeat(2,1fr);}
  :where(html.ed-site) .stats-row{grid-template-columns: repeat(2,1fr);}
  :where(html.ed-site) .curriculum-accordion .accordion-body ul{grid-template-columns: 1fr;}
}
@media (max-width: 767px){
  :where(html.ed-site) .page-hero{padding: 3.5rem 0 3rem;}
  :where(html.ed-site) .feature-strip-grid{grid-template-columns: 1fr;}
  :where(html.ed-site) .outcomes-grid{grid-template-columns: 1fr;}
  :where(html.ed-site) .cta-actions{flex-direction: column; align-items: center;}
  :where(html.ed-site) .cta-actions a{width: 100%; justify-content: center;}
  :where(html.ed-site) .hero-actions, :where(html.ed-site) .hero-actions-home{flex-direction: column; align-items: center;}
  :where(html.ed-site) .hero-actions a, :where(html.ed-site) .hero-actions-home a{width: 100%; max-width: 300px; justify-content: center;}
  :where(html.ed-site) .cards-grid{grid-template-columns: 1fr;}
}
@media (max-width: 575px){
  :where(html.ed-site) .subjects-grid{grid-template-columns: 1fr;}
  :where(html.ed-site) .stats-row{grid-template-columns: repeat(2,1fr);}
  :where(html.ed-site) .section-body{padding: 1.125rem;}
  :where(html.ed-site) .welcome-panel{padding: 1.25rem;}
  :where(html.ed-site) .topics-grid{grid-template-columns: 1fr 1fr;}
  :where(html.ed-site) .hero-stat{padding: 0.3rem 1rem;}
}
@media print{
  :where(html.ed-site) .ed-header, :where(html.ed-site) .footer, :where(html.ed-site) .back-top, :where(html.ed-site) .course-nav, :where(html.ed-site) .breadcrumb-bar{display: none !important;}
  :where(html.ed-site) body{background: white; color: black;}
  :where(html.ed-site) .content-card{border: 1px solid #ccc;}
  :where(html.ed-site) a[href]::after{content: " (" attr(href) ")"; font-size: 0.7em;}
}

/* ============ lecture-style.css ============ */
:root:where(.ed-lecture){--navy:        #0d1b2a;
  --navy-mid:    #1a3a5c;
  --navy-light:  #264d73;
  --steel:       #4a7fa5;
  --sky:         #7fb8d4;
  --cream:       #f5f0e8;
  --warm-white:  #faf8f4;
  --gold:        #c9a84c;
  --gold-light:  #e8d08a;
  --red:         #c0392b;
  --green:       #1a6b3c;
  --text-dark:   #1a1a2e;
  --text-mid:    #334155;
  --text-light:  #64748b;
  --border:      #d4cfc6;
  --shadow-sm:   0 2px 8px rgba(13,27,42,0.08);
  --shadow-md:   0 8px 32px rgba(13,27,42,0.12);
  --shadow-lg:   0 20px 60px rgba(13,27,42,0.18);
  --radius:      6px;
  --radius-lg:   12px;
  --ff-display:  "Playfair Display", Georgia, serif;
  --ff-body:     "Source Serif 4", Georgia, serif;
  --ff-mono:     "JetBrains Mono", "Courier New", monospace;}
:where(html.ed-lecture), :where(html.ed-lecture) *, :where(html.ed-lecture)::before, :where(html.ed-lecture) *::before, :where(html.ed-lecture)::after, :where(html.ed-lecture) *::after{box-sizing: border-box; margin: 0; padding: 0;}
html:where(.ed-lecture){scroll-behavior: smooth; font-size: 16px;}
:where(html.ed-lecture) body{font-family: var(--ff-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-dark);
  background: var(--warm-white);
  -webkit-font-smoothing: antialiased;}
:where(html.ed-lecture) .site-nav{position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  border-bottom: 2px solid var(--gold);
  padding: 0 2rem;}
:where(html.ed-lecture) .nav-inner{max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: 1rem;}
:where(html.ed-lecture) .nav-brand{font-family: var(--ff-display);
  font-size: 1rem;
  color: var(--gold-light);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.02em;}
:where(html.ed-lecture) .nav-links{display: flex;
  gap: 0.25rem;
  list-style: none;
  flex-wrap: wrap;}
:where(html.ed-lecture) .nav-links a{display: block;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  color: #b0c4d8;
  text-decoration: none;
  font-size: 0.82rem;
  font-family: var(--ff-body);
  letter-spacing: 0.04em;
  transition: background 0.2s, color 0.2s;}
:where(html.ed-lecture) .nav-links a:hover, :where(html.ed-lecture) .nav-links a.active{background: var(--navy-light);
  color: #fff;}
:where(html.ed-lecture) .page-hero{background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 60%, #1f4870 100%);
  color: white;
  padding: 4rem 2rem 3rem;
  position: relative;
  overflow: hidden;}
:where(html.ed-lecture) .page-hero::before{content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(201,168,76,0.08) 0%, transparent 70%),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,0.015) 40px,
      rgba(255,255,255,0.015) 41px
    );
  pointer-events: none;}
:where(html.ed-lecture) .hero-inner{max-width: 1100px;
  margin: 0 auto;
  position: relative;}
:where(html.ed-lecture) .hero-tag{display: inline-block;
  background: rgba(201,168,76,0.2);
  border: 1px solid rgba(201,168,76,0.5);
  color: var(--gold-light);
  font-size: 0.75rem;
  font-family: var(--ff-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
  margin-bottom: 1.25rem;}
:where(html.ed-lecture) .hero-title{font-family: var(--ff-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 0.5rem;}
:where(html.ed-lecture) .hero-subtitle{font-family: var(--ff-display);
  font-style: italic;
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--sky);
  margin-bottom: 1.5rem;}
:where(html.ed-lecture) .hero-meta{display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: #8faec8;
  font-family: var(--ff-body);}
:where(html.ed-lecture) .hero-meta span::before{content: "▪ ";
  color: var(--gold);}
:where(html.ed-lecture) .breadcrumb{background: var(--cream);
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 2rem;}
:where(html.ed-lecture) .breadcrumb-inner{max-width: 1100px;
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--text-light);
  font-family: var(--ff-body);}
:where(html.ed-lecture) .breadcrumb-inner a{color: var(--navy-mid);
  text-decoration: none;}
:where(html.ed-lecture) .breadcrumb-inner a:hover{text-decoration: underline;}
:where(html.ed-lecture) .breadcrumb-inner span{color: var(--text-light); margin: 0 0.4rem;}
:where(html.ed-lecture) .page-layout{max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;}
:where(html.ed-lecture) .toc-sidebar{position: sticky;
  top: 72px;}
:where(html.ed-lecture) .toc-box{background: var(--cream);
  border: 1px solid var(--border);
  border-left: 3px solid var(--navy-mid);
  border-radius: var(--radius);
  padding: 1.25rem 1rem;}
:where(html.ed-lecture) .toc-box h3{font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);}
:where(html.ed-lecture) .toc-box ol{list-style: none;
  counter-reset: toc-counter;}
:where(html.ed-lecture) .toc-box li{counter-increment: toc-counter;
  margin-bottom: 0.4rem;}
:where(html.ed-lecture) .toc-box a{display: flex;
  gap: 0.5rem;
  color: var(--text-mid);
  text-decoration: none;
  font-size: 0.82rem;
  line-height: 1.4;
  padding: 0.25rem 0.4rem;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s;}
:where(html.ed-lecture) .toc-box a::before{content: counter(toc-counter, decimal-leading-zero);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  color: var(--steel);
  min-width: 1.6em;
  flex-shrink: 0;
  margin-top: 0.05em;}
:where(html.ed-lecture) .toc-box a:hover{background: rgba(26,58,92,0.07);
  color: var(--navy);}
:where(html.ed-lecture) .lecture-content{min-width: 0;}
:where(html.ed-lecture) .section-heading{margin-top: 3.5rem;
  margin-bottom: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);}
:where(html.ed-lecture) .section-heading:first-child{margin-top: 0; border-top: none; padding-top: 0;}
:where(html.ed-lecture) .section-number{font-family: var(--ff-mono);
  font-size: 0.72rem;
  color: var(--steel);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.3rem;}
:where(html.ed-lecture) .section-heading h2{font-family: var(--ff-display);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.25;}
:where(html.ed-lecture) .card-grid{display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.25rem 0;}
:where(html.ed-lecture) .card{background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-sm);}
:where(html.ed-lecture) .card-title{font-family: var(--ff-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy-mid);
  margin-bottom: 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--navy-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;}
:where(html.ed-lecture) .card-title .icon{width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--navy-mid);
  color: white;
  font-size: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;}
:where(html.ed-lecture) .card ul{padding-left: 1.1rem;
  font-size: 0.9rem;
  color: var(--text-mid);}
:where(html.ed-lecture) .card ul li{margin-bottom: 0.3rem;}
:where(html.ed-lecture) .card p{font-size: 0.9rem; color: var(--text-mid);}
:where(html.ed-lecture) .card-alert{background: #fff8f0;
  border-color: #e8a050;
  border-left: 4px solid #e07020;}
:where(html.ed-lecture) .card-alert .card-title{color: #8b3a00; border-color: #e07020;}
:where(html.ed-lecture) .card-example{background: #f0f8f0;
  border-color: #80c080;
  border-left: 4px solid var(--green);}
:where(html.ed-lecture) .card-example .card-title{color: var(--green); border-color: var(--green);}
:where(html.ed-lecture) .card-navy{background: var(--navy);
  border-color: var(--navy-light);}
:where(html.ed-lecture) .card-navy .card-title{color: var(--gold-light); border-color: var(--navy-light);}
:where(html.ed-lecture) .card-navy p, :where(html.ed-lecture) .card-navy ul, :where(html.ed-lecture) .card-navy li{color: #c0d4e8;}
:where(html.ed-lecture) .eq-block{background: #eef4fa;
  border-left: 4px solid var(--steel);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.1rem 1.5rem;
  margin: 1.25rem 0;
  overflow-x: auto;
  display: block;
  width: 100%;}
:where(html.ed-lecture) .eq-block .eq-label{font-family: var(--ff-mono);
  font-size: 0.68rem;
  color: var(--navy-mid);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;}
:where(html.ed-lecture) .eq-block .math{font-family: var(--ff-mono);
  font-size: 1.05rem;
  color: var(--text-dark);
  letter-spacing: 0.02em;}
:where(html.ed-lecture) .eq-block .math sub, :where(html.ed-lecture) .eq-block .math sup{font-size: 0.65em;}
:where(html.ed-lecture) .eq-inline{font-family: var(--ff-mono);
  font-size: 0.92em;
  background: rgba(26,58,92,0.08);
  border: 1px solid rgba(26,58,92,0.15);
  border-radius: 3px;
  padding: 0.05em 0.35em;
  color: var(--navy-mid);}
:where(html.ed-lecture) .eq-desc{display: block;
  width: 100%;
  margin-top: 0.4rem;
  margin-bottom: 0.75rem;
  font-size: 0.93rem;
  color: var(--text-mid);
  line-height: 1.6;
  clear: both;}
:where(html.ed-lecture) .key-result{background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin: 1.5rem 0;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  box-shadow: var(--shadow-md);}
:where(html.ed-lecture) .key-result .kr-icon{font-size: 1.6rem;
  flex-shrink: 0;
  margin-top: 0.1rem;}
:where(html.ed-lecture) .key-result .kr-body{}
:where(html.ed-lecture) .key-result .kr-label{font-family: var(--ff-mono);
  font-size: 0.68rem;
  color: var(--gold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;}
:where(html.ed-lecture) .key-result .kr-title{font-family: var(--ff-display);
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 0.4rem;}
:where(html.ed-lecture) .key-result .kr-body p{font-size: 0.9rem;
  color: #9bb8d4;
  line-height: 1.6;}
:where(html.ed-lecture) .data-table-wrap{overflow-x: auto; margin: 1.25rem 0;}
:where(html.ed-lecture) .data-table{width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  font-family: var(--ff-body);}
:where(html.ed-lecture) .data-table thead tr, :where(html.ed-lecture) .data-table tr.header{background-color: #2c3e50;
  color: #ffffff;}
:where(html.ed-lecture) .data-table thead th, :where(html.ed-lecture) .data-table thead td, :where(html.ed-lecture) .data-table tr.header th, :where(html.ed-lecture) .data-table tr.header td{background-color: #2c3e50;
  color: #ffffff;
  padding: 0.7rem 1rem;
  text-align: left;
  font-family: var(--ff-body);
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 0.82rem;
  border-bottom: 2px solid #1a2632;}
:where(html.ed-lecture) .data-table thead .highlight, :where(html.ed-lecture) .data-table thead strong.highlight{color: #ffd700;
  font-weight: 600;}
:where(html.ed-lecture) .data-table tbody tr:nth-child(odd){background: var(--cream);}
:where(html.ed-lecture) .data-table tbody tr:nth-child(even){background: #fff;}
:where(html.ed-lecture) .data-table tbody tr:hover{background: rgba(74,127,165,0.08);}
:where(html.ed-lecture) .data-table td{padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-mid);
  vertical-align: middle;}
:where(html.ed-lecture) .data-table td:first-child, :where(html.ed-lecture) .data-table tbody th[scope="row"]{font-weight: 600; color: var(--text-dark);}
:where(html.ed-lecture) .chip{display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(26,58,92,0.1);
  border: 1px solid rgba(26,58,92,0.2);
  color: var(--navy-mid);
  font-size: 0.8rem;
  font-family: var(--ff-mono);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-weight: 500;}
:where(html.ed-lecture) .chip-gold{background: rgba(201,168,76,0.15);
  border-color: rgba(201,168,76,0.4);
  color: #7a5c10;}
:where(html.ed-lecture) .chip-red{background: rgba(192,57,43,0.1);
  border-color: rgba(192,57,43,0.3);
  color: var(--red);}
:where(html.ed-lecture) .chip-green{background: rgba(26,107,60,0.1);
  border-color: rgba(26,107,60,0.3);
  color: var(--green);}
:where(html.ed-lecture) .insight-strip{background: var(--cream);
  border: 1px solid var(--border);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.9rem 1.25rem;
  margin: 1rem 0;
  font-size: 0.9rem;
  color: var(--text-mid);
  display: block;
  width: 100%;}
:where(html.ed-lecture) .insight-strip strong{color: var(--navy);}
:where(html.ed-lecture) .step-list{counter-reset: step-ctr;
  list-style: none;
  padding: 0;
  margin: 0.75rem 0;}
:where(html.ed-lecture) .step-list li{counter-increment: step-ctr;
  display: flex;
  gap: 0.9rem;
  margin-bottom: 0.65rem;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--text-mid);}
:where(html.ed-lecture) .step-list li::before{content: counter(step-ctr);
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  background: var(--navy-mid);
  color: white;
  border-radius: 50%;
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.2em;}
:where(html.ed-lecture) .fig-placeholder{background: linear-gradient(135deg, var(--cream) 0%, #ebe5d8 100%);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  color: var(--text-light);
  font-size: 0.82rem;
  font-family: var(--ff-mono);
  margin: 1rem 0;}
:where(html.ed-lecture) .fig-placeholder .fig-icon{font-size: 2.5rem; display: block; margin-bottom: 0.5rem;}
:where(html.ed-lecture) .fig-caption{text-align: center;
  font-size: 0.8rem;
  font-style: italic;
  color: var(--text-light);
  margin-top: 0.5rem;
  margin-bottom: 1rem;}
:where(html.ed-lecture) .fig-img{max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: block;
  margin: 0.5rem auto 0;
  box-shadow: var(--shadow-sm);}
:where(html.ed-lecture) .lecture-nav{background: var(--cream);
  border-top: 2px solid var(--border);
  padding: 2rem;
  margin-top: 4rem;}
:where(html.ed-lecture) .lecture-nav-inner{max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;}
:where(html.ed-lecture) .lec-nav-btn{display: flex;
  flex-direction: column;
  padding: 0.75rem 1.25rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text-dark);
  transition: box-shadow 0.2s, border-color 0.2s;
  min-width: 180px;
  box-shadow: var(--shadow-sm);}
:where(html.ed-lecture) .lec-nav-btn:hover{border-color: var(--navy-mid); box-shadow: var(--shadow-md);}
:where(html.ed-lecture) .lec-nav-btn .dir{font-size: 0.7rem; color: var(--text-light); font-family: var(--ff-mono); letter-spacing: 0.08em; margin-bottom: 0.2rem;}
:where(html.ed-lecture) .lec-nav-btn .title{font-size: 0.9rem; font-weight: 600; color: var(--navy-mid);}
:where(html.ed-lecture) .lec-nav-btn.next{text-align: right;}
:where(html.ed-lecture) .lec-nav-center{font-family: var(--ff-mono); font-size: 0.75rem; color: var(--text-light);}
:where(html.ed-lecture) .site-footer{background: var(--navy);
  color: #7a9bb8;
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: 0.8rem;
  font-family: var(--ff-body);}
:where(html.ed-lecture) .site-footer a{color: var(--sky); text-decoration: none;}
@media (max-width: 800px){
  :where(html.ed-lecture) .page-layout{grid-template-columns: 1fr;
    gap: 0;
    padding: 1.5rem 1rem;}
  :where(html.ed-lecture) .toc-sidebar{position: static; margin-bottom: 2rem;}
  :where(html.ed-lecture) .nav-brand{font-size: 0.85rem;}
  :where(html.ed-lecture) .card-grid{grid-template-columns: 1fr;}
  :where(html.ed-lecture) .page-hero{padding: 2.5rem 1rem 2rem;}
  :where(html.ed-lecture) .hero-title{font-size: 1.5rem;}
  :where(html.ed-lecture) .lecture-nav-inner{flex-direction: column; align-items: stretch;}
  :where(html.ed-lecture) .lec-nav-btn{min-width: unset;}
  :where(html.ed-lecture) .lec-nav-btn.next{text-align: left;}
  :where(html.ed-lecture) .key-result{flex-direction: column; gap: 0.75rem;}
}
@media (max-width: 480px){
  :where(html.ed-lecture) .nav-links{display: none;}
}
:where(html.ed-lecture) .mt-sm{margin-top: 0.75rem;}
:where(html.ed-lecture) .mt-md{margin-top: 1.25rem;}
:where(html.ed-lecture) .mt-lg{margin-top: 2rem;}
:where(html.ed-lecture) .mb-sm{margin-bottom: 0.75rem;}
:where(html.ed-lecture) .mb-md{margin-bottom: 1.25rem;}
:where(html.ed-lecture) .highlight{color: var(--navy-mid); font-weight: 600;}
:where(html.ed-lecture) .hl-gold{color: #9a7010; font-weight: 600;}
:where(html.ed-lecture) .prose p{margin-bottom: 1rem; font-size: 0.95rem; color: var(--text-mid);}
:where(html.ed-lecture) .prose p:last-child{margin-bottom: 0;}
:where(html.ed-lecture) .two-col{display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin: 1.25rem 0;}
@media (max-width: 640px){
  :where(html.ed-lecture) .two-col{grid-template-columns: 1fr;}
}
:where(html.ed-lecture) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.ed-lecture) .lecture-content figure{max-width: 100%;}
:where(html.ed-lecture) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.ed-lecture) .card > .card-grid{margin-top: 0.75rem;}
:where(html.ed-lecture) .card .eq-block{border-radius: var(--radius);}
:where(html.ed-lecture) .card .data-table-wrap{margin-top: 0.75rem;}
:where(html.ed-lecture) .lecture-content .col-fig{display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin: 1rem 0;}
:where(html.ed-lecture) .col-stack{display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0.75rem 0;}
:where(html.ed-lecture) .col-item{}
:where(html.ed-lecture) .lecture-content .card-grid:not(.col-fig){grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));}
:where(html.ed-lecture) .lecture-list{padding-left: 1.25rem;
  margin: 0.5rem 0;
  font-size: 0.9rem;
  color: var(--text-mid);}
:where(html.ed-lecture) .lecture-list li{margin-bottom: 0.4rem;
  line-height: 1.65;}
:where(html.ed-lecture) .lecture-list li ul, :where(html.ed-lecture) .lecture-list li ol{margin-top: 0.3rem;}
:where(html.ed-lecture) .lecture-content h1{font-family: var(--ff-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  margin: 2rem 0 0.75rem;
  line-height: 1.3;}
:where(html.ed-lecture) .text-sm, :where(html.ed-lecture) .text-xs{font-size: 0.875rem; color: var(--text-mid);}
:where(html.ed-lecture) .num{font-family: var(--ff-mono); color: var(--navy-mid); font-weight: 600;}
:where(html.ed-lecture) .card-navy .highlight, :where(html.ed-lecture) .key-result .highlight{color: #ffd97a;}
:where(html.ed-lecture) .card-navy .hl-gold, :where(html.ed-lecture) .key-result .hl-gold{color: #f5c451;}
:where(html.ed-lecture) .card-navy strong, :where(html.ed-lecture) .key-result strong{color: #ffffff;}
:where(html.ed-lecture) .card-navy .lecture-list, :where(html.ed-lecture) .card-navy .lecture-list li, :where(html.ed-lecture) .card-navy .step-list li, :where(html.ed-lecture) .key-result .lecture-list, :where(html.ed-lecture) .key-result .lecture-list li, :where(html.ed-lecture) .key-result .step-list li{color: #c0d4e8;}
:where(html.ed-lecture) .card-navy .eq-desc, :where(html.ed-lecture) .key-result .eq-desc, :where(html.ed-lecture) .key-result .kr-body li p{color: #9bb8d4;}
:where(html.ed-lecture) .card-navy .step-list li::before, :where(html.ed-lecture) .key-result .step-list li::before{background: #4d7fb3; color: #0d1b2a;}
:where(html.ed-lecture) .hl-gold{color: #7d5a0c;}
:where(html.ed-lecture) .key-result .kr-body{min-width: 0; flex: 1 1 auto;}
:where(html.ed-lecture) .two-col > *, :where(html.ed-lecture) .card-grid > *{min-width: 0;}
:where(html.ed-lecture) .eq-block{max-width: 100%;}
:where(html.ed-lecture) .eq-block .math{max-width: 100%;}
:where(html.ed-lecture) mjx-container[display="true"]{max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 0.15rem;}
:where(html.ed-lecture) .data-table mjx-container{max-width: 100%;}
:where(html.ed-lecture) .lecture-content{overflow-wrap: break-word;}

/* ============ cls-fix.css ============ */
:root:where(.ed-cls){--topbar-h: 75px;}
:where(html.ed-cls) #header-container{min-height: var(--topbar-h);}
:where(html.ed-cls) .ed-header .navbar{min-height: calc(var(--topbar-h) - 1px);}
:where(html.ed-cls) #footer-container{min-height: 320px;}
@media (max-width: 991.98px){
  :root:where(.ed-cls){--topbar-h: 75px;}
  :where(html.ed-cls) #footer-container{min-height: 900px;}
}
:where(html.ed-cls) img{max-width: 100%;
  height: auto;}
:where(html.ed-cls) .img-ratio{aspect-ratio: var(--ar, 16 / 9);
  width: 100%;
  height: auto;
  object-fit: contain;
  background: var(--off-white, #f1f5f9);}
:where(html.ed-cls) .fig-placeholder, :where(html.ed-cls) figure.fig-placeholder{margin: 1rem auto;}
:where(html.ed-cls) .ad-slot{display: block;
  width: 100%;
  margin: 1.5rem auto;
  min-height: 100px;              
  contain: layout;
  background: var(--off-white, #f1f5f9);
  border-radius: var(--radius-sm, 6px);
  overflow: hidden;}
:where(html.ed-cls) .ad-slot::before{content: "Advertisement";
  display: block;
  text-align: center;
  font-size: .62rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted, #94a3b8);
  padding-top: .4rem;}
:where(html.ed-cls) .ad-slot > ins, :where(html.ed-cls) .ad-slot > .adsbygoogle{display: block; width: 100%;}
:where(html.ed-cls) .ad-slot--rect{min-height: 250px;}
@media (min-width: 768px){
  :where(html.ed-cls) .ad-slot{min-height: 90px;}
  :where(html.ed-cls) .ad-slot--rect{min-height: 250px;}
}
@media (min-width: 1200px){
  :where(html.ed-cls) .ad-slot--billboard{min-height: 250px;}
}
:where(html.ed-cls) .media-container{position: relative;
  display: block;
  width: 100%;
  aspect-ratio: var(--ar, 16 / 9);
  background: var(--off-white, #f1f5f9);
  border-radius: var(--radius, 10px);
  overflow: hidden;
  contain: layout paint;}
:where(html.ed-cls) .media-container > iframe, :where(html.ed-cls) .media-container > img, :where(html.ed-cls) .media-container > video, :where(html.ed-cls) .media-container > canvas, :where(html.ed-cls) .media-container > object{position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: contain;}
:where(html.ed-cls) .media-16x9{--ar: 16 / 9;}
:where(html.ed-cls) .media-4x3{--ar: 4 / 3;}
:where(html.ed-cls) .media-1x1{--ar: 1 / 1;}
:where(html.ed-cls) .media-container--auto{aspect-ratio: auto;
  min-height: var(--min-h, 220px);}
:where(html.ed-cls) .media-container--auto > img{position: static; height: auto;}
html:where(.ed-cls){scrollbar-gutter: stable;}

/* ==== shared inline blocks ==== */
:where(html.edb-7a9966b9) .chapter-grid{display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 0.75rem;
      margin: 1.25rem 0 0.5rem;}
:where(html.edb-7a9966b9) .chapter-link{display: flex; align-items: center; gap: 0.85rem;
      background: #fff; border: 1px solid var(--border);
      border-radius: var(--radius); padding: 0.75rem 0.9rem;
      text-decoration: none; box-shadow: var(--shadow-sm);
      transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;}
:where(html.edb-7a9966b9) .chapter-link:hover, :where(html.edb-7a9966b9) .chapter-link:focus-visible{border-color: var(--navy-mid); box-shadow: var(--shadow-md);
      transform: translateY(-2px); outline: none;}
:where(html.edb-7a9966b9) .chapter-link:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-7a9966b9) .chapter-num{flex-shrink: 0; width: 34px; height: 34px; border-radius: 8px;
      background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
      color: var(--gold-light); font-family: var(--ff-mono);
      font-size: 0.8rem; font-weight: 500;
      display: flex; align-items: center; justify-content: center;}
:where(html.edb-7a9966b9) .chapter-title{font-family: var(--ff-body); font-size: 0.9rem; font-weight: 600; color: var(--navy); line-height: 1.35;}
:where(html.edb-7a9966b9) .part-eyebrow{font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel);}
:where(html.edb-7a9966b9) .stat-row{display: flex; flex-wrap: wrap; gap: 2.5rem; margin-top: 1.75rem;}
:where(html.edb-7a9966b9) .stat-row .stat{display: flex; flex-direction: column;}
:where(html.edb-7a9966b9) .stat-row .stat .n{font-family: var(--ff-display); font-size: 2rem; font-weight: 700; color: var(--gold-light); line-height: 1;}
:where(html.edb-7a9966b9) .stat-row .stat .l{font-family: var(--ff-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: #8faec8; margin-top: 0.35rem;}
:where(html.edb-7a9966b9) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90;
      width: 44px; height: 44px; border: none; border-radius: 50%;
      background: var(--navy-mid); color: var(--gold-light); cursor: pointer;
      font-size: 1.1rem; box-shadow: var(--shadow-md);
      opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-7a9966b9) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-7a9966b9) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-38050d6e) #header-container{min-height: 68px;}
:where(html.edb-38050d6e) #footer-container{min-height: 220px;}
:where(html.edb-38050d6e) .ed-header ul:not(.dropdown-menu), :where(html.edb-38050d6e) .footer ul, :where(html.edb-38050d6e) .footer ol{list-style: none;
      margin: 0;
      padding-left: 0;}
:where(html.edb-38050d6e) .ed-header li, :where(html.edb-38050d6e) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-38050d6e) .ed-header a, :where(html.edb-38050d6e) .footer a{text-decoration: none;}
:where(html.edb-38050d6e) .ed-header p, :where(html.edb-38050d6e) .footer p{max-width: none;}
:where(html.edb-38050d6e) .chapter-grid{display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 0.75rem;
      margin: 1.25rem 0 0.5rem;}
:where(html.edb-38050d6e) .chapter-item{position: relative; display: flex;}
:where(html.edb-38050d6e) .chapter-link{display: flex; align-items: center; gap: 0.85rem; flex: 1 1 auto;
      background: #fff; border: 1px solid var(--border);
      border-radius: var(--radius); padding: 0.75rem 2.5rem 0.75rem 0.9rem;
      text-decoration: none; box-shadow: var(--shadow-sm);
      transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;}
:where(html.edb-38050d6e) .chapter-link:hover, :where(html.edb-38050d6e) .chapter-link:focus-visible{border-color: var(--navy-mid); box-shadow: var(--shadow-md);
      transform: translateY(-2px); outline: none;}
:where(html.edb-38050d6e) .chapter-link:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-38050d6e) .chapter-num{flex-shrink: 0; width: 34px; height: 34px; border-radius: 8px;
      background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
      color: var(--gold-light); font-family: var(--ff-mono);
      font-size: 0.8rem; font-weight: 500;
      display: flex; align-items: center; justify-content: center;}
:where(html.edb-38050d6e) .chapter-title{font-family: var(--ff-body); font-size: 0.9rem; font-weight: 600; color: var(--navy); line-height: 1.35;}
:where(html.edb-38050d6e) .part-eyebrow{font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel);}
:where(html.edb-38050d6e) .stat-row{display: flex; flex-wrap: wrap; gap: 2.5rem; margin-top: 1.75rem;}
:where(html.edb-38050d6e) .stat-row .stat{display: flex; flex-direction: column;}
:where(html.edb-38050d6e) .stat-row .stat .n{font-family: var(--ff-display); font-size: 2rem; font-weight: 700; color: var(--gold-light); line-height: 1;}
:where(html.edb-38050d6e) .stat-row .stat .l{font-family: var(--ff-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: #8faec8; margin-top: 0.35rem;}
:where(html.edb-38050d6e) .chip-row{display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.9rem;}
:where(html.edb-38050d6e) .module-line{margin-top: 1.6rem;}
:where(html.edb-38050d6e) .ch-mark{position: absolute; top: 50%; right: 0.55rem; transform: translateY(-50%);
      width: 22px; height: 22px; padding: 0; border-radius: 50%;
      border: 1.5px solid var(--border); background: #fff;
      color: transparent; font-size: 0.6rem; line-height: 1;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; transition: background 0.2s, border-color 0.2s, color 0.2s;}
:where(html.edb-38050d6e) .ch-mark:hover{border-color: var(--navy-mid); color: var(--steel);}
:where(html.edb-38050d6e) .ch-mark:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-38050d6e) .ch-mark[aria-pressed="true"]{background: var(--navy); border-color: var(--navy); color: var(--gold-light);}
:where(html.edb-38050d6e) .chapter-item.is-done .chapter-num{opacity: 0.5;}
:where(html.edb-38050d6e) .chapter-item.is-done .chapter-title{color: var(--steel);}
:where(html.edb-38050d6e) .toc-box + .toc-box{margin-top: 1rem;}
:where(html.edb-38050d6e) .prog-line{font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.08em;
      text-transform: uppercase; color: var(--steel); margin: 0 0 0.5rem;}
:where(html.edb-38050d6e) .prog-line b{color: var(--navy); font-weight: 700;}
:where(html.edb-38050d6e) .prog-track{height: 6px; border-radius: 3px; background: var(--border); overflow: hidden;}
:where(html.edb-38050d6e) .prog-fill{height: 100%; width: 0%; border-radius: 3px;
      background: linear-gradient(90deg, var(--navy) 0%, var(--navy-light) 100%);
      transition: width 0.3s ease;}
:where(html.edb-38050d6e) .prog-reset{margin-top: 0.7rem; padding: 0; border: none; background: none;
      font-family: var(--ff-mono); font-size: 0.68rem; letter-spacing: 0.06em;
      text-transform: uppercase; color: var(--steel);
      cursor: pointer; text-decoration: underline;}
:where(html.edb-38050d6e) .prog-reset:hover{color: var(--navy);}
:where(html.edb-38050d6e) .toc-filter{width: 100%; padding: 0.5rem 0.65rem;
      border: 1px solid var(--border); border-radius: var(--radius);
      font-family: var(--ff-body); font-size: 0.82rem; color: var(--navy);
      background: #fff;}
:where(html.edb-38050d6e) .toc-filter:focus-visible{outline: 2px solid var(--gold); outline-offset: 1px; border-color: var(--navy-mid);}
:where(html.edb-38050d6e) .filter-meta{font-family: var(--ff-mono); font-size: 0.68rem; letter-spacing: 0.06em;
      text-transform: uppercase; color: var(--steel); margin: 0.5rem 0 0;}
:where(html.edb-38050d6e) .is-hidden{display: none !important;}
:where(html.edb-38050d6e) .filter-empty{display: none; font-family: var(--ff-body); font-size: 0.9rem;
      color: var(--steel); padding: 1.25rem 0;}
:where(html.edb-38050d6e) .filter-empty.show{display: block;}
:where(html.edb-38050d6e) .section-heading[id]{scroll-margin-top: 80px;}
:where(html.edb-38050d6e) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90;
      width: 44px; height: 44px; border: none; border-radius: 50%;
      background: var(--navy-mid); color: var(--gold-light); cursor: pointer;
      font-size: 1.1rem; box-shadow: var(--shadow-md);
      opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-38050d6e) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-38050d6e) .back-top:hover{transform: translateY(-2px);}
@media (prefers-reduced-motion: reduce){
  :where(html.edb-38050d6e) .chapter-link, :where(html.edb-38050d6e) .prog-fill, :where(html.edb-38050d6e) .back-top, :where(html.edb-38050d6e) .ch-mark{transition: none;}
  :where(html.edb-38050d6e) .chapter-link:hover{transform: none;}
}
:where(html.edb-936b679f) .crawl-index{max-width:1100px;margin:2.5rem auto 3rem;padding:0 1rem;font-size:.95rem;line-height:1.7}
:where(html.edb-936b679f) .crawl-index h2{font-size:1.35rem;margin:0 0 .35rem}
:where(html.edb-936b679f) .crawl-index p.ci-note{margin:0 0 1.2rem;opacity:.75;font-size:.88rem}
:where(html.edb-936b679f) .crawl-index h3{font-size:1rem;margin:1.4rem 0 .4rem}
:where(html.edb-936b679f) .crawl-index ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.35rem .9rem}
:where(html.edb-936b679f) .crawl-index li{margin:0}
:where(html.edb-936b679f) .crawl-index a{text-decoration:none}
:where(html.edb-936b679f) .crawl-index a:hover{text-decoration:underline}
:where(html.edb-a4453d63) #header-container{min-height: 68px;}
:where(html.edb-a4453d63) #footer-container{min-height: 220px;}
:where(html.edb-a4453d63) .ed-header ul:not(.dropdown-menu), :where(html.edb-a4453d63) .footer ul, :where(html.edb-a4453d63) .footer ol{list-style: none;
      margin: 0;
      padding-left: 0;}
:where(html.edb-a4453d63) .ed-header li, :where(html.edb-a4453d63) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-a4453d63) .ed-header a, :where(html.edb-a4453d63) .footer a{text-decoration: none;}
:where(html.edb-a4453d63) .ed-header p, :where(html.edb-a4453d63) .footer p{max-width: none;}
:where(html.edb-a4453d63) .chapter-grid{display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 0.75rem;
      margin: 1.25rem 0 0.5rem;}
:where(html.edb-a4453d63) .chapter-link{display: flex; align-items: center; gap: 0.85rem;
      background: #fff; border: 1px solid var(--border);
      border-radius: var(--radius); padding: 0.75rem 0.9rem;
      text-decoration: none; box-shadow: var(--shadow-sm);
      transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;}
:where(html.edb-a4453d63) .chapter-link:hover, :where(html.edb-a4453d63) .chapter-link:focus-visible{border-color: var(--navy-mid); box-shadow: var(--shadow-md);
      transform: translateY(-2px); outline: none;}
:where(html.edb-a4453d63) .chapter-link:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-a4453d63) .chapter-num{flex-shrink: 0; width: 34px; height: 34px; border-radius: 8px;
      background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
      color: var(--gold-light); font-family: var(--ff-mono);
      font-size: 0.8rem; font-weight: 500;
      display: flex; align-items: center; justify-content: center;}
:where(html.edb-a4453d63) .chapter-title{font-family: var(--ff-body); font-size: 0.9rem; font-weight: 600; color: var(--navy); line-height: 1.35;}
:where(html.edb-a4453d63) .part-eyebrow{font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel);}
:where(html.edb-a4453d63) .stat-row{display: flex; flex-wrap: wrap; gap: 2.5rem; margin-top: 1.75rem;}
:where(html.edb-a4453d63) .stat-row .stat{display: flex; flex-direction: column;}
:where(html.edb-a4453d63) .stat-row .stat .n{font-family: var(--ff-display); font-size: 2rem; font-weight: 700; color: var(--gold-light); line-height: 1;}
:where(html.edb-a4453d63) .stat-row .stat .l{font-family: var(--ff-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: #8faec8; margin-top: 0.35rem;}
:where(html.edb-a4453d63) .chip-row{display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.9rem;}
:where(html.edb-a4453d63) .module-line{margin-top: 1.6rem;}
:where(html.edb-a4453d63) .section-heading[id]{scroll-margin-top: 80px;}
:where(html.edb-a4453d63) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90;
      width: 44px; height: 44px; border: none; border-radius: 50%;
      background: var(--navy-mid); color: var(--gold-light); cursor: pointer;
      font-size: 1.1rem; box-shadow: var(--shadow-md);
      opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-a4453d63) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-a4453d63) .back-top:hover{transform: translateY(-2px);}
:root:where(.edb-4bcd4009){--navy:        #0d1b2a;
  --navy-mid:    #1a3a5c;
  --navy-light:  #264d73;
  --steel:       #4a7fa5;
  --sky:         #7fb8d4;
  --cream:       #f5f0e8;
  --warm-white:  #faf8f4;
  --gold:        #c9a84c;
  --gold-light:  #e8d08a;
  --red:         #c0392b;
  --green:       #1a6b3c;
  --text-dark:   #1a1a2e;
  --text-mid:    #334155;
  --text-light:  #64748b;
  --border:      #d4cfc6;

  
  --text-light-aa: #56637a;
  --steel-aa:      #37627f;

  
  --c-intuition:  #37627f;
  --c-intuition-bg:#eef4f9;
  --c-warn:       #b3402f;
  --c-warn-bg:    #fdf2ef;
  --c-why:        #8a6410;
  --c-why-bg:     #fbf6e9;
  --c-app:        #1a6b3c;
  --c-app-bg:     #eef7f1;
  --c-think:      #1c5f6b;
  --c-think-bg:   #eaf4f5;

  --shadow-sm:   0 2px 8px rgba(13,27,42,0.08);
  --shadow-md:   0 8px 32px rgba(13,27,42,0.12);
  --shadow-lg:   0 20px 60px rgba(13,27,42,0.18);
  --radius:      6px;
  --radius-lg:   12px;
  --ff-display:  "Playfair Display", Georgia, serif;
  --ff-body:     "Source Serif 4", Georgia, serif;
  --ff-mono:     "JetBrains Mono", "Courier New", monospace;}
:where(html.edb-4bcd4009), :where(html.edb-4bcd4009) *, :where(html.edb-4bcd4009)::before, :where(html.edb-4bcd4009) *::before, :where(html.edb-4bcd4009)::after, :where(html.edb-4bcd4009) *::after{box-sizing: border-box; margin: 0; padding: 0;}
html:where(.edb-4bcd4009){scroll-behavior: smooth; font-size: 16px;}
:where(html.edb-4bcd4009) body{font-family: var(--ff-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--warm-white);
  -webkit-font-smoothing: antialiased;}
:where(html.edb-4bcd4009) :target{scroll-margin-top: 5rem;}
:where(html.edb-4bcd4009) [id]{scroll-margin-top: 5rem;}
:where(html.edb-4bcd4009) :focus-visible{outline: 2px solid var(--gold); outline-offset: 2px; border-radius: 2px;}
:where(html.edb-4bcd4009) .skip-link{position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1200;
  padding: 0.6rem 1.1rem;
  background: var(--navy);
  color: var(--gold-light);
  font-family: var(--ff-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 0 0 var(--radius) 0;}
:where(html.edb-4bcd4009) .skip-link:focus, :where(html.edb-4bcd4009) .skip-link:focus-visible{left: 0;
  outline: 2px solid var(--gold);
  outline-offset: -2px;}
:where(html.edb-4bcd4009) .sr-only{position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;}
:where(html.edb-4bcd4009) .read-progress{position: fixed;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: transparent;
  z-index: 1100;
  pointer-events: none;}
:where(html.edb-4bcd4009) .read-progress span{display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold-light) 100%);
  transition: width 0.12s linear;}
:where(html.edb-4bcd4009) .back-top{position: fixed;
  right: 1.25rem; bottom: 1.25rem;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--navy-mid);
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s, border-color 0.2s;
  z-index: 900;}
:where(html.edb-4bcd4009) .back-top.is-visible{opacity: 1; visibility: visible; transform: translateY(0);}
:where(html.edb-4bcd4009) .back-top:hover{border-color: var(--navy-mid); color: var(--navy);}
:where(html.edb-4bcd4009) .site-nav{position: sticky; top: 0; z-index: 1000;
  background: rgba(13,27,42,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);}
:where(html.edb-4bcd4009) .nav-inner{max-width: 1200px; margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;}
:where(html.edb-4bcd4009) .nav-brand{font-family: var(--ff-mono); font-size: 0.9rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--gold-light); text-decoration: none;}
:where(html.edb-4bcd4009) .nav-links{display: flex; gap: 1.25rem; list-style: none;}
:where(html.edb-4bcd4009) .nav-links a{font-family: var(--ff-mono); font-size: 0.75rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: #b8c9da; text-decoration: none;
  padding-bottom: 2px; border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;}
:where(html.edb-4bcd4009) .nav-links a:hover{color: #fff; border-color: var(--gold);}
:where(html.edb-4bcd4009) .nav-links a.active{color: var(--gold-light); border-color: var(--gold);}
:where(html.edb-4bcd4009) .page-hero{position: relative;
  padding: 3.5rem 1.5rem 3rem;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #fff;
  overflow: hidden;}
:where(html.edb-4bcd4009) .page-hero::before{content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(0deg,  rgba(255,255,255,0.035) 0 1px, transparent 1px 46px);
  pointer-events: none;}
:where(html.edb-4bcd4009) .hero-inner{position: relative; max-width: 1200px; margin: 0 auto;}
:where(html.edb-4bcd4009) .hero-tag{display: inline-block;
  font-family: var(--ff-mono); font-size: 0.68rem;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--gold-light);
  border: 1px solid rgba(232,208,138,0.45);
  border-radius: 999px;
  padding: 0.22rem 0.8rem;
  margin-bottom: 1rem;}
:where(html.edb-4bcd4009) .hero-title{font-family: var(--ff-display);
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 700; line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 0.9rem;}
:where(html.edb-4bcd4009) .hero-subtitle{font-size: 1.02rem; line-height: 1.65;
  color: #cfe0ef; max-width: 65ch;
  font-weight: 300;}
:where(html.edb-4bcd4009) .hero-meta{display: flex; flex-wrap: wrap; gap: 1.5rem;
  margin-top: 1.6rem;
  font-family: var(--ff-mono); font-size: 0.72rem;
  letter-spacing: 0.06em; color: #93b3cc;}
:where(html.edb-4bcd4009) .hero-meta span{display: inline-flex; align-items: center;}
:where(html.edb-4bcd4009) .hero-meta span::before{content: "▪"; color: var(--gold); margin-right: 0.45rem; font-size: 0.6rem;}
:where(html.edb-4bcd4009) .breadcrumb{background: var(--cream);
  border-bottom: 1px solid var(--border);}
:where(html.edb-4bcd4009) .breadcrumb-inner{max-width: 1200px; margin: 0 auto;
  padding: 0.6rem 1.5rem;
  font-family: var(--ff-mono); font-size: 0.72rem;
  color: var(--text-light-aa);}
:where(html.edb-4bcd4009) .breadcrumb-inner a{color: var(--navy-mid); text-decoration: none;}
:where(html.edb-4bcd4009) .breadcrumb-inner a:hover{text-decoration: underline;}
:where(html.edb-4bcd4009) .breadcrumb-inner span{color: var(--text-light); margin: 0 0.4rem;}
:where(html.edb-4bcd4009) .page-layout{max-width: 1200px; margin: 0 auto;
  padding: 2.25rem 1.5rem 3rem;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;}
:where(html.edb-4bcd4009) .toc-sidebar{position: sticky; top: 1.5rem;}
:where(html.edb-4bcd4009) .toc-box{background: #fff;
  border: 1px solid var(--border);
  border-top: 3px solid var(--navy-mid);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 1.1rem 1rem;
  box-shadow: var(--shadow-sm);}
:where(html.edb-4bcd4009) .toc-box h2, :where(html.edb-4bcd4009) .toc-box h3{font-family: var(--ff-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-light-aa);
  padding-bottom: 0.6rem;
  margin-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);}
:where(html.edb-4bcd4009) .toc-box ol{list-style: none; counter-reset: toc; padding: 0;}
:where(html.edb-4bcd4009) .toc-box li{counter-increment: toc; margin-bottom: 0.1rem;}
:where(html.edb-4bcd4009) .toc-box a{display: flex; gap: 0.55rem; align-items: baseline;
  font-size: 0.84rem; line-height: 1.4;
  color: var(--text-mid); text-decoration: none;
  padding: 0.32rem 0.4rem;
  border-radius: var(--radius);
  border-left: 2px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;}
:where(html.edb-4bcd4009) .toc-box a::before{content: counter(toc, decimal-leading-zero);
  font-family: var(--ff-mono);
  font-size: 0.66rem;
  color: var(--steel-aa);
  flex-shrink: 0;}
:where(html.edb-4bcd4009) .toc-box a:hover, :where(html.edb-4bcd4009) .toc-box a:focus-visible{background: var(--cream);
  color: var(--navy);
  border-left-color: var(--gold);}
:where(html.edb-4bcd4009) .toc-box a.is-active{background: var(--cream);
  color: var(--navy);
  border-left-color: var(--navy-mid);
  font-weight: 600;}
:where(html.edb-4bcd4009) .lecture-content{min-width: 0; overflow-wrap: break-word;}
:where(html.edb-4bcd4009) .lecture-content h1{font-family: var(--ff-display);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin: 0 0 1rem;}
:where(html.edb-4bcd4009) .lecture-content h3{font-family: var(--ff-display);
  font-size: 1.22rem;
  font-weight: 600;
  color: var(--navy-mid);
  line-height: 1.3;
  margin: 2rem 0 0.7rem;}
:where(html.edb-4bcd4009) .lecture-content h4{font-family: var(--ff-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light-aa);
  margin: 1.5rem 0 0.5rem;}
:where(html.edb-4bcd4009) .lecture-content ul, :where(html.edb-4bcd4009) .lecture-content ol{padding-left: 1.4rem; margin: 0.75rem 0;}
:where(html.edb-4bcd4009) .lecture-content li{margin-bottom: 0.4rem; line-height: 1.65;}
:where(html.edb-4bcd4009) .lecture-content li > ul, :where(html.edb-4bcd4009) .lecture-content li > ol{margin: 0.35rem 0 0.2rem;}
:where(html.edb-4bcd4009) .lecture-content ul{list-style: disc;}
:where(html.edb-4bcd4009) .lecture-content ul ul{list-style: circle;}
:where(html.edb-4bcd4009) .lecture-content ol{list-style: decimal;}
:where(html.edb-4bcd4009) .lecture-content li::marker{color: var(--steel-aa);}
:where(html.edb-4bcd4009) .lecture-content p{margin-bottom: 1rem;}
:where(html.edb-4bcd4009) .lecture-content p:last-child{margin-bottom: 0;}
:where(html.edb-4bcd4009) .lecture-content a{color: var(--navy-mid); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px;}
:where(html.edb-4bcd4009) .lecture-content a:hover{color: var(--navy); text-decoration-color: var(--gold);}
:where(html.edb-4bcd4009) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-4bcd4009) .lecture-content figure{max-width: 100%;}
:where(html.edb-4bcd4009) .lecture-content code, :where(html.edb-4bcd4009) .lecture-content kbd{font-family: var(--ff-mono);
  font-size: 0.85em;
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.32em;}
:where(html.edb-4bcd4009) .lecture-content hr{border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;}
:where(html.edb-4bcd4009) .lecture-content blockquote{margin: 1.25rem 0;
  padding: 0.5rem 0 0.5rem 1.1rem;
  border-left: 3px solid var(--gold);
  color: var(--text-mid);
  font-style: italic;}
:where(html.edb-4bcd4009) .section-heading{margin: 3rem 0 1.1rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--border);}
:where(html.edb-4bcd4009) .section-heading:first-child{margin-top: 0; border-top: none; padding-top: 0;}
:where(html.edb-4bcd4009) .section-number{display: inline-block;
  font-family: var(--ff-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-aa);
  margin-bottom: 0.4rem;}
:where(html.edb-4bcd4009) .section-heading h2{font-family: var(--ff-display);
  font-size: clamp(1.45rem, 2.6vw, 1.8rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.22;
  letter-spacing: -0.005em;}
:where(html.edb-4bcd4009) .prose{margin: 0.75rem 0 1.1rem;}
:where(html.edb-4bcd4009) .prose p{margin-bottom: 1rem; font-size: 0.97rem; color: var(--text-mid); line-height: 1.75;}
:where(html.edb-4bcd4009) .prose p:last-child{margin-bottom: 0;}
:where(html.edb-4bcd4009) .prose ul, :where(html.edb-4bcd4009) .prose ol{color: var(--text-mid); font-size: 0.97rem;}
:where(html.edb-4bcd4009) .chapter-brief{display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  overflow: hidden;
  margin-bottom: 1.75rem;}
:where(html.edb-4bcd4009) .brief-item{background: var(--warm-white); padding: 0.85rem 1rem;}
:where(html.edb-4bcd4009) .bi-label{font-family: var(--ff-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light-aa);
  margin-bottom: 0.3rem;}
:where(html.edb-4bcd4009) .bi-value{font-size: 0.86rem; line-height: 1.55; color: var(--text-mid);}
:where(html.edb-4bcd4009) .bi-value a{color: var(--navy-mid);}
:where(html.edb-4bcd4009) .card-grid{display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
  margin: 1.25rem 0;}
:where(html.edb-4bcd4009) .card-grid > *{min-width: 0;}
:where(html.edb-4bcd4009) .card{background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow-sm);}
:where(html.edb-4bcd4009) .card-title{display: flex; align-items: center; gap: 0.55rem;
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-mid);
  padding-bottom: 0.55rem;
  margin-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);}
:where(html.edb-4bcd4009) .card-title .icon{width: 20px; height: 20px; border-radius: 50%;
  background: var(--navy-mid); color: #fff;
  font-size: 0.62rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;}
:where(html.edb-4bcd4009) .card ul{padding-left: 1.1rem; font-size: 0.9rem; color: var(--text-mid);}
:where(html.edb-4bcd4009) .card ul li{margin-bottom: 0.34rem;}
:where(html.edb-4bcd4009) .card p{font-size: 0.9rem; color: var(--text-mid);}
:where(html.edb-4bcd4009) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-4bcd4009) .card > .card-grid{margin-top: 0.75rem;}
:where(html.edb-4bcd4009) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-4bcd4009) .card .table-scroll, :where(html.edb-4bcd4009) .card .data-table-wrap{margin-top: 0.75rem;}
:where(html.edb-4bcd4009) .card-alert{background: #fff8f0; border-color: #e8c9a0;}
:where(html.edb-4bcd4009) .card-alert .card-title{color: #8b3a00; border-color: #e07020;}
:where(html.edb-4bcd4009) .card-alert .card-title .icon{background: #b3502a;}
:where(html.edb-4bcd4009) .card-example{background: #f2f9f4; border-color: #b7ddc6;}
:where(html.edb-4bcd4009) .card-example .card-title{color: var(--green); border-color: var(--green);}
:where(html.edb-4bcd4009) .card-example .card-title .icon{background: var(--green);}
:where(html.edb-4bcd4009) .card-navy{background: linear-gradient(150deg, var(--navy) 0%, var(--navy-light) 100%);
  border-color: var(--navy-light);}
:where(html.edb-4bcd4009) .card-navy .card-title{color: var(--gold-light); border-color: rgba(232,208,138,0.35);}
:where(html.edb-4bcd4009) .card-navy .card-title .icon{background: var(--gold); color: var(--navy);}
:where(html.edb-4bcd4009) .card-navy p, :where(html.edb-4bcd4009) .card-navy ul, :where(html.edb-4bcd4009) .card-navy li{color: #cfe0ef;}
:where(html.edb-4bcd4009) .card-navy strong{color: #fff;}
:where(html.edb-4bcd4009) .card-navy em{color: var(--gold-light);}
:where(html.edb-4bcd4009) .card-navy a{color: var(--gold-light);}
:where(html.edb-4bcd4009) .eq-block{background: var(--cream);
  border: 1px solid var(--border);
  border-left: 3px solid var(--navy-mid);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 1rem 1.15rem;
  margin: 1.25rem 0;
  max-width: 100%;
  overflow-x: auto;}
:where(html.edb-4bcd4009) .eq-block .eq-label{font-family: var(--ff-mono);
  font-size: 0.63rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-light-aa);
  margin-bottom: 0.45rem;}
:where(html.edb-4bcd4009) .eq-block .math{font-size: 1rem;
  color: var(--navy);
  text-align: center;
  max-width: 100%;
  overflow-x: auto;}
:where(html.edb-4bcd4009) .eq-block .math sub, :where(html.edb-4bcd4009) .eq-block .math sup{font-size: 0.72em;}
:where(html.edb-4bcd4009) .eq-inline{font-family: var(--ff-mono);
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.35em;
  font-size: 0.9em;
  color: var(--navy-mid);}
:where(html.edb-4bcd4009) .eq-desc{font-size: 0.8rem;
  color: var(--text-light-aa);
  text-align: center;
  margin-top: 0.45rem;
  font-style: italic;}
:where(html.edb-4bcd4009) mjx-container[display="true"]{overflow-x: auto; overflow-y: hidden; max-width: 100%;}
:where(html.edb-4bcd4009) .lec-table mjx-container, :where(html.edb-4bcd4009) .data-table mjx-container{max-width: 100%;}
:where(html.edb-4bcd4009) .key-result{display: flex; gap: 1rem; align-items: flex-start;
  background: linear-gradient(150deg, var(--navy) 0%, #14314f 100%);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.35rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
  color: #dce8f3;}
:where(html.edb-4bcd4009) .key-result .kr-icon{font-size: 1.35rem; line-height: 1.2; flex-shrink: 0;}
:where(html.edb-4bcd4009) .key-result .kr-body{min-width: 0; flex: 1 1 auto;}
:where(html.edb-4bcd4009) .key-result .kr-label{font-family: var(--ff-mono);
  font-size: 0.63rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 0.5rem;}
:where(html.edb-4bcd4009) .key-result .kr-title{font-size: 1rem;
  color: #fff;
  margin-bottom: 0.6rem;
  overflow-x: auto;}
:where(html.edb-4bcd4009) .key-result .kr-body p{font-size: 0.9rem; line-height: 1.7; color: #b9d0e4;}
:where(html.edb-4bcd4009) .key-result .kr-body li{color: #c0d4e8; font-size: 0.9rem;}
:where(html.edb-4bcd4009) .key-result strong{color: #ffffff;}
:where(html.edb-4bcd4009) .key-result em{color: var(--gold-light);}
:where(html.edb-4bcd4009) .key-result .highlight{color: #ffd97a;}
:where(html.edb-4bcd4009) .key-result .hl-gold{color: #f5c451;}
:where(html.edb-4bcd4009) .key-result a{color: var(--gold-light);}
:where(html.edb-4bcd4009) .key-result mjx-container{color: #fff;}
:where(html.edb-4bcd4009) .callout{margin: 1.4rem 0;
  border: 1px solid var(--border);
  border-left: 3px solid var(--steel);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background: #fff;
  overflow: hidden;}
:where(html.edb-4bcd4009) .co-head{display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-mid);
  padding: 0.6rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: var(--cream);}
:where(html.edb-4bcd4009) .co-ico{width: 19px; height: 19px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 0.66rem; line-height: 1;
  background: var(--steel); color: #fff;}
:where(html.edb-4bcd4009) .co-body{padding: 0.95rem 1.15rem;}
:where(html.edb-4bcd4009) .co-body > p{font-size: 0.94rem; color: var(--text-mid); line-height: 1.72; margin-bottom: 0.8rem;}
:where(html.edb-4bcd4009) .co-body > p:last-child{margin-bottom: 0;}
:where(html.edb-4bcd4009) .co-body ul, :where(html.edb-4bcd4009) .co-body ol{font-size: 0.94rem; color: var(--text-mid); padding-left: 1.35rem; margin: 0.6rem 0;}
:where(html.edb-4bcd4009) .co-body li{margin-bottom: 0.4rem;}
:where(html.edb-4bcd4009) .co-claim{font-style: italic;
  color: var(--navy-mid) !important;
  background: var(--cream);
  border-left: 2px solid var(--border);
  padding: 0.55rem 0.85rem;
  border-radius: 0 var(--radius) var(--radius) 0;}
:where(html.edb-4bcd4009) .callout--intuition{border-left-color: var(--c-intuition);}
:where(html.edb-4bcd4009) .callout--intuition .co-head{background: var(--c-intuition-bg); color: var(--c-intuition); border-bottom-color: #cfe0ec;}
:where(html.edb-4bcd4009) .callout--intuition .co-ico{background: var(--c-intuition);}
:where(html.edb-4bcd4009) .callout--warn{border-left-color: var(--c-warn);}
:where(html.edb-4bcd4009) .callout--warn .co-head{background: var(--c-warn-bg); color: var(--c-warn); border-bottom-color: #f0d0c8;}
:where(html.edb-4bcd4009) .callout--warn .co-ico{background: var(--c-warn); font-weight: 700;}
:where(html.edb-4bcd4009) .callout--why{border-left-color: var(--c-why);}
:where(html.edb-4bcd4009) .callout--why .co-head{background: var(--c-why-bg); color: var(--c-why); border-bottom-color: #e6d9ae;}
:where(html.edb-4bcd4009) .callout--why .co-ico{background: var(--c-why);}
:where(html.edb-4bcd4009) .callout--app{border-left-color: var(--c-app);}
:where(html.edb-4bcd4009) .callout--app .co-head{background: var(--c-app-bg); color: var(--c-app); border-bottom-color: #c2ddcc;}
:where(html.edb-4bcd4009) .callout--app .co-ico{background: var(--c-app);}
:where(html.edb-4bcd4009) .callout--think{border-left-color: var(--c-think);}
:where(html.edb-4bcd4009) .callout--think .co-head{background: var(--c-think-bg); color: var(--c-think); border-bottom-color: #c5dfe2;}
:where(html.edb-4bcd4009) .callout--think .co-ico{background: var(--c-think);}
:where(html.edb-4bcd4009) .mis-pair{display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 0.9rem 0;}
:where(html.edb-4bcd4009) .mis-wrong, :where(html.edb-4bcd4009) .mis-right{border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-mid);}
:where(html.edb-4bcd4009) .mis-wrong{background: #fdf2ef; border-color: #f0d0c8;}
:where(html.edb-4bcd4009) .mis-right{background: #eef7f1; border-color: #c2ddcc;}
:where(html.edb-4bcd4009) .mis-wrong .lbl, :where(html.edb-4bcd4009) .mis-right .lbl{display: block;
  font-family: var(--ff-mono);
  font-size: 0.6rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
  font-weight: 500;}
:where(html.edb-4bcd4009) .mis-wrong .lbl{color: var(--c-warn);}
:where(html.edb-4bcd4009) .mis-right .lbl{color: var(--c-app);}
:where(html.edb-4bcd4009) .hint{margin-top: 0.85rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--warm-white);}
:where(html.edb-4bcd4009) .hint > summary{cursor: pointer;
  list-style: none;
  padding: 0.5rem 0.9rem;
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-aa);}
:where(html.edb-4bcd4009) .hint > summary::-webkit-details-marker{display: none;}
:where(html.edb-4bcd4009) .hint > summary::before{content: "▸ "; display: inline-block; transition: transform 0.15s;}
:where(html.edb-4bcd4009) .hint[open] > summary::before{content: "▾ ";}
:where(html.edb-4bcd4009) .hint[open] > summary{border-bottom: 1px dashed var(--border);}
:where(html.edb-4bcd4009) .hint-body{padding: 0.8rem 0.95rem; font-size: 0.92rem; color: var(--text-mid);}
:where(html.edb-4bcd4009) .hint-body p{margin-bottom: 0.7rem;}
:where(html.edb-4bcd4009) .hint-body p:last-child{margin-bottom: 0;}
:where(html.edb-4bcd4009) .table-scroll, :where(html.edb-4bcd4009) .data-table-wrap{overflow-x: auto;
  margin: 1.3rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;}
:where(html.edb-4bcd4009) .lec-table, :where(html.edb-4bcd4009) .data-table{width: 100%;
  border-collapse: collapse;
  font-family: var(--ff-body);
  font-size: 0.89rem;
  line-height: 1.6;}
:where(html.edb-4bcd4009) .lec-table caption, :where(html.edb-4bcd4009) .data-table caption{caption-side: top;
  text-align: left;
  font-family: var(--ff-mono);
  font-size: 0.64rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-light-aa);
  padding: 0.75rem 1rem 0.55rem;
  background: var(--warm-white);
  border-bottom: 1px solid var(--border);}
:where(html.edb-4bcd4009) .lec-table thead tr, :where(html.edb-4bcd4009) .data-table thead tr, :where(html.edb-4bcd4009) .data-table tr.header{background: var(--navy);}
:where(html.edb-4bcd4009) .lec-table thead th, :where(html.edb-4bcd4009) .lec-table thead td, :where(html.edb-4bcd4009) .data-table thead th, :where(html.edb-4bcd4009) .data-table thead td, :where(html.edb-4bcd4009) .data-table tr.header th, :where(html.edb-4bcd4009) .data-table tr.header td{background: var(--navy);
  color: #ffffff;
  padding: 0.7rem 1rem;
  text-align: left;
  vertical-align: bottom;
  font-family: var(--ff-mono);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--gold);
  white-space: nowrap;}
:where(html.edb-4bcd4009) .lec-table thead .highlight, :where(html.edb-4bcd4009) .data-table thead .highlight, :where(html.edb-4bcd4009) .data-table thead strong.highlight{color: var(--gold-light); font-weight: 600;}
:where(html.edb-4bcd4009) .lec-table tbody tr, :where(html.edb-4bcd4009) .data-table tbody tr{border-bottom: 1px solid var(--border);}
:where(html.edb-4bcd4009) .lec-table tbody tr:last-child, :where(html.edb-4bcd4009) .data-table tbody tr:last-child{border-bottom: none;}
:where(html.edb-4bcd4009) .lec-table tbody tr:nth-child(even), :where(html.edb-4bcd4009) .data-table tbody tr:nth-child(even){background: var(--warm-white);}
:where(html.edb-4bcd4009) .lec-table tbody tr:hover, :where(html.edb-4bcd4009) .data-table tbody tr:hover{background: rgba(74,127,165,0.09);}
:where(html.edb-4bcd4009) .lec-table td, :where(html.edb-4bcd4009) .lec-table tbody th, :where(html.edb-4bcd4009) .data-table td, :where(html.edb-4bcd4009) .data-table tbody th{padding: 0.68rem 1rem;
  color: var(--text-mid);
  vertical-align: top;
  text-align: left;}
:where(html.edb-4bcd4009) .lec-table tbody th[scope="row"], :where(html.edb-4bcd4009) .data-table tbody th[scope="row"]{font-weight: 600; color: var(--text-dark);}
:where(html.edb-4bcd4009) .lec-table td:first-child, :where(html.edb-4bcd4009) .data-table td:first-child{color: var(--text-dark);}
:where(html.edb-4bcd4009) .lec-table td strong, :where(html.edb-4bcd4009) .data-table td strong{color: var(--navy-mid); font-weight: 600;}
:where(html.edb-4bcd4009) .num-cell{font-family: var(--ff-mono);
  font-size: 0.84rem;
  font-variant-numeric: tabular-nums;
  color: var(--navy-mid) !important;
  white-space: nowrap;}
:where(html.edb-4bcd4009) .num{font-family: var(--ff-mono); color: var(--navy-mid); font-weight: 600; font-variant-numeric: tabular-nums;}
:where(html.edb-4bcd4009) .chip{display: inline-flex; align-items: center;
  font-family: var(--ff-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--cream);
  color: var(--text-mid);
  white-space: nowrap;}
:where(html.edb-4bcd4009) .chip-gold{background: #fbf3dd; border-color: #e3cf90; color: #7d5a0c;}
:where(html.edb-4bcd4009) .chip-red{background: #fdf2ef; border-color: #f0d0c8; color: var(--c-warn);}
:where(html.edb-4bcd4009) .chip-green{background: #eef7f1; border-color: #c2ddcc; color: var(--green);}
:where(html.edb-4bcd4009) .insight-strip{background: var(--cream);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.85rem 1.1rem;
  margin: 1.3rem 0;
  font-size: 0.94rem;
  color: var(--text-mid);
  line-height: 1.7;}
:where(html.edb-4bcd4009) .insight-strip strong{color: var(--navy);}
:where(html.edb-4bcd4009) .sec-recap{background: var(--warm-white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--steel);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.8rem 1.1rem;
  margin: 1.5rem 0 2rem;
  font-size: 0.91rem;
  line-height: 1.7;
  color: var(--text-mid);}
:where(html.edb-4bcd4009) .sec-recap strong:first-child{display: inline-block;
  font-family: var(--ff-mono);
  font-size: 0.63rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--steel-aa);
  margin-right: 0.4rem;}
:where(html.edb-4bcd4009) .derive, :where(html.edb-4bcd4009) .step-list{list-style: none;
  counter-reset: dv;
  padding-left: 0;
  margin: 1.25rem 0;}
:where(html.edb-4bcd4009) .derive > li, :where(html.edb-4bcd4009) .step-list > li{counter-increment: dv;
  position: relative;
  padding-left: 2.6rem;
  margin-bottom: 0.95rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-mid);}
:where(html.edb-4bcd4009) .derive > li::before, :where(html.edb-4bcd4009) .step-list > li::before{content: counter(dv);
  position: absolute;
  left: 0; top: 0.15rem;
  width: 1.75rem; height: 1.75rem;
  border-radius: 50%;
  background: var(--navy-mid);
  color: #fff;
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  display: flex; align-items: center; justify-content: center;}
:where(html.edb-4bcd4009) .dv-what{display: block;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.15rem;}
:where(html.edb-4bcd4009) .key-result .step-list > li{color: #c0d4e8;}
:where(html.edb-4bcd4009) .key-result .step-list > li::before{background: #4d7fb3; color: #0d1b2a;}
:where(html.edb-4bcd4009) .lecture-list{counter-reset: ll;
  list-style: none;
  padding-left: 0;
  margin: 1.25rem 0;}
:where(html.edb-4bcd4009) .lecture-list > li{counter-increment: ll;
  position: relative;
  padding-left: 2.4rem;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-mid);}
:where(html.edb-4bcd4009) .lecture-list > li::before{content: counter(ll, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  color: var(--steel-aa);
  font-weight: 500;}
:where(html.edb-4bcd4009) .lecture-list li ol{margin-top: 0.3rem;}
:where(html.edb-4bcd4009) .qc-set{margin: 1.5rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);}
:where(html.edb-4bcd4009) .qc-head{display: flex; align-items: baseline; gap: 0.6rem;
  background: var(--navy);
  color: var(--gold-light);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.6rem 1.1rem;}
:where(html.edb-4bcd4009) .qc-sub{color: #8faec8; font-size: 0.64rem; letter-spacing: 0.1em;}
:where(html.edb-4bcd4009) .quick-check{border-top: 1px solid var(--border);}
:where(html.edb-4bcd4009) .qc-set > .quick-check:first-of-type{border-top: none;}
:where(html.edb-4bcd4009) .quick-check > summary{cursor: pointer;
  list-style: none;
  display: flex; gap: 0.7rem; align-items: flex-start;
  padding: 0.8rem 1.1rem;
  font-size: 0.93rem;
  line-height: 1.65;
  color: var(--text-dark);
  background: #fff;
  transition: background 0.15s;}
:where(html.edb-4bcd4009) .quick-check > summary::-webkit-details-marker{display: none;}
:where(html.edb-4bcd4009) .quick-check > summary::before{content: "?";
  flex-shrink: 0;
  width: 20px; height: 20px; margin-top: 0.15rem;
  border-radius: 50%;
  background: var(--cream);
  border: 1px solid var(--border);
  color: var(--steel-aa);
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  display: flex; align-items: center; justify-content: center;}
:where(html.edb-4bcd4009) .quick-check > summary:hover{background: var(--warm-white);}
:where(html.edb-4bcd4009) .quick-check[open] > summary{background: var(--cream);
  border-bottom: 1px solid var(--border);}
:where(html.edb-4bcd4009) .quick-check[open] > summary::before{content: "✓";
  background: var(--green);
  border-color: var(--green);
  color: #fff;}
:where(html.edb-4bcd4009) .qc-answer{padding: 0.95rem 1.15rem 1.05rem 2.8rem;
  background: var(--warm-white);
  border-left: 3px solid var(--green);}
:where(html.edb-4bcd4009) .qc-answer p{font-size: 0.92rem; color: var(--text-mid); line-height: 1.72; margin-bottom: 0.7rem;}
:where(html.edb-4bcd4009) .qc-answer p:last-child{margin-bottom: 0;}
:where(html.edb-4bcd4009) .qc-answer strong{color: var(--navy);}
:where(html.edb-4bcd4009) .formula-sheet{margin: 1.75rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);}
:where(html.edb-4bcd4009) .fs-head{background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--gold-light);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 0.65rem 1.15rem;}
:where(html.edb-4bcd4009) .fs-row{display: grid;
  grid-template-columns: minmax(180px, 0.9fr) minmax(0, 1.4fr);
  gap: 0.85rem;
  align-items: center;
  padding: 0.7rem 1.15rem;
  border-top: 1px solid var(--border);}
:where(html.edb-4bcd4009) .fs-row:nth-child(even){background: var(--warm-white);}
:where(html.edb-4bcd4009) .fs-name{font-size: 0.88rem;
  font-weight: 600;
  color: var(--navy-mid);
  line-height: 1.4;}
:where(html.edb-4bcd4009) .fs-when{display: block;
  font-family: var(--ff-mono);
  font-size: 0.63rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-light-aa);
  margin-top: 0.15rem;
  text-transform: none;}
:where(html.edb-4bcd4009) .fs-eq{font-size: 0.95rem;
  color: var(--navy);
  overflow-x: auto;
  padding: 0.15rem 0;}
:where(html.edb-4bcd4009) .term-list{display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0;}
:where(html.edb-4bcd4009) .term{background: #fff;
  border: 1px solid var(--border);
  border-top: 2px solid var(--gold);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 0.75rem 0.9rem;}
:where(html.edb-4bcd4009) .term dt{font-family: var(--ff-display);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.28rem;}
:where(html.edb-4bcd4009) .term dd{margin: 0;
  font-size: 0.88rem;
  line-height: 1.62;
  color: var(--text-mid);}
:where(html.edb-4bcd4009) .deft{font-weight: 600;
  color: var(--navy);
  border-bottom: 2px solid var(--gold);
  padding-bottom: 1px;}
:where(html.edb-4bcd4009) .lc{font-family: var(--ff-mono); font-style: normal;}
:where(html.edb-4bcd4009) .diagram-figure, :where(html.edb-4bcd4009) .fig-img{margin: 1.4rem 0;
  padding: 1.1rem 1rem 0.75rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-align: center;}
:where(html.edb-4bcd4009) .diagram-figure svg{max-width: 100%; height: auto; display: block; margin: 0 auto;}
:where(html.edb-4bcd4009) .diagram-figure figcaption, :where(html.edb-4bcd4009) .fig-caption, :where(html.edb-4bcd4009) .fig-img figcaption{margin-top: 0.6rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--border);
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--text-light-aa);
  line-height: 1.5;
  text-align: center;}
:where(html.edb-4bcd4009) .diagram-row{display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin: 1.4rem 0;
  align-items: start;}
:where(html.edb-4bcd4009) .diagram-row > .diagram-figure{margin: 0; height: 100%;}
:where(html.edb-4bcd4009) .fig-placeholder{background: var(--cream);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-light-aa);
  margin: 1.4rem 0;}
:where(html.edb-4bcd4009) .fig-placeholder .fig-icon{font-size: 2.5rem; display: block; margin-bottom: 0.5rem;}
:where(html.edb-4bcd4009) .explorer{margin: 1.75rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-md);}
:where(html.edb-4bcd4009) .ex-head{display: flex; align-items: center; gap: 0.6rem;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--gold-light);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 0.65rem 1.15rem;}
:where(html.edb-4bcd4009) .ex-body{padding: 1.1rem 1.15rem 1.2rem;}
:where(html.edb-4bcd4009) .ex-controls{display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem 1.4rem;
  padding-bottom: 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);}
:where(html.edb-4bcd4009) .ex-ctl{display: grid; grid-template-columns: 1fr auto; gap: 0.3rem 0.7rem; align-items: center;}
:where(html.edb-4bcd4009) .ex-ctl label{font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--text-light-aa);}
:where(html.edb-4bcd4009) .ex-ctl output{font-family: var(--ff-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--navy);
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.05rem 0.5rem;
  min-width: 4.5rem;
  text-align: right;
  font-variant-numeric: tabular-nums;}
:where(html.edb-4bcd4009) .ex-ctl input[type="range"]{grid-column: 1 / -1;
  width: 100%;
  -webkit-appearance: none; appearance: none;
  height: 4px;
  border-radius: 999px;
  background: var(--border);
  cursor: pointer;}
:where(html.edb-4bcd4009) .ex-ctl input[type="range"]::-webkit-slider-thumb{-webkit-appearance: none; appearance: none;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--navy-mid);
  border: 2px solid #fff;
  box-shadow: var(--shadow-sm);}
:where(html.edb-4bcd4009) .ex-ctl input[type="range"]::-moz-range-thumb{width: 16px; height: 16px; border-radius: 50%;
  background: var(--navy-mid);
  border: 2px solid #fff;
  box-shadow: var(--shadow-sm);}
:where(html.edb-4bcd4009) .ex-figure{text-align: center; overflow-x: auto;}
:where(html.edb-4bcd4009) .ex-figure svg{max-width: 100%; height: auto;}
:where(html.edb-4bcd4009) .ex-readout{display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 1rem;}
:where(html.edb-4bcd4009) .ro{display: flex; flex-direction: column; gap: 0.15rem;
  background: var(--warm-white);
  padding: 0.6rem 0.8rem;}
:where(html.edb-4bcd4009) .ro .k{font-family: var(--ff-mono);
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-light-aa);}
:where(html.edb-4bcd4009) .ro .v{font-family: var(--ff-mono);
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--navy);
  font-variant-numeric: tabular-nums;}
:where(html.edb-4bcd4009) .ex-note{margin-top: 0.9rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-mid);
  border-left: 2px solid var(--gold);
  padding-left: 0.8rem;}
:where(html.edb-4bcd4009) .lecture-nav{margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--border);}
:where(html.edb-4bcd4009) .lecture-nav-inner{display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;}
:where(html.edb-4bcd4009) .lec-nav-btn{display: flex; flex-direction: column;
  min-width: 200px;
  padding: 0.7rem 0.95rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;}
:where(html.edb-4bcd4009) .lec-nav-btn:hover{border-color: var(--navy-mid); box-shadow: var(--shadow-md); transform: translateY(-2px);}
:where(html.edb-4bcd4009) .lec-nav-btn .dir{font-size: 0.66rem; color: var(--text-light-aa);
  font-family: var(--ff-mono); letter-spacing: 0.09em;
  text-transform: uppercase; margin-bottom: 0.2rem;}
:where(html.edb-4bcd4009) .lec-nav-btn .title{font-size: 0.9rem; font-weight: 600; color: var(--navy-mid);}
:where(html.edb-4bcd4009) .lec-nav-btn.next{text-align: right; align-items: flex-end;}
:where(html.edb-4bcd4009) .lec-nav-center{font-family: var(--ff-mono); font-size: 0.72rem; color: var(--text-light-aa);}
:where(html.edb-4bcd4009) .chap-rail{display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem;
  margin-top: 1.5rem;
  padding: 0.75rem 0.9rem;
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius);}
:where(html.edb-4bcd4009) .rail-label{font-family: var(--ff-mono);
  font-size: 0.63rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--text-light-aa);
  margin-right: 0.5rem;}
:where(html.edb-4bcd4009) .chap-rail a, :where(html.edb-4bcd4009) .rail-dot{display: inline-flex; align-items: center; justify-content: center;
  min-width: 32px; height: 28px;
  padding: 0 0.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #fff;
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  color: var(--navy-mid);
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s, color 0.15s;}
:where(html.edb-4bcd4009) .chap-rail a:hover{border-color: var(--navy-mid); background: var(--navy-mid); color: #fff;}
:where(html.edb-4bcd4009) .rail-dot.is-current{background: var(--navy);
  border-color: var(--navy);
  color: var(--gold-light);
  font-weight: 500;}
:where(html.edb-4bcd4009) .site-footer{background: var(--navy);
  color: #93b3cc;
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.82rem;}
:where(html.edb-4bcd4009) .site-footer a{color: var(--sky); text-decoration: none;}
:where(html.edb-4bcd4009) .site-footer a:hover{text-decoration: underline;}
:where(html.edb-4bcd4009) .mt-sm{margin-top: 0.75rem;}
:where(html.edb-4bcd4009) .mt-md{margin-top: 1.25rem;}
:where(html.edb-4bcd4009) .mt-lg{margin-top: 2rem;}
:where(html.edb-4bcd4009) .mb-sm{margin-bottom: 0.75rem;}
:where(html.edb-4bcd4009) .mb-md{margin-bottom: 1.25rem;}
:where(html.edb-4bcd4009) .highlight{color: var(--navy-mid); font-weight: 600;}
:where(html.edb-4bcd4009) .hl-gold{color: #7d5a0c; font-weight: 600;}
:where(html.edb-4bcd4009) .text-sm, :where(html.edb-4bcd4009) .text-xs{font-size: 0.875rem; color: var(--text-mid);}
:where(html.edb-4bcd4009) .two-col{display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin: 1.25rem 0;}
:where(html.edb-4bcd4009) .col-stack{display: grid; gap: 0.75rem;}
:where(html.edb-4bcd4009) .is-filtered-out{display: none !important;}
@media (max-width: 980px){
  :where(html.edb-4bcd4009) .page-layout{grid-template-columns: 1fr; gap: 1.5rem; padding: 1.5rem 1.1rem 2.5rem;}
  :where(html.edb-4bcd4009) .toc-sidebar{position: static; margin-bottom: 0.5rem;}
  :where(html.edb-4bcd4009) .toc-box{border-radius: var(--radius);}
  :where(html.edb-4bcd4009) .card-grid{grid-template-columns: 1fr;}
  :where(html.edb-4bcd4009) .page-hero{padding: 2.5rem 1.1rem 2rem;}
  :where(html.edb-4bcd4009) .hero-title{font-size: 1.6rem;}
  :where(html.edb-4bcd4009) .hero-subtitle{font-size: 0.96rem;}
  :where(html.edb-4bcd4009) .lecture-nav-inner{flex-direction: column; align-items: stretch;}
  :where(html.edb-4bcd4009) .lec-nav-btn{min-width: unset;}
  :where(html.edb-4bcd4009) .lec-nav-btn.next{text-align: left; align-items: flex-start;}
  :where(html.edb-4bcd4009) .key-result{flex-direction: column; gap: 0.75rem;}
  :where(html.edb-4bcd4009) .two-col{grid-template-columns: 1fr;}
}
@media (max-width: 640px){
  html:where(.edb-4bcd4009){font-size: 15.5px;}
  :where(html.edb-4bcd4009) .nav-links{display: none;}
  :where(html.edb-4bcd4009) .chapter-brief{border-left-width: 3px;}
  :where(html.edb-4bcd4009) .mis-pair{grid-template-columns: 1fr;}
  :where(html.edb-4bcd4009) .fs-row{grid-template-columns: 1fr; gap: 0.35rem;}
  :where(html.edb-4bcd4009) .fs-eq{padding-left: 0.1rem;}
  :where(html.edb-4bcd4009) .term-list{grid-template-columns: 1fr;}
  :where(html.edb-4bcd4009) .diagram-row{grid-template-columns: 1fr;}
  :where(html.edb-4bcd4009) .ex-controls{grid-template-columns: 1fr;}
  :where(html.edb-4bcd4009) .ex-readout{grid-template-columns: repeat(2, 1fr);}
  :where(html.edb-4bcd4009) .lec-table, :where(html.edb-4bcd4009) .data-table{font-size: 0.84rem;}
  :where(html.edb-4bcd4009) .lec-table td, :where(html.edb-4bcd4009) .data-table td{padding: 0.55rem 0.7rem;}
  :where(html.edb-4bcd4009) .qc-answer{padding-left: 1.15rem;}
  :where(html.edb-4bcd4009) .back-top{right: 0.85rem; bottom: 0.85rem;}
}
@media (prefers-reduced-motion: reduce){
  html:where(.edb-4bcd4009){scroll-behavior: auto;}
  :where(html.edb-4bcd4009), :where(html.edb-4bcd4009) *, :where(html.edb-4bcd4009)::before, :where(html.edb-4bcd4009) *::before, :where(html.edb-4bcd4009)::after, :where(html.edb-4bcd4009) *::after{animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;}
}
@media print{
  :where(html.edb-4bcd4009) body{background: #fff; color: #000;}
  :where(html.edb-4bcd4009) .site-nav, :where(html.edb-4bcd4009) .toc-sidebar, :where(html.edb-4bcd4009) .read-progress, :where(html.edb-4bcd4009) .back-top, :where(html.edb-4bcd4009) .lecture-nav, :where(html.edb-4bcd4009) .chap-rail, :where(html.edb-4bcd4009) .skip-link, :where(html.edb-4bcd4009) .breadcrumb{display: none !important;}
  :where(html.edb-4bcd4009) .page-layout{display: block; padding: 0; max-width: none;}
  :where(html.edb-4bcd4009) .page-hero{background: #fff; color: #000; padding: 0 0 1rem;}
  :where(html.edb-4bcd4009) .page-hero::before{display: none;}
  :where(html.edb-4bcd4009) .hero-title, :where(html.edb-4bcd4009) .hero-subtitle, :where(html.edb-4bcd4009) .hero-tag, :where(html.edb-4bcd4009) .hero-meta{color: #000;}
  :where(html.edb-4bcd4009) .card, :where(html.edb-4bcd4009) .callout, :where(html.edb-4bcd4009) .qc-set, :where(html.edb-4bcd4009) .formula-sheet, :where(html.edb-4bcd4009) .explorer, :where(html.edb-4bcd4009) .table-scroll, :where(html.edb-4bcd4009) .diagram-figure{box-shadow: none; break-inside: avoid;}
  :where(html.edb-4bcd4009) .key-result, :where(html.edb-4bcd4009) .card-navy{background: #f2f2f2 !important; color: #000;}
  :where(html.edb-4bcd4009) .key-result *, :where(html.edb-4bcd4009) .card-navy *{color: #000 !important;}
  :where(html.edb-4bcd4009) .section-heading{break-after: avoid;}
  :where(html.edb-4bcd4009) details{display: block;}
  :where(html.edb-4bcd4009) details > summary{list-style: none;}
  :where(html.edb-4bcd4009) details:not([open]) > *:not(summary){display: block !important;}
  :where(html.edb-4bcd4009) .quick-check > summary::before{content: "?";}
  :where(html.edb-4bcd4009) a[href^="http"]::after{content: " (" attr(href) ")"; font-size: 0.7em; color: #555;}
}
:where(html.edb-3c5e3df8), :where(html.edb-3c5e3df8) *, :where(html.edb-3c5e3df8)::before, :where(html.edb-3c5e3df8) *::before, :where(html.edb-3c5e3df8)::after, :where(html.edb-3c5e3df8) *::after{box-sizing: border-box; margin: 0; padding: 0;}
:root:where(.edb-3c5e3df8){--navy:    #0f1e46;
      --gold:    #c29b3c;
      --steel:   #3465a4;
      --lightbg: #f5f7fc;
      --alertred:#b41e1e;
      --exgreen: #1e783c;
      --border:  #d0d5e8;
      --muted:   #555570;
      --radius:  6px;
      --shadow:  0 2px 12px rgba(15,30,70,.10);}
html:where(.edb-3c5e3df8){scroll-behavior: smooth;}
:where(html.edb-3c5e3df8) body{font-family: "Segoe UI", system-ui, sans-serif;
      font-size: 1rem;
      line-height: 1.75;
      color: #1a1a2e;
      background: #f0f2f8;}
:where(html.edb-3c5e3df8) .wrapper{max-width: 960px; margin: 0 auto; padding: 0 1.25rem 3rem;}
:where(html.edb-3c5e3df8) .site-header{background: var(--navy);
      color: #fff;
      padding: 2.2rem 1.25rem 1.8rem;
      text-align: center;
      border-bottom: 4px solid var(--gold);}
:where(html.edb-3c5e3df8) .site-header h1{font-size: clamp(1.4rem, 3.5vw, 2rem);
      font-weight: 700;
      letter-spacing: -.01em;}
:where(html.edb-3c5e3df8) .site-header .meta{margin-top: .5rem;
      font-size: .9rem;
      opacity: .8;
      color: #c8d0e8;}
:where(html.edb-3c5e3df8) nav.toc{background: #fff;
      border: 1px solid var(--border);
      border-left: 4px solid var(--navy);
      border-radius: var(--radius);
      padding: 1.1rem 1.5rem;
      margin: 1.8rem 0;
      box-shadow: var(--shadow);}
:where(html.edb-3c5e3df8) nav.toc h2{font-size: .95rem; text-transform: uppercase; letter-spacing: .06em; color: var(--navy); margin-bottom: .6rem;}
:where(html.edb-3c5e3df8) nav.toc ol{padding-left: 1.3rem; color: var(--steel);}
:where(html.edb-3c5e3df8) nav.toc li{margin: .25rem 0;}
:where(html.edb-3c5e3df8) nav.toc a{color: var(--steel); text-decoration: none;}
:where(html.edb-3c5e3df8) nav.toc a:hover{text-decoration: underline; color: var(--navy);}
:where(html.edb-3c5e3df8) section > h2{font-size: 1.25rem;
      color: #fff;
      background: var(--navy);
      padding: .55rem 1.1rem;
      border-radius: var(--radius) var(--radius) 0 0;
      margin-top: 2.5rem;
      margin-bottom: 0;
      border-bottom: 3px solid var(--gold);}
:where(html.edb-3c5e3df8) article.slide{background: #fff;
      border: 1px solid var(--border);
      border-radius: 0 0 var(--radius) var(--radius);
      padding: 1.4rem 1.7rem;
      margin-bottom: .3rem;
      box-shadow: var(--shadow);}
:where(html.edb-3c5e3df8) article.slide + article.slide{border-radius: var(--radius);
      margin-top: .5rem;}
:where(html.edb-3c5e3df8) article.slide h3{font-size: 1.05rem;
      color: var(--navy);
      border-bottom: 2px solid var(--gold);
      padding-bottom: .3rem;
      margin-bottom: 1rem;}
:where(html.edb-3c5e3df8) .block, :where(html.edb-3c5e3df8) .block-alert, :where(html.edb-3c5e3df8) .block-example{border-radius: var(--radius);
      padding: .85rem 1.1rem;
      margin: .75rem 0;}
:where(html.edb-3c5e3df8) .block{background: var(--lightbg); border-left: 4px solid var(--navy);}
:where(html.edb-3c5e3df8) .block-alert{background: #fdf0f0;        border-left: 4px solid var(--alertred);}
:where(html.edb-3c5e3df8) .block-example{background: #f0faf4;        border-left: 4px solid var(--exgreen);}
:where(html.edb-3c5e3df8) .block-title{font-weight: 700; font-size: .86rem; text-transform: uppercase; letter-spacing: .04em; margin-bottom: .35rem;}
:where(html.edb-3c5e3df8) .block         .block-title{color: var(--navy);}
:where(html.edb-3c5e3df8) .block-alert   .block-title{color: var(--alertred);}
:where(html.edb-3c5e3df8) .block-example .block-title{color: var(--exgreen);}
:where(html.edb-3c5e3df8) .cols{display: grid; gap: 1.2rem; margin: .7rem 0;}
:where(html.edb-3c5e3df8) .cols-2{grid-template-columns: 1fr 1fr;}
:where(html.edb-3c5e3df8) .cols-3{grid-template-columns: 1fr 1fr 1fr;}
:where(html.edb-3c5e3df8) .cols-5248{grid-template-columns: 52fr 48fr;}
:where(html.edb-3c5e3df8) .cols-5446{grid-template-columns: 54fr 46fr;}
:where(html.edb-3c5e3df8) .cols-4060{grid-template-columns: 40fr 60fr;}
@media (max-width: 680px){
  :where(html.edb-3c5e3df8) .cols-2, :where(html.edb-3c5e3df8) .cols-3, :where(html.edb-3c5e3df8) .cols-5248, :where(html.edb-3c5e3df8) .cols-5446, :where(html.edb-3c5e3df8) .cols-4060{grid-template-columns: 1fr;}
}
:where(html.edb-3c5e3df8) table{border-collapse: collapse; width: 100%; font-size: .92rem; margin: .5rem 0;}
:where(html.edb-3c5e3df8) th, :where(html.edb-3c5e3df8) td{padding: .4rem .7rem; border: 1px solid var(--border); text-align: left;}
:where(html.edb-3c5e3df8) th{background: var(--lightbg); font-weight: 600;}
:where(html.edb-3c5e3df8) .formula-table{width: 100%; border-collapse: collapse; font-size: .95rem; margin: .4rem 0;}
:where(html.edb-3c5e3df8) .formula-table tr{border-bottom: 1px solid var(--border);}
:where(html.edb-3c5e3df8) .formula-table tr:last-child{border-bottom: none;}
:where(html.edb-3c5e3df8) .formula-table td{padding: .55rem .8rem; vertical-align: top;}
:where(html.edb-3c5e3df8) .formula-table td:first-child{width: 34%;
      font-weight: 600;
      color: var(--navy);
      border-right: 2px solid var(--border);
      background: var(--lightbg);}
:where(html.edb-3c5e3df8) .formula-table td:nth-child(2){width: 40%;}
:where(html.edb-3c5e3df8) .formula-table td:nth-child(3){width: 26%; color: var(--muted); font-size: .88rem;}
:where(html.edb-3c5e3df8) .step{font-weight: 700; color: var(--navy); margin-top: .85rem;}
:where(html.edb-3c5e3df8) ul, :where(html.edb-3c5e3df8) ol{padding-left: 1.4rem; margin: .4rem 0;}
:where(html.edb-3c5e3df8) li{margin: .25rem 0;}
:where(html.edb-3c5e3df8) footer{text-align: center;
      padding: 1.2rem;
      font-size: .82rem;
      color: var(--muted);
      border-top: 1px solid var(--border);
      margin-top: 2rem;}
:where(html.edb-5727023d), :where(html.edb-5727023d) *, :where(html.edb-5727023d)::before, :where(html.edb-5727023d) *::before, :where(html.edb-5727023d)::after, :where(html.edb-5727023d) *::after{box-sizing: border-box; margin: 0; padding: 0;}
:root:where(.edb-5727023d){--navy:    #0f1e46;
      --gold:    #c29b3c;
      --steel:   #3465a4;
      --lightbg: #f5f7fc;
      --alertred:#b41e1e;
      --exgreen: #1e783c;
      --border:  #d0d5e8;
      --muted:   #555570;
      --radius:  6px;
      --shadow:  0 2px 12px rgba(15,30,70,.10);}
html:where(.edb-5727023d){scroll-behavior: smooth;}
:where(html.edb-5727023d) body{font-family: "Segoe UI", system-ui, sans-serif;
      font-size: 1rem;
      line-height: 1.75;
      color: #1a1a2e;
      background: #f0f2f8;}
:where(html.edb-5727023d) .wrapper{max-width: 960px; margin: 0 auto; padding: 0 1.25rem 3rem;}
:where(html.edb-5727023d) .site-header{background: var(--navy);
      color: #fff;
      padding: 2.2rem 1.25rem 1.8rem;
      text-align: center;
      border-bottom: 4px solid var(--gold);}
:where(html.edb-5727023d) .site-header h1{font-size: clamp(1.4rem, 3.5vw, 2rem);
      font-weight: 700;
      letter-spacing: -.01em;}
:where(html.edb-5727023d) .site-header .meta{margin-top: .5rem;
      font-size: .9rem;
      opacity: .8;
      color: #c8d0e8;}
:where(html.edb-5727023d) nav.toc{background: #fff;
      border: 1px solid var(--border);
      border-left: 4px solid var(--navy);
      border-radius: var(--radius);
      padding: 1.1rem 1.5rem;
      margin: 1.8rem 0;
      box-shadow: var(--shadow);}
:where(html.edb-5727023d) nav.toc h2{font-size: .95rem; text-transform: uppercase; letter-spacing: .06em; color: var(--navy); margin-bottom: .6rem;}
:where(html.edb-5727023d) nav.toc ol{padding-left: 1.3rem; color: var(--steel);}
:where(html.edb-5727023d) nav.toc li{margin: .25rem 0;}
:where(html.edb-5727023d) nav.toc a{color: var(--steel); text-decoration: none;}
:where(html.edb-5727023d) nav.toc a:hover{text-decoration: underline; color: var(--navy);}
:where(html.edb-5727023d) section > h2{font-size: 1.25rem;
      color: #fff;
      background: var(--navy);
      padding: .55rem 1.1rem;
      border-radius: var(--radius) var(--radius) 0 0;
      margin-top: 2.5rem;
      margin-bottom: 0;
      border-bottom: 3px solid var(--gold);}
:where(html.edb-5727023d) article.slide{background: #fff;
      border: 1px solid var(--border);
      border-radius: 0 0 var(--radius) var(--radius);
      padding: 1.4rem 1.7rem;
      margin-bottom: .3rem;
      box-shadow: var(--shadow);}
:where(html.edb-5727023d) article.slide + article.slide{border-radius: var(--radius);
      margin-top: .5rem;}
:where(html.edb-5727023d) article.slide h3{font-size: 1.05rem;
      color: var(--navy);
      border-bottom: 2px solid var(--gold);
      padding-bottom: .3rem;
      margin-bottom: 1rem;}
:where(html.edb-5727023d) .block, :where(html.edb-5727023d) .block-alert, :where(html.edb-5727023d) .block-example{border-radius: var(--radius);
      padding: .85rem 1.1rem;
      margin: .75rem 0;}
:where(html.edb-5727023d) .block{background: var(--lightbg); border-left: 4px solid var(--navy);}
:where(html.edb-5727023d) .block-alert{background: #fdf0f0;        border-left: 4px solid var(--alertred);}
:where(html.edb-5727023d) .block-example{background: #f0faf4;        border-left: 4px solid var(--exgreen);}
:where(html.edb-5727023d) .block-title{font-weight: 700; font-size: .86rem; text-transform: uppercase; letter-spacing: .04em; margin-bottom: .35rem;}
:where(html.edb-5727023d) .block         .block-title{color: var(--navy);}
:where(html.edb-5727023d) .block-alert   .block-title{color: var(--alertred);}
:where(html.edb-5727023d) .block-example .block-title{color: var(--exgreen);}
:where(html.edb-5727023d) .cols{display: grid; gap: 1.2rem; margin: .7rem 0;}
:where(html.edb-5727023d) .cols-2{grid-template-columns: 1fr 1fr;}
:where(html.edb-5727023d) .cols-3{grid-template-columns: 1fr 1fr 1fr;}
:where(html.edb-5727023d) .cols-5248{grid-template-columns: 52fr 48fr;}
:where(html.edb-5727023d) .cols-5446{grid-template-columns: 54fr 46fr;}
:where(html.edb-5727023d) .cols-4060{grid-template-columns: 40fr 60fr;}
@media (max-width: 680px){
  :where(html.edb-5727023d) .cols-2, :where(html.edb-5727023d) .cols-3, :where(html.edb-5727023d) .cols-5248, :where(html.edb-5727023d) .cols-5446, :where(html.edb-5727023d) .cols-4060{grid-template-columns: 1fr;}
}
:where(html.edb-5727023d) table{border-collapse: collapse; width: 100%; font-size: .92rem; margin: .5rem 0;}
:where(html.edb-5727023d) th, :where(html.edb-5727023d) td{padding: .4rem .7rem; border: 1px solid var(--border); text-align: left;}
:where(html.edb-5727023d) th{background: var(--lightbg); font-weight: 600;}
:where(html.edb-5727023d) .formula-table{width: 100%; border-collapse: collapse; font-size: .95rem; margin: .4rem 0;}
:where(html.edb-5727023d) .formula-table tr{border-bottom: 1px solid var(--border);}
:where(html.edb-5727023d) .formula-table tr:last-child{border-bottom: none;}
:where(html.edb-5727023d) .formula-table td{padding: .55rem .8rem; vertical-align: top;}
:where(html.edb-5727023d) .formula-table td:first-child{width: 34%;
      font-weight: 600;
      color: var(--navy);
      border-right: 2px solid var(--border);
      background: var(--lightbg);}
:where(html.edb-5727023d) .formula-table td:nth-child(2){width: 40%;}
:where(html.edb-5727023d) .formula-table td:nth-child(3){width: 26%; color: var(--muted); font-size: .88rem;}
:where(html.edb-5727023d) .step{font-weight: 700; color: var(--navy); margin-top: .85rem;}
:where(html.edb-5727023d) ul, :where(html.edb-5727023d) ol{padding-left: 1.4rem; margin: .4rem 0;}
:where(html.edb-5727023d) li{margin: .25rem 0;}
:where(html.edb-5727023d) footer{text-align: center;
      padding: 1.2rem;
      font-size: .82rem;
      color: var(--muted);
      border-top: 1px solid var(--border);
      margin-top: 2rem;}
:where(html.edb-f1a3fd80) img{max-width:100%;height:auto}
:where(html.edb-4ada0fe1) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-4ada0fe1) .lecture-content figure{max-width: 100%;}
:where(html.edb-4ada0fe1) .lecture-content .fig-placeholder img{max-width: 100%; height: auto; border-radius: 6px; margin: 0 auto;}
:where(html.edb-4ada0fe1) .card > .card{box-shadow: none; border: none; padding: 0.75rem 0 0; background: transparent;}
:where(html.edb-4ada0fe1) .card > .card-grid{margin-top: 0.75rem;}
:where(html.edb-4ada0fe1) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-4ada0fe1) .card .data-table-wrap{margin-top: 0.75rem;}
:where(html.edb-493468f4), :where(html.edb-493468f4) *, :where(html.edb-493468f4)::before, :where(html.edb-493468f4) *::before, :where(html.edb-493468f4)::after, :where(html.edb-493468f4) *::after{box-sizing: border-box; margin: 0; padding: 0;}
:root:where(.edb-493468f4){--navy:    #0f1e46;
      --gold:    #c29b3c;
      --steel:   #3465a4;
      --lightbg: #f5f7fc;
      --alertred:#b41e1e;
      --exgreen: #1e783c;
      --border:  #d0d5e8;
      --muted:   #555570;
      --radius:  6px;
      --shadow:  0 2px 12px rgba(15,30,70,.10);}
html:where(.edb-493468f4){scroll-behavior: smooth;}
:where(html.edb-493468f4) body{font-family: "Segoe UI", system-ui, sans-serif;
      font-size: 1rem;
      line-height: 1.75;
      color: #1a1a2e;
      background: #f0f2f8;}
:where(html.edb-493468f4) .wrapper{max-width: 960px; margin: 0 auto; padding: 0 1.25rem 3rem;}
:where(html.edb-493468f4) .site-header{background: var(--navy);
      color: #fff;
      padding: 2.2rem 1.25rem 1.8rem;
      text-align: center;
      border-bottom: 4px solid var(--gold);}
:where(html.edb-493468f4) .site-header h1{font-size: clamp(1.4rem, 3.5vw, 2rem);
      font-weight: 700;
      letter-spacing: -.01em;}
:where(html.edb-493468f4) .site-header .meta{margin-top: .5rem;
      font-size: .9rem;
      opacity: .8;
      color: #c8d0e8;}
:where(html.edb-493468f4) nav.toc{background: #fff;
      border: 1px solid var(--border);
      border-left: 4px solid var(--navy);
      border-radius: var(--radius);
      padding: 1.1rem 1.5rem;
      margin: 1.8rem 0;
      box-shadow: var(--shadow);}
:where(html.edb-493468f4) nav.toc h2{font-size: .95rem; text-transform: uppercase; letter-spacing: .06em; color: var(--navy); margin-bottom: .6rem;}
:where(html.edb-493468f4) nav.toc ol{padding-left: 1.3rem; color: var(--steel);}
:where(html.edb-493468f4) nav.toc li{margin: .25rem 0;}
:where(html.edb-493468f4) nav.toc a{color: var(--steel); text-decoration: none;}
:where(html.edb-493468f4) nav.toc a:hover{text-decoration: underline; color: var(--navy);}
:where(html.edb-493468f4) section > h2{font-size: 1.25rem;
      color: #fff;
      background: var(--navy);
      padding: .55rem 1.1rem;
      border-radius: var(--radius) var(--radius) 0 0;
      margin-top: 2.5rem;
      margin-bottom: 0;
      border-bottom: 3px solid var(--gold);}
:where(html.edb-493468f4) article.slide{background: #fff;
      border: 1px solid var(--border);
      border-radius: 0 0 var(--radius) var(--radius);
      padding: 1.4rem 1.7rem;
      margin-bottom: .3rem;
      box-shadow: var(--shadow);}
:where(html.edb-493468f4) article.slide + article.slide{border-radius: var(--radius);
      margin-top: .5rem;}
:where(html.edb-493468f4) article.slide h3{font-size: 1.05rem;
      color: var(--navy);
      border-bottom: 2px solid var(--gold);
      padding-bottom: .3rem;
      margin-bottom: 1rem;}
:where(html.edb-493468f4) .block, :where(html.edb-493468f4) .block-alert, :where(html.edb-493468f4) .block-example{border-radius: var(--radius);
      padding: .85rem 1.1rem;
      margin: .75rem 0;}
:where(html.edb-493468f4) .block{background: var(--lightbg); border-left: 4px solid var(--navy);}
:where(html.edb-493468f4) .block-alert{background: #fdf0f0;        border-left: 4px solid var(--alertred);}
:where(html.edb-493468f4) .block-example{background: #f0faf4;        border-left: 4px solid var(--exgreen);}
:where(html.edb-493468f4) .block-title{font-weight: 700; font-size: .86rem; text-transform: uppercase; letter-spacing: .04em; margin-bottom: .35rem;}
:where(html.edb-493468f4) .block         .block-title{color: var(--navy);}
:where(html.edb-493468f4) .block-alert   .block-title{color: var(--alertred);}
:where(html.edb-493468f4) .block-example .block-title{color: var(--exgreen);}
:where(html.edb-493468f4) .cols{display: grid; gap: 1.2rem; margin: .7rem 0;}
:where(html.edb-493468f4) .cols-2{grid-template-columns: 1fr 1fr;}
:where(html.edb-493468f4) .cols-3{grid-template-columns: 1fr 1fr 1fr;}
:where(html.edb-493468f4) .cols-5248{grid-template-columns: 52fr 48fr;}
:where(html.edb-493468f4) .cols-5446{grid-template-columns: 54fr 46fr;}
@media (max-width: 680px){
  :where(html.edb-493468f4) .cols-2, :where(html.edb-493468f4) .cols-3, :where(html.edb-493468f4) .cols-5248, :where(html.edb-493468f4) .cols-5446{grid-template-columns: 1fr;}
}
:where(html.edb-493468f4) table{border-collapse: collapse; width: 100%; font-size: .92rem; margin: .5rem 0;}
:where(html.edb-493468f4) th, :where(html.edb-493468f4) td{padding: .4rem .7rem; border: 1px solid var(--border); text-align: left;}
:where(html.edb-493468f4) th{background: var(--lightbg); font-weight: 600;}
:where(html.edb-493468f4) .formula-table{width: 100%; border-collapse: collapse; font-size: .95rem; margin: .4rem 0;}
:where(html.edb-493468f4) .formula-table tr{border-bottom: 1px solid var(--border);}
:where(html.edb-493468f4) .formula-table tr:last-child{border-bottom: none;}
:where(html.edb-493468f4) .formula-table td{padding: .55rem .8rem; vertical-align: top;}
:where(html.edb-493468f4) .formula-table td:first-child{width: 34%;
      font-weight: 600;
      color: var(--navy);
      border-right: 2px solid var(--border);
      background: var(--lightbg);}
:where(html.edb-493468f4) .formula-table td:nth-child(2){width: 40%;}
:where(html.edb-493468f4) .formula-table td:nth-child(3){width: 26%; color: var(--muted); font-size: .88rem;}
:where(html.edb-493468f4) .step{font-weight: 700; color: var(--navy); margin-top: .85rem;}
:where(html.edb-493468f4) ul, :where(html.edb-493468f4) ol{padding-left: 1.4rem; margin: .4rem 0;}
:where(html.edb-493468f4) li{margin: .25rem 0;}
:where(html.edb-493468f4) footer{text-align: center;
      padding: 1.2rem;
      font-size: .82rem;
      color: var(--muted);
      border-top: 1px solid var(--border);
      margin-top: 2rem;}
:where(html.edb-dc88ec73) .lecture-content img{max-width:100%; height:auto; display:block;}
:where(html.edb-dc88ec73) .lecture-content figure{max-width:100%;}
:where(html.edb-dc88ec73) .card > .card{box-shadow:none; border:none; padding:0.5rem 0 0; background:transparent;}
:where(html.edb-dc88ec73) .card > .card-grid{margin-top:0.75rem;}
:where(html.edb-dc88ec73) .card .eq-block{border-radius:var(--radius);}
:where(html.edb-dc88ec73) .card .data-table-wrap{margin-top:0.75rem;}
:where(html.edb-dc88ec73) .text-sm, :where(html.edb-dc88ec73) .text-xs{font-size:0.875rem; color:var(--text-mid);}
:where(html.edb-dc88ec73) .num{font-family:var(--ff-mono); color:var(--navy-mid); font-weight:600;}
:where(html.edb-68227581) .col-fig{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem;margin:1rem 0;}
:where(html.edb-68227581) .col-stack{display:flex;flex-direction:column;gap:0.75rem;margin:0.75rem 0;}
:where(html.edb-68227581) .col-item{}
:where(html.edb-68227581) .eq-desc{margin-top:0.4rem;font-size:0.93rem;color:var(--text-mid);line-height:1.6;}
:where(html.edb-68227581) .lecture-content .card-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
:where(html.edb-68227581) .card > .card{box-shadow:none;border:none;padding:0.5rem 0 0;background:transparent;}
:where(html.edb-68227581) .card > .card-grid{margin-top:0.75rem;}
:where(html.edb-68227581) .card .eq-block{border-radius:var(--radius);}
:where(html.edb-68227581) .card .data-table-wrap{margin-top:0.75rem;}
:where(html.edb-68227581) .lecture-content img{max-width:100%;height:auto;display:block;}
:where(html.edb-68227581) .lecture-content figure{max-width:100%;}
:where(html.edb-816cda51) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-816cda51) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-816cda51) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-816cda51) .card-navy{color: #eef2fb;}
:where(html.edb-816cda51) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-816cda51) .card-navy strong{color: #ffffff;}
:where(html.edb-816cda51) .card-navy em{color: #d9e2f5;}
:where(html.edb-816cda51) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-816cda51) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-816cda51) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-816cda51) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-816cda51) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-816cda51) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-816cda51) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-816cda51) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-816cda51) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-816cda51) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-816cda51) .lec-table{width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.92rem;}
:where(html.edb-816cda51) .lec-table th, :where(html.edb-816cda51) .lec-table td{border: 1px solid var(--border, #e3e8ef); padding: 0.55rem 0.7rem; text-align: left;}
:where(html.edb-816cda51) .lec-table thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a); font-family: var(--ff-mono, monospace); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase;}
:where(html.edb-816cda51) .lec-table tbody tr:nth-child(even){background: #f6f8fb;}
:where(html.edb-816cda51) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-a1ec368e) .question-card{margin-bottom: 1.5rem;}
:where(html.edb-a1ec368e) .question-stem p{margin-bottom: 0.85rem;}
:where(html.edb-a1ec368e) .question-choices{padding-left: 1.25rem;}
:where(html.edb-a1ec368e) .question-choices li{margin-bottom: 0.4rem;}
:where(html.edb-a1ec368e) .centered-block{text-align: center; margin: 1rem 0;}
:where(html.edb-a1ec368e) .figure-block{margin: 1rem auto; text-align: center;}
:where(html.edb-a1ec368e) .figure-block img{width: min(100%, 780px); height: auto; border-radius: 8px; box-shadow: var(--shadow-sm); display: block; margin: 0 auto;}
:where(html.edb-a1ec368e) .figure-block figcaption{margin-top: 0.45rem; color: var(--text-light); font-size: 0.86rem;}
:where(html.edb-b656d61d) .emf-table{border-collapse:collapse;margin:1rem 0;width:auto}
:where(html.edb-b656d61d) .emf-table td, :where(html.edb-b656d61d) .emf-table th{border:1px solid var(--border,#d0d7de);padding:.45rem .8rem;text-align:left;vertical-align:top}
:where(html.edb-b656d61d) .emf-table.match-table td:first-child{font-weight:600}
:where(html.edb-b656d61d) .blank{letter-spacing:1px;color:#888}
:where(html.edb-b656d61d) .fig-img{max-width:100%;height:auto}
:where(html.edb-b656d61d) .step-heading{margin:1.1rem 0 .4rem;font-size:1.02rem}
:where(html.edb-2901f683) .emf-table{border-collapse:collapse;margin:1rem 0;width:auto}
:where(html.edb-2901f683) .emf-table td, :where(html.edb-2901f683) .emf-table th{border:1px solid var(--border,#d0d7de);padding:.45rem .8rem;text-align:left;vertical-align:top}
:where(html.edb-2901f683) .emf-table.match-table td:first-child{font-weight:600}
:where(html.edb-2901f683) .blank{letter-spacing:1px;color:#888}
:where(html.edb-2901f683) .fig-img{max-width:100%;height:auto}
:where(html.edb-2901f683) .step-heading{margin:1.1rem 0 .4rem;font-size:1.02rem}
:where(html.edb-2901f683) .note-box{border-left:4px solid #d98e00;background:#fff8ec;padding:.7rem 1rem;margin:1rem 0;border-radius:6px}
:where(html.edb-2901f683) .note-box .note-label{font-weight:700;color:#9a6600;display:block;margin-bottom:.25rem}
:where(html.edb-0e019a6c) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-0e019a6c) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-0e019a6c) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-0e019a6c) .card-navy{color: #eef2fb;}
:where(html.edb-0e019a6c) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-0e019a6c) .card-navy strong{color: #ffffff;}
:where(html.edb-0e019a6c) .card-navy em{color: #d9e2f5;}
:where(html.edb-0e019a6c) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-0e019a6c) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-0e019a6c) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-0e019a6c) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-0e019a6c) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-0e019a6c) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-0e019a6c) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-0e019a6c) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-0e019a6c) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-0e019a6c) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-0e019a6c) .lec-table{width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.92rem;}
:where(html.edb-0e019a6c) .lec-table th, :where(html.edb-0e019a6c) .lec-table td{border: 1px solid var(--border, #e3e8ef); padding: 0.55rem 0.7rem; text-align: left;}
:where(html.edb-0e019a6c) .lec-table thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a); font-family: var(--ff-mono, monospace); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase;}
:where(html.edb-0e019a6c) .lec-table tbody tr:nth-child(even){background: #f6f8fb;}
:where(html.edb-0e019a6c) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-3a998274) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-3a998274) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-3a998274) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-3a998274) .card-navy{color: #eef2fb;}
:where(html.edb-3a998274) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-3a998274) .card-navy strong{color: #ffffff;}
:where(html.edb-3a998274) .card-navy em{color: #d9e2f5;}
:where(html.edb-3a998274) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-3a998274) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-3a998274) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-3a998274) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-3a998274) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-3a998274) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-3a998274) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-3a998274) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-3a998274) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-3a998274) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-3a998274) .lec-table{width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.92rem;}
:where(html.edb-3a998274) .lec-table th, :where(html.edb-3a998274) .lec-table td{border: 1px solid var(--border, #e3e8ef); padding: 0.55rem 0.7rem; text-align: left;}
:where(html.edb-3a998274) .lec-table thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a); font-family: var(--ff-mono, monospace); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase;}
:where(html.edb-3a998274) .lec-table tbody tr:nth-child(even){background: #f6f8fb;}
:where(html.edb-3a998274) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-09f2e41c) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-09f2e41c) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-09f2e41c) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-09f2e41c) .card-navy{color: #eef2fb;}
:where(html.edb-09f2e41c) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-09f2e41c) .card-navy strong{color: #ffffff;}
:where(html.edb-09f2e41c) .card-navy em{color: #d9e2f5;}
:where(html.edb-09f2e41c) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-09f2e41c) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-09f2e41c) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-09f2e41c) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-09f2e41c) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-09f2e41c) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-09f2e41c) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-09f2e41c) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-09f2e41c) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-09f2e41c) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-09f2e41c) .lec-table{width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.92rem;}
:where(html.edb-09f2e41c) .lec-table th, :where(html.edb-09f2e41c) .lec-table td{border: 1px solid var(--border, #e3e8ef); padding: 0.55rem 0.7rem; text-align: left;}
:where(html.edb-09f2e41c) .lec-table thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a); font-family: var(--ff-mono, monospace); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase;}
:where(html.edb-09f2e41c) .lec-table tbody tr:nth-child(even){background: #f6f8fb;}
:where(html.edb-09f2e41c) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-0d597d15) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-0d597d15) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-0d597d15) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-0d597d15) #header-container{min-height: 68px;}
:where(html.edb-0d597d15) #footer-container{min-height: 220px;}
:where(html.edb-0d597d15) .ed-header ul:not(.dropdown-menu), :where(html.edb-0d597d15) .footer ul, :where(html.edb-0d597d15) .footer ol{list-style: none;
      margin: 0;
      padding-left: 0;}
:where(html.edb-0d597d15) .ed-header li, :where(html.edb-0d597d15) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-0d597d15) .ed-header a, :where(html.edb-0d597d15) .footer a{text-decoration: none;}
:where(html.edb-0d597d15) .ed-header p, :where(html.edb-0d597d15) .footer p{max-width: none;}
:where(html.edb-0d597d15) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-0d597d15) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-0d597d15) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-0d597d15) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-0d597d15) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-0d597d15) .card-navy{color: #eef2fb;}
:where(html.edb-0d597d15) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-0d597d15) .card-navy strong{color: #ffffff;}
:where(html.edb-0d597d15) .card-navy em{color: #d9e2f5;}
:where(html.edb-0d597d15) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-0d597d15) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-0d597d15) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-0d597d15) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-0d597d15) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-0d597d15) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-0d597d15) .col-fig{display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.25rem;
      margin: 1rem 0;}
:where(html.edb-0d597d15) .eq-desc{margin-top: 0.4rem;
      font-size: 0.93rem;
      color: var(--text-mid);
      line-height: 1.6;}
:where(html.edb-0d597d15) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-0d597d15) .lecture-content figure{max-width: 100%;}
:where(html.edb-0d597d15) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-0d597d15) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-0d597d15) .card .data-table-wrap{margin-top: 0.75rem;}
:where(html.edb-0d597d15) .answer{margin-top: 0.6rem;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;}
:where(html.edb-0d597d15) .answer > summary{cursor: pointer; list-style: none;
      padding: 0.5rem 0.8rem;
      font-family: var(--ff-mono); font-size: 0.7rem;
      letter-spacing: 0.1em; text-transform: uppercase;
      color: var(--navy);}
:where(html.edb-0d597d15) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-0d597d15) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-0d597d15) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-0d597d15) .answer .answer-body{padding: 0 0.8rem 0.8rem;
      font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-0d597d15) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-0d597d15) .svg-fig{width: 100%; height: auto; display: block; margin: 0.5rem auto;}
:where(html.edb-0d597d15) .svg-fig text{font-family: var(--ff-body);}
:where(html.edb-073a73f5) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-073a73f5) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-073a73f5) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-073a73f5) #header-container{min-height: 68px;}
:where(html.edb-073a73f5) #footer-container{min-height: 220px;}
:where(html.edb-073a73f5) .ed-header ul:not(.dropdown-menu), :where(html.edb-073a73f5) .footer ul, :where(html.edb-073a73f5) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-073a73f5) .ed-header li, :where(html.edb-073a73f5) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-073a73f5) .ed-header a, :where(html.edb-073a73f5) .footer a{text-decoration: none;}
:where(html.edb-073a73f5) .ed-header p, :where(html.edb-073a73f5) .footer p{max-width: none;}
:where(html.edb-073a73f5) .toc-box{max-height: calc(100vh - 96px); overflow-y: auto;}
:where(html.edb-073a73f5) .page-layout{display: grid; grid-template-columns: 260px minmax(0,1fr); gap: 2rem; align-items: start;}
:where(html.edb-073a73f5) .toc-sidebar{position: sticky; top: 72px; align-self: start; height: fit-content;}
:where(html.edb-073a73f5) .lecture-content{min-width: 0;}
@media (max-width: 800px){
  :where(html.edb-073a73f5) .page-layout{grid-template-columns: 1fr; gap: 0;}
  :where(html.edb-073a73f5) .toc-sidebar{position: static; height: auto;}
  :where(html.edb-073a73f5) .toc-box{max-height: none; overflow: visible;}
}
:where(html.edb-073a73f5) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-073a73f5) .answer > summary{cursor: pointer; list-style: none; padding: 0.5rem 0.8rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--navy);}
:where(html.edb-073a73f5) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-073a73f5) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-073a73f5) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-073a73f5) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-073a73f5) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-073a73f5) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-073a73f5) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-073a73f5) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-073a73f5) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-073a73f5) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-073a73f5) .card-navy{color: #eef2fb;}
:where(html.edb-073a73f5) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-073a73f5) .card-navy strong{color: #ffffff;}
:where(html.edb-073a73f5) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-073a73f5) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-073a73f5) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-073a73f5) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-073a73f5) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-073a73f5) .chip{display: inline-flex; align-items: center; gap: 0.3rem; background: rgba(26,58,92,0.1); border: 1px solid rgba(26,58,92,0.2); color: var(--navy-mid); font-family: var(--ff-mono); font-size: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 999px;}
:where(html.edb-073a73f5) .chip-gold{background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.4); color: #7a5c10;}
:where(html.edb-073a73f5) .chip-red{background: rgba(192,57,43,0.1);   border-color: rgba(192,57,43,0.3);  color: var(--red);}
:where(html.edb-073a73f5) .chip-green{background: rgba(26,107,60,0.1);   border-color: rgba(26,107,60,0.3);  color: var(--green);}
:where(html.edb-073a73f5) .card-alert{border-left: 4px solid var(--red);}
:where(html.edb-073a73f5) .tut-intro{background: linear-gradient(135deg, var(--cream) 0%, #efe9dd 100%); border: 1px solid var(--border); border-left: 4px solid var(--gold); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.6rem; margin-bottom: 2.5rem;}
:where(html.edb-073a73f5) .tut-intro h2{font-family: var(--ff-display); color: var(--navy); font-size: 1.3rem; margin-bottom: 0.45rem;}
:where(html.edb-073a73f5) .tut-intro p{font-size: 0.94rem; color: var(--text-mid); margin: 0;}
:where(html.edb-073a73f5) .tut-intro .tut-meta{margin-top: 0.65rem; font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--text-light);}
:where(html.edb-073a73f5) .problem-block{margin: 0 0 3.5rem; scroll-margin-top: 80px;}
:where(html.edb-073a73f5) .problem-block:not(:first-of-type){padding-top: 2.75rem; border-top: 2px solid var(--border);}
:where(html.edb-073a73f5) .pb-header{display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--border);}
:where(html.edb-073a73f5) .pb-badge{font-family: var(--ff-display); font-weight: 700; font-size: 1.5rem; line-height: 1.15; color: var(--navy); display: inline-flex; align-items: center;}
:where(html.edb-073a73f5) .pb-badge::before{content: ""; width: 5px; height: 1.35rem; background: var(--gold); border-radius: 2px; margin-right: 0.6rem;}
:where(html.edb-073a73f5) .pb-topic{margin-left: auto; font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: var(--steel); background: rgba(74,127,165,0.1); border: 1px solid rgba(74,127,165,0.25); padding: 0.22rem 0.6rem; border-radius: 999px;}
:where(html.edb-073a73f5) .pb-header .chip{font-size: 0.62rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; padding: 0.18rem 0.55rem;}
:where(html.edb-073a73f5) .problem-statement{background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--steel); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.15rem 1.4rem; box-shadow: var(--shadow-sm);}
:where(html.edb-073a73f5) .problem-statement > *:first-child{margin-top: 0;}
:where(html.edb-073a73f5) .problem-statement > *:last-child{margin-bottom: 0;}
:where(html.edb-073a73f5) .problem-statement p{font-size: 0.97rem; color: var(--text-dark); margin-bottom: 0.55rem; line-height: 1.7;}
:where(html.edb-073a73f5) .problem-statement ol, :where(html.edb-073a73f5) .problem-statement ul.sub-parts{margin: 0.5rem 0 0.25rem 1.4rem; font-size: 0.95rem; color: var(--text-dark);}
:where(html.edb-073a73f5) .problem-statement ol li, :where(html.edb-073a73f5) .problem-statement ul.sub-parts li{margin-bottom: 0.25rem;}
:where(html.edb-073a73f5) .solution-block{margin-top: 1.5rem; background: var(--warm-white); border: 1px solid var(--border); border-left: 5px solid var(--green); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.5rem 1.5rem; box-shadow: var(--shadow-sm); counter-reset: solstep; scroll-margin-top: 80px;}
:where(html.edb-073a73f5) .solution-label{display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--ff-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; background: var(--green); padding: 0.35rem 0.95rem; border-radius: 999px; margin-bottom: 1.15rem;}
:where(html.edb-073a73f5) .sol-step{position: relative; padding-left: 2rem; margin-bottom: 1.2rem;}
:where(html.edb-073a73f5) .sol-step::before{counter-increment: solstep; content: counter(solstep); position: absolute; left: 0; top: 0.15rem; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: rgba(26,107,60,0.1); border: 1px solid rgba(26,107,60,0.3); color: var(--green); font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 700; display: flex; align-items: center; justify-content: center;}
:where(html.edb-073a73f5) .sol-step > p{font-size: 0.95rem; color: var(--text-mid); margin: 0 0 0.4rem; line-height: 1.75;}
:where(html.edb-073a73f5) .sol-step .eq-block{margin: 0.5rem 0 0.6rem;}
:where(html.edb-073a73f5) .solution-block > .insight-strip{margin: 1.25rem 0 0;}
:where(html.edb-073a73f5) .answer-badge{display: flex; align-items: baseline; gap: 0.65rem; flex-wrap: wrap; margin-top: 1.5rem; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%); border-radius: var(--radius); padding: 0.85rem 1.3rem; box-shadow: var(--shadow-sm);}
:where(html.edb-073a73f5) .answer-badge .ab-label{font-family: var(--ff-mono); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--gold); flex-shrink: 0;}
:where(html.edb-073a73f5) .answer-badge .ab-value{font-family: var(--ff-body); font-size: 1.05rem; color: #fff; font-weight: 600;}
:where(html.edb-073a73f5) .answer-badge .ab-value .math, :where(html.edb-073a73f5) .answer-badge mjx-container{color: #fff !important;}
:where(html.edb-073a73f5) .part-tag{display: inline-block; margin-right: 0.45rem; font-family: var(--ff-mono); font-size: 0.72rem; font-weight: 700; color: var(--navy-mid); background: rgba(26,58,92,0.08); border: 1px solid rgba(26,58,92,0.18); padding: 0.05rem 0.45rem; border-radius: 4px;}
:where(html.edb-073a73f5) .wave-fig{background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem 1.1rem 0.7rem; margin: 1rem auto; max-width: 560px; box-shadow: var(--shadow-sm);}
:where(html.edb-073a73f5) .wave-fig svg{width: 100%; height: auto; display: block;}
:where(html.edb-073a73f5) .wave-fig figcaption{margin-top: 0.55rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--steel); text-transform: uppercase; text-align: center; line-height: 1.5;}
:where(html.edb-073a73f5) .fig-pair{display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1rem; margin: 1rem 0;}
:where(html.edb-073a73f5) .fig-pair .wave-fig{margin: 0; max-width: none;}
:where(html.edb-073a73f5) .video-wrap{position: relative; width: 100%; max-width: 700px; margin: 0 auto 1rem; aspect-ratio: 16 / 9; min-height: 220px; border-radius: var(--radius-lg); overflow: hidden; background: #000; border: 1px solid var(--border); box-shadow: var(--shadow-md);}
:where(html.edb-073a73f5) .video-wrap iframe{position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block;}
@supports (aspect-ratio: 16 / 9){
  :where(html.edb-073a73f5) .video-wrap{min-height: 0;}
}
@media (max-width: 640px){
  :where(html.edb-073a73f5) .problem-block{margin-bottom: 2.75rem;}
  :where(html.edb-073a73f5) .problem-block:not(:first-of-type){padding-top: 2rem;}
  :where(html.edb-073a73f5) .pb-badge{font-size: 1.3rem;}
  :where(html.edb-073a73f5) .problem-statement, :where(html.edb-073a73f5) .solution-block{padding-left: 1.05rem; padding-right: 1.05rem;}
  :where(html.edb-073a73f5) .sol-step{padding-left: 1.75rem;}
}
:where(html.edb-643bcce2) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-643bcce2) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-643bcce2) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-643bcce2) #header-container{min-height: 68px;}
:where(html.edb-643bcce2) #footer-container{min-height: 220px;}
:where(html.edb-643bcce2) .ed-header ul:not(.dropdown-menu), :where(html.edb-643bcce2) .footer ul, :where(html.edb-643bcce2) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-643bcce2) .ed-header li, :where(html.edb-643bcce2) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-643bcce2) .ed-header a, :where(html.edb-643bcce2) .footer a{text-decoration: none;}
:where(html.edb-643bcce2) .ed-header p, :where(html.edb-643bcce2) .footer p{max-width: none;}
:where(html.edb-643bcce2) .toc-box{max-height: calc(100vh - 96px); overflow-y: auto;}
:where(html.edb-643bcce2) .page-layout{display: grid; grid-template-columns: 260px minmax(0,1fr); gap: 2rem; align-items: start;}
:where(html.edb-643bcce2) .toc-sidebar{position: sticky; top: 72px; align-self: start; height: fit-content;}
:where(html.edb-643bcce2) .lecture-content{min-width: 0;}
@media (max-width: 800px){
  :where(html.edb-643bcce2) .page-layout{grid-template-columns: 1fr; gap: 0;}
  :where(html.edb-643bcce2) .toc-sidebar{position: static; height: auto;}
  :where(html.edb-643bcce2) .toc-box{max-height: none; overflow: visible;}
}
:where(html.edb-643bcce2) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-643bcce2) .answer > summary{cursor: pointer; list-style: none; padding: 0.5rem 0.8rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--navy);}
:where(html.edb-643bcce2) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-643bcce2) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-643bcce2) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-643bcce2) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-643bcce2) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-643bcce2) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-643bcce2) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-643bcce2) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-643bcce2) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-643bcce2) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-643bcce2) .card-navy{color: #eef2fb;}
:where(html.edb-643bcce2) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-643bcce2) .card-navy strong{color: #ffffff;}
:where(html.edb-643bcce2) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-643bcce2) .card-navy .eq-block mjx-container, :where(html.edb-643bcce2) .card-navy .eq-block .math, :where(html.edb-643bcce2) .card-navy .data-table mjx-container, :where(html.edb-643bcce2) .card-navy .data-table .math{color: var(--ink, #16233a) !important;}
:where(html.edb-643bcce2) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-643bcce2) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-643bcce2) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-643bcce2) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-643bcce2) .chip{display: inline-flex; align-items: center; gap: 0.3rem; background: rgba(26,58,92,0.1); border: 1px solid rgba(26,58,92,0.2); color: var(--navy-mid); font-family: var(--ff-mono); font-size: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 999px;}
:where(html.edb-643bcce2) .chip-gold{background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.4); color: #7a5c10;}
:where(html.edb-643bcce2) .chip-red{background: rgba(192,57,43,0.1);   border-color: rgba(192,57,43,0.3);  color: var(--red);}
:where(html.edb-643bcce2) .chip-green{background: rgba(26,107,60,0.1);   border-color: rgba(26,107,60,0.3);  color: var(--green);}
:where(html.edb-643bcce2) .card-alert{border-left: 4px solid var(--red);}
:where(html.edb-643bcce2) .tut-intro{background: linear-gradient(135deg, var(--cream) 0%, #efe9dd 100%); border: 1px solid var(--border); border-left: 4px solid var(--gold); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.6rem; margin-bottom: 2.5rem;}
:where(html.edb-643bcce2) .tut-intro h2{font-family: var(--ff-display); color: var(--navy); font-size: 1.3rem; margin-bottom: 0.45rem;}
:where(html.edb-643bcce2) .tut-intro p{font-size: 0.94rem; color: var(--text-mid); margin: 0;}
:where(html.edb-643bcce2) .tut-intro .tut-meta{margin-top: 0.65rem; font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--text-light);}
:where(html.edb-643bcce2) .problem-block{margin: 0 0 3.5rem; scroll-margin-top: 80px;}
:where(html.edb-643bcce2) .problem-block:not(:first-of-type){padding-top: 2.75rem; border-top: 2px solid var(--border);}
:where(html.edb-643bcce2) .pb-header{display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--border);}
:where(html.edb-643bcce2) .pb-badge{font-family: var(--ff-display); font-weight: 700; font-size: 1.5rem; line-height: 1.15; color: var(--navy); display: inline-flex; align-items: center;}
:where(html.edb-643bcce2) .pb-badge::before{content: ""; width: 5px; height: 1.35rem; background: var(--gold); border-radius: 2px; margin-right: 0.6rem;}
:where(html.edb-643bcce2) .pb-topic{margin-left: auto; font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: var(--steel); background: rgba(74,127,165,0.1); border: 1px solid rgba(74,127,165,0.25); padding: 0.22rem 0.6rem; border-radius: 999px;}
:where(html.edb-643bcce2) .pb-header .chip{font-size: 0.62rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; padding: 0.18rem 0.55rem;}
:where(html.edb-643bcce2) .problem-statement{background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--steel); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.15rem 1.4rem; box-shadow: var(--shadow-sm);}
:where(html.edb-643bcce2) .problem-statement > *:first-child{margin-top: 0;}
:where(html.edb-643bcce2) .problem-statement > *:last-child{margin-bottom: 0;}
:where(html.edb-643bcce2) .problem-statement p{font-size: 0.97rem; color: var(--text-dark); margin-bottom: 0.55rem; line-height: 1.7;}
:where(html.edb-643bcce2) .problem-statement ol, :where(html.edb-643bcce2) .problem-statement ul.sub-parts{margin: 0.5rem 0 0.25rem 1.4rem; font-size: 0.95rem; color: var(--text-dark);}
:where(html.edb-643bcce2) .problem-statement ol li, :where(html.edb-643bcce2) .problem-statement ul.sub-parts li{margin-bottom: 0.25rem;}
:where(html.edb-643bcce2) .solution-block{margin-top: 1.5rem; background: var(--warm-white); border: 1px solid var(--border); border-left: 5px solid var(--green); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.5rem 1.5rem; box-shadow: var(--shadow-sm); counter-reset: solstep; scroll-margin-top: 80px;}
:where(html.edb-643bcce2) .solution-label{display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--ff-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; background: var(--green); padding: 0.35rem 0.95rem; border-radius: 999px; margin-bottom: 1.15rem;}
:where(html.edb-643bcce2) .sol-step{position: relative; padding-left: 2rem; margin-bottom: 1.2rem;}
:where(html.edb-643bcce2) .sol-step::before{counter-increment: solstep; content: counter(solstep); position: absolute; left: 0; top: 0.15rem; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: rgba(26,107,60,0.1); border: 1px solid rgba(26,107,60,0.3); color: var(--green); font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 700; display: flex; align-items: center; justify-content: center;}
:where(html.edb-643bcce2) .sol-step > p{font-size: 0.95rem; color: var(--text-mid); margin: 0 0 0.4rem; line-height: 1.75;}
:where(html.edb-643bcce2) .sol-step .eq-block{margin: 0.5rem 0 0.6rem;}
:where(html.edb-643bcce2) .solution-block > .insight-strip{margin: 1.25rem 0 0;}
:where(html.edb-643bcce2) .answer-badge{display: flex; align-items: baseline; gap: 0.65rem; flex-wrap: wrap; margin-top: 1.5rem; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%); border-radius: var(--radius); padding: 0.85rem 1.3rem; box-shadow: var(--shadow-sm);}
:where(html.edb-643bcce2) .answer-badge .ab-label{font-family: var(--ff-mono); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--gold); flex-shrink: 0;}
:where(html.edb-643bcce2) .answer-badge .ab-value{font-family: var(--ff-body); font-size: 1.05rem; color: #fff; font-weight: 600;}
:where(html.edb-643bcce2) .answer-badge .ab-value .math, :where(html.edb-643bcce2) .answer-badge mjx-container{color: #fff !important;}
:where(html.edb-643bcce2) .part-tag{display: inline-block; margin-right: 0.45rem; font-family: var(--ff-mono); font-size: 0.72rem; font-weight: 700; color: var(--navy-mid); background: rgba(26,58,92,0.08); border: 1px solid rgba(26,58,92,0.18); padding: 0.05rem 0.45rem; border-radius: 4px;}
:where(html.edb-643bcce2) .wave-fig{background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem 1.1rem 0.7rem; margin: 1rem auto; max-width: 560px; box-shadow: var(--shadow-sm);}
:where(html.edb-643bcce2) .wave-fig svg{width: 100%; height: auto; display: block;}
:where(html.edb-643bcce2) .wave-fig figcaption{margin-top: 0.55rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--steel); text-transform: uppercase; text-align: center; line-height: 1.5;}
:where(html.edb-643bcce2) .fig-pair{display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1rem; margin: 1rem 0;}
:where(html.edb-643bcce2) .fig-pair .wave-fig{margin: 0; max-width: none;}
:where(html.edb-643bcce2) .video-wrap{position: relative; width: 100%; max-width: 700px; margin: 0 auto 1rem; aspect-ratio: 16 / 9; min-height: 220px; border-radius: var(--radius-lg); overflow: hidden; background: #000; border: 1px solid var(--border); box-shadow: var(--shadow-md);}
:where(html.edb-643bcce2) .video-wrap iframe{position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block;}
@supports (aspect-ratio: 16 / 9){
  :where(html.edb-643bcce2) .video-wrap{min-height: 0;}
}
@media (max-width: 640px){
  :where(html.edb-643bcce2) .problem-block{margin-bottom: 2.75rem;}
  :where(html.edb-643bcce2) .problem-block:not(:first-of-type){padding-top: 2rem;}
  :where(html.edb-643bcce2) .pb-badge{font-size: 1.3rem;}
  :where(html.edb-643bcce2) .problem-statement, :where(html.edb-643bcce2) .solution-block{padding-left: 1.05rem; padding-right: 1.05rem;}
  :where(html.edb-643bcce2) .sol-step{padding-left: 1.75rem;}
}
:where(html.edb-283d2e26) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-283d2e26) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-283d2e26) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-283d2e26) .card-navy{color: #eef2fb;}
:where(html.edb-283d2e26) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-283d2e26) .card-navy strong{color: #ffffff;}
:where(html.edb-283d2e26) .card-navy em{color: #d9e2f5;}
:where(html.edb-283d2e26) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-283d2e26) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-283d2e26) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-283d2e26) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-283d2e26) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-283d2e26) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-283d2e26) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-283d2e26) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-283d2e26) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-283d2e26) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-5cc77621) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-5cc77621) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-5cc77621) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-5cc77621) .back-top:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-5cc77621) #header-container{min-height: 68px;}
:where(html.edb-5cc77621) #footer-container{min-height: 220px;}
:where(html.edb-5cc77621) .ed-header ul:not(.dropdown-menu), :where(html.edb-5cc77621) .footer ul, :where(html.edb-5cc77621) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-5cc77621) .ed-header li, :where(html.edb-5cc77621) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-5cc77621) .ed-header a, :where(html.edb-5cc77621) .footer a{text-decoration: none;}
:where(html.edb-5cc77621) .ed-header p, :where(html.edb-5cc77621) .footer p{max-width: none;}
:where(html.edb-5cc77621) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-5cc77621) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-5cc77621) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-5cc77621) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-5cc77621) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-5cc77621) .card-navy{color: #eef2fb;}
:where(html.edb-5cc77621) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-5cc77621) .card-navy strong{color: #ffffff;}
:where(html.edb-5cc77621) .card-navy em{color: #d9e2f5;}
:where(html.edb-5cc77621) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-5cc77621) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-5cc77621) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-5cc77621) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-5cc77621) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-5cc77621) .key-result .eq-block, :where(html.edb-5cc77621) .card-navy .eq-block{background: rgba(255, 255, 255, 0.07);
      border-left: 4px solid var(--gold, #c9a84c);
      margin: 0.85rem 0;}
:where(html.edb-5cc77621) .key-result .eq-block .math, :where(html.edb-5cc77621) .card-navy .eq-block .math{color: #ffe1a3;}
:where(html.edb-5cc77621) .key-result .eq-block mjx-container, :where(html.edb-5cc77621) .card-navy .eq-block mjx-container{color: #ffe1a3 !important;}
:where(html.edb-5cc77621) .key-result .kr-body strong{color: #ffffff;}
:where(html.edb-5cc77621) .key-result .kr-body em{color: #d9e2f5;}
:where(html.edb-5cc77621) .key-result .kr-body .highlight{color: var(--gold-light, #e8d08a); background: none;}
:where(html.edb-5cc77621) .key-result .kr-body a{color: var(--gold-light, #e8d08a);}
:where(html.edb-5cc77621) .lecture-content .card-navy .highlight, :where(html.edb-5cc77621) .lecture-content .card-navy .hl-gold, :where(html.edb-5cc77621) .lecture-content .key-result .highlight, :where(html.edb-5cc77621) .lecture-content .key-result .hl-gold{color: #e8d08a !important;
      -webkit-text-fill-color: #e8d08a !important;
      background: none !important;
      background-image: none !important;
      -webkit-background-clip: border-box !important;
      background-clip: border-box !important;
      text-shadow: none !important;
      filter: none !important;
      mix-blend-mode: normal !important;
      opacity: 1 !important;
      padding: 0 !important;
      border-radius: 0 !important;
      font-weight: 600;}
:where(html.edb-5cc77621) .lecture-content .card-navy strong, :where(html.edb-5cc77621) .lecture-content .key-result strong, :where(html.edb-5cc77621) .lecture-content .key-result .kr-title{color: #ffffff !important;
      -webkit-text-fill-color: #ffffff !important;
      background: none !important;}
:where(html.edb-5cc77621) .lecture-content .card-navy .lecture-list, :where(html.edb-5cc77621) .lecture-content .card-navy .lecture-list li, :where(html.edb-5cc77621) .lecture-content .card-navy .lecture-list li p, :where(html.edb-5cc77621) .lecture-content .card-navy .step-list li{color: #eef2fb !important;}
:where(html.edb-5cc77621) .lecture-content .key-result .lecture-list, :where(html.edb-5cc77621) .lecture-content .key-result .lecture-list li, :where(html.edb-5cc77621) .lecture-content .key-result .lecture-list li p, :where(html.edb-5cc77621) .lecture-content .key-result .step-list li{color: #c9d6ee !important;}
:where(html.edb-5cc77621) .lecture-content .card-navy .step-list li::before, :where(html.edb-5cc77621) .lecture-content .key-result .step-list li::before{background: #2f5f92 !important; color: #ffffff !important;}
:where(html.edb-5cc77621) .key-result .kr-body{min-width: 0; flex: 1 1 auto;}
:where(html.edb-5cc77621) .two-col > *, :where(html.edb-5cc77621) .card-grid > *, :where(html.edb-5cc77621) .col-fig > *{min-width: 0;}
:where(html.edb-5cc77621) .eq-block{max-width: 100%; overflow-x: auto;}
:where(html.edb-5cc77621) .eq-block .math{max-width: 100%;}
:where(html.edb-5cc77621) mjx-container[display="true"]{max-width: 100%; overflow-x: auto;
                                       overflow-y: hidden; padding-bottom: 0.15rem;}
:where(html.edb-5cc77621) .data-table mjx-container{max-width: 100%;}
:where(html.edb-5cc77621) .lecture-content{overflow-wrap: break-word;}
:where(html.edb-5cc77621) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-5cc77621) .col-fig{display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.25rem;
      margin: 1rem 0;}
:where(html.edb-5cc77621) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-5cc77621) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-5cc77621) .lecture-content figure{max-width: 100%;}
:where(html.edb-5cc77621) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-5cc77621) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-5cc77621) .card .data-table-wrap{margin-top: 0.75rem;}
:where(html.edb-5cc77621) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-5cc77621) .answer > summary{cursor: pointer; list-style: none;
      padding: 0.5rem 0.8rem;
      font-family: var(--ff-mono); font-size: 0.7rem;
      letter-spacing: 0.1em; text-transform: uppercase;
      color: var(--navy);}
:where(html.edb-5cc77621) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-5cc77621) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-5cc77621) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-5cc77621) .answer > summary:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-5cc77621) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-5cc77621) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-5cc77621) .svg-fig{width: 100%; height: auto; display: block; margin: 0.5rem auto;}
:where(html.edb-5cc77621) .svg-fig text{font-family: var(--ff-body);}
:where(html.edb-5cc77621) .analogy-grid{display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 1.1rem; margin: 1.25rem 0;}
:where(html.edb-5cc77621) .analogy-grid figure{margin: 0; padding: 0.85rem 0.85rem 0.6rem; background: #fff;
      border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow-sm); text-align: center;}
:where(html.edb-5cc77621) .analogy-grid figcaption{margin-top: 0.5rem; font-size: 0.82rem; line-height: 1.45; color: var(--text-mid);}
@media (prefers-reduced-motion: reduce){
  :where(html.edb-5cc77621) .back-top{transition: none;}
  :where(html.edb-5cc77621) .back-top:hover{transform: none;}
}
:where(html.edb-039a80a4) .col-fig{display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.25rem;
      margin: 1rem 0;}
:where(html.edb-039a80a4) .col-stack{display: flex;
      flex-direction: column;
      gap: 0.75rem;
      margin: 0.75rem 0;}
:where(html.edb-039a80a4) .col-item{}
:where(html.edb-039a80a4) .eq-desc{margin-top: 0.4rem;
      font-size: 0.93rem;
      color: var(--text-mid);
      line-height: 1.6;}
:where(html.edb-039a80a4) .lecture-content .card-grid{grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));}
:where(html.edb-039a80a4) .card > .card{box-shadow:none;border:none;padding:0.5rem 0 0;background:transparent;}
:where(html.edb-039a80a4) .card > .card-grid{margin-top:0.75rem;}
:where(html.edb-039a80a4) .card .eq-block{border-radius:var(--radius);}
:where(html.edb-039a80a4) .card .data-table-wrap{margin-top:0.75rem;}
:where(html.edb-039a80a4) .lecture-content img{max-width:100%;height:auto;display:block;}
:where(html.edb-039a80a4) .lecture-content figure{max-width:100%;}
:where(html.edb-806fea36) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-806fea36) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-806fea36) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-806fea36) .back-top:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-806fea36) #header-container{min-height: 68px;}
:where(html.edb-806fea36) #footer-container{min-height: 220px;}
:where(html.edb-806fea36) .ed-header ul:not(.dropdown-menu), :where(html.edb-806fea36) .footer ul, :where(html.edb-806fea36) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-806fea36) .ed-header li, :where(html.edb-806fea36) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-806fea36) .ed-header a, :where(html.edb-806fea36) .footer a{text-decoration: none;}
:where(html.edb-806fea36) .ed-header p, :where(html.edb-806fea36) .footer p{max-width: none;}
:where(html.edb-806fea36) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-806fea36) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-806fea36) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-806fea36) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-806fea36) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-806fea36) .card-navy{color: #eef2fb;}
:where(html.edb-806fea36) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-806fea36) .card-navy strong{color: #ffffff;}
:where(html.edb-806fea36) .card-navy em{color: #d9e2f5;}
:where(html.edb-806fea36) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-806fea36) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-806fea36) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-806fea36) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-806fea36) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-806fea36) .key-result .eq-block, :where(html.edb-806fea36) .card-navy .eq-block{background: rgba(255, 255, 255, 0.07);
      border-left: 4px solid var(--gold, #c9a84c);
      margin: 0.85rem 0;}
:where(html.edb-806fea36) .key-result .eq-block .math, :where(html.edb-806fea36) .card-navy .eq-block .math{color: #ffe1a3;}
:where(html.edb-806fea36) .key-result .eq-block mjx-container, :where(html.edb-806fea36) .card-navy .eq-block mjx-container{color: #ffe1a3 !important;}
:where(html.edb-806fea36) .key-result .kr-body strong{color: #ffffff;}
:where(html.edb-806fea36) .key-result .kr-body em{color: #d9e2f5;}
:where(html.edb-806fea36) .key-result .kr-body .highlight{color: var(--gold-light, #e8d08a); background: none;}
:where(html.edb-806fea36) .key-result .kr-body a{color: var(--gold-light, #e8d08a);}
:where(html.edb-806fea36) .lecture-content .card-navy .highlight, :where(html.edb-806fea36) .lecture-content .card-navy .hl-gold, :where(html.edb-806fea36) .lecture-content .key-result .highlight, :where(html.edb-806fea36) .lecture-content .key-result .hl-gold{color: #e8d08a !important;
      -webkit-text-fill-color: #e8d08a !important;
      background: none !important;
      background-image: none !important;
      -webkit-background-clip: border-box !important;
      background-clip: border-box !important;
      text-shadow: none !important;
      filter: none !important;
      mix-blend-mode: normal !important;
      opacity: 1 !important;
      padding: 0 !important;
      border-radius: 0 !important;
      font-weight: 600;}
:where(html.edb-806fea36) .lecture-content .card-navy strong, :where(html.edb-806fea36) .lecture-content .key-result strong, :where(html.edb-806fea36) .lecture-content .key-result .kr-title{color: #ffffff !important;
      -webkit-text-fill-color: #ffffff !important;
      background: none !important;}
:where(html.edb-806fea36) .lecture-content .card-navy .lecture-list, :where(html.edb-806fea36) .lecture-content .card-navy .lecture-list li, :where(html.edb-806fea36) .lecture-content .card-navy .lecture-list li p, :where(html.edb-806fea36) .lecture-content .card-navy .step-list li{color: #eef2fb !important;}
:where(html.edb-806fea36) .lecture-content .key-result .lecture-list, :where(html.edb-806fea36) .lecture-content .key-result .lecture-list li, :where(html.edb-806fea36) .lecture-content .key-result .lecture-list li p, :where(html.edb-806fea36) .lecture-content .key-result .step-list li{color: #c9d6ee !important;}
:where(html.edb-806fea36) .lecture-content .card-navy .step-list li::before, :where(html.edb-806fea36) .lecture-content .key-result .step-list li::before{background: #2f5f92 !important; color: #ffffff !important;}
:where(html.edb-806fea36) .key-result .kr-body{min-width: 0; flex: 1 1 auto;}
:where(html.edb-806fea36) .two-col > *, :where(html.edb-806fea36) .card-grid > *, :where(html.edb-806fea36) .col-fig > *{min-width: 0;}
:where(html.edb-806fea36) .eq-block{max-width: 100%; overflow-x: auto;}
:where(html.edb-806fea36) .eq-block .math{max-width: 100%;}
:where(html.edb-806fea36) mjx-container[display="true"]{max-width: 100%; overflow-x: auto;
                                       overflow-y: hidden; padding-bottom: 0.15rem;}
:where(html.edb-806fea36) .data-table mjx-container{max-width: 100%;}
:where(html.edb-806fea36) .lecture-content{overflow-wrap: break-word;}
:where(html.edb-806fea36) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-806fea36) .col-fig{display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.25rem;
      margin: 1rem 0;}
:where(html.edb-806fea36) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-806fea36) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-806fea36) .lecture-content figure{max-width: 100%;}
:where(html.edb-806fea36) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-806fea36) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-806fea36) .card .data-table-wrap{margin-top: 0.75rem;}
:where(html.edb-806fea36) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-806fea36) .answer > summary{cursor: pointer; list-style: none;
      padding: 0.5rem 0.8rem;
      font-family: var(--ff-mono); font-size: 0.7rem;
      letter-spacing: 0.1em; text-transform: uppercase;
      color: var(--navy);}
:where(html.edb-806fea36) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-806fea36) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-806fea36) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-806fea36) .answer > summary:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-806fea36) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-806fea36) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-806fea36) .svg-fig{width: 100%; height: auto; display: block; margin: 0.5rem auto;}
:where(html.edb-806fea36) .svg-fig text{font-family: var(--ff-body);}
:where(html.edb-806fea36) .analogy-grid{display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 1.1rem; margin: 1.25rem 0;}
:where(html.edb-806fea36) .analogy-grid figure{margin: 0; padding: 0.85rem 0.85rem 0.6rem; background: #fff;
      border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow-sm); text-align: center;}
:where(html.edb-806fea36) .analogy-grid figcaption{margin-top: 0.5rem; font-size: 0.82rem; line-height: 1.45; color: var(--text-mid);}
@media (prefers-reduced-motion: reduce){
  :where(html.edb-806fea36) .back-top{transition: none;}
  :where(html.edb-806fea36) .back-top:hover{transform: none;}
}

:where(html.edb-9c5cb95b) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-9c5cb95b) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-9c5cb95b) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-9c5cb95b) #header-container{min-height: 68px;}
:where(html.edb-9c5cb95b) #footer-container{min-height: 220px;}
:where(html.edb-9c5cb95b) .ed-header ul:not(.dropdown-menu), :where(html.edb-9c5cb95b) .footer ul, :where(html.edb-9c5cb95b) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-9c5cb95b) .ed-header li, :where(html.edb-9c5cb95b) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-9c5cb95b) .ed-header a, :where(html.edb-9c5cb95b) .footer a{text-decoration: none;}
:where(html.edb-9c5cb95b) .ed-header p, :where(html.edb-9c5cb95b) .footer p{max-width: none;}
:where(html.edb-9c5cb95b) .toc-box{max-height: calc(100vh - 96px); overflow-y: auto;}
:where(html.edb-9c5cb95b) .page-layout{display: grid; grid-template-columns: 260px minmax(0,1fr); gap: 2rem; align-items: start;}
:where(html.edb-9c5cb95b) .toc-sidebar{position: sticky; top: 72px; align-self: start; height: fit-content;}
:where(html.edb-9c5cb95b) .lecture-content{min-width: 0;}
@media (max-width: 800px){
  :where(html.edb-9c5cb95b) .page-layout{grid-template-columns: 1fr; gap: 0;}
  :where(html.edb-9c5cb95b) .toc-sidebar{position: static; height: auto;}
  :where(html.edb-9c5cb95b) .toc-box{max-height: none; overflow: visible;}
}
:where(html.edb-9c5cb95b) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-9c5cb95b) .answer > summary{cursor: pointer; list-style: none; padding: 0.5rem 0.8rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--navy);}
:where(html.edb-9c5cb95b) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-9c5cb95b) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-9c5cb95b) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-9c5cb95b) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-9c5cb95b) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-9c5cb95b) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-9c5cb95b) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-9c5cb95b) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-9c5cb95b) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-9c5cb95b) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-9c5cb95b) .card-navy{color: #eef2fb;}
:where(html.edb-9c5cb95b) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-9c5cb95b) .card-navy strong{color: #ffffff;}
:where(html.edb-9c5cb95b) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-9c5cb95b) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-9c5cb95b) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-9c5cb95b) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-9c5cb95b) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-9c5cb95b) .card-navy .eq-block .math, :where(html.edb-9c5cb95b) .card-navy .eq-block mjx-container, :where(html.edb-9c5cb95b) .card-navy .eq-block mjx-container *{color: var(--text-dark) !important;}
:where(html.edb-9c5cb95b) .card-navy .eq-block .eq-desc{color: var(--text-mid);}
:where(html.edb-9c5cb95b) .chip{display: inline-flex; align-items: center; gap: 0.3rem; background: rgba(26,58,92,0.1); border: 1px solid rgba(26,58,92,0.2); color: var(--navy-mid); font-family: var(--ff-mono); font-size: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 999px;}
:where(html.edb-9c5cb95b) .chip-gold{background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.4); color: #7a5c10;}
:where(html.edb-9c5cb95b) .chip-red{background: rgba(192,57,43,0.1);   border-color: rgba(192,57,43,0.3);  color: var(--red);}
:where(html.edb-9c5cb95b) .chip-green{background: rgba(26,107,60,0.1);   border-color: rgba(26,107,60,0.3);  color: var(--green);}
:where(html.edb-9c5cb95b) .card-alert{border-left: 4px solid var(--red);}
:where(html.edb-9c5cb95b) .tut-intro{background: linear-gradient(135deg, var(--cream) 0%, #efe9dd 100%); border: 1px solid var(--border); border-left: 4px solid var(--gold); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.6rem; margin-bottom: 2.5rem;}
:where(html.edb-9c5cb95b) .tut-intro h2{font-family: var(--ff-display); color: var(--navy); font-size: 1.3rem; margin-bottom: 0.45rem;}
:where(html.edb-9c5cb95b) .tut-intro p{font-size: 0.94rem; color: var(--text-mid); margin: 0;}
:where(html.edb-9c5cb95b) .tut-intro .tut-meta{margin-top: 0.65rem; font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--text-light);}
:where(html.edb-9c5cb95b) .problem-block{margin: 0 0 3.5rem; scroll-margin-top: 80px;}
:where(html.edb-9c5cb95b) .problem-block:not(:first-of-type){padding-top: 2.75rem; border-top: 2px solid var(--border);}
:where(html.edb-9c5cb95b) .pb-header{display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--border);}
:where(html.edb-9c5cb95b) .pb-badge{font-family: var(--ff-display); font-weight: 700; font-size: 1.5rem; line-height: 1.15; color: var(--navy); display: inline-flex; align-items: center;}
:where(html.edb-9c5cb95b) .pb-badge::before{content: ""; width: 5px; height: 1.35rem; background: var(--gold); border-radius: 2px; margin-right: 0.6rem;}
:where(html.edb-9c5cb95b) .pb-topic{margin-left: auto; font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: var(--steel); background: rgba(74,127,165,0.1); border: 1px solid rgba(74,127,165,0.25); padding: 0.22rem 0.6rem; border-radius: 999px;}
:where(html.edb-9c5cb95b) .pb-header .chip{font-size: 0.62rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; padding: 0.18rem 0.55rem;}
:where(html.edb-9c5cb95b) .problem-statement{background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--steel); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.15rem 1.4rem; box-shadow: var(--shadow-sm);}
:where(html.edb-9c5cb95b) .problem-statement > *:first-child{margin-top: 0;}
:where(html.edb-9c5cb95b) .problem-statement > *:last-child{margin-bottom: 0;}
:where(html.edb-9c5cb95b) .problem-statement p{font-size: 0.97rem; color: var(--text-dark); margin-bottom: 0.55rem; line-height: 1.7;}
:where(html.edb-9c5cb95b) .problem-statement ol, :where(html.edb-9c5cb95b) .problem-statement ul.sub-parts{margin: 0.5rem 0 0.25rem 1.4rem; font-size: 0.95rem; color: var(--text-dark);}
:where(html.edb-9c5cb95b) .problem-statement ol li, :where(html.edb-9c5cb95b) .problem-statement ul.sub-parts li{margin-bottom: 0.25rem;}
:where(html.edb-9c5cb95b) .solution-block{margin-top: 1.5rem; background: var(--warm-white); border: 1px solid var(--border); border-left: 5px solid var(--green); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.5rem 1.5rem; box-shadow: var(--shadow-sm); counter-reset: solstep; scroll-margin-top: 80px;}
:where(html.edb-9c5cb95b) .solution-label{display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--ff-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; background: var(--green); padding: 0.35rem 0.95rem; border-radius: 999px; margin-bottom: 1.15rem;}
:where(html.edb-9c5cb95b) .sol-step{position: relative; padding-left: 2rem; margin-bottom: 1.2rem;}
:where(html.edb-9c5cb95b) .sol-step::before{counter-increment: solstep; content: counter(solstep); position: absolute; left: 0; top: 0.15rem; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: rgba(26,107,60,0.1); border: 1px solid rgba(26,107,60,0.3); color: var(--green); font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 700; display: flex; align-items: center; justify-content: center;}
:where(html.edb-9c5cb95b) .sol-step > p{font-size: 0.95rem; color: var(--text-mid); margin: 0 0 0.4rem; line-height: 1.75;}
:where(html.edb-9c5cb95b) .sol-step .eq-block{margin: 0.5rem 0 0.6rem;}
:where(html.edb-9c5cb95b) .solution-block > .insight-strip{margin: 1.25rem 0 0;}
:where(html.edb-9c5cb95b) .answer-badge{display: flex; align-items: baseline; gap: 0.65rem; flex-wrap: wrap; margin-top: 1.5rem; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%); border-radius: var(--radius); padding: 0.85rem 1.3rem; box-shadow: var(--shadow-sm);}
:where(html.edb-9c5cb95b) .answer-badge .ab-label{font-family: var(--ff-mono); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--gold); flex-shrink: 0;}
:where(html.edb-9c5cb95b) .answer-badge .ab-value{font-family: var(--ff-body); font-size: 1.05rem; color: #fff; font-weight: 600;}
:where(html.edb-9c5cb95b) .answer-badge .ab-value .math, :where(html.edb-9c5cb95b) .answer-badge mjx-container{color: #fff !important;}
:where(html.edb-9c5cb95b) .part-tag{display: inline-block; margin-right: 0.45rem; font-family: var(--ff-mono); font-size: 0.72rem; font-weight: 700; color: var(--navy-mid); background: rgba(26,58,92,0.08); border: 1px solid rgba(26,58,92,0.18); padding: 0.05rem 0.45rem; border-radius: 4px;}
:where(html.edb-9c5cb95b) .wave-fig{background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem 1.1rem 0.7rem; margin: 1rem auto; max-width: 560px; box-shadow: var(--shadow-sm);}
:where(html.edb-9c5cb95b) .wave-fig svg{width: 100%; height: auto; display: block;}
:where(html.edb-9c5cb95b) .wave-fig figcaption{margin-top: 0.55rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--steel); text-transform: uppercase; text-align: center; line-height: 1.5;}
:where(html.edb-9c5cb95b) .fig-pair{display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1rem; margin: 1rem 0;}
:where(html.edb-9c5cb95b) .fig-pair .wave-fig{margin: 0; max-width: none;}
:where(html.edb-9c5cb95b) .video-wrap{position: relative; width: 100%; max-width: 700px; margin: 0 auto 1rem; aspect-ratio: 16 / 9; min-height: 220px; border-radius: var(--radius-lg); overflow: hidden; background: #000; border: 1px solid var(--border); box-shadow: var(--shadow-md);}
:where(html.edb-9c5cb95b) .video-wrap iframe{position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block;}
@supports (aspect-ratio: 16 / 9){
  :where(html.edb-9c5cb95b) .video-wrap{min-height: 0;}
}
@media (max-width: 640px){
  :where(html.edb-9c5cb95b) .problem-block{margin-bottom: 2.75rem;}
  :where(html.edb-9c5cb95b) .problem-block:not(:first-of-type){padding-top: 2rem;}
  :where(html.edb-9c5cb95b) .pb-badge{font-size: 1.3rem;}
  :where(html.edb-9c5cb95b) .problem-statement, :where(html.edb-9c5cb95b) .solution-block{padding-left: 1.05rem; padding-right: 1.05rem;}
  :where(html.edb-9c5cb95b) .sol-step{padding-left: 1.75rem;}
}
:where(html.edb-bfd31ba3) .eq-block .math{display:block;}
:where(html.edb-bfd31ba3) .data-table-wrap{overflow-x:auto; margin:1rem 0;}
:where(html.edb-bfd31ba3) .lecture-content .columns{display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:1.25rem; margin:.75rem 0;}
:where(html.edb-bfd31ba3) .lecture-content center{text-align:center;}
:where(html.edb-bfd31ba3) .fig-placeholder img{max-width:100%; height:auto; border-radius:var(--radius); border:1px solid var(--border); margin:.5rem auto; display:block;}
:where(html.edb-7e611896) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-7e611896) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-7e611896) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-7e611896) #header-container{min-height: 68px;}
:where(html.edb-7e611896) #footer-container{min-height: 220px;}
:where(html.edb-7e611896) .ed-header ul:not(.dropdown-menu), :where(html.edb-7e611896) .footer ul, :where(html.edb-7e611896) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-7e611896) .ed-header li, :where(html.edb-7e611896) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-7e611896) .ed-header a, :where(html.edb-7e611896) .footer a{text-decoration: none;}
:where(html.edb-7e611896) .ed-header p, :where(html.edb-7e611896) .footer p{max-width: none;}
:where(html.edb-7e611896) .toc-box{max-height: calc(100vh - 96px); overflow-y: auto;}
:where(html.edb-7e611896) .page-layout{display: grid; grid-template-columns: 260px minmax(0,1fr); gap: 2rem; align-items: start;}
:where(html.edb-7e611896) .toc-sidebar{position: sticky; top: 72px; align-self: start; height: fit-content;}
:where(html.edb-7e611896) .lecture-content{min-width: 0;}
@media (max-width: 800px){
  :where(html.edb-7e611896) .page-layout{grid-template-columns: 1fr; gap: 0;}
  :where(html.edb-7e611896) .toc-sidebar{position: static; height: auto;}
  :where(html.edb-7e611896) .toc-box{max-height: none; overflow: visible;}
}
:where(html.edb-7e611896) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-7e611896) .answer > summary{cursor: pointer; list-style: none; padding: 0.5rem 0.8rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--navy);}
:where(html.edb-7e611896) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-7e611896) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-7e611896) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-7e611896) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-7e611896) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-7e611896) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-7e611896) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-7e611896) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-7e611896) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-7e611896) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-7e611896) .card-navy{color: #eef2fb;}
:where(html.edb-7e611896) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-7e611896) .card-navy strong{color: #ffffff;}
:where(html.edb-7e611896) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-7e611896) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-7e611896) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-7e611896) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-7e611896) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-7e611896) .chip{display: inline-flex; align-items: center; gap: 0.3rem; background: rgba(26,58,92,0.1); border: 1px solid rgba(26,58,92,0.2); color: var(--navy-mid); font-family: var(--ff-mono); font-size: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 999px;}
:where(html.edb-7e611896) .chip-gold{background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.4); color: #7a5c10;}
:where(html.edb-7e611896) .chip-red{background: rgba(192,57,43,0.1);   border-color: rgba(192,57,43,0.3);  color: var(--red);}
:where(html.edb-7e611896) .chip-green{background: rgba(26,107,60,0.1);   border-color: rgba(26,107,60,0.3);  color: var(--green);}
:where(html.edb-7e611896) .chip-blue{background: rgba(74,127,165,0.12); border-color: rgba(74,127,165,0.32); color: #2f5f80;}
:where(html.edb-7e611896) .card-alert{border-left: 4px solid var(--red);}
:where(html.edb-7e611896) .tut-intro{background: linear-gradient(135deg, var(--cream) 0%, #efe9dd 100%); border: 1px solid var(--border); border-left: 4px solid var(--gold); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.6rem; margin-bottom: 2.5rem;}
:where(html.edb-7e611896) .tut-intro h2{font-family: var(--ff-display); color: var(--navy); font-size: 1.3rem; margin-bottom: 0.45rem;}
:where(html.edb-7e611896) .tut-intro p{font-size: 0.94rem; color: var(--text-mid); margin: 0;}
:where(html.edb-7e611896) .tut-intro .tut-meta{margin-top: 0.65rem; font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--text-light);}
:where(html.edb-7e611896) .problem-block{margin: 0 0 3.5rem; scroll-margin-top: 80px;}
:where(html.edb-7e611896) .problem-block:not(:first-of-type){padding-top: 2.75rem; border-top: 2px solid var(--border);}
:where(html.edb-7e611896) .pb-header{display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--border);}
:where(html.edb-7e611896) .pb-badge{font-family: var(--ff-display); font-weight: 700; font-size: 1.5rem; line-height: 1.15; color: var(--navy); display: inline-flex; align-items: center;}
:where(html.edb-7e611896) .pb-badge::before{content: ""; width: 5px; height: 1.35rem; background: var(--gold); border-radius: 2px; margin-right: 0.6rem;}
:where(html.edb-7e611896) .pb-topic{margin-left: auto; font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: var(--steel); background: rgba(74,127,165,0.1); border: 1px solid rgba(74,127,165,0.25); padding: 0.22rem 0.6rem; border-radius: 999px;}
:where(html.edb-7e611896) .pb-header .chip{font-size: 0.62rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; padding: 0.18rem 0.55rem;}
:where(html.edb-7e611896) .problem-statement{background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--steel); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.15rem 1.4rem; box-shadow: var(--shadow-sm);}
:where(html.edb-7e611896) .problem-statement > *:first-child{margin-top: 0;}
:where(html.edb-7e611896) .problem-statement > *:last-child{margin-bottom: 0;}
:where(html.edb-7e611896) .problem-statement p{font-size: 0.97rem; color: var(--text-dark); margin-bottom: 0.55rem; line-height: 1.7;}
:where(html.edb-7e611896) .problem-statement ol, :where(html.edb-7e611896) .problem-statement ul.sub-parts{margin: 0.5rem 0 0.25rem 1.4rem; font-size: 0.95rem; color: var(--text-dark);}
:where(html.edb-7e611896) .problem-statement ol li, :where(html.edb-7e611896) .problem-statement ul.sub-parts li{margin-bottom: 0.25rem;}
:where(html.edb-7e611896) .solution-block{margin-top: 1.5rem; background: var(--warm-white); border: 1px solid var(--border); border-left: 5px solid var(--green); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.5rem 1.5rem; box-shadow: var(--shadow-sm); counter-reset: solstep; scroll-margin-top: 80px;}
:where(html.edb-7e611896) .solution-label{display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--ff-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; background: var(--green); padding: 0.35rem 0.95rem; border-radius: 999px; margin-bottom: 1.15rem;}
:where(html.edb-7e611896) .sol-step{position: relative; padding-left: 2rem; margin-bottom: 1.2rem;}
:where(html.edb-7e611896) .sol-step::before{counter-increment: solstep; content: counter(solstep); position: absolute; left: 0; top: 0.15rem; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: rgba(26,107,60,0.1); border: 1px solid rgba(26,107,60,0.3); color: var(--green); font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 700; display: flex; align-items: center; justify-content: center;}
:where(html.edb-7e611896) .sol-step > p{font-size: 0.95rem; color: var(--text-mid); margin: 0 0 0.4rem; line-height: 1.75;}
:where(html.edb-7e611896) .sol-step .eq-block{margin: 0.5rem 0 0.6rem;}
:where(html.edb-7e611896) .solution-block > .insight-strip{margin: 1.25rem 0 0;}
:where(html.edb-7e611896) .answer-badge{display: flex; align-items: baseline; gap: 0.65rem; flex-wrap: wrap; margin-top: 1.5rem; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%); border-radius: var(--radius); padding: 0.85rem 1.3rem; box-shadow: var(--shadow-sm);}
:where(html.edb-7e611896) .answer-badge .ab-label{font-family: var(--ff-mono); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--gold); flex-shrink: 0;}
:where(html.edb-7e611896) .answer-badge .ab-value{font-family: var(--ff-body); font-size: 1.05rem; color: #fff; font-weight: 600;}
:where(html.edb-7e611896) .answer-badge .ab-value .math, :where(html.edb-7e611896) .answer-badge mjx-container{color: #fff !important;}
:where(html.edb-7e611896) .part-tag{display: inline-block; margin-right: 0.45rem; font-family: var(--ff-mono); font-size: 0.72rem; font-weight: 700; color: var(--navy-mid); background: rgba(26,58,92,0.08); border: 1px solid rgba(26,58,92,0.18); padding: 0.05rem 0.45rem; border-radius: 4px;}
:where(html.edb-7e611896) .wave-fig{background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem 1.1rem 0.7rem; margin: 1rem auto; max-width: 560px; box-shadow: var(--shadow-sm);}
:where(html.edb-7e611896) .wave-fig svg{width: 100%; height: auto; display: block;}
:where(html.edb-7e611896) .wave-fig figcaption{margin-top: 0.55rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--steel); text-transform: uppercase; text-align: center; line-height: 1.5;}
:where(html.edb-7e611896) .fig-pair{display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1rem; margin: 1rem 0;}
:where(html.edb-7e611896) .fig-pair .wave-fig{margin: 0; max-width: none;}
:where(html.edb-7e611896) .video-wrap{position: relative; width: 100%; max-width: 700px; margin: 0 auto 1rem; aspect-ratio: 16 / 9; min-height: 220px; border-radius: var(--radius-lg); overflow: hidden; background: #000; border: 1px solid var(--border); box-shadow: var(--shadow-md);}
:where(html.edb-7e611896) .video-wrap iframe{position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block;}
@supports (aspect-ratio: 16 / 9){
  :where(html.edb-7e611896) .video-wrap{min-height: 0;}
}
@media (max-width: 640px){
  :where(html.edb-7e611896) .problem-block{margin-bottom: 2.75rem;}
  :where(html.edb-7e611896) .problem-block:not(:first-of-type){padding-top: 2rem;}
  :where(html.edb-7e611896) .pb-badge{font-size: 1.3rem;}
  :where(html.edb-7e611896) .problem-statement, :where(html.edb-7e611896) .solution-block{padding-left: 1.05rem; padding-right: 1.05rem;}
  :where(html.edb-7e611896) .sol-step{padding-left: 1.75rem;}
}
:where(html.edb-128a1fcd) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-128a1fcd) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-128a1fcd) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-128a1fcd) #header-container{min-height: 68px;}
:where(html.edb-128a1fcd) #footer-container{min-height: 220px;}
:where(html.edb-128a1fcd) .ed-header ul:not(.dropdown-menu), :where(html.edb-128a1fcd) .footer ul, :where(html.edb-128a1fcd) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-128a1fcd) .ed-header li, :where(html.edb-128a1fcd) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-128a1fcd) .ed-header a, :where(html.edb-128a1fcd) .footer a{text-decoration: none;}
:where(html.edb-128a1fcd) .ed-header p, :where(html.edb-128a1fcd) .footer p{max-width: none;}
:where(html.edb-128a1fcd) .toc-box{max-height: calc(100vh - 96px); overflow-y: auto;}
:where(html.edb-128a1fcd) .page-layout{display: grid; grid-template-columns: 260px minmax(0,1fr); gap: 2rem; align-items: start;}
:where(html.edb-128a1fcd) .toc-sidebar{position: sticky; top: 72px; align-self: start; height: fit-content;}
:where(html.edb-128a1fcd) .lecture-content{min-width: 0;}
@media (max-width: 800px){
  :where(html.edb-128a1fcd) .page-layout{grid-template-columns: 1fr; gap: 0;}
  :where(html.edb-128a1fcd) .toc-sidebar{position: static; height: auto;}
  :where(html.edb-128a1fcd) .toc-box{max-height: none; overflow: visible;}
}
:where(html.edb-128a1fcd) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-128a1fcd) .answer > summary{cursor: pointer; list-style: none; padding: 0.5rem 0.8rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--navy);}
:where(html.edb-128a1fcd) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-128a1fcd) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-128a1fcd) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-128a1fcd) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-128a1fcd) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-128a1fcd) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-128a1fcd) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-128a1fcd) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-128a1fcd) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-128a1fcd) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-128a1fcd) .card-navy{color: #eef2fb;}
:where(html.edb-128a1fcd) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-128a1fcd) .card-navy strong{color: #ffffff;}
:where(html.edb-128a1fcd) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-128a1fcd) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-128a1fcd) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-128a1fcd) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-128a1fcd) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-128a1fcd) .chip{display: inline-flex; align-items: center; gap: 0.3rem; background: rgba(26,58,92,0.1); border: 1px solid rgba(26,58,92,0.2); color: var(--navy-mid); font-family: var(--ff-mono); font-size: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 999px;}
:where(html.edb-128a1fcd) .chip-gold{background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.4); color: #7a5c10;}
:where(html.edb-128a1fcd) .chip-red{background: rgba(192,57,43,0.1);   border-color: rgba(192,57,43,0.3);  color: var(--red);}
:where(html.edb-128a1fcd) .chip-green{background: rgba(26,107,60,0.1);   border-color: rgba(26,107,60,0.3);  color: var(--green);}
:where(html.edb-128a1fcd) .chip-blue{background: rgba(74,127,165,0.12); border-color: rgba(74,127,165,0.32); color: #2f5f80;}
:where(html.edb-128a1fcd) .card-alert{border-left: 4px solid var(--red);}
:where(html.edb-128a1fcd) .tut-intro{background: linear-gradient(135deg, var(--cream) 0%, #efe9dd 100%); border: 1px solid var(--border); border-left: 4px solid var(--gold); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.6rem; margin-bottom: 2.5rem;}
:where(html.edb-128a1fcd) .tut-intro h2{font-family: var(--ff-display); color: var(--navy); font-size: 1.3rem; margin-bottom: 0.45rem;}
:where(html.edb-128a1fcd) .tut-intro p{font-size: 0.94rem; color: var(--text-mid); margin: 0;}
:where(html.edb-128a1fcd) .tut-intro .tut-meta{margin-top: 0.65rem; font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--text-light);}
:where(html.edb-128a1fcd) .problem-block{margin: 0 0 3.5rem; scroll-margin-top: 80px;}
:where(html.edb-128a1fcd) .problem-block:not(:first-of-type){padding-top: 2.75rem; border-top: 2px solid var(--border);}
:where(html.edb-128a1fcd) .pb-header{display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--border);}
:where(html.edb-128a1fcd) .pb-badge{font-family: var(--ff-display); font-weight: 700; font-size: 1.5rem; line-height: 1.15; color: var(--navy); display: inline-flex; align-items: center;}
:where(html.edb-128a1fcd) .pb-badge::before{content: ""; width: 5px; height: 1.35rem; background: var(--gold); border-radius: 2px; margin-right: 0.6rem;}
:where(html.edb-128a1fcd) .pb-topic{margin-left: auto; font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: var(--steel); background: rgba(74,127,165,0.1); border: 1px solid rgba(74,127,165,0.25); padding: 0.22rem 0.6rem; border-radius: 999px;}
:where(html.edb-128a1fcd) .pb-header .chip{font-size: 0.62rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; padding: 0.18rem 0.55rem;}
:where(html.edb-128a1fcd) .problem-statement{background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--steel); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.15rem 1.4rem; box-shadow: var(--shadow-sm);}
:where(html.edb-128a1fcd) .problem-statement > *:first-child{margin-top: 0;}
:where(html.edb-128a1fcd) .problem-statement > *:last-child{margin-bottom: 0;}
:where(html.edb-128a1fcd) .problem-statement p{font-size: 0.97rem; color: var(--text-dark); margin-bottom: 0.55rem; line-height: 1.7;}
:where(html.edb-128a1fcd) .problem-statement ol, :where(html.edb-128a1fcd) .problem-statement ul.sub-parts{margin: 0.5rem 0 0.25rem 1.4rem; font-size: 0.95rem; color: var(--text-dark);}
:where(html.edb-128a1fcd) .problem-statement ol li, :where(html.edb-128a1fcd) .problem-statement ul.sub-parts li{margin-bottom: 0.25rem;}
:where(html.edb-128a1fcd) .solution-block{margin-top: 1.5rem; background: var(--warm-white); border: 1px solid var(--border); border-left: 5px solid var(--green); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.5rem 1.5rem; box-shadow: var(--shadow-sm); counter-reset: solstep; scroll-margin-top: 80px;}
:where(html.edb-128a1fcd) .solution-label{display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--ff-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; background: var(--green); padding: 0.35rem 0.95rem; border-radius: 999px; margin-bottom: 1.15rem;}
:where(html.edb-128a1fcd) .sol-step{position: relative; padding-left: 2rem; margin-bottom: 1.2rem;}
:where(html.edb-128a1fcd) .sol-step::before{counter-increment: solstep; content: counter(solstep); position: absolute; left: 0; top: 0.15rem; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: rgba(26,107,60,0.1); border: 1px solid rgba(26,107,60,0.3); color: var(--green); font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 700; display: flex; align-items: center; justify-content: center;}
:where(html.edb-128a1fcd) .sol-step > p{font-size: 0.95rem; color: var(--text-mid); margin: 0 0 0.4rem; line-height: 1.75;}
:where(html.edb-128a1fcd) .sol-step .eq-block{margin: 0.5rem 0 0.6rem;}
:where(html.edb-128a1fcd) .solution-block > .insight-strip{margin: 1.25rem 0 0;}
:where(html.edb-128a1fcd) .answer-badge{display: flex; align-items: baseline; gap: 0.65rem; flex-wrap: wrap; margin-top: 1.5rem; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%); border-radius: var(--radius); padding: 0.85rem 1.3rem; box-shadow: var(--shadow-sm);}
:where(html.edb-128a1fcd) .answer-badge .ab-label{font-family: var(--ff-mono); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--gold); flex-shrink: 0;}
:where(html.edb-128a1fcd) .answer-badge .ab-value{font-family: var(--ff-body); font-size: 1.05rem; color: #fff; font-weight: 600;}
:where(html.edb-128a1fcd) .answer-badge .ab-value .math, :where(html.edb-128a1fcd) .answer-badge mjx-container{color: #fff !important;}
:where(html.edb-128a1fcd) .part-tag{display: inline-block; margin-right: 0.45rem; font-family: var(--ff-mono); font-size: 0.72rem; font-weight: 700; color: var(--navy-mid); background: rgba(26,58,92,0.08); border: 1px solid rgba(26,58,92,0.18); padding: 0.05rem 0.45rem; border-radius: 4px;}
:where(html.edb-128a1fcd) .wave-fig{background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem 1.1rem 0.7rem; margin: 1rem auto; max-width: 560px; box-shadow: var(--shadow-sm);}
:where(html.edb-128a1fcd) .wave-fig svg{width: 100%; height: auto; display: block;}
:where(html.edb-128a1fcd) .wave-fig figcaption{margin-top: 0.55rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--steel); text-transform: uppercase; text-align: center; line-height: 1.5;}
:where(html.edb-128a1fcd) .fig-pair{display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1rem; margin: 1rem 0;}
:where(html.edb-128a1fcd) .fig-pair .wave-fig{margin: 0; max-width: none;}
@media (max-width: 640px){
  :where(html.edb-128a1fcd) .problem-block{margin-bottom: 2.75rem;}
  :where(html.edb-128a1fcd) .problem-block:not(:first-of-type){padding-top: 2rem;}
  :where(html.edb-128a1fcd) .pb-badge{font-size: 1.3rem;}
  :where(html.edb-128a1fcd) .problem-statement, :where(html.edb-128a1fcd) .solution-block{padding-left: 1.05rem; padding-right: 1.05rem;}
  :where(html.edb-128a1fcd) .sol-step{padding-left: 1.75rem;}
}
:where(html.edb-bda34db6) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-bda34db6) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-bda34db6) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-bda34db6) .card-navy{color: #eef2fb;}
:where(html.edb-bda34db6) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-bda34db6) .card-navy strong{color: #ffffff;}
:where(html.edb-bda34db6) .card-navy em{color: #d9e2f5;}
:where(html.edb-bda34db6) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-bda34db6) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-bda34db6) .card-navy .lo-intro{margin: 0.15rem 0 0.6rem; opacity: 0.92;}
:where(html.edb-bda34db6) .card-navy .lo-list{margin: 0; padding-left: 1.4rem;}
:where(html.edb-bda34db6) .card-navy .lo-list li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-bda34db6) .card-navy .lo-list li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-59209164) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-59209164) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-59209164) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-59209164) .card-navy{background: var(--navy-deep, #0d1b2a); color: #eef2fb;}
:where(html.edb-59209164) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-59209164) .card-navy p, :where(html.edb-59209164) .card-navy ul, :where(html.edb-59209164) .card-navy ol, :where(html.edb-59209164) .card-navy li{color: #eef2fb;}
:where(html.edb-59209164) .card-navy li::marker{color: var(--gold-light, #ffd98a);}
:where(html.edb-59209164) .card-navy a{color: #ffe1a3; text-decoration: underline;}
:where(html.edb-59209164) .card-navy strong{color: #ffffff;}
:where(html.edb-59209164) .card-navy em{color: #d9e2f5;}
:where(html.edb-59209164) .card-navy .eq-inline{color: #ffe14a !important;          
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 225, 74, 0.30);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-59209164) .card-navy mjx-container, :where(html.edb-59209164) .card-navy mjx-container *{color: #ffe14a !important;}
:where(html.edb-59209164) .card-navy .lo-intro{margin: 0.15rem 0 0.6rem; opacity: 0.92;}
:where(html.edb-59209164) .card-navy .lo-list{margin: 0; padding-left: 1.4rem;}
:where(html.edb-59209164) .card-navy .lo-list li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-59209164) .card-navy .lo-list li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-59209164) .phys-table{width: 100%; border-collapse: collapse; margin: 0.25rem 0 0.4rem; font-size: 0.95rem;}
:where(html.edb-59209164) .phys-table caption{caption-side: top; text-align: left; font-weight: 700; color: var(--navy-mid); margin-bottom: 0.4rem;}
:where(html.edb-59209164) .phys-table th, :where(html.edb-59209164) .phys-table td{padding: 0.5rem 0.7rem; border-bottom: 1px solid rgba(13,27,42,0.12); text-align: left;}
:where(html.edb-59209164) .phys-table thead th{border-bottom: 2px solid rgba(13,27,42,0.28);}
:where(html.edb-59209164) .phys-table td.num, :where(html.edb-59209164) .phys-table th.num{text-align: right; font-variant-numeric: tabular-nums;}
:where(html.edb-59209164) .phys-table tbody tr:nth-child(odd){background: rgba(13,27,42,0.03);}
:where(html.edb-7659437d) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-7659437d) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-7659437d) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-7659437d) .back-top:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-7659437d) #header-container{min-height: 68px;}
:where(html.edb-7659437d) #footer-container{min-height: 220px;}
:where(html.edb-7659437d) .ed-header ul:not(.dropdown-menu), :where(html.edb-7659437d) .footer ul, :where(html.edb-7659437d) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-7659437d) .ed-header li, :where(html.edb-7659437d) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-7659437d) .ed-header a, :where(html.edb-7659437d) .footer a{text-decoration: none;}
:where(html.edb-7659437d) .ed-header p, :where(html.edb-7659437d) .footer p{max-width: none;}
:where(html.edb-7659437d) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-7659437d) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-7659437d) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-7659437d) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-7659437d) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-7659437d) .card-navy{color: #eef2fb;}
:where(html.edb-7659437d) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-7659437d) .card-navy strong{color: #ffffff;}
:where(html.edb-7659437d) .card-navy em{color: #d9e2f5;}
:where(html.edb-7659437d) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-7659437d) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-7659437d) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-7659437d) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-7659437d) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-7659437d) .key-result .eq-block, :where(html.edb-7659437d) .card-navy .eq-block{background: rgba(255, 255, 255, 0.07);
      border-left: 4px solid var(--gold, #c9a84c);
      margin: 0.85rem 0;}
:where(html.edb-7659437d) .key-result .eq-block .math, :where(html.edb-7659437d) .card-navy .eq-block .math{color: #ffe1a3;}
:where(html.edb-7659437d) .key-result .eq-block mjx-container, :where(html.edb-7659437d) .card-navy .eq-block mjx-container{color: #ffe1a3 !important;}
:where(html.edb-7659437d) .key-result .kr-body strong{color: #ffffff;}
:where(html.edb-7659437d) .key-result .kr-body em{color: #d9e2f5;}
:where(html.edb-7659437d) .key-result .kr-body .highlight{color: var(--gold-light, #e8d08a); background: none;}
:where(html.edb-7659437d) .key-result .kr-body a{color: var(--gold-light, #e8d08a);}
:where(html.edb-7659437d) .lecture-content .card-navy .highlight, :where(html.edb-7659437d) .lecture-content .card-navy .hl-gold, :where(html.edb-7659437d) .lecture-content .key-result .highlight, :where(html.edb-7659437d) .lecture-content .key-result .hl-gold{color: #e8d08a !important;
      -webkit-text-fill-color: #e8d08a !important;
      background: none !important;
      background-image: none !important;
      -webkit-background-clip: border-box !important;
      background-clip: border-box !important;
      text-shadow: none !important;
      filter: none !important;
      mix-blend-mode: normal !important;
      opacity: 1 !important;
      padding: 0 !important;
      border-radius: 0 !important;
      font-weight: 600;}
:where(html.edb-7659437d) .lecture-content .card-navy strong, :where(html.edb-7659437d) .lecture-content .key-result strong, :where(html.edb-7659437d) .lecture-content .key-result .kr-title{color: #ffffff !important;
      -webkit-text-fill-color: #ffffff !important;
      background: none !important;}
:where(html.edb-7659437d) .lecture-content .card-navy .lecture-list, :where(html.edb-7659437d) .lecture-content .card-navy .lecture-list li, :where(html.edb-7659437d) .lecture-content .card-navy .lecture-list li p, :where(html.edb-7659437d) .lecture-content .card-navy .step-list li{color: #eef2fb !important;}
:where(html.edb-7659437d) .lecture-content .key-result .lecture-list, :where(html.edb-7659437d) .lecture-content .key-result .lecture-list li, :where(html.edb-7659437d) .lecture-content .key-result .lecture-list li p, :where(html.edb-7659437d) .lecture-content .key-result .step-list li{color: #c9d6ee !important;}
:where(html.edb-7659437d) .lecture-content .card-navy .step-list li::before, :where(html.edb-7659437d) .lecture-content .key-result .step-list li::before{background: #2f5f92 !important; color: #ffffff !important;}
:where(html.edb-7659437d) .key-result .kr-body{min-width: 0; flex: 1 1 auto;}
:where(html.edb-7659437d) .two-col > *, :where(html.edb-7659437d) .card-grid > *, :where(html.edb-7659437d) .col-fig > *{min-width: 0;}
:where(html.edb-7659437d) .eq-block{max-width: 100%; overflow-x: auto;}
:where(html.edb-7659437d) .eq-block .math{max-width: 100%;}
:where(html.edb-7659437d) mjx-container[display="true"]{max-width: 100%; overflow-x: auto;
                                       overflow-y: hidden; padding-bottom: 0.15rem;}
:where(html.edb-7659437d) .data-table mjx-container{max-width: 100%;}
:where(html.edb-7659437d) .lecture-content{overflow-wrap: break-word;}
:where(html.edb-7659437d) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-7659437d) .col-fig{display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.25rem;
      margin: 1rem 0;}
:where(html.edb-7659437d) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-7659437d) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-7659437d) .lecture-content figure{max-width: 100%;}
:where(html.edb-7659437d) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-7659437d) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-7659437d) .card .data-table-wrap{margin-top: 0.75rem;}
:where(html.edb-7659437d) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-7659437d) .answer > summary{cursor: pointer; list-style: none;
      padding: 0.5rem 0.8rem;
      font-family: var(--ff-mono); font-size: 0.7rem;
      letter-spacing: 0.1em; text-transform: uppercase;
      color: var(--navy);}
:where(html.edb-7659437d) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-7659437d) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-7659437d) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-7659437d) .answer > summary:focus-visible{outline: 2px solid var(--gold); outline-offset: 2px;}
:where(html.edb-7659437d) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-7659437d) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-7659437d) .svg-fig{width: 100%; height: auto; display: block; margin: 0.5rem auto;}
:where(html.edb-7659437d) .svg-fig text{font-family: var(--ff-body);}
:where(html.edb-7659437d) .analogy-grid{display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 1.1rem; margin: 1.25rem 0;}
:where(html.edb-7659437d) .analogy-grid figure{margin: 0; padding: 0.85rem 0.85rem 0.6rem; background: #fff;
      border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow-sm); text-align: center;}
:where(html.edb-7659437d) .analogy-grid figcaption{margin-top: 0.5rem; font-size: 0.82rem; line-height: 1.45; color: var(--text-mid);}
@media (prefers-reduced-motion: reduce){
  :where(html.edb-7659437d) .back-top{transition: none;}
  :where(html.edb-7659437d) .back-top:hover{transform: none;}
}
:where(html.edb-7659437d) .lecture-content pre{margin: 0.9rem 0 0.2rem;
      padding: 0.95rem 1.1rem;
      background: var(--navy, #0d1b2a);
      border-radius: var(--radius-sm, 8px);
      overflow-x: auto;
      line-height: 1.55;}
:where(html.edb-7659437d) .lecture-content pre code{display: block;
      background: none;
      padding: 0;
      color: #e8eefc;
      font-family: var(--ff-mono, ui-monospace, SFMono-Regular, Menlo, monospace);
      font-size: 0.83rem;
      white-space: pre;}
:where(html.edb-7659437d) .lecture-content :not(pre) > code{background: var(--cream, #f5f0e8);
      border: 1px solid var(--border, #e3e8ef);
      border-radius: 4px;
      padding: 0.06em 0.34em;
      font-size: 0.86em;
      color: var(--navy, #0d1b2a);}
:where(html.edb-f6712eaa) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-f6712eaa) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-f6712eaa) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-f6712eaa) #header-container{min-height: 68px;}
:where(html.edb-f6712eaa) #footer-container{min-height: 220px;}
:where(html.edb-f6712eaa) .ed-header ul:not(.dropdown-menu), :where(html.edb-f6712eaa) .footer ul, :where(html.edb-f6712eaa) .footer ol{list-style: none;
      margin: 0;
      padding-left: 0;}
:where(html.edb-f6712eaa) .ed-header li, :where(html.edb-f6712eaa) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-f6712eaa) .ed-header a, :where(html.edb-f6712eaa) .footer a{text-decoration: none;}
:where(html.edb-f6712eaa) .ed-header p, :where(html.edb-f6712eaa) .footer p{max-width: none;}
:where(html.edb-f6712eaa) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-f6712eaa) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-f6712eaa) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-f6712eaa) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-f6712eaa) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-f6712eaa) .card-navy{color: #eef2fb;}
:where(html.edb-f6712eaa) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-f6712eaa) .card-navy strong{color: #ffffff;}
:where(html.edb-f6712eaa) .card-navy em{color: #d9e2f5;}
:where(html.edb-f6712eaa) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-f6712eaa) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-f6712eaa) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-f6712eaa) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-f6712eaa) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-f6712eaa) .lec-table{width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.92rem;}
:where(html.edb-f6712eaa) .lec-table th, :where(html.edb-f6712eaa) .lec-table td{border: 1px solid var(--border, #e3e8ef); padding: 0.55rem 0.7rem; text-align: left;}
:where(html.edb-f6712eaa) .lec-table thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a); font-family: var(--ff-mono, monospace); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase;}
:where(html.edb-f6712eaa) .lec-table tbody tr:nth-child(even){background: #f6f8fb;}
:where(html.edb-f6712eaa) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-14163a09) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-14163a09) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-14163a09) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-14163a09) .card-navy{color: #eef2fb;}
:where(html.edb-14163a09) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-14163a09) .card-navy strong{color: #ffffff;}
:where(html.edb-14163a09) .card-navy em{color: #d9e2f5;}
:where(html.edb-14163a09) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-14163a09) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-14163a09) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-14163a09) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-14163a09) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-14163a09) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-14163a09) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-14163a09) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-14163a09) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-14163a09) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-14163a09) .lec-table{width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.92rem;}
:where(html.edb-14163a09) .lec-table th, :where(html.edb-14163a09) .lec-table td{border: 1px solid var(--border, #e3e8ef); padding: 0.55rem 0.7rem; text-align: left;}
:where(html.edb-14163a09) .lec-table thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a); font-family: var(--ff-mono, monospace); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase;}
:where(html.edb-14163a09) .lec-table tbody tr:nth-child(even){background: #f6f8fb;}
:where(html.edb-14163a09) .amat{font-family: var(--ff-mono, monospace); font-size: 0.9rem; text-align: center; width: auto; margin: 1.25rem auto;}
:where(html.edb-14163a09) .amat th, :where(html.edb-14163a09) .amat td{text-align: center; padding: 0.45rem 0.7rem; border: 1px solid #d6dee8;}
:where(html.edb-14163a09) .amat thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a);}
:where(html.edb-14163a09) .amat .rowhdr{background: #f2f5f9; font-weight: 700;}
:where(html.edb-14163a09) .amat .z{background: #fff3d6; font-weight: 700;}
:where(html.edb-14163a09) .amat .assign{background: #ffb703; color: #0d1b2a; font-weight: 800; border: 2px solid #0d1b2a;}
:where(html.edb-14163a09) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-891714f3) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-891714f3) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-891714f3) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-891714f3) .card-navy{color: #eef2fb;}
:where(html.edb-891714f3) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-891714f3) .card-navy strong{color: #ffffff;}
:where(html.edb-891714f3) .card-navy em{color: #d9e2f5;}
:where(html.edb-891714f3) .card-navy .eq-inline{color: #ffe1a3 !important;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 6px;
      padding: 0.02em 0.4em;}
:where(html.edb-891714f3) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-891714f3) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-891714f3) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-891714f3) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-891714f3) .diagram-figure{margin: 1.5rem 0;
      padding: 1.1rem 1rem 0.6rem;
      background: #fff;
      border: 1px solid var(--border, #e3e8ef);
      border-radius: var(--radius, 12px);
      box-shadow: var(--shadow-sm, 0 1px 2px rgba(13,27,42,.06));
      text-align: center;}
:where(html.edb-891714f3) .diagram-figure svg{max-width: 100%; height: auto;}
:where(html.edb-891714f3) .diagram-figure figcaption{margin-top: 0.55rem;
      font-family: var(--ff-mono, monospace);
      font-size: 0.72rem; letter-spacing: 0.04em;
      color: var(--steel, #5b7088); text-transform: uppercase;}
:where(html.edb-891714f3) .diagram-row{display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 1rem; margin: 1.5rem 0;}
:where(html.edb-891714f3) .diagram-row .diagram-figure{margin: 0;}
:where(html.edb-891714f3) .lec-table{width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.92rem;}
:where(html.edb-891714f3) .lec-table th, :where(html.edb-891714f3) .lec-table td{border: 1px solid var(--border, #e3e8ef); padding: 0.55rem 0.7rem; text-align: left;}
:where(html.edb-891714f3) .lec-table thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a); font-family: var(--ff-mono, monospace); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase;}
:where(html.edb-891714f3) .lec-table tbody tr:nth-child(even){background: #f6f8fb;}
:where(html.edb-891714f3) .amat{font-family: var(--ff-mono, monospace); font-size: 0.9rem; text-align: center; width: auto; margin: 1.25rem auto;}
:where(html.edb-891714f3) .amat th, :where(html.edb-891714f3) .amat td{text-align: center; padding: 0.45rem 0.7rem; border: 1px solid #d6dee8;}
:where(html.edb-891714f3) .amat thead th{background: var(--navy, #0d1b2a); color: var(--gold-light, #ffd98a);}
:where(html.edb-891714f3) .amat .rowhdr{background: #f2f5f9; font-weight: 700;}
:where(html.edb-891714f3) .amat .z{background: #fff3d6; font-weight: 700;}
:where(html.edb-891714f3) .amat .assign{background: #ffb703; color: #0d1b2a; font-weight: 800; border: 2px solid #0d1b2a;}
:where(html.edb-891714f3) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-3f691475) .back-top{position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--navy-mid); color: var(--gold-light); cursor: pointer; font-size: 1.1rem; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;}
:where(html.edb-3f691475) .back-top.show{opacity: 1; pointer-events: auto;}
:where(html.edb-3f691475) .back-top:hover{transform: translateY(-2px);}
:where(html.edb-3f691475) #header-container{min-height: 68px;}
:where(html.edb-3f691475) #footer-container{min-height: 220px;}
:where(html.edb-3f691475) .ed-header ul:not(.dropdown-menu), :where(html.edb-3f691475) .footer ul, :where(html.edb-3f691475) .footer ol{list-style: none; margin: 0; padding-left: 0;}
:where(html.edb-3f691475) .ed-header li, :where(html.edb-3f691475) .footer li{margin: 0; line-height: inherit;}
:where(html.edb-3f691475) .ed-header a, :where(html.edb-3f691475) .footer a{text-decoration: none;}
:where(html.edb-3f691475) .ed-header p, :where(html.edb-3f691475) .footer p{max-width: none;}
:where(html.edb-3f691475) .toc-box{max-height: calc(100vh - 96px); overflow-y: auto;}
:where(html.edb-3f691475) .page-layout{display: grid; grid-template-columns: 260px minmax(0,1fr); gap: 2rem; align-items: start;}
:where(html.edb-3f691475) .toc-sidebar{position: sticky; top: 72px; align-self: start; height: fit-content;}
:where(html.edb-3f691475) .lecture-content{min-width: 0;}
@media (max-width: 800px){
  :where(html.edb-3f691475) .page-layout{grid-template-columns: 1fr; gap: 0;}
  :where(html.edb-3f691475) .toc-sidebar{position: static; height: auto;}
  :where(html.edb-3f691475) .toc-box{max-height: none; overflow: visible;}
}
:where(html.edb-3f691475) .answer{margin-top: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;}
:where(html.edb-3f691475) .answer > summary{cursor: pointer; list-style: none; padding: 0.5rem 0.8rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--navy);}
:where(html.edb-3f691475) .answer > summary::-webkit-details-marker{display: none;}
:where(html.edb-3f691475) .answer > summary::before{content: "▸  "; color: var(--gold);}
:where(html.edb-3f691475) .answer[open] > summary::before{content: "▾  ";}
:where(html.edb-3f691475) .answer .answer-body{padding: 0 0.8rem 0.8rem; font-size: 0.94rem; color: var(--text-mid); line-height: 1.7;}
:where(html.edb-3f691475) .answer .answer-body .eq-block{margin: 0.5rem 0;}
:where(html.edb-3f691475) .eq-desc{margin-top: 0.4rem; font-size: 0.93rem; color: var(--text-mid); line-height: 1.6;}
:where(html.edb-3f691475) .lecture-content img{max-width: 100%; height: auto; display: block;}
:where(html.edb-3f691475) .card > .card{box-shadow: none; border: none; padding: 0.5rem 0 0; background: transparent;}
:where(html.edb-3f691475) .card .eq-block{border-radius: var(--radius);}
:where(html.edb-3f691475) .table-scroll{overflow-x: auto; -webkit-overflow-scrolling: touch;}
:where(html.edb-3f691475) .card-navy{color: #eef2fb;}
:where(html.edb-3f691475) .card-navy .card-title{color: var(--gold-light, #ffd98a);}
:where(html.edb-3f691475) .card-navy strong{color: #ffffff;}
:where(html.edb-3f691475) .card-navy mjx-container{color: #ffe1a3 !important;}
:where(html.edb-3f691475) .card-navy ul{margin: 0; padding-left: 1.4rem;}
:where(html.edb-3f691475) .card-navy ul li{margin: 0.45rem 0; line-height: 1.55;}
:where(html.edb-3f691475) .card-navy ul li::marker{color: var(--gold-light, #ffd98a); font-weight: 700;}
:where(html.edb-3f691475) .card-navy .eq-desc{color: #c9d6ee;}
:where(html.edb-3f691475) .card-navy .eq-block .math, :where(html.edb-3f691475) .card-navy .eq-block mjx-container, :where(html.edb-3f691475) .card-navy .eq-block mjx-container *{color: var(--text-dark) !important;}
:where(html.edb-3f691475) .card-navy .eq-block .eq-desc{color: var(--text-mid);}
:where(html.edb-3f691475) .chip{display: inline-flex; align-items: center; gap: 0.3rem; background: rgba(26,58,92,0.1); border: 1px solid rgba(26,58,92,0.2); color: var(--navy-mid); font-family: var(--ff-mono); font-size: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 999px;}
:where(html.edb-3f691475) .chip-gold{background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.4); color: #7a5c10;}
:where(html.edb-3f691475) .chip-red{background: rgba(192,57,43,0.1);   border-color: rgba(192,57,43,0.3);  color: var(--red);}
:where(html.edb-3f691475) .chip-green{background: rgba(26,107,60,0.1);   border-color: rgba(26,107,60,0.3);  color: var(--green);}
:where(html.edb-3f691475) .card-alert{border-left: 4px solid var(--red);}
:where(html.edb-3f691475) .tut-intro{background: linear-gradient(135deg, var(--cream) 0%, #efe9dd 100%); border: 1px solid var(--border); border-left: 4px solid var(--gold); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.6rem; margin-bottom: 2.5rem;}
:where(html.edb-3f691475) .tut-intro h2{font-family: var(--ff-display); color: var(--navy); font-size: 1.3rem; margin-bottom: 0.45rem;}
:where(html.edb-3f691475) .tut-intro p{font-size: 0.94rem; color: var(--text-mid); margin: 0;}
:where(html.edb-3f691475) .tut-intro .tut-meta{margin-top: 0.65rem; font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--text-light);}
:where(html.edb-3f691475) .problem-block{margin: 0 0 3.5rem; scroll-margin-top: 80px;}
:where(html.edb-3f691475) .problem-block:not(:first-of-type){padding-top: 2.75rem; border-top: 2px solid var(--border);}
:where(html.edb-3f691475) .pb-header{display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--border);}
:where(html.edb-3f691475) .pb-badge{font-family: var(--ff-display); font-weight: 700; font-size: 1.5rem; line-height: 1.15; color: var(--navy); display: inline-flex; align-items: center;}
:where(html.edb-3f691475) .pb-badge::before{content: ""; width: 5px; height: 1.35rem; background: var(--gold); border-radius: 2px; margin-right: 0.6rem;}
:where(html.edb-3f691475) .pb-topic{margin-left: auto; font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: var(--steel); background: rgba(74,127,165,0.1); border: 1px solid rgba(74,127,165,0.25); padding: 0.22rem 0.6rem; border-radius: 999px;}
:where(html.edb-3f691475) .pb-header .chip{font-size: 0.62rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; padding: 0.18rem 0.55rem;}
:where(html.edb-3f691475) .problem-statement{background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--steel); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.15rem 1.4rem; box-shadow: var(--shadow-sm);}
:where(html.edb-3f691475) .problem-statement > *:first-child{margin-top: 0;}
:where(html.edb-3f691475) .problem-statement > *:last-child{margin-bottom: 0;}
:where(html.edb-3f691475) .problem-statement p{font-size: 0.97rem; color: var(--text-dark); margin-bottom: 0.55rem; line-height: 1.7;}
:where(html.edb-3f691475) .problem-statement ol, :where(html.edb-3f691475) .problem-statement ul.sub-parts{margin: 0.5rem 0 0.25rem 1.4rem; font-size: 0.95rem; color: var(--text-dark);}
:where(html.edb-3f691475) .problem-statement ol li, :where(html.edb-3f691475) .problem-statement ul.sub-parts li{margin-bottom: 0.25rem;}
:where(html.edb-3f691475) .solution-block{margin-top: 1.5rem; background: var(--warm-white); border: 1px solid var(--border); border-left: 5px solid var(--green); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 1.3rem 1.5rem 1.5rem; box-shadow: var(--shadow-sm); counter-reset: solstep; scroll-margin-top: 80px;}
:where(html.edb-3f691475) .solution-label{display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--ff-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; background: var(--green); padding: 0.35rem 0.95rem; border-radius: 999px; margin-bottom: 1.15rem;}
:where(html.edb-3f691475) .sol-step{position: relative; padding-left: 2rem; margin-bottom: 1.2rem;}
:where(html.edb-3f691475) .sol-step::before{counter-increment: solstep; content: counter(solstep); position: absolute; left: 0; top: 0.15rem; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: rgba(26,107,60,0.1); border: 1px solid rgba(26,107,60,0.3); color: var(--green); font-family: var(--ff-mono); font-size: 0.66rem; font-weight: 700; display: flex; align-items: center; justify-content: center;}
:where(html.edb-3f691475) .sol-step > p{font-size: 0.95rem; color: var(--text-mid); margin: 0 0 0.4rem; line-height: 1.75;}
:where(html.edb-3f691475) .sol-step .eq-block{margin: 0.5rem 0 0.6rem;}
:where(html.edb-3f691475) .solution-block > .insight-strip{margin: 1.25rem 0 0;}
:where(html.edb-3f691475) .answer-badge{display: flex; align-items: baseline; gap: 0.65rem; flex-wrap: wrap; margin-top: 1.5rem; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%); border-radius: var(--radius); padding: 0.85rem 1.3rem; box-shadow: var(--shadow-sm);}
:where(html.edb-3f691475) .answer-badge .ab-label{font-family: var(--ff-mono); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--gold); flex-shrink: 0;}
:where(html.edb-3f691475) .answer-badge .ab-value{font-family: var(--ff-body); font-size: 1.05rem; color: #fff; font-weight: 600;}
:where(html.edb-3f691475) .answer-badge .ab-value .math, :where(html.edb-3f691475) .answer-badge mjx-container{color: #fff !important;}
:where(html.edb-3f691475) .part-tag{display: inline-block; margin-right: 0.45rem; font-family: var(--ff-mono); font-size: 0.72rem; font-weight: 700; color: var(--navy-mid); background: rgba(26,58,92,0.08); border: 1px solid rgba(26,58,92,0.18); padding: 0.05rem 0.45rem; border-radius: 4px;}
:where(html.edb-3f691475) .wave-fig{background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem 1.1rem 0.7rem; margin: 1rem auto; max-width: 560px; box-shadow: var(--shadow-sm);}
:where(html.edb-3f691475) .wave-fig svg{width: 100%; height: auto; display: block;}
:where(html.edb-3f691475) .wave-fig figcaption{margin-top: 0.55rem; font-family: var(--ff-mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--steel); text-transform: uppercase; text-align: center; line-height: 1.5;}
:where(html.edb-3f691475) .fig-pair{display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1rem; margin: 1rem 0;}
:where(html.edb-3f691475) .fig-pair .wave-fig{margin: 0; max-width: none;}
:where(html.edb-3f691475) .fig-axis{stroke: var(--text-light, #8a94a6); stroke-width: 1.2;}
:where(html.edb-3f691475) .fig-grid{stroke: var(--border, #d9dee6); stroke-width: 1; stroke-dasharray: 4 4;}
:where(html.edb-3f691475) .fig-trace{fill: none; stroke: var(--navy); stroke-width: 2.4; stroke-linejoin: round;}
:where(html.edb-3f691475) .fig-trace2{fill: none; stroke: var(--red); stroke-width: 2.2; stroke-linejoin: round;}
:where(html.edb-3f691475) .fig-mean{stroke: var(--gold); stroke-width: 1.8; stroke-dasharray: 6 4; fill: none;}
:where(html.edb-3f691475) .fig-wire{fill: none; stroke: var(--navy); stroke-width: 1.8; stroke-linecap: round;}
:where(html.edb-3f691475) .fig-pos{fill: rgba(26,107,60,0.18);}
:where(html.edb-3f691475) .fig-neg{fill: rgba(192,57,43,0.18);}
:where(html.edb-3f691475) .fig-hot{fill: rgba(201,168,76,0.35);}
:where(html.edb-3f691475) .fig-lbl{font-family: ui-monospace, "JetBrains Mono", Menlo, monospace; font-size: 11px; fill: var(--steel);}
:where(html.edb-3f691475) .fig-lbl-d{font-family: ui-monospace, "JetBrains Mono", Menlo, monospace; font-size: 11px; fill: var(--navy); font-weight: 600;}
:where(html.edb-3f691475) .video-wrap{position: relative; width: 100%; max-width: 700px; margin: 0 auto 1rem; aspect-ratio: 16 / 9; min-height: 220px; border-radius: var(--radius-lg); overflow: hidden; background: #000; border: 1px solid var(--border); box-shadow: var(--shadow-md);}
:where(html.edb-3f691475) .video-wrap iframe{position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block;}
@supports (aspect-ratio: 16 / 9){
  :where(html.edb-3f691475) .video-wrap{min-height: 0;}
}
@media (max-width: 640px){
  :where(html.edb-3f691475) .problem-block{margin-bottom: 2.75rem;}
  :where(html.edb-3f691475) .problem-block:not(:first-of-type){padding-top: 2rem;}
  :where(html.edb-3f691475) .pb-badge{font-size: 1.3rem;}
  :where(html.edb-3f691475) .problem-statement, :where(html.edb-3f691475) .solution-block{padding-left: 1.05rem; padding-right: 1.05rem;}
  :where(html.edb-3f691475) .sol-step{padding-left: 1.75rem;}
}
:where(html.edb-d4a6cf7c) .col-fig{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem;margin:1rem 0;}
:where(html.edb-d4a6cf7c) .col-stack{display:flex;flex-direction:column;gap:0.75rem;margin:0.75rem 0;}
:where(html.edb-d4a6cf7c) .eq-desc{margin-top:0.4rem;font-size:0.93rem;color:var(--text-mid);line-height:1.6;}
:where(html.edb-d4a6cf7c) .lecture-content .card-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
:where(html.edb-d4a6cf7c) .card > .card{box-shadow:none;border:none;padding:0.5rem 0 0;background:transparent;}
:where(html.edb-d4a6cf7c) .card > .card-grid{margin-top:0.75rem;}
:where(html.edb-d4a6cf7c) .card .eq-block{border-radius:var(--radius);}
:where(html.edb-d4a6cf7c) .card .data-table-wrap{margin-top:0.75rem;}
:where(html.edb-d4a6cf7c) .lecture-content img{max-width:100%;height:auto;display:block;}
:where(html.edb-d4a6cf7c) .lecture-content figure{max-width:100%;}
:where(html.edb-817e19ba) .eq-block .math{display:block;}
:where(html.edb-817e19ba) .data-table-wrap{overflow-x:auto; margin:1rem 0;}
:where(html.edb-817e19ba) .lecture-content .columns{display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:1.25rem; margin:.75rem 0;}
:where(html.edb-817e19ba) .lecture-content center{text-align:center;}
:where(html.edb-817e19ba) .fig-placeholder img{max-width:100%; height:auto; border-radius:var(--radius); border:1px solid var(--border); margin:.5rem auto; display:block;}
:where(html.edb-817e19ba) .given-list{margin:.25rem 0 .5rem;}
:where(html.edb-817e19ba) .ans-line{margin-top:.75rem; padding:.6rem .9rem; border-left:3px solid var(--accent, #d97706);
                 background:rgba(217,119,6,.08); border-radius:6px;}
:root:where(.edb-06e22c04){--ink:#1d2230;          
  --ink-soft:#4a5163;
  --paper:#fbfaf7;        
  --panel:#ffffff;
  --line:#e3e0d8;
  --p-region:#8e3b2f;     
  --n-region:#1f5f6b;     
  --depletion:#f3ede2;    
  --gold:#b08b3e;
  --code:#f4f2ec;}
:where(html.edb-06e22c04), :where(html.edb-06e22c04) *{box-sizing:border-box}
html:where(.edb-06e22c04){scroll-behavior:smooth}
:where(html.edb-06e22c04) body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.7 "Source Sans 3",system-ui,sans-serif;}
:where(html.edb-06e22c04) .wrap{max-width:880px;margin:0 auto;padding:0 22px;}
:where(html.edb-06e22c04) h1, :where(html.edb-06e22c04) h2, :where(html.edb-06e22c04) h3, :where(html.edb-06e22c04) h4{font-family:"Spectral",Georgia,serif;line-height:1.25;color:var(--ink);}
:where(html.edb-06e22c04) h1{font-size:clamp(1.7rem,4.5vw,2.5rem);font-weight:700;margin:.4em 0 .3em;}
:where(html.edb-06e22c04) h2{font-size:clamp(1.35rem,3vw,1.7rem);font-weight:700;margin:2.6em 0 .6em;padding-top:1.2em;border-top:3px solid var(--ink);}
:where(html.edb-06e22c04) h2 .secno{display:block;font:600 .72rem/1 "JetBrains Mono",monospace;letter-spacing:.18em;color:var(--p-region);text-transform:uppercase;margin-bottom:.55em;}
:where(html.edb-06e22c04) h3{font-size:1.18rem;font-weight:600;margin:1.9em 0 .4em;color:var(--n-region);}
:where(html.edb-06e22c04) h4{font-size:1.02rem;font-weight:600;margin:1.4em 0 .3em;}
:where(html.edb-06e22c04) p{margin:.7em 0;}
:where(html.edb-06e22c04) strong{color:#11141d;}
:where(html.edb-06e22c04) a{color:var(--n-region);}
:where(html.edb-06e22c04) ul, :where(html.edb-06e22c04) ol{padding-left:1.35em;margin:.6em 0;}
:where(html.edb-06e22c04) li{margin:.32em 0;}
:where(html.edb-06e22c04) table{border-collapse:collapse;width:100%;margin:1.1em 0;font-size:.95rem;background:var(--panel);}
:where(html.edb-06e22c04) th, :where(html.edb-06e22c04) td{border:1px solid var(--line);padding:.55em .7em;text-align:left;vertical-align:top;}
:where(html.edb-06e22c04) th{background:#efece4;font-weight:700;}
:where(html.edb-06e22c04) caption{caption-side:top;text-align:left;font:600 .8rem/1.4 "JetBrains Mono",monospace;letter-spacing:.08em;color:var(--ink-soft);padding-bottom:.4em;text-transform:uppercase;}
:where(html.edb-06e22c04) header.site{border-bottom:1px solid var(--line);background:linear-gradient(90deg,#8e3b2f 0 50%,#1f5f6b 50% 100%);height:7px;}
:where(html.edb-06e22c04) .masthead{padding:2.2rem 0 1.4rem;border-bottom:1px solid var(--line);}
:where(html.edb-06e22c04) .eyebrow{font:600 .74rem/1 "JetBrains Mono",monospace;letter-spacing:.22em;text-transform:uppercase;color:var(--p-region);}
:where(html.edb-06e22c04) .subtitle{color:var(--ink-soft);font-size:1.05rem;max-width:62ch;margin-top:.2rem;}
:where(html.edb-06e22c04) .meta-strip{display:flex;gap:1.4em;flex-wrap:wrap;font:600 .76rem/1 "JetBrains Mono",monospace;color:var(--ink-soft);margin-top:1.1rem;letter-spacing:.04em;}
:where(html.edb-06e22c04) nav.toc{background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--n-region);padding:1.1rem 1.3rem;margin:1.8rem 0;}
:where(html.edb-06e22c04) nav.toc h2{border:0;margin:0 0 .5rem;padding:0;font-size:1.05rem;}
:where(html.edb-06e22c04) nav.toc ol{columns:2;column-gap:2.2em;margin:0;padding-left:1.2em;font-size:.95rem;}
:where(html.edb-06e22c04) nav.toc li{break-inside:avoid;}
@media (max-width:640px){
  :where(html.edb-06e22c04) nav.toc ol{columns:1}
}
:where(html.edb-06e22c04) .formula{background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--gold);padding:.7rem 1rem;margin:1rem 0;overflow-x:auto;}
:where(html.edb-06e22c04) .formula .tag{font:600 .68rem/1 "JetBrains Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);display:block;margin-bottom:.25rem;}
:where(html.edb-06e22c04) .examtip{background:var(--depletion);border:1px solid #e4d9c3;border-left:5px solid var(--p-region);padding:.8rem 1rem;margin:1.1rem 0;}
:where(html.edb-06e22c04) .examtip .tag{font:700 .7rem/1 "JetBrains Mono",monospace;letter-spacing:.16em;text-transform:uppercase;color:var(--p-region);display:block;margin-bottom:.3rem;}
:where(html.edb-06e22c04) .keydef{border:1px dashed var(--n-region);background:#f2f7f8;padding:.7rem 1rem;margin:1rem 0;}
:where(html.edb-06e22c04) .keydef .tag{font:700 .7rem/1 "JetBrains Mono",monospace;letter-spacing:.16em;text-transform:uppercase;color:var(--n-region);display:block;margin-bottom:.25rem;}
:where(html.edb-06e22c04) .revision{background:#14202b;color:#e9eef2;padding:1.2rem 1.4rem;margin:1.6rem 0;border-radius:2px;}
:where(html.edb-06e22c04) .revision h3{color:#ffd98a;margin-top:0;}
:where(html.edb-06e22c04) .revision li{margin:.4em 0;}
:where(html.edb-06e22c04) .revision strong{color:#fff;}
:where(html.edb-06e22c04) .derivation{border:1px solid var(--line);background:var(--panel);padding:1rem 1.2rem;margin:1.1rem 0;}
:where(html.edb-06e22c04) .derivation summary{font-weight:700;cursor:pointer;color:var(--n-region);font-family:"Spectral",serif;}
:where(html.edb-06e22c04) mjx-container{overflow-x:auto;overflow-y:hidden;max-width:100%;}
:where(html.edb-06e22c04) footer.site{border-top:3px solid var(--ink);margin-top:3rem;padding:1.6rem 0 2.4rem;color:var(--ink-soft);font-size:.92rem;}
:where(html.edb-06e22c04) .backtop{font:600 .74rem/1 "JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.12em;}
@media print{
  :where(html.edb-06e22c04) nav.toc ol{columns:1}
  :where(html.edb-06e22c04) .revision{background:#fff;color:#000;border:2px solid #000}
}
