/* Locked student desk. Shared by render_desk.py. Do not put factory notes in the HTML. */
    :root {
      --bg: #ffffff;
      --ink: #1c1917;
      --muted: #57534e;
      --line: #e7e5e4;
      --card: #fafaf9;
      --accent: #c45c2c;
      --accent-soft: #fdf0e8;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
      background: var(--bg);
      color: var(--ink);
      line-height: 1.65;
    }
    .wrap {
      max-width: 68rem;
      margin: 0 auto;
      padding: 3.25rem 1.75rem 4.5rem;
    }
    header.hero { margin-bottom: 2.25rem; }
    p.kicker {
      margin: 0 0 0.7rem;
      font-size: 0.78rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--muted);
    }
    h1, h1.lesson-title {
      margin: 0 0 0.65rem;
      font-size: clamp(1.7rem, 3vw, 2.25rem);
      line-height: 1.2;
      font-weight: 650;
      letter-spacing: -0.02em;
      color: #1e3a8a;
    }
    p.source-video { margin: 0 0 0.2rem; font-size: 1.02rem; }
    p.source-video a {
      color: #1d4ed8;
      font-weight: 600;
      text-decoration: none;
      border-bottom: 1px solid rgba(29, 78, 216, 0.35);
    }
    p.source-video a:hover { border-bottom-color: #1d4ed8; }
    p.welcome {
      margin: 0.85rem 0 0;
      max-width: 38rem;
      font-size: 1.12rem;
      color: var(--muted);
    }
    p.channel {
      margin: 0.55rem 0 0;
      color: var(--muted);
      font-size: 0.95rem;
    }

    p.film-title {
      margin: 0 0 0.45rem;
      font-size: 0.98rem;
      color: var(--muted);
    }
    .ways {
      margin: 1.15rem 0 2.1rem;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--muted);
    }
    .ways a {
      color: #1d4ed8;
      text-decoration: none;
      border-bottom: 1px solid rgba(29, 78, 216, 0.35);
    }
    .ways a:hover { border-bottom-color: #1d4ed8; }

    section.block {
      padding: 2.75rem 0 0.5rem;
      border-top: 1px solid var(--line);
      scroll-margin-top: 1.25rem;
    }
    section.block h2 {
      margin: 0 0 1rem;
      font-size: 1.45rem;
      font-weight: 650;
      color: #1e3a8a;
    }
    h3 {
      margin: 1.75rem 0 0.65rem;
      font-size: 1.05rem;
      font-weight: 650;
    }
    p.lead { margin: 0 0 1rem; font-size: 1.05rem; }
    p { margin: 0 0 1rem; }
    ol.takeaways {
      margin: 0;
      padding-left: 1.25rem;
    }
    ol.takeaways li { margin: 0.55rem 0; }
    ul.keywords {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    ul.keywords li {
      padding: 0.55rem 0;
      border-bottom: 1px solid var(--line);
    }
    ul.keywords strong { font-weight: 650; }
    ul.stamps {
      list-style: none;
      margin: 0;
      padding: 0;
      border-top: 1px solid var(--line);
    }
    ul.stamps li {
      display: grid;
      grid-template-columns: 4.2rem 1fr;
      gap: 0.85rem;
      padding: 0.62rem 0;
      border-bottom: 1px solid var(--line);
    }
    time {
      font-variant-numeric: tabular-nums;
      color: var(--accent);
      font-weight: 600;
      font-size: 0.92rem;
    }
    code {
      font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
      font-size: 0.9em;
      background: var(--accent-soft);
      padding: 0.08em 0.28em;
      border-radius: 0.25rem;
    }

    .video-slot {
      position: relative;
      width: 100%;
      max-width: 56rem;
      aspect-ratio: 16 / 9;
      background: #f5f5f4;
      border: 1px solid var(--line);
      border-radius: 0.85rem;
      overflow: hidden;
    }
    .video-slot iframe {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      border: 0;
    }
    .video-slot[data-card="custom"] iframe { display: none; }
    .video-slot[data-card="embed"] .title-card { display: none; }
    a.title-card {
      display: block;
      position: absolute;
      inset: 0;
      color: inherit;
      text-decoration: none;
    }
    a.title-card img.card-art {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .card-copy {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      padding: 2.4rem 1.45rem 1.1rem;
      background: linear-gradient(to top, rgba(255,255,255,0.97) 42%, rgba(255,255,255,0));
    }
    .one-liner {
      margin: 0 0 0.55rem;
      font-size: clamp(1.2rem, 2.5vw, 1.7rem);
      font-weight: 650;
      line-height: 1.2;
      letter-spacing: -0.02em;
      max-width: 34rem;
    }
    .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }
    .curated {
      margin: 0;
      font-size: 0.78rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--muted);
      font-weight: 650;
    }
    img.lockup {
      height: 3.15rem;
      width: auto;
      display: block;
    }
    .play-chip {
      position: absolute;
      top: 1rem;
      right: 1rem;
      padding: 0.38rem 0.7rem;
      border-radius: 999px;
      background: rgba(255,255,255,0.92);
      border: 1px solid var(--line);
      font-size: 0.78rem;
      font-weight: 650;
      letter-spacing: 0.04em;
      text-transform: uppercase;
    }
    p.watch-link { margin: 0.85rem 0 0; font-size: 0.95rem; }
    p.watch-link a {
      color: var(--accent);
      font-weight: 600;
      text-decoration: none;
      border-bottom: 1px solid rgba(196, 92, 44, 0.35);
    }

    .listen-box {
      max-width: 36rem;
      padding: 1.35rem 1.4rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 1rem;
    }
    .listen-box p { margin: 0 0 0.85rem; color: var(--muted); }
    audio { width: 100%; }

    h2#res-h {
      color: #1e3a8a;
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }
    ul.lesson-res { margin: 0; padding: 0; list-style: none; max-width: 40rem; }
    ul.lesson-res li { margin: 0 0 0.85rem; }
    ul.lesson-res a { color: var(--accent); font-weight: 600; text-decoration: none; border-bottom: 1px solid rgba(196, 92, 44, 0.35); }
    details.transcript {
      margin-top: 2.5rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 0.95rem;
    }
    details.transcript summary {
      cursor: pointer;
      color: var(--ink);
      font-weight: 600;
    }
    details.transcript .t {
      margin-top: 1rem;
    }
    details.transcript .t p { margin: 0 0 0.9rem; }

    footer {
      margin-top: 3rem;
      padding-top: 1.1rem;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 0.88rem;
    }

    nav.school-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
      margin: -0.4rem 0 1.85rem;
    }
    nav.school-bar a {
      color: var(--muted);
      text-decoration: none;
      font-size: 0.92rem;
      font-weight: 600;
    }
    nav.school-bar a.mark {
      color: #1e3a8a;
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }
    nav.school-bar a:hover { color: var(--ink); }
    nav.school-bar a.mark:hover { color: #1e3a8a; }
    nav.school-bar .bar-end { display: flex; align-items: center; gap: 0.85rem; flex-wrap: wrap; }
    nav.school-bar .bar-tools { display: flex; align-items: center; gap: 0.75rem; }
    nav.school-bar a.consult-chip {
      color: #fff;
      background: #1e3a8a;
      border-radius: 999px;
      padding: 0.42rem 0.85rem;
      letter-spacing: 0.01em;
      text-transform: none;
    }
    nav.school-bar a.consult-chip:hover { color: #fff; background: #172e6e; }
    nav.school-bar details.account summary { cursor: pointer; color: #1e3a8a; font-weight: 650; list-style: none; }
    nav.school-bar details.account summary::-webkit-details-marker { display: none; }
    @media (max-width: 800px) {
      .wrap { padding: 2.25rem 1.2rem 3.25rem; }
      .actions {
        grid-template-columns: 1fr;
        gap: 0.85rem;
      }
      a.action { min-height: 0; }
      a.action h2 { margin-top: 0.55rem; }
    }
  
.hero-card { margin: 1.25rem 0 1.1rem; max-width: 56rem; }
p.welcome { margin: 0 0 0.25rem; }
.film-slot iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

    p.crumbs {
      margin: 0;
      max-width: 38rem;
      font-size: 0.92rem;
      font-weight: 600;
      line-height: 1.4;
      color: var(--muted);
    }
    p.crumbs a { color: #1e3a8a; }
    p.crumbs a:hover { color: #172e6e; }
    p.crumbs .crumb-sep { margin: 0 0.4rem; color: #a8a29e; }
    p.crumbs .crumb-here { color: var(--muted); font-weight: 600; }