:root {
    --bg-canvas: #07090E;
    --bg-page: #05070B;
    --bg-panel: #0F141F;
    --bg-panel-hover: #161E2E;
    --border-color: #1E293B;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --bull-green: #00E676;
    --bear-red: #FF2A54;
    --struct-blue: #3B82F6;
    --gold-accent: #FFD600;
    --paypal-gold: #FFC439;
    --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'Fira Code', 'SFMono-Regular', Consolas, monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Pretendard', 'Segoe UI', Roboto, sans-serif;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-anchor: none;
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 24px;
    background: rgba(7, 9, 14, 0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 12px;
  }
  .brand-group { display: flex; align-items: center; gap: 12px; }
  .brand-logo {
    display: flex;
    align-items: center;
    gap: 9px;
    font-family: var(--font-mono);
    font-weight: 900;
    font-size: 1.08rem;
    letter-spacing: 0.08em;
    color: var(--text-primary);
    background: transparent;
    border: none;
    cursor: pointer;
  }
  .brand-symbol {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 7px;
    background: linear-gradient(135deg, var(--bull-green), var(--struct-blue));
    color: #07090E;
    font-weight: 900;
    font-size: 1rem;
    box-shadow: 0 0 14px rgba(0, 230, 118, 0.35);
  }
  .domain-pill {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--bull-green);
    background: rgba(0, 230, 118, 0.1);
    border: 1px solid rgba(0, 230, 118, 0.3);
    padding: 2px 8px;
    border-radius: 4px;
  }

  .nav-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #0A0E17;
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
  }
  .nav-tab {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 7px 14px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .nav-tab:hover { color: var(--text-primary); background: rgba(255,255,255,0.04); }
  .nav-tab.active {
    background: var(--struct-blue);
    color: #ffffff;
    box-shadow: 0 0 14px rgba(59, 130, 246, 0.35);
  }
  .nav-tab.admin-tab.active {
    background: var(--gold-accent);
    color: #07090E;
    box-shadow: 0 0 14px rgba(255, 214, 0, 0.35);
  }

  .top-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
  .pill-select, .pill-btn {
    background: var(--bg-panel);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 11px;
    font-size: 0.76rem;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.15s ease;
  }
  .pill-select:hover, .pill-btn:hover {
    border-color: var(--struct-blue);
    background: var(--bg-panel-hover);
  }
  .pill-btn.active {
    background: var(--struct-blue);
    color: #ffffff;
    border-color: var(--struct-blue);
  }
  .user-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 5px 11px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    border: 1px solid rgba(0, 230, 118, 0.35);
    background: rgba(0, 230, 118, 0.1);
    color: var(--bull-green);
    cursor: pointer;
  }
  .lang-duration-badge {
    font-family: var(--font-mono);
    font-size: 0.73rem;
    color: var(--gold-accent);
    background: rgba(255, 214, 0, 0.1);
    border: 1px solid rgba(255, 214, 0, 0.32);
    padding: 5px 9px;
    border-radius: 6px;
  }

  .container { max-width: 1280px; margin: 0 auto; padding: 22px 20px 64px; }
  .saas-view { display: none; }
  .saas-view.active { display: block; }

  .academy-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    align-items: start;
  }
  @media (max-width: 1024px) { .academy-layout { grid-template-columns: 1fr; } }
  .curriculum-sidebar {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    position: sticky;
    top: 70px;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
  }
  .track-group { margin-bottom: 14px; }
  .track-header {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--gold-accent);
    text-transform: uppercase;
    margin-bottom: 6px;
    letter-spacing: 0.04em;
  }
  .lesson-nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    border-radius: 7px;
    font-size: 0.81rem;
    color: var(--text-secondary);
    cursor: pointer;
    border: 1px solid transparent;
    margin-bottom: 4px;
    transition: all 0.12s ease;
  }
  .lesson-nav-item:hover { background: var(--bg-panel-hover); color: var(--text-primary); }
  .lesson-nav-item.active {
    background: rgba(0, 230, 118, 0.12);
    border-color: var(--bull-green);
    color: var(--text-primary);
    font-weight: 700;
  }
  .badge-free {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(0, 230, 118, 0.16);
    color: var(--bull-green);
    font-weight: 800;
  }
  .badge-pro {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255, 214, 0, 0.15);
    color: var(--gold-accent);
    font-weight: 800;
  }

  .lesson-header {
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 12px;
  }
  .lesson-tag {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--gold-accent);
    letter-spacing: 0.07em;
    text-transform: uppercase;
    margin-bottom: 3px;
  }
  .lesson-title { font-size: 1.45rem; font-weight: 800; letter-spacing: -0.02em; }
  .lesson-meta { font-family: var(--font-mono); font-size: 0.76rem; color: var(--bull-green); }

  .player-wrapper {
    background: var(--bg-canvas);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.78);
    margin-bottom: 22px;
    position: relative;
  }
  .stage-viewport {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--bg-canvas);
    overflow: hidden;
    user-select: none;
  }

  .paywall-overlay {
    position: absolute;
    inset: 0;
    background: rgba(5, 7, 11, 0.92);
    backdrop-filter: blur(12px);
    z-index: 50;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 32px;
  }
  .paywall-overlay.show { display: flex; }
  .paywall-box {
    max-width: 540px;
    background: var(--bg-panel);
    border: 1px solid var(--gold-accent);
    border-radius: 14px;
    padding: 28px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.85);
  }

  .stage-hud-top {
    position: absolute;
    top: 16px;
    left: 20px;
    right: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: none;
    z-index: 10;
    flex-wrap: wrap;
    gap: 8px;
  }
  .hud-badge {
    background: rgba(15, 20, 31, 0.86);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .hud-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--bull-green);
    box-shadow: 0 0 8px var(--bull-green);
  }
  .svg-stage { width: 100%; height: 100%; display: block; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
  .caption-overlay {
    position: absolute;
    bottom: 18px;
    left: 5%;
    right: 5%;
    text-align: center;
    pointer-events: none;
    z-index: 15;
    transition: opacity 0.2s ease;
  }
  .caption-box {
    display: inline-block;
    background: rgba(7, 9, 14, 0.92);
    border: 1px solid rgba(59, 130, 246, 0.42);
    backdrop-filter: blur(8px);
    color: #F8FAFC;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 1.02rem;
    font-weight: 500;
    line-height: 1.48;
    max-width: 920px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.75);
  }
  .caption-box.large { font-size: 1.22rem; }


  .control-dock { background: var(--bg-panel); border-top: 1px solid var(--border-color); padding: 12px 20px 14px; }
  .scrubber-row { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; position: relative; }
  .range-wrap { position: relative; flex: 1; display: flex; align-items: center; }
  .timeline-slider {
    -webkit-appearance: none; appearance: none; width: 100%; height: 8px;
    border-radius: 4px; background: #1E293B; outline: none; cursor: pointer; z-index: 2;
  }
  .timeline-slider::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border-radius: 50%;
    background: var(--bull-green); border: 2px solid #07090E; box-shadow: 0 0 10px var(--bull-green); cursor: grab;
  }
  .scene-ticks { position: absolute; left: 0; right: 0; top: 0; bottom: 0; pointer-events: none; z-index: 3; }
  .scene-tick { position: absolute; top: 0; width: 2px; height: 8px; background: rgba(255, 214, 0, 0.45); }
  .time-readout {
    font-family: var(--font-mono); font-size: 0.82rem; font-variant-numeric: tabular-nums;
    color: var(--gold-accent); min-width: 145px; text-align: right; font-weight: 700;
  }
  .controls-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
  .ctrl-left, .ctrl-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
  .play-btn {
    background: var(--bull-green); color: #07090E; border: none; border-radius: 6px; padding: 7px 16px;
    font-family: var(--font-mono); font-weight: 800; font-size: 0.84rem; cursor: pointer; display: flex; align-items: center; gap: 6px;
  }
  .play-btn:hover { opacity: 0.92; }
  .voice-status { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-secondary); margin-left: 4px; }

  .console-grid { display: grid; grid-template-columns: 1.12fr 0.88fr; gap: 20px; }
  @media (max-width: 900px) { .console-grid { grid-template-columns: 1fr; } }
  .panel-card { background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 10px; padding: 20px; }
  .panel-title {
    font-family: var(--font-mono); font-size: 0.88rem; font-weight: 700; color: var(--text-primary);
    margin-bottom: 14px; display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 10px; border-bottom: 1px solid var(--border-color); flex-wrap: wrap; gap: 6px;
  }

  .transcript-list {
    position: relative; max-height: 440px; overflow-y: auto; display: flex;
    flex-direction: column; gap: 6px; padding-right: 6px; overscroll-behavior: contain;
  }
  .transcript-item {
    display: flex; gap: 12px; padding: 9px 11px; border-radius: 7px; border: 1px solid transparent;
    cursor: pointer; transition: background 0.12s ease, border-color 0.12s ease; align-items: flex-start;
  }
  .transcript-item:hover { background: var(--bg-panel-hover); border-color: var(--border-color); }
  .transcript-item.active { background: rgba(0, 230, 118, 0.11); border-color: var(--bull-green); }
  .t-time { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; color: var(--gold-accent); min-width: 86px; padding-top: 2px; font-variant-numeric: tabular-nums; }
  .t-text { font-size: 0.84rem; color: var(--text-primary); flex: 1; }
  .t-dur { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); padding-top: 2px; }

  .quiz-scenario { background: rgba(7, 9, 14, 0.6); border: 1px solid var(--border-color); border-radius: 8px; padding: 14px; margin-bottom: 14px; }
  .quiz-prompt { font-size: 0.84rem; margin-bottom: 10px; }
  .quiz-option {
    display: block; width: 100%; text-align: left; background: var(--bg-panel); border: 1px solid var(--border-color);
    color: var(--text-primary); padding: 8px 12px; border-radius: 6px; margin-bottom: 7px; font-size: 0.8rem; cursor: pointer;
  }
  .quiz-option:hover { border-color: var(--struct-blue); }
  .quiz-option.correct { border-color: var(--bull-green); background: rgba(0, 230, 118, 0.12); }
  .quiz-option.wrong { border-color: var(--bear-red); background: rgba(255, 42, 84, 0.12); }
  .quiz-feedback { font-size: 0.78rem; margin-top: 6px; padding: 7px 10px; border-radius: 6px; display: none; }

  .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
  .calc-field label { display: block; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-secondary); margin-bottom: 4px; }
  .calc-field input, .saas-input {
    width: 100%; background: var(--bg-canvas); border: 1px solid var(--border-color);
    color: var(--text-primary); padding: 8px 11px; border-radius: 6px; font-family: var(--font-mono); font-size: 0.84rem;
  }
  .calc-output {
    margin-top: 12px; padding: 12px; background: rgba(0, 230, 118, 0.08);
    border: 1px solid var(--bull-green); border-radius: 8px;
    display: flex; justify-content: space-between; align-items: center; font-family: var(--font-mono);
  }

  .pricing-hero { text-align: center; max-width: 780px; margin: 12px auto 34px; }
  .pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 36px; }
  @media (max-width: 920px) { .pricing-grid { grid-template-columns: 1fr; } }
  .price-card {
    background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 14px;
    padding: 28px 24px; display: flex; flex-direction: column; justify-content: space-between; position: relative;
  }
  .price-card.featured {
    border: 2px solid var(--bull-green);
    box-shadow: 0 20px 50px rgba(0, 230, 118, 0.14);
  }
  .popular-ribbon {
    position: absolute; top: -12px; right: 20px; background: var(--bull-green); color: #07090E;
    font-family: var(--font-mono); font-size: 0.72rem; font-weight: 900; padding: 3px 10px; border-radius: 99px;
  }
  .price-amount { font-family: var(--font-mono); font-size: 2.5rem; font-weight: 900; color: var(--text-primary); margin: 12px 0 6px; }
  .price-features { list-style: none; margin: 18px 0 24px; display: flex; flex-direction: column; gap: 10px; font-size: 0.88rem; color: var(--text-secondary); }
  .paypal-btn {
    width: 100%; background: var(--paypal-gold); color: #003087; border: none; border-radius: 8px;
    padding: 12px 16px; font-family: var(--font-sans); font-weight: 800; font-size: 0.95rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px;
    transition: transform 0.12s ease, opacity 0.12s ease;
  }
  .paypal-btn:hover { opacity: 0.94; transform: translateY(-1px); }

  .oauth-btn {
    width: 100%;
    padding: 10px 14px;
    border-radius: 7px;
    font-family: var(--font-sans);
    font-size: 0.86rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: opacity 0.15s ease;
  }
  .oauth-btn:hover { opacity: 0.92; }
  .oauth-google { background: #FFFFFF; color: #1F2937; border: 1px solid #D1D5DB; }
  .oauth-apple { background: #000000; color: #FFFFFF; border: 1px solid #374151; }

  .kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
  @media (max-width: 960px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
  .kpi-card { background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 10px; padding: 18px; }
  .kpi-label { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-secondary); text-transform: uppercase; }
  .kpi-val { font-family: var(--font-mono); font-size: 1.75rem; font-weight: 900; margin: 6px 0 4px; }
  .kpi-sub { font-family: var(--font-mono); font-size: 0.74rem; color: var(--bull-green); }
  .admin-table-wrap { overflow-x: auto; }
  .saas-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
  .saas-table th, .saas-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border-color); font-family: var(--font-mono); }
  .saas-table th { color: var(--text-secondary); font-size: 0.73rem; text-transform: uppercase; background: rgba(7, 9, 14, 0.5); }
  .status-pill { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.7rem; font-weight: 800; }
  .status-completed { background: rgba(0, 230, 118, 0.14); color: var(--bull-green); }
  .status-refunded { background: rgba(255, 42, 84, 0.14); color: var(--bear-red); }

  .modal-backdrop {
    position: fixed; inset: 0; background: rgba(5, 7, 11, 0.85); backdrop-filter: blur(8px);
    z-index: 200; display: none; align-items: center; justify-content: center; padding: 20px;
  }
  .modal-backdrop.open { display: flex; }
  .modal-card {
    background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 14px;
    width: 100%; max-width: 460px; padding: 26px; box-shadow: 0 24px 64px rgba(0,0,0,0.85);
  }


.lesson-overview{border:1px solid var(--border-color);border-left:3px solid var(--struct-blue);background:var(--bg-panel);border-radius:10px;padding:16px 20px;margin:0 0 16px}
.lesson-overview p{font-size:.92rem;line-height:1.8;color:var(--text-primary);max-width:1100px}
.lesson-overview small{display:block;margin-top:8px;color:var(--text-secondary);font-size:.72rem}
.chapter-nav{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));background:#090D15;border-top:1px solid var(--border-color);padding:8px;gap:6px}
.chapter-btn{border:1px solid transparent;border-radius:6px;padding:7px 8px;background:transparent;text-align:left;color:var(--text-secondary);font:inherit;cursor:pointer;min-width:0}
.chapter-btn small{display:block;font:10px var(--font-mono);color:var(--text-muted);margin-bottom:3px}
.chapter-btn span{display:block;font-size:.73rem;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chapter-btn.active{border-color:var(--struct-blue);background:#12233D;color:var(--text-primary)}
.chapter-btn.active small{color:var(--bull-green)}
.lesson-nav-item{width:100%;text-align:left;font:inherit;font-size:.73rem;background:transparent;border:1px solid transparent;gap:6px}
.lesson-nav-item span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lesson-nav-item small{font:10px var(--font-mono);color:var(--text-muted);flex-shrink:0}
.lesson-nav-item.active small{color:var(--bull-green)}
.transcript-item{width:100%;background:transparent;border:0;border-bottom:1px solid var(--border-color);text-align:left;font:inherit;color:var(--text-secondary);cursor:pointer;display:grid;grid-template-columns:44px 1fr;gap:12px}
.transcript-item .t-text{font-size:.83rem;line-height:1.8}
.transcript-item .t-text small{display:block;font-size:.66rem;color:var(--bull-green);margin-bottom:5px}
.transcript-item.active{background:rgba(59,130,246,.1);color:var(--text-primary)}
.transcript-list{max-height:570px;overflow:auto}
.reflection-label{display:block;font-size:.8rem;margin-top:16px;margin-bottom:7px;color:var(--text-primary)}
#reflectionInput{width:100%;resize:vertical;min-height:100px;background:var(--bg-canvas);color:var(--text-primary);border:1px solid var(--border-color);border-radius:7px;padding:10px;font:inherit;font-size:.8rem;line-height:1.7}
.caption-overlay{bottom:10px;pointer-events:none}
.caption-box{max-width:92%;padding:10px 18px;font-size:clamp(11px,1.15vw,18px);line-height:1.55}
.caption-box.large{font-size:clamp(13px,1.4vw,21px)}
.stage-hud-top{gap:8px}.hud-badge{font-size:clamp(8px,.8vw,12px)}
.voice-status{font-size:.65rem;max-width:240px}
.player-wrapper:fullscreen{width:100%;height:100%;background:var(--bg-canvas);display:flex;flex-direction:column;justify-content:center;overflow:auto}
.player-wrapper:fullscreen .stage-viewport{width:min(100%,calc((100vh - 180px)*16/9));margin:auto;flex-shrink:0}
.player-wrapper:fullscreen .control-dock,.player-wrapper:fullscreen .chapter-nav{width:100%}
button:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--gold-accent);outline-offset:3px}
.timeline-slider{background:linear-gradient(to right,var(--struct-blue) var(--progress,0%),#1E293B var(--progress,0%))}
@media(max-width:1100px){.academy-layout{grid-template-columns:255px minmax(0,1fr)}.console-grid{grid-template-columns:1fr}.lesson-header{align-items:flex-start}.chapter-nav{grid-template-columns:repeat(3,minmax(0,1fr))}.caption-box{font-size:12px}.ctrl-left,.ctrl-right{flex-wrap:wrap}}
@media(max-width:960px){.academy-layout{display:flex;flex-direction:column}.curriculum-sidebar{position:static;width:100%;max-height:240px}.container{padding:12px}.topbar{padding:10px 12px}.lesson-title{font-size:1.2rem}.hud-badge{font-size:8px;padding:3px 6px}.stage-hud-top{top:6px;left:7px;right:7px}.caption-box{padding:5px 8px;font-size:10px}.caption-overlay{bottom:4px}.chapter-btn span{font-size:.65rem}.control-dock{padding:10px}.voice-status{display:block;max-width:100%}.lesson-overview{padding:12px}.lesson-overview p{font-size:.84rem}.console-grid{grid-template-columns:minmax(0,1fr)}.time-readout{font-size:.65rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media(max-width:960px){.topbar{position:static}.caption-box{font-size:12px}.caption-box.large{font-size:15px}}

.brand-logo{text-decoration:none}.brand-logo img{flex:none}.academy-links{display:flex;gap:22px;align-items:center;font-size:13px}.academy-links a,.academy-footer a{color:#94A3B8;text-decoration:none}.academy-links a[aria-current],.academy-links a:hover{color:#00E676}.academy-footer{display:flex;justify-content:space-between;gap:20px;padding:28px 24px;color:#64748B;border-top:1px solid #1E293B;font-size:12px}.academy-notice{padding:12px 24px;background:#111e32;border-bottom:1px solid #264062;color:#d6e7ff;font-size:13px}.academy-notice[hidden],[hidden]{display:none!important}.lesson-nav-item{text-decoration:none}.lesson-nav-item .access-label{font-size:9px;color:#64748B;border:1px solid #334155;border-radius:4px;padding:2px 4px}.lesson-nav-item .access-label.free{color:#00E676;border-color:#145c3b}.lesson-nav-item .lesson-nav-name{flex:1;min-width:0}.lesson-nav-item .lesson-duration{font-size:9px}.topbar a.pill-btn{text-decoration:none}.curriculum-sidebar{min-width:0}#sidebarAccessStatus{white-space:nowrap;margin-left:10px}#view-academy[aria-busy=true] #playerWrapper{opacity:.6}.academy-notice button{background:transparent;border:0;text-decoration:underline;color:inherit;font:inherit;cursor:pointer}a:focus-visible{outline:2px solid #FFD600;outline-offset:4px}@media(max-width:700px){.academy-links{gap:15px}.academy-footer{flex-direction:column}.top-controls{width:100%}#langDurationBadge{display:none}.academy-notice{padding:10px 12px}}
.diagram-scroll{width:100%;height:100%;overflow:hidden;overscroll-behavior-x:contain}
.player-wrapper.diagram-zoomed .stage-viewport{aspect-ratio:auto}
.player-wrapper.diagram-zoomed .diagram-scroll{overflow-x:auto;height:auto;touch-action:pan-x pan-y pinch-zoom}
.player-wrapper.diagram-zoomed .svg-stage{min-width:960px;height:auto;aspect-ratio:16/9}
.player-wrapper.diagram-zoomed .caption-overlay{position:relative;inset:auto;padding:8px}
body.player-expanded{overflow:hidden}
.player-wrapper.is-expanded{position:fixed;inset:0;z-index:1000;width:100%;height:100dvh;margin:0;border-radius:0;overflow:auto;background:var(--bg-canvas)}
.player-wrapper.is-expanded .stage-viewport{max-width:1280px;margin:auto}
@media(max-width:700px){
 .stage-viewport{aspect-ratio:auto}
 .diagram-scroll{height:auto}
 .svg-stage{height:auto;aspect-ratio:16/9}
 .caption-overlay{position:relative;inset:auto;padding:8px 6px;min-height:70px}
 .caption-box{font-size:14px;max-width:100%}
 .caption-box.large{font-size:18px}
 .play-btn,.pill-btn,.pill-select{min-height:44px}
 .control-dock{padding:10px 8px}
 .player-wrapper:fullscreen .stage-viewport{width:100%;margin:0;flex-shrink:0}
}