:root {
    --primary: #2c3e50;
    --accent: #3498db;
    --accent-dark: #2980b9;
    --bg: #ffffff;
    --bg-alt: #f8f9fa;
    --text: #2c3e50;
    --text-light: #6c757d;
    --border: #dee2e6;
    --gold: #f9ca24;
    --silver: #95a5a6;
    --bronze: #e17055;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --radius: 8px;
  }
  
  * { margin: 0; padding: 0; box-sizing: border-box; }
  
  html { scroll-behavior: smooth; }
  
  body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
  }
  
  /* ── Navigation ── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
  }
  nav .nav-inner {
    max-width: 1100px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    height: 56px;
  }
  nav .nav-title {
    font-weight: 700; font-size: 0.95rem; color: var(--primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    max-width: 320px;
  }
  nav .nav-links { display: flex; gap: 0.2rem; flex-wrap: wrap; }
  nav .nav-links a {
    text-decoration: none; color: var(--text-light);
    font-size: 0.8rem; padding: 0.3rem 0.6rem; border-radius: 4px;
    transition: all 0.2s;
  }
  nav .nav-links a:hover { color: var(--accent); background: rgba(52,152,219,0.08); }
  
  /* ── Container ── */
  .container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
  
  /* ── Inline Logo ── */
  .inline-logo {
    height: 1em;
    width: auto;
    vertical-align: middle;
    display: inline;
  }

  /* ── Hero / Header ── */
  .hero {
    padding-top: 100px; padding-bottom: 2rem; text-align: center;
  }
  .hero h1 {
    font-size: 2.2rem; font-weight: 800; line-height: 1.3;
    color: var(--primary); margin-bottom: 0.8rem;
  }
  .hero .subtitle {
    font-size: 1rem; color: var(--text-light); margin-bottom: 1.2rem;
  }
  .hero .publication-authors {
    font-size: 1.05rem;
    color: var(--text);
    line-height: 1.9;
    margin: 0.6rem auto 0.2rem;
    max-width: 900px;
  }
  .hero .publication-authors .author-block {
    display: inline-block;
    margin: 0 0.25rem;
    white-space: nowrap;
  }
  .hero .publication-authors a,
  .hero .publication-authors a:link,
  .hero .publication-authors a:visited,
  .hero .publication-authors a:hover,
  .hero .publication-authors a:active {
    color: #5aa7e6;
    text-decoration: none;
    font-weight: 600;
  }
  .hero .publication-authors sup {
    font-size: 0.75em;
    color: var(--text-light);
  }
  .hero .publication-authors.note {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 0.3rem;
  }
  .hero .publication-authors.affiliations {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-top: 0.4rem;
    margin-bottom: 0.8rem;
  }
  .hero .badge {
    display: inline-block;
    background: var(--accent); color: #fff;
    padding: 0.35rem 1rem; border-radius: 20px;
    font-size: 0.85rem; font-weight: 600;
  }
  .hero .links {
    margin-top: 1.2rem; display: flex; gap: 0.8rem;
    justify-content: center; flex-wrap: wrap;
  }
  .hero .links a {
    display: inline-flex; align-items: center; gap: 0.4rem;
    text-decoration: none; padding: 0.5rem 1.2rem;
    border-radius: 6px; font-size: 0.9rem; font-weight: 600;
    transition: all 0.2s;
  }
  .btn-primary { background: var(--accent); color: #fff; }
  .btn-primary:hover { background: var(--accent-dark); }
  .btn-outline { border: 2px solid var(--border); color: var(--text); }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent); }
  
  /* ── Sections ── */
  section { padding: 3rem 0; }
  section:nth-child(even) { background: var(--bg-alt); }
  .section-title {
    font-size: 1.6rem; font-weight: 700; text-align: center;
    margin-bottom: 1.8rem; color: var(--primary);
    position: relative; display: inline-block;
    left: 50%; transform: translateX(-50%);
  }
  .section-title::after {
    content: ''; display: block; width: 50px; height: 3px;
    background: var(--accent); margin: 0.5rem auto 0;
    border-radius: 2px;
  }

  /* ── Leaderboard Notice ── */
  .leaderboard-notice {
    max-width: 900px;
    margin: 2rem auto 0;
    padding: 1.4rem 1.8rem;
    background: linear-gradient(135deg, #f0f7ff 0%, #f8fbff 100%);
    border: 1px solid #d4e6f9;
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    color: var(--text);
    font-size: 0.98rem;
    line-height: 1.7;
  }
  .leaderboard-notice p {
    margin: 0.55rem 0;
  }
  .leaderboard-notice p:first-child {
    margin-top: 0;
    font-size: 1.02rem;
    color: var(--primary);
  }
  .leaderboard-notice p:last-child {
    margin-bottom: 0;
  }
  .leaderboard-notice ol {
    margin: 0.6rem 0 0.8rem 1.4rem;
    padding-left: 0.6rem;
  }
  .leaderboard-notice ol li {
    margin: 0.45rem 0;
    padding-left: 0.3rem;
  }
  .leaderboard-notice ol li::marker {
    color: var(--accent);
    font-weight: 700;
  }
  .leaderboard-notice strong {
    color: var(--primary);
  }
  .leaderboard-notice a {
    color: var(--accent-dark);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid rgba(52,152,219,0.35);
    transition: all 0.2s;
  }
  .leaderboard-notice a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
  }


  /* ── Teaser ── */
  .teaser-img {
    width: 100%; border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); margin-bottom: 2rem;
  }
  .teaser-img img {
    width: 100%; display: block;
  }

  /* ── Prompt Display ── */
  .prompt-display {
    background: var(--bg-alt);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 0.8rem 1.2rem;
    margin-bottom: 1.2rem;
    font-size: 0.92rem;
    color: #444;
    line-height: 1.6;
    font-style: italic;
  }
  
  /* ── Video Grids ── */
  .video-row {
    display: grid; gap: 1rem;
    margin-bottom: 1rem;
  }
  .video-row.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .video-row.cols-4 { grid-template-columns: repeat(4, 1fr); }
  .video-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
  
  .video-card {
    background: #fff; border-radius: var(--radius);
    box-shadow: var(--shadow); overflow: hidden;
    transition: transform 0.2s;
  }
  .video-card:hover { transform: translateY(-3px); }
  .video-wrapper {
    position: relative;
  }
  .video-card video {
    width: 100%; display: block; aspect-ratio: 16/9;
    object-fit: cover; background: #000;
  }
  .video-status {
    position: absolute; top: 6px; right: 6px;
    width: 20px; height: 20px;
    border-radius: 50%;
    font-size: 0.7rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    pointer-events: none; line-height: 1;
  }
  .video-status.correct {
    background: rgba(39, 174, 96, 0.9); color: #fff;
  }
  .video-status.failure {
    background: rgba(192, 57, 43, 0.9); color: #fff;
  }
  .video-status.partial {
    background: rgba(127, 140, 141, 0.9); color: #fff;
  }
  .video-card .video-label {
    padding: 0.5rem 0.8rem; font-size: 0.82rem;
    color: var(--text-light); text-align: center;
    font-weight: 600;
  }
  .video-card .video-prompt {
    padding: 0 0.8rem 0.6rem; font-size: 0.78rem;
    color: var(--text-light); text-align: center;
    font-style: italic;
  }

  /* ── Status Legend ── */
  .status-legend {
    display: flex;
    justify-content: center;
    gap: 1.8rem;
    margin-top: 1rem;
    flex-wrap: wrap;
  }
  .legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: var(--text-light);
    font-weight: 500;
  }
  .legend-item .video-status {
    position: static;
    flex-shrink: 0;
  }

  /* ── Shared Prompt Row (between Forward / Reverse) ── */
  .prompt-row {
    display: grid;
    gap: 1rem;
    margin: 0.2rem 0 0.5rem;
  }
  .prompt-row.cols-4 { grid-template-columns: repeat(4, 1fr); }
  .prompt-cell {
    font-size: 0.78rem;
    color: #555;
    text-align: center;
    font-style: italic;
    line-height: 1.4;
    padding: 0.3rem 0.5rem;
  }
  
  .video-group-label {
    text-align: center; font-weight: 700; font-size: 1rem;
    color: var(--primary); margin: 1.5rem 0 0.8rem;
    padding: 0.4rem 0;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
    left: 50%; position: relative; transform: translateX(-50%);
  }
  
  /* ── Image Grids ── */
  .image-row {
    display: grid; gap: 1rem;
    margin-bottom: 1rem;
  }
  .image-row.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .image-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
  
  /* Custom Layouts */
  .image-row.equal-height-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  .image-row.equal-height-row .image-card {
    width: auto;
    flex: 0 1 auto;
  }
  .image-row.equal-height-row img {
    height: 300px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
  }
  
  .image-row.vertical-stack {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 850px;
    margin: 0 auto 1rem;
  }
  .image-row.vertical-stack .image-card {
    width: 100%;
  }
  .image-row.vertical-stack img {
    width: 100%;
    height: auto;
  }
  
  .image-card {
    background: #fff; border-radius: var(--radius);
    box-shadow: var(--shadow); overflow: hidden;
    transition: transform 0.2s;
  }
  .image-card:hover { transform: translateY(-3px); }
  .image-card img {
    width: 100%; display: block;
    object-fit: cover;
  }
  
  /* ── Tables ── */
  .table-wrapper {
    overflow-x: auto; border-radius: var(--radius);
    box-shadow: var(--shadow); background: #fff;
    margin-bottom: 1.5rem;
  }
  table {
    width: 100%; border-collapse: collapse;
    font-size: 0.88rem;
  }
  thead th {
    background: var(--primary); color: #fff;
    padding: 0.75rem 1rem; text-align: center;
    font-weight: 600; white-space: nowrap;
    cursor: pointer; user-select: none;
    position: relative;
  }
  thead th:hover { background: #34495e; }
  thead th.sort-asc::after { content: ' ▲'; font-size: 0.7rem; }
  thead th.sort-desc::after { content: ' ▼'; font-size: 0.7rem; }
  tbody tr { transition: background 0.15s; }
  tbody tr:nth-child(even) { background: var(--bg-alt); }
  tbody tr:hover { background: #eaf2fb; }
  tbody td {
    padding: 0.65rem 1rem; text-align: center;
    border-bottom: 1px solid var(--border);
  }
  tbody td:first-child { text-align: left; font-weight: 600; }
  .rank-1 td:first-child { color: #c0392b; }
  .rank-2 td:first-child { color: #2980b9; }
  .rank-3 td:first-child { color: #27ae60; }
  .rank-badge {
    display: inline-block; width: 24px; height: 24px;
    border-radius: 50%; font-size: 0.72rem; font-weight: 700;
    line-height: 24px; text-align: center; color: #fff;
    margin-right: 0.4rem;
  }
  .rank-badge.gold { background: var(--gold); color: #333; }
  .rank-badge.silver { background: var(--silver); }
  .rank-badge.bronze { background: var(--bronze); }
  .rank-badge.normal { background: var(--border); color: var(--text); }
  
  td.highlight-best {
    font-weight: 700; color: #c0392b;
  }
  tr.human-row {
    background: #fef9e7 !important;
    font-style: italic;
  }
  
  /* ── Tabs for dataset selection ── */
  .tab-bar {
    display: flex; gap: 0.4rem; margin-bottom: 1rem;
    flex-wrap: wrap; justify-content: center;
  }
  .tab-btn {
    padding: 0.45rem 1.1rem; border: 2px solid var(--border);
    background: #fff; border-radius: 20px; cursor: pointer;
    font-size: 0.85rem; font-weight: 600; color: var(--text-light);
    transition: all 0.2s;
  }
  .tab-btn:hover { border-color: var(--accent); color: var(--accent); }
  .tab-btn.active {
    background: var(--accent); color: #fff;
    border-color: var(--accent);
  }
  
  /* ── Ranking Sub-tabs ── */
  .ranking-tabs {
    display: flex; gap: 0; margin-bottom: 1.5rem;
    justify-content: center;
    border-bottom: 2px solid var(--border);
  }
  .ranking-tab {
    padding: 0.7rem 1.8rem; cursor: pointer;
    font-size: 0.95rem; font-weight: 600;
    color: var(--text-light); border-bottom: 3px solid transparent;
    transition: all 0.2s; margin-bottom: -2px;
  }
  .ranking-tab:hover { color: var(--accent); }
  .ranking-tab.active {
    color: var(--accent); border-bottom-color: var(--accent);
  }
  .ranking-panel { display: none; }
  .ranking-panel.active { display: block; }
  
  
  /* ── View Toggle ── */
  .view-toggle {
    display: flex; justify-content: center; gap: 0.5rem;
    margin-bottom: 1.5rem;
  }
  .view-btn {
    padding: 0.4rem 1rem;
    background: #fff; border: 1px solid var(--border);
    border-radius: 4px; cursor: pointer;
    font-size: 0.85rem; color: var(--text-light);
    transition: all 0.2s;
  }
  .view-btn:hover { border-color: var(--accent); color: var(--accent); }
  .view-btn.active {
    background: var(--accent); color: #fff; border-color: var(--accent);
  }
  
  /* ── Chart Styles ── */
  .chart-wrapper {
    background: #fff; padding: 1.5rem 1.5rem 1rem;
    border-radius: var(--radius); box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
  }
  .chart-row {
    display: flex; align-items: center; margin-bottom: 0.6rem;
    font-size: 0.88rem;
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    transition: background 0.15s;
  }
  .chart-row:hover { background: #eaf2fb; }
  .chart-row-human { background: #fef9e7 !important; font-style: italic; }
  .chart-rank {
    width: 36px; flex-shrink: 0; text-align: center;
  }
  .chart-label {
    width: 190px; flex-shrink: 0;
    text-align: right; padding-right: 1rem;
    font-weight: 600; color: var(--primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    font-size: 0.84rem;
  }
  .chart-bar-container {
    flex-grow: 1; position: relative;
    height: 26px; background: var(--bg-alt);
    border-radius: 4px; overflow: hidden;
  }
  .chart-bar {
    height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-dark));
    border-radius: 4px; transition: width 0.6s ease;
    display: flex; align-items: center; justify-content: flex-end;
    padding-right: 0.5rem; color: #fff; font-size: 0.75rem; font-weight: 700;
    min-width: 40px;
  }
  .chart-bar.human { background: linear-gradient(90deg, #f6e58d, var(--gold)); color: #333; }
  .chart-bar.negative { background: linear-gradient(90deg, var(--bronze), #e74c3c); justify-content: flex-start; padding-left: 0.5rem; }

  /* Diverging Bar Chart (CCI) */
  .chart-bar-container.diverging {
    background: transparent; overflow: visible;
  }
  .chart-bar-container.diverging::before {
    content: ''; position: absolute; left: var(--center-pct, 50%); top: -5px; bottom: -5px;
    width: 2px; background: #999; z-index: 0;
  }
  .chart-bar.diverging-bar {
    position: absolute; top: 0; bottom: 0;
    border-radius: 4px;
    min-width: 0;
  }
  .chart-value-label {
    font-size: 0.78rem; font-weight: 600; margin-left: 0.5rem; color: var(--text);
  }
  
  /* ── TL;DR Box ── */
  .tldr-box {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.2rem 1.6rem;
    background: linear-gradient(135deg, #eaf6ff 0%, #f0f0ff 100%);
    border-left: 5px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 1rem;
    line-height: 1.8;
    color: #333;
    box-shadow: var(--shadow);
  }

  /* ── Abstract / Text Blocks ── */
  .abstract-text {
    font-size: 1rem; line-height: 1.9;
    max-width: 900px; margin: 0 auto;
    text-align: justify;
    color: #444;
  }
  
  /* ── Contribution List ── */
  .contribution-list {
    max-width: 900px; margin: 0 auto;
    list-style: none; counter-reset: contrib;
  }
  .contribution-list li {
    counter-increment: contrib;
    padding: 1rem 1rem 1rem 3.5rem;
    margin-bottom: 0.8rem;
    background: #fff; border-radius: var(--radius);
    box-shadow: var(--shadow); position: relative;
    font-size: 0.95rem;
  }
  .contribution-list li::before {
    content: counter(contrib);
    position: absolute; left: 1rem; top: 1rem;
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--accent); color: #fff;
    font-weight: 700; font-size: 0.85rem;
    display: flex; align-items: center; justify-content: center;
  }
  
  /* ── Pipeline / Framework image ── */
  .framework-img {
    width: 100%; max-width: 900px; margin: 0 auto;
    display: block; border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  
  /* ── Figure placeholder ── */
  .figure-placeholder {
    width: 100%; max-width: 900px; margin: 0 auto 1.5rem;
    background: var(--bg-alt); border: 2px dashed var(--border);
    border-radius: var(--radius); padding: 3rem;
    text-align: center; color: var(--text-light);
    font-size: 0.95rem;
  }
  
  /* ── Overview Caption ── */
  .overview-caption {
    text-align: left;
    max-width: 900px;
    margin: 1.5rem auto 0;
    font-size: 0.95rem;
    color: #444;
  }
  .overview-caption p {
    margin-bottom: 0.8rem;
  }
  .overview-list {
    list-style: none;
    padding: 0;
  }
  .overview-list li {
    margin-bottom: 0.8rem;
    padding-left: 0;
  }
  .overview-list strong {
    color: var(--primary);
  }
  /* ── Citation ── */
  .citation-block {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.2rem 1.5rem;
    background: #1e1e2e;
    color: #cdd6f4;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    font-size: 0.88rem;
    line-height: 1.7;
    overflow-x: auto;
    white-space: pre;
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
  }
  .citation-block code {
    font-family: inherit;
    color: inherit;
  }

  footer {
    text-align: center; padding: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-light); font-size: 0.82rem;
  }

  /* ── Responsive ── */

  /* Tablet */
  @media (max-width: 900px) {
    .chart-label { width: 130px; font-size: 0.76rem; }
    .chart-wrapper { padding: 1rem; }
  }

  /* Mobile */
  @media (max-width: 768px) {
    .container { padding: 0 1rem; }
    section { padding: 2rem 0; }

    /* Nav: scrollable links */
    nav { padding: 0 1rem; }
    nav .nav-inner { height: auto; flex-direction: column; padding: 0.5rem 0; gap: 0.3rem; }
    nav .nav-title { font-size: 0.85rem; max-width: none; }
    nav .nav-links {
      display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch;
      gap: 0.15rem; width: 100%; padding-bottom: 0.3rem;
      scrollbar-width: none;
    }
    nav .nav-links::-webkit-scrollbar { display: none; }
    nav .nav-links a { font-size: 0.7rem; padding: 0.2rem 0.5rem; white-space: nowrap; flex-shrink: 0; }

    /* Hero */
    .hero { padding-top: 110px; padding-bottom: 1.5rem; }
    .hero h1 { font-size: 1.3rem; line-height: 1.4; }
    .hero .publication-authors { font-size: 0.88rem; line-height: 1.7; }
    .hero .publication-authors .author-block { margin: 0 0.1rem; }
    .hero .publication-authors.affiliations { font-size: 0.82rem; }
    .hero .links { gap: 0.5rem; }
    .hero .links a { padding: 0.4rem 0.9rem; font-size: 0.82rem; }

    /* Section titles */
    .section-title { font-size: 1.25rem; margin-bottom: 1.2rem; }

    /* Video grids */
    .video-row.cols-3 { grid-template-columns: 1fr; }
    .video-row.cols-4 { grid-template-columns: repeat(2, 1fr); }
    .image-row.cols-3 { grid-template-columns: 1fr; }

    /* Prompt row */
    .prompt-row.cols-4 { grid-template-columns: repeat(2, 1fr); }
    .prompt-cell { font-size: 0.72rem; }

    /* Tabs */
    .tab-bar { gap: 0.3rem; }
    .tab-btn { padding: 0.35rem 0.8rem; font-size: 0.78rem; }

    /* Ranking tabs */
    .ranking-tabs { gap: 0; }
    .ranking-tab { padding: 0.5rem 1rem; font-size: 0.82rem; }

    /* View toggle */
    .view-btn { padding: 0.35rem 0.8rem; font-size: 0.78rem; }

    /* Tables: horizontal scroll */
    .table-wrapper { margin: 0 -1rem 1.5rem; border-radius: 0; }
    table { font-size: 0.75rem; }
    thead th { padding: 0.55rem 0.6rem; font-size: 0.73rem; }
    tbody td { padding: 0.5rem 0.6rem; }

    /* Charts */
    .chart-wrapper { padding: 0.8rem; }
    .chart-label { width: 100px; font-size: 0.7rem; padding-right: 0.5rem; }
    .chart-rank { width: 28px; }
    .rank-badge { width: 20px; height: 20px; line-height: 20px; font-size: 0.65rem; margin-right: 0.2rem; }
    .chart-bar { font-size: 0.65rem; min-width: 30px; padding-right: 0.3rem; }
    .chart-value-label { font-size: 0.68rem; }

    /* TL;DR */
    .tldr-box { padding: 1rem 1.2rem; font-size: 0.9rem; }

    /* Abstract */
    .abstract-text { font-size: 0.92rem; text-align: left; }

    /* Contribution */
    .contribution-list li { padding: 0.8rem 0.8rem 0.8rem 3rem; font-size: 0.88rem; }

    /* Figure placeholder / overview */
    .figure-placeholder { padding: 1.5rem 1rem; }
    .overview-caption { font-size: 0.85rem; }

    /* Leaderboard notice */
    .leaderboard-notice { padding: 1rem 1.2rem; font-size: 0.88rem; }

    /* Video embed */
    .video-embed { padding-bottom: 56.25%; }

    /* Image equal height */
    .image-row.equal-height-row img { height: 200px; }
  }

  /* Small phones */
  @media (max-width: 480px) {
    .hero h1 { font-size: 1.1rem; }
    .hero .publication-authors { font-size: 0.8rem; }
    .hero .links { flex-direction: column; align-items: center; }
    .hero .links a { width: 100%; text-align: center; }

    .video-row.cols-4 { grid-template-columns: 1fr; }
    .prompt-row.cols-4 { grid-template-columns: 1fr; }

    .chart-label { width: 80px; font-size: 0.65rem; }
    .chart-bar-container { height: 22px; }

    .ranking-tab { padding: 0.4rem 0.7rem; font-size: 0.75rem; }

    table { font-size: 0.68rem; }
    thead th { padding: 0.4rem 0.4rem; }
    tbody td { padding: 0.4rem 0.4rem; }
  }
  
  .divider-row {
    display: flex; align-items: center; gap: 1rem;
    margin: 1.5rem 0 0.8rem;
  }
  .divider-row span {
    font-weight: 700; font-size: 1rem; color: var(--primary);
    white-space: nowrap;
  }
  .divider-row::before, .divider-row::after {
    content: ''; flex: 1; height: 2px; background: var(--border);
  }
  
  .video-section-header {
    display: grid; gap: 1rem; margin-bottom: 0.5rem;
    text-align: center; font-weight: 700; color: var(--accent);
    font-size: 0.9rem;
  }
  .video-section-header.cols-4 { grid-template-columns: repeat(4, 1fr); }
  .video-section-header.cols-2 { grid-template-columns: repeat(2, 1fr); }

  /* ── Video Embed (YouTube) ── */
  .video-embed {
    position: relative;
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    padding-bottom: 48.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  .video-embed iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius);
  }