/* ===== CSS Variables ===== */
    :root {
      --bg-primary: #FFFFFF;
      --bg-secondary: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-card-hover: #F1F5F9;
      --border: #E2E8F0;
      --border-accent: #CBD5E1;
      --text-primary: #0F172A;
      --text-secondary: #475569;
      --text-muted: #94A3B8;
      --accent-orange: #C2410C;
      --accent-amber: #B45309;
      --accent-blue: #1D4ED8;
      --accent-cyan: #0E7490;
      --accent-red: #B91C1C;
      --accent-purple: #6D28D9;
      --grid-color: rgba(15, 23, 42, 0.025);
      --grid-line: rgba(15, 23, 42, 0.05);
      --card-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
      --card-shadow-hover: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.05);
      --font-display: 'Crimson Pro', 'Source Serif 4', Georgia, serif;
      --font-mono: 'IBM Plex Mono', 'SF Mono', Menlo, monospace;
      --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      --radius: 4px;
      --radius-lg: 8px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      font-family: var(--font-body);
      background: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.65;
      overflow-x: hidden;
      font-size: 16px;
    }

    /* Academic card surfaces — subtle 1px shadow on white */
    .release-panel,
    .dataset-figure,
    .pipeline-card,
    .taxonomy-card,
    .metric-card,
    .finding-card,
    .download-card,
    .flow-node,
    .flow-branch-item,
    .citation-block,
    .motivation-callout {
      box-shadow: var(--card-shadow);
    }
    .release-panel:hover,
    .dataset-figure:hover,
    .pipeline-card:hover,
    .taxonomy-card:hover,
    .metric-card:hover,
    .finding-card:hover,
    .flow-node:hover,
    .flow-branch-item:hover {
      box-shadow: var(--card-shadow-hover);
    }

    /* Blueprint grid disabled — keep markup-compatible stub */
    .blueprint-grid { display: none; }

    /* ===== Particle Canvas ===== */
    #particles {
      position: fixed;
      inset: 0;
      z-index: 1;
      pointer-events: none;
      opacity: 0.35;
    }

    /* ===== Layout ===== */
    .content-wrapper {
      position: relative;
      z-index: 2;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    section {
      padding: 6rem 0;
    }

    /* ===== Navigation ===== */
    nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      padding: 1rem 0;
      backdrop-filter: blur(20px);
      background: rgba(255, 255, 255, 0.85);
      border-bottom: 1px solid var(--border);
      transition: all 0.3s ease;
    }

    nav .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .nav-logo {
      display: inline-flex;
      align-items: center;
      text-decoration: none;
      position: relative;
      flex: 0 0 auto;
    }

    .nav-logo img {
      display: block;
      width: 168px;
      height: auto;
    }

    .nav-logo::after {
      content: '';
      position: absolute;
      left: 0;
      right: 0;
      bottom: -6px;
      height: 1px;
      background: var(--accent-orange);
      opacity: 0;
      transform: scaleX(0.45);
      transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .nav-logo.active::after {
      opacity: 1;
      transform: scaleX(1);
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
    }

    .nav-links a {
      font-family: var(--font-mono);
      font-size: 0.85rem;
      font-weight: 400;
      color: var(--text-secondary);
      text-decoration: none;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      transition: color 0.2s;
      position: relative;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 1px;
      background: var(--accent-orange);
      transition: width 0.3s ease;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--text-primary);
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    /* ===== Hero ===== */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      padding-top: 5rem;
    }

    .home-hero {
      min-height: auto;
      padding-top: 9rem;
      padding-bottom: 4rem;
      border-bottom: 1px solid var(--border);
    }

    .hero-content {
      max-width: 900px;
    }

    .home-hero .hero-content {
      max-width: 980px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.4rem 1rem;
      background: rgba(255, 107, 53, 0.1);
      border: 1px solid rgba(255, 107, 53, 0.25);
      border-radius: 100px;
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--accent-orange);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 2rem;
      opacity: 0;
      animation: fadeInUp 0.8s ease forwards;
    }

    .hero-badge .dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-orange);
      animation: pulse-dot 2s ease-in-out infinite;
    }

    .hero h1 {
      font-family: var(--font-display);
      font-size: clamp(2rem, 4.2vw, 3.5rem);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -0.02em;
      margin-bottom: 1.25rem;
      opacity: 0;
      animation: fadeInUp 0.8s ease 0.15s forwards;
    }

    .hero h1 .highlight {
      background: linear-gradient(135deg, var(--accent-orange), var(--accent-amber));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-subtitle {
      font-size: 1.25rem;
      color: var(--text-secondary);
      max-width: 780px;
      line-height: 1.7;
      margin-bottom: 2.5rem;
      opacity: 0;
      animation: fadeInUp 0.8s ease 0.3s forwards;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      opacity: 0;
      animation: fadeInUp 0.8s ease 0.45s forwards;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.85rem 1.75rem;
      border-radius: var(--radius);
      font-family: var(--font-mono);
      font-size: 0.9rem;
      font-weight: 500;
      text-decoration: none;
      letter-spacing: 0.02em;
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
    }

    .btn-primary {
      background: var(--accent-orange);
      color: #fff;
    }

    .btn-primary:hover {
      background: #ff8355;
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(255, 107, 53, 0.3);
    }

    .btn-secondary {
      background: transparent;
      color: var(--text-secondary);
      border: 1px solid var(--border-accent);
    }

    .btn-secondary:hover {
      color: var(--text-primary);
      border-color: var(--text-secondary);
      transform: translateY(-2px);
    }

    .btn-icon,
    .btn img {
      width: 1rem;
      height: 1rem;
      flex: 0 0 auto;
      object-fit: contain;
    }

    .hero-stats {
      display: flex;
      gap: 3rem;
      margin-top: 3rem;
      padding-top: 2rem;
      border-top: 1px solid var(--border);
      opacity: 0;
      animation: fadeInUp 0.8s ease 0.6s forwards;
    }

    .hero-stat-value {
      font-family: var(--font-display);
      font-size: 2.5rem;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: -0.02em;
    }

    .hero-stat-value .unit {
      font-size: 1.2rem;
      color: var(--accent-orange);
      margin-left: 2px;
    }

    .hero-stat-label {
      font-family: var(--font-mono);
      font-size: 0.82rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-top: 0.25rem;
    }

    /* ===== Section Headers ===== */
    .section-header {
      margin-bottom: 4rem;
    }

    .section-tag {
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--accent-orange);
      text-transform: uppercase;
      letter-spacing: 0.12em;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }

    .section-tag::before {
      content: '';
      width: 24px;
      height: 1px;
      background: var(--accent-orange);
    }

    .section-title {
      font-family: var(--font-display);
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.15;
    }

    .section-desc {
      color: var(--text-secondary);
      font-size: 1.1rem;
      max-width: 600px;
      margin-top: 1rem;
    }

    .section-desc-wide {
      max-width: 920px;
    }

    /* ===== Motivation ===== */
    .motivation-section {
      border-bottom: 1px solid var(--border);
      padding-bottom: 5rem;
    }

    .motivation-content {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 400px;
      gap: 3.75rem;
      align-items: start;
    }

    .motivation-text p {
      color: var(--text-secondary);
      font-size: 1.05rem;
      line-height: 1.8;
      margin-bottom: 1.25rem;
    }

    .motivation-text p:last-child {
      margin-bottom: 0;
    }

    .motivation-text strong {
      color: var(--text-primary);
    }

    .motivation-text em {
      color: var(--accent-amber);
      font-style: normal;
    }

    .motivation-highlight {
      padding: 1rem 1.15rem;
      border-left: 3px solid var(--accent-orange);
      background: var(--bg-secondary);
      border-radius: var(--radius);
      color: var(--text-primary) !important;
      font-weight: 600;
    }

    .motivation-sample {
      margin-top: 1.75rem;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--bg-card);
      box-shadow: var(--card-shadow);
    }

    .motivation-sample img {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      display: block;
    }

    .motivation-sample figcaption {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--text-muted);
      line-height: 1.6;
      padding: 0.8rem 1rem;
      border-top: 1px solid var(--border);
    }

    .motivation-callout {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-left: 3px solid var(--accent-red);
      border-radius: var(--radius-lg);
      padding: 2rem 2.1rem;
      position: sticky;
      top: 6rem;
    }

    .motivation-callout-title {
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 600;
      color: var(--accent-red);
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .motivation-callout-stat {
      display: grid;
      grid-template-columns: 96px 1fr;
      align-items: center;
      gap: 0.85rem;
      margin-bottom: 1.1rem;
      padding-bottom: 1.1rem;
      border-bottom: 1px solid var(--border);
    }

    .motivation-callout-stat:nth-of-type(3) {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }

    .motivation-callout-num {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      font-family: var(--font-display);
      font-size: 2rem;
      font-weight: 700;
      line-height: 1;
    }

    .motivation-callout-num svg {
      width: 1.35rem;
      height: 1.35rem;
      flex: 0 0 auto;
      stroke: currentColor;
    }

    .motivation-callout-desc {
      font-family: var(--font-body);
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.45;
    }

    .motivation-ref {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      color: var(--text-muted);
      margin-top: 1.3rem;
      padding-top: 1.15rem;
      border-top: 1px solid var(--border);
      line-height: 1.6;
    }

    @media (max-width: 768px) {
      .motivation-content {
        grid-template-columns: 1fr;
      }
      .motivation-callout {
        position: static;
      }
    }

    @media (max-width: 480px) {
      .motivation-callout {
        padding: 1.5rem;
      }
      .motivation-callout-stat {
        grid-template-columns: 1fr;
        gap: 0.45rem;
      }
    }

    /* ===== Dataset Overview ===== */
    .source-reference-list {
      display: grid;
      gap: 1rem;
    }

    .source-reference {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 1.4rem 1.5rem;
      box-shadow: var(--card-shadow);
    }

    .source-citation-kicker {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--accent-orange);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 0.45rem;
    }

    .source-reference-text {
      color: var(--text-secondary);
      font-size: 0.98rem;
      line-height: 1.65;
    }

    .source-reference-text em {
      color: var(--text-primary);
    }

    .source-bibtex {
      margin-top: 0.9rem;
      border-top: 1px dashed var(--border);
      padding-top: 0.8rem;
    }

    .source-bibtex summary {
      width: fit-content;
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--accent-orange);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      cursor: pointer;
    }

    .source-bibtex pre {
      background: var(--bg-secondary);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      color: var(--text-secondary);
      font-family: var(--font-mono);
      font-size: 0.75rem;
      line-height: 1.55;
      margin-top: 0.75rem;
      overflow-x: auto;
      padding: 1rem;
      white-space: pre;
    }

    .release-summary {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 1rem;
      margin: 2.5rem 0;
    }

    .release-summary > div {
      border-top: 2px solid var(--accent-orange);
      padding-top: 1rem;
    }

    .release-summary-value {
      display: block;
      color: var(--text-primary);
      font-family: var(--font-display);
      font-size: 2rem;
      font-weight: 700;
      line-height: 1;
    }

    .release-summary-label {
      display: block;
      color: var(--text-muted);
      font-family: var(--font-mono);
      font-size: 0.76rem;
      letter-spacing: 0.08em;
      margin-top: 0.45rem;
      text-transform: uppercase;
    }

    .release-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }

    .release-panel {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }

    .release-panel-header {
      border-bottom: 1px solid var(--border);
      padding: 1.75rem 2rem;
    }

    .release-panel-header .section-tag {
      margin-bottom: 0.45rem;
    }

    .release-panel h3 {
      font-family: var(--font-display);
      font-size: 1.55rem;
      font-weight: 600;
      line-height: 1.2;
    }

    .table-scroll {
      overflow-x: auto;
      width: 100%;
    }

    .release-table {
      border-collapse: collapse;
      min-width: 720px;
      width: 100%;
    }

    .release-table th,
    .release-table td {
      border-bottom: 1px solid var(--border);
      padding: 0.85rem 1rem;
      text-align: left;
      vertical-align: top;
    }

    .release-table th {
      color: var(--text-primary);
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 700;
      white-space: nowrap;
    }

    .release-table td {
      color: var(--text-secondary);
      font-size: 0.94rem;
      line-height: 1.45;
    }

    .release-table code {
      color: var(--text-primary);
      font-family: var(--font-mono);
      font-size: 0.9em;
      white-space: nowrap;
    }

    .schema-table td:first-child,
    .schema-table td:nth-child(2),
    .schema-table td:first-child {
      white-space: nowrap;
    }

    .release-table tbody tr:last-child td,
    .release-table tfoot th {
      border-bottom: 0;
    }

    .release-table tfoot th {
      border-top: 2px solid var(--text-primary);
      padding-top: 0.75rem;
    }

    .composition-plot {
      background: var(--bg-card);
      border-bottom: 1px solid var(--border);
      margin: 0;
      padding: 1.25rem 1.5rem;
    }

    .composition-plot img {
      display: block;
      height: auto;
      width: 100%;
    }

    .dataset-figure {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      margin: 0;
      overflow: hidden;
    }

    .dataset-figure img {
      display: block;
      height: auto;
      width: 100%;
    }

    .dataset-hero-figure {
      margin: 0 0 2.75rem;
    }

    .dataset-figure figcaption {
      border-top: 1px solid var(--border);
      color: var(--text-secondary);
      font-size: 0.95rem;
      padding: 1rem 1.25rem;
    }

    /* ===== Augmentation Pipeline ===== */
    .pipeline-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
    }

    .pipeline-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .pipeline-card:hover {
      border-color: var(--border-accent);
      transform: translateY(-3px);
    }

    /* ===== Image Comparison Slider ===== */
    .compare-slider {
      position: relative;
      height: 260px;
      overflow: hidden;
      cursor: col-resize;
      user-select: none;
      -webkit-user-select: none;
    }

    .compare-slider img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      pointer-events: none;
    }

    .compare-slider .compare-before {
      z-index: 1;
      clip-path: inset(0 50% 0 0);
    }

    .compare-slider .compare-after {
      z-index: 0;
    }

    .compare-handle {
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 3px;
      background: var(--accent-orange);
      z-index: 3;
      transform: translateX(-50%);
      pointer-events: none;
    }

    .compare-handle::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 2px solid var(--accent-orange);
      box-shadow: 0 2px 12px rgba(0,0,0,0.4);
      pointer-events: auto;
      cursor: col-resize;
    }

    .compare-handle::after {
      content: '\2194';
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      color: var(--accent-orange);
      font-size: 1rem;
      line-height: 1;
      pointer-events: none;
    }

    .compare-label {
      position: absolute;
      bottom: 10px;
      z-index: 4;
      font-family: var(--font-mono);
      font-size: 0.72rem;
      color: #fff;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      background: rgba(255, 255, 255, 0.88);
      padding: 3px 10px;
      border-radius: 3px;
      pointer-events: none;
    }

    .compare-label-before { left: 10px; }
    .compare-label-after { right: 10px; }

    .pipeline-info {
      padding: 1.5rem;
    }

    .pipeline-method-tag {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--accent-cyan);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 0.5rem;
    }

    .pipeline-info h3 {
      font-family: var(--font-display);
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
    }

    .pipeline-info p {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.55;
    }

    .pipeline-stats {
      display: flex;
      gap: 1.5rem;
      margin-top: 1rem;
      padding-top: 1rem;
      border-top: 1px solid var(--border);
    }

    .pipeline-stat {
      font-family: var(--font-mono);
      font-size: 0.85rem;
    }

    .pipeline-stat strong {
      color: var(--accent-amber);
    }

    .pipeline-stat span {
      color: var(--text-muted);
      font-size: 0.78rem;
    }

    /* ===== Condition Taxonomy ===== */
    #taxonomy {
      position: relative;
      overflow: hidden;
    }

    #taxonomy::before {
      content: '';
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(15, 23, 42, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(15, 23, 42, 0.035) 1px, transparent 1px);
      background-size: 44px 44px;
      -webkit-mask-image: linear-gradient(180deg, transparent, #000 18%, #000 82%, transparent);
      mask-image: linear-gradient(180deg, transparent, #000 18%, #000 82%, transparent);
      pointer-events: none;
    }

    #taxonomy .container {
      position: relative;
      z-index: 1;
    }

    #taxonomy .section-header {
      margin-bottom: 2rem;
    }

    .taxonomy-summary {
      display: grid;
      grid-template-columns: 1fr 1fr 1.35fr;
      gap: 1px;
      margin-bottom: 1.25rem;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--border);
      box-shadow: var(--card-shadow);
    }

    .taxonomy-summary-item {
      background: rgba(255, 255, 255, 0.92);
      padding: 1rem 1.25rem;
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 1rem;
    }

    .taxonomy-summary-value {
      font-family: var(--font-display);
      font-size: 2rem;
      font-weight: 700;
      line-height: 1;
      color: var(--text-primary);
    }

    .taxonomy-summary-label {
      font-family: var(--font-mono);
      font-size: 0.76rem;
      color: var(--text-muted);
      letter-spacing: 0.08em;
      line-height: 1.4;
      text-align: right;
      text-transform: uppercase;
    }

    .taxonomy-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 1rem;
    }

    .taxonomy-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 1.35rem;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      min-height: 238px;
      display: flex;
      flex-direction: column;
    }

    .taxonomy-card::before {
      content: '';
      position: absolute;
      inset: 0;
      border-top: 3px solid var(--taxonomy-accent, var(--accent-orange));
      background: linear-gradient(180deg, var(--taxonomy-tint, rgba(194, 65, 12, 0.06)), transparent 42%);
      opacity: 0.85;
      pointer-events: none;
    }

    .taxonomy-card:hover {
      border-color: var(--taxonomy-border, var(--border-accent));
      transform: translateY(-2px);
    }

    .taxonomy-card-weather {
      --taxonomy-accent: var(--accent-blue);
      --taxonomy-border: rgba(29, 78, 216, 0.32);
      --taxonomy-tint: rgba(29, 78, 216, 0.07);
    }

    .taxonomy-card-lighting {
      --taxonomy-accent: var(--accent-amber);
      --taxonomy-border: rgba(180, 83, 9, 0.34);
      --taxonomy-tint: rgba(180, 83, 9, 0.08);
    }

    .taxonomy-card-compound {
      --taxonomy-accent: var(--accent-purple);
      --taxonomy-border: rgba(109, 40, 217, 0.32);
      --taxonomy-tint: rgba(109, 40, 217, 0.07);
    }

    .taxonomy-card-scale {
      --taxonomy-accent: var(--accent-cyan);
      --taxonomy-border: rgba(14, 116, 144, 0.32);
      --taxonomy-tint: rgba(14, 116, 144, 0.07);
    }

    .taxonomy-icon {
      width: 42px;
      height: 42px;
      border-radius: var(--radius);
      margin-bottom: 1rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--taxonomy-tint, rgba(194, 65, 12, 0.08));
      border: 1px solid var(--taxonomy-border, var(--border));
      position: relative;
      z-index: 1;
    }

    .taxonomy-icon svg {
      width: 24px;
      height: 24px;
    }

    .taxonomy-card h3 {
      font-family: var(--font-display);
      font-size: 1.05rem;
      font-weight: 600;
      line-height: 1.25;
      margin-bottom: 0.9rem;
      min-height: 2.6em;
      position: relative;
      z-index: 1;
    }

    .taxonomy-labels {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      margin-top: auto;
      position: relative;
      z-index: 1;
    }

    .taxonomy-label {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      padding: 0.28rem 0.55rem;
      border-radius: 3px;
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid var(--border);
      color: var(--text-secondary);
      letter-spacing: 0.02em;
    }

    .taxonomy-count {
      position: absolute;
      top: 1.1rem;
      right: 1.1rem;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--taxonomy-accent, var(--accent-orange));
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--taxonomy-border, var(--border));
      border-radius: 100px;
      padding: 0.2rem 0.55rem;
      z-index: 1;
    }

    /* ===== Validation Metrics ===== */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 2rem;
      text-align: center;
      transition: all 0.3s ease;
    }

    .metric-card:hover {
      border-color: var(--border-accent);
      transform: translateY(-3px);
    }

    .metric-ring {
      width: 120px;
      height: 120px;
      margin: 0 auto 1.5rem;
      position: relative;
    }

    .metric-ring svg {
      transform: rotate(-90deg);
    }

    .metric-ring-bg {
      fill: none;
      stroke: var(--border);
      stroke-width: 6;
    }

    .metric-ring-fill {
      fill: none;
      stroke-width: 6;
      stroke-linecap: round;
      transition: stroke-dashoffset 1.5s ease;
    }

    .metric-ring-value {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 700;
    }

    .metric-card h3 {
      font-family: var(--font-display);
      font-size: 1.1rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
    }

    .metric-card p {
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.5;
    }

    .metric-detail {
      margin-top: 1.25rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--border);
    }

    .metric-bar-row {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-bottom: 0.6rem;
    }

    .metric-bar-label {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--text-muted);
      width: 80px;
      text-align: right;
      flex-shrink: 0;
    }

    .metric-bar-track {
      flex: 1;
      height: 4px;
      background: var(--border);
      border-radius: 2px;
      overflow: hidden;
    }

    .metric-bar-fill {
      height: 100%;
      border-radius: 2px;
      transition: width 1.5s ease;
    }

    .metric-bar-value {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--text-secondary);
      width: 40px;
      flex-shrink: 0;
    }

    /* ===== Download Section ===== */
    .download-section {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .download-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
    }

    .download-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      display: flex;
      flex-direction: column;
    }

    .download-card h3 {
      font-family: var(--font-display);
      font-size: 1.3rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
    }

    .download-card p {
      color: var(--text-secondary);
      font-size: 1rem;
      margin-bottom: 1.5rem;
      flex: 1;
    }

    .license-tag {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--accent-cyan);
      padding: 0.35rem 0.75rem;
      background: rgba(0, 212, 170, 0.08);
      border: 1px solid rgba(0, 212, 170, 0.2);
      border-radius: var(--radius);
      margin-bottom: 1.25rem;
      width: fit-content;
    }

    /* ===== Gallery CTA ===== */
    .gallery-cta {
      display: grid;
      grid-template-columns: 340px 1fr;
      gap: 2rem;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      text-decoration: none;
      color: inherit;
      transition: all 0.3s ease;
    }

    .gallery-cta:hover {
      border-color: var(--accent-orange);
      transform: translateY(-3px);
      box-shadow: 0 12px 40px rgba(255, 107, 53, 0.1);
    }

    .gallery-cta-preview {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2px;
      overflow: hidden;
    }

    .gallery-cta-preview img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      aspect-ratio: 4/3;
      display: block;
      transition: transform 0.4s ease;
    }

    .gallery-cta:hover .gallery-cta-preview img { transform: scale(1.05); }

    .gallery-cta-content {
      padding: 2rem 2rem 2rem 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .gallery-cta-content h3 {
      font-family: var(--font-display);
      font-size: 1.3rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
    }

    .gallery-cta-content p {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.6;
      margin-bottom: 1.25rem;
    }

    .gallery-cta-link {
      font-family: var(--font-mono);
      font-size: 0.9rem;
      color: var(--accent-orange);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      transition: gap 0.2s;
    }

    .gallery-cta:hover .gallery-cta-link { gap: 0.75rem; }

    @media (max-width: 768px) {
      .gallery-cta { grid-template-columns: 1fr; }
      .gallery-cta-content { padding: 1.5rem; }
      .gallery-cta-preview { max-height: 200px; }
    }

    /* ===== (Gallery page styles moved to gallery.html) ===== */
    .gallery-tabs {
      display: flex;
      gap: 0.5rem;
      margin-bottom: 2rem;
      flex-wrap: wrap;
    }

    .gallery-tab {
      font-family: var(--font-mono);
      font-size: 0.8rem;
      padding: 0.5rem 1.25rem;
      border-radius: 100px;
      border: 1px solid var(--border);
      background: transparent;
      color: var(--text-secondary);
      cursor: pointer;
      transition: all 0.25s ease;
      letter-spacing: 0.04em;
    }

    .gallery-tab:hover {
      border-color: var(--border-accent);
      color: var(--text-primary);
    }

    .gallery-tab.active {
      background: var(--accent-orange);
      border-color: var(--accent-orange);
      color: #fff;
    }

    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1rem;
    }

    .gallery-item {
      aspect-ratio: 4/3;
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      cursor: pointer;
      border: 1px solid var(--border);
      transition: all 0.3s ease;
    }

    .gallery-item:hover {
      border-color: var(--accent-orange);
      transform: scale(1.03);
      z-index: 2;
    }

    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .gallery-item-visual {
      width: 100%;
      height: 100%;
      position: relative;
    }

    .tab-count {
      font-size: 0.72rem;
      opacity: 0.6;
      margin-left: 2px;
    }

    /* Lightbox */
    .lightbox {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 300;
      background: rgba(0, 0, 0, 0.92);
      backdrop-filter: blur(10px);
      align-items: center;
      justify-content: center;
      cursor: zoom-out;
    }

    .lightbox.open {
      display: flex;
    }

    .lightbox img {
      max-width: 90vw;
      max-height: 85vh;
      border-radius: var(--radius-lg);
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    }

    .lightbox-caption {
      position: absolute;
      bottom: 2rem;
      left: 50%;
      transform: translateX(-50%);
      font-family: var(--font-mono);
      font-size: 0.85rem;
      color: var(--text-secondary);
      background: rgba(255, 255, 255, 0.85);
      padding: 0.5rem 1.25rem;
      border-radius: 100px;
      white-space: nowrap;
    }

    .lightbox-close {
      position: absolute;
      top: 1.5rem;
      right: 2rem;
      background: none;
      border: none;
      color: var(--text-secondary);
      cursor: pointer;
      font-size: 1.5rem;
      transition: color 0.2s;
    }

    .lightbox-close:hover { color: var(--text-primary); }

    .gallery-item-label {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 0.75rem;
      background: linear-gradient(transparent, rgba(255, 255, 255, 0.96));
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
    }

    .gallery-item-label span {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--text-secondary);
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }

    .gallery-item-label .condition-tag {
      padding: 0.15rem 0.5rem;
      border-radius: 3px;
      font-size: 0.72rem;
    }

    /* Simulated image backgrounds for gallery items */
    .sim-original {
      background: linear-gradient(135deg, #2a3545 0%, #354560 40%, #2a3a50 70%, #1e2d40 100%);
    }
    .sim-original::before {
      content: '';
      position: absolute;
      bottom: 30%;
      left: 10%;
      width: 25%;
      height: 35%;
      background: rgba(255, 180, 50, 0.15);
      border-radius: 4px;
      border: 1px solid rgba(255, 180, 50, 0.2);
    }
    .sim-original::after {
      content: '';
      position: absolute;
      bottom: 30%;
      right: 15%;
      width: 15%;
      height: 25%;
      background: rgba(100, 200, 255, 0.1);
      border-radius: 4px;
      border: 1px solid rgba(100, 200, 255, 0.15);
    }

    .sim-rain {
      background: linear-gradient(180deg, #1a2535 0%, #0d1825 60%, #152030 100%);
    }
    .sim-rain::before {
      content: '';
      position: absolute;
      inset: 0;
      background: repeating-linear-gradient(
        100deg, transparent, transparent 3px,
        rgba(150, 200, 255, 0.06) 3px, rgba(150, 200, 255, 0.06) 4px
      );
      animation: rain-move 0.4s linear infinite;
    }
    .sim-rain::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 20%;
      background: linear-gradient(transparent, rgba(100, 160, 220, 0.08));
    }

    .sim-snow {
      background: linear-gradient(180deg, #202838 0%, #1a2535 60%, #252e40 100%);
    }
    .sim-snow::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        radial-gradient(1px 1px at 20% 15%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 50% 35%, rgba(255,255,255,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 80% 20%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(2px 2px at 30% 55%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 65%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 15% 80%, rgba(255,255,255,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 60% 85%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(2px 2px at 90% 50%, rgba(255,255,255,0.4) 0%, transparent 100%);
      animation: snow-drift 4s linear infinite;
    }

    .sim-night {
      background: linear-gradient(180deg, #060810 0%, #0a0e1a 50%, #080c15 100%);
    }
    .sim-night::before {
      content: '';
      position: absolute;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 200, 80, 0.35), rgba(255, 180, 60, 0.1) 50%, transparent 70%);
      top: 15%;
      right: 20%;
    }
    .sim-night::after {
      content: '';
      position: absolute;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 220, 150, 0.2), transparent 70%);
      top: 40%;
      left: 25%;
    }

    .sim-night-rain {
      background: linear-gradient(180deg, #08101a 0%, #0a1420 60%, #0c1525 100%);
    }
    .sim-night-rain::before {
      content: '';
      position: absolute;
      inset: 0;
      background: repeating-linear-gradient(
        95deg, transparent, transparent 4px,
        rgba(100, 160, 220, 0.04) 4px, rgba(100, 160, 220, 0.04) 5px
      );
      animation: rain-move 0.35s linear infinite;
    }
    .sim-night-rain::after {
      content: '';
      position: absolute;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 200, 100, 0.2), transparent 70%);
      top: 20%;
      right: 25%;
    }

    .sim-outpaint {
      background: linear-gradient(135deg, #1a2030, #202840);
      position: relative;
    }
    .sim-outpaint::before {
      content: '';
      position: absolute;
      top: 20%;
      left: 20%;
      right: 20%;
      bottom: 20%;
      background: linear-gradient(135deg, #2a3545, #354560);
      border: 1px dashed rgba(74, 158, 255, 0.3);
      border-radius: 4px;
    }
    .sim-outpaint::after {
      content: '';
      position: absolute;
      inset: 0;
      border: 2px dashed rgba(74, 158, 255, 0.1);
      border-radius: var(--radius-lg);
    }

    .sim-fog {
      background: linear-gradient(180deg, #252d3a 0%, #2a3545 40%, #303d50 100%);
      position: relative;
    }
    .sim-fog::before {
      content: '';
      position: absolute;
      inset: 0;
      background:
        radial-gradient(ellipse 120% 60% at 30% 50%, rgba(180, 200, 220, 0.12), transparent),
        radial-gradient(ellipse 100% 40% at 70% 60%, rgba(180, 200, 220, 0.08), transparent);
    }

    @keyframes snow-drift {
      from { transform: translateY(-5px) translateX(0); }
      to { transform: translateY(5px) translateX(3px); }
    }

    /* ===== Architecture Flow ===== */
    .flow-container {
      position: relative;
      padding: 3rem 0;
    }

    .flow-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 1rem;
      margin-bottom: 2rem;
      flex-wrap: wrap;
    }

    .flow-node {
      padding: 1rem 1.75rem;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      font-family: var(--font-mono);
      font-size: 0.85rem;
      color: var(--text-primary);
      text-align: center;
      transition: all 0.3s ease;
      position: relative;
    }

    .flow-node:hover {
      border-color: var(--accent-orange);
      transform: translateY(-2px);
    }

    .flow-node-label {
      font-family: var(--font-body);
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-top: 0.25rem;
    }

    .flow-node.source { border-color: var(--accent-blue); }
    .flow-node.process { border-color: var(--accent-orange); }
    .flow-node.filter { border-color: var(--accent-amber); }
    .flow-node.output { border-color: var(--accent-cyan); }

    .flow-arrow {
      color: var(--text-muted);
      font-size: 1.5rem;
      flex-shrink: 0;
    }

    .flow-arrow-down {
      text-align: center;
      color: var(--text-muted);
      font-size: 1.5rem;
      margin: 0.5rem 0;
    }

    .flow-branch {
      display: grid;
      grid-template-columns: repeat(6, minmax(0, 1fr));
      gap: 1rem;
      margin-top: 1rem;
    }

    .flow-branch-item {
      grid-column: span 2;
      padding: 1.25rem;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      text-align: center;
      transition: all 0.3s ease;
    }

    .flow-branch-item:nth-last-child(2):nth-child(4) {
      grid-column: 2 / span 2;
    }

    .flow-branch-item:last-child:nth-child(5) {
      grid-column: 4 / span 2;
    }

    .flow-branch-item:hover {
      border-color: var(--border-accent);
      transform: translateY(-2px);
    }

    .flow-branch-item h4 {
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 0.35rem;
    }

    .flow-branch-item p {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    .flow-branch-item .flow-count {
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 700;
      margin-top: 0.5rem;
    }

    /* ===== Citation Section ===== */
    .citation-block {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 2rem;
      position: relative;
      overflow: hidden;
    }

    .citation-block::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 3px;
      height: 100%;
      background: var(--accent-orange);
    }

    .citation-block pre {
      font-family: var(--font-mono);
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.8;
      overflow-x: auto;
      white-space: pre;
      margin: 0;
    }

    .citation-block pre .key {
      color: var(--accent-orange);
    }

    .citation-block pre .value {
      color: var(--text-primary);
    }

    .copy-btn {
      position: absolute;
      top: 1rem;
      right: 1rem;
      padding: 0.5rem 1rem;
      background: rgba(15, 23, 42, 0.04);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--text-secondary);
      cursor: pointer;
      transition: all 0.2s;
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    .copy-btn:hover {
      background: rgba(15, 23, 42, 0.06);
      color: var(--text-primary);
    }

    .copy-btn.copied {
      color: var(--accent-cyan);
      border-color: var(--accent-cyan);
    }

    /* ===== Mobile Menu ===== */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
      color: var(--text-primary);
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(20px);
      z-index: 200;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 2rem;
    }

    .mobile-menu.open { display: flex; }

    .mobile-menu a {
      font-family: var(--font-display);
      font-size: 1.75rem;
      font-weight: 600;
      color: var(--text-secondary);
      text-decoration: none;
      transition: color 0.2s;
    }

    .mobile-menu a:hover { color: var(--accent-orange); }

    .mobile-close {
      position: absolute;
      top: 1.5rem;
      right: 2rem;
      background: none;
      border: none;
      color: var(--text-primary);
      cursor: pointer;
      font-size: 1.5rem;
    }

    /* ===== Key Findings ===== */
    .findings-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1rem;
      align-items: start;
    }

    .finding-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 1.35rem 1.45rem;
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
      display: grid;
      grid-template-columns: 42px minmax(0, 1fr);
      column-gap: 1rem;
      align-items: start;
    }

    .finding-card:hover {
      border-color: var(--border-accent);
      transform: translateY(-2px);
    }

    .finding-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
    }

    .finding-card .finding-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 0;
      font-size: 1.25rem;
      grid-row: span 2;
    }

    .finding-card h3 {
      font-family: var(--font-display);
      font-size: 1.1rem;
      font-weight: 600;
      line-height: 1.25;
      margin-bottom: 0.35rem;
    }

    .finding-card p {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.55;
    }

    .finding-highlight {
      font-family: var(--font-mono);
      font-size: 0.85rem;
      padding: 0.75rem 1rem;
      background: rgba(15, 23, 42, 0.03);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      margin-top: 1rem;
      color: var(--text-secondary);
    }

    .finding-highlight strong {
      color: var(--accent-amber);
    }

    /* ===== Footer ===== */
    footer {
      padding: 3rem 0;
      border-top: 1px solid var(--border);
    }

    footer .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
    }

    footer .footer-ack {
      flex-basis: 100%;
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-top: 0.25rem;
      border-top: 1px dashed var(--border);
      padding-top: 0.9rem;
    }

    .footer-text {
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .footer-links {
      display: flex;
      gap: 1.5rem;
      list-style: none;
    }

    .footer-links a {
      display: inline-flex;
      align-items: center;
      gap: 0.45rem;
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--text-muted);
      text-decoration: none;
      transition: color 0.2s;
    }

    .footer-links a:hover { color: var(--text-secondary); }

    .footer-icon,
    .footer-links svg,
    .footer-links img {
      width: 1rem;
      height: 1rem;
      flex: 0 0 auto;
      fill: currentColor;
      object-fit: contain;
    }

    /* ===== Animations ===== */
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(24px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @keyframes pulse-dot {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.3; }
    }

    @keyframes rain-move {
      from { transform: translateY(-10px); }
      to { transform: translateY(0); }
    }

    /* Scroll-triggered animations */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .taxonomy-grid,
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }

      .flow-branch {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .flow-branch-item,
      .flow-branch-item:nth-last-child(2):nth-child(4),
      .flow-branch-item:last-child:nth-child(5) {
        grid-column: auto;
      }

      .taxonomy-summary {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-toggle { display: block; }
      .hero-stats { flex-direction: column; gap: 1.5rem; }
      .pipeline-grid,
      .taxonomy-grid,
      .metrics-grid,
      .download-grid,
      .findings-grid { grid-template-columns: 1fr; }
      .gallery-grid { grid-template-columns: repeat(2, 1fr); }
      .flow-branch { grid-template-columns: 1fr; }
      section { padding: 4rem 0; }

      .taxonomy-summary {
        grid-template-columns: 1fr;
      }

      .release-summary {
        grid-template-columns: 1fr;
      }

      .release-panel-header {
        padding: 1.35rem 1.25rem;
      }

      .release-table th,
      .release-table td {
        padding: 0.75rem;
      }

      .taxonomy-summary-item {
        align-items: flex-start;
      }

      .taxonomy-summary-label {
        text-align: left;
      }

      .taxonomy-card {
        min-height: 0;
      }

      .taxonomy-card h3 {
        min-height: 0;
      }
    }

    /* ===== Scrollbar ===== */
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: var(--bg-primary); }
    ::-webkit-scrollbar-thumb { background: var(--border-accent); border-radius: 3px; }
    ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }