*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg: #0a0e17;
      --bg-card: rgba(22, 27, 34, 0.7);
      --bg-elevated: #1c2129;
      --border: rgba(48, 54, 61, 0.6);
      --text: #c9d1d9;
      --text-muted: #8b949e;
      --text-bright: #f0f6fc;
      --accent: #3d7ea6;
      --accent-light: #58a6d4;
      --accent-glow: rgba(61, 126, 166, 0.12);
      --gradient-1: #3d7ea6;
      --gradient-2: #6c5ce7;
      --gradient-3: #00cec9;
      --danger: #d4313b;
      --radius: 16px;
      --radius-sm: 10px;
    }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a { color: var(--accent-light); text-decoration: none; transition: color 0.2s; }
    a:hover { color: #7bc4f0; }

    .nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      padding: 16px 32px; display: flex; align-items: center; justify-content: space-between;
      background: rgba(10, 14, 23, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border);
    }
    .nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text-bright); text-decoration: none; }
    .nav-brand:hover { color: var(--text-bright); text-decoration: none; }
    .nav-links { display: flex; gap: 28px; align-items: center; }
    .nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--text-muted); transition: color 0.2s; }
    .nav-links a:hover, .nav-links a.active { color: var(--text-bright); text-decoration: none; }
    .nav-cta { padding: 8px 20px; background: var(--danger); color: #fff !important; border-radius: 8px; font-weight: 600; font-size: 0.85rem; transition: background 0.2s, transform 0.1s; }
    .nav-cta:hover { background: #e04450; transform: translateY(-1px); text-decoration: none; }
    .nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
    .nav-toggle svg { stroke: var(--text-muted); }

    /* ── Page Header ── */
    .page-header {
      padding: 100px 24px 20px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .page-header::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(61,126,166,0.15) 0%, transparent 60%);
      pointer-events: none;
    }

    .page-header h1 {
      font-size: clamp(2rem, 5vw, 3.2rem);
      font-weight: 900;
      color: var(--text-bright);
      letter-spacing: -0.03em;
      margin-bottom: 12px;
    }

    .page-header p {
      font-size: 1.1rem;
      color: var(--text-muted);
      max-width: 520px;
      margin: 0 auto;
    }

    /* ── Section ── */
    .section { max-width: 1200px; margin: 0 auto; padding: 20px 24px 40px; }

    /* ── Detailed Extension Cards ── */
    .ext-detail {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      backdrop-filter: blur(10px);
      margin-bottom: 24px;
      transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    }

    .ext-detail:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }

    .ext-detail-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0;
      min-height: calc(100vh - 200px);
    }

    .ext-detail-left { padding: 28px 28px 20px; display: flex; flex-direction: column; }

    .ext-detail-right {
      padding: 28px;
      display: flex;
      flex-direction: column;
      gap: 16px;
      border-left: 1px solid var(--border);
    }

    .ext-detail-header {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 12px;
    }

    .ext-detail-logo {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    }

    .ext-detail-title h2 {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-bright);
    }

    .ext-detail-title .tag {
      display: inline-block;
      margin-top: 2px;
      font-size: 0.68rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      padding: 2px 10px;
      border-radius: 100px;
      background: var(--accent-glow);
      color: var(--accent-light);
      border: 1px solid rgba(61,126,166,0.2);
    }

    .coming-soon-badge {
      display: inline-block;
      font-size: 0.68rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      padding: 2px 10px;
      border-radius: 100px;
      background: rgba(212,49,59,0.15);
      color: #e04450;
      border: 1px solid rgba(212,49,59,0.25);
      margin-left: 6px;
    }

    .ext-detail-body { flex: 1; }

    .ext-detail-body > p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      max-width: 600px;
    }

    .ext-detail-banner {
      width: 100%;
      height: auto;
      aspect-ratio: 1400 / 560;
      object-fit: contain;
      border-radius: 10px;
      border: 1px solid var(--border);
    }

    .ext-features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 8px;
      flex: 1;
    }

    .ext-feat {
      padding: 12px;
      background: var(--bg-elevated);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
    }

    .ext-feat h4 {
      font-size: 0.82rem;
      color: var(--text-bright);
      margin-bottom: 2px;
    }

    .ext-feat p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .ext-screenshots {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 12px;
    }

    .ext-screenshots img {
      width: 100%;
      height: auto;
      aspect-ratio: 1280 / 800;
      object-fit: contain;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
    }

    .ext-detail-actions {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      padding-top: 12px;
    }

    .btn {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 10px 20px; font-size: 13px; font-weight: 600;
      font-family: inherit; border: none; border-radius: var(--radius-sm);
      cursor: pointer; transition: all 0.25s ease; text-decoration: none;
    }
    .btn:hover { text-decoration: none; transform: translateY(-2px); }
    .btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 20px rgba(61,126,166,0.3); }
    .btn-primary:hover { box-shadow: 0 8px 32px rgba(61,126,166,0.4); color: #fff; }
    .btn-outline { background: transparent; color: var(--text-bright); border: 1px solid var(--border); }
    .btn-outline:hover { border-color: var(--accent); background: var(--accent-glow); color: var(--text-bright); }
    .btn-danger { background: var(--danger); color: #fff; }
    .btn-danger:hover { background: #e04450; color: #fff; }

    /* ── Animations ── */
    .reveal { opacity: 0; transform: translateY(40px) scale(0.98); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
    .reveal.visible { opacity: 1; transform: translateY(0) scale(1); }
    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
    .reveal:nth-child(4) { transition-delay: 0.3s; }
    .reveal:nth-child(5) { transition-delay: 0.4s; }

    /* ── Footer ── */
    .site-footer {
      text-align: center;
      padding: 40px 24px;
      border-top: 1px solid var(--border);
      color: var(--text-muted);
      font-size: 0.85rem;
    }
    .site-footer .links { display: flex; justify-content: center; gap: 24px; margin-bottom: 16px; flex-wrap: wrap; }
    .site-footer .links a { color: var(--text-muted); }
    .site-footer .links a:hover { color: var(--text-bright); }

    @media (max-width: 900px) {
      .ext-detail-inner { grid-template-columns: 1fr; }
      .ext-detail-right { border-left: none; border-top: 1px solid var(--border); }
    }

    @media (max-width: 640px) {
      .nav-links { display: none; }
      .nav-toggle { display: block; }
      .page-header { padding: 100px 16px 20px; }
      .section { padding: 16px 16px 40px; }
      .ext-detail-left { padding: 20px; }
      .ext-detail-right { padding: 20px; }
      .ext-features-grid { grid-template-columns: 1fr; }
      .ext-screenshots { grid-template-columns: 1fr; }
    }