:root {
      --bg-canvas: #000000;
      --bg-card: #070D18;
      --bg-card-hover: #0D1929;
      --bg-elevated: #0F1F35;
      --border-subtle: #142338;
      --border-focus: #FF6500;
      --text-primary: #FFFFFF;
      --text-secondary: #CBD5E1;
      --text-muted: #94A3B8;

      --primary: #FF6500;
      --primary-hover: #FF8533;
      --primary-glow: rgba(255, 101, 0, 0.25);

      --success: #10B981;
      --code-bg: #04070D;
      --header-bg: rgba(0, 0, 0, 0.88);
      --btn-bg: #1e293b;
      --btn-bg-hover: #27354a;
      --btn-border: #334155;
      --btn-text: #FFFFFF;

      --warning-bg: rgba(245, 158, 11, 0.10);
      --warning-border: rgba(245, 158, 11, 0.35);
      --warning-text: #FBBF24;
    }

    [data-theme="light"] {
      --bg-canvas: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-card-hover: #F1F5F9;
      --bg-elevated: #F1F5F9;
      --border-subtle: #E2E8F0;
      --border-focus: #E65100;
      --text-primary: #0F172A;
      --text-secondary: #334155;
      --text-muted: #64748B;

      --primary: #E65100;
      --primary-hover: #FF6D00;
      --primary-glow: rgba(230, 81, 0, 0.20);

      --success: #059669;
      --code-bg: #F1F5F9;
      --header-bg: rgba(255, 255, 255, 0.92);
      --btn-bg: #E2E8F0;
      --btn-bg-hover: #CBD5E1;
      --btn-border: #CBD5E1;
      --btn-text: #0F172A;

      --warning-bg: rgba(217, 119, 6, 0.08);
      --warning-border: rgba(217, 119, 6, 0.30);
      --warning-text: #B45309;
    }

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

    body {
      background: var(--bg-canvas);
      color: var(--text-primary);
      font-family: 'Rubik', sans-serif;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      line-height: 1.5;
      transition: background-color 0.2s ease, color 0.2s ease;
    }

    .theme-icon-moon { display: none; }
    [data-theme="light"] .theme-icon-sun { display: none; }
    [data-theme="light"] .theme-icon-moon { display: inline-block !important; }

    header.site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--header-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
      width: 100%;
    }

    .site-header-inner {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 16px;
      height: 52px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

    .site-logo-link {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: var(--text-primary);
      font-weight: 700;
      font-size: 0.95rem;
      letter-spacing: -0.01em;
    }
    .header-logo {
      width: 22px;
      height: 22px;
      border-radius: 4px;
      object-fit: contain;
    }
    .site-logo-link:hover .site-logo-title {
      color: var(--primary);
    }

    .site-logo-badge {
      font-family: 'JetBrains Mono', monospace;
      font-size: 0.7rem;
      padding: 2px 7px;
      border-radius: 4px;
      background: rgba(255, 101, 0, 0.12);
      border: 1px solid rgba(255, 101, 0, 0.3);
      color: var(--primary);
      font-weight: 600;
    }

    .site-header-nav,
    .site-header-right {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .nav-btn {
      color: var(--text-secondary);
      text-decoration: none;
      font-size: 0.8rem;
      font-weight: 500;
      padding: 5px 12px;
      border-radius: 6px;
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      transition: all 0.15s ease;
      font-family: inherit;
    }

    .nav-btn:hover {
      color: var(--text-primary);
      border-color: var(--border-focus);
      background: var(--bg-card-hover);
    }

    .nav-github {
      font-family: 'JetBrains Mono', monospace;
      font-size: 0.76rem;
    }
    .nav-github:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .sys-pill {
      font-family: 'JetBrains Mono', monospace;
      font-size: 0.74rem;
      padding: 5px 12px;
      border-radius: 6px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--text-secondary);
      letter-spacing: 0.04em;
    }
    .dot-live {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--success);
      box-shadow: 0 0 8px var(--success);
      animation: pulse-green 2s infinite;
      flex-shrink: 0;
    }
    @keyframes pulse-green {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.9); }
    }

    main {
      flex: 1;
      max-width: 1120px;
      margin: 36px auto 60px;
      padding: 0 24px;
      width: 100%;
    }

    .hero {
      text-align: center;
      margin-bottom: 36px;
    }

    .hero h1 {
      font-size: 2.6rem;
      font-weight: 800;
      letter-spacing: -0.03em;
      margin-bottom: 12px;
      color: var(--text-primary);
    }

    .hero p {
      font-size: 1.05rem;
      color: var(--text-secondary);
      max-width: 680px;
      margin: 0 auto;
      line-height: 1.6;
    }

    .legal-card {
      background: var(--warning-bg);
      border: 1px solid var(--warning-border);
      border-radius: 10px;
      padding: 14px 18px;
      margin-bottom: 36px;
      font-size: 0.88rem;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .legal-icon {
      color: var(--warning-text);
      flex-shrink: 0;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .section-title {
      font-size: 1.15rem;
      font-weight: 700;
      letter-spacing: -0.01em;
      margin: 32px 0 16px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-primary);
      font-family: 'JetBrains Mono', monospace;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 16px;
      margin-bottom: 8px;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: 10px;
      padding: 18px;
      display: flex;
      flex-direction: column;
      gap: 14px;
      transition: border-color 0.15s ease, background 0.15s ease;
    }

    .card:hover {
      border-color: var(--border-focus);
      background: var(--bg-card-hover);
    }

    .card-header-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
    }

    .card h3 {
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--text-primary);
    }

    .platform-tag {
      font-family: 'JetBrains Mono', monospace;
      font-size: 0.72rem;
      padding: 2px 7px;
      border-radius: 4px;
      background: var(--code-bg);
      border: 1px solid var(--border-subtle);
      color: var(--text-muted);
      white-space: nowrap;
    }

    .code-box {
      background: var(--code-bg);
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      padding: 10px 12px;
      font-family: 'JetBrains Mono', monospace;
      font-size: 0.80rem;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      word-break: break-all;
    }

    .code-box span {
      overflow-wrap: anywhere;
    }

    .copy-btn {
      background: var(--btn-bg);
      border: 1px solid var(--btn-border);
      color: var(--btn-text);
      border-radius: 6px;
      padding: 5px 10px;
      font-size: 0.72rem;
      font-weight: 600;
      cursor: pointer;
      flex-shrink: 0;
      transition: all 0.15s ease;
      font-family: inherit;
    }

    .copy-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .copy-btn.copied {
      background: rgba(16, 185, 129, 0.15);
      border-color: var(--success);
      color: var(--success);
    }

    /* Footer — With Expanded Documentation Links */
    footer.site-footer,
    footer {
      border-top: 1px solid var(--border-subtle);
      padding: 56px 24px 36px;
      background: var(--bg-canvas);
      margin-top: 50px;
    }

    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 36px;
    }

    .footer-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      flex-wrap: wrap;
      gap: 36px;
    }

    .footer-brand {
      max-width: 320px;
    }

    .footer-brand-title {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-primary);
      margin-bottom: 10px;
    }

    .footer-brand-desc {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .footer-links-group {
      display: flex;
      gap: 40px;
      flex-wrap: wrap;
    }

    .footer-col h5 {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--text-primary);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 14px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
      padding: 0;
      margin: 0;
    }

    .footer-col a {
      color: var(--text-muted);
      font-size: 0.84rem;
      transition: color 0.15s ease;
      text-decoration: none;
    }

    .footer-col a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid var(--border-subtle);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .footer-legal-notice {
      font-size: 0.78rem;
      color: var(--text-muted);
      max-width: 680px;
      line-height: 1.5;
    }

    @media (max-width: 768px) {
      .footer-top {
        flex-direction: column;
      }
      .footer-links-group {
        width: 100%;
        justify-content: space-between;
      }
    }