/* roulang page: index */
:root {
      --primary: #4f46e5;
      --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      --surface-light: #f8fafc;
      --surface-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #334155;
      --text-muted: #64748b;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-sub);
      background-color: var(--surface-light);
      overflow-x: hidden;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.25) 0%, rgba(15, 23, 42, 0) 70%);
    }
    .bento-card {
      border-radius: 20px;
      border: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.06);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .bento-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 30px -10px rgba(79, 70, 229, 0.16);
      border-color: rgba(99, 102, 241, 0.4);
    }
    .dark-card {
      border-radius: 20px;
      border: 1px solid rgba(255, 255, 255, 0.08);
      background: rgba(30, 27, 75, 0.5);
      backdrop-filter: blur(12px);
      transition: all 0.3s ease;
    }
    .dark-card:hover {
      border-color: rgba(6, 182, 212, 0.4);
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }