/* roulang page: index */
:root {
      --brand-navy: #0A2540;
      --brand-mint: #00D4B2;
      --brand-dark: #061727;
      --brand-slate: #334155;
      --brand-gray: #64748B;
      --brand-bglight: #F8FAFC;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: #0F172A;
      background-color: #FFFFFF;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
      line-height: 1.75;
    }
    .custom-container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .glass-card {
      background: rgba(255, 255, 255, 0.95);
      border: 1px solid rgba(15, 23, 42, 0.08);
      box-shadow: 0 4px 20px -2px rgba(10, 37, 64, 0.05);
      transition: all 0.25s ease;
    }
    .glass-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px -4px rgba(10, 37, 64, 0.12);
      border-color: rgba(0, 212, 178, 0.35);
    }
    .dark-card {
      background: rgba(15, 37, 64, 0.65);
      border: 1px solid rgba(0, 212, 178, 0.15);
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .dark-card:hover {
      border-color: var(--brand-mint);
      transform: translateY(-2px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .badge-tag {
      font-size: 0.75rem;
      padding: 0.2rem 0.6rem;
      border-radius: 9999px;
      font-weight: 500;
      letter-spacing: 0.025em;
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #cbd5e1;
      border-radius: 3px;
    }