/* roulang page: index */
:root {
      --primary: #1E3A8A;
      --secondary: #0D9488;
      --accent: #F59E0B;
      --bg-surface: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #334155;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
    body { background-color: var(--bg-surface); color: var(--text-muted); line-height: 1.75; }
    .hero-video-mask {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(10, 25, 47, 0.92) 0%, rgba(30, 58, 138, 0.82) 100%);
    }
    .badge-amber {
      background-color: #FEF3C7;
      color: #92400E;
    }
    .badge-teal {
      background-color: #CCFBF1;
      color: #0F766E;
    }
    .glass-card {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(8px);
    }
    .hover-lift {
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 28px -6px rgba(15, 23, 42, 0.12);
    }
    details summary::-webkit-details-marker { display: none; }