/* roulang page: index */
:root {
      --primary: #0F2E3D;
      --accent: #D97706;
      --accent-hover: #B45309;
      --neutral-bg: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: #334155;
      background-color: #F8FAFC;
      line-height: 1.65;
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(11, 25, 36, 0.94) 0%, rgba(15, 46, 61, 0.88) 100%);
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 46, 61, 0.08), 0 2px 6px -1px rgba(15, 46, 61, 0.04);
    }
    .hover-lift {
      transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.25s ease;
    }
    .hover-lift:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px -4px rgba(15, 46, 61, 0.12), 0 4px 10px -2px rgba(15, 46, 61, 0.06);
    }
    details summary::-webkit-details-marker {
      display: none;
    }