/* roulang page: index */
:root {
      --primary-grad: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
      --accent-cyan: #06B6D4;
      --bg-slate: #0F172A;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      -webkit-font-smoothing: antialiased;
    }
    .custom-gradient-bg {
      background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%);
    }
    .hero-glass-badge {
      background: rgba(255, 255, 255, 0.12);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .card-transition {
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-transition:hover {
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }