/* roulang page: index */
:root {
      --primary-navy: #0F172A;
      --deep-dark: #0B1329;
      --accent-green: #059669;
      --emerald-light: #10B981;
      --accent-blue: #0284C7;
      --bg-light: #F8FAFC;
      --border-color: #E2E8F0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: #1E293B;
      background-color: var(--bg-light);
      line-height: 1.65;
    }
    .custom-card {
      border: 1px solid var(--border-color);
      border-radius: 12px;
      box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      transition: all 0.25s ease-in-out;
    }
    .custom-card:hover {
      transform: translateY(-4px);
      border-color: var(--emerald-light);
      box-shadow: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
    }
    .hero-bg {
      background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(11, 19, 41, 0.9) 100%), url('/assets/images/06823044d32ec037.png');
      background-size: cover;
      background-position: center;
    }
    .tech-bg {
      background-image: linear-gradient(180deg, rgba(11, 19, 41, 0.97) 0%, rgba(15, 23, 42, 0.98) 100%), url('/assets/images/7aaa0630cc30c314.webp');
      background-size: cover;
      background-position: center;
    }