/* roulang page: index */
:root {
      --primary-navy: #1E3A8A;
      --primary-cyan: #0EA5E9;
      --accent-amber: #F59E0B;
      --dark-space: #0B1120;
      --text-title: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --card-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.06);
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-body);
      background-color: #F8FAFC;
      overflow-x: hidden;
    }
    .hero-bg-gradient {
      background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(30, 58, 138, 0.08) 100%);
    }
    .custom-card {
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 35px -8px rgba(15, 23, 42, 0.12);
    }
    .dark-glow {
      box-shadow: 0 0 50px -10px rgba(14, 165, 233, 0.25);
    }