/* roulang page: index */
:root {
      --primary: #0F172A;
      --accent: #0284C7;
      --emerald: #10B981;
      --bg-light: #F8FAFC;
      --bg-dark: #0B0F17;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-light);
      color: #334155;
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      -webkit-font-smoothing: antialiased;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 50%, rgba(2, 132, 199, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
      width: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 9999px;
    }
    .glass-nav {
      backdrop-filter: blur(12px);
      background-color: rgba(15, 23, 42, 0.92);
    }
    .glass-card {
      background: rgba(30, 41, 59, 0.7);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }