/* roulang page: index */
:root {
      --primary: #1E40AF;
      --accent: #0284C7;
      --accent-light: #0EA5E9;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .hero-bg {
      background-image: radial-gradient(circle at top right, rgba(14, 165, 233, 0.12), transparent 45%),
                        radial-gradient(circle at bottom left, rgba(30, 64, 175, 0.08), transparent 50%);
    }
    .glass-nav {
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }
    .custom-shadow {
      box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.06), 0 4px 6px -2px rgba(15, 23, 42, 0.02);
    }