/* roulang page: index */
:root {
      --primary: #1d4ed8;
      --primary-hover: #1e40af;
      --accent: #ea580c;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: #334155;
      background-color: #ffffff;
      -webkit-font-smoothing: antialiased;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(37, 99, 235, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
    }
    details > summary::-webkit-details-marker {
      display: none;
    }