/* roulang page: index */
:root {
      --primary: #1E40AF;
      --secondary: #0284C7;
      --accent: #0D9488;
      --bg: #F8FAFC;
      --surface: #FFFFFF;
      --text: #0F172A;
      --text-muted: #64748B;
      --border: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg);
      color: var(--text);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    .custom-shadow {
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.08);
      transform: translateY(-4px);
    }