/* roulang page: index */
:root {
      --primary: #1d4ed8;
      --secondary: #0f172a;
      --accent: #06b6d4;
      --bg-light: #f8fafc;
      --card-border: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: #1e293b;
      background-color: #ffffff;
      line-height: 1.6;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
    }
    .custom-shadow:hover {
      box-shadow: 0 20px 25px -5px rgba(29, 78, 216, 0.08), 0 8px 10px -6px rgba(29, 78, 216, 0.04);
    }