/* roulang page: index */
:root {
      --primary-dark: #0F172A;
      --accent-blue: #2563EB;
      --accent-emerald: #059669;
      --bg-light: #F8FAFC;
      --border-soft: #E2E8F0;
    }
    body {
      color: #334155;
      background-color: #FFFFFF;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .custom-shadow {
      box-shadow: 0 4px 24px -2px rgba(15, 23, 42, 0.06);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
      transform: translateY(-3px);
    }
    .code-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .code-scroll::-webkit-scrollbar-thumb {
      background: #334155;
      border-radius: 3px;
    }