/* roulang page: index */
:root {
      --primary: #0EA5E9;
      --secondary: #2563EB;
      --dark: #0F172A;
      --darker: #020617;
      --light-bg: #F8FAFC;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--light-bg);
      color: #334155;
      overflow-x: hidden;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background-color: #cbd5e1;
      border-radius: 9999px;
    }