/* roulang page: index */
:root {
      --primary: #0284c7;
      --primary-hover: #0369a1;
      --dark-slate: #0b0f19;
      --card-border: #e2e8f0;
      --text-main: #0f172a;
      --text-muted: #64748b;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
    }
    .custom-scroll-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
    }
    .code-accent {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    }