/* roulang page: index */
:root {
      --primary: #4F46E5;
      --primary-dark: #4338CA;
      --secondary: #F97316;
      --text-main: #1E293B;
      --text-muted: #475569;
      --bg-light: #F8FAFC;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    .custom-scroll {
      scroll-behavior: smooth;
    }
    .glass-nav {
      backdrop-filter: blur(12px);
      background-color: rgba(255, 255, 255, 0.92);
    }
    .badge-tag {
      display: inline-flex;
      align-items: center;
      padding: 0.25rem 0.75rem;
      font-size: 0.8125rem;
      font-weight: 600;
      border-radius: 9999px;
    }
    details summary::-webkit-details-marker {
      display: none;
    }