/* roulang page: index */
:root {
      --primary-color: #1e40af;
      --secondary-color: #3b82f6;
      --accent-cyan: #0ea5e9;
      --accent-green: #10b981;
      --bg-slate: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-light: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
      width: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background-color: #cbd5e1;
      border-radius: 9999px;
    }
    details summary::-webkit-details-marker {
      display: none;
    }