/* roulang page: index */
:root {
      --primary: #0891b2;
      --primary-hover: #0e7490;
      --accent: #22d3ee;
      --bg-slate: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: rgba(226, 232, 240, 0.8);
    }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      line-height: 1.68;
      color: var(--text-main);
      background-color: var(--bg-slate);
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background-color: #cbd5e1;
      border-radius: 9999px;
    }
    .tech-grid-pattern {
      background-size: 40px 40px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    }
    details > summary::-webkit-details-marker {
      display: none;
    }