/* roulang page: index */
:root {
      --primary: #1E293B;
      --navy-deep: #0F172A;
      --accent-teal: #0D9488;
      --accent-orange: #EA580C;
      --bg-slate: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      background-color: #FFFFFF;
      color: #1E293B;
      line-height: 1.75;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    .grid-pattern {
      background-size: 28px 28px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.4) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.4) 1px, transparent 1px);
    }
    .dark-grid-pattern {
      background-size: 32px 32px;
      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);
    }
    .glow-tag {
      box-shadow: 0 0 15px rgba(234, 88, 12, 0.4);
    }