/* roulang page: index */
:root {
      --primary-cyan: #0284c7;
      --accent-glow: #00f2fe;
      --dark-slate: #0b0f17;
      --panel-border: rgba(226, 232, 240, 0.8);
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      color: #334155;
    }
    .metric-number {
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
    }
    .dark-glow-card {
      background: linear-gradient(145deg, #111827 0%, #0b0f17 100%);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-glow-border {
      border: 1px solid rgba(2, 132, 199, 0.2);
      box-shadow: 0 20px 45px -15px rgba(2, 132, 199, 0.15);
    }
    details > summary::-webkit-details-marker {
      display: none;
    }