/* roulang page: index */
:root {
      --primary: #1E293B;
      --accent-cyan: #0EA5E9;
      --accent-gold: #D97706;
      --surface-light: #F8FAFC;
      --surface-dark: #0B0F17;
      --text-main: #0F172A;
      --text-sub: #334155;
    }
    body {
      color: var(--text-main);
      background-color: var(--surface-light);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    .countdown-ring {
      background: conic-gradient(#0EA5E9 calc(var(--progress, 72) * 1%), #334155 0);
    }
    .micro-border {
      border: 1px solid rgba(226, 232, 240, 0.9);
    }
    .dark-card-border {
      border: 1px solid rgba(51, 65, 85, 0.7);
    }