/* roulang page: index */
:root {
      --brand-dark: #0B0F19;
      --brand-navy: #0F172A;
      --brand-blue: #2563EB;
      --brand-emerald: #10B981;
      --brand-amber: #F59E0B;
      --bg-slate: #F8FAFC;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--bg-slate);
      color: #334155;
      overflow-x: hidden;
    }
    .font-num {
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
    }
    .glass-card {
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }
    .hero-gradient {
      background: radial-gradient(120% 120% at 50% 10%, rgba(37, 99, 235, 0.08) 0%, rgba(248, 250, 252, 1) 100%);
    }
    .section-dark {
      background-color: #0B0F19;
      color: #F1F5F9;
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 4px;
    }