/* roulang page: index */
:root {
      --primary-color: #6366F1;
      --secondary-color: #06B6D4;
      --accent-color: #F59E0B;
      --bg-base: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #64748B;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: #334155;
      background-color: var(--bg-base);
      line-height: 1.75;
      overflow-x: hidden;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.05) 50%, transparent 80%);
    }
    .glass-nav {
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      background-color: rgba(255, 255, 255, 0.92);
    }
    .badge-gradient {
      background: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
    }
    .btn-gradient {
      background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-gradient:hover {
      box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.4);
      transform: translateY(-2px);
    }