/* roulang page: index */
:root {
      --bg-main: #0B1120;
      --bg-card: rgba(30, 41, 59, 0.7);
      --primary-cyan: #38BDF8;
      --primary-blue: #2563EB;
      --accent-glow: #06B6D4;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-glass: rgba(255, 255, 255, 0.12);
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: rgba(30, 41, 59, 0.6);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--border-glass);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.36);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: rgba(56, 189, 248, 0.45);
      transform: translateY(-3px);
      box-shadow: 0 16px 40px rgba(6, 182, 212, 0.15);
    }
    .btn-glow {
      background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.35);
      transition: all 0.25s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
      transform: translateY(-2px);
    }
    .text-glow {
      text-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
    }
    .hero-glow-badge {
      animation: pulse-glow 2.5s infinite;
    }
    @keyframes pulse-glow {
      0%, 100% { transform: scale(1); box-shadow: 0 0 15px rgba(244, 63, 94, 0.5); }
      50% { transform: scale(1.04); box-shadow: 0 0 25px rgba(244, 63, 94, 0.85); }
    }