/* roulang page: index */
:root {
      --bg-dark: #070B14;
      --bg-surface: #0D1527;
      --accent-neon: #0066FF;
      --accent-cyan: #00F5D4;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --glass-border: rgba(255, 255, 255, 0.1);
      --glass-bg: rgba(255, 255, 255, 0.04);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--glass-border);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: var(--accent-cyan);
      transform: translateY(-4px);
      box-shadow: 0 10px 30px -10px rgba(0, 245, 212, 0.2);
    }
    .btn-glow {
      background: linear-gradient(135deg, #0066FF, #00D2FF);
      color: #FFFFFF;
      box-shadow: 0 0 20px rgba(0, 102, 255, 0.5);
      transition: all 0.3s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(0, 245, 212, 0.8);
      transform: translateY(-2px);
    }
    .badge-soft {
      background: rgba(0, 245, 212, 0.1);
      border: 1px solid rgba(0, 245, 212, 0.3);
      color: #00F5D4;
    }
    .gradient-text {
      background: linear-gradient(135deg, #FFFFFF 30%, #00F5D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }