/* roulang page: index */
:root {
      --bg-dark: #070B14;
      --bg-card: rgba(13, 21, 39, 0.72);
      --neon-blue: #0066FF;
      --neon-cyan: #00F5D4;
      --neon-pink: #EC4899;
      --text-main: #F1F5F9;
      --text-muted: #94A3B8;
      --border-glass: rgba(255, 255, 255, 0.1);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      line-height: 1.75;
    }
    .glass-panel {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-glass);
    }
    .neon-glow-btn {
      background: linear-gradient(135deg, #0066FF 0%, #00F5D4 100%);
      box-shadow: 0 0 25px rgba(0, 245, 212, 0.35);
      transition: all 0.3s ease;
    }
    .neon-glow-btn:hover {
      box-shadow: 0 0 35px rgba(0, 245, 212, 0.6);
      transform: translateY(-2px);
    }
    .section-border {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(0, 0, 0, 0.4);
    }