/* roulang page: index */
:root {
      --bg-dark: #0A0D14;
      --bg-card: #121722;
      --neon-green: #00FF87;
      --neon-cyan: #60EFFF;
      --neon-purple: #7B2CBF;
      --text-main: #FFFFFF;
      --text-sub: #94A3B8;
      --border-light: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      overflow-x: hidden;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .glow-border {
      border: 1px solid var(--border-light);
      transition: all 0.3s ease;
    }
    .glow-border:hover {
      border-color: rgba(0, 255, 135, 0.4);
      box-shadow: 0 0 25px rgba(0, 255, 135, 0.15);
    }
    .glow-text-cyan {
      text-shadow: 0 0 15px rgba(96, 239, 255, 0.5);
    }
    .glow-text-green {
      text-shadow: 0 0 15px rgba(0, 255, 135, 0.5);
    }
    .hero-mask {
      background: radial-gradient(circle at center, rgba(10, 13, 20, 0.6) 0%, rgba(10, 13, 20, 0.95) 85%);
    }