/* roulang page: index */
:root {
      --bg-dark: #0A0B10;
      --card-bg: #131522;
      --neon-green: #00FF88;
      --electric-purple: #6C5CE7;
      --text-main: #FFFFFF;
      --text-body: #C4C8D8;
      --text-muted: #7A8199;
      --border-light: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-body);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .neon-glow {
      box-shadow: 0 0 25px rgba(0, 255, 136, 0.25);
    }
    .purple-glow {
      box-shadow: 0 0 25px rgba(108, 92, 231, 0.25);
    }
    .grid-bg-pattern {
      background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
      background-size: 32px 32px;
    }