/* roulang page: index */
:root {
      --bg-dark: #0D1117;
      --bg-panel: #161B22;
      --bg-card: #21262D;
      --accent-cyan: #00F2FE;
      --accent-green: #10B981;
      --text-main: #F0F6FC;
      --text-muted: #8B949E;
      --border-line: rgba(240, 246, 252, 0.12);
    }
    * {
      box-sizing: border-box;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .neon-border {
      border: 1px solid var(--border-line);
      transition: all 0.25s ease-in-out;
    }
    .neon-border:hover {
      border-color: rgba(0, 242, 254, 0.5);
      box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
      transform: translateY(-2px);
    }
    .text-glow {
      text-shadow: 0 0 12px rgba(0, 242, 254, 0.4);
    }
    .bg-grid-pattern {
      background-image: radial-gradient(rgba(240, 246, 252, 0.08) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    .status-pulse {
      animation: pulseGlow 2s infinite;
    }
    @keyframes pulseGlow {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.1); }
    }