/* roulang page: index */
:root {
      --bg-dark: #0B0E14;
      --bg-surface: #121722;
      --brand-green: #00F29D;
      --brand-purple: #6366F1;
      --text-main: #FFFFFF;
      --text-muted: #94A3B8;
      --border-line: #243048;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
      background-color: var(--bg-dark);
      color: var(--text-main);
    }
    body {
      line-height: 1.75;
      overflow-x: hidden;
    }
    .hero-bg {
      background-image: linear-gradient(180deg, rgba(11, 14, 20, 0.82) 0%, rgba(11, 14, 20, 0.98) 100%), url('/assets/images/7b5b46015adc3959.webp');
      background-size: cover;
      background-position: center;
    }
    .cyber-glow {
      box-shadow: 0 0 25px rgba(0, 242, 157, 0.15);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 242, 157, 0.4);
      box-shadow: 0 10px 30px -10px rgba(0, 242, 157, 0.2);
    }
    .custom-scrollbar::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #243048;
      border-radius: 3px;
    }