/* roulang page: index */
:root {
      --bg-dark: #0A0E17;
      --card-bg: #121826;
      --cyan-neon: #00F0FF;
      --purple-neon: #7000FF;
      --pink-neon: #FF0055;
      --border-color: #1E293B;
    }
    body {
      background-color: var(--bg-dark);
      color: #E2E8F0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .cyber-gradient-bg {
      background: radial-gradient(circle at 50% 20%, rgba(112, 0, 255, 0.15) 0%, rgba(10, 14, 23, 0.95) 75%);
    }
    .glow-border {
      border: 1px solid var(--border-color);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glow-border:hover {
      border-color: rgba(0, 240, 255, 0.5);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
    }
    .no-scrollbar::-webkit-scrollbar {
      display: none;
    }
    .no-scrollbar {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }
    details summary::-webkit-details-marker {
      display: none;
    }