/* roulang page: index */
:root {
      --bg-dark: #0B0C10;
      --bg-deep: #14161D;
      --card-bg: #1F222E;
      --primary: #6C3CE9;
      --secondary: #FF3366;
      --accent: #00F5D4;
      --text-main: #FFFFFF;
      --text-muted: #A0A5B5;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      overflow-x: hidden;
      line-height: 1.6;
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
      width: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #2a2e3d;
      border-radius: 4px;
    }
    .card-border-glow {
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-border-glow:hover {
      border-color: rgba(255, 51, 102, 0.5);
      box-shadow: 0 10px 30px -10px rgba(108, 60, 233, 0.4);
      transform: translateY(-4px);
    }
    .btn-gradient {
      background: linear-gradient(135deg, #FF3366 0%, #6C3CE9 100%);
      box-shadow: 0 4px 20px rgba(255, 51, 102, 0.35);
      transition: all 0.25s ease;
    }
    .btn-gradient:hover {
      filter: brightness(1.12);
      box-shadow: 0 6px 26px rgba(255, 51, 102, 0.55);
      transform: translateY(-1px);
    }
    .btn-glass {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.16);
      backdrop-filter: blur(8px);
      transition: all 0.25s ease;
    }
    .btn-glass:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.35);
    }
    .neon-text-glow {
      text-shadow: 0 0 12px rgba(0, 245, 212, 0.45);
    }
    .pulse-dot {
      animation: pulseAnim 2s infinite;
    }
    @keyframes pulseAnim {
      0% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(0, 245, 212, 0.7); }
      70% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 0 8px rgba(0, 245, 212, 0); }
      100% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(0, 245, 212, 0); }
    }