/* roulang page: index */
:root {
      --brand-primary: #00E5FF;
      --brand-emerald: #10B981;
      --brand-navy: #0A192F;
      --text-main: #0F172A;
      --text-sub: #475569;
      --text-muted: #94A3B8;
      --bg-base: #F8FAFC;
    }
    * {
      box-sizing: border-box;
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      overflow-x: hidden;
    }
    .brand-gradient {
      background: linear-gradient(135deg, #00E5FF 0%, #10B981 100%);
    }
    .brand-gradient-text {
      background: linear-gradient(135deg, #00E5FF 0%, #10B981 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-glow-overlay {
      background: linear-gradient(180deg, rgba(10, 25, 47, 0.88) 0%, rgba(11, 19, 43, 0.95) 100%);
    }
    .card-hover-trans {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-trans:hover {
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .pulse-dot {
      animation: pulseAnimation 2s infinite;
    }
    @keyframes pulseAnimation {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }