/* roulang page: index */
:root {
      --primary-dark: #0F172A;
      --accent-teal: #0D9488;
      --accent-amber: #D97706;
      --bg-light: #F8FAFC;
      --border-color: #E2E8F0;
      --card-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 10px 15px -5px rgba(0,0,0,0.02);
    }
    * { box-sizing: border-box; }
    body {
      background-color: var(--bg-light);
      color: #334155;
      font-family: system-ui, -apple-system, "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    .custom-container {
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .hero-bg {
      background-image: linear-gradient(rgba(15, 23, 42, 0.94), rgba(10, 15, 29, 0.96)), url('/assets/images/060619bd3e9ea3fd.jpg');
      background-size: cover;
      background-position: center;
    }
    .section-dark {
      background-image: linear-gradient(rgba(10, 15, 29, 0.96), rgba(15, 23, 42, 0.98)), url('/assets/images/b831c49d5f63d3bd.webp');
      background-size: cover;
      background-position: center;
    }
    .data-table-ticker {
      animation: tickerPulse 4s ease-in-out infinite alternate;
    }
    @keyframes tickerPulse {
      0% { border-color: rgba(13, 148, 136, 0.2); }
      100% { border-color: rgba(13, 148, 136, 0.8); }
    }
    .tab-content { display: none; }
    .tab-content.active { display: block; }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }