/* roulang page: index */
:root {
      --brand-primary: #0F2C59;
      --brand-secondary: #0A192F;
      --brand-accent: #FF5722;
      --brand-teal: #00C896;
      --brand-light: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #64748B;
    }
    body {
      color: var(--text-main);
      background-color: var(--brand-light);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .hero-bg {
      background-image: linear-gradient(to right, rgba(15, 44, 89, 0.92), rgba(10, 25, 47, 0.85)), url('/assets/images/00a2a6e223c3ed1e.jpg');
      background-size: cover;
      background-position: center;
    }
    .cta-banner-bg {
      background-image: linear-gradient(rgba(10, 25, 47, 0.94), rgba(15, 44, 89, 0.94)), url('/assets/images/f031b3c5e2c35559.jpg');
      background-size: cover;
      background-position: center;
    }
    .custom-card-shadow {
      box-shadow: 0 10px 30px -5px rgba(15, 44, 89, 0.08);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card-shadow:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 35px -5px rgba(15, 44, 89, 0.14);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-active .faq-content {
      max-height: 250px;
    }
    .faq-active .faq-icon {
      transform: rotate(180deg);
    }