/* roulang page: index */
:root {
      --bg-base: #F8FAFC;
      --bg-alt: #F1F5F9;
      --color-primary: #0284C7;
      --color-primary-dark: #0F172A;
      --color-accent: #0D9488;
      --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
      --card-shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    }
    body {
      background-color: var(--bg-base);
      color: #334155;
      font-feature-settings: "cv02", "cv03", "cv04", "cv11";
      overflow-x: hidden;
    }
    .custom-card-shadow {
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .custom-card-shadow:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(2, 132, 199, 0.15) 0%, rgba(10, 17, 32, 0.98) 75%);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-active .faq-content {
      max-height: 280px;
    }
    .faq-active .faq-icon {
      transform: rotate(180deg);
    }
    /* 解决锚点被顶部悬浮条遮挡问题 */
    section {
      scroll-margin-top: 5.5rem;
    }