/* roulang page: index */
:root {
      --color-primary: #0E58FF;
      --color-primary-dark: #1E40AF;
      --color-accent-teal: #06B6D4;
      --color-accent-orange: #F97316;
      --bg-slate: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      -webkit-font-smoothing: antialiased;
    }

    .hero-mask {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 64, 175, 0.82) 100%);
    }

    .custom-scroll-bar::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scroll-bar::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 9999px;
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .faq-item.active .faq-content {
      max-height: 240px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }