/* roulang page: index */
:root {
      --primary-color: #FF6B00;
      --secondary-color: #1E40AF;
      --accent-green: #10B981;
      --dark-slate: #0F172A;
      --body-bg: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #64748B;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--body-bg);
      color: var(--text-main);
      overflow-x: hidden;
      line-height: 1.68;
    }
    .badge-accent {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.875rem;
      border-radius: 9999px;
      font-size: 0.875rem;
      font-weight: 600;
      letter-spacing: 0.025em;
    }
    .custom-card-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .custom-card-shadow:hover {
      box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      transform: translateY(-4px);
    }
    .clip-hero-diagonal {
      clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
    }
    @media (max-width: 768px) {
      .clip-hero-diagonal {
        clip-path: none;
      }
    }
    .faq-panel {
      transition: max-height 0.35s ease-out, opacity 0.25s ease;
      max-height: 0;
      opacity: 0;
      overflow: hidden;
    }
    .faq-panel.active {
      max-height: 500px;
      opacity: 1;
    }
    .faq-chevron {
      transition: transform 0.3s ease;
    }
    .faq-chevron.rotate {
      transform: rotate(180deg);
    }