/* roulang page: index */
:root {
      --brand-primary: #1E40AF;
      --brand-accent: #0284C7;
      --brand-success: #10B981;
      --text-main: #0F172A;
      --text-muted: #475569;
      --bg-base: #FFFFFF;
      --bg-alt: #F8FAFC;
    }
    html {
      box-sizing: border-box;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-base);
    }
    *, *::before, *::after {
      box-sizing: inherit;
    }
    .hero-angled-clip {
      clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
    }
    @media (max-width: 768px) {
      .hero-angled-clip {
        clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
      }
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, opacity 0.25s ease-out;
    }
    .accordion-item.active .accordion-content {
      max-height: 380px;
    }
    .accordion-item.active .accordion-icon {
      transform: rotate(180deg);
    }
    .card-hover-fx {
      transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-fx:hover {
      transform: translateY(-4px);
    }