/* Font families */
      body { font-family: 'Microsoft YaHei', 'Source Han Sans', 'Noto Sans SC', sans-serif; }
      .num-display { font-size: clamp(36px, 5vw, 48px); line-height: 1.05; }
      .param-tag {
        display: inline-flex; align-items: center;
        padding: 2px 8px; font-size: 12px; line-height: 1.5;
        border-radius: 4px;
        background: #F7F8FA;
        color: #333333;
        border: 1px solid #E5E5E5;
        white-space: nowrap;
        font-family: 'Inter', 'Segoe UI', 'Arial', sans-serif;
      }
      /* Hero gradient */
      .hero-bg {
        background: linear-gradient(135deg, #06152E 0%, #002FA7 100%);
      }
      /* Nav links */
      .nav-link {
        position: relative;
        display: inline-flex;
        align-items: center;
        height: 64px;
        color: #333333;
        font-weight: 500;
        transition: color 200ms ease;
      }
      .nav-link:hover { color: #002FA7; }
      .nav-active { color: #002FA7; font-weight: 600; }
      .nav-active::after {
        content: '';
        position: absolute;
        left: 0; right: 0; bottom: 0;
        height: 2px;
        background: #002FA7;
      }
      /* Primary button */
      .btn-primary { transition: transform 200ms ease, background-color 200ms ease; }
      .btn-primary:hover { transform: translateY(-1px); background-color: #3363D6; }
      .btn-primary:active { transform: translateY(0); }
      .btn-secondary { transition: transform 200ms ease, background-color 200ms ease; }
      .btn-secondary:hover { transform: translateY(-1px); background-color: rgba(0,229,255,0.08); }
      .btn-secondary:active { transform: translateY(0); }
      .cta-bottom-btn { transition: transform 200ms ease, box-shadow 200ms ease; }
      .cta-bottom-btn:hover { transform: translateY(-2px); }
      .cta-bottom-btn:active { transform: translateY(0); }
      /* Cards */
      .product-card, .solution-card {
        transition: transform 200ms ease, border-color 200ms ease;
      }
      .product-card:hover, .solution-card:hover {
        transform: translateY(-2px);
        border-color: #00E5FF;
      }
      .product-card:hover .text-\[var\(--color-platform-blue\)\] svg,
      .solution-card a svg { transition: transform 200ms ease; }
      .product-card:hover a svg { transform: translateX(3px); }
      .solution-card:hover a svg { transform: translateX(3px); }
      .featured-product-card {
        transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
      }
      .featured-product-card:hover {
        transform: translateY(-4px);
        border-color: #00E5FF;
        box-shadow: 0 8px 16px rgba(0,0,0,0.10);
      }
      /* Footer */
      .footer-title { font-size: 15px; font-weight: 600; color: rgba(255,255,255,0.95); }
      .footer-link { font-size: 14px; color: rgba(255,255,255,0.6); transition: color 200ms ease; }
      .footer-link:hover { color: #00E5FF; }
      .footer-text { font-size: 14px; color: rgba(255,255,255,0.6); }
      /* Data node pulse (IoT live data) */
      @keyframes node-pulse {
        0%, 100% { opacity: 0.55; transform: scale(1); transform-origin: center; }
        50% { opacity: 1; transform: scale(1.25); }
      }
      .data-node {
        animation: node-pulse 3s ease-in-out infinite;
        transform-box: fill-box;
        transform-origin: center;
      }
      /* Focus visible */
      a:focus-visible, button:focus-visible {
        outline: 2px solid #00E5FF;
        outline-offset: 2px;
        border-radius: 2px;
      }
      /* Nav dropdown mega-menu */
      .dropdown-menu {
        opacity: 0;
        visibility: hidden;
        transform: translate(0, -8px);
        transition: opacity 200ms ease, visibility 200ms ease, transform 200ms ease;
        z-index: 60;
        box-shadow: 0 8px 16px rgba(0,0,0,0.10);
      }
      .nav-dropdown:hover .dropdown-menu,
      .nav-dropdown.dropdown-open .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translate(0, 0);
      }

      /* Carousel */
      .carousel-container { min-height: 520px; }
      @media (min-width: 1024px) { .carousel-container { min-height: 640px; } }
      .carousel-slide { position: absolute; inset: 0; }
      .carousel-arrow {
        width: 40px; height: 40px;
        display: flex; align-items: center; justify-content: center;
        background: rgba(255,255,255,0.15);
        border: 1px solid rgba(255,255,255,0.25);
        border-radius: 9999px;
        color: #FFFFFF;
        cursor: pointer;
        transition: background-color 200ms ease;
        -webkit-backdrop-filter: blur(4px);
        backdrop-filter: blur(4px);
      }
      .carousel-arrow:hover { background: rgba(255,255,255,0.30); }
      .carousel-arrow:active { background: rgba(255,255,255,0.20); }
      .carousel-dot {
        width: 8px; height: 8px;
        border-radius: 9999px;
        background: rgba(255,255,255,0.35);
        border: none; cursor: pointer; padding: 0;
        transition: background-color 200ms ease, width 200ms ease;
      }
      .carousel-dot:hover { background: rgba(255,255,255,0.60); }
      .carousel-dot.dot-active {
        background: #99B1EB;
        width: 24px;
      }
      .carousel-dot.dot-active:hover { background: #99B1EB; }

      /* Card tag (news / tech) */
      .card-tag {
        display: inline-flex; align-items: center;
        padding: 2px 8px; font-size: 12px; line-height: 1.5;
        border-radius: 4px;
        background: #F7F8FA;
        color: #333333;
        border: 1px solid #E5E5E5;
        white-space: nowrap;
      }

      /* News / Tech cards */
      .news-card {
        transition: transform 200ms ease, border-color 200ms ease;
      }
      .news-card:hover {
        transform: translateY(-2px);
        border-color: #00E5FF;
      }

      /* FAQ items (visible FAQ aligned with FAQPage Schema) */
      .faq-item {
        transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
      }
      .faq-item:hover {
        border-color: #00E5FF;
        box-shadow: 0 2px 4px rgba(0,0,0,0.06);
        transform: translateY(-1px);
      }
      .faq-item h3 {
        position: relative;
        padding-left: 32px;
      }
      .faq-item h3::before {
        content: 'Q';
        position: absolute;
        left: 0;
        top: 2px;
        font-family: 'Inter', 'Segoe UI', 'Arial', sans-serif;
        font-size: 14px;
        font-weight: 700;
        color: #002FA7;
        background: #E5EBFA;
        width: 22px;
        height: 22px;
        border-radius: 4px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        line-height: 1;
      }

      /* GEO summary box */
      .geo-summary-box li {
        padding: 6px 0;
      }
      @media (max-width: 640px) {
        .geo-summary-box li {
          flex-direction: column;
          gap: 4px;
        }
        .geo-summary-box li span:first-child {
          min-width: 0 !important;
        }
      }

      /* More link */
      .more-link { transition: color 200ms ease; }
      .more-link svg { transition: transform 200ms ease; }
      .more-link:hover svg { transform: translateX(3px); }

      /* Reduced motion */
      @media (prefers-reduced-motion: reduce) {
        *, *::before, *::after {
          animation-duration: 0.01ms !important;
          animation-iteration-count: 1 !important;
          transition-duration: 0.01ms !important;
        }
      }