* { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; color: #1a1a2e; overflow-x: hidden; }

    /* 滚动入场动画 */
    .fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
    .fade-in.visible { opacity: 1; transform: translateY(0); }
    .fade-in-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.6s ease, transform 0.6s ease; }
    .fade-in-left.visible { opacity: 1; transform: translateX(0); }
    .fade-in-right { opacity: 0; transform: translateX(40px); transition: opacity 0.6s ease, transform 0.6s ease; }
    .fade-in-right.visible { opacity: 1; transform: translateX(0); }
    .scale-in { opacity: 0; transform: scale(0.9); transition: opacity 0.5s ease, transform 0.5s ease; }
    .scale-in.visible { opacity: 1; transform: scale(1); }

    /* 导航栏 */
    .navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 0 60px; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s; height: 70px; background: rgba(255,255,255,0.02); }
    .navbar.scrolled { background: rgba(255,255,255,0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.08); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
    .nav-left { display: flex; align-items: center; gap: 40px; }
    .nav-logo { font-size: 22px; font-weight: 800; color: #fff; text-decoration: none; display: flex; align-items: center; gap: 10px; transition: color 0.3s; }
    .navbar.scrolled .nav-logo { color: #C8102E; }
    .nav-logo-icon { font-size: 28px; }
    .nav-links { display: flex; gap: 8px; list-style: none; }
    .nav-links a { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 15px; padding: 8px 16px; border-radius: 8px; transition: all 0.3s; font-weight: 500; }
    .nav-links a:hover { color: #fff; background: rgba(255,255,255,0.1); }
    .navbar.scrolled .nav-links a { color: #555; }
    .navbar.scrolled .nav-links a:hover { color: #C8102E; background: rgba(200,16,46,0.06); }
    .nav-right { display: flex; align-items: center; gap: 16px; }
    .nav-phone { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.9); text-decoration: none; font-size: 15px; font-weight: 600; padding: 8px 16px; border-radius: 8px; transition: all 0.3s; }
    .nav-phone:hover { background: rgba(255,255,255,0.1); }
    .navbar.scrolled .nav-phone { color: #333; }
    .navbar.scrolled .nav-phone:hover { background: #f5f5f5; }
    .nav-phone-icon { font-size: 18px; }
    .nav-btn { background: #C8102E; color: #fff; padding: 10px 24px; border-radius: 8px; text-decoration: none; font-size: 14px; font-weight: 600; transition: all 0.3s; box-shadow: 0 4px 12px rgba(200,16,46,0.3); }
    .nav-btn:hover { background: #a00d24; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(200,16,46,0.4); }
    .nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: #fff; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 8px; transition: all 0.3s; }
    .nav-toggle:hover { background: rgba(255,255,255,0.1); }
    .navbar.scrolled .nav-toggle { color: #333; }
    .navbar.scrolled .nav-toggle:hover { background: #f5f5f5; }
    .nav-mobile { display: none; position: fixed; top: 70px; left: 0; right: 0; background: #fff; box-shadow: 0 4px 20px rgba(0,0,0,0.1); padding: 16px; z-index: 999; border-radius: 0 0 16px 16px; }
    .nav-mobile.active { display: block; animation: slideDown 0.3s ease; }
    @keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
    .nav-mobile a { display: flex; align-items: center; gap: 12px; padding: 14px 16px; color: #333; text-decoration: none; font-size: 16px; border-radius: 10px; transition: all 0.2s; }
    .nav-mobile a:hover { background: #f5f5f5; }
    .nav-mobile a.nav-mobile-phone { color: #C8102E; font-weight: 600; margin-top: 8px; background: #fff5f5; }

    /* Hero */
    .hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 60px 80px; background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%); position: relative; overflow: hidden; }
    .hero-bg { position: absolute; top: 0; left: 0; right: 0; bottom: 0; }
    .hero-shape { position: absolute; border-radius: 50%; opacity: 0.1; }
    .hero-shape-1 { width: 800px; height: 800px; background: #C8102E; top: -300px; right: -200px; }
    .hero-shape-2 { width: 500px; height: 500px; background: #C8102E; bottom: -200px; left: -100px; }
    .hero-content { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; position: relative; z-index: 1; width: 100%; }
    .hero-text h1 { font-size: 56px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 24px; }
    .hero-text h1 span { color: #C8102E; }
    .hero-text p { font-size: 18px; color: rgba(255,255,255,0.7); line-height: 1.8; margin-bottom: 40px; }
    .hero-btns { display: flex; gap: 16px; }
    .hero-btn-primary { background: #C8102E; color: #fff; padding: 16px 40px; border-radius: 12px; text-decoration: none; font-size: 16px; font-weight: 600; transition: all 0.3s; box-shadow: 0 8px 24px rgba(200,16,46,0.4); }
    .hero-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(200,16,46,0.5); }
    .hero-btn-secondary { background: rgba(255,255,255,0.1); color: #fff; padding: 16px 40px; border-radius: 12px; text-decoration: none; font-size: 16px; font-weight: 500; border: 1px solid rgba(255,255,255,0.2); transition: all 0.3s; }
    .hero-btn-secondary:hover { background: rgba(255,255,255,0.2); }
    .hero-visual { display: flex; justify-content: center; }
    .hero-card { background: rgba(255,255,255,0.1); border-radius: 24px; padding: 40px; -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.1); }
    .hero-card-icon { font-size: 120px; text-align: center; }
    .hero-card-text { text-align: center; color: rgba(255,255,255,0.8); margin-top: 20px; font-size: 18px; }

    /* 特性 */
    .features { padding: 100px 60px; background: #fff; }
    .features-title { text-align: center; margin-bottom: 60px; }
    .features-title h2 { font-size: 40px; font-weight: 700; color: #1a1a2e; }
    .features-title p { font-size: 16px; color: #999; margin-top: 12px; }
    .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto; }
    .feature-card { padding: 40px 30px; border-radius: 16px; text-align: center; transition: all 0.3s; border: 1px solid #f0f0f5; }
    .feature-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
    .feature-icon { font-size: 48px; margin-bottom: 20px; }
    .feature-card h3 { font-size: 20px; color: #1a1a2e; margin-bottom: 12px; }
    .feature-card p { font-size: 14px; color: #999; line-height: 1.6; }

    /* AR 体验 */
    .ar-section { padding: 100px 60px; background: linear-gradient(135deg, #f5f6fa 0%, #eef1f8 100%); }
    .ar-content { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
    .ar-text h2 { font-size: 40px; font-weight: 700; color: #1a1a2e; margin-bottom: 20px; }
    .ar-text p { font-size: 16px; color: #666; line-height: 1.8; margin-bottom: 32px; }
    .ar-steps { display: flex; flex-direction: column; gap: 20px; }
    .ar-step { display: flex; align-items: center; gap: 16px; }
    .ar-step-num { width: 40px; height: 40px; background: #C8102E; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
    .ar-step-text { font-size: 16px; color: #333; }
    .ar-visual { background: #fff; border-radius: 24px; padding: 40px; box-shadow: 0 20px 60px rgba(0,0,0,0.08); text-align: center; }
    .ar-phone { width: 280px; height: 560px; background: linear-gradient(135deg, #1a1a2e, #0f3460); border-radius: 36px; margin: 0 auto; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
    .ar-phone::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 120px; height: 24px; background: #000; border-radius: 0 0 16px 16px; }
    .ar-phone-content { color: #fff; text-align: center; }
    .ar-phone-content .icon { font-size: 64px; }
    .ar-phone-content p { margin-top: 16px; font-size: 14px; opacity: 0.8; }

    /* 产品 */
    .products { padding: 100px 60px; background: #fff; }
    .products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto; }
    .product-card { border-radius: 16px; overflow: hidden; box-shadow: 0 4px 20px rgba(0,0,0,0.06); transition: all 0.3s; }
    .product-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }
    .product-img { height: 240px; background: linear-gradient(135deg, #f5f6fa, #eef1f8); display: flex; align-items: center; justify-content: center; font-size: 80px; }
    .product-info { padding: 24px; }
    .product-info h3 { font-size: 20px; color: #1a1a2e; margin-bottom: 8px; }
    .product-info p { font-size: 14px; color: #999; margin-bottom: 12px; }
    .product-price { font-size: 24px; color: #C8102E; font-weight: 700; }
    .product-price span { font-size: 14px; color: #999; font-weight: 400; }

    /* 数据 */
    .stats { padding: 80px 60px; background: linear-gradient(135deg, #C8102E, #8b0a1e); }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; max-width: 1200px; margin: 0 auto; text-align: center; }
    .stat-item h3 { font-size: 48px; color: #fff; font-weight: 800; }
    .stat-item p { font-size: 16px; color: rgba(255,255,255,0.8); margin-top: 8px; }

    /* 文章资讯 */
    .articles-section { padding: 80px 60px; background: #f5f6fa; }
    .articles-section h2 { font-size: 36px; font-weight: 700; color: #1a1a2e; text-align: center; }
    .articles-section > p { text-align: center; }
    .articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto; }
    .article-link { text-decoration: none; }
    .article-card { background: #fff; border-radius: 12px; padding: 30px; text-align: center; transition: all 0.3s; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
    .article-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
    .article-icon { font-size: 40px; margin-bottom: 16px; }
    .article-card h3 { font-size: 18px; color: #1a1a2e; margin-bottom: 8px; }
    .article-card p { font-size: 14px; color: #999; }
    .view-all { color: #4CAF50; font-size: 16px; text-decoration: none; font-weight: 500; }

    /* 微信二维码 */
    .wechat-section { padding: 80px 60px; background: #fff; }
    .wechat-content { max-width: 1000px; margin: 0 auto; display: flex; align-items: center; gap: 60px; }
    .wechat-text { flex: 1; }
    .wechat-text h2 { font-size: 36px; font-weight: 700; color: #1a1a2e; margin-bottom: 12px; }
    .wechat-text p { font-size: 16px; color: #666; margin-bottom: 24px; }
    .wechat-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .wechat-feature { font-size: 14px; color: #4CAF50; font-weight: 500; }
    .wechat-qr { text-align: center; }
    .qr-image { width: 220px; height: 220px; border-radius: 12px; box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
    .qr-tip { font-size: 14px; color: #999; margin-top: 12px; }

    /* CTA */
    .cta { padding: 100px 60px; text-align: center; background: #f5f6fa; }
    .cta h2 { font-size: 40px; font-weight: 700; color: #1a1a2e; margin-bottom: 16px; }
    .cta p { font-size: 18px; color: #666; margin-bottom: 40px; }
    .cta-btns { display: flex; justify-content: center; gap: 16px; }

    /* 页脚 */
    .footer { padding: 60px; background: #1a1a2e; color: #fff; }
    .footer-content { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
    .footer-brand h3 { font-size: 24px; color: #C8102E; margin-bottom: 16px; }
    .footer-brand p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.8; }
    .footer-col h4 { font-size: 16px; margin-bottom: 16px; }
    .footer-col ul { list-style: none; }
    .footer-col li { margin-bottom: 10px; }
    .footer-col a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 14px; transition: color 0.3s; }
    .footer-col a:hover { color: #C8102E; }
    .footer-bottom { max-width: 1200px; margin: 40px auto 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; font-size: 13px; color: rgba(255,255,255,0.4); }

    /* 服务区域 */
    .service-area { padding: 80px 60px; background: #fff; }
    .service-area-title { text-align: center; font-size: 36px; font-weight: 700; margin-bottom: 48px; color: #1a1a2e; }
    .service-area-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto; }
    .service-area-card { padding: 28px 20px; background: #f5f6fa; border-radius: 16px; text-align: center; transition: all 0.3s; cursor: default; }
    .service-area-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); background: #fff; }
    .service-area-card .area-icon { font-size: 28px; margin-bottom: 10px; }
    .service-area-card .area-name { font-weight: 700; color: #1a1a2e; font-size: 16px; }
    .service-area-card .area-detail { font-size: 13px; color: #999; margin-top: 6px; line-height: 1.5; }

    /* 浮动拨号按钮（移动端） */
    .floating-call { display: none; position: fixed; bottom: 24px; right: 24px; z-index: 998; width: 56px; height: 56px; background: #C8102E; border-radius: 50%; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(200,16,46,0.45); text-decoration: none; animation: floatPulse 2s ease-in-out infinite; transition: transform 0.2s; }
    .floating-call:active { transform: scale(0.92); }
    .floating-call-icon { font-size: 24px; }
    @keyframes floatPulse { 0%, 100% { box-shadow: 0 4px 16px rgba(200,16,46,0.45); } 50% { box-shadow: 0 4px 24px rgba(200,16,46,0.65), 0 0 0 8px rgba(200,16,46,0.12); } }

    /* 统计数字递增动画光晕 */
    .stat-item h3 { position: relative; }
    .stat-item .stat-glow { position: absolute; bottom: -4px; left: 50%; transform: translateX(-50%); width: 60%; height: 3px; background: rgba(255,255,255,0.4); border-radius: 2px; }

    /* 特性卡片渐变边框 */
    .feature-card { background: #fff; position: relative; }
    .feature-card::before { content: ''; position: absolute; inset: 0; border-radius: 16px; padding: 1px; background: linear-gradient(135deg, transparent, rgba(200,16,46,0.15)); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; opacity: 0; transition: opacity 0.3s; }
    .feature-card:hover::before { opacity: 1; }

    /* 产品卡片悬停光效 */
    .product-card { position: relative; overflow: hidden; }
    .product-card::after { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(200,16,46,0.06) 0%, transparent 70%); opacity: 0; transition: opacity 0.3s; pointer-events: none; }
    .product-card:hover::after { opacity: 1; }

    /* 微信区优化 */
    .wechat-section .wechat-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .wechat-feature { font-size: 14px; color: #4CAF50; font-weight: 500; display: flex; align-items: center; gap: 4px; }

    /* QR码弹窗 */
    .qr-modal { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); z-index: 9999; justify-content: center; align-items: center; backdrop-filter: blur(4px); }
    .qr-modal.active { display: flex; }
    .qr-modal-content { background: #fff; border-radius: 20px; padding: 40px; max-width: 360px; text-align: center; position: relative; animation: modalIn 0.3s ease; }
    @keyframes modalIn { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
    .qr-modal-close { position: absolute; top: 12px; right: 16px; font-size: 28px; color: #999; cursor: pointer; background: none; border: none; line-height: 1; }
    .qr-modal-close:hover { color: #333; }
    .qr-modal-title { font-size: 22px; font-weight: 700; color: #1a1a2e; margin-bottom: 8px; }
    .qr-modal-desc { font-size: 14px; color: #999; margin-bottom: 24px; }
    .qr-code-box { width: 200px; height: 200px; margin: 0 auto 20px; background: #f5f6fa; border-radius: 12px; display: flex; align-items: center; justify-content: center; border: 2px dashed #ddd; }
    .qr-code-box canvas { border-radius: 8px; }
    .qr-modal-tip { font-size: 13px; color: #C8102E; font-weight: 500; }
    .qr-modal-phone { font-size: 16px; color: #333; margin-top: 16px; }
    .qr-modal-phone a { color: #C8102E; text-decoration: none; font-weight: 600; }

    /* 响应式 - 平板 */
    @media (max-width: 1024px) {
      .navbar { padding: 0 30px; }
      .nav-links { gap: 4px; }
      .nav-links a { padding: 8px 12px; font-size: 14px; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .products-grid { grid-template-columns: repeat(2, 1fr); }
      .service-area-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* 响应式 - 手机 */
    @media (max-width: 768px) {
      .navbar { padding: 0 16px; }
      .nav-links { display: none; }
      .nav-right { display: none; }
      .nav-toggle { display: flex; }
      .hero { padding: 80px 16px 40px; }
      .hero-content { grid-template-columns: 1fr; gap: 30px; }
      .hero-text h1 { font-size: 28px; }
      .hero-text p { font-size: 14px; }
      .hero-btns { flex-direction: column; }
      .hero-btn-primary, .hero-btn-secondary { width: 100%; text-align: center; }
      .hero-visual { display: none; }
      .features { padding: 60px 16px; }
      .features-title h2 { font-size: 28px; }
      .features-grid { grid-template-columns: 1fr; gap: 16px; }
      .feature-card { padding: 24px 20px; }
      .ar-section { padding: 60px 16px; }
      .ar-content { grid-template-columns: 1fr; gap: 30px; }
      .ar-text h2 { font-size: 28px; }
      .ar-visual { display: none; }
      .products { padding: 60px 16px; }
      .products-grid { grid-template-columns: 1fr; gap: 16px; }
      .stats { padding: 60px 16px; }
      .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
      .stat-item h3 { font-size: 32px; }
      .articles-section { padding: 60px 16px; }
      .articles-grid { grid-template-columns: 1fr; }
      .wechat-section { padding: 60px 16px; }
      .wechat-content { flex-direction: column; text-align: center; gap: 30px; }
      .wechat-features { justify-items: center; }
      .qr-image { width: 180px; height: 180px; }
      .cta { padding: 60px 16px; }
      .cta h2 { font-size: 28px; }
      .cta p { font-size: 14px; }
      .cta-btns { flex-direction: column; align-items: center; }
      .footer { padding: 40px 16px; }
      .footer-content { grid-template-columns: 1fr; gap: 30px; }

      /* 移动端服务区域 */
      .service-area { padding: 60px 16px; }
      .service-area-title { font-size: 28px; }
      .service-area-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
      .service-area-card { padding: 20px 12px; }
      .service-area-card .area-icon { font-size: 22px; }
      .service-area-card .area-name { font-size: 14px; }
      .service-area-card .area-detail { font-size: 12px; }

      /* 移动端浮动拨号按钮 */
      .floating-call { display: flex; }
    }