:root{--color-brand-blue:#005CA9;--color-brand-red:#D92323;--color-brand-text-blue:#0077C8;--color-dark-blue:#003D73;--color-light-blue:#E8F4FD;--color-blue-light-2:#B3D9F2;--color-gray-100:#F5F5F5;--color-gray-200:#E8E8E8;--color-gray-400:#999999;--color-gray-600:#666666;--color-gray-900:#1A1A1A;--color-success:#22C55E;--color-warning:#EAB308;--color-danger:#EF4444;--color-info:#3B82F6;--color-gold:#FFD700;--font-family:'Inter','Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif;--text-h1:52px;--text-h2:32px;--text-h3:24px;--text-h4:18px;--text-body:16px;--text-body-sm:14px;--text-caption:12px;--leading-h1:1.15;--leading-h2:1.3;--leading-body:1.6;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--space-9:96px;--space-10:128px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-lg:0 8px 24px rgba(0,0,0,0.12);--shadow-xl:0 16px 48px rgba(0,0,0,0.16);--transition-fast:0.2s ease;--transition-normal:0.25s ease;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;scroll-padding-top:68px;}
body{font-family:var(--font-family);font-size:var(--text-body);line-height:var(--leading-body);color:var(--color-gray-900);background:#fff;-webkit-font-smoothing:antialiased;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;height:auto;display:block;}
button{cursor:pointer;font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 40px;}
.section{padding:80px 0;}
.section-header{text-align:center;margin-bottom:48px;}
.section-tag{display:inline-block;background:var(--color-light-blue);color:var(--color-brand-blue);font-size:var(--text-caption);font-weight:600;padding:4px 14px;border-radius:var(--radius-full);margin-bottom:12px;letter-spacing:1px;text-transform:uppercase;}
.section-title{font-size:var(--text-h2);font-weight:700;color:var(--color-dark-blue);margin-bottom:12px;line-height:var(--leading-h2);}
.section-desc{font-size:var(--text-body);color:var(--color-gray-600);max-width:600px;margin:0 auto;line-height:var(--leading-body);}
.bg-light{background:#F8FAFC;}
.bg-dark{background:var(--color-dark-blue);color:white;}
.bg-dark .section-title{color:white;}
.bg-dark .section-desc{color:var(--color-blue-light-2);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 36px;border-radius:10px;font-size:var(--text-body);font-weight:600;border:none;cursor:pointer;transition:all 0.25s ease;text-decoration:none;letter-spacing:0.3px;}
.btn-primary{background:var(--color-brand-red);color:white;box-shadow:0 4px 14px rgba(217,35,35,0.25);}
.btn-primary:hover{background:#b51d1d;transform:translateY(-2px);box-shadow:0 8px 28px rgba(217,35,35,0.35);}
.btn-secondary{background:rgba(255,255,255,0.12);color:white;border:1px solid rgba(255,255,255,0.3);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);}
.btn-secondary:hover{background:rgba(255,255,255,0.22);transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--color-brand-blue);border:2px solid var(--color-brand-blue);}
.btn-outline:hover{background:var(--color-brand-blue);color:white;}
.navbar{display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 40px;background:white;border-bottom:1px solid var(--color-gray-200);position:sticky;top:0;z-index:100;}
.navbar .logo{display:flex;align-items:center;gap:10px;}
.navbar .nav-links{display:flex;gap:28px;align-items:center;list-style:none;}
.navbar .nav-links a{color:#333;font-size:15px;font-weight:500;transition:color var(--transition-fast);}
.navbar .nav-links a:hover,.navbar .nav-links a.active{color:var(--color-brand-blue);}
.navbar .btn-phone{background:var(--color-brand-red);color:white;padding:8px 20px;border-radius:var(--radius-md);font-weight:600;font-size:14px;}
.navbar .btn-phone:hover{background:#b51d1d;}
.hero{position:relative;overflow:hidden;height:560px;}
.hero-slides{position:relative;width:100%;height:100%;}
.hero-slide{padding:0;text-align:center;color:white;position:absolute;inset:0;height:560px;display:flex;align-items:center;justify-content:center;opacity:0;z-index:1;transition:opacity 0.8s ease;pointer-events:none;background-size:cover;background-position:center;background-repeat:no-repeat;}
.hero-slide.active{opacity:1;position:relative;z-index:2;pointer-events:auto;}
.hero-slide.fade-out{opacity:0;z-index:3;transition:opacity 1.2s ease;position:absolute;pointer-events:none;}
@keyframes heroContentIn{from{opacity:0;transform:translateY(10px);}
to{opacity:1;transform:translateY(0);}
}
.hero-slide.active .hero-badge{animation:heroContentIn 0.7s ease-out 0.45s both;}
.hero-slide.active h1{animation:heroContentIn 0.7s ease-out 0.65s both;}
.hero-slide.active .hero-content p{animation:heroContentIn 0.7s ease-out 0.85s both;}
.hero-slide.active .hero-actions{animation:heroContentIn 0.7s ease-out 1.05s both;}
.hero-slide .hero-content{position:relative;z-index:2;padding:40px 0;text-align:center;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.2);padding:6px 18px;border-radius:var(--radius-full);font-size:13px;margin-bottom:24px;backdrop-filter:blur(4px);text-shadow:0 1px 4px rgba(0,0,0,0.3);}
.hero-badge span{color:var(--color-gold);font-weight:700;}
.hero h1{font-size:var(--text-h1);font-weight:800;margin-bottom:16px;line-height:var(--leading-h1);text-shadow:0 3px 12px rgba(0,0,0,0.5),0 1px 4px rgba(0,0,0,0.3);}
.hero h1 em{font-style:normal;color:var(--color-gold);text-shadow:0 2px 10px rgba(0,0,0,0.5),0 0 4px rgba(0,0,0,0.2);}
.hero p{font-size:18px;color:rgba(255,255,255,0.9);max-width:560px;margin:0 auto 36px;line-height:var(--leading-body);text-shadow:0 2px 8px rgba(0,0,0,0.6),0 1px 3px rgba(0,0,0,0.3);}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:32px;}
.hero-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3;}
.hero-dots .hdot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,0.35);cursor:pointer;transition:all var(--transition-fast);}
.hero-dots .hdot.active{background:white;width:28px;border-radius:5px;}
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--color-gray-200);}
.stat-item{background:white;padding:40px 20px;text-align:center;}
.stat-number{font-size:44px;font-weight:800;color:var(--color-brand-blue);line-height:1;}
.stat-number .plus{color:var(--color-brand-red);}
.stat-label{font-size:14px;color:var(--color-gray-600);margin-top:8px;}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.product-card{background:white;border-radius:14px;padding:32px;border:1px solid var(--color-gray-200);transition:var(--transition-normal);display:block;text-decoration:none;color:inherit;}
.product-card:hover{border-color:var(--color-brand-blue);box-shadow:0 8px 24px rgba(0,92,169,0.1);transform:translateY(-4px);}
.product-icon{width:48px;height:48px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px;}
.product-icon.blue{background:var(--color-light-blue);color:var(--color-brand-blue);}
.product-icon.red{background:#FEF2F2;color:var(--color-brand-red);}
.product-icon.green{background:#F0FDF4;color:var(--color-success);}
.product-card h3{font-size:var(--text-h4);font-weight:700;margin-bottom:8px;}
.product-card p{font-size:var(--text-body-sm);color:var(--color-gray-600);line-height:var(--leading-body);margin-bottom:16px;}
.product-tag{display:inline-block;font-size:var(--text-caption);color:var(--color-brand-blue);background:var(--color-light-blue);padding:2px 10px;border-radius:var(--radius-sm);margin-right:6px;margin-bottom:4px;}
.solution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.solution-card{background:white;border-radius:var(--radius-lg);padding:28px 20px;text-align:center;border:1px solid var(--color-gray-200);transition:var(--transition-fast);}
.solution-card:hover{border-color:var(--color-brand-blue);}
.solution-card .icon{font-size:36px;margin-bottom:12px;}
.solution-card h4{font-size:15px;font-weight:600;margin-bottom:4px;}
.solution-card .sol-desc{font-size:13px;color:#666;line-height:1.6;margin:0;}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.case-card{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-gray-200);transition:var(--transition-fast);}
.case-card:hover{border-color:var(--color-brand-blue);box-shadow:var(--shadow-md);}
.case-img{height:160px;background:linear-gradient(135deg,var(--color-light-blue),var(--color-blue-light-2));display:flex;align-items:center;justify-content:center;color:var(--color-brand-blue);font-size:14px;font-weight:600;}
.case-img.red{background:linear-gradient(135deg,#FEF2F2,#FECACA);color:var(--color-brand-red);}
.case-body{padding:16px 20px;}
.case-body h4{font-size:15px;font-weight:600;margin-bottom:4px;}
.case-body p{font-size:13px;color:var(--color-gray-400);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-gray-200);display:block;text-decoration:none;color:inherit;transition:var(--transition-fast);}
.news-card:hover{border-color:var(--color-brand-blue);box-shadow:var(--shadow-md);}
.news-img{height:180px;background:linear-gradient(135deg,var(--color-light-blue),#F8FAFC);}
.news-body{padding:20px;}
.news-date{font-size:var(--text-caption);color:var(--color-gray-400);margin-bottom:8px;}
.news-body h4{font-size:15px;font-weight:600;margin-bottom:6px;}
.news-body p{font-size:13px;color:var(--color-gray-400);line-height:1.5;}
.site-footer{background:var(--color-gray-900);color:rgba(255,255,255,0.6);padding:60px 0 30px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-brand{font-size:20px;font-weight:700;color:white;margin-bottom:12px;}
.footer p{font-size:var(--text-body-sm);line-height:1.8;}
.footer h5{color:white;font-size:15px;margin-bottom:16px;}
.footer a{display:block;color:rgba(255,255,255,0.5);font-size:14px;line-height:1.8;margin-bottom:2px;padding:3px 0;border-bottom:1px solid rgba(255,255,255,0.06);transition:all var(--transition-fast);}
.footer a:last-child{border-bottom:none;}
.footer a:hover{color:white;padding-left:4px;}
.footer a:hover{color:white;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:20px;text-align:center;font-size:13px;}
.link-arrow{color:var(--color-brand-blue);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:4px;transition:gap var(--transition-fast);}
.link-arrow:hover{gap:8px;}
.about-content{max-width:900px;margin:0 auto;}
.about-text{font-size:15px;line-height:1.8;color:#444;max-width:700px;margin:0 auto 32px;text-align:center;}
.about-text p{margin-bottom:12px;}
.about-highlights{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.highlight-item{text-align:center;padding:24px 16px;background:var(--color-light);border-radius:var(--radius-lg);border:1px solid var(--color-gray-200);}
.highlight-item .hl-num{font-size:28px;font-weight:800;color:var(--color-brand-blue);margin-bottom:6px;}
.highlight-item .hl-num span{font-size:16px;}
.highlight-item .hl-label{font-size:13px;color:#888;}
@media (max-width:1024px){.product-grid,.news-grid{grid-template-columns:repeat(2,1fr);}
.solution-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:768px){.container{padding:0 20px;}
.section{padding:48px 0;}
.navbar{padding:0 20px;height:auto;padding:12px 20px;flex-wrap:wrap;}
.navbar .nav-links{display:none;}
.hero{padding:60px 0 40px;}
.hero h1{font-size:32px;}
.stats-bar{grid-template-columns:repeat(2,1fr);}
.product-grid,.case-grid,.news-grid,.solution-grid{grid-template-columns:1fr;}
.footer-grid{grid-template-columns:1fr;}
.section-title{font-size:26px;}
}
.detail-page{padding-top:80px;min-height:60vh;}
.detail-breadcrumb{font-size:13px;color:#999;margin-bottom:24px;}
.detail-breadcrumb a{color:var(--color-brand-blue);text-decoration:none;}
.detail-breadcrumb a:hover{text-decoration:underline;}
.detail-article{max-width:800px;margin:0 auto;}
.detail-header{margin-bottom:32px;}
.detail-date{font-size:13px;color:var(--color-brand-blue);font-weight:600;margin-bottom:12px;}
.detail-title{font-size:28px;font-weight:700;line-height:1.3;margin-bottom:12px;color:var(--color-gray-900);}
.detail-meta{font-size:13px;color:#999;display:flex;gap:20px;}
.detail-cover{margin-bottom:32px;border-radius:var(--radius-lg);overflow:hidden;}
.detail-cover-placeholder{width:100%;height:360px;background:var(--color-light-blue);display:flex;align-items:center;justify-content:center;font-size:40px;color:var(--color-blue-light-2);border-radius:var(--radius-lg);}
.detail-body{font-size:16px;line-height:1.9;color:#444;}
.detail-body p{margin-bottom:20px;}
.detail-body h2{font-size:20px;font-weight:700;margin:32px 0 16px;color:var(--color-gray-900);}
.detail-body ul{margin:0 0 20px 20px;padding:0;}
.detail-body ul li{margin-bottom:8px;list-style:disc;}
.detail-nav{margin-top:48px;padding-top:24px;padding-bottom:24px;border-top:1px solid var(--color-gray-200);display:flex;justify-content:space-between;}
.detail-nav-link{font-size:14px;color:var(--color-brand-blue);text-decoration:none;font-weight:500;}
.detail-nav-link:hover{text-decoration:underline;}
.core-products{display:flex;flex-direction:column;gap:32px;margin-top:24px;}
.core-product-card{display:flex;background:#fff;border:1px solid #eef2f6;border-radius:16px;overflow:hidden;transition:box-shadow .25s;}
.core-product-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.08);}
.core-product-img{flex:0 0 320px;background:#F8FAFC;display:flex;align-items:center;justify-content:center;padding:24px;}
.core-product-img img{max-width:100%;max-height:240px;object-fit:contain;}
.core-product-info{flex:1;padding:28px 32px;}
.core-product-badge{display:inline-block;background:#E8F4FD;color:#005CA9;font-size:12px;font-weight:600;padding:3px 10px;border-radius:4px;margin-bottom:10px;}
.core-product-info h3{font-size:18px;font-weight:700;color:#111;margin-bottom:8px;}
.core-product-info p{font-size:14px;color:#555;line-height:1.7;margin-bottom:14px;}
.core-product-features{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:6px 16px;}
.core-product-features li{font-size:13px;color:#444;padding-left:18px;position:relative;}
.core-product-features li::before{content:"✓";position:absolute;left:0;color:#005CA9;font-weight:700;}
@media (max-width:768px){.core-product-card{flex-direction:column;}
.core-product-img{flex:none;padding:16px;}
.core-product-img img{max-height:160px;}
.core-product-features{grid-template-columns:1fr;}
}
.news-list{padding:40px 0 60px;}
.news-list-item{display:flex;gap:24px;padding:24px 0;border-bottom:1px solid #eef2f6;align-items:flex-start;}
.news-list-item:first-child{padding-top:0;}
.news-list-thumb{flex:0 0 240px;height:150px;border-radius:10px;overflow:hidden;}
.news-list-thumb img{width:100%;height:100%;object-fit:cover;}
.news-list-body{flex:1;}
.news-list-date{font-size:13px;color:#999;margin-bottom:4px;}
.news-list-body h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.news-list-body h3 a{color:#111;text-decoration:none;}
.news-list-body h3 a:hover{color:#005CA9;}
.news-list-body p{font-size:14px;color:#666;line-height:1.6;}
@media (max-width:600px){.news-list-item{flex-direction:column;}
.news-list-thumb{flex:none;width:100%;height:180px;}
}
.news-section-footer{display:flex;justify-content:center;margin-top:32px;}
.product-banner{position:relative;overflow:hidden;margin-bottom:48px;min-height:400px;display:flex;align-items:center;border-radius:var(--radius-lg);}
.product-banner-bg{position:absolute;inset:0;z-index:0;}
.product-banner-content h1,.product-banner-content p,.product-banner-content .product-detail-summary{text-shadow:2px 2px 8px rgba(0,0,0,0.7);}
.product-banner-content{position:relative;z-index:1;max-width:640px;padding:48px 0;}
.product-banner-content .detail-title{color:white;font-size:32px;text-shadow:0 2px 8px rgba(0,0,0,0.3);}
.product-banner-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.product-banner-tag{padding:4px 14px;border-radius:20px;background:rgba(255,255,255,0.2);color:white;font-size:13px;font-weight:500;backdrop-filter:blur(4px);}
.product-detail-summary{font-size:16px;line-height:1.8;color:#555;margin:20px 0;}
.product-detail-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}
.product-detail-tag{padding:4px 12px;border-radius:20px;background:var(--color-light-blue);color:var(--color-brand-blue);font-size:12px;font-weight:500;}
.detail-section{margin-bottom:48px;}
.first-section{margin-top:32px;}
.related-products-section{margin-top:64px;}
.detail-section + .detail-section{margin-top:64px;}
.section-related{margin-top:64px;}
.solution-first{padding-top:16px;}
.detail-section-title{font-size:22px;font-weight:700;margin-bottom:24px;color:var(--color-gray-900);}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.feature-card{padding:24px;border:1px solid var(--color-gray-200);border-radius:var(--radius-lg);transition:var(--transition-fast);}
.feature-card:hover{border-color:var(--color-brand-blue);box-shadow:var(--shadow-md);}
.feature-icon{font-size:32px;margin-bottom:12px;}
.feature-card h4{font-size:16px;font-weight:600;margin-bottom:8px;}
.feature-card p{font-size:14px;color:#666;line-height:1.6;}
.specs-section{margin-bottom:32px;}
.specs-product-title{font-size:16px;font-weight:600;margin-bottom:12px;color:var(--color-brand-blue);}
.specs-table-wrap{border:1px solid var(--color-gray-200);border-radius:var(--radius-lg);overflow:hidden;}
.specs-table{width:100%;border-collapse:collapse;}
.specs-table th,.specs-table td{padding:12px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--color-gray-200);}
.specs-table th{background:var(--color-light-blue);font-weight:600;color:var(--color-brand-blue);width:120px;white-space:nowrap;}
.specs-table td{color:#555;}
.specs-table tr:last-child th,.specs-table tr:last-child td{border-bottom:none;}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.scene-item{padding:20px;text-align:center;font-size:15px;font-weight:500;color:#444;background:var(--color-light);border:1px solid var(--color-gray-200);border-radius:var(--radius-lg);}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{display:block;padding:24px;text-align:center;border:1px solid var(--color-gray-200);border-radius:var(--radius-lg);text-decoration:none;color:inherit;transition:var(--transition-fast);}
.related-card:hover{border-color:var(--color-brand-blue);box-shadow:var(--shadow-md);}
.related-icon{font-size:36px;margin-bottom:12px;}
.related-card h4{font-size:15px;font-weight:600;margin-bottom:4px;}
.related-card p{font-size:13px;color:#999;}
@media (max-width:768px){.feature-grid,.scene-grid{grid-template-columns:1fr;}
.related-grid{grid-template-columns:repeat(2,1fr);}
.product-banner-content{max-width:100%;}
.product-banner-content .detail-title{font-size:24px;}
}
@media (max-width:480px){.hero h1{font-size:28px;}
.stat-number{font-size:32px;}
.detail-title{font-size:22px;}
.detail-cover-placeholder{height:200px;}
}
.menu-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;width:36px;height:36px;cursor:pointer;background:none;border:none;padding:0;gap:5px;flex-shrink:0;}
.menu-toggle span{display:block;width:22px;height:2.5px;background:var(--color-gray-800,#1a1a1a);border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease;}
.menu-toggle.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}
.menu-toggle.active span:nth-child(2){opacity:0;}
.menu-toggle.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}
@media (max-width:768px){.navbar{padding:0 16px;}
.menu-toggle{display:flex;}
.navbar .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:white;flex-direction:column;padding:8px 0;border-bottom:1px solid var(--color-gray-200);box-shadow:0 4px 12px rgba(0,0,0,0.08);z-index:99;}
.navbar .nav-links.open{display:flex;}
.navbar .nav-links li{width:100%;}
.navbar .nav-links a{display:block;padding:12px 24px;font-size:15px;border-bottom:none;}
.navbar .nav-links a:hover,.navbar .nav-links a.active{background:var(--color-gray-50,#f8f9fa);color:var(--color-brand-blue);}
.btn-phone{font-size:12px;padding:0 10px;height:32px;}
}
@media (max-width:768px){.hero-slide{height:400px;}
.hero-slide h1{font-size:28px;}
.hero-slide .hero-content p{font-size:14px;}
.hero-badge{font-size:12px;padding:6px 14px;}
.hero-actions{flex-direction:column;gap:10px;align-items:center;}
.stats-bar .stats-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
.stats-bar .stat-item{padding:16px;}
.stat-item .num{font-size:28px;}
.stat-item .label{font-size:12px;}
.section{padding:40px 0;}
.section-title{font-size:22px;}
.section-subtitle{font-size:14px;}
.feature-grid,.solution-grid{grid-template-columns:1fr;gap:12px;}
.product-grid{grid-template-columns:1fr;gap:12px;}
.product-card{padding:20px;}
.case-grid{grid-template-columns:1fr;gap:12px;}
.case-card{display:block !important;}
.case-card .case-img,.case-card .case-body{width:100%;}
.news-grid{grid-template-columns:1fr;gap:12px;}
.about-content{flex-direction:column;gap:20px;}
.about-stats{grid-template-columns:repeat(2,1fr);}
.cert-grid{grid-template-columns:repeat(2,1fr);gap:10px;}
.cert-item{padding:16px;}
.site-footer{padding:40px 0 20px;}
.footer-grid{grid-template-columns:1fr;gap:24px;}
.footer-grid div:nth-child(2),.footer-grid div:nth-child(3){grid-column:1;}
.detail-page{padding-top:0;}
.detail-breadcrumb{font-size:12px;padding:12px 0;}
.detail-title{font-size:24px;}
.product-detail-summary{font-size:14px;}
.product-banner{padding:40px 0;}
.product-banner-content{padding:32px 0 24px;}
.product-banner-tags{flex-wrap:wrap;gap:6px;}
.product-banner-tag{font-size:11px;padding:4px 10px;}
.detail-section{margin-bottom:32px;}
.detail-section + .detail-section{margin-top:40px;}
.detail-section-title{font-size:20px;margin-bottom:16px;}
.feature-grid,.core-products,.ebike-products,.solution-scenes,.building-products,.scene-grid,.related-grid{grid-template-columns:1fr;gap:12px;}
.feature-card,.solution-scene-card,.building-product,.scene-item,.related-card{padding:16px;}
.core-product-card{flex-direction:column;}
.core-product-card .core-product-icon{margin-right:0;margin-bottom:12px;}
.core-product-features{grid-template-columns:1fr;}
.product-spec{padding:16px;}
.spec-row{flex-direction:column;gap:4px;}
.spec-label{width:auto;}
.related-icon{font-size:28px;}
.page-hero{padding:80px 0 40px;}
.page-hero h1{font-size:28px;}
.stats-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
.values-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
.honor-list{grid-template-columns:1fr;gap:12px;}
.case-detail-block{padding:32px 0;}
.case-detail-header{flex-direction:column;text-align:center;}
.highlight-row{grid-template-columns:1fr;gap:12px;}
.container{padding-left:16px;padding-right:16px;}
.hero-dots{bottom:16px;}
.hero-dots .hdot{width:8px;height:8px;}
.news-detail-content{padding:0;}
}
@media (max-width:480px){.hero-slide h1{font-size:22px;}
.hero-slide{height:320px;}
.stat-item .num{font-size:24px;}
.case-detail-icon{width:48px;height:48px;font-size:24px;}
.contact-item{flex-direction:column;align-items:flex-start;gap:8px;}
}
.animate-on-scroll{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease;}
.animate-on-scroll.visible{opacity:1;transform:translateY(0);}
.animate-on-scroll.visible-delay-1{transition-delay:0.1s;}
.animate-on-scroll.visible-delay-2{transition-delay:0.2s;}
.animate-on-scroll.visible-delay-3{transition-delay:0.3s;}
.solution-card,.product-card,.case-card,.news-card{transition:transform 0.3s ease,box-shadow 0.3s ease;}
.solution-card:hover,.product-card:hover,.case-card:hover,.news-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,0.1);}
.about-content img,.case-image,.product-image{transition:transform 0.4s ease,box-shadow 0.3s ease;}
.about-content img:hover,.case-image:hover,.product-image:hover{transform:scale(1.02);box-shadow:0 8px 24px rgba(0,0,0,0.12);}
.hero-content-right{text-align:right;}
.hero-content-right .hero-content{text-align:right;}
.hero-content-right .hero-badge{margin-left:auto;}
.hero-content-right .hero-content p{margin-left:auto;}
.hero-content-right .hero-actions{justify-content:center;}
.cta-banner{background:linear-gradient(135deg,#003D73 0%,#005CA9 40%,#0077C8 100%);position:relative;overflow:hidden;}
.cta-banner::before{content:'';position:absolute;top:-50%;right:-20%;width:500px;height:500px;border-radius:50%;background:rgba(255,255,255,0.03);}
.cta-banner::after{content:'';position:absolute;bottom:-30%;left:-10%;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,0.02);}
.cta-banner .btn-secondary{background:rgba(255,255,255,0.12);color:white;border:1px solid rgba(255,255,255,0.25);backdrop-filter:blur(6px);}
.cta-banner .btn-secondary:hover{background:rgba(255,255,255,0.2);transform:translateY(-2px);}
@media (max-width:768px){.cta-banner h2{font-size:24px;}
.cta-banner .container{padding:40px 0;}
}
#backToTop{position:fixed;bottom:100px;right:24px;width:44px;height:44px;border-radius:50%;background:#003D73;color:white;font-size:20px;border:none;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(20px);transition:all 0.3s ease;z-index:999;box-shadow:0 4px 12px rgba(0,61,115,0.3);}
#backToTop.show{opacity:1;visibility:visible;transform:translateY(0);}
#backToTop:hover{background:#005CA9;transform:translateY(-3px);box-shadow:0 6px 16px rgba(0,61,115,0.4);}
.online-chat{position:fixed;bottom:30px;right:24px;z-index:999;}
.online-chat .chat-btn{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#c41e1e,#e63946);color:white;font-size:24px;text-decoration:none;box-shadow:0 4px 16px rgba(196,30,30,0.35);transition:all 0.3s ease;animation:pulse-chat 2s infinite;}
.online-chat .chat-btn:hover{transform:scale(1.1);box-shadow:0 6px 20px rgba(196,30,30,0.45);}
@keyframes pulse-chat{0%{box-shadow:0 4px 16px rgba(196,30,30,0.35);}
50%{box-shadow:0 4px 24px rgba(196,30,30,0.55);}
100%{box-shadow:0 4px 16px rgba(196,30,30,0.35);}
}
.search-bar{display:flex;gap:0;max-width:500px;margin:0 auto 32px;border-radius:10px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,0.06);}
.search-bar input{flex:1;padding:12px 16px;border:1px solid #e0e0e0;border-right:none;border-radius:10px 0 0 10px;font-size:14px;outline:none;transition:border-color 0.2s;}
.search-bar input:focus{border-color:#003D73;}
.search-bar button{padding:12px 20px;background:#003D73;color:white;border:none;border-radius:0 10px 10px 0;font-size:14px;cursor:pointer;font-weight:600;transition:background 0.2s;}
.search-bar button:hover{background:#005CA9;}
@media (max-width:768px){#backToTop{bottom:90px;right:16px;width:38px;height:38px;font-size:16px;}
.online-chat{bottom:24px;right:16px;}
.online-chat .chat-btn{width:44px;height:44px;font-size:20px;}
.search-bar{max-width:100%;margin-left:16px;margin-right:16px;}
}
.lang-switch{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:600;color:#003D73;text-decoration:none;padding:6px 12px;border-radius:6px;border:1px solid rgba(0,61,115,0.2);transition:all 0.2s;background:rgba(255,255,255,0.9);}
.lang-switch:hover{background:#003D73;color:white;border-color:#003D73;}
@media (max-width:768px){.lang-switch{display:none;}
}
@media (max-width:768px){.hero h1{font-size:26px !important;}
.hero-content{padding:20px 0 !important;}
.hero-badge{font-size:12px !important;padding:4px 10px !important;}
.hero p{font-size:14px !important;}
.hero-actions{flex-direction:column;gap:10px;}
.hero-actions .btn,.hero-actions button{width:100%;text-align:center;}
.navbar .nav-links.open{display:flex !important;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:white;padding:16px 24px;box-shadow:0 8px 24px rgba(0,0,0,0.12);z-index:100;gap:0;}
.navbar .nav-links.open li{width:100%;border-bottom:1px solid #f0f0f0;}
.navbar .nav-links.open li a{display:block;padding:12px 0;font-size:15px;}
.navbar .nav-links.open li:last-child{border-bottom:none;}
.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
.menu-toggle.active span:nth-child(2){opacity:0;}
.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}
.stats-bar{grid-template-columns:repeat(2,1fr);gap:12px;}
.cta-banner h2{font-size:22px !important;}
.cta-banner .container{padding:32px 16px !important;}
.solution-grid,.product-grid,.case-grid{gap:16px;}
.news-grid{gap:16px;}
.cert-grid{grid-template-columns:repeat(2,1fr);gap:10px;}
.site-footer .footer-grid div{margin-bottom:8px;}
.site-footer a[style*="display:block"]{display:block !important;margin-bottom:4px;padding:4px 0;border-bottom:1px solid rgba(255,255,255,0.06);}
.site-footer h5{margin-top:16px;margin-bottom:8px;}
.site-footer .footer-brand{font-size:18px;}
.site-footer p{font-size:13px;}
}
@media (max-width:480px){.container{padding:0 16px;}
.section{padding:32px 0;}
.hero h1{font-size:22px !important;}
.section-title{font-size:22px;}
.section-desc{font-size:13px;}
.stats-grid{grid-template-columns:repeat(2,1fr);gap:8px;}
.btn{font-size:13px;padding:10px 20px;}
.product-card{padding:20px;}
.product-card h3{font-size:16px;}
.case-card .case-img{font-size:20px;padding:20px;}
.btn-phone{font-size:12px !important;padding:6px 12px !important;}
.lang-switch{display:none;}
#backToTop{width:34px;height:34px;font-size:14px;bottom:80px;right:12px;}
.online-chat .chat-btn{width:40px;height:40px;font-size:18px;}
}
@supports (padding-top:env(safe-area-inset-top)){.navbar{padding-top:env(safe-area-inset-top);}
}
@media (max-width:768px){.container{padding:0 20px;}
.section{padding:48px 0;}
.navbar{padding:0 20px;height:auto;padding:12px 20px;flex-wrap:wrap;}
.navbar .nav-links{display:none;}
.navbar .nav-links.open{display:flex !important;flex-direction:column;position:absolute;top:60px;left:0;right:0;background:white;padding:12px 24px;box-shadow:0 8px 24px rgba(0,0,0,0.12);z-index:100;border-top:1px solid #eef2f6;border-radius:0 0 12px 12px;}
.navbar .nav-links.open li{width:100%;border-bottom:1px solid #f0f0f0;}
.navbar .nav-links.open li:last-child{border-bottom:none;}
.navbar .nav-links.open li a{display:block;padding:14px 0;font-size:16px;font-weight:500;}
.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
.menu-toggle.active span:nth-child(2){opacity:0;}
.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}
.navbar .btn-phone{font-size:12px;padding:5px 10px;}
.lang-switch{font-size:11px;padding:4px 8px;}
.hero{padding:40px 0 30px;}
.hero h1{font-size:26px !important;}
.hero-badge{font-size:11px !important;padding:4px 10px !important;white-space:normal;line-height:1.4;}
.hero-content p{font-size:14px !important;}
.hero-actions{flex-direction:column;gap:10px;}
.hero-actions .btn,.hero-actions button{width:100%;text-align:center;}
.stats-bar{grid-template-columns:repeat(2,1fr);gap:12px;}
.solution-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
.product-grid,.case-grid,.news-grid{grid-template-columns:1fr;gap:16px;}
.section-title{font-size:24px;}
.footer-grid{grid-template-columns:1fr;gap:8px;}
.footer-grid div{margin-bottom:16px;}
.site-footer a{display:block !important;padding:6px 0;border-bottom:1px solid rgba(255,255,255,0.06);}
.site-footer a:last-child{border-bottom:none;}
.site-footer h5{margin-top:16px;margin-bottom:12px;font-size:14px;}
.site-footer .footer-brand{font-size:18px;}
.site-footer p{font-size:13px;line-height:1.6;}
.footer-bottom{font-size:11px;}
.map-container{height:280px !important;}
.detail-page{padding-top:0;}
.detail-breadcrumb{font-size:12px;padding:12px 0;}
.detail-title{font-size:24px;}
.product-detail-summary{font-size:14px;}
.cta-banner h2{font-size:22px;}
.cta-banner .container{padding:32px 16px !important;}
.cta-banner .btn{width:100%;text-align:center;}
#backToTop{bottom:90px;right:16px;width:38px;height:38px;font-size:16px;}
.online-chat{bottom:24px;right:16px;}
.online-chat .chat-btn{width:44px;height:44px;font-size:20px;}
.search-bar{max-width:100%;margin-left:16px;margin-right:16px;}
}
@media (max-width:480px){.container{padding:0 16px;}
.section{padding:32px 0;}
.navbar .logo img{height:32px;}
.hero{padding:30px 0 20px;}
.hero h1{font-size:22px !important;}
.hero-badge{font-size:10px !important;}
.section-title{font-size:20px;}
.section-desc{font-size:13px;}
.product-card{padding:16px;}
.product-card h3{font-size:15px;}
.product-icon{width:48px;height:48px;font-size:22px;}
.stats-bar div{padding:12px;}
.stats-bar div strong{font-size:22px;}
.stats-bar div span{font-size:11px;}
.cert-grid > div{padding:12px;}
.btn{font-size:13px;padding:10px 20px;}
.btn-phone{font-size:11px !important;padding:4px 8px !important;}
.lang-switch{display:none;}
.map-container{height:220px !important;}
#backToTop{width:34px;height:34px;font-size:14px;right:10px;bottom:70px;}
.online-chat .chat-btn{width:38px;height:38px;font-size:16px;}
.cta-banner h2{font-size:18px;}
.cta-banner .container{padding:24px 16px !important;}
.site-footer{padding:30px 0 16px;}
}
@supports (padding-top:env(safe-area-inset-top)){.navbar{padding-top:env(safe-area-inset-top);}
}
@supports (padding-bottom:env(safe-area-inset-bottom)){.online-chat{bottom:calc(24px + env(safe-area-inset-bottom));}
#backToTop{bottom:calc(90px + env(safe-area-inset-bottom));}
}