/* ==========================================
   领先工业 - B2B办公综合采购服务网站
   全局样式
   ========================================== */

/* Reset & Base */
*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --primary:#1a56db;--primary-dark:#0f2b5b;--primary-light:#3b82f6;
  --accent:#f59e0b;--accent-hover:#d97706;
  --success:#10b981;--danger:#ef4444;--info:#0ea5e9;
  --bg:#ffffff;--bg-light:#f8fafc;--bg-section:#f1f5f9;
  --text:#1e293b;--text-secondary:#64748b;--text-light:#94a3b8;
  --border:#e2e8f0;--border-light:#f1f5f9;
  --shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.06);
  --shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);
  --shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);
  --radius:8px;--radius-lg:12px;--radius-xl:16px;
  --max-width:1280px;--header-height:72px;
}
html{scroll-behavior:smooth;}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;}
a{color:var(--primary);text-decoration:none;transition:color .2s;}
a:hover{color:var(--primary-light);}
img{max-width:100%;display:block;}
ul,ol{list-style:none;}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--bg);border-bottom:1px solid var(--border);height:var(--header-height);transition:box-shadow .3s;}
.header.scrolled{box-shadow:var(--shadow-md);}
.header-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:100%;padding:0 24px;}
.logo{display:flex;align-items:center;gap:10px;cursor:pointer;font-weight:700;font-size:20px;color:var(--primary-dark);white-space:nowrap;}
.logo-icon{width:42px;height:42px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:800;}
.logo-text span{color:var(--primary);}
.nav{display:flex;align-items:center;gap:2px;}
.nav-item{padding:8px 14px;font-size:15px;color:var(--text);border-radius:6px;cursor:pointer;transition:all .2s;white-space:nowrap;}
.nav-item:hover,.nav-item.active{color:var(--primary);background:#eff6ff;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn-login{padding:8px 20px;border:1px solid var(--primary);color:var(--primary);border-radius:6px;font-size:14px;cursor:pointer;transition:all .2s;background:transparent;}
.btn-login:hover{background:var(--primary);color:#fff;}
.btn-register{padding:8px 20px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-size:14px;cursor:pointer;transition:all .2s;}
.btn-register:hover{background:var(--primary-dark);}
.mobile-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--text);padding:4px;}

/* ===== Main ===== */
.main-content{margin-top:var(--header-height);min-height:calc(100vh - var(--header-height));}

/* ===== Banner ===== */
.banner{position:relative;overflow:hidden;height:520px;}
.banner-slides{display:flex;transition:transform .6s ease;height:100%;}
.banner-slide{min-width:100%;height:100%;display:flex;align-items:center;justify-content:center;position:relative;padding:0 40px;background-size:cover;background-position:center;background-repeat:no-repeat;}
.banner-slide::before{content:'';position:absolute;inset:0;background:rgba(0,0,0,.3);}
.banner-content{position:relative;z-index:2;text-align:center;color:#fff;max-width:800px;}
.banner-content h1{font-size:42px;font-weight:800;margin-bottom:16px;line-height:1.2;letter-spacing:-.02em;}
.banner-content p{font-size:18px;opacity:.9;margin-bottom:32px;line-height:1.6;}
.banner-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
.banner-btn{padding:14px 32px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;border:none;}
.banner-btn-primary{background:var(--accent);color:#fff;}
.banner-btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);}
.banner-btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6);}
.banner-btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1);}
.banner-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3;}
.banner-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:all .3s;}
.banner-dot.active{background:#fff;width:28px;border-radius:5px;}
.banner-arrows{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:100%;display:flex;justify-content:space-between;padding:0 16px;pointer-events:none;}
.banner-arrow{width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.15);border:none;color:#fff;font-size:20px;cursor:pointer;transition:all .3s;pointer-events:auto;display:flex;align-items:center;justify-content:center;}
.banner-arrow:hover{background:rgba(255,255,255,.3);}
.banner-decoration{position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none;}
.banner-circle{position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.08);}
.banner-circle:nth-child(1){width:400px;height:400px;top:-100px;right:-80px;}
.banner-circle:nth-child(2){width:300px;height:300px;bottom:-80px;left:-60px;}
.banner-circle:nth-child(3){width:200px;height:200px;top:50%;left:10%;}

/* ===== Section ===== */
.section{padding:80px 24px;}
.section-inner{max-width:var(--max-width);margin:0 auto;}
.section-header{text-align:center;margin-bottom:56px;}
.section-header h2{font-size:32px;font-weight:700;color:var(--text);margin-bottom:12px;}
.section-header p{font-size:16px;color:var(--text-secondary);max-width:600px;margin:0 auto;}
.section-header .line{width:48px;height:4px;background:var(--primary);border-radius:2px;margin:16px auto 0;}

/* ===== Feature Cards ===== */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;cursor:pointer;transition:all .3s;position:relative;overflow:hidden;}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--primary);transform:scaleX(0);transition:transform .3s;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.feature-card:hover::before{transform:scaleX(1);}
.feature-icon{width:64px;height:64px;border-radius:16px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff;}
.feature-icon.blue{background:linear-gradient(135deg,#3b82f6,#1d4ed8);}
.feature-icon.green{background:linear-gradient(135deg,#10b981,#059669);}
.feature-icon.orange{background:linear-gradient(135deg,#f59e0b,#d97706);}
.feature-icon.purple{background:linear-gradient(135deg,#8b5cf6,#7c3aed);}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.6;}

/* ===== Advantage ===== */
.advantage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.advantage-card{display:flex;gap:20px;padding:28px;background:var(--bg);border-radius:var(--radius-lg);border:1px solid var(--border);transition:all .3s;}
.advantage-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary-light);}
.advantage-num{font-size:40px;font-weight:800;color:var(--primary);line-height:1;opacity:.2;min-width:50px;}
.advantage-info h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.advantage-info p{font-size:14px;color:var(--text-secondary);line-height:1.6;}

/* ===== Brand Wall ===== */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;}
.brand-item{width:140px;height:60px;border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-secondary);background:var(--bg);transition:all .3s;}
.brand-item:hover{border-color:var(--primary);color:var(--primary);}
.brand-wall-section{margin-top:40px;padding-top:40px;border-top:1px dashed var(--border);}

/* ===== One-stop Procurement ===== */
.one-stop-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px;}
.one-stop-card{display:flex;gap:16px;padding:24px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .3s;}
.one-stop-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary-light);}
.one-stop-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#eff6ff,#dbeafe);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary);flex-shrink:0;}
.one-stop-content h3{font-size:16px;font-weight:600;margin-bottom:4px;}
.one-stop-content p{font-size:13px;color:var(--text-secondary);line-height:1.5;}
.one-stop-highlight{display:flex;justify-content:center;gap:32px;padding:24px;background:linear-gradient(135deg,rgba(26,86,219,.05),rgba(59,130,246,.1));border-radius:var(--radius-lg);}
.highlight-item{display:flex;flex-direction:column;align-items:center;gap:8px;}
.highlight-icon{width:44px;height:44px;border-radius:50%;background:var(--bg);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--primary);}
.highlight-item span{font-size:13px;color:var(--text-secondary);}

/* ===== Info Plaza ===== */
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.info-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;cursor:pointer;transition:all .3s;}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-light);}
.info-icon{width:56px;height:56px;border-radius:14px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;}
.info-icon.blue{background:linear-gradient(135deg,#3b82f6,#1d4ed8);}
.info-icon.green{background:linear-gradient(135deg,#10b981,#059669);}
.info-icon.orange{background:linear-gradient(135deg,#f59e0b,#d97706);}
.info-icon.purple{background:linear-gradient(135deg,#8b5cf6,#7c3aed);}
.info-card h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.info-card p{font-size:13px;color:var(--text-secondary);line-height:1.5;}

/* ===== Gov Cases ===== */
.gov-cases{margin-top:40px;padding-top:40px;border-top:1px dashed var(--border);}
.gov-cases h3{font-size:20px;font-weight:600;margin-bottom:24px;text-align:center;}
.gov-cases .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.gov-cases .case-card{display:flex;gap:16px;padding:24px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .3s;}
.gov-cases .case-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary-light);}
.gov-cases .case-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(26,86,219,.1),rgba(59,130,246,.2));display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary);flex-shrink:0;}
.gov-cases .case-info h4{font-size:16px;font-weight:600;margin-bottom:6px;}
.gov-cases .case-info p{font-size:13px;color:var(--text-secondary);line-height:1.6;}

/* ===== Smart Office (Home) ===== */
.home .smart-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.home .smart-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;cursor:pointer;transition:all .3s;}
.home .smart-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-light);}
.home .smart-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#eff6ff,#dbeafe);margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary);}
.home .smart-card:hover .smart-icon{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;}
.home .smart-card h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.home .smart-card p{font-size:13px;color:var(--text-secondary);line-height:1.5;}

/* ===== Gov Special ===== */
.gov-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.gov-card{text-align:center;padding:36px 24px;background:var(--bg);border-radius:var(--radius-lg);border:1px solid var(--border);transition:all .3s;}
.gov-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);}
.gov-card-icon{font-size:48px;margin-bottom:16px;}

/* ===== Smart Office ===== */
.smart-hero{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:80px 24px 60px;color:#fff;text-align:center;}
.smart-hero h1{font-size:36px;font-weight:700;margin-bottom:12px;}
.smart-hero p{font-size:16px;opacity:.85;}
.smart-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.smart-card{position:relative;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-xl);padding:40px 24px;text-align:center;cursor:pointer;transition:all .4s;overflow:hidden;}
.smart-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,86,219,.05),rgba(59,130,246,.1));opacity:0;transition:opacity .4s;}
.smart-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:var(--primary-light);}
.smart-card:hover::before{opacity:1;}
.smart-card-icon{position:relative;z-index:1;width:72px;height:72px;border-radius:20px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;font-size:32px;background:linear-gradient(135deg,#eff6ff,#dbeafe);transition:all .4s;}
.smart-card:hover .smart-card-icon{background:linear-gradient(135deg,var(--primary),var(--primary-light));transform:scale(1.1);}
.smart-card:hover .smart-card-icon svg{color:#fff;}
.smart-card-icon svg{color:var(--primary);transition:color .4s;}
.smart-card h3{position:relative;z-index:1;font-size:17px;font-weight:600;margin-bottom:8px;}
.smart-card p{position:relative;z-index:1;font-size:13px;color:var(--text-secondary);line-height:1.6;}
.smart-card-arrow{position:relative;z-index:1;margin-top:16px;color:var(--primary);font-size:14px;opacity:0;transition:all .3s;display:inline-flex;align-items:center;gap:4px;}
.smart-card:hover .smart-card-arrow{opacity:1;}

/* Smart Detail Modal */
.smart-detail-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:2000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s;}
.smart-detail-overlay.active{opacity:1;visibility:visible;}
.smart-detail{background:var(--bg);border-radius:var(--radius-xl);max-width:720px;width:90%;max-height:80vh;overflow-y:auto;padding:40px;position:relative;transform:translateY(20px);transition:transform .3s;}
.smart-detail-overlay.active .smart-detail{transform:translateY(0);}
.smart-detail-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border:none;background:var(--bg-section);border-radius:50%;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;}
.smart-detail h2{font-size:24px;font-weight:700;margin-bottom:16px;color:var(--primary-dark);}
.smart-detail p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:12px;}
.smart-detail ul{padding-left:20px;margin-bottom:12px;}
.smart-detail li{font-size:14px;color:var(--text-secondary);line-height:2;}

/* ===== Mall ===== */
.mall-layout{display:flex;gap:24px;}
.mall-sidebar{width:240px;flex-shrink:0;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 0;height:fit-content;position:sticky;top:calc(var(--header-height) + 16px);}
.mall-sidebar-title{padding:8px 20px;font-size:15px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border);margin-bottom:8px;}
.mall-category{padding:10px 20px;font-size:14px;color:var(--text-secondary);cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:8px;}
.mall-category:hover,.mall-category.active{color:var(--primary);background:#eff6ff;}
.mall-category.active{font-weight:600;border-right:3px solid var(--primary);}
.mall-sub-categories{padding:4px 20px 4px 44px;}
.mall-sub-cat{padding:6px 0;font-size:13px;color:var(--text-light);cursor:pointer;transition:color .2s;}
.mall-sub-cat:hover,.mall-sub-cat.active{color:var(--primary);}
.mall-main{flex:1;}
.mall-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:16px;flex-wrap:wrap;}
.mall-search{display:flex;flex:1;max-width:480px;border:1px solid var(--border);border-radius:8px;overflow:hidden;}
.mall-search input{flex:1;border:none;outline:none;padding:10px 16px;font-size:14px;}
.mall-search button{padding:10px 20px;background:var(--primary);color:#fff;border:none;cursor:pointer;font-size:14px;}
.mall-sort{display:flex;gap:8px;}
.mall-sort-btn{padding:8px 16px;border:1px solid var(--border);border-radius:6px;background:var(--bg);cursor:pointer;font-size:13px;transition:all .2s;}
.mall-sort-btn.active,.mall-sort-btn:hover{border-color:var(--primary);color:var(--primary);}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.product-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;transition:all .3s;}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.product-img{height:180px;background:var(--bg-section);display:flex;align-items:center;justify-content:center;font-size:48px;color:var(--text-light);position:relative;overflow:hidden;}
.product-badge{position:absolute;top:8px;left:8px;background:var(--danger);color:#fff;font-size:11px;padding:2px 8px;border-radius:4px;}
.product-info{padding:16px;}
.product-name{font-size:14px;font-weight:500;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.product-meta{display:flex;align-items:baseline;gap:8px;margin-bottom:8px;}
.product-price{font-size:20px;font-weight:700;color:var(--danger);}
.product-price span{font-size:13px;}
.product-original{font-size:13px;color:var(--text-light);text-decoration:line-through;}
.product-tags{display:flex;gap:6px;flex-wrap:wrap;}
.product-tag{font-size:11px;padding:2px 6px;border-radius:3px;background:#fff7ed;color:#ea580c;}
.product-actions{display:flex;gap:8px;margin-top:12px;}
.product-actions button{flex:1;padding:8px;border-radius:6px;font-size:13px;cursor:pointer;transition:all .2s;border:none;}
.btn-add-cart{background:#eff6ff;color:var(--primary);}
.btn-add-cart:hover{background:#dbeafe;}
.btn-buy-now{background:var(--primary);color:#fff;}
.btn-buy-now:hover{background:var(--primary-dark);}

/* Cart Sidebar */
.cart-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:2000;opacity:0;visibility:hidden;transition:all .3s;}
.cart-overlay.open{opacity:1;visibility:visible;}
.cart-panel{position:fixed;top:0;right:-420px;width:400px;max-width:90vw;height:100%;background:var(--bg);z-index:2001;transition:right .3s;box-shadow:var(--shadow-xl);display:flex;flex-direction:column;}
.cart-panel.open{right:0;}
.cart-header{padding:20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;}
.cart-header h3{font-size:18px;font-weight:600;}
.cart-close{width:32px;height:32px;border:none;background:var(--bg-section);border-radius:50%;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;}
.cart-body{flex:1;overflow-y:auto;padding:16px 20px;}
.cart-empty{text-align:center;padding:60px 20px;color:var(--text-light);font-size:14px;}
.cart-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border-light);align-items:center;}
.cart-item-img{width:56px;height:56px;border-radius:8px;background:var(--bg-section);display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0;}
.cart-item-info{flex:1;min-width:0;}
.cart-item-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.cart-item-price{font-size:14px;font-weight:700;color:var(--danger);margin-top:4px;}
.cart-item-qty{display:flex;align-items:center;gap:8px;margin-top:6px;}
.cart-qty-btn{width:24px;height:24px;border:1px solid var(--border);border-radius:4px;background:var(--bg);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:14px;}
.cart-qty-num{font-size:14px;min-width:24px;text-align:center;}
.cart-item-del{color:var(--text-light);cursor:pointer;font-size:13px;flex-shrink:0;}
.cart-item-del:hover{color:var(--danger);}
.cart-footer{padding:20px;border-top:1px solid var(--border);background:var(--bg-light);}
.cart-total{display:flex;justify-content:space-between;margin-bottom:16px;font-size:16px;font-weight:600;}
.cart-total .price{color:var(--danger);font-size:20px;}
.cart-submit{width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;}
.cart-submit:hover{background:var(--primary-dark);}
.cart-badge{position:absolute;top:-6px;right:-6px;background:var(--danger);color:#fff;font-size:10px;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;}

/* Product Detail Modal */
.pd-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:2000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s;}
.pd-overlay.active{opacity:1;visibility:visible;}
.pd-modal{background:var(--bg);border-radius:var(--radius-xl);max-width:860px;width:92%;max-height:85vh;overflow-y:auto;padding:0;position:relative;transform:translateY(20px);transition:transform .3s;}
.pd-overlay.active .pd-modal{transform:translateY(0);}
.pd-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border:none;background:var(--bg-section);border-radius:50%;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:1;}
.pd-body{display:flex;gap:32px;padding:40px;}
.pd-img{width:360px;height:300px;border-radius:var(--radius-lg);background:var(--bg-section);display:flex;align-items:center;justify-content:center;font-size:80px;color:var(--text-light);flex-shrink:0;}
.pd-info{flex:1;}
.pd-info h2{font-size:22px;font-weight:600;margin-bottom:12px;line-height:1.4;}
.pd-info .price-row{display:flex;align-items:baseline;gap:12px;margin-bottom:16px;}
.pd-info .pd-price{font-size:28px;font-weight:700;color:var(--danger);}
.pd-info .pd-original{font-size:16px;color:var(--text-light);text-decoration:line-through;}
.pd-specs{margin:16px 0;padding:16px;background:var(--bg-section);border-radius:8px;}
.pd-specs dt{font-size:13px;color:var(--text-secondary);float:left;clear:left;width:80px;margin-bottom:6px;}
.pd-specs dd{font-size:13px;margin-bottom:6px;margin-left:80px;}
.pd-qty-row{display:flex;align-items:center;gap:16px;margin:20px 0;}
.pd-qty-label{font-size:14px;color:var(--text-secondary);}
.pd-qty{display:flex;align-items:center;border:1px solid var(--border);border-radius:6px;overflow:hidden;}
.pd-qty button{width:36px;height:36px;border:none;background:var(--bg-section);cursor:pointer;font-size:16px;}
.pd-qty input{width:60px;height:36px;border:none;text-align:center;font-size:15px;outline:none;}
.pd-actions{display:flex;gap:12px;margin-top:20px;}
.pd-actions button{padding:12px 28px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:all .2s;}

/* ===== Info ===== */
.info-tabs{display:flex;gap:4px;margin-bottom:32px;border-bottom:2px solid var(--border);}
.info-tab{padding:12px 24px;font-size:15px;color:var(--text-secondary);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s;}
.info-tab:hover{color:var(--primary);}
.info-tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600;}
.info-list{display:flex;flex-direction:column;gap:16px;}
.info-item{display:flex;gap:20px;padding:24px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:all .3s;}
.info-item:hover{box-shadow:var(--shadow-md);border-color:var(--primary-light);}
.info-item-img{width:200px;height:140px;border-radius:8px;overflow:hidden;background:var(--bg-section);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:36px;color:var(--text-light);}
.info-item-content{flex:1;}
.info-item-content h3{font-size:16px;font-weight:600;margin-bottom:8px;line-height:1.4;transition:color .2s;}
.info-item:hover h3{color:var(--primary);}
.info-item-content p{font-size:14px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.info-item-meta{display:flex;gap:16px;margin-top:12px;font-size:13px;color:var(--text-light);}
.info-item-tag{padding:2px 8px;background:#eff6ff;color:var(--primary);border-radius:4px;font-size:12px;}

/* ===== Gov Page ===== */
.gov-hero{background:linear-gradient(135deg,var(--primary-dark) 0%,#1e3a5f 100%);padding:80px 24px 60px;color:#fff;text-align:center;}
.gov-hero h1{font-size:36px;font-weight:700;margin-bottom:12px;}
.gov-hero p{font-size:16px;opacity:.85;}
.gov-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:60px;}
.gov-stat{text-align:center;padding:32px 20px;background:var(--bg);border-radius:var(--radius-lg);border:1px solid var(--border);}
.gov-stat-num{font-size:36px;font-weight:800;color:var(--primary);margin-bottom:4px;}
.gov-stat-label{font-size:14px;color:var(--text-secondary);}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:60px;}
.case-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;}
.case-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);}
.case-card-img{height:180px;background:var(--bg-section);display:flex;align-items:center;justify-content:center;font-size:48px;color:var(--text-light);position:relative;}
.case-card-badge{position:absolute;top:12px;left:12px;padding:4px 12px;background:var(--primary);color:#fff;border-radius:4px;font-size:12px;}
.case-card-body{padding:20px;}
.case-card-body h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.case-card-body p{font-size:13px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.case-card-tags{display:flex;gap:6px;margin-top:12px;}
.case-card-tag{font-size:11px;padding:2px 8px;background:#f0fdf4;color:#16a34a;border-radius:4px;}
.gov-services{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:60px;}
.gov-service{display:flex;gap:20px;padding:28px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .3s;}
.gov-service:hover{box-shadow:var(--shadow-md);border-color:var(--primary-light);}
.gov-service-icon{width:56px;height:56px;border-radius:14px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;}
.gov-service h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.gov-service p{font-size:13px;color:var(--text-secondary);line-height:1.6;}
.gov-service .btn-row{margin-top:12px;display:flex;gap:8px;}
.gov-service .btn-sm{padding:6px 16px;border-radius:6px;font-size:12px;cursor:pointer;border:none;transition:all .2s;}
.btn-sm-primary{background:var(--primary);color:#fff;}
.btn-sm-primary:hover{background:var(--primary-dark);}
.btn-sm-outline{background:var(--bg);color:var(--primary);border:1px solid var(--primary);}
.btn-sm-outline:hover{background:#eff6ff;}

/* ===== Recommend Products (Gov Page) ===== */
.recommend-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:60px;}
.recommend-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;text-align:center;transition:all .3s;cursor:pointer;}
.recommend-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.recommend-card .rc-icon{font-size:40px;margin-bottom:8px;}
.recommend-card h4{font-size:14px;font-weight:500;margin-bottom:6px;line-height:1.3;}
.recommend-card .rc-price{font-size:18px;font-weight:700;color:var(--danger);margin-bottom:4px;}
.recommend-card .rc-moq{font-size:12px;color:var(--text-light);margin-bottom:4px;}
.recommend-card .rc-cycle{font-size:12px;color:var(--text-light);margin-bottom:10px;}
.recommend-card .rc-btn{display:inline-block;padding:6px 16px;background:var(--primary);color:#fff;border-radius:6px;font-size:12px;cursor:pointer;border:none;}
.recommend-card .rc-btn:hover{background:var(--primary-dark);}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto;}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;cursor:pointer;font-size:15px;font-weight:500;background:var(--bg);transition:background .2s;}
.faq-question:hover{background:var(--bg-section);}
.faq-arrow{transition:transform .3s;font-size:12px;}
.faq-item.open .faq-arrow{transform:rotate(180deg);}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s;}
.faq-item.open .faq-answer{padding:0 20px 16px;max-height:300px;}
.faq-answer p{font-size:14px;color:var(--text-secondary);line-height:1.8;}

/* ===== Forms ===== */
.form-group{margin-bottom:20px;}
.form-label{display:block;font-size:14px;font-weight:500;margin-bottom:6px;color:var(--text);}
.form-label .required{color:var(--danger);margin-left:2px;}
.form-input,.form-select,.form-textarea{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:14px;outline:none;transition:border-color .2s;background:var(--bg);font-family:inherit;}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,86,219,.1);}
.form-textarea{min-height:100px;resize:vertical;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-submit{width:100%;padding:14px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:background .2s;}
.form-submit:hover{background:var(--primary-dark);}
.demand-form{max-width:680px;margin:0 auto;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-xl);padding:40px;}

/* ===== Auth ===== */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - var(--header-height));padding:40px 24px;background:var(--bg-light);}
.auth-container{max-width:520px;width:100%;}
.auth-tabs{display:flex;margin-bottom:32px;background:var(--bg);border-radius:10px;padding:4px;border:1px solid var(--border);}
.auth-tab{flex:1;padding:12px;text-align:center;cursor:pointer;border-radius:8px;font-size:15px;font-weight:500;transition:all .2s;color:var(--text-secondary);border:none;background:none;}
.auth-tab.active{background:var(--primary);color:#fff;}
.auth-form{background:var(--bg);border-radius:var(--radius-xl);padding:40px;border:1px solid var(--border);}
.auth-title{font-size:24px;font-weight:700;text-align:center;margin-bottom:32px;}
.captcha-row{display:flex;gap:12px;}
.captcha-row .form-input{flex:1;}
.captcha-img{width:120px;height:42px;border-radius:8px;background:var(--bg-section);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:18px;letter-spacing:4px;font-weight:700;color:var(--primary-dark);user-select:none;font-style:italic;}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.contact-info-card{display:flex;gap:16px;padding:20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:16px;transition:all .3s;}
.contact-info-card:hover{box-shadow:var(--shadow-md);}
.contact-icon{width:48px;height:48px;border-radius:12px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-light));}
.contact-info-card h4{font-size:14px;font-weight:600;margin-bottom:4px;}
.contact-info-card p{font-size:13px;color:var(--text-secondary);}
.contact-map{height:300px;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-section);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--text-light);margin-top:16px;}
.help-item{padding:12px 0;border-bottom:1px solid var(--border-light);cursor:pointer;}
.help-q{display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:500;}
.help-a{display:none;margin-top:8px;font-size:13px;color:var(--text-secondary);line-height:1.6;}
.help-item.open .help-a{display:block;}
.help-arrow{color:var(--text-light);font-size:12px;transition:transform .3s;}
.help-item.open .help-arrow{transform:rotate(180deg);}

/* ===== CS Widget ===== */
.cs-widget{position:fixed;bottom:24px;right:24px;z-index:1500;}
.cs-btn{width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;font-size:24px;box-shadow:var(--shadow-lg);transition:all .3s;display:flex;align-items:center;justify-content:center;}
.cs-btn:hover{transform:scale(1.1);box-shadow:var(--shadow-xl);}
.cs-panel{position:absolute;bottom:72px;right:0;width:340px;background:var(--bg);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);border:1px solid var(--border);overflow:hidden;max-height:0;opacity:0;transition:all .3s;}
.cs-panel.open{max-height:480px;opacity:1;}
.cs-header{background:var(--primary);color:#fff;padding:16px 20px;}
.cs-header h4{font-size:15px;font-weight:600;}
.cs-header p{font-size:12px;opacity:.8;}
.cs-body{padding:20px;height:280px;overflow-y:auto;}
.cs-msg{margin-bottom:12px;}
.cs-msg-bot{background:#f1f5f9;padding:10px 14px;border-radius:12px;font-size:13px;line-height:1.5;max-width:85%;}
.cs-msg-user{background:var(--primary);color:#fff;padding:10px 14px;border-radius:12px;font-size:13px;line-height:1.5;max-width:85%;margin-left:auto;}
.cs-input-row{display:flex;border-top:1px solid var(--border);}
.cs-input-row input{flex:1;border:none;outline:none;padding:12px 16px;font-size:13px;}
.cs-input-row button{padding:12px 16px;background:var(--primary);color:#fff;border:none;cursor:pointer;}

/* ===== Footer ===== */
.footer{background:var(--primary-dark);color:rgba(255,255,255,.8);padding:60px 24px 24px;}
.footer-inner{max-width:var(--max-width);margin:0 auto;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-brand h3{font-size:18px;color:#fff;margin-bottom:12px;}
.footer-brand p{font-size:13px;line-height:1.8;opacity:.7;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col a{display:block;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:10px;transition:color .2s;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;align-items:center;justify-content:space-between;font-size:13px;opacity:.6;}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:16px 0;font-size:14px;color:var(--text-secondary);}
.breadcrumb a{color:var(--text-secondary);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span{margin:0 8px;}

/* ===== Page Header ===== */
.page-header{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:48px 24px;color:#fff;text-align:center;}
.page-header h1{font-size:30px;font-weight:700;margin-bottom:8px;}
.page-header p{font-size:15px;opacity:.8;}

/* ===== Pagination ===== */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px;}
.page-btn{min-width:36px;height:36px;border:1px solid var(--border);border-radius:6px;background:var(--bg);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:14px;transition:all .2s;}
.page-btn:hover,.page-btn.active{border-color:var(--primary);color:var(--primary);}
.page-btn.active{background:var(--primary);color:#fff;}

/* ===== Toast ===== */
.toast{position:fixed;top:90px;right:24px;z-index:3000;padding:14px 24px;background:var(--bg);border-radius:8px;box-shadow:var(--shadow-xl);border-left:4px solid var(--success);font-size:14px;transform:translateX(120%);transition:transform .3s;}
.toast.show{transform:translateX(0);}
.toast.error{border-left-color:var(--danger);}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px);}to{opacity:1;transform:translateY(0);}}
.animate-in{animation:fadeInUp .5s ease forwards;}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .smart-grid{grid-template-columns:repeat(2,1fr);}
  .product-grid{grid-template-columns:repeat(3,1fr);}
  .recommend-grid{grid-template-columns:repeat(2,1fr);}
  .gov-stats{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .pd-body{flex-direction:column;}.pd-img{width:100%;height:240px;}
}
@media(max-width:1024px){
  .one-stop-grid{grid-template-columns:repeat(2,1fr);}
  .info-grid{grid-template-columns:repeat(2,1fr);}
  .home .smart-grid{grid-template-columns:repeat(2,1fr);}
  .gov-cases .case-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:768px){
  :root{--header-height:60px;}
  .nav{display:none;flex-direction:column;position:absolute;top:var(--header-height);left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);padding:8px;box-shadow:var(--shadow-md);}
  .nav.mobile-open{display:flex;}
  .mobile-toggle{display:block;}
  .nav-actions .btn-login,.nav-actions .btn-register{display:none;}
  .banner{height:360px;}.banner-content h1{font-size:26px;}.banner-content p{font-size:14px;}.banner-btn{padding:10px 20px;font-size:14px;}
  .section{padding:48px 16px;}.section-header h2{font-size:24px;}
  .feature-grid,.advantage-grid,.smart-grid,.gov-services,.case-grid{grid-template-columns:1fr;}
  .mall-layout{flex-direction:column;}.mall-sidebar{width:100%;position:static;}
  .product-grid{grid-template-columns:repeat(2,1fr);}
  .recommend-grid{grid-template-columns:1fr 1fr;}
  .info-item{flex-direction:column;}.info-item-img{width:100%;height:160px;}
  .gov-stats{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center;}
  .gov-card-grid{grid-template-columns:1fr;}
  .one-stop-grid,.info-grid,.home .smart-grid,.gov-cases .case-grid{grid-template-columns:1fr;}
  .one-stop-highlight{flex-wrap:wrap;gap:16px;}
}
@media(max-width:480px){
  .product-grid,.recommend-grid{grid-template-columns:1fr;}
  .gov-stats{grid-template-columns:1fr;}
  .auth-form{padding:24px;}
}