/* 智信商铺 前台样式 - 小米商城风格 */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#ff6700;--primary-dark:#f25807;--primary-light:#fff5f0;
  --text:#333333;--text-sec:#666666;--text-light:#999999;--bg:#f5f5f5;--border:#e5e5e5;
  --price:#ff6700;--orange:#ff6700;--green:#52c41a;
  --header-h:120px;--container:1200px;
}
html,body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);font-size:14px;line-height:1.5}
a{text-decoration:none;color:inherit;transition:color .2s}
a:hover{color:var(--primary)}
img{max-width:100%;display:block}
ul{list-style:none}
input,button,select,textarea{font-family:inherit;font-size:inherit;outline:none;border:none;background:none}
button{cursor:pointer}
.container{max-width:var(--container);margin:0 auto;padding:0 15px}

/* ===== Top Toolbar (小米风格顶部工具条) ===== */
.top-toolbar{background:#f5f5f5;height:30px;line-height:30px;font-size:12px;color:var(--text-sec);border-bottom:1px solid #eee}
.top-toolbar .container{display:flex;justify-content:space-between;align-items:center}
.top-toolbar .toolbar-left{color:var(--text-light)}
.top-toolbar .toolbar-right{display:flex;align-items:center;gap:0}
.top-toolbar .toolbar-right a{padding:0 10px;color:var(--text-sec);font-size:12px;position:relative}
.top-toolbar .toolbar-right a:hover{color:var(--primary)}
.top-toolbar .toolbar-right a + a::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:#ddd}

/* ===== Header ===== */
.site-header{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.04);position:sticky;top:0;z-index:100}
.header-bar{display:flex;align-items:center;height:70px;gap:30px}
.logo{display:flex;align-items:center;flex-shrink:0}
.logo img{height:42px}
.logo-text{font-size:24px;font-weight:bold;color:var(--primary);letter-spacing:1px}
.search-box{flex:1;max-width:560px;display:flex;border:2px solid var(--primary);border-radius:2px;overflow:hidden}
.search-input{flex:1;padding:8px 14px;font-size:14px;border:none;background:#fff}
.search-btn{padding:0 28px;background:var(--primary);color:#fff;font-size:14px;font-weight:500}
.search-btn:hover{background:var(--primary-dark)}
.header-nav{display:flex;align-items:center;gap:18px;font-size:13px;color:var(--text-sec)}
.header-nav a{color:var(--text-sec)}
.header-nav a:hover{color:var(--primary)}
.nav-cart{position:relative;padding:6px 14px;border:1px solid var(--border);border-radius:2px;background:#fff}
.nav-cart:hover{color:var(--primary);border-color:var(--primary)}
.cart-badge{position:absolute;top:-6px;right:-6px;background:var(--primary);color:#fff;font-size:11px;min-width:18px;height:18px;border-radius:9px;text-align:center;line-height:18px;padding:0 4px}
.hamburger{display:none;width:36px;height:36px;align-items:center;justify-content:center;font-size:22px;color:var(--text);cursor:pointer}

/* ===== Category Nav ===== */
.category-nav{background:#fff;border-top:1px solid var(--border)}
.category-nav .container{display:flex;gap:28px;height:44px;line-height:44px;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}
.category-nav .container::-webkit-scrollbar{display:none}
.category-nav a{font-size:14px;color:var(--text);transition:color .2s}
.category-nav a.active,.category-nav a:hover{color:var(--primary)}

/* ===== Main ===== */
.site-main{min-height:calc(100vh - 320px);padding:20px 0}

/* ===== Banner with Category Sidebar ===== */
.banner-wrap{display:flex;gap:0;margin-bottom:20px;border-radius:4px;overflow:hidden}
.banner{position:relative;flex:1;overflow:hidden}
.banner .swiper{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;height:340px}
.banner .swiper::-webkit-scrollbar{display:none}
.banner .slide{flex:0 0 100%;scroll-snap-align:start;position:relative}
.banner .slide img{width:100%;height:340px;object-fit:cover}
.banner .dots{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:6px;z-index:2}
.banner .dots span{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.6);cursor:pointer;transition:all .2s}
.banner .dots span.active{background:var(--primary);width:22px;border-radius:4px}

/* 轮播左侧分类侧栏 */
.banner-cats{width:234px;background:rgba(0,0,0,.55);flex-shrink:0;position:relative;z-index:2}
.banner-cats ul{padding:8px 0}
.banner-cats li a{display:flex;justify-content:space-between;align-items:center;padding:0 20px;height:38px;line-height:38px;color:#fff;font-size:13px;transition:background .2s}
.banner-cats li a:hover{background:var(--primary)}
.banner-cats li a .arrow{opacity:.6;font-size:12px}
.banner-cats li a:hover .arrow{opacity:1}

/* ===== Section ===== */
.section{margin-bottom:30px}
.category-section{margin-bottom:24px}
.category-grid{display:flex;overflow-x:auto;gap:12px;padding:12px 0;-webkit-overflow-scrolling:touch}
.category-grid::-webkit-scrollbar{height:4px}
.category-grid::-webkit-scrollbar-thumb{background:#ddd;border-radius:2px}
.category-item{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;gap:8px;text-decoration:none;color:var(--text)}
.category-item img{width:56px;height:56px;object-fit:cover;border-radius:12px;border:1px solid var(--border)}
.category-item .cat-icon{font-size:28px;line-height:56px;width:56px;height:56px;text-align:center;background:#f5f5f5;border-radius:12px}
.category-item .cat-name{font-size:13px;white-space:nowrap}

/* 小米风格区块标题：简洁文字 + 右侧"更多"，无粗边框 */
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.section-head h3{font-size:22px;font-weight:normal;color:var(--text);letter-spacing:1px}
.section-head .more{font-size:13px;color:var(--text-light)}
.section-head .more:hover{color:var(--primary)}

/* ===== Product Grid ===== */
.product-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.product-card{background:#fff;border-radius:4px;overflow:hidden;transition:all .2s;cursor:pointer;border:1px solid transparent;display:flex;flex-direction:column}
.product-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.12);transform:translateY(-4px);border-color:#eee}
.product-card .img{position:relative;padding-top:100%;overflow:hidden;background:#f7f7f7}
.product-card .img img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .3s}
.product-card:hover .img img{transform:scale(1.05)}
.product-card .info{padding:12px 14px;flex:1;display:flex;flex-direction:column}
.product-card .name{font-size:14px;line-height:1.45;height:40px;overflow:hidden;color:var(--text);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.product-card .subtitle{font-size:12px;color:var(--text-light);line-height:1.3;height:16px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;margin-bottom:8px}
.product-card .price-row{display:flex;align-items:baseline;gap:8px;margin-top:auto}
.product-card .price{font-size:18px;color:var(--price);font-weight:bold}
.product-card .price::before{content:'¥';font-size:12px;font-weight:normal}
.product-card .origin{font-size:12px;color:var(--text-light);text-decoration:line-through}
.product-card .sales{font-size:11px;color:var(--text-light);margin-top:4px}
.product-card .tags{position:absolute;top:8px;left:8px;display:flex;flex-direction:column;gap:3px}
.product-card .tag{font-size:10px;padding:1px 5px;border-radius:2px;color:#fff}
.tag-hot{background:var(--primary)}
.tag-new{background:var(--green)}
.tag-rec{background:#1890ff}

/* ===== Buttons ===== */
.btn{display:inline-block;padding:8px 20px;background:var(--primary);color:#fff;border-radius:2px;font-size:14px;border:none;cursor:pointer;transition:all .2s;text-align:center}
.btn:hover{background:var(--primary-dark);color:#fff}
.btn-block{display:block;width:100%}
.btn-lg{padding:12px 32px;font-size:16px}
.btn-sm{padding:4px 12px;font-size:12px}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-gray{background:#bbb;color:#fff}
.btn-gray:hover{background:#999;color:#fff}
.btn-disabled{background:#ccc;color:#fff;cursor:not-allowed}

/* ===== Filter Bar (小米风格) ===== */
.filter-bar{background:#fff;padding:16px 20px;margin-bottom:16px;border-radius:4px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.filter-bar .sort{display:flex;align-items:center;gap:4px}
.filter-bar .sort a{padding:6px 16px;border:1px solid var(--border);border-radius:2px;margin-right:0;font-size:13px;color:var(--text-sec);transition:all .2s}
.filter-bar .sort a.active{color:var(--primary);border-color:var(--primary);background:var(--primary-light)}
.filter-bar .filters{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin-left:auto}
.filter-bar .filter-item{display:flex;align-items:center;gap:6px;font-size:13px}
.filter-bar select,.filter-bar input{padding:6px 12px;border:1px solid var(--border);border-radius:2px;font-size:13px;background:#fff}
.filter-bar .count{color:var(--text-light);font-size:13px}

/* ===== Pagination ===== */
.pagination{margin:24px 0;text-align:center}
.pagination ul{display:inline-flex;gap:4px}
.pagination li a,.pagination li span{display:block;padding:7px 13px;border:1px solid var(--border);color:var(--text-sec);font-size:13px;border-radius:2px}
.pagination li a:hover,.pagination li.active a{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== Product Detail ===== */
.detail-wrap{display:flex;gap:24px;background:#fff;padding:20px;border-radius:4px}
.detail-gallery{flex:0 0 420px}
.detail-gallery .main-img{width:420px;height:420px;border:1px solid var(--border);overflow:hidden}
.detail-gallery .main-img img{width:100%;height:100%;object-fit:cover}
.detail-gallery .thumbs{display:flex;gap:8px;margin-top:12px;overflow-x:auto}
.detail-gallery .thumbs img{width:60px;height:60px;border:2px solid transparent;cursor:pointer;object-fit:cover}
.detail-gallery .thumbs img.active{border-color:var(--primary)}
.detail-gallery .main-media{width:420px;height:420px;border:1px solid var(--border);overflow:hidden;background:#000}
.detail-gallery .main-media video{width:100%;height:100%;object-fit:contain}
.detail-gallery .thumbs .thumb-video-wrap{position:relative;width:60px;height:60px;border:2px solid transparent;cursor:pointer;overflow:hidden}
.detail-gallery .thumbs .thumb-video-wrap.active{border-color:var(--primary)}
.detail-gallery .thumbs .thumb-video-wrap img{width:100%;height:100%;object-fit:cover}
.detail-gallery .thumbs .thumb-video-wrap .play-badge{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-size:16px;text-shadow:0 0 4px rgba(0,0,0,0.6);pointer-events:none}
.detail-info .spec-group{margin-bottom:12px}
.detail-info .spec-group .sku-options{display:flex;flex-wrap:wrap;gap:8px}
.detail-info{flex:1;min-width:0}
.detail-info h1{font-size:22px;font-weight:normal;line-height:1.4;margin-bottom:8px;color:var(--text)}
.detail-info .subtitle{color:var(--text-light);font-size:14px;margin-bottom:14px}
.detail-info .price-box{background:var(--primary-light);padding:18px 20px;border-radius:4px;margin-bottom:18px}
.detail-info .price-box .price{color:var(--price);font-size:30px;font-weight:bold}
.detail-info .price-box .price::before{content:'¥';font-size:16px;font-weight:normal}
.detail-info .price-box .origin{color:var(--text-light);text-decoration:line-through;margin-left:12px;font-size:14px}
.detail-info .meta{display:flex;flex-wrap:wrap;gap:20px;padding:12px 0;border-bottom:1px dashed var(--border);font-size:13px;color:var(--text-sec)}
.detail-info .meta .label{color:var(--text-light)}
.detail-info .sku-list{padding:14px 0;border-bottom:1px dashed var(--border)}
.detail-info .sku-list .sku-label{color:var(--text-light);margin-bottom:10px;font-size:13px}
.detail-info .sku-list .sku-options{display:flex;flex-wrap:wrap;gap:8px}
.detail-info .sku-list .sku-opt{padding:8px 18px;border:1px solid var(--border);border-radius:2px;cursor:pointer;font-size:13px;transition:all .2s}
.detail-info .sku-list .sku-opt.active{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.detail-info .sku-list .sku-opt:hover{border-color:var(--primary)}
.detail-info .qty-row{display:flex;align-items:center;gap:14px;padding:14px 0}
.detail-info .qty-row .label{color:var(--text-light);font-size:13px}
.detail-info .qty-control{display:flex;align-items:center;border:1px solid var(--border)}
.detail-info .qty-control button{width:34px;height:34px;font-size:16px;background:#f7f7f7}
.detail-info .qty-control button:hover{background:var(--primary-light);color:var(--primary)}
.detail-info .qty-control input{width:54px;height:34px;text-align:center;border-left:1px solid var(--border);border-right:1px solid var(--border);font-size:14px}
.detail-info .actions{display:flex;gap:12px;margin-top:24px;padding-top:18px}
.detail-info .actions .btn{flex:1;padding:14px;font-size:16px}
.detail-info .actions .btn-cart{background:var(--orange)}
.detail-info .actions .btn-cart:hover{background:var(--primary-dark)}
.detail-info .actions .btn-buy{background:var(--primary)}
.detail-info .share-bar{margin-top:16px;padding-top:14px;border-top:1px dashed var(--border);display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-light)}
.detail-info .share-bar .share-btn{padding:6px 14px;background:#07c160;color:#fff;border-radius:2px;font-size:13px}

/* ===== Detail Content ===== */
.detail-content{background:#fff;padding:20px;margin-top:20px;border-radius:4px}
.detail-content .tab-head{display:flex;border-bottom:1px solid var(--border);margin-bottom:20px}
.detail-content .tab-head .tab{padding:12px 28px;cursor:pointer;font-size:15px;border-bottom:2px solid transparent;color:var(--text-sec);transition:all .2s}
.detail-content .tab-head .tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:500}
.detail-content .tab-body img{max-width:100%;height:auto;margin:10px 0}
.detail-content .tab-body p{margin:10px 0;line-height:1.8}
.detail-content .tab-body table{width:100%;border-collapse:collapse;margin:10px 0}
.detail-content .tab-body table td,.detail-content .tab-body table th{border:1px solid var(--border);padding:10px 14px;font-size:13px}
.detail-content .tab-body table th{background:#fafafa;text-align:left;font-weight:normal;color:var(--text-light)}

/* ===== Cart ===== */
.cart-table{width:100%;background:#fff;border-radius:4px;overflow:hidden}
.cart-table th{background:#f7f7f7;padding:12px;font-size:13px;color:var(--text-sec);font-weight:normal;text-align:left}
.cart-table td{padding:14px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
.cart-table .product-cell{display:flex;align-items:center;gap:10px}
.cart-table .product-cell img{width:60px;height:60px;object-fit:cover;border:1px solid var(--border)}
.cart-table .product-cell .name{font-size:13px}
.cart-table .product-cell .sku{font-size:12px;color:var(--text-light);margin-top:2px}
.cart-table .qty{display:inline-flex;align-items:center;border:1px solid var(--border)}
.cart-table .qty button{width:28px;height:28px;background:#f7f7f7}
.cart-table .qty input{width:46px;height:28px;text-align:center;border-left:1px solid var(--border);border-right:1px solid var(--border)}
.cart-table .price{color:var(--price);font-weight:bold}
.cart-footer{background:#fff;padding:16px 20px;margin-top:14px;border-radius:4px;display:flex;align-items:center;justify-content:space-between}
.cart-footer .left{display:flex;align-items:center;gap:18px;font-size:13px;color:var(--text-sec)}
.cart-footer .right{display:flex;align-items:center;gap:16px}
.cart-footer .total{font-size:14px;color:var(--text-sec)}
.cart-footer .total .amount{color:var(--price);font-size:24px;font-weight:bold}

/* ===== Checkout ===== */
.checkout-section{background:#fff;padding:20px;border-radius:4px;margin-bottom:16px}
.checkout-section h3{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.address-list{display:flex;flex-wrap:wrap;gap:12px}
.address-item{flex:0 0 calc(33.33% - 8px);border:1px solid var(--border);padding:14px;border-radius:4px;cursor:pointer;position:relative}
.address-item.active{border-color:var(--primary);background:var(--primary-light)}
.address-item .name{font-weight:600;margin-bottom:4px}
.address-item .addr{font-size:13px;color:var(--text-sec);line-height:1.5}
.address-item .phone{font-size:13px;color:var(--text-sec);margin-top:4px}
.address-item .tag{position:absolute;top:8px;right:8px;font-size:11px;color:var(--primary);background:#fff;padding:1px 6px;border:1px solid var(--primary)}
.address-add{flex:0 0 calc(33.33% - 8px);border:1px dashed var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-light);cursor:pointer;min-height:90px}
.address-add:hover{color:var(--primary);border-color:var(--primary)}

/* ===== Order List ===== */
.order-card{background:#fff;border-radius:4px;margin-bottom:14px;overflow:hidden}
.order-card .head{display:flex;justify-content:space-between;padding:12px 16px;background:#f7f7f7;font-size:13px;color:var(--text-sec)}
.order-card .head .status{font-weight:bold;color:var(--primary)}
.order-card .body{padding:14px 16px}
.order-card .item{display:flex;gap:10px;align-items:center;padding:6px 0}
.order-card .item img{width:60px;height:60px;object-fit:cover;border:1px solid var(--border)}
.order-card .item .info{flex:1}
.order-card .item .info .name{font-size:13px;margin-bottom:2px}
.order-card .item .info .sku{font-size:12px;color:var(--text-light)}
.order-card .item .qty{font-size:13px;color:var(--text-light)}
.order-card .foot{padding:12px 16px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.order-card .foot .total{font-size:13px;color:var(--text-sec)}
.order-card .foot .total .amount{color:var(--price);font-size:16px;font-weight:bold}
.order-card .foot .actions{display:flex;gap:8px}
.status-badge{display:inline-block;padding:2px 8px;border-radius:2px;font-size:12px}
.status-0{background:#fff7e6;color:#fa8c16}
.status-1{background:#fff2f0;color:#ff4d4f}
.status-2{background:#e6f7ff;color:#1890ff}
.status-3{background:#f6ffed;color:#52c41a}
.status-4{background:#f5f5f5;color:#999}
.status-5{background:#fff2f0;color:#ff4d4f}
.status-6{background:#f5f5f5;color:#999}

/* ===== Pay Page ===== */
.pay-page{max-width:600px;margin:30px auto;background:#fff;border-radius:4px;padding:30px}
.pay-page .pay-amount{text-align:center;margin:24px 0}
.pay-page .pay-amount .label{font-size:14px;color:var(--text-sec)}
.pay-page .pay-amount .amount{font-size:36px;color:var(--price);font-weight:bold;margin-top:6px}
.pay-page .pay-amount .amount::before{content:'¥';font-size:18px;font-weight:normal}
.pay-methods{margin:24px 0}
.pay-methods .method{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid var(--border);border-radius:4px;margin-bottom:10px;cursor:pointer;transition:all .2s}
.pay-methods .method:hover{border-color:var(--primary)}
.pay-methods .method.active{border-color:var(--primary);background:var(--primary-light)}
.pay-methods .method .icon{font-size:30px}
.pay-methods .method .name{flex:1;font-size:15px}
.pay-methods .method .check{width:18px;height:18px;border:1px solid var(--border);border-radius:50%}
.pay-methods .method.active .check{background:var(--primary);border-color:var(--primary);position:relative}
.pay-methods .method.active .check::after{content:'✓';color:#fff;font-size:12px;position:absolute;top:-1px;left:3px}
.pay-qrcode{text-align:center;padding:20px}
.pay-qrcode img{width:220px;height:220px;margin:0 auto;border:1px solid var(--border);padding:10px}
.pay-qrcode .hint{font-size:13px;color:var(--text-sec);margin-top:12px}

/* ===== User Center ===== */
.user-layout{display:flex;gap:20px}
.user-sidebar{flex:0 0 200px;background:#fff;border-radius:4px;padding:14px 0}
.user-sidebar .user-card{padding:20px;text-align:center;border-bottom:1px solid var(--border)}
.user-sidebar .user-card img{width:60px;height:60px;border-radius:50%;margin:0 auto 8px}
.user-sidebar .user-card .name{font-size:15px;font-weight:600}
.user-sidebar .menu a{display:block;padding:11px 20px;font-size:14px;color:var(--text-sec);border-left:3px solid transparent}
.user-sidebar .menu a:hover,.user-sidebar .menu a.active{color:var(--primary);background:var(--primary-light);border-left-color:var(--primary)}
.user-main{flex:1;min-width:0}
.user-main .card{background:#fff;border-radius:4px;padding:20px;margin-bottom:16px}
.user-main .card h3{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border)}

/* Order counts grid */
.order-counts{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:16px}
.order-counts .item{background:#fff;border-radius:4px;padding:20px 10px;text-align:center;transition:all .2s}
.order-counts .item:hover{box-shadow:0 2px 10px rgba(0,0,0,.08);transform:translateY(-2px)}
.order-counts .item .icon{font-size:28px;margin-bottom:6px}
.order-counts .item .num{font-size:20px;font-weight:bold;color:var(--text)}
.order-counts .item .label{font-size:12px;color:var(--text-light);margin-top:2px}

/* Form */
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-size:13px;color:var(--text-sec)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:2px;font-size:14px}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}
.form-group textarea{min-height:80px;resize:vertical}
.form-row{display:flex;gap:14px}
.form-row .form-group{flex:1}

/* Modal */
.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:1000}
.modal-overlay.show{display:flex}
.modal{background:#fff;border-radius:4px;width:540px;max-width:92%;max-height:90vh;overflow-y:auto}
.modal-head{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;font-size:16px;font-weight:600}
.modal-head .close{font-size:22px;color:var(--text-light);cursor:pointer;line-height:1}
.modal-body{padding:20px}
.modal-foot{padding:12px 20px;border-top:1px solid var(--border);text-align:right}

/* Toast */
.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.8);color:#fff;padding:10px 20px;border-radius:4px;font-size:14px;z-index:2000;display:none}
.toast.show{display:block}

/* Footer (小米风格深灰底) */
.site-footer{background:#2b2b2b;color:#fff;padding:40px 0 20px;margin-top:40px}
.footer-cols{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px;margin-bottom:24px}
.footer-col{flex:1;min-width:160px}
.footer-col h4{font-size:14px;margin-bottom:14px;color:#fff;font-weight:500}
.footer-col a,.footer-col p{display:block;font-size:13px;color:#999;line-height:1.9}
.footer-col a:hover{color:var(--primary)}
.footer-copyright{text-align:center;padding-top:20px;border-top:1px solid #3a3a3a;font-size:12px;color:#777}

/* Back to top */
.back-top{position:fixed;bottom:70px;right:30px;width:44px;height:44px;background:rgba(0,0,0,.5);color:#fff;border-radius:4px;text-align:center;line-height:44px;font-size:20px;cursor:pointer;display:none;z-index:99}
.back-top.show{display:block}

/* ===== Empty page (login/register/pay) ===== */
.empty-page{background:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 100%);min-height:100vh;padding:30px 0}

.auth-box{max-width:400px;margin:40px auto;background:#fff;border-radius:6px;padding:40px 30px;box-shadow:0 8px 30px rgba(0,0,0,.1)}
.auth-box .logo{text-align:center;font-size:24px;font-weight:bold;color:var(--primary);margin-bottom:8px}
.auth-box .subtitle{text-align:center;color:var(--text-light);margin-bottom:28px;font-size:13px}
.auth-box .form-group{margin-bottom:18px}
.auth-box .btn{width:100%;padding:11px;font-size:15px}
.auth-box .links{display:flex;justify-content:space-between;margin-top:18px;font-size:13px}

/* Empty state */
.empty-state{text-align:center;padding:60px 20px;color:var(--text-light)}
.empty-state .icon{font-size:64px;margin-bottom:14px;color:#ddd}
.empty-state .text{font-size:14px}
.empty-state .btn{margin-top:18px;display:inline-block}

/* 404 */
.page-404{text-align:center;padding:80px 20px}
.page-404 .code{font-size:96px;color:var(--primary);font-weight:bold}
.page-404 .msg{font-size:18px;color:var(--text-sec);margin:14px 0 24px}

/* ===== Mobile Bottom Nav ===== */
.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:54px;background:#fff;border-top:1px solid var(--border);z-index:999;justify-content:space-around;align-items:center}
.mobile-bottom-nav a{display:flex;flex-direction:column;align-items:center;gap:2px;color:var(--text-light);font-size:11px;flex:1;text-decoration:none}
.mobile-bottom-nav a .icon{font-size:20px;line-height:1}
.mobile-bottom-nav a.active,.mobile-bottom-nav a:hover{color:var(--primary)}

/* ===== Mobile Drawer ===== */
.mobile-drawer{display:none;position:fixed;top:0;left:0;width:260px;max-width:80%;height:100vh;background:#fff;z-index:1001;transform:translateX(-100%);transition:transform .3s;overflow-y:auto;box-shadow:2px 0 12px rgba(0,0,0,.15)}
.mobile-drawer.show{transform:translateX(0)}
.mobile-drawer .drawer-head{padding:16px;background:var(--primary);color:#fff;font-size:16px;font-weight:500;display:flex;justify-content:space-between;align-items:center}
.mobile-drawer .drawer-head .close{font-size:22px;cursor:pointer;line-height:1}
.mobile-drawer .drawer-body{padding:10px 0}
.mobile-drawer .drawer-body a{display:block;padding:12px 20px;font-size:14px;color:var(--text);border-bottom:1px solid #f5f5f5}
.mobile-drawer .drawer-body a:hover{color:var(--primary);background:var(--primary-light)}
.mobile-drawer-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:1000}
.mobile-drawer-overlay.show{display:block}

/* ===== Article Page ===== */
.article-page{background:#fff;padding:30px;border-radius:4px}
.article-page h1{font-size:22px;font-weight:normal;margin-bottom:8px;color:var(--text)}
.article-page .article-meta{color:var(--text-light);font-size:12px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.article-page .article-content{line-height:1.9;color:var(--text);font-size:14px}
.article-page .article-content p{margin:12px 0}
.article-page .article-content img{max-width:100%;height:auto;margin:14px 0;border-radius:4px}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .product-grid{grid-template-columns:repeat(4,1fr)}
  .detail-wrap{flex-wrap:wrap}
  .detail-gallery{flex:0 0 100%}
  .detail-gallery .main-img{width:100%;height:auto;aspect-ratio:1/1}
}
@media (max-width:768px){
  :root{--header-h:60px}
  .container{padding:0 10px}
  /* 隐藏顶部工具条 */
  .top-toolbar{display:none}
  .header-bar{height:56px;gap:10px}
  .logo{flex:0 0 auto}
  .logo-text{font-size:18px}
  .search-box{flex:1;max-width:none}
  .search-input{padding:7px 10px;font-size:13px}
  .search-btn{padding:0 14px;font-size:13px}
  .header-nav{display:none}
  .hamburger{display:flex}
  .category-nav .container{gap:18px;font-size:13px;height:40px;line-height:40px}
  /* 轮播图：隐藏左侧分类侧栏 */
  .banner-cats{display:none}
  .banner .swiper,.banner .slide img{height:180px}
  .product-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .product-card .info{padding:10px}
  .product-card .name{font-size:13px;height:36px}
  .section-head h3{font-size:18px}
  .filter-bar{padding:10px;gap:10px}
  .filter-bar .sort{flex-wrap:wrap;gap:6px}
  .filter-bar .sort a{padding:5px 10px;font-size:12px}
  .filter-bar .filters{margin-left:0;width:100%}
  .cart-table th:nth-child(2),.cart-table td:nth-child(2){display:none}
  .user-layout{flex-direction:column}
  .user-sidebar{flex:1}
  .user-sidebar .menu{display:flex;flex-wrap:wrap;gap:4px;padding:10px}
  .user-sidebar .menu a{flex:1;min-width:80px;padding:8px;text-align:center;border-left:none;border-bottom:2px solid transparent}
  .order-counts{grid-template-columns:repeat(3,1fr)}
  .address-list .address-item,.address-add{flex:0 0 100%}
  .pay-page{margin:14px;padding:20px}
  .footer-cols{flex-direction:column;gap:16px}
  /* 显示移动端底部导航 */
  .mobile-bottom-nav{display:flex}
  .site-main{padding-bottom:70px}
  .back-top{bottom:70px}
}
@media (max-width:480px){
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .detail-info h1{font-size:18px}
  .detail-info .price-box .price{font-size:24px}
  .order-counts{grid-template-columns:repeat(2,1fr)}
}