/* ============ CSS Variables ============ */
:root {
  --theme-color: #377bee;
  --theme-num: 1200;
}

/* ============ Reset & Base ============ */
html,body,h1,h2,h3,h4,h5,h6,hr,p,dl,dt,dd,ul,ol,li,pre,fieldset,lengend,button,input,textarea,form,td,th{margin:0;padding:0;}
ul,ol{list-style:none;}
html{height:100%;scroll-behavior:smooth;}
body{position:relative;font-family:"Microsoft YaHei",Arial,宋体,sans-serif;background-color:#fff!important;min-height:100%;padding-bottom:300px;}
em,i{font-style:normal;}
a{text-decoration:none;color:inherit;}
a:active,a:hover{outline:none;text-decoration:none;}
input,button,textarea{outline:none;border:none;}
textarea{resize:none;}
img{vertical-align:top;border:0;max-width:100%;}
label{-moz-user-select:none;-webkit-user-select:none;-ms-user-select:none;user-select:none;}
*,*::before,*::after{box-sizing:border-box;}

/* ============ Utility Classes ============ */
.clearfix::after{content:"";display:block;clear:both;}
.f-l{float:left;}.f-r{float:right;}
.t-c{text-align:center;}.t-l{text-align:left;}.t-r{text-align:right;}
.ellipsis{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.pr{position:relative;}.pa{position:absolute;}
.flex{display:flex;}.flex-col{display:flex;flex-direction:column;}.flex-1{flex:1;}
.row-center{justify-content:center;}.row-between{justify-content:space-between;}
.col-center{align-items:center;}
.w-100{width:100%;}.h-100{height:100%;}
.theme-width{width:1200px;margin:0 auto;min-width:1200px;}

/* ============ HEADER ============ */
#header{min-width:1200px;}
.header-box{box-shadow:0 2px 4px 0 rgba(204,204,204,.5);}
.top-box{background:#f5f5f5;border-bottom:1px solid #e8e8e8;}
.top-box .top-left dl{padding:8px 0;font-size:12px;color:#666;}
.top-box .top-right{display:flex;align-items:center;}
.top-box .top-right li{padding:8px 12px;font-size:12px;color:#666;position:relative;}
.top-box .top-right li::after{content:'';position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:#ddd;}
.top-box .top-right li:last-child::after{display:none;}
.top-box .top-right li a:hover{color:var(--theme-color);}
.head{padding:16px 0;background:#fff;}
.head .head-box{display:flex;align-items:center;justify-content:space-between;}
.head .logo{width:210px;height:66px;display:flex;align-items:center;}
.head .logo a{display:flex;align-items:center;height:100%;gap:8px;}
.head .logo .logo-icon{width:48px;height:48px;background:linear-gradient(135deg,#377bee,#6bcabd);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;font-weight:bold;flex-shrink:0;}
.head .logo .logo-text{font-size:28px;font-weight:bold;color:var(--theme-color);letter-spacing:2px;white-space:nowrap;}
.search-form{display:flex;align-items:center;width:460px;height:42px;border:2px solid var(--theme-color);border-radius:4px;overflow:hidden;}
.search-form .search-input{flex:1;height:100%;padding:0 16px;font-size:14px;color:#333;border:none;outline:none;}
.search-form .search-button{width:90px;height:100%;background:var(--theme-color);color:#fff;font-size:14px;cursor:pointer;border:none;display:flex;align-items:center;justify-content:center;gap:4px;transition:background .3s;}
.search-form .search-button:hover{background:#2b69d6;}
.nav-box{background:var(--theme-color);position:relative;z-index:100;}
.nav-box .theme-width{display:flex;align-items:center;}
.categorys-btn{display:flex;align-items:center;gap:10px;padding:0 26px;height:46px;background:rgba(0,0,0,.15);color:#fff;font-size:15px;cursor:pointer;white-space:nowrap;min-width:160px;}
.categorys-btn svg{width:16px;height:16px;}
.nav{display:flex;align-items:center;flex:1;}
.nav li a{display:block;padding:0 22px;height:46px;line-height:46px;font-size:15px;color:#fff;white-space:nowrap;transition:background .3s;}
.nav li a:hover,.nav li.nav_active a{background:rgba(0,0,0,.15);}
.categorys1{width:280px;background:#fff;border:1px solid #e9e9e9;border-top:none;box-shadow:0 4px 8px rgba(0,0,0,.1);}
.categorys1 .categorys-first{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;cursor:pointer;transition:all .2s;border-bottom:1px solid #f5f5f5;}
.categorys1 .categorys-first:hover{background:#f0f7ff;}
.categorys1 .categorys-first .categorys-title{font-size:14px;color:#333;flex:1;}
.categorys1 .categorys-first i{font-size:12px;color:#999;}
.categorys1 .categorys-content{display:none;position:absolute;left:280px;top:0;width:420px;min-height:100%;background:#fff;border:1px solid #e9e9e9;padding:16px;flex-wrap:wrap;align-content:flex-start;gap:8px;z-index:1000;box-shadow:2px 2px 8px rgba(0,0,0,.08);}
.categorys1 .categorys-content.active{display:flex;}
.categorys1 .categorys-content a{display:inline-block;padding:6px 14px;font-size:13px;color:#666;background:#f5f5f5;border-radius:4px;transition:all .2s;}
.categorys1 .categorys-content a:hover{color:#fff;background:var(--theme-color);}

/* ============ PAGE HEADER ============ */
.page-header{background:linear-gradient(135deg,#377bee,#6bcabd);color:#fff;padding:40px 0;text-align:center;margin-bottom:30px;}
.page-header h1{font-size:32px;margin-bottom:8px;}
.page-header p{font-size:14px;opacity:.85;}

/* ============ BREADCRUMB ============ */
.breadcrumb{padding:12px 0;font-size:13px;color:#999;margin-bottom:16px;}
.breadcrumb a{color:#666;transition:color .3s;}
.breadcrumb a:hover{color:var(--theme-color);}
.breadcrumb span{color:#333;}

/* ============ FORM STYLES ============ */
.form-container{width:480px;margin:40px auto;padding:40px;background:#fff;border-radius:8px;box-shadow:0 4px 24px rgba(0,0,0,.08);}
.form-container h2{text-align:center;font-size:24px;color:#333;margin-bottom:30px;}
.form-group{margin-bottom:20px;}
.form-group label{display:block;font-size:14px;color:#666;margin-bottom:8px;}
.form-group input,.form-group select{width:100%;height:44px;padding:0 14px;border:1px solid #ddd;border-radius:4px;font-size:14px;color:#333;transition:border .3s;}
.form-group input:focus,.form-group select:focus{border-color:var(--theme-color);}
.form-group input.error{border-color:#ff4444;}
.btn-primary{width:100%;height:44px;background:var(--theme-color);color:#fff;font-size:16px;border:none;border-radius:4px;cursor:pointer;transition:background .3s;}
.btn-primary:hover{background:#2b69d6;}
.form-footer{text-align:center;margin-top:16px;font-size:13px;color:#999;}
.form-footer a{color:var(--theme-color);}

/* ============ TABLE STYLES ============ */
.data-table{width:100%;border-collapse:collapse;background:#fff;}
.data-table th{background:#f5f5f5;padding:14px 16px;text-align:left;font-size:14px;color:#333;font-weight:bold;border-bottom:1px solid #e9e9e9;}
.data-table td{padding:14px 16px;font-size:14px;color:#666;border-bottom:1px solid #f0f0f0;}
.data-table tr:hover td{background:#fafafa;}

/* ============ CARD GRID ============ */
.goods-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;}
.goods-card{background:#fff;border-radius:4px;overflow:hidden;transition:all .3s;cursor:pointer;border:1px solid #f0f0f0;}
.goods-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1);transform:translateY(-4px);}
.goods-card .card-img{width:100%;height:200px;overflow:hidden;position:relative;}
.goods-card .card-img img{width:100%;height:100%;object-fit:cover;transition:all .5s ease-out;}
.goods-card:hover .card-img img{transform:rotate(5deg) scale(1.1);}
.goods-card .card-img .tag{position:absolute;top:10px;left:10px;padding:4px 10px;border-radius:4px;font-size:11px;color:#fff;}
.goods-card .card-img .tag.hot{background:linear-gradient(135deg,#ff6e6b,#ff9d00);}
.goods-card .card-img .tag.new{background:linear-gradient(135deg,#6bcabd,var(--theme-color));}
.goods-card .card-body{padding:12px 16px;}
.goods-card .card-body .goods-name{font-size:14px;color:#333;height:40px;line-height:20px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:8px;}
.goods-card .card-body .goods-price{font-size:18px;color:#ff4444;font-weight:bold;}

/* ============ PAGINATION ============ */
.pagination{display:flex;justify-content:center;gap:8px;margin:40px 0;}
.pagination a{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid #ddd;border-radius:4px;font-size:14px;color:#666;transition:all .3s;}
.pagination a.active,.pagination a:hover{background:var(--theme-color);color:#fff;border-color:var(--theme-color);}

/* ============ FOOTER ============ */
#footer{position:absolute;bottom:0;left:0;width:100%;min-width:1200px;}
.footer{border-top:1px solid #dcdcdc;font-size:14px;color:#999;background-color:#fafafa!important;}
.foot-box .foot{display:flex;flex-direction:column;padding-top:30px;text-align:center;}
.foot-box .foot .article{display:flex;justify-content:center;padding:16px 0;}
.foot-box .foot .article dl{padding:0 30px;}
.foot-box .foot .article .title{text-align:left;font-size:16px;color:#333;font-weight:bold;margin-bottom:12px;}
.foot-box .foot .article .children{display:flex;flex-direction:column;gap:8px;margin-top:10px;}
.foot-box .foot .article .children a{font-size:14px;color:#999;transition:color .3s;}
.foot-box .foot .article .children a:hover{color:var(--theme-color);}
.foot-box .foot .info{display:flex;justify-content:center;margin-top:36px;font-size:14px;color:#666;gap:16px;}
.foot-box .foot .copyright{margin-top:22px;font-size:14px;color:#666;}
.foot-box .foot .copyright p{display:flex;justify-content:center;flex-direction:column;align-items:center;}
.foot-box .foot .copyright p+p{margin-top:10px;}
.copyright-wrap{width:1200px;margin:0 auto;padding:16px 0;color:#666;background:#fff;text-align:center;}
.certificate{text-align:center;line-height:30px;font-size:13px;color:#999;}
.certificate a{color:#999;}
.certificate a:hover{color:var(--theme-color);}

/* ============ BACK TO TOP ============ */
.back-to-top{position:fixed;right:40px;bottom:80px;width:44px;height:44px;background:var(--theme-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;z-index:998;opacity:0;visibility:hidden;transition:all .3s;box-shadow:0 4px 12px rgba(55,123,238,.4);}
.back-to-top.show{opacity:1;visibility:visible;}
.back-to-top:hover{transform:translateY(-4px);}

/* ============ EMPTY STATE ============ */
.empty-state{text-align:center;padding:60px 0;color:#999;}
.empty-state i{font-size:64px;margin-bottom:16px;display:block;}
.empty-state p{font-size:16px;margin-bottom:20px;}
.empty-state .btn{display:inline-block;padding:10px 30px;background:var(--theme-color);color:#fff;border-radius:4px;font-size:14px;transition:background .3s;}
.empty-state .btn:hover{background:#2b69d6;}

/* ============ DETAIL PAGE ============ */
.detail-container{display:flex;gap:40px;margin:30px 0;}
.detail-left{width:480px;flex-shrink:0;}
.detail-left .main-img{width:480px;height:480px;border-radius:8px;overflow:hidden;border:1px solid #f0f0f0;}
.detail-left .main-img img{width:100%;height:100%;object-fit:cover;}
.detail-left .thumb-list{display:flex;gap:10px;margin-top:12px;}
.detail-left .thumb-list li{width:80px;height:80px;border-radius:4px;overflow:hidden;border:2px solid transparent;cursor:pointer;transition:all .3s;}
.detail-left .thumb-list li.active,.detail-left .thumb-list li:hover{border-color:var(--theme-color);}
.detail-left .thumb-list li img{width:100%;height:100%;object-fit:cover;}
.detail-right{flex:1;}
.detail-right h1{font-size:22px;color:#333;line-height:1.4;margin-bottom:16px;}
.detail-right .price-box{background:#fff5f5;padding:20px;border-radius:8px;margin-bottom:20px;}
.detail-right .price-box .price{font-size:28px;color:#ff4444;font-weight:bold;}
.detail-right .price-box .original{font-size:14px;color:#999;text-decoration:line-through;margin-left:12px;}
.detail-right .info-item{display:flex;padding:10px 0;font-size:14px;color:#666;border-bottom:1px dashed #f0f0f0;}
.detail-right .info-item .label{width:80px;color:#999;}
.detail-right .btn-buy{display:inline-block;padding:14px 40px;background:linear-gradient(90deg,#ff6e6b,#ff4444);color:#fff;font-size:16px;border-radius:4px;cursor:pointer;margin-top:20px;margin-right:12px;transition:opacity .3s;}
.detail-right .btn-buy:hover{opacity:.9;}
.detail-right .btn-cart{display:inline-block;padding:14px 40px;background:var(--theme-color);color:#fff;font-size:16px;border-radius:4px;cursor:pointer;margin-top:20px;transition:background .3s;}
.detail-right .btn-cart:hover{background:#2b69d6;}