/* ============================================================
 * 南充创新智能科技 IT 设备商城 — 前台样式
 * 科技蓝色板（CORE_SPEC 第9节）+ 暗色致敬 body.grief + 响应式
 * ============================================================ */

:root{
  --primary:#1668FF;
  --primary-dark:#0A5CFF;
  --primary-deep:#0B4FD8;
  --primary-light:#E8F0FF;
  --primary-lighter:#F5F8FF;
  --nav-bg:#0B1F3A;
  --nav-text:#FFFFFF;
  --bg:#FFFFFF;
  --bg-gray:#F5F8FF;
  --gradient:linear-gradient(135deg,#1668FF 0%,#4D9FFF 100%);
  --text:#1F2937;
  --text-2:#64748B;
  --border:#E2E8F0;
  --success:#10B981;
  --warning:#F59E0B;
  --danger:#EF4444;
  --radius:8px;
  --shadow:0 2px 12px rgba(11,31,58,.08);
  --shadow-hover:0 6px 20px rgba(22,104,255,.18);
  --maxw:1320px;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
  font-size:15px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-deep)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{cursor:pointer;font-family:inherit}
input,select,textarea{font-family:inherit;font-size:15px;outline:none}

.container{max-width:min(1920px,calc(100% - 40px));margin:0 auto;padding:0 16px}

/* ============ 顶部导航 ============ */
.site-header{background:var(--nav-bg);color:var(--nav-text);position:sticky;top:0;z-index:1000;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.header-top{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:19px;white-space:nowrap;flex-shrink:0;min-width:0}
.logo .logo-mark{width:40px;height:40px;border-radius:8px;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.logo .logo-text{overflow:visible}
.logo .logo-text small{display:block;font-size:12px;font-weight:400;opacity:.7}
.logo .logo-img{height:42px;width:auto;max-width:180px;object-fit:contain;display:block;vertical-align:middle}

.main-nav{display:flex;align-items:center;gap:4px;flex:1;overflow-x:auto}
.main-nav a{color:#dbe4f3;padding:9px 14px;border-radius:6px;white-space:nowrap;font-size:15px}
.main-nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.main-nav a.active{background:var(--primary);color:#fff}

.header-right{display:flex;align-items:center;gap:12px;white-space:nowrap}
.header-right .user-area{display:flex;align-items:center;gap:8px;color:#dbe4f3;font-size:14px}
.header-right .user-area a{color:#dbe4f3}
.header-right .user-area a:hover{color:#fff}
.cart-link{position:relative;color:#fff}
.cart-link .cart-count{position:absolute;top:-6px;right:-10px;background:var(--danger);color:#fff;border-radius:10px;font-size:11px;padding:1px 6px;min-width:18px;text-align:center}

/* 查询下拉 */
.query-dropdown{position:relative}
.query-dropdown > .qd-toggle{position:absolute;opacity:0;pointer-events:none;width:0;height:0}
.query-dropdown > .qd-label{display:inline-block;color:#dbe4f3;padding:8px 12px;border-radius:6px;cursor:pointer}
.query-dropdown > .qd-label:hover{background:rgba(255,255,255,.1);color:#fff}
.query-dropdown .drop{position:absolute;top:56px;right:0;background:#fff;color:var(--text);min-width:160px;border-radius:8px;box-shadow:var(--shadow-hover);display:none;overflow:hidden}
.query-dropdown:hover .drop{display:block}
.query-dropdown > .qd-toggle:checked ~ .drop{display:block}
.query-dropdown .drop a{display:block;padding:10px 16px;color:var(--text);border-bottom:1px solid var(--border)}
.query-dropdown .drop a:last-child{border-bottom:0}
.query-dropdown .drop a:hover{background:var(--primary-lighter);color:var(--primary)}

/* 汉堡按钮（手机） */
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:22px;padding:6px}

/* ============ 面包屑 ============ */
.breadcrumb{padding:12px 0;font-size:13px;color:var(--text-2)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{margin:0 6px;color:#cbd5e1}

/* ============ 区块标题 ============ */
.section{padding:40px 0}
.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.section-title h2{font-size:22px;font-weight:700;position:relative;padding-left:12px}
.section-title h2::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;background:var(--gradient);border-radius:2px}
.section-title .more{font-size:14px;color:var(--text-2)}

/* ============ 首页轮播 ============ */
.banner-wrap{position:relative;overflow:hidden;border-radius:var(--radius);box-shadow:var(--shadow)}
.banner{display:flex;transition:transform .6s ease}
.banner .slide{min-width:100%;position:relative;background:#0b1f3a;aspect-ratio:16/7;max-height:420px}
.banner .slide img{width:100%;height:100%;object-fit:cover}
.banner .slide .caption{position:absolute;left:32px;bottom:32px;color:#fff;z-index:2}
.banner .slide .caption h3{font-size:26px;text-shadow:0 2px 8px rgba(0,0,0,.5)}
.banner-dots{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.banner-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer}
.banner-dots span.active{background:#fff}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;background:rgba(0,0,0,.3);color:#fff;border:0;font-size:18px;z-index:3;opacity:0;transition:opacity .3s}
.banner-wrap:hover .banner-arrow{opacity:1}
.banner-arrow.prev{left:12px}
.banner-arrow.next{right:12px}

/* ============ 跑马灯公告 ============ */
.notice-marquee{margin-top:16px;background:var(--primary-lighter);border:1px solid var(--primary-light);border-radius:var(--radius);padding:10px 16px;display:flex;align-items:center;gap:12px;overflow:hidden}
.notice-marquee .notice-label{color:var(--primary);font-weight:600;white-space:nowrap;display:flex;align-items:center;gap:6px}
.notice-marquee .notice-track{flex:1;overflow:hidden;height:24px;position:relative}
.notice-marquee .notice-inner{display:flex;gap:40px;white-space:nowrap;animation:marquee 15s linear infinite;height:24px;align-items:center}
.notice-marquee .notice-inner a{color:var(--text)}
.notice-marquee .notice-inner a:hover{color:var(--primary)}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
/* 手机/窄屏：滚动更快 */
@media (max-width:768px){
  .notice-marquee .notice-inner{animation-duration:10s}
}

/* ============ 宣传片区 ============ */
.video-area{margin-top:24px;display:grid;grid-template-columns:3fr 1.2fr;gap:16px}
.video-player{background:#000;border-radius:var(--radius);overflow:hidden;position:relative}
.video-player video{width:100%;display:block;max-height:min(62vh,640px);min-height:340px;aspect-ratio:16/9;object-fit:contain}
.video-enlarge{position:absolute;top:10px;right:10px;z-index:5;background:rgba(0,0,0,.45);color:#fff;border:0;width:36px;height:36px;border-radius:8px;font-size:16px;cursor:pointer;line-height:1;display:flex;align-items:center;justify-content:center}
.video-enlarge:hover{background:rgba(0,0,0,.7)}
.video-list .video-item{background:#fff;border-radius:var(--radius);padding:12px;margin-bottom:8px;box-shadow:var(--shadow);cursor:pointer;display:flex;gap:10px;align-items:center}
.video-list .video-item:hover{box-shadow:var(--shadow-hover)}
.video-list .video-item .thumb{width:80px;height:50px;background:var(--primary-lighter);border-radius:4px;display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:20px;flex-shrink:0}
.video-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:2000;align-items:center;justify-content:center;padding:20px}
.video-modal.show{display:flex}
.video-modal .modal-inner{width:min(900px,95vw);background:#000;border-radius:8px;overflow:hidden;position:relative}
.video-modal video{width:100%;display:block;max-height:80vh}
.video-modal .modal-close{position:absolute;top:10px;right:10px;background:rgba(0,0,0,.5);color:#fff;border:0;width:36px;height:36px;border-radius:50%;font-size:18px}

/* ============ 商品卡片 ============ */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.product-card .thumb{aspect-ratio:4/3;background:var(--bg-gray);overflow:hidden;position:relative}
.product-card .thumb img{width:100%;height:100%;object-fit:cover}
.product-card .thumb .badge{position:absolute;top:8px;left:8px;background:var(--danger);color:#fff;font-size:11px;padding:2px 8px;border-radius:4px}
.product-card .thumb .badge.recommend{background:var(--warning)}
.product-card .thumb .badge.points{background:var(--success)}
.product-card .info{padding:16px;flex:1;display:flex;flex-direction:column;gap:8px}
.product-card .info .name{font-size:15px;font-weight:600;line-height:1.4;height:2.8em;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.product-card .info .name a{color:var(--text)}
.product-card .info .name a:hover{color:var(--primary)}
.product-card .info .meta{font-size:13px;color:var(--text-2)}
.product-card .info .price{display:flex;align-items:baseline;gap:8px;margin-top:auto}
.product-card .info .price .now{color:var(--danger);font-size:20px;font-weight:700}
.product-card .info .price .now::before{content:"¥";font-size:13px}
.product-card .info .price .origin{color:var(--text-2);font-size:13px;text-decoration:line-through}
.product-card .info .price .points-tag{color:var(--success);font-size:15px;font-weight:600}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:6px;border:0;font-size:15px;font-weight:500;transition:all .2s;background:#e2e8f0;color:var(--text)}
.btn:hover{opacity:.9}
.btn-primary{background:var(--gradient);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-block{display:flex;width:100%}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-lg{padding:13px 30px;font-size:17px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ============ 表单 ============ */
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-weight:500;color:var(--text)}
.form-group label .req{color:var(--danger)}
.form-control{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;background:#fff;transition:border-color .2s}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,104,255,.1)}
textarea.form-control{min-height:100px;resize:vertical}
select.form-control{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='3'><path d='M6 9l6 6 6-6'/></svg>");background-repeat:no-repeat;background-position:right 10px center;padding-right:30px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-hint{font-size:12px;color:var(--text-2);margin-top:4px}
.form-error{color:var(--danger);font-size:12px;margin-top:4px}

/* ============ 表格 ============ */
.table-wrap{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:auto}
table.data-table{width:100%;border-collapse:collapse;min-width:600px}
table.data-table th,table.data-table td{padding:12px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}
table.data-table th{background:var(--bg-gray);font-weight:600;color:var(--text)}
table.data-table tr:hover td{background:var(--primary-lighter)}
table.data-table .num{text-align:right;font-variant-numeric:tabular-nums}
table.data-table .center{text-align:center}

/* ============ 分页 ============ */
nav.paging{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;padding:20px 0}
nav.paging a,nav.paging span{display:inline-flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:0 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;color:var(--text);background:#fff}
nav.paging a:hover{border-color:var(--primary);color:var(--primary)}
nav.paging span.current{background:var(--primary);color:#fff;border-color:var(--primary)}
nav.paging span.disabled{color:#cbd5e1;cursor:not-allowed}
nav.paging span.total{border:0;background:transparent;color:var(--text-2)}

/* ============ 卡片/面板 ============ */
.panel{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px}
.panel-title{font-size:16px;font-weight:600;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.flex{display:flex;gap:12px;align-items:center}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:12px}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.text-danger{color:var(--danger)}.text-success{color:var(--success)}.text-warning{color:var(--warning)}.text-muted{color:var(--text-2)}
.text-right{text-align:right}.text-center{text-align:center}

/* ============ 标签 / 状态 ============ */
.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;background:var(--primary-light);color:var(--primary)}
.tag.success{background:#d1fae5;color:#065f46}
.tag.warning{background:#fef3c7;color:#92400e}
.tag.danger{background:#fee2e2;color:#991b1b}
.tag.muted{background:#e2e8f0;color:#475569}

/* ============ 商品详情 ============ */
.detail-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.detail-gallery .main-img{aspect-ratio:1;background:var(--bg-gray);border-radius:8px;overflow:hidden;margin-bottom:10px}
.detail-gallery .main-img img{width:100%;height:100%;object-fit:contain}
.detail-gallery .thumbs{display:flex;gap:8px}
.detail-gallery .thumbs img{width:70px;height:70px;object-fit:cover;border-radius:6px;border:2px solid transparent;cursor:pointer}
.detail-gallery .thumbs img.active{border-color:var(--primary)}
.detail-info h1{font-size:22px;font-weight:700;margin-bottom:8px}
.detail-info .sub{color:var(--text-2);margin-bottom:16px}
.detail-price-box{background:var(--primary-lighter);padding:16px;border-radius:8px;margin:16px 0}
.detail-price-box .price-row{display:flex;align-items:baseline;gap:16px;margin-bottom:6px}
.detail-price-box .price-row .label{color:var(--text-2);width:80px}
.detail-price-box .price-row .now{font-size:28px;color:var(--danger);font-weight:700}
.detail-price-box .price-row .now::before{content:"¥";font-size:16px}
.spec-list{margin:16px 0}
.spec-list li{display:flex;padding:6px 0;border-bottom:1px dashed var(--border)}
.spec-list .k{width:120px;color:var(--text-2)}
.qty-stepper{display:inline-flex;border:1px solid var(--border);border-radius:6px;overflow:hidden}
.qty-stepper button{width:36px;height:36px;background:#fff;border:0;font-size:16px}
.qty-stepper input{width:50px;height:36px;text-align:center;border:0;border-left:1px solid var(--border);border-right:1px solid var(--border)}

/* ============ 购物车 ============ */
.cart-table .thumb-cell{display:flex;align-items:center;gap:10px}
.cart-table .thumb-cell img{width:60px;height:60px;object-fit:cover;border-radius:6px;background:var(--bg-gray)}
.cart-summary{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;position:sticky;bottom:0}

/* ============ 结算 ============ */
.checkout-layout{display:grid;grid-template-columns:1fr 360px;gap:20px}
.addr-item{border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:10px;cursor:pointer;transition:all .2s}
.addr-item:hover{border-color:var(--primary)}
.addr-item.selected{border-color:var(--primary);background:var(--primary-lighter)}
.pay-method{display:flex;flex-direction:column;gap:8px}
.pay-method label{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid var(--border);border-radius:8px;cursor:pointer}
.pay-method label.selected{border-color:var(--primary);background:var(--primary-lighter)}
.period-option{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.period-option label{padding:8px 14px;border:1px solid var(--border);border-radius:6px;cursor:pointer;font-size:13px}
.period-option label.selected{border-color:var(--primary);background:var(--primary);color:#fff}

/* ============ 会员中心 ============ */
.member-layout{display:grid;grid-template-columns:220px 1fr;gap:20px}
.member-side{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;height:fit-content}
.member-side .user-info{text-align:center;padding:10px 0 16px;border-bottom:1px solid var(--border);margin-bottom:10px}
.member-side .user-info .avatar{width:64px;height:64px;border-radius:50%;background:var(--gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;margin:0 auto 8px}
.member-side nav a{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:6px;color:var(--text);font-size:14px}
.member-side nav a:hover{background:var(--primary-lighter);color:var(--primary)}
.member-side nav a.active{background:var(--primary);color:#fff}
.order-tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px;flex-wrap:wrap}
.order-tabs a{padding:10px 16px;color:var(--text-2);border-bottom:2px solid transparent}
.order-tabs a.active{color:var(--primary);border-color:var(--primary);font-weight:600}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:24px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--border)}
.timeline .t-item{position:relative;padding-bottom:20px}
.timeline .t-item::before{content:"";position:absolute;left:-22px;top:6px;width:10px;height:10px;border-radius:50%;background:var(--border)}
.timeline .t-item.done::before{background:var(--primary)}
.timeline .t-item .t-time{font-size:12px;color:var(--text-2)}
.timeline .t-item .t-content{margin-top:4px}

/* ============ 查询中心 ============ */
.query-hero{background:var(--gradient);color:#fff;padding:48px 0;text-align:center;border-radius:var(--radius);margin-bottom:24px}
.query-hero h1{font-size:28px;margin-bottom:8px}
.query-hero p{opacity:.9}
.query-form{max-width:520px;margin:0 auto;background:#fff;padding:24px;border-radius:var(--radius);box-shadow:var(--shadow)}
.query-form .input-group{display:flex;gap:8px}
.query-form .input-group input{flex:1}

/* 溯源结果 */
.trace-result{max-width:760px;margin:0 auto}
.trace-result .verify-hero{padding:20px;border-radius:8px;margin-bottom:16px;text-align:center}
.trace-result .verify-hero.ok{background:#d1fae5;color:#065f46}
.trace-result .verify-hero.bad{background:#fee2e2;color:#991b1b}
.trace-result .verify-hero .icon{font-size:40px;margin-bottom:8px}

/* ============ 自助装机 ============ */
.diy-layout{display:grid;grid-template-columns:1fr 320px;gap:20px}
.diy-component-group{margin-bottom:16px}
.diy-component-group h3{font-size:15px;margin-bottom:10px;padding:8px 12px;background:var(--bg-gray);border-radius:6px;border-left:4px solid var(--primary)}
.diy-options{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.diy-options label{border:1px solid var(--border);border-radius:6px;padding:10px;cursor:pointer;display:block;transition:all .2s}
.diy-options label:hover{border-color:var(--primary)}
.diy-options label.selected{border-color:var(--primary);background:var(--primary-lighter)}
.diy-options label .name{font-weight:600;font-size:13px}
.diy-options label .spec{font-size:12px;color:var(--text-2);margin:4px 0}
.diy-options label .price{color:var(--danger);font-weight:600;font-size:13px}
.diy-summary{position:sticky;top:84px}
.diy-summary .total{font-size:24px;color:var(--danger);font-weight:700;margin:10px 0}

/* ============ 页脚 ============ */
.site-footer{background:var(--nav-bg);color:#94a3b8;margin-top:48px;padding:40px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px;padding-bottom:32px}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-grid a{color:#94a3b8;display:block;padding:3px 0;font-size:13px}
.footer-grid a:hover{color:#fff}
.footer-grid .contact li{padding:4px 0;font-size:13px;display:flex;gap:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;text-align:center;font-size:16px;color:#fff}

/* ============ 消息提示 ============ */
.alert{padding:12px 16px;border-radius:6px;margin-bottom:16px;font-size:13px}
.alert-success{background:#d1fae5;color:#065f46}
.alert-error{background:#fee2e2;color:#991b1b}
.alert-info{background:var(--primary-light);color:var(--primary-deep)}
.alert-warning{background:#fef3c7;color:#92400e}

/* 空状态 */
.empty{text-align:center;padding:48px 0;color:var(--text-2)}
.empty .icon{font-size:48px;margin-bottom:12px;opacity:.4}

/* ============ 暗色致敬 ============ */
body.grief{filter:grayscale(1);background:#111 !important;color:#cbd5e1}
body.grief .site-header{background:#0a0a0a}
body.grief .site-footer{background:#0a0a0a;color:#6b7280}
body.grief .site-footer h4{color:#d1d5db}
body.grief .panel,
body.grief .product-card,
body.grief .query-form,
body.grief .cart-summary,
body.grief .detail-layout,
body.grief .table-wrap,
body.grief .member-side{background:#1f1f1f;color:#cbd5e1;box-shadow:0 2px 8px rgba(0,0,0,.5)}
body.grief .product-card .info .name a,
body.grief .panel-title{color:#e5e7eb}
body.grief .detail-price-box,
body.grief .notice-marquee,
body.grief .form-control,
body.grief table.data-table th{background:#2a2a2a;color:#cbd5e1}
body.grief .form-control{border-color:#3a3a3a;color:#e5e7eb}
body.grief table.data-table th{color:#9ca3af;border-color:#3a3a3a}
body.grief table.data-table td{border-color:#3a3a3a;color:#cbd5e1}
body.grief .query-hero{background:#333 !important;color:#e5e7eb}
body.grief .breadcrumb,body.grief .text-muted{color:#6b7280}
body.grief a{color:#93c5fd}
body.grief a:hover{color:#dbeafe}
body.grief .btn-outline{background:transparent;color:#93c5fd;border-color:#4b5563}
body.grief input,body.grief select,body.grief textarea{color:#e5e7eb}

/* ============ 响应式 ============ */
@media (max-width: 992px){
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .video-area{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .detail-layout{grid-template-columns:1fr}
  .checkout-layout{grid-template-columns:1fr}
  .diy-layout{grid-template-columns:1fr}
  .member-layout{grid-template-columns:1fr}
  .member-side nav{display:flex;flex-wrap:wrap;gap:4px}
}
@media (max-width: 768px){
  .main-nav{position:fixed;top:64px;left:-100%;width:100%;background:var(--nav-bg);flex-direction:column;align-items:stretch;padding:8px;transition:left .3s;gap:0}
  .main-nav.open{left:0}
  .main-nav a{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.05)}
  .query-dropdown{width:100%}
  .query-dropdown > .qd-label{display:block;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.05)}
  .query-dropdown .drop{position:static;top:auto;right:auto;width:100%;box-shadow:none}
  .menu-toggle{display:block}
  .header-right .user-area .user-name{display:none}
  .product-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .banner .slide{aspect-ratio:16/9}
  .banner .slide img{object-fit:contain;background:#0b1f3a}
  .banner .slide .caption{left:16px;bottom:16px}
  .banner .slide .caption h3{font-size:18px}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:20px 0}
  .diy-options{grid-template-columns:1fr}
  .query-hero{padding:24px 0}
  .query-hero h1{font-size:22px}
}
@media (max-width: 480px){
  .product-grid{grid-template-columns:1fr 1fr;gap:8px}
  .container{padding:0 10px}
}

/* ============ IT 服务自动轮播 ============ */
.svc-carousel{overflow:hidden}
.svc-track{display:flex;transition:transform .6s ease}
.svc-carousel .svc-slide{flex:0 0 25%;box-sizing:border-box;padding:2px}
@media(max-width:768px){
  .svc-carousel .svc-slide{flex:0 0 50%}
}

/* ============ 工程案例 4列1行自动轮播 ============ */
.case-carousel{overflow:hidden}
.case-track{display:flex;transition:transform .6s ease}
.case-carousel .case-slide{flex:0 0 25%;box-sizing:border-box;padding:0 8px}
@media(max-width:768px){
  .case-carousel .case-slide{flex:0 0 50%}
}
/* ============ 新闻资讯 两排两列向下轮播 ============ */
.news-gcarousel{height:204px;overflow:hidden}
.news-gtrack{transition:transform .6s ease}
.news-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;height:96px;box-sizing:border-box}
.news-row .news-item{height:96px;box-sizing:border-box;border-radius:10px;overflow:hidden}