:root{--navy:#0B2540;--blue:#1668DC;--blue-d:#0F4EA8;--teal:#0F9D7A;--amber:#F59E0B;--ink:#15263A;--ink2:#5A6B7D;--line:#E3EAF2;--bg:#F5F8FC;--white:#fff;--red:#D8382E}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font:14px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
button,input,select,textarea{font-family:inherit;font-size:14px}

/* ---------- 顶栏 ---------- */
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.top-in{height:68px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;font-size:15px;white-space:nowrap}
.brand .mark{width:36px;height:36px;border-radius:9px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px}
.brand b{display:block;line-height:1.2}
.brand small{display:block;color:var(--ink2);font-size:11px;line-height:1.4}
.nav{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:14px}
.nav a{color:var(--ink2);padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a.on{color:var(--blue);border-bottom-color:var(--blue)}
.nav em{font-style:normal;background:var(--red);color:#fff;border-radius:10px;padding:0 6px;font-size:11px;line-height:18px;display:inline-block;min-width:18px;text-align:center}
.phone{background:var(--blue);color:#fff;border-radius:6px;padding:7px 14px;font-size:13px;white-space:nowrap}

/* ---------- 商城头图 ---------- */
.hero-shop{background:linear-gradient(120deg,var(--navy),#124B85 60%,#1668DC);color:#fff;padding:44px 0 38px}
.hero-shop .eyebrow{font-size:11px;letter-spacing:2px;color:#9CC7F0;font-weight:700}
.hero-shop h1{font-size:32px;margin:8px 0 6px;letter-spacing:.5px}
.hero-shop p{margin:0;color:#CFE1F5;font-size:15px}
.notice{margin-top:20px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:8px;padding:9px 14px;display:inline-block;font-size:13px;color:#EAF4FF}

/* ---------- 工具条 ---------- */
.main{padding-top:28px;padding-bottom:52px;min-height:50vh}
.toolbar{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:18px}
.cats{display:flex;flex-wrap:wrap;gap:6px}
.cats a{padding:6px 13px;border-radius:20px;color:var(--ink2);font-size:13px;background:var(--bg)}
.cats a.on{background:var(--blue);color:#fff;font-weight:600}
.cats em{font-style:normal;opacity:.7;font-size:11px}
.tools{display:flex;gap:8px;align-items:center}
.tools input,.tools select{border:1px solid var(--line);border-radius:6px;padding:7px 10px;background:#fff;outline:none}
.tools input{width:190px}
.tools input:focus,.tools select:focus{border-color:var(--blue)}
.btn{border:none;border-radius:7px;padding:9px 18px;cursor:pointer;font-weight:600;background:var(--blue);color:#fff}
.btn:hover{background:var(--blue-d)}
.btn.ghost{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.btn.ghost:hover{background:#EEF5FF}
.btn.primary{background:var(--amber);color:#3A2500}
.btn.primary:hover{filter:brightness(1.06)}
.btn.gray{background:#EEF2F7;color:var(--ink2)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.filter-note{font-size:13px;color:var(--ink2);margin:0 0 14px}
.filter-note a{color:var(--blue)}

/* ---------- 商品卡 ---------- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(11,37,64,.11);border-color:#C8DCF5}
.card-img{height:210px;background:#EEF3F9;position:relative;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover}
.noimg{height:100%;display:flex;align-items:center;justify-content:center;color:#9AAEC2;font-size:13px}
.badge{position:absolute;left:12px;top:12px;background:var(--amber);color:#3A2500;font-size:11px;font-weight:700;border-radius:4px;padding:3px 8px}
.card-body{padding:15px 16px 16px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:16px;margin:0 0 6px;line-height:1.45}
.card-body .sub{color:var(--ink2);font-size:12.5px;margin:0 0 10px;min-height:38px;line-height:1.5}
.tags{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:12px}
.tag{font-size:11px;color:var(--teal);background:#EAF8F3;border-radius:4px;padding:2px 7px}
.cat{font-size:11px;color:var(--ink2);background:var(--bg);border-radius:4px;padding:2px 7px;margin-left:auto}
.card-foot{margin-top:auto;display:flex;align-items:baseline;justify-content:space-between}
.price{font-size:21px;font-weight:800;color:var(--red)}
.price.ask{font-size:18px;color:var(--blue)}
.unit{font-size:11px;color:var(--ink2);margin-left:2px}
.go{font-size:12px;color:var(--blue)}
.empty{background:#fff;border:1px dashed var(--line);border-radius:10px;padding:46px 20px;text-align:center;color:var(--ink2)}
.empty a{color:var(--blue)}
.empty h2{color:var(--ink);font-size:20px;margin:0 0 8px}

/* ---------- 详情 ---------- */
.crumb{font-size:12.5px;color:var(--ink2);padding-top:18px;padding-bottom:14px}
.crumb a:hover{color:var(--blue)}
.detail{display:grid;grid-template-columns:1fr 1fr;gap:34px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px;margin-bottom:22px}
.big{background:#EEF3F9;border-radius:9px;overflow:hidden;height:400px}
.big img{width:100%;height:100%;object-fit:contain}
.thumbs{display:flex;gap:9px;margin-top:10px}
.thumbs img{width:76px;height:64px;object-fit:cover;border-radius:6px;border:2px solid transparent;cursor:pointer}
.thumbs img.on{border-color:var(--blue)}
.catline{color:var(--blue);font-size:12px;font-weight:700;letter-spacing:1px}
.info h1{font-size:25px;line-height:1.4;margin:6px 0 6px}
.info .sub{color:var(--ink2);margin:0 0 18px;font-size:14px}
.p-num{font-size:32px;font-weight:800;color:var(--red);background:#FFF5F4;border-radius:8px;padding:12px 16px;margin-bottom:14px}
.p-num span{font-size:13px;color:var(--ink2);font-weight:400}
.p-num s{font-size:14px;color:#9AA7B5;font-weight:400;margin-left:10px}
.p-ask{font-size:28px;font-weight:800;color:var(--blue);background:#EEF5FF;border-radius:8px;padding:12px 16px;margin-bottom:6px}
.p-hint{font-size:12.5px;color:var(--ink2);margin-bottom:14px}
.paras{list-style:none;padding:0;margin:0 0 12px;border-top:1px solid var(--line)}
.paras li{display:flex;padding:8px 0;border-bottom:1px solid var(--line);font-size:13px}
.paras li span{width:92px;flex:none;color:var(--ink2)}
.qtyrow{display:flex;align-items:center;gap:14px;margin:16px 0;font-size:13px;color:var(--ink2)}
.stepper{display:flex;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.stepper button{width:34px;height:34px;border:none;background:#fff;cursor:pointer;font-size:17px;color:var(--ink)}
.stepper input{width:52px;height:34px;border:none;border-left:1px solid var(--line);border-right:1px solid var(--line);text-align:center;outline:none}
.buys{display:flex;gap:12px}
.buys .btn{flex:1;padding:12px;font-size:15px}
.buytip{color:var(--ink2);font-size:12px;margin-top:14px}
.sections{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 28px 20px;margin-bottom:22px}
.sections section{padding:18px 0;border-bottom:1px solid var(--line)}
.sections section:last-child{border-bottom:none}
.sections h2{font-size:17px;margin:0 0 10px;padding-left:11px;border-left:4px solid var(--blue)}
.sections p{color:#3D5266;margin:0;line-height:1.9}
.rel{padding-bottom:44px}
.rel h2{font-size:19px;margin:0 0 16px}

/* ---------- 购物车 / 结算 / 订单 ---------- */
.app-view{padding:30px 0 60px;min-height:56vh}
.app-title{font-size:23px;margin:0 0 4px}
.app-sub{color:var(--ink2);font-size:13px;margin:0 0 20px}
.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;margin-bottom:16px}
.panel h2{font-size:16px;margin:0 0 16px}
.cart-row{display:flex;gap:14px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line)}
.cart-row:last-child{border-bottom:none}
.cart-row img{width:82px;height:76px;object-fit:cover;border-radius:7px;background:#EEF3F9}
.cart-row .ci{flex:1;min-width:0}
.cart-row .ci b{display:block;font-size:14.5px}
.cart-row .ci small{color:var(--ink2);display:block;font-size:12px}
.cart-row .cp{font-weight:700;color:var(--red);min-width:90px;text-align:right}
.cart-row .del{color:#9AA7B5;cursor:pointer;font-size:12px;margin-left:12px}
.cart-row .del:hover{color:var(--red)}
.sum{display:flex;justify-content:flex-end;gap:26px;align-items:center;padding-top:16px;border-top:1px solid var(--line);font-size:14px}
.sum strong{font-size:24px;color:var(--red)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field label{display:block;font-size:12.5px;color:var(--ink2);margin-bottom:5px}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:7px;padding:10px 11px;outline:none;background:#fff}
.field input:focus,.field textarea:focus{border-color:var(--blue)}
.field.full{grid-column:1/-1}
.req{color:var(--red)}
.pay-line{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.pay-line span{background:var(--bg);border-radius:5px;padding:5px 10px;font-size:12.5px;color:var(--ink2)}
.msg{padding:11px 14px;border-radius:7px;margin:12px 0;font-size:13px}
.msg.err{background:#FFF0EF;color:#B22B22}
.msg.ok{background:#EAF8F3;color:#0B6E55}
.ok-box{text-align:center;padding:26px 10px}
.ok-box .tick{width:58px;height:58px;border-radius:50%;background:var(--teal);color:#fff;font-size:32px;line-height:58px;margin:0 auto 14px}
.ok-box h2{font-size:22px;margin:0 0 8px}
.ok-box .no{font-family:ui-monospace,Consolas,monospace;background:var(--bg);padding:7px 13px;border-radius:6px;display:inline-block;margin:6px 0 14px;font-size:15px}
.pay-box{background:#F7FAFE;border:1px solid var(--line);border-radius:9px;padding:16px;text-align:left;margin:18px auto 0;max-width:520px}
.pay-box img{width:150px;height:150px;object-fit:contain;margin:8px auto;border-radius:6px;background:#fff}
.order-status{display:inline-block;background:#FFF3D8;color:#976400;border-radius:5px;padding:3px 10px;font-size:12px;font-weight:700}
.timeline{margin:14px 0 0;padding:0;list-style:none}
.timeline li{font-size:12.5px;color:var(--ink2);padding:5px 0 5px 15px;border-left:2px solid var(--line);position:relative}
.timeline li:before{content:'';position:absolute;left:-5px;top:12px;width:8px;height:8px;border-radius:50%;background:var(--blue)}
.loading{text-align:center;color:var(--ink2);padding:60px 0}
.closed{background:#fff;border:1px solid var(--line);border-radius:12px;padding:50px;text-align:center;margin:40px 0;min-height:40vh}

/* ---------- 页脚 ---------- */
.foot{background:var(--navy);color:#C7D8EA;padding:26px 0;font-size:13px}
.foot-in{display:flex;flex-wrap:wrap;gap:20px;align-items:center}
.foot b{color:#fff}
.foot p{margin:3px 0}
.foot-link{margin-left:auto;display:flex;gap:18px}
.foot-link a:hover{color:#fff}
.copy{width:100%;border-top:1px solid rgba(255,255,255,.14);padding-top:12px;font-size:12px;opacity:.75}

@media(max-width:900px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .detail{grid-template-columns:1fr;gap:18px;padding:16px}
  .big{height:300px}
  .top-in{height:auto;flex-wrap:wrap;gap:10px;padding:10px 16px}
  .nav{order:3;width:100%;margin-left:0;gap:16px;overflow-x:auto;font-size:13px}
  .phone{margin-left:auto}
}
@media(max-width:600px){
  .grid{grid-template-columns:1fr}
  .hero-shop h1{font-size:24px}
  .tools input{width:130px}
  .toolbar{padding:12px}
  .cats a{padding:5px 10px;font-size:12px}
  .form-grid{grid-template-columns:1fr}
  .info h1{font-size:21px}
  .foot-link{margin-left:0;width:100%}
}