*{box-sizing:border-box}
:root{
  --navy:#0d2347; --navy2:#123b78; --blue:#1257b8; --blue2:#2b7de9;
  --soft:#eaf2ff; --ink:#1b2333; --muted:#6b7688; --line:#e3e8f0;
  --bg:#f6f8fc; --white:#fff; --accent:#ff7a45; --ok:#0e9f6e;
  --shadow:0 10px 30px rgba(13,35,71,.10); --radius:14px;
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
button{cursor:pointer}
h1,h2,h3{margin:0;line-height:1.25;letter-spacing:-.02em}
code{background:#f0f3f9;padding:1px 5px;border-radius:4px;font-size:12px}
.hidden,[hidden]{display:none!important}

/* header */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:24px;
  height:68px;padding:0 clamp(16px,4vw,56px);background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(13,35,71,.05)}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:11px;background:var(--navy);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:-1px}
.logo-mark span{color:#7fd0ff}
.logo-text{font-weight:800;font-size:17px;color:var(--navy);line-height:1.1}
.logo-text small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:.06em}
.nav{display:flex;gap:4px;flex:1}
.nav a{padding:8px 14px;border-radius:8px;color:#49566d;font-weight:600;font-size:13px;white-space:nowrap}
.nav a:hover,.nav a.active{background:var(--soft);color:var(--blue)}
.top-actions{display:flex;align-items:center;gap:10px}
.searchbox{display:flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fbfcff}
.searchbox input{border:0;background:transparent;padding:8px 12px;width:210px;outline:none;font-size:13px}
.searchbox button{border:0;background:var(--navy);color:#fff;padding:0 14px;font-size:12px;font-weight:600}
.cart-btn{position:relative;border:1px solid var(--navy);background:var(--navy);color:#fff;
  border-radius:9px;padding:9px 16px;font-weight:700;font-size:13px;white-space:nowrap}
.cart-btn:hover{background:var(--navy2)}
.cart-btn span{display:inline-grid;place-items:center;min-width:19px;height:19px;margin-left:6px;
  border-radius:10px;background:var(--accent);font-size:11px}

/* hero */
.hero{position:relative;overflow:hidden;display:grid;grid-template-columns:1.1fr .9fr;gap:30px;
  align-items:center;padding:clamp(38px,6vw,76px) clamp(20px,6vw,80px);
  background:linear-gradient(120deg,#0a1e40 0%,#123b78 58%,#1a5ab5 100%);color:#fff}
.hero:after{content:"";position:absolute;right:-120px;top:-160px;width:500px;height:500px;
  border-radius:50%;background:radial-gradient(circle,rgba(120,190,255,.22),transparent 65%)}
.hero-copy{position:relative;z-index:2;max-width:620px}
.eyebrow{display:block;font-size:11px;font-weight:800;letter-spacing:.22em;color:#78b8ff;margin-bottom:10px}
.hero .eyebrow{color:#8ec5ff}
.hero h1{font-size:clamp(32px,4.4vw,58px);font-weight:800;margin-bottom:18px}
.hero h1 em{font-style:normal;color:#8fd3ff}
.hero p{color:#cbdcf5;font-size:15px;max-width:560px;margin:0 0 26px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{margin-top:20px;font-size:11.5px;color:#9db7db}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;
  border-radius:9px;padding:11px 20px;font-weight:700;font-size:13.5px;transition:.15s;white-space:nowrap}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,69,.28)}
.btn.primary:hover{background:#f4682f;transform:translateY(-1px)}
.btn.ghost{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06)}
.btn.ghost:hover{background:rgba(255,255,255,.16)}
.btn.outline{background:#fff;border-color:var(--line);color:var(--navy)}
.btn.outline:hover{border-color:var(--blue);color:var(--blue)}
.btn.small{padding:8px 14px;font-size:12.5px}
.btn.full{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.hero-swatches{position:relative;z-index:2;display:grid;grid-template-columns:repeat(8,1fr);
  gap:6px;transform:rotate(-6deg) scale(1.06);filter:drop-shadow(0 18px 28px rgba(0,0,0,.28))}
.hero-swatches i{display:block;aspect-ratio:1;border-radius:7px;border:2px solid rgba(255,255,255,.35)}
.hero-swatches i:nth-child(7n){border-radius:50%}

.statbar{display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-bottom:1px solid var(--line)}
.statbar .stat{padding:18px 22px;border-right:1px solid var(--line);text-align:center}
.statbar .stat b{display:block;font-size:22px;color:var(--navy);font-weight:800;letter-spacing:-.03em}
.statbar .stat span{font-size:11.5px;color:var(--muted)}

/* sections */
.section{padding:clamp(34px,5vw,64px) clamp(20px,6vw,80px)}
.section:nth-of-type(even){background:#fff}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:24px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,34px);color:var(--navy);font-weight:800}
.section-head p{margin:8px 0 0;color:var(--muted);font-size:13.5px;max-width:640px}
.result-count{font-size:13px;color:var(--muted);font-weight:600}

/* brands — 首页品牌分类 */
#brands.section{background:#fff}
#brands > .section-head,#brands > .brand-groups,#brands > .brand-src{
  max-width:1120px;margin-left:auto;margin-right:auto}
.brand-groups{display:flex;flex-direction:column;gap:26px}
.brand-group-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
  margin-bottom:12px;padding-left:12px;border-left:4px solid var(--blue)}
.brand-group-head h3{font-size:16px;color:var(--navy);font-weight:800}
.brand-group-head .bg-en{font-size:10.5px;letter-spacing:.10em;color:var(--blue);font-weight:800}
.brand-group-head .bg-count{margin-left:auto;font-size:11.5px;color:var(--muted);font-weight:600}
.brand-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.brand-card{display:block;width:100%;padding:0;text-align:left;color:inherit;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.16s}
.brand-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#a9c8f5}
.brand-card.active{border-color:var(--blue);box-shadow:0 0 0 2px rgba(18,87,184,.14)}
.brand-card .bc-logo{height:96px;display:flex;align-items:center;justify-content:center;
  padding:8px;background:#fff;border-bottom:1px solid #f0f3f8}
.brand-card .bc-logo img{display:block;width:100%;height:100%;object-fit:contain}
.brand-card .bc-body{padding:11px 13px 13px}
.brand-card .bc-name{font-size:13.5px;font-weight:800;color:var(--navy);line-height:1.35;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-card .bc-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:7px}
.brand-card .bc-n{font-size:11.5px;color:var(--muted);font-weight:600}
.brand-card .bc-go{font-size:11px;color:var(--blue);font-weight:800;white-space:nowrap}
.brand-src{margin-top:22px;font-size:11.5px;color:#8a94a6;line-height:1.6}

/* shop */
.shop-layout{display:grid;grid-template-columns:230px 1fr;gap:24px;align-items:start}
.filters{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;
  box-shadow:var(--shadow);position:sticky;top:84px}
.filter-title{display:flex;justify-content:space-between;align-items:center;font-weight:800;
  color:var(--navy);margin-bottom:16px;font-size:14px}
.link{border:0;background:none;color:var(--blue);font-size:12px;padding:0}
.filters label{display:block;font-size:12px;color:var(--muted);font-weight:600;margin-bottom:14px}
.filters label .fnum{display:inline-flex;width:17px;height:17px;align-items:center;justify-content:center;
  border-radius:50%;background:var(--soft);color:var(--blue);font-size:10px;font-weight:800;
  margin-right:6px;vertical-align:1px}
.filter-path{display:flex;flex-wrap:wrap;align-items:center;gap:5px;font-size:11px;line-height:1.5;
  padding:8px 9px;margin:-4px 0 14px;background:var(--soft);border-radius:8px;color:#8a94a6}
.filter-path b{color:var(--navy);font-weight:700}
.filter-path i{font-style:normal;color:#b3bfd1}
.filters select{display:block;width:100%;margin-top:6px;padding:9px 10px;border:1px solid var(--line);
  border-radius:8px;background:#fbfcff;color:var(--ink);font-size:13px;outline:none}
.filters select:focus{border-color:var(--blue)}
.checkline{display:flex!important;align-items:center;gap:8px;color:var(--ink)!important;font-size:13px!important}
.checkline input{accent-color:var(--blue);width:16px;height:16px}
.filter-tip{font-size:11.5px;color:#8a94a6;background:var(--soft);padding:10px;border-radius:8px;line-height:1.5}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(228px,1fr));gap:16px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.18s;cursor:pointer;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c8daf5}
.product-card .pc-media{height:158px;position:relative;display:flex;align-items:flex-end;padding:12px;
  background:linear-gradient(180deg,#fff,#f1f5fa);border-bottom:1px solid var(--line)}
.product-card .pc-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;
  padding:12px;box-sizing:border-box}
.product-card .pc-tag{position:relative;z-index:2;background:rgba(255,255,255,.92);color:var(--navy);
  border-radius:20px;padding:3px 10px;font-size:10.5px;font-weight:800;letter-spacing:.02em}
.product-card .pc-body{padding:14px;display:flex;flex-direction:column;gap:8px;flex:1}
.pc-brand{font-size:10.5px;font-weight:800;color:var(--blue);letter-spacing:.08em;text-transform:uppercase}
.pc-name{font-weight:700;font-size:14px;line-height:1.35;min-height:38px;color:var(--navy)}
.pc-meta{font-size:11.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:5px 10px;align-items:center}
.pc-use{color:var(--blue);font-weight:700;background:var(--soft);border-radius:5px;padding:2px 7px;white-space:nowrap}
.pc-foot{display:flex;justify-content:space-between;align-items:baseline;gap:6px;flex-wrap:wrap;
  border-top:1px dashed var(--line);
  padding-top:10px;margin-top:auto}
.pc-more{font-size:11.5px;color:var(--muted);font-weight:600}
.pc-go{font-size:11.5px;color:var(--blue);font-weight:700}
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:26px;flex-wrap:wrap}
.pager button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 12px;
  color:var(--navy);font-size:12.5px;font-weight:600}
.pager button:hover:not(:disabled){border-color:var(--blue);color:var(--blue)}
.pager button.cur{background:var(--navy);color:#fff;border-color:var(--navy)}
.pager button:disabled{opacity:.4;cursor:not-allowed}
.pager .pinfo{font-size:12px;color:var(--muted);margin:0 8px}

/* colours */
.colour-toolbar{display:flex;justify-content:space-between;gap:16px;align-items:center;
  flex-wrap:wrap;margin-bottom:20px}
.family-tabs{display:flex;gap:6px;flex-wrap:wrap}
.family-tabs button{border:1px solid var(--line);background:#fff;border-radius:20px;
  padding:7px 14px;font-size:12.5px;color:#4d5a70;font-weight:600}
.family-tabs button:hover{border-color:var(--blue)}
.family-tabs button.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.colour-controls{display:flex;gap:8px;flex-wrap:wrap}
.colour-controls input,.colour-controls select,.lookup-box input,.picker-controls input,
.picker-controls select,.form-grid input,.form-grid textarea{border:1px solid var(--line);
  border-radius:8px;padding:9px 11px;background:#fff;outline:none;font-size:13px;color:var(--ink)}
.colour-controls input:focus,.lookup-box input:focus,.picker-controls input:focus,
.form-grid input:focus{border-color:var(--blue)}
.colour-controls input{width:220px}
.colour-controls select{max-width:180px}
.colour-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:10px}
.colour-grid.compact{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));max-height:48vh;overflow:auto;padding:2px}
.swatch{border:1px solid rgba(0,0,0,.06);border-radius:10px;overflow:hidden;cursor:pointer;
  background:#fff;transition:.15s;text-align:left}
.swatch:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.swatch .chip{height:88px;position:relative}
.swatch.compact-card .chip{height:64px}
.swatch .chip span{position:absolute;left:8px;bottom:7px;font-size:10px;font-weight:700;
  padding:2px 6px;border-radius:5px;background:rgba(255,255,255,.82);color:#1b2333}
.swatch .cap{padding:8px 9px 9px}
.swatch .cap b{display:block;font-size:11.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.swatch .cap small{display:block;color:var(--muted);font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* lookup */
.lookup-box{display:flex;gap:10px;flex-wrap:wrap;max-width:760px}
.lookup-box input{flex:1;min-width:200px}
#order-result{margin-top:20px;max-width:860px}
.order-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.order-head{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:14px}
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:800;
  background:#fff3e8;color:#c45a1c}
.badge.ok{background:#e6f7f0;color:var(--ok)}
.order-table{width:100%;border-collapse:collapse;font-size:12.5px}
.order-table th,.order-table td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line)}
.order-table th{color:var(--muted);font-weight:600;font-size:11px}
.order-table td b{color:var(--navy)}

/* about */
.about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.about-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.about-card h3{font-size:15px;color:var(--navy);margin-bottom:8px}
.about-card p{margin:0;color:#59657a;font-size:12.5px;line-height:1.7}
.footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px clamp(20px,6vw,80px);
  background:var(--navy);color:#9fb6d6;font-size:11.5px}

/* overlay / modal / drawer */
.overlay{position:fixed;inset:0;z-index:60;background:rgba(8,20,42,.55);backdrop-filter:blur(3px);
  display:grid;place-items:center;padding:18px}
.modal{position:relative;background:#fff;border-radius:18px;width:min(560px,100%);max-height:90vh;
  overflow:auto;padding:26px;box-shadow:0 24px 70px rgba(0,0,0,.28)}
.modal.wide{width:min(920px,100%)}
.modal h3{font-size:20px;color:var(--navy);margin-bottom:12px}
.close{position:absolute;right:14px;top:12px;width:30px;height:30px;border-radius:50%;border:0;
  background:#f0f3f9;color:#4a566b;font-size:20px;line-height:1}
.close:hover{background:#e0e7f2}
.drawer{position:fixed;right:0;top:0;bottom:0;width:min(420px,100%);z-index:65;background:#fff;
  box-shadow:-12px 0 40px rgba(0,0,0,.18);display:flex;flex-direction:column}
.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-head h3{color:var(--navy)}
.drawer-head .close{position:static}
.drawer-body{flex:1;overflow:auto;padding:14px 20px}
.drawer-foot{border-top:1px solid var(--line);padding:16px 20px}
.cart-total{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px}
.cart-total span{color:var(--muted);font-size:12.5px}
.cart-total b{font-size:22px;color:var(--navy)}
.cart-item{display:flex;gap:10px;padding:12px 0;border-bottom:1px dashed var(--line)}
.cart-chip{width:44px;height:44px;border-radius:9px;flex-shrink:0;border:1px solid rgba(0,0,0,.08)}
.cart-item .ci-main{flex:1;min-width:0}
.cart-item .ci-main b{display:block;font-size:12.5px;color:var(--navy);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cart-item .ci-main small{color:var(--muted);font-size:11px;display:block}
.qty{display:flex;align-items:center;gap:6px;margin-top:6px}
.qty button{width:22px;height:22px;border:1px solid var(--line);background:#fff;border-radius:5px;line-height:1}
.qty span{min-width:22px;text-align:center;font-size:12px}
.ci-del{border:0;background:none;color:#b0b9c8;font-size:16px}
.ci-del:hover{color:#d34545}
.empty{text-align:center;color:var(--muted);padding:40px 10px;font-size:13px}

/* product detail */
.pd-head{display:grid;grid-template-columns:170px 1fr;gap:20px}
.pd-media{height:170px;border-radius:14px;position:relative;overflow:hidden;
  background:linear-gradient(180deg,#fff,#f1f5fa);border:1px solid var(--line)}
.pd-media img{width:100%;height:100%;object-fit:contain;padding:10px;box-sizing:border-box}
.pd-title{font-size:21px;color:var(--navy);font-weight:800;margin-bottom:6px}
.pd-sub{color:var(--muted);font-size:12.5px;margin-bottom:12px}
.pd-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.tag{background:var(--soft);color:var(--navy);border-radius:6px;padding:4px 9px;font-size:11px;font-weight:700}
.tag.warn{background:#fff2e9;color:#b95b25}
.pd-sec{margin-top:22px;border-top:1px solid var(--line);padding-top:18px}
.pd-sec h4{margin:0 0 12px;font-size:13px;color:var(--navy)}
.opt-row{display:flex;gap:8px;flex-wrap:wrap}
.opt{border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px 13px;font-size:12.5px;color:var(--ink)}
.opt:hover{border-color:var(--blue)}
.opt.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.opt b{display:block;font-size:13px}
.opt small{display:block;opacity:.72;font-size:10.5px}
.pd-colour{display:flex;align-items:center;gap:12px;background:#f8faff;border:1px dashed var(--line);
  border-radius:10px;padding:12px;margin-top:10px}
.pd-colour .chip{width:52px;height:52px;border-radius:9px;border:1px solid rgba(0,0,0,.1)}
.pd-colour .txt{flex:1;font-size:12.5px}
.pd-colour .txt b{display:block;font-size:13.5px;color:var(--navy)}
.pd-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:22px;flex-wrap:wrap}
/* 官网产品信息：描述 / 关键特性 / 规格 / 来源 */
.pd-info{background:#f8faff;border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.pd-info h4{margin:0 0 10px}
.pd-desc{margin:0 0 12px;font-size:12.5px;line-height:1.7;color:#3c4a60}
.pd-points{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.pd-points span{background:#fff;border:1px solid var(--line);border-radius:6px;
  padding:4px 9px;font-size:11.5px;color:var(--navy)}
.pd-specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px;margin-bottom:12px}
.pd-specs>div{border-bottom:1px dashed var(--line);padding:5px 0;font-size:11.5px;min-width:0}
.pd-specs b{display:block;color:var(--muted);font-weight:600;font-size:10.5px;margin-bottom:2px}
.pd-specs span{color:var(--ink);word-break:break-word}
.pd-official{font-size:11.5px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.pd-official>span{color:var(--muted)}
.pd-link{color:var(--blue);text-decoration:none;font-weight:600}
.pd-link:hover{text-decoration:underline}
.pd-no-price{font-size:11.5px;color:var(--muted);flex:1;text-align:right}
.picker-constraint{font-size:12px;color:#9a5b20;background:#fff4e9;border-radius:8px;padding:8px 12px;margin-bottom:12px}
.picker-controls{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.picker-controls input{flex:1;min-width:190px}
.colour-detail-hero{height:150px;border-radius:12px;margin-bottom:16px;border:1px solid rgba(0,0,0,.08)}
.base-list{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.base-list span{background:var(--soft);color:var(--navy);border-radius:6px;padding:5px 10px;font-size:11.5px;font-weight:600}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}
.form-grid label{font-size:12px;color:var(--muted);font-weight:600}
.form-grid label.full{grid-column:1/-1}
.form-grid input,.form-grid textarea{width:100%;margin-top:5px}
.form-grid textarea{min-height:64px;resize:vertical}
.checkout-summary{background:#f8faff;border-radius:10px;padding:12px 14px;font-size:12.5px;margin-bottom:8px}
.success{text-align:center;padding:16px 4px}
.success .tick{width:58px;height:58px;border-radius:50%;background:#e6f7f0;color:var(--ok);
  font-size:30px;display:grid;place-items:center;margin:0 auto 14px}
.success h3{font-size:20px;color:var(--navy)}
.success p{color:var(--muted);font-size:13px}
.success .ono{display:inline-block;background:var(--soft);color:var(--navy);font-weight:800;
  font-size:17px;padding:8px 18px;border-radius:9px;margin:8px 0 16px;letter-spacing:.04em}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:90;
  background:var(--navy);color:#fff;padding:11px 20px;border-radius:10px;font-size:13px;
  box-shadow:var(--shadow);max-width:90vw}
.toast.err{background:#c33d3d}

/* 产品 -> 颜色 -> Base -> 升数 流程 */
.flow-steps{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-top:10px}
.flow-steps span{background:var(--navy);color:#fff;border-radius:20px;padding:4px 11px;
  font-size:10.5px;font-weight:700;letter-spacing:.01em}
.flow-steps i{font-style:normal;color:#9aa8bd;font-size:12px}
.step-note{font-weight:500;color:#6b7688;font-size:11.5px;margin-left:6px}
.step-actions{display:flex;gap:8px;flex-wrap:wrap}
.btn.ghostline{background:#fff;border-color:var(--line);color:var(--navy)}
.btn.ghostline:hover{border-color:var(--blue);color:var(--blue)}
.base-summary{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#f8faff;
  border:1px dashed #c8daf5;border-radius:10px;padding:12px 14px;margin-bottom:12px}
.base-summary b{font-size:16px;color:var(--navy)}
.base-summary>span:not(.auto-badge){font-size:12px;color:#59657a}
.base-summary small{font-size:11px;color:var(--muted);width:100%}
.auto-badge{background:var(--ok);color:#fff;border-radius:20px;padding:3px 10px;
  font-size:10.5px;font-weight:800}
.pending-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#eef6ff;
  border:1px solid #c8daf5;border-radius:10px;padding:10px 14px;margin-bottom:18px;
  font-size:12.5px;color:var(--navy)}
.pending-bar .pc-chip{width:26px;height:26px;border-radius:6px;border:1px solid rgba(0,0,0,.12);flex-shrink:0}
.pending-bar button{margin-left:auto;border:1px solid var(--line);background:#fff;
  border-radius:7px;padding:5px 10px;font-size:11.5px;font-weight:600;color:var(--blue)}

@media(max-width:1000px){
  .hero{grid-template-columns:1fr}.hero-swatches{max-width:520px;justify-self:end}
  .shop-layout{grid-template-columns:1fr}.filters{position:static}
  .statbar{grid-template-columns:repeat(3,1fr)}
  .nav{display:none}
}
@media(max-width:640px){
  .topbar{gap:10px;padding:0 14px}.searchbox input{width:120px}
  .logo-text small{display:none}.hero-swatches{grid-template-columns:repeat(6,1fr)}
  .statbar{grid-template-columns:repeat(2,1fr)}
  .pd-head{grid-template-columns:1fr}.pd-media{height:150px}
  .form-grid{grid-template-columns:1fr}
  .modal{padding:20px}
}

/* 用户体系：登录 / 注册 / 会员标识 */
.auth-btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 12px;
  font-size:12px;font-weight:600;color:var(--navy);cursor:pointer;white-space:nowrap}
.auth-btn:hover{border-color:var(--blue);color:var(--blue)}
.lang-btn{border:1px solid #c8daf5;background:#eef4ff;border-radius:8px;padding:7px 11px;
  font-size:12px;font-weight:700;color:var(--navy);cursor:pointer;white-space:nowrap;min-width:46px}
.lang-btn:hover{border-color:var(--blue);background:var(--soft)}
.lang-btn::before{content:"🌐";margin-right:5px;font-size:11px}
.user-chip{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--navy);
  background:#eef4ff;border:1px solid #c8daf5;border-radius:8px;padding:5px 10px;max-width:200px}
.user-chip b{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-chip i{font-style:normal;font-size:10px;background:var(--blue);color:#fff;border-radius:4px;padding:1px 4px}
.user-chip small{color:var(--muted);font-size:10px;white-space:nowrap}
.auth-modal{max-width:420px}
.auth-tabs{display:flex;gap:16px;margin:14px 0 18px;border-bottom:1px solid var(--line)}
.auth-tabs button{border:0;background:none;padding:8px 4px;margin-bottom:-1px;font-size:13px;
  color:var(--muted);border-bottom:2px solid transparent;cursor:pointer}
.auth-tabs button.active{color:var(--blue);border-bottom-color:var(--blue);font-weight:600}
.auth-form label{display:block;font-size:12px;color:var(--muted);font-weight:600;margin-bottom:12px}
.auth-form input,.auth-form select{display:block;width:100%;margin-top:6px;padding:9px 11px;
  border:1px solid var(--line);border-radius:8px;font-size:13px;color:var(--navy);background:#fff}
.auth-msg{min-height:18px;color:#c0392b;font-size:12px;margin:2px 0 8px}
.auth-note{font-size:11.5px;line-height:1.6;color:var(--muted);margin-top:12px}
.lookup-box .btn.ghost{white-space:nowrap}

/* ============================================================
   移动端适配 v2：弹窗重构为「近全屏底部面板」
   - 关闭按钮常驻右上角（弹窗自身不滚动，只有内容区滚）
   - 产品详情：单一滚动区 + 「加入购物车」吸底常驻
   - 选色器：标题/搜索/分页固定，色块网格独占滚动区
   ============================================================ */
@media (max-width: 760px){
  /* ---- 基础：触摸与表单 ---- */
  html{-webkit-text-size-adjust:100%}
  *{-webkit-tap-highlight-color:rgba(18,87,184,.10)}
  input,select,textarea{font-size:16px}          /* iOS 聚焦输入框不再自动放大 */
  .btn{min-height:44px}
  .close{width:40px;height:40px;font-size:24px;line-height:1}

  /* ---- 顶栏：换行，搜索占满一行，消除横向溢出 ---- */
  .topbar{height:auto;flex-wrap:wrap;gap:8px 10px;padding:8px 12px}
  .logo{flex:1 1 auto}
  .logo-text small{display:none}
  .top-actions{flex:1 1 100%;order:3;flex-wrap:wrap;gap:8px}
  .searchbox{flex:1 1 100%}
  .searchbox input{width:auto;flex:1;min-width:0;min-height:42px}
  .searchbox button{flex:0 0 auto}
  .auth-btn,.lang-btn{min-height:38px}
  .cart-btn{padding:8px 12px;min-height:38px}

  /* ---- 页面布局 ---- */
  .section{padding:26px 16px}
  .section-head{margin-bottom:18px}
  .statbar{grid-template-columns:repeat(2,1fr)}
  .statbar .stat{padding:14px 10px}
  .shop-layout{grid-template-columns:1fr;gap:14px}
  .filters{position:static}
  .product-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
  .product-card .pc-media{height:130px}
  .lookup-box{flex-direction:column;align-items:stretch}
  .lookup-box input{width:100%;min-height:44px}
  .order-card{overflow-x:auto}
  .footer{padding:20px 16px}

  /* ---- 色卡中心 ---- */
  .colour-toolbar{flex-direction:column;align-items:stretch;gap:12px}
  .colour-controls{flex-direction:column;align-items:stretch;width:100%}
  .colour-controls input,.colour-controls select,.colour-controls .btn{
    width:100%;max-width:none;min-height:44px}
  .family-tabs{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none}
  .family-tabs::-webkit-scrollbar{display:none}
  .family-tabs button{flex:0 0 auto;min-height:38px}
  .colour-grid{grid-template-columns:repeat(auto-fill,minmax(108px,1fr));gap:9px}

  /* ---- 弹窗容器：贴底、近全屏、自身不滚动 ---- */
  .overlay{display:flex;align-items:flex-end;justify-content:center;padding:0}
  .modal,.modal.wide,.picker-modal{
    width:100%;max-width:none;
    height:calc(100vh - 26px);
    height:calc(100dvh - 26px);
    max-height:none;margin:0;
    border-radius:18px 18px 0 0;
    padding:0;overflow:hidden;
    display:flex;flex-direction:column;
    box-shadow:0 -10px 40px rgba(0,0,0,.18);
  }
  /* 固定顶栏（承载关闭按钮），滚动内容从其下方穿过 */
  .modal:not(.picker-modal)::before{
    content:"";position:absolute;left:0;right:0;top:0;height:52px;
    background:#fff;border-bottom:1px solid var(--line);z-index:7}
  .modal>.close{position:absolute;right:12px;top:6px;z-index:8;
    background:#f0f3f9;box-shadow:0 2px 8px rgba(0,0,0,.10)}

  /* ---- 长内容弹窗：唯一滚动区 ---- */
  #product-detail,#colour-detail,#checkout-body{
    flex:1 1 auto;min-height:0;overflow-y:auto;
    -webkit-overflow-scrolling:touch;
    padding:64px 16px 0;
  }
  /* 产品详情底部由吸底的 pd-foot 自行承担安全区，容器不留底部 padding，
     否则 sticky 吸底栏下方会透出一条滚动内容 */
  #colour-detail{padding-bottom:calc(16px + env(safe-area-inset-bottom,0px))}
  /* 结算容器底部不留 padding，交给吸底的提交按钮自己承担安全区 */
  #checkout-body{padding-bottom:0}
  /* 关键：固定高度网格不要拉伸/压缩行，让色块保持原尺寸并产生真实滚动 */
  .colour-grid,.colour-grid.compact{align-content:start;grid-auto-rows:max-content}
  .colour-detail-hero{height:120px}
  .form-grid{grid-template-columns:1fr}
  /* 登录/注册：内容不多，不撑满全屏，改为高度自适应的贴底面板 */
  .auth-modal{display:block;height:auto;max-height:calc(100dvh - 26px);
    overflow-y:auto;
    padding:60px 20px calc(20px + env(safe-area-inset-bottom,0px))}
  .auth-modal h3{font-size:18px}
  .auth-form label{margin-bottom:14px}
  /* 结算：「提交订单」吸底常驻，无需滚到底。
     白色扩散阴影做不透明底衬，遮住滚动时从按钮下方透出的表单文字，
     同时保留橙色主按钮本身（.btn.primary 的配色不动） */
  #co-submit{position:sticky;bottom:0;z-index:4;
    margin:16px 0 calc(8px + env(safe-area-inset-bottom,0px));
    min-height:50px;
    box-shadow:0 0 0 14px #fff,0 -6px 18px rgba(13,35,71,.12)}

  /* ---- 产品详情内部 ---- */
  .pd-head{grid-template-columns:1fr;gap:14px}
  .pd-media{height:170px}
  .pd-title{font-size:19px}
  .pd-sec{margin-top:18px;padding-top:16px}
  .pd-sec h4{font-size:14px}
  .step-actions{flex-direction:column;align-items:stretch;gap:8px}
  .step-actions .btn{width:100%;min-height:46px;font-size:14px}
  .opt-row{gap:8px}
  .opt{min-height:46px;padding:10px 14px;font-size:13.5px}
  .pd-specs{grid-template-columns:1fr 1fr;gap:6px 12px}
  .pd-colour{flex-wrap:wrap}
  /* 「加入购物车」吸底常驻 */
  .pd-foot{position:sticky;bottom:0;z-index:4;background:#fff;
    margin:18px -16px 0;padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));
    border-top:1px solid var(--line);box-shadow:0 -6px 18px rgba(13,35,71,.07);gap:10px}
  .pd-foot .pd-no-price{display:none}
  .pd-foot #add-cart-btn{flex:1 1 100%;min-height:48px;font-size:15px}

  /* ---- 选色器：固定头 / 固定分页 / 网格独占滚动 ---- */
  .picker-modal::before{display:none}
  .picker-modal h3{flex:0 0 auto;margin:0;padding:14px 52px 12px 16px;
    font-size:16px;line-height:1.35;border-bottom:1px solid var(--line);background:#fff}
  .picker-modal .picker-constraint{flex:0 0 auto;margin:0;padding:9px 16px;
    border-radius:0;font-size:11px;line-height:1.5;background:#fff7ed;color:#9a5b20}
  .picker-controls{flex:0 0 auto;flex-direction:column;align-items:stretch;gap:8px;
    margin:0;padding:12px 16px;border-bottom:1px solid var(--line)}
  .picker-controls input,.picker-controls select,.picker-controls .btn{
    width:100%;min-width:0;min-height:44px}
  .colour-grid.compact{flex:1 1 auto;min-height:0;max-height:none;
    overflow-y:auto;-webkit-overflow-scrolling:touch;
    padding:12px 16px;gap:12px;
    grid-template-columns:repeat(auto-fill,minmax(104px,1fr))}
  .swatch.compact-card .chip{height:88px}
  .swatch.compact-card .cap{padding:9px 10px 11px}
  .swatch .chip span{font-size:10.5px;left:7px;bottom:7px;padding:2px 6px}
  .swatch .cap b{font-size:12.5px}
  .swatch .cap small{font-size:10.5px}
  .picker-modal .pager{flex:0 0 auto;margin:0;padding:10px 16px;gap:6px;
    border-top:1px solid var(--line);background:#fff;justify-content:center}
  .picker-modal .pager button{min-height:40px;padding:8px 12px}

  /* ---- 购物车抽屉 ---- */
  .drawer{width:100%}
  .drawer-foot{padding-bottom:calc(16px + env(safe-area-inset-bottom,0px))}
}

@media (max-width: 480px){
  .topbar{padding:8px 10px}
  .cart-btn span{margin-left:4px}
  .hero h1{font-size:30px}
  .product-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
  .colour-grid{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:11px}
  .colour-grid.compact{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:12px}
  .swatch.compact-card .chip{height:88px}
  .pd-specs{grid-template-columns:1fr}
  .nav{display:none}
}

/* 触屏设备去掉 hover 位移，避免点完后「粘住」 */
@media (hover:none){
  .product-card:hover,.swatch:hover,.brand-card:hover,.btn.primary:hover{transform:none;box-shadow:none}
  .nav a:hover{background:none}
}

/* 品牌分类：窄屏适配 */
@media (max-width: 900px){
  .brand-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
  .brand-card .bc-logo{height:82px}
}
@media (max-width: 600px){
  .brand-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .brand-card .bc-logo{height:76px}
  .brand-group-head .bg-count{margin-left:0;width:100%}
}