:root{
  --ink:#121721; --ink2:#4b5563; --line:#e6e9ef; --bg:#f7f8fb; --white:#fff;
  --brand:#1a5cff; --brand-d:#0e43c9; --accent:#ff6b35; --ok:#12a150; --warn:#c9401c;
  --r:10px; --shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px rgba(16,24,40,.06);
  --wrap:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,sans-serif;color:var(--ink);background:var(--white)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.25;font-weight:650;letter-spacing:-.01em}
h1{font-size:26px}h2{font-size:20px}h3{font-size:16px}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
main.wrap{padding-top:22px;padding-bottom:56px;min-height:50vh}
ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
small{font-size:12px;color:var(--ink2)}
em{font-style:normal}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.block{display:block;width:100%}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:var(--r);padding:10px 18px;background:#eef1f6;color:var(--ink);cursor:pointer;font-weight:600;transition:.15s}
.btn:hover{background:#e3e8f0}
.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-d)}
.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#000}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}.btn-ghost:hover{background:#f2f6ff}
.btn-plain{background:transparent;border-color:var(--line);color:var(--ink2);font-weight:500}.btn-plain:hover{background:var(--bg)}
.btn-lg{padding:14px 22px;font-size:16px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.link-btn{background:none;border:0;cursor:pointer;color:var(--ink2);font-size:16px;padding:2px 6px}
.link-btn:hover{color:var(--warn)}
.flash{margin:0 0 16px;padding:12px 16px;border-radius:var(--r);background:#eef4ff;border:1px solid #cfe0ff;color:#123}
.flash-error{background:#fff1ec;border-color:#ffc9b8;color:#8a2b12}
.flash-success{background:#eefaf2;border-color:#bdeacd;color:#12633a}
.flash-warning{background:#fff8e6;border-color:#ffe3a3;color:#8a5b00}
.topbar{background:var(--ink);color:#fff;font-size:13px;text-align:center;padding:8px 12px}
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;gap:18px;height:64px}
.logo{font-size:19px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;flex:1;min-width:0}
.main-nav>a,.main-nav .nav-item>a{padding:8px 10px;border-radius:8px;font-weight:500;white-space:nowrap;font-size:14px}
.main-nav>a:hover,.main-nav .nav-item:hover>a,.main-nav>a.on{background:var(--bg)}
.nav-item{position:relative}
.nav-item .sub{position:absolute;left:0;top:100%;min-width:190px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;display:none}
.nav-item:hover .sub{display:block}
.nav-item .sub a{display:block;padding:7px 10px;border-radius:8px;font-size:14px}
.nav-item .sub a:hover{background:var(--bg)}
.search{display:flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--line);border-radius:99px;padding:4px 4px 4px 14px;min-width:200px}
.search input{border:0;background:none;outline:0;width:100%;font-size:14px}
.search button{border:0;background:none;cursor:pointer;font-size:17px;color:var(--ink2);padding:4px 10px}
.header-tools{display:flex;align-items:center;gap:10px}
.cur-sw select{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 6px;font-size:13px}
.lang-sw{font-size:13px;font-weight:600}
.cart-link{position:relative;font-size:19px;padding:4px}
.cart-count{position:absolute;top:-4px;right:-9px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:grid;place-items:center;padding:0 4px}
.icon-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;font-size:17px;padding:5px 9px;cursor:pointer}
.menu-toggle{display:none}
.page-title{margin-bottom:18px}
.lead{color:var(--ink2);margin-bottom:20px}
/* hero */
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center;padding:46px 0 34px;border-bottom:1px solid var(--line)}
.kicker{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--brand);background:#eef4ff;padding:5px 10px;border-radius:99px;margin-bottom:14px}
.hero h1{font-size:38px;line-height:1.12;margin-bottom:14px}
.hero p{color:var(--ink2);font-size:16px;max-width:46ch}
.hero-cta{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.hero-art{position:relative;height:300px}
.art-ring{position:absolute;inset:0;border-radius:24px;background:conic-gradient(from 210deg,#dbe7ff,#e9e4ff,#d8f0ff,#dbe7ff);filter:blur(2px)}
.art-card{position:absolute;inset:36px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;gap:12px;font-weight:800;color:var(--ink2);letter-spacing:.04em}
.art-card span{border:1px solid var(--line);border-radius:8px;padding:10px 14px;font-size:15px}
.trust{display:flex;flex-wrap:wrap;gap:10px 26px;padding:16px 0;border-bottom:1px solid var(--line);color:var(--ink2);font-size:14px}
.block{padding:34px 0;border-bottom:1px solid var(--line)}
.block-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px}
.more{color:var(--brand);font-weight:600;font-size:14px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.cat-tile{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:4px;transition:.15s}
.cat-tile:hover{border-color:var(--brand);transform:translateY(-2px);background:#fff;box-shadow:var(--shadow)}
.cat-tile strong{font-size:16px}
.cat-sub{font-size:12px;color:var(--ink2);min-height:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(216px,1fr));gap:18px}
.usp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.usp-grid h3{color:var(--brand);font-size:15px}
.usp-grid p{color:var(--ink2);font-size:14px;margin:0}
/* card */
.card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:.15s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:#cfd6e4}
.card-media{position:relative;display:block;aspect-ratio:1/1;background:var(--bg)}
.card-media img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;top:8px;left:8px;font-size:11px;font-weight:700;padding:4px 8px;border-radius:6px}
.badge-off{background:var(--accent);color:#fff;left:auto;right:8px}
.badge-new{background:var(--brand);color:#fff}
.card-soldout{position:absolute;inset:0;background:rgba(255,255,255,.72);display:grid;place-items:center;font-weight:700;color:var(--ink2)}
.card-body{padding:12px 14px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.card-title{font-size:14.5px;line-height:1.4;font-weight:600;margin:0}
.card-sum{font-size:12.5px;color:var(--ink2);margin:0;min-height:32px}
.card-price{display:flex;align-items:baseline;gap:8px;margin-top:auto}
.price{font-weight:700;font-size:16px}
.was{color:var(--ink2);font-size:13px}
.card-brand{font-size:11.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink2)}
/* list layout */
.list-layout{display:grid;grid-template-columns:240px 1fr;gap:26px;align-items:start;padding-top:8px}
.filters{position:sticky;top:80px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.f-title{font-size:14px;margin:14px 0 10px;padding-top:12px;border-top:1px solid var(--line)}
.filters form:first-of-type .f-title:first-child{margin-top:0}
.f-group{margin-bottom:14px}
.f-group label{display:block;font-size:13px;color:var(--ink2);margin-bottom:6px}
.f-row{display:flex;gap:8px}
.f-group input,.f-group select{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff}
.f-cats li{margin-bottom:6px;font-size:14px}
.f-cats ul{padding-left:12px;margin-top:4px;color:var(--ink2);font-size:13px}
.list-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:16px;border-bottom:1px solid var(--line);padding-bottom:12px}
.list-head h1{margin:0;font-size:22px}
.count{color:var(--ink2);font-size:13px}
.sort-form{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink2)}
.sort-form select{border:1px solid var(--line);border-radius:8px;padding:6px 8px;background:#fff}
.pager{display:flex;gap:6px;justify-content:center;margin-top:26px}
.pager a{border:1px solid var(--line);border-radius:8px;padding:7px 12px;font-size:14px;background:#fff}
.pager a.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.empty{text-align:center;padding:60px 20px;color:var(--ink2)}
.empty.big h1{font-size:46px}
.empty .btn{margin-top:12px}
/* pdp */
.crumbs{font-size:13px;color:var(--ink2);padding:6px 0 14px}
.crumbs a:hover{color:var(--brand)}
.pdp{display:grid;grid-template-columns:1.02fr 1fr;gap:34px}
.pdp-main-img{position:relative;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--bg);aspect-ratio:1/1}
.pdp-main-img img{width:100%;height:100%;object-fit:cover}
.pdp-thumbs{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.thumb{border:1px solid var(--line);border-radius:10px;overflow:hidden;padding:0;background:#fff;cursor:pointer;width:72px}
.thumb.on{border-color:var(--ink)}
.pdp-buy h1{font-size:26px;margin-bottom:8px}
.pdp-sum{color:var(--ink2)}
.pdp-price{display:flex;align-items:baseline;gap:10px;margin:14px 0 18px;flex-wrap:wrap}
.pdp-price .now{font-size:28px;font-weight:800}
.pdp-price .was{font-size:16px}
.pdp-price .save{background:#fff0e9;color:var(--accent);font-weight:700;font-size:12px;padding:3px 8px;border-radius:6px}
.cur-note{font-size:12px;color:var(--ink2)}
.opt-groups{margin-bottom:16px}
.opt-group{margin-bottom:12px}
.opt-label{display:block;font-size:13px;color:var(--ink2);margin-bottom:6px}
.opt{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 14px;margin:0 6px 6px 0;cursor:pointer;font-size:14px}
.opt.on{border-color:var(--ink);background:var(--ink);color:#fff;font-weight:600}
.opt.off{opacity:.4;text-decoration:line-through;cursor:not-allowed}
.opt-hint{font-size:12.5px;color:var(--warn);margin:2px 0 0}
.buy-row{display:flex;align-items:center;gap:14px;margin:16px 0}
.qty-picker{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.qty-picker button{width:34px;border:0;background:var(--bg);cursor:pointer;font-size:16px}
.qty-picker input{width:56px;border:0;text-align:center;outline:0}
.stock-note{font-size:13px;color:var(--ok);font-weight:600}
.stock-note.out{color:var(--warn)}
.buy-actions{display:flex;gap:10px;flex-wrap:wrap}
.buy-actions .btn{flex:1;min-width:170px}
.sku-line{font-size:12.5px;color:var(--ink2);margin:12px 0 0}
.pdp-meta{margin:18px 0 0;border-top:1px solid var(--line)}
.pdp-meta li{display:flex;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
.pdp-meta li span{width:150px;color:var(--ink2);flex:none}
.ship-hint{margin-top:14px;background:var(--bg);border-radius:10px;padding:10px 14px;font-size:13.5px;color:var(--ink2)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);border-radius:99px;padding:6px 12px;font-size:13px;background:#fff}
.spec-table{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.spec-table th,.spec-table td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
.spec-table th{width:220px;background:var(--bg);color:var(--ink2);font-weight:500}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}
.pdp-body{font-size:15px;max-width:820px}
.pdp-body h3{margin-top:1.4em}
.pdp-body ul{list-style:disc;padding-left:20px}
.pdp-body p,.pdp-body li{margin-bottom:.7em}
/* cart / checkout */
.cart-layout{display:grid;grid-template-columns:1fr 340px;gap:26px;align-items:start}
.cart-table th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink2);text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
.cart-table td{padding:14px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
.c-item{display:flex;gap:12px;align-items:flex-start}
.c-item img{border-radius:8px;border:1px solid var(--line);flex:none}
.c-item a{font-weight:600}
.c-item small{display:block}
.c-item .warn{color:var(--warn);display:block;font-size:12px}
.c-qty input{width:64px;border:1px solid var(--line);border-radius:8px;padding:7px 8px}
.inline-form{display:flex;gap:6px;align-items:center}
.cart-foot{display:flex;justify-content:space-between;gap:12px;margin-top:16px;flex-wrap:wrap}
.summary{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:18px;position:sticky;top:80px}
.summary h2{font-size:16px}
.summary dl{margin:0;display:grid;grid-template-columns:1fr auto;gap:8px 10px;font-size:14px}
.summary dt{color:var(--ink2)}
.summary dd{margin:0;text-align:right}
.summary dt small{display:block;font-size:11.5px}
.summary .ttl{font-weight:800;font-size:16px;color:var(--ink)}
.summary .btn{margin-top:14px}
.free-hint{background:#fff7ed;border:1px dashed #fbbf7c;border-radius:8px;padding:8px 10px;font-size:13px;margin:12px 0 0;color:#9a3412}
.est-form{margin-top:14px}
.est-form label{display:block;font-size:13px;color:var(--ink2);margin-bottom:6px}
.est-form select{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px 10px;background:#fff}
.secure{font-size:12px;color:var(--ink2);margin:12px 0 0}
.checkout{display:grid;grid-template-columns:1fr 360px;gap:26px;align-items:start}
.co-sec{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:16px}
.co-sec h2{font-size:16px;margin-bottom:14px}
.fld-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fld{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--ink2)}
.fld.span2{grid-column:span 2}
.fld input,.fld select,.fld textarea{border:1px solid var(--line);border-radius:9px;padding:11px 12px;background:#fff;width:100%}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:2px solid #cfe0ff;border-color:var(--brand)}
.pay-opt{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:10px;cursor:pointer}
.pay-opt:has(input:checked){border-color:var(--brand);background:#f6f9ff}
.pay-name{font-weight:600}
.tag-demo{color:#9a3412;background:#fff7ed;font-size:12px;padding:2px 8px;border-radius:6px}
.tag-offline{color:var(--ink2);font-size:12.5px}
.agree{display:flex;gap:8px;align-items:flex-start;font-size:13.5px;color:var(--ink2);margin:6px 0 14px}
.agree a{color:var(--brand);text-decoration:underline;text-underline-offset:2px}
.agree em.agree-more{display:block;font-size:12px;color:var(--ink2);margin-top:2px}
.policy-strip{display:none}
.co-summary .sum-lines li{display:flex;gap:10px;align-items:center;font-size:13px;padding:8px 0;border-bottom:1px solid var(--line)}
.co-summary .sum-lines img{border-radius:6px;flex:none}
.co-summary .sum-lines span{flex:1}
.base-note{font-size:12px;color:var(--ink2)}
.lookup-form{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;max-width:720px}
.lookup-form .fld{flex:1;min-width:200px}
/* thanks */
.thanks{max-width:760px;margin:0 auto}
.thanks .lead{font-size:15px}
.thanks-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}
.tc-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
.tc-row span{color:var(--ink2)}
.tc-row b{text-align:right}
.st-paid,.st-shipped,.st-completed{color:var(--ok)}
.st-pending_payment{color:#b45309}
.st-cancelled,.st-refunded{color:var(--ink2)}
.tk-items{margin:14px 0}
.tk-items li{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:6px 0}
.offline-box,.retry-box{background:var(--bg);border-radius:12px;padding:14px;margin:12px 0}
.offline-box h3{font-size:14px}
.tc-cta{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.next-steps{margin-top:26px}
.next-steps ol{padding-left:20px;color:var(--ink2)}
.cms-page{max-width:820px}
.cms-page h2{margin-top:1.6em}
.cms-page ul{list-style:disc;padding-left:20px}
/* footer */
.site-footer{background:#0e1219;color:#c8cfdb;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:26px;padding:40px 20px 26px}
.foot-cols{display:contents}
.foot-acc > summary{display:none}
.site-footer h4{color:#fff;font-size:14px;margin-bottom:12px}
.site-footer li{margin-bottom:8px;font-size:14px}
.site-footer a:hover{color:#fff;text-decoration:underline}
.foot-logo{font-size:18px;font-weight:800;color:#fff;margin-bottom:8px}
.foot-desc{font-size:13.5px;color:#9aa5b6}
.nl-form{display:flex;gap:8px}
.nl-form input{border:1px solid #2a3444;background:#141a24;color:#fff;border-radius:9px;padding:10px 12px;flex:1;min-width:0}
.nl-form button{border:0;background:var(--brand);color:#fff;border-radius:9px;padding:10px 14px;cursor:pointer;font-weight:600}
.foot-bottom{display:flex;gap:14px;justify-content:space-between;flex-wrap:wrap;padding:16px 20px 26px;border-top:1px solid #1f2734;font-size:13px;color:#9aa5b6}
.foot-links a:hover{color:#fff}
.tagline{font-size:12px;color:#9aa5b6}
@media (max-width:1000px){
  .pdp,.cart-layout,.checkout,.list-layout{grid-template-columns:1fr}
  .summary,.filters{position:static}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:30px}
}
@media (max-width:760px){
  .header-in{flex-wrap:wrap;height:auto;padding:10px 0;gap:10px}
  .menu-toggle{display:block}
  .search{order:3;width:100%}
  .main-nav{display:none;order:4;width:100%;flex-direction:column;align-items:stretch;gap:2px}
  .main-nav.open{display:flex}
  .main-nav .sub{position:static;display:block;box-shadow:none;border:0;padding-left:12px}
  .nav-item>a{display:block}
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
  .card-sum{display:none}
  .pdp-meta li{flex-direction:column;gap:2px}
  .pdp-meta li span{width:auto}
  .fld-grid{grid-template-columns:1fr}
  .fld.span2{grid-column:span 1}
  .foot-grid{grid-template-columns:1fr}
  .cart-table thead{display:none}
  .cart-table td{display:flex;justify-content:space-between;padding:8px}
  .c-item{display:flex}
  h1{font-size:22px}
}

/* ═══════════════════════════════════════════════
   移动端专项优化（≤760px）—— 触摸目标、吸底操作栏、抽屉筛选、底部导航
   只覆盖上面对应规则，桌面端表现不变
   ═══════════════════════════════════════════════ */
:root{
  --tab-h:56px;          /* 底部导航高度 */
  --bar-h:60px;          /* 吸底操作栏高度 */
  --safe-b:env(safe-area-inset-bottom,0px);
}
@media (max-width:760px){
  /* 基础排版：小屏字号收一收，行距拉开一点更好读 */
  html{-webkit-text-size-adjust:100%}
  body{font-size:15px;text-rendering:optimizeLegibility}
  .wrap{padding:0 14px}
  main.wrap{padding-bottom:calc(var(--tab-h) + var(--safe-b) + 18px)}
  h1{font-size:21px}h2{font-size:17px}

  /* 顶部栏：更矮、图标更大，搜索框单独一行 */
  .site-header{top:0;box-shadow:0 1px 0 rgba(16,24,40,.06)}
  .header-in{height:54px;gap:8px;padding:6px 0}
  .logo{font-size:17px}
  .search{min-width:0;flex:1;height:38px;padding-left:12px}
  .search input{font-size:15px}
  .cart-link{font-size:20px;padding:6px}
  .cart-count{top:-2px;right:-6px}
  .cur-sw select{height:34px;font-size:12.5px;padding:4px}
  .lang-sw a{display:grid;place-items:center;height:34px;padding:0 8px;border:1px solid var(--line);border-radius:8px}
  .header-tools{gap:6px}

  /* 抽屉式分类菜单：从左侧滑出，带遮罩 */
  .main-nav{
    display:block;position:fixed;inset:0 auto 0 0;width:78%;max-width:320px;
    background:#fff;border-right:1px solid var(--line);z-index:60;
    padding:16px 12px calc(16px + var(--safe-b));overflow-y:auto;
    transform:translateX(-102%);transition:transform .22s ease;box-shadow:0 10px 40px rgba(16,24,40,.18)
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav>a,.main-nav .nav-item>a{font-size:16px;padding:12px 10px;min-height:44px}
  .main-nav .sub{position:static;display:block;box-shadow:none;border:0;padding:0 0 4px 14px}
  .main-nav .sub a{font-size:14.5px;padding:9px 10px;min-height:40px}
  .nav-overlay{display:none;position:fixed;inset:0;background:rgba(16,24,40,.42);z-index:55}
  body.nav-open .nav-overlay{display:block}
  .icon-btn,.menu-toggle{display:grid;place-items:center;width:40px;height:40px;font-size:19px;border-radius:10px}

  /* 首屏 */
  .topbar{font-size:12px;padding:7px 12px;line-height:1.45}
  .hero{grid-template-columns:1fr;gap:18px;padding:22px 0 18px}
  .hero h1{font-size:26px;line-height:1.18}
  .hero p{font-size:14.5px}
  .hero-art{display:none}
  .hero-cta{gap:8px}
  .hero-cta .btn{flex:1;min-width:0;height:46px;font-size:15px}
  .trust{gap:8px 14px;font-size:12.5px;padding:12px 0}
  .block{padding:22px 0}
  .block-head h2{font-size:18px}
  .cat-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}
  .cat-tile{padding:13px;border-radius:12px}
  .cat-tile strong{font-size:14.5px}
  .cat-sub{font-size:11px;min-height:0}
  .usp-grid{grid-template-columns:1fr;gap:12px}

  /* 商品卡：两列更贴合手机宽度，价格字号提上去 */
  .grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .card{border-radius:12px}
  .card-body{padding:9px 10px 12px;gap:4px}
  .card-title{font-size:13.5px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-price{margin-top:4px}
  .price{font-size:15.5px}
  .was{font-size:12px}
  .card-brand{font-size:10.5px}
  .badge{font-size:10px;padding:3px 6px}

  /* 列表页：筛选变底部抽屉，标题行紧凑 */
  .list-layout{display:block}
  .f-btn-mobile{
    display:flex;align-items:center;justify-content:center;gap:6px;width:100%;height:44px;
    border:1px solid var(--line);border-radius:10px;background:#fff;font-weight:600;font-size:14.5px;margin-bottom:12px
  }
  .filters{
    position:fixed;left:0;right:0;bottom:0;top:auto;z-index:70;width:auto;max-height:76vh;overflow-y:auto;
    border-radius:16px 16px 0 0;border:0;border-top:1px solid var(--line);padding:18px 16px calc(18px + var(--safe-b));
    transform:translateY(102%);transition:transform .24s ease;box-shadow:0 -10px 40px rgba(16,24,40,.2)
  }
  .filters.open{transform:translateY(0)}
  .filters .f-cats{display:none}
  .filters .f-title:last-of-type{display:none}
  .f-group input,.f-group select{height:42px;font-size:15px}
  .list-head{gap:8px;padding-bottom:10px;margin-bottom:12px}
  .list-head h1{font-size:19px;width:100%}
  .count{font-size:12.5px}
  .sort-form{margin-left:auto}
  .sort-form select{height:36px;font-size:13px}
  .pager a{min-width:38px;min-height:38px;display:inline-grid;place-items:center}

  /* 商品详情：图片满宽，购买操作吸底常驻 */
  .pdp{display:block;gap:0}
  .pdp-main-img{border-radius:14px}
  .pdp-thumbs{gap:6px}
  .thumb{width:56px}
  .pdp-buy{padding-top:14px}
  .pdp-buy h1{font-size:20px;line-height:1.3}
  .pdp-price .now{font-size:25px}
  .opt{min-height:40px;padding:9px 14px;font-size:14.5px}
  .qty-picker button{width:42px;height:44px;font-size:18px}
  .qty-picker input{height:44px;width:60px;font-size:16px}
  .buy-row{margin:14px 0 4px;flex-wrap:wrap}
  /* 隐藏表单里原有的按钮区，改用吸底栏（同一个表单，提交行为不变） */
  .buy-actions{
    position:fixed;left:0;right:0;bottom:calc(var(--tab-h) + var(--safe-b));z-index:50;
    display:flex;gap:8px;margin:0;padding:9px 12px;background:rgba(255,255,255,.97);
    backdrop-filter:blur(8px);border-top:1px solid var(--line);
    box-shadow:0 -4px 20px rgba(16,24,40,.08)
  }
  .buy-actions .btn{flex:1;min-width:0;height:46px;font-size:15.5px;border-radius:10px}
  .buy-placeholder{display:block;height:calc(var(--bar-h) + 18px)}
  .pdp-meta li{font-size:13.5px;padding:8px 0}
  .pdp-meta li span{width:104px;font-size:12.5px}
  .spec-table th{width:112px;font-size:13px;padding:9px 10px}
  .spec-table td{font-size:13px;padding:9px 10px}
  .chips{gap:6px}
  .chip{font-size:12.5px;padding:5px 10px}
  .crumbs{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .sku-line{margin-bottom:0}

  /* 购物车：卡片式行，不用横滚表格 */
  .cart-layout{display:block;gap:16px}
  .cart-table,.cart-table tbody,.cart-table tr,.cart-table td{display:block;width:100%}
  .cart-table thead{display:none}
  .cart-table tr{border:1px solid var(--line);border-radius:12px;padding:10px;margin-bottom:10px;background:#fff}
  .cart-table td{border:0;padding:0;display:flex;justify-content:space-between;align-items:center;gap:10px;min-height:34px}
  .cart-table td.c-item{display:flex;align-items:flex-start;margin-bottom:6px}
  .c-item img{width:76px;height:76px}
  .c-item a{font-size:14.5px}
  .c-qty input{height:40px;width:70px;font-size:16px}
  .cart-foot{flex-direction:column;gap:8px}
  .cart-foot .btn{width:100%;height:44px}
  .summary{position:static;border-radius:14px;padding:16px}
  .summary .btn{height:48px;font-size:16px}
  .est-form select{height:44px;font-size:15px}

  /* 结算：单列，输入控件够大不放大页面 */
  .checkout{display:block;gap:16px}
  .co-main{order:1}
  .co-summary{order:0}
  .co-sec{padding:16px;border-radius:14px;margin-bottom:12px}
  .fld input,.fld select,.fld textarea{height:46px;font-size:16px;border-radius:10px}
  .fld textarea{height:auto;min-height:88px;padding:11px 12px}
  .pay-opt{min-height:54px;padding:12px}
  .pay-opt input[type=radio]{width:20px;height:20px}
  .agree{font-size:13.5px;margin-bottom:10px}
  .agree input{width:19px;height:19px}
  .co-summary .btn{height:50px;font-size:16px}
  .lookup-form{display:block}
  .lookup-form .fld{margin-bottom:12px}
  .lookup-form .btn{width:100%;height:46px}

  /* 内容页 / 成功页 */
  .thanks{padding-bottom:8px}
  .thanks-card{padding:16px;border-radius:14px}
  .tc-row{font-size:13.5px;padding:8px 0}
  .tc-cta .btn{flex:1;min-width:0;height:44px}
  .cms-page h1{font-size:21px}
  .empty{padding:40px 14px}
  .empty .btn{height:44px}

  /* 表单错误/提示更醒目 */
  .flash{font-size:13.5px;padding:11px 13px;border-radius:10px}
  .free-hint{font-size:12.5px}

  /* 底部导航栏 */
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:65;height:calc(var(--tab-h) + var(--safe-b));
    padding-bottom:var(--safe-b);background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
    border-top:1px solid var(--line)
  }
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;color:var(--ink2);position:relative;min-width:0}
  .tabbar a.on{color:var(--brand);font-weight:700}
  .tabbar .ti{font-size:19px;line-height:1}
  .tabbar .tab-badge{position:absolute;top:5px;left:calc(50% + 8px);background:var(--accent);color:#fff;font-size:10px;font-weight:700;min-width:16px;height:16px;border-radius:8px;display:grid;place-items:center;padding:0 3px}
}
/* ≥761px：抽屉、吸底栏、底部导航一律不出现 */
@media (min-width:761px){
  .tabbar{display:none!important}
  .f-btn-mobile{display:none!important}
  .buy-placeholder{display:none!important}
  .nav-overlay{display:none!important}
}

/* 筛选按钮上的小箭头（移动端） */
.f-chev{display:none}
@media (max-width:760px){
  .f-chev{display:inline;font-size:12px;color:var(--ink2)}
  .filters{ -webkit-overflow-scrolling:touch }
  .filters::before{
    content:"";position:absolute;top:8px;left:50%;transform:translateX(-50%);
    width:38px;height:4px;border-radius:2px;background:#d7dce6
  }
  .filters{padding-top:24px}
}

/* ═══ 详情页折叠面板（大图优先版式）═══ */
.quick-facts{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 14px;padding:0;list-style:none}
.quick-facts li{flex:1;min-width:110px;background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:7px 10px;display:flex;flex-direction:column;gap:2px}
.quick-facts span{font-size:11px;color:var(--ink2);letter-spacing:.02em}
.quick-facts b{font-size:13px;font-weight:650;line-height:1.35}
.acc{border:0;padding:0;margin:0}
.acc-wrap{padding:0;border-bottom:1px solid var(--line)}
.acc-wrap + .acc-wrap{border-top:0}
.acc > summary{
  display:flex;align-items:center;gap:8px;cursor:pointer;list-style:none;
  padding:16px 0;font-size:17px;font-weight:650;color:var(--ink)
}
.acc > summary::-webkit-details-marker{display:none}
.acc > summary em{font-style:normal;font-size:12px;font-weight:600;color:var(--ink2);background:var(--bg);border:1px solid var(--line);border-radius:99px;padding:1px 8px}
.acc-arrow{flex:none;width:18px;height:18px;margin-left:auto;position:relative}
.acc-arrow::before,.acc-arrow::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink2);
  transform:translate(-50%,-50%);transition:opacity .18s ease
}
.acc-arrow::before{width:11px;height:1.6px}
.acc-arrow::after{width:1.6px;height:11px}
.acc[open] > summary .acc-arrow::after{opacity:0}
.acc[open] > summary{padding-bottom:8px}
.acc > .chips,.acc > table,.acc > .pdp-meta{margin:6px 0 18px}
.acc > .pdp-meta{margin:6px 0 4px}
.acc[open]{animation:accIn .18s ease}
@keyframes accIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.pdp-body.acc-wrap [open],.pdp-body .acc[open]{padding-bottom:8px}
.acc-body-pad{padding-bottom:8px}
@media (min-width:761px){
  /* 桌面端默认全部展开，视觉等同于旧版标题+表格 */
  .acc > summary{cursor:default;pointer-events:none;font-size:20px}
  .acc > summary em{display:none}
}
@media (max-width:760px){
  .quick-facts{gap:5px}
  .quick-facts li{min-width:calc(50% - 3px)}
  .acc > summary{font-size:15.5px;padding:14px 0}
  .acc-wrap{padding:0}
  .pdp-meta{border-top:1px solid var(--line)}
  .pdp-body .acc[open] > *:not(summary){padding-bottom:6px}
  .spec-table{border-radius:10px}
  .pdp .pdp-buy{padding-bottom:2px}
}

/* ═══ 手机端页脚：浅色紧凑 + 折叠（不再是整块深色，也不丢内链）═══ */
@media (max-width:760px){
  .site-footer{background:#f7f8fb;color:var(--ink2);border-top:1px solid var(--line);margin-top:8px}
  .foot-grid{display:block;padding:16px 14px 8px;gap:0}
  .foot-logo{color:var(--ink);font-size:16px;margin-bottom:2px}
  .foot-desc{font-size:12.5px;color:var(--ink2);margin:0}
  .site-footer h4{display:none}
  .foot-acc{border-bottom:1px solid var(--line)}
  .foot-acc > summary{
    display:flex;align-items:center;gap:8px;cursor:pointer;list-style:none;
    padding:13px 2px;font-size:14px;font-weight:600;color:var(--ink)
  }
  .foot-acc > summary::-webkit-details-marker{display:none}
  .foot-acc .acc-arrow{width:15px;height:15px}
  .foot-acc .acc-arrow::before,.foot-acc .acc-arrow::after{background:var(--ink2)}
  .foot-acc[open] > summary .acc-arrow::after{opacity:0}
  .foot-acc > .foot-cols{display:grid;grid-template-columns:1fr 1fr;gap:4px 14px;padding:2px 0 12px}
  .foot-acc[open] > .foot-cols{animation:accIn .18s ease}
  .foot-acc ul{margin:0}
  .site-footer .foot-acc li{margin:0;font-size:13.5px}
  .site-footer .foot-acc li a{display:block;padding:7px 0;min-height:32px;color:var(--ink2)}
  .site-footer .foot-acc li a:hover{color:var(--brand);text-decoration:none}
  .foot-acc .foot-desc{padding:2px 0 8px}
  .nl-form{padding:2px 0 14px}
  .nl-form input{background:#fff;border:1px solid var(--line);color:var(--ink);height:44px;border-radius:9px}
  .nl-form button{height:44px;background:var(--brand);padding:0 16px}
  .foot-bottom{border-top:1px solid var(--line);padding:12px 14px 18px;font-size:11.5px;color:#8e99aa;gap:8px}
  .foot-bottom a{color:var(--ink2)}
  .pay-note{display:none}
}

/* ═══ 手机端页脚极简版：只留一行版权，并给底部导航让位（桌面端不受影响）═══ */
@media (max-width:760px){
  .site-footer .foot-grid{display:none}          /* 链接仍在 HTML 里，只是手机端不显示 */
  .site-footer .foot-bottom{
    display:block;justify-content:center;text-align:center;gap:4px;
    padding:14px 14px calc(14px + var(--tab-h) + var(--safe-b));
    font-size:11.5px;color:#8e99aa;border-top:0
  }
  .site-footer .foot-bottom .foot-links,
  .site-footer .foot-bottom .pay-note{display:none}
  main.wrap{padding-bottom:calc(var(--tab-h) + var(--safe-b) + 8px)}
}

/* 手机端首页政策入口条（页脚已收起，这里补回入口） */
@media (max-width:760px){
  .policy-strip{
    display:flex;gap:8px;overflow-x:auto;padding:12px 14px;margin:0 -14px 18px;
    background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    -webkit-overflow-scrolling:touch;scrollbar-width:none
  }
  .policy-strip::-webkit-scrollbar{display:none}
  .policy-strip a{
    flex:none;font-size:13px;color:var(--ink2);background:#fff;border:1px solid var(--line);
    border-radius:99px;padding:8px 14px;min-height:36px;display:inline-flex;align-items:center
  }
  .policy-strip a:active{border-color:var(--brand);color:var(--brand)}
}