/* 06 commerce — 冷白 / 砖红强调 / 大图网格 / 转化路径 */
:root{
  --paper:#f8f8f5; --card:#ffffff; --sunk:#eeeeea; --sunk2:#e2e2dc;
  --ink:#191917; --ink2:#4e4e49; --ink3:#8b8b84;
  --line:rgba(25,25,23,.11); --line2:rgba(25,25,23,.06);
  --accent:oklch(.55 .16 28); --accent-soft:oklch(.95 .03 28);
  --ok:oklch(.55 .09 160);
  --ease:cubic-bezier(.22,.61,.36,1);
  --max:1280px;
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);
  font:400 15px/1.62 ui-sans-serif,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,figure{margin:0}
ul{padding:0;list-style:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:clamp(16px,4vw,48px)}
.mono{font-family:ui-monospace,"SF Mono",Consolas,monospace;font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink3)}
.num{font-variant-numeric:tabular-nums}

/* 公告 + 头 */
.ann{background:var(--ink);color:#f2f2ee;font-size:12.5px;letter-spacing:.02em}
.ann .wrap{height:34px;display:flex;align-items:center;justify-content:center;gap:8px}
.ann b{color:#fff;font-weight:500}
header{position:sticky;top:0;z-index:50;background:rgba(248,248,245,.9);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line2)}
.hd{display:flex;align-items:center;gap:28px;height:66px}
.logo{font-weight:700;font-size:17px;letter-spacing:-.02em}
.logo em{font-style:normal;color:var(--accent)}
nav{display:flex;gap:24px}
nav a{font-size:14px;color:var(--ink2);padding:4px 0;position:relative}
nav a[aria-current],nav a:hover{color:var(--ink)}
nav a[aria-current]::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--accent)}
.hd-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.icon{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;transition:background .18s;position:relative}
.icon:hover{background:var(--sunk)}
.icon svg{width:19px;height:19px;stroke:var(--ink);fill:none;stroke-width:1.5}
.icon .dot{position:absolute;top:7px;right:7px;width:15px;height:15px;border-radius:50%;background:var(--accent);
  color:#fff;font-size:9.5px;display:grid;place-items:center;font-weight:600}
@media(max-width:900px){nav{display:none}}

/* 页头 */
.page-head{padding-block:clamp(28px,4vw,48px) 20px}
.page-head h1{font-size:clamp(1.6rem,3.2vw,2.3rem);line-height:1.15;letter-spacing:-.026em;font-weight:600}
.page-head p{color:var(--ink3);font-size:14px;margin-top:10px;max-width:60ch}
.crumb{display:flex;gap:7px;font-size:12.5px;color:var(--ink3);margin-bottom:14px}
.crumb a:hover{color:var(--accent)}

/* 筛选条 */
.filters{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-block:16px;border-block:1px solid var(--line2);
  margin-bottom:clamp(20px,3vw,32px);position:sticky;top:66px;background:var(--paper);z-index:30}
.chip{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 13px;border:1px solid var(--line);
  border-radius:999px;font-size:12.5px;color:var(--ink2);background:var(--card);transition:.16s;cursor:pointer}
.chip:hover{border-color:rgba(25,25,23,.28);color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.filters .sort{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink3)}
.filters select{border:1px solid var(--line);border-radius:999px;background:var(--card);color:var(--ink);
  font:inherit;font-size:12.5px;height:32px;padding:0 10px}

/* 商品网格 */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(12px,1.6vw,22px);padding-bottom:clamp(36px,6vw,72px)}
@media(max-width:1100px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:780px){.grid{grid-template-columns:repeat(2,1fr);gap:12px}}
@media(max-width:440px){.grid{grid-template-columns:1fr}}
.card{display:grid;gap:0;background:transparent}
.ph{position:relative;aspect-ratio:4/5;background:var(--sunk);overflow:hidden;display:block}
.ph i{position:absolute;inset:0;display:block;transition:opacity .4s var(--ease),transform .6s var(--ease)}
.ph i.a{background:linear-gradient(155deg,#e8e6de,#d6d4cb 60%,#c9c7bd)}
.ph i.b{background:linear-gradient(155deg,#dedbd2,#c6c3b8 55%,#b4b1a6);opacity:0;transform:scale(1.04)}
.card:hover .ph i.b{opacity:1;transform:none}
.card:hover .ph i.a{opacity:0}
.badge{position:absolute;left:10px;top:10px;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;
  background:var(--card);color:var(--ink);padding:3px 7px;z-index:2}
.badge.sale{background:var(--accent);color:#fff}
.wish{pointer-events:none;position:absolute;right:8px;top:8px;width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.85);
  display:grid;place-items:center;border:0;cursor:pointer;opacity:0;transition:.2s;z-index:2}
.card:hover .wish,.wish:focus-visible{opacity:1}
.wish svg{width:16px;height:16px;stroke:var(--ink);fill:none;stroke-width:1.5}
.wish[aria-pressed="true"] svg{fill:var(--accent);stroke:var(--accent)}
.card .info{padding-top:12px;display:grid;gap:4px}
.card .info h3{font-size:13.5px;font-weight:500;line-height:1.45;letter-spacing:-.004em}
.card .info .sub{font-size:11.5px;color:var(--ink3)}
.card .price{display:flex;align-items:baseline;gap:8px;margin-top:2px;font-variant-numeric:tabular-nums}
.card .price b{font-size:14px;font-weight:600}
.card .price s{font-size:12px;color:var(--ink3)}
.card .swatches{display:flex;gap:5px;margin-top:6px}
.card .swatches i{width:13px;height:13px;border-radius:50%;border:1px solid var(--line);display:block}

/* 详情页 */
.pdp{display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(24px,4vw,60px);padding-block:clamp(24px,4vw,48px)}
@media(max-width:900px){.pdp{grid-template-columns:1fr}}
.gallery{display:grid;gap:10px}
.main-img{aspect-ratio:1;background:var(--sunk);position:relative;overflow:hidden}
.main-img i{position:absolute;inset:0;background:linear-gradient(150deg,#e9e7df,#cdcabf 62%,#b8b5a9)}
.thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.thumbs button{aspect-ratio:1;background:var(--sunk);border:1px solid transparent;cursor:pointer;padding:0}
.thumbs button[aria-current]{border-color:var(--ink)}
.buy{display:grid;gap:18px;align-content:start}
.buy h1{font-size:clamp(1.4rem,2.6vw,1.95rem);line-height:1.22;letter-spacing:-.022em;font-weight:600}
.rating{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink3)}
.stars{display:flex;gap:2px;color:var(--accent)}
.stars svg{width:13px;height:13px;fill:currentColor}
.price-lg{display:flex;align-items:baseline;gap:10px}
.price-lg b{font-size:clamp(1.5rem,2.6vw,1.9rem);font-weight:620;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.price-lg s{color:var(--ink3);font-size:14px}
.price-lg .save{font-size:11.5px;background:var(--accent-soft);color:var(--accent);padding:3px 7px;border-radius:2px}
.opt-group{display:grid;gap:8px}
.opt-group .lbl{font-size:12px;color:var(--ink2);display:flex;justify-content:space-between}
.opt-group .lbl span{color:var(--ink3)}
.opts{display:flex;gap:8px;flex-wrap:wrap}
.opt{min-width:46px;height:38px;padding:0 13px;border:1px solid var(--line);background:var(--card);
  font:inherit;font-size:13px;cursor:pointer;border-radius:2px;transition:.16s;color:var(--ink)}
.opt:hover{border-color:rgba(25,25,23,.3)}
.opt[aria-pressed="true"]{border-color:var(--ink);background:var(--ink);color:#fff}
.opt.color{width:34px;min-width:34px;height:34px;padding:0;border-radius:50%}
.stock{font-size:12.5px;color:var(--ok);display:flex;align-items:center;gap:6px}
.stock::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok)}
.actions{display:flex;gap:10px;margin-top:4px}
.qty{display:flex;align-items:center;border:1px solid var(--line);background:var(--card);height:52px}
.qty button{width:42px;height:100%;border:0;background:transparent;cursor:pointer;font-size:17px;color:var(--ink2)}
.qty button:hover{color:var(--ink)}
.qty input{width:44px;height:100%;border:0;background:transparent;text-align:center;font:inherit;color:var(--ink);
  font-variant-numeric:tabular-nums}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;
  border:1px solid transparent;border-radius:2px;font:inherit;font-size:14px;font-weight:550;cursor:pointer;
  transition:.18s}
.btn-p{background:var(--accent);color:#fff}
.btn-p:hover{background:oklch(.5 .16 28)}
.btn-d{background:var(--ink);color:#fff}
.btn-d:hover{background:#000}
.btn-g{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-g:hover{background:var(--sunk)}
.btn-block{flex:1;height:52px;font-size:14.5px}
.assure{display:grid;gap:9px;padding-top:18px;border-top:1px solid var(--line2);font-size:12.5px;color:var(--ink2)}
.assure div{display:flex;gap:9px;align-items:flex-start}
.assure svg{width:15px;height:15px;stroke:var(--accent);fill:none;stroke-width:1.6;flex:none;margin-top:2px}
details{border-top:1px solid var(--line2);padding-top:12px}
details summary{cursor:pointer;font-size:13px;font-weight:500;padding:6px 0;list-style:none;display:flex;justify-content:space-between}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";color:var(--ink3)}
details[open] summary::after{content:"−"}
details .body{font-size:12.5px;color:var(--ink2);line-height:1.75;padding-bottom:8px}
.spec-dl{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;font-size:12.5px;padding:6px 0 12px}
.spec-dl dt{color:var(--ink3)}
.spec-dl dd{margin:0;color:var(--ink2);font-variant-numeric:tabular-nums}

/* 结算 */
.steps{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink3);padding-block:20px;
  border-bottom:1px solid var(--line2)}
.steps b{color:var(--ink);font-weight:500}
.steps .n{width:19px;height:19px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;
  font-size:10.5px;margin-right:6px}
.steps .done .n{background:var(--ink);color:#fff;border-color:var(--ink)}
.steps .now .n{background:var(--accent);color:#fff;border-color:var(--accent)}
.steps .sep{flex:1;height:1px;background:var(--line2);min-width:14px}
.cart{display:grid;grid-template-columns:1.55fr .45fr;gap:clamp(20px,3.4vw,44px);padding-block:clamp(24px,4vw,40px)}
@media(max-width:920px){.cart{grid-template-columns:1fr}}
.citem{display:grid;grid-template-columns:96px 1fr auto;gap:16px;padding-block:18px;border-bottom:1px solid var(--line2)}
.citem .ph{aspect-ratio:4/5}
.citem h3{font-size:14px;font-weight:500}
.citem .meta{font-size:12px;color:var(--ink3);margin-top:4px}
.citem .ops{display:flex;align-items:center;gap:14px;margin-top:12px;font-size:12.5px}
.citem .ops a{color:var(--ink3);border-bottom:1px solid transparent}
.citem .ops a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.citem .qty{height:32px}
.citem .qty button{width:30px;font-size:14px}
.citem .qty input{width:34px;font-size:12.5px}
.citem .p{text-align:right;font-variant-numeric:tabular-nums;font-size:14px;font-weight:550}
.citem .p small{display:block;font-size:11.5px;font-weight:400;color:var(--ink3);margin-top:2px}
.summary{align-self:start;border:1px solid var(--line);background:var(--card);padding:20px;position:sticky;top:92px}
.summary h3{font-size:13px;font-weight:600;margin-bottom:14px}
.srow{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink2);padding-block:7px;
  font-variant-numeric:tabular-nums}
.srow.total{border-top:1px solid var(--line);margin-top:10px;padding-top:14px;font-size:15px;color:var(--ink);font-weight:600}
.promo{display:flex;gap:6px;margin:12px 0}
.promo input{flex:1;height:36px;border:1px solid var(--line);background:var(--paper);font:inherit;font-size:12.5px;
  padding:0 10px;border-radius:2px;color:var(--ink)}
.promo input:focus{outline:none;border-color:var(--accent)}
.promo button{height:36px;padding:0 12px;border:1px solid var(--line);background:transparent;font:inherit;
  font-size:12.5px;cursor:pointer;border-radius:2px}
.promo button:hover{background:var(--sunk)}
.pay{width:100%;margin-top:8px}
.trust-row{display:flex;justify-content:center;gap:12px;margin-top:14px;font-size:10.5px;color:var(--ink3);flex-wrap:wrap}

/* 页脚 */
footer{border-top:1px solid var(--line);padding-block:clamp(32px,4vw,52px) 24px;font-size:12.5px}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}
@media(max-width:820px){.foot{grid-template-columns:1fr 1fr}}
footer h4{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink3);margin-bottom:11px}
footer li+li{margin-top:7px}
footer a{color:var(--ink2)}
footer a:hover{color:var(--accent)}
.foot-base{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:30px;padding-top:16px;
  border-top:1px solid var(--line2);color:var(--ink3);font-size:11.5px}

:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}