:root{--brand:#16a34a;--brand-dark:#15803d;--brand-soft:#f0fdf4;--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--bg:#f8faf9;--card:#fff;--warn:#d97706;--bad:#dc2626;--radius:12px}
[hidden]{display:none!important}
*{box-sizing:border-box;margin:0;padding:0}
html,body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC",sans-serif;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.45}
a{color:var(--brand-dark);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}
/* header */
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.top .wrap{display:flex;align-items:center;gap:14px;height:64px}
.logo{font-weight:800;font-size:19px;color:var(--ink);letter-spacing:-.2px;white-space:nowrap}
.logo span{color:var(--brand)}
.logo:hover{text-decoration:none}
.search{flex:1;max-width:520px;position:relative}
.search input{width:100%;height:42px;border:1px solid var(--line);border-radius:999px;padding:0 16px 0 40px;font-size:15px;background:#f3f4f6;outline:none}
.search input:focus{background:#fff;border-color:var(--brand)}
.search svg{position:absolute;left:14px;top:12px;color:var(--muted)}
.nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav a{padding:8px 12px;border-radius:8px;color:var(--ink);font-weight:600;font-size:14px;white-space:nowrap}
.nav a:hover{background:#f3f4f6;text-decoration:none}
.cart-btn{background:var(--brand)!important;color:#fff!important;display:flex;align-items:center;gap:6px}
.cart-btn:hover{background:var(--brand-dark)!important}
.cart-btn b{background:#fff;color:var(--brand-dark);border-radius:999px;font-size:12px;min-width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;padding:0 6px}
.tierchip{font-size:12px;font-weight:700;background:#fef3c7;color:#92400e;border-radius:999px;padding:3px 10px}
/* flash */
.flash{margin:14px auto 0;padding:12px 16px;border-radius:10px;font-size:14px}
.flash.ok{background:var(--brand-soft);color:#166534;border:1px solid #bbf7d0}
.flash.err{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
/* banners */
.banners{margin-top:18px;display:grid;grid-auto-flow:column;grid-auto-columns:100%;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;border-radius:16px;scrollbar-width:none}
.banners::-webkit-scrollbar{display:none}
.banner{scroll-snap-align:start;position:relative;min-height:200px;border-radius:16px;overflow:hidden;background:linear-gradient(120deg,#14532d,#16a34a);color:#fff;display:flex;align-items:flex-end;padding:28px}
.banner.has-img{height:clamp(220px,34vw,440px);padding:0;justify-content:center;align-items:center;background:#111}
.banner .bbg{position:absolute;inset:-20px;background-size:cover;background-position:center;filter:blur(22px) brightness(.75)}
.banner .bimg{position:relative;max-width:100%;max-height:100%;object-fit:contain;z-index:1}
.banner.has-img .txt{position:absolute;left:0;right:0;bottom:0;padding:24px 28px;z-index:2;max-width:none;background:linear-gradient(0deg,rgba(0,0,0,.6),rgba(0,0,0,0))}
.banner .txt{position:relative;z-index:1;max-width:620px}
.banner h2{font-size:28px;line-height:1.15;letter-spacing:-.4px}
.banner p{margin-top:6px;font-size:16px;opacity:.92}
.banner .go{display:inline-block;margin-top:12px;background:#fff;color:var(--ink);font-weight:700;padding:8px 16px;border-radius:999px;font-size:14px}
.dots{display:flex;gap:6px;justify-content:center;margin-top:8px}
.dots i{width:7px;height:7px;border-radius:50%;background:#d1d5db}
.dots i.on{background:var(--brand)}
/* promo strip */
.strip{margin-top:16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.strip .box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;font-size:14px}
.strip .box b{display:block;font-size:15px;margin-bottom:2px}
.bar{height:8px;background:#f3f4f6;border-radius:999px;margin-top:8px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,#f59e0b,#d97706);border-radius:999px}
/* layout */
.shop{display:grid;grid-template-columns:220px 1fr;gap:24px;margin:22px auto 60px}
.side{position:sticky;top:84px;align-self:start}
.side h4{font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:4px 0 8px}
.side a{display:flex;justify-content:space-between;padding:8px 10px;border-radius:8px;color:var(--ink);font-size:14px}
.side a span{color:var(--muted);font-size:12px}
.side a:hover,.side a.on{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none}
.sec{margin-bottom:30px}
.sec h3{font-size:20px;margin-bottom:12px;letter-spacing:-.2px;display:flex;align-items:baseline;gap:8px}
.sec h3 small{font-size:13px;color:var(--muted);font-weight:500}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.pc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .15s}
.pc:hover{box-shadow:0 6px 18px rgba(0,0,0,.06)}
.pc .img{aspect-ratio:4/3;background:#f3f4f6;display:flex;align-items:center;justify-content:center;position:relative}
.pc .img img{width:100%;height:100%;object-fit:contain;background:#fff}
.pc .img .ph{font-size:34px;opacity:.35}
.pc .new{position:absolute;top:8px;left:8px;background:#ef4444;color:#fff;font-size:11px;font-weight:800;padding:2px 8px;border-radius:999px;letter-spacing:.4px}
.pc .body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:3px;flex:1}
.pc .code{font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--brand-dark)}
.pc .name{font-weight:650;font-size:14px;line-height:1.3}
.pc .cn{font-size:12px;color:var(--muted)}
.pc .meta{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:6px;font-size:12px;color:var(--muted)}
.lvl{font-weight:700;font-size:11px;padding:2px 8px;border-radius:999px}
.lvl.in{background:#dcfce7;color:#166534}.lvl.low{background:#fef3c7;color:#92400e}.lvl.out{background:#fee2e2;color:#991b1b}
.price{font-size:18px;font-weight:800;margin-top:4px}
.price s{font-size:13px;color:var(--muted);font-weight:500;margin-left:4px}
.price.na{font-size:13px;font-weight:600;color:var(--muted)}
.qty{display:flex;align-items:center;gap:6px;margin-top:8px}
.qty button{width:34px;height:34px;border:1px solid var(--line);background:#fff;border-radius:8px;font-size:18px;cursor:pointer;color:var(--ink)}
.qty button:hover{border-color:var(--brand)}
.qty input{width:48px;height:34px;text-align:center;border:1px solid var(--line);border-radius:8px;font-size:15px}
.qty .add{flex:1;width:auto;background:var(--brand);color:#fff;border-color:var(--brand);font-size:14px;font-weight:700}
.qty .add:hover{background:var(--brand-dark)}
.pc.oos{opacity:.55}
.pc.oos button{cursor:not-allowed}
.empty{padding:40px;text-align:center;color:var(--muted)}
/* forms & cards */
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.narrow{max-width:460px;margin:40px auto}
.mid{max-width:760px;margin:30px auto 60px}
h1{font-size:26px;letter-spacing:-.4px;margin-bottom:6px}
.sub{color:var(--muted);margin-bottom:18px}
label{display:block;font-size:13px;font-weight:650;margin:12px 0 5px}
input[type=text],input[type=email],input[type=password],input[type=tel],select,textarea{width:100%;height:42px;border:1px solid var(--line);border-radius:10px;padding:0 12px;font-size:15px;font-family:inherit;background:#fff}
textarea{height:80px;padding:10px 12px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row3{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;background:var(--brand);color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:700;cursor:pointer;text-decoration:none!important}
.btn:hover{background:var(--brand-dark)}
.btn.block{width:100%}
.btn.ghost{background:#fff;color:var(--brand-dark);border:1px solid var(--brand)}
.btn:disabled{background:#9ca3af;cursor:not-allowed}
.err{background:#fef2f2;color:#991b1b;border:1px solid #fecaca;padding:10px 14px;border-radius:10px;font-size:14px;margin-bottom:10px}
.hint{font-size:13px;color:var(--muted);margin-top:6px}
.file{border:1.5px dashed #cbd5e1;border-radius:10px;padding:12px;background:#f8fafc}
.file input{font-size:14px}
/* account */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:18px 0}
.kpi{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.kpi .k{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.kpi .v{font-size:20px;font-weight:800;margin-top:4px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.st{font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;background:#eef2ff;color:#3730a3}
.st.done,.st.approved{background:#dcfce7;color:#166534}.st.cancelled,.st.rejected{background:#fee2e2;color:#991b1b}.st.pending{background:#fef3c7;color:#92400e}.st.shipped{background:#e0f2fe;color:#075985}
/* cart */
.cart{display:grid;grid-template-columns:1fr 360px;gap:22px;margin:24px auto 60px}
.line{display:grid;grid-template-columns:64px 1fr auto auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.line img,.line .ph{width:64px;height:48px;object-fit:contain;background:#f3f4f6;border-radius:8px}
.line .lt{font-weight:700;min-width:80px;text-align:right}
.sum{position:sticky;top:84px;align-self:start}
.sum .r{display:flex;justify-content:space-between;margin:6px 0}
.sum .total{font-size:20px;font-weight:800;border-top:1px solid var(--line);padding-top:10px;margin-top:10px}
.opt{display:flex;gap:10px;margin:10px 0}
.opt label{flex:1;margin:0;border:1.5px solid var(--line);border-radius:12px;padding:12px;cursor:pointer;font-weight:600}
.opt label small{display:block;font-weight:400;color:var(--muted);font-size:12px;margin-top:2px}
.opt input{margin-right:6px}
.opt label.on{border-color:var(--brand);background:var(--brand-soft)}
.opt label.dis{opacity:.5;cursor:not-allowed}
.notice{font-size:13px;border-radius:10px;padding:10px 12px;margin:8px 0;background:#fffbeb;color:#92400e;border:1px solid #fde68a}
.notice.ok{background:var(--brand-soft);color:#166534;border-color:#bbf7d0}
.foot{border-top:1px solid var(--line);background:#fff;padding:24px 0;color:var(--muted);font-size:13px}
@media (max-width:860px){
  .shop{grid-template-columns:1fr}
  .side{position:static;display:flex;overflow-x:auto;gap:6px}
  .side h4{display:none}
  .side a{white-space:nowrap;background:#fff;border:1px solid var(--line)}
  .side a span{margin-left:6px}
  .cart{grid-template-columns:1fr}
  .top .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:10px}
  .search{order:3;max-width:none;flex-basis:100%}
  .nav a.hide-m{display:none}
  .grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .banner h2{font-size:22px}
  .row2,.row3{grid-template-columns:1fr}
}
/* 产品详情 + 多图 */
.pc a.img{display:flex;color:inherit}
.pc a.name{color:var(--ink)}
.pc .nimg{position:absolute;right:8px;bottom:8px;background:rgba(17,24,39,.72);color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px}
.pdp{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:32px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.gmain{position:relative;aspect-ratio:4/3;background:#f8faf9;border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.gmain img{width:100%;height:100%;object-fit:contain}
.gmain .ph{font-size:60px;opacity:.3}
.gnav{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;border:none;background:rgba(255,255,255,.9);font-size:26px;line-height:1;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.gnav.prev{left:10px}.gnav.next{right:10px}
.thumbs{display:flex;gap:8px;margin-top:10px;overflow-x:auto}
.thumbs button{flex:0 0 76px;height:58px;border:2px solid transparent;border-radius:8px;padding:0;background:#f3f4f6;cursor:pointer;overflow:hidden}
.thumbs button.on{border-color:var(--brand)}
.thumbs img{width:100%;height:100%;object-fit:cover}
@media (max-width:860px){.pdp{grid-template-columns:1fr;padding:14px;gap:16px}}
/* 首页介绍（SEO） */
.hero{margin-top:18px}
.hero h1{font-size:24px;letter-spacing:-.3px;margin-bottom:4px}
.hero p{color:var(--muted);max-width:820px;font-size:15px}
@media (max-width:860px){.hero h1{font-size:20px}}