/* 商品目录网站 — 顾客端样式（Mercury 风格：白顶栏 + 品牌分区 + 方图网格） */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#222;background:#f7f3ee;background-image:radial-gradient(#e8ddc8 1px,transparent 1px),radial-gradient(#e8ddc8 1px,transparent 1px);background-size:28px 28px;background-position:0 0,14px 14px}
.hidden{display:none!important}
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid #eee;padding:10px 16px}
.top-left,.top-right{display:flex;gap:8px;align-items:center}
.store-name{font-weight:800;font-size:32px;letter-spacing:1px;display:flex;align-items:center}
.top-btn,.lang-btn{border:1px solid #ddd;background:#fff;border-radius:20px;padding:6px 12px;cursor:pointer;font-size:14px}
.lang-btn{background:#111;color:#fff;border-color:#111}
.wa-btn{display:inline-block;background:#25d366;color:#fff;text-decoration:none;border-radius:20px;padding:7px 14px;font-size:14px;font-weight:600}
.wa-btn.big{padding:10px 22px;font-size:16px}
.search-bar{display:flex;gap:8px;padding:10px 16px;border-bottom:1px solid #eee}
.search-wrap{position:sticky;top:60px;z-index:55;background:#fff}
#brandSections{scroll-margin-top:130px}
.search-suggest{position:absolute;left:0;right:0;top:100%;background:#fff;border:1px solid #ddd;border-top:none;border-radius:0 0 12px 12px;box-shadow:0 10px 24px rgba(0,0,0,.14);z-index:60;max-height:340px;overflow:auto}
.suggest-item{display:flex;gap:10px;align-items:center;padding:9px 14px;cursor:pointer}
.suggest-item:hover{background:#f7f3ee}
.suggest-item img{width:46px;height:46px;object-fit:cover;border-radius:6px;flex:none}
.suggest-item .s-name{font-size:14px;line-height:1.3}
.suggest-item .s-code{font-size:12px;color:#999;margin-top:2px}
.search-bar input{flex:1;padding:10px;border:1px solid #ddd;border-radius:8px;font-size:15px}
.search-bar button{border:1px solid #ddd;background:#fff;border-radius:8px;padding:0 14px;cursor:pointer}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:60}
.drawer{position:fixed;top:0;left:0;bottom:0;width:300px;max-width:85vw;background:#fff;z-index:70;transform:translateX(-100%);transition:transform .25s;padding:16px;overflow:auto}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;justify-content:space-between;font-weight:700;font-size:18px;margin-bottom:12px}
.drawer-head button,.modal-close{border:none;background:none;font-size:18px;cursor:pointer}
.drawer input{width:100%;padding:9px;border:1px solid #ddd;border-radius:8px;margin-bottom:12px}
.drawer-cats button{display:block;width:100%;text-align:left;border:none;background:#f6f6f6;border-radius:8px;padding:10px;margin-bottom:8px;cursor:pointer;font-size:15px}
.drawer-cats button.active{background:#111;color:#fff}
.banner{position:relative}
.banner img{width:100%;height:340px;object-fit:cover;display:block}
.banner-text{position:absolute;left:24px;bottom:24px;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.6)}
.banner-text h1{font-size:28px}
main{max-width:1280px;margin:0 auto;padding:4px 16px 24px}
.brand-section h2{text-align:center;margin:18px 0 12px;font-size:22px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{cursor:pointer;background:#fff;border-radius:10px;padding:8px;box-shadow:0 2px 8px rgba(0,0,0,.06);position:relative}
.share-btn{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;border:none;background:rgba(255,255,255,.75);box-shadow:0 1px 6px rgba(0,0,0,.2);cursor:pointer;z-index:2;display:flex;align-items:center;justify-content:center;opacity:.8}
.share-btn:hover{opacity:1;background:#111}
.share-btn svg{width:19px;height:19px;fill:#111}
.share-btn:hover{background:#111}
.share-btn:hover svg{fill:#fff}
.share-btn-big{flex:1;border:1px solid #ddd;background:#fff;border-radius:16px;padding:10px 4px;font-size:14px;cursor:pointer;text-align:center;text-decoration:none;color:#222}
.d-actions{display:flex;gap:8px}
.share-box{position:relative;background:#fff;border-radius:16px;padding:24px 20px;width:min(480px,92vw);margin:20vh auto 0}
.share-title{text-align:center;font-size:17px;margin:0 0 18px}
.share-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px 8px}
.sh-item{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:12px;color:#333;text-decoration:none;background:none;border:none;cursor:pointer;padding:0}
.sh-ico{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;font-weight:700}
.sh-ico-img{width:52px;height:52px;border-radius:50%;background:#fff;box-shadow:0 1px 6px rgba(0,0,0,.12);padding:9px;object-fit:contain}
.card img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:8px;background:#f4f4f4}
.card .name{text-align:center;font-size:16px;font-weight:700;margin-top:6px;line-height:1.4}
.card .sold{text-align:center;font-size:12px;color:#999;margin-top:2px}
.card .actions{display:flex;gap:6px;margin-top:8px}
.card .actions button,.card .actions a{flex:1;border:1px solid #ddd;background:#fff;border-radius:16px;padding:6px 4px;font-size:12px;font-weight:700;cursor:pointer;text-align:center;text-decoration:none;color:#222}
.card .actions a{background:#25d366;color:#fff;border-color:#25d366;font-weight:600}
.how{margin-top:36px;background:#f8f8f8;border-radius:12px;padding:20px}
.how h2{margin-bottom:10px}
.how ol{padding-left:20px;line-height:1.9}
footer{text-align:center;padding:28px 16px;border-top:1px solid #eee;color:#666}
footer a{color:#25d366}
.float-wa{position:fixed;right:16px;bottom:16px;background:#25d366;color:#fff;text-decoration:none;border-radius:24px;padding:12px 18px;font-weight:600;box-shadow:0 4px 14px rgba(0,0,0,.2);z-index:40}
.to-top{position:fixed;right:16px;bottom:78px;width:44px;height:44px;border-radius:50%;background:#111;color:#fff;border:none;font-size:20px;line-height:1;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.25);z-index:40;display:none}
.to-top.show{display:block}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:80;display:flex;align-items:center;justify-content:center;padding:16px}
.modal-box{background:#fff;border-radius:12px;max-width:520px;width:100%;padding:18px;position:relative;max-height:92vh;overflow:auto}
.modal-close{position:absolute;right:12px;top:10px;z-index:2;background:#fff;border-radius:50%;width:32px;height:32px}
.gallery{position:relative}
.gallery img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:8px;background:#f4f4f4;touch-action:pan-y}
.gal-arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.9);border:none;border-radius:50%;width:36px;height:36px;font-size:22px;cursor:pointer}
#galPrev{left:8px}#galNext{right:8px}
.gal-count{position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.6);color:#fff;border-radius:12px;padding:2px 8px;font-size:12px}
.thumbs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.thumbs img{width:56px;height:56px;object-fit:cover;border-radius:6px;cursor:pointer;border:2px solid transparent}
.thumbs img.active{border-color:#25d366}
.d-meta{color:#888;font-size:13px;margin:6px 0 14px}
.var-colors{color:#888;font-size:12px;text-align:center;margin-top:4px}
.variants{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin:0 0 12px}
.variants .var-label{font-size:13px;color:#888}
.variants button{border:1px solid #ddd;background:#fff;border-radius:14px;padding:5px 12px;font-size:13px;cursor:pointer}
.variants button.active{background:#222;color:#fff;border-color:#222}
.d-actions{display:flex;gap:10px}
@media(max-width:900px){.grid{grid-template-columns:repeat(3,1fr)}.banner img{height:220px}}
@media(max-width:520px){.search-wrap{top:52px}.grid{grid-template-columns:repeat(2,1fr)}.topbar{padding:8px 10px;gap:6px}.top-left,.top-right{gap:4px}.store-name{font-size:17px;white-space:nowrap;letter-spacing:0}.store-logo{height:36px;width:36px;margin-right:6px}.top-btn,.lang-btn{padding:5px 8px;font-size:12px}.wa-btn{padding:6px 10px;font-size:12px}.top-btn span{display:none}.banner-text h1{font-size:20px}.banner-text{left:14px;bottom:14px}}

.price{font-weight:700;margin:4px 0}
.d-price{font-weight:700;font-size:18px;margin:6px 0}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:1280px;margin:16px auto 0;padding:0 16px}
.feature{background:#fff;border:1px solid #eee;border-radius:12px;padding:14px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.feature b{display:block;font-size:15px;margin:6px 0 2px}
.feature span{font-size:13px;color:#888}
.f-ico{font-size:26px}
@media(max-width:900px){.features{grid-template-columns:repeat(2,1fr)}}
.brands{max-width:1280px;margin:20px auto 0;padding:0 16px;text-align:center}
.brands h2{font-size:22px;margin-bottom:14px}
.brand-logos{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.brand-logo-btn{background:#fff;border:1px solid #eee;border-radius:12px;padding:10px 8px;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.05);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:130px}
.brand-logo-btn img{max-width:92%;max-height:104px;object-fit:contain}
.bl-small{display:none}
.brand-logo-btn:hover{border-color:#c9a24b}
.brand-logo-btn.active{border:2px solid #111;background:#fff;color:#111}
.brand-logo-btn.active .bl-small{color:#111;font-weight:700}
.bl-big{font-family:Georgia,'Times New Roman',serif;font-weight:700;font-size:22px;letter-spacing:2px}
.bl-small{font-size:11px;letter-spacing:3px;color:#999}
.clear-brand{margin-top:12px;border:1px solid #ddd;background:#fff;border-radius:20px;padding:7px 16px;cursor:pointer;font-size:14px}
@media(max-width:900px){.brand-logos{grid-template-columns:repeat(3,1fr)}}
@media(max-width:520px){.brand-logos{grid-template-columns:repeat(2,1fr)}.bl-big{font-size:18px}}
.store-logo{height:64px;width:64px;vertical-align:middle;margin-right:12px;border-radius:50%;object-fit:cover;border:2px solid #c9a24b}
.banner img{width:100%;height:300px;object-fit:cover}