*{box-sizing:border-box}body{margin:0;font-family:system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:#111827;background:#fff}
.wrap{max-width:1100px;margin:0 auto;padding:16px}
.site-header{border-bottom:1px solid rgba(17,24,39,.1);background:#fff;position:sticky;top:0;z-index:20}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{font-weight:800;text-decoration:none;color:#111827}
.nav a{margin-left:14px;text-decoration:none;color:#111827;opacity:.9}
.nav a:hover{opacity:1}
.content{padding:20px 16px}
.h1{font-size:28px;font-weight:800;margin:8px 0 12px}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.product-card{display:flex;flex-direction:column;border:1px solid rgba(17,24,39,.1);border-radius:12px;overflow:hidden;text-decoration:none;color:inherit;background:#fff}
.product-card img{width:100%;height:160px;object-fit:cover;background:#f3f4f6}
.pc-body{padding:10px}
.pc-name{font-weight:600;margin-bottom:6px}
.pc-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#6b7280}
.pc-price{color:#111827;font-weight:700}
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.product-detail .pd-media img{width:100%;border:1px solid rgba(17,24,39,.1);border-radius:12px}
.price{font-size:22px;font-weight:800;margin:10px 0}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:10px;background:#111827;color:#fff;border:1px solid rgba(255,255,255,.12);text-decoration:none;cursor:pointer}
.btn:hover{filter:brightness(1.06)}
.btn-sm{padding:6px 10px;border-radius:8px;font-size:13px}
.btn.ghost{background:#fff;color:#111827;border:1px solid rgba(17,24,39,.16)}
.btn.danger{background:#b91c1c}
.link{background:none;border:none;color:#111827;text-decoration:underline;cursor:pointer;padding:0}
.link.danger{color:#b91c1c}.link.good{color:#166534}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stack{display:flex;flex-direction:column;gap:8px}
label{font-size:14px;color:#111827;opacity:.9}
input,textarea,select{width:100%;padding:8px 10px;border:1px solid rgba(17,24,39,.2);border-radius:8px}
.error{color:#b91c1c}.good{color:#166534}.muted{color:#6b7280}
.list{width:100%;border-collapse:collapse}
.list th,.list td{border-bottom:1px solid rgba(17,24,39,.1);padding:8px;text-align:left}
.nowrap{white-space:nowrap}
.cart{width:100%;border-collapse:collapse}
.cart th,.cart td{border-bottom:1px solid rgba(17,24,39,.1);padding:8px;text-align:left}
.site-footer{border-top:1px solid rgba(17,24,39,.1);margin-top:24px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.cat-card{display:block;border:1px solid rgba(17,24,39,.1);border-radius:12px;padding:14px;text-decoration:none;color:#111827;background:#fff}
@media (max-width:980px){.product-detail{grid-template-columns:1fr}}