:root{--navy:#14213d;--blue:#204d98;--yellow:#ffd500;--orange:#ff6200;--line:#dfe5ee;--muted:#667085;--bg:#f6f8fb}.catalog-body{font-family:Arial,sans-serif;margin:0;background:var(--bg);color:var(--navy)}.catalog-header{display:flex;align-items:center;justify-content:space-between;padding:14px 5%;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.catalog-header a{text-decoration:none;color:var(--navy);font-weight:750}.catalog-header nav{display:flex;gap:18px;align-items:center}.catalog-logo{font-size:22px}.catalog-logo span{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--yellow),var(--orange));margin-right:9px}.catalog-container{width:min(1240px,94%);margin:24px auto}.catalog-search{background:#fff;border:1px solid var(--line);border-radius:17px;padding:18px;display:grid;grid-template-columns:1fr 220px 220px auto;gap:10px}.catalog-search input,.catalog-search select,.seller-product-form input,.seller-product-form select,.seller-product-form textarea{width:100%;box-sizing:border-box;border:1px solid #d4dce8;border-radius:11px;padding:12px;background:#fff}.catalog-search button,.catalog-btn{border:0;border-radius:11px;padding:12px 17px;background:var(--navy);color:#fff;text-decoration:none;font-weight:800;cursor:pointer}.catalog-layout{display:grid;grid-template-columns:240px 1fr;gap:18px;margin-top:18px}.catalog-filter,.product-panel,.seller-product-panel{background:#fff;border:1px solid var(--line);border-radius:17px;padding:18px}.catalog-products{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.product-tile{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;min-width:0}.product-tile img,.product-image-placeholder{width:100%;aspect-ratio:1;object-fit:cover;border-radius:11px;background:#edf1f6}.product-image-placeholder{display:grid;place-items:center;font-size:44px}.product-tile a{text-decoration:none;color:var(--navy)}.product-tile h3{font-size:15px;line-height:1.35}.product-tile small{display:block;color:var(--muted);margin:6px 0}.product-price{font-size:18px;font-weight:900}.product-detail{display:grid;grid-template-columns:minmax(300px,1fr) 1fr;gap:28px}.product-main-image{width:100%;aspect-ratio:1;object-fit:contain;background:#fff;border-radius:18px;border:1px solid var(--line)}.product-info{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px}.product-info h1{margin-top:0}.product-info .price{font-size:30px;font-weight:900}.product-specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.product-specs div{border:1px solid var(--line);padding:11px;border-radius:10px}.product-specs span,.product-specs strong{display:block}.product-specs span{font-size:11px;color:var(--muted)}.seller-product-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.seller-product-form label{display:flex;flex-direction:column;gap:7px;font-weight:750}.seller-product-form label.full{grid-column:1/-1}.seller-product-form textarea{min-height:120px}.seller-toolbar{display:flex;gap:10px;justify-content:space-between;align-items:center;margin-bottom:16px}.seller-table{width:100%;border-collapse:collapse}.seller-table th,.seller-table td{text-align:left;border-bottom:1px solid var(--line);padding:11px;font-size:13px}.notice{padding:13px 15px;border-radius:12px;margin-bottom:14px}.notice.success{background:#e7f8f0;color:#087454}.notice.error{background:#fff0f2;color:#a32e42}.notice.warning{background:#fff8db;color:#7a5b00}@media(max-width:1000px){.catalog-products{grid-template-columns:repeat(3,minmax(0,1fr))}.catalog-search{grid-template-columns:1fr 1fr}.catalog-layout{grid-template-columns:1fr}.catalog-filter{display:none}}@media(max-width:720px){.catalog-products{grid-template-columns:repeat(2,minmax(0,1fr))}.product-detail{grid-template-columns:1fr}.seller-product-form{grid-template-columns:1fr}.seller-product-form label.full{grid-column:auto}.catalog-header nav{gap:10px;font-size:12px}}@media(max-width:480px){.catalog-products{grid-template-columns:1fr 1fr;gap:8px}.product-tile{padding:8px}.catalog-search{grid-template-columns:1fr}.catalog-container{width:95%;margin:13px auto}.product-specs{grid-template-columns:1fr}.catalog-logo{font-size:0}.catalog-logo span{margin:0}}