:root{--bg: #fafafa;--fg: #1a1a1a;--muted: #666;--accent: #2b6cb0;--accent-hover: #1f4e80;--border: #e2e2e2;--error: #b91c1c;--card: #fff;--radius: 8px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--fg);line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1100px;margin:0 auto;padding:16px}.header{background:#fff;border-bottom:1px solid var(--border)}.header-row{display:flex;align-items:center;justify-content:space-between}.brand{font-weight:700;font-size:1.25rem;color:var(--fg)}.nav{display:flex;gap:16px;align-items:center}.nav a.active{font-weight:600}.muted{color:var(--muted)}.error{color:var(--error)}.footer{padding:32px 16px;text-align:center}.catalog-head{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.search{padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);min-width:240px}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));margin-top:24px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}.card img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}.card-body{padding:12px;display:flex;flex-direction:column;gap:8px;flex:1}.card-title{color:var(--fg);font-weight:600}.row{display:flex;align-items:center;justify-content:space-between;gap:8px}.price{font-weight:700}.price-lg{font-size:1.75rem;font-weight:700;margin:8px 0}.detail{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:start}.detail img{width:100%;border-radius:var(--radius)}@media (max-width: 720px){.detail{grid-template-columns:1fr}}button{background:var(--accent);color:#fff;border:none;padding:8px 14px;border-radius:var(--radius);cursor:pointer;font-weight:600}button:hover:not(:disabled){background:var(--accent-hover)}button:disabled{background:#aab;cursor:not-allowed}button.link{background:transparent;color:var(--accent);padding:0;font-weight:400}button.link:hover{text-decoration:underline}input,textarea,select{padding:8px 10px;border:1px solid var(--border);border-radius:var(--radius);font-family:inherit;font-size:1rem;background:#fff}.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.table th,.table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border)}.table tbody tr:last-child td{border-bottom:none}.table tfoot td{border-top:1px solid var(--border)}.form{display:flex;flex-direction:column;gap:12px;max-width:480px}.form label{display:flex;flex-direction:column;gap:4px;font-weight:500}.narrow{max-width:480px}.summary{list-style:none;padding:0;margin:0;border-top:1px solid var(--border)}.summary li{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border)}.summary-total{border-bottom:none!important;padding-top:12px!important}