.product-catalog{max-width:1000px;margin:0 auto;background-color:#fff;box-shadow:0 0 10px #0000001a}.navigation{background-color:#f8f9fa;border-bottom:1px solid #ddd;padding:0 15px;display:flex;justify-content:space-between;align-items:center}.nav-list{display:flex;list-style:none;gap:20px}.nav-link{display:block;padding:10px 0;text-decoration:none;color:#666;font-size:16px;transition:color .3s}.nav-link:hover,.nav-link.active{color:#e74c3c;font-weight:700}.main-content{display:flex;min-height:600px}.sidebar{width:250px;background-color:#f8f9fa;border-right:1px solid #ddd;padding:15px}.sidebar-title{font-size:18px;font-weight:700;margin-bottom:15px;color:#333}.category-list{display:flex;flex-direction:column;gap:2px}.category-item-list{display:flex;justify-content:space-between;align-items:center;padding:6px 12px;color:#000;font-size:13px;border-radius:4px;transition:all .3s;cursor:pointer;position:relative;width:100%;background-color:#fff;margin-bottom:2px}.category-item-list:hover{background-color:#f8f9fa;color:#000}.category-item-list.active{background-color:#e74c3c;color:#fff;font-weight:700}.category-item-list.active .category-icon,.category-item-list.active .expand-icon{color:#fff}.category-icon{margin-right:8px;font-size:16px;color:#000}.category-name{flex:1;text-align:left}.expand-icon{font-size:16px;color:#e74c3c;font-weight:700}.subcategory-list{margin-left:20px;margin-top:5px;margin-bottom:5px}.subcategory-item{display:flex;align-items:center;padding:8px 12px;color:#333;font-size:14px;border-radius:4px;transition:all .3s;cursor:pointer;margin-bottom:2px;width:100%;margin-left:20px;background-color:#fff;border:1px solid #e9ecef}.subcategory-item:hover{background-color:#e9ecef;color:#333}.subcategory-item.active{background-color:#e74c3c;color:#fff;font-weight:700}.subcategory-item.active .subcategory-icon{color:#fff}.subcategory-icon{margin-right:8px;font-size:14px;color:#666}.subcategory-name{flex:1;text-align:left}.category-item-list input[type=checkbox]{margin-right:8px;transform:scale(1.2)}.category-label{display:flex;align-items:center;flex:1;cursor:pointer}.subcategory-item input[type=checkbox]{margin-right:8px;transform:scale(1.1)}.subcategory-label{display:flex;align-items:center;flex:1;cursor:pointer}.expand-button{background:none;border:none;font-size:16px;color:#e74c3c;font-weight:700;cursor:pointer;padding:4px 8px;border-radius:4px;transition:background-color .3s}.expand-button:hover{background-color:#e74c3c1a}.product-grid-container{flex:1;padding:15px}.grid-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.grid-title{font-size:24px;font-weight:700;color:#333;display:flex;align-items:center;gap:10px}.category-icon{color:#e74c3c;font-size:20px}.product-count{font-size:16px;color:#666;font-weight:400}.display-controls{display:flex;align-items:center;gap:10px;font-size:14px;color:#666}.display-select{padding:5px 10px;border:1px solid #ddd;border-radius:4px;font-size:14px;width:120px}.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:25px;margin-bottom:40px}.product-card-list{background-color:#fff;border:1px solid #e9ecef;border-radius:8px;padding:15px;text-align:center;transition:transform .3s,box-shadow .3s;cursor:pointer}.product-card-list:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001a}.product-image-container{width:100%;height:150px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;background-color:#f8f9fa;border-radius:4px}.product-image{max-width:100%;max-height:100%;-o-object-fit:contain;object-fit:contain}.product-info{display:flex;justify-content:space-between;align-items:center;gap:10px}.product-name{font-size:14px;font-weight:700;color:#333;text-align:left;line-height:1.4;flex:1}.arrow-link{color:#e74c3c;font-size:18px;font-weight:700}.catalog-download{text-align:center;margin:50px 0}.download-btn{background-color:#e74c3c;color:#fff;border:none;padding:15px 40px;font-size:16px;font-weight:700;border-radius:50px;cursor:pointer;display:flex;align-items:center;gap:10px;margin:0 auto;transition:background-color .3s,transform .3s}.download-btn:hover{background-color:#c0392b;transform:translateY(-2px)}.download-icon{font-size:20px}.empty-state{text-align:center;padding:60px 24px;color:#666}.empty-state-icon{font-size:48px;margin-bottom:24px;opacity:.5}.empty-state-message{font-size:16px;margin-bottom:12px}.empty-state-description{font-size:14px;color:#999}.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:32px;padding:24px 0}.pagination-button{min-width:40px;height:40px;padding:8px 12px;border:1px solid #ddd;background-color:#fff;color:#333;cursor:pointer;font-size:14px;border-radius:4px;transition:all .3s ease;font-family:inherit}.pagination-button:hover:not(:disabled):not(.active){background-color:#f5f5f5;border-color:#999}.pagination-button.active{background-color:#e74c3c;color:#fff;border-color:#e74c3c;font-weight:700}.pagination-button:disabled{opacity:.5;cursor:not-allowed;background-color:#f8f9fa}.pagination-ellipsis{padding:8px;color:#999;font-size:14px}@media (max-width: 768px){.main-content{flex-direction:column}.sidebar{width:100%}.product-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}.nav-list{gap:20px}.grid-header{flex-direction:column;gap:18px;align-items:flex-start}.pagination{flex-wrap:wrap;gap:6px}.pagination-button{min-width:36px;height:36px;padding:6px 10px;font-size:13px}}