* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        /* ДВЕ КОЛОНКИ: 1/4 + 3/4 */
        .catalog-grid {
            max-width: 1336px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ЛЕВАЯ КОЛОНКА (ТАБЫ) — 1/4 */
        .tabs-panel {
            flex: 1;
            max-width: 300px;            
            background: #ffffff;
            border-radius: 0;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03);
            padding: 12px 0;
            align-self: start;
            position: sticky;
            top: 0;
        }

        .tabs-list {
            display: flex;
            flex-direction: column;
            gap: 1px;
        }

        .tab-btn {
            width: 100%;
            text-align: left;
            background: #fec500;
            border: none;
            font-size: 1rem;
            font-weight: 500;
            padding: 12px 18px;
            border-radius: 0;
            cursor: pointer;
            color: #2c3e50;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .tab-btn:hover {
            background: #eab100;
            color: #000;
        }

        .tab-btn.active {
            background: #eab100;
            color: #000;
            box-shadow: 0 6px 12px -6px rgba(0, 102, 204, 0.3);
        }

        /* ПРАВАЯ КОЛОНКА — 3/4 */
        .content-panel {
            flex: 3;
            min-width: 400px;
            width: 1200px;
            background: #ffffff;
            border-radius: 0;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.03);
            padding: 12px 0 16px;
        }

        /* Шапка секции */
        .category-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            flex-wrap: wrap;
            margin-bottom: 14px;
            padding-bottom: 12px;
            border-bottom: 2px solid #eef2f8;
        }

        .category-header h2 {
            font-size: 1.2rem;
            margin: 12px 0;
            font-weight: 600;
            letter-spacing: -0.3px;
            color: #0f2b3b;
        }

        /* .item-count {
            background: #eef2fa;
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            color: #2c5a7a;
        } */

        /* СЕТКА КАРТОЧЕК */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            gap: 8px;
        }

        /* КАРТОЧКА ТОВАРА — размер ~160x200, рамка, картинка, заголовок */
        .product-card {
            background: #fff;
            border: 1px solid #e2e9f0;
            border-radius: 6px;
            padding: 8px 6px 8px;
            transition: all 0.25s ease;
            text-align: center;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
        }

        .product-card:hover {
            transform: translateY(-5px);
            border-color: #cbdde9;
            box-shadow: 0 15px 25px -12px rgba(0, 0, 0, 0.1);
        }

        .product-card a {
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .product-card img {
            width: 130px;
            height: 130px;
            object-fit: contain;
            margin-bottom: 6px;
        }

        .product-card img:hover {
            filter:grayscale(0.98)
        }

        .product-card h4 {
            font-size: .85rem;
            font-weight: 600;
            margin: 8px 0 8px;
            line-height: 1.35;
            color: #1f3b4c;
        }

        .card-footer {
            margin-top: 8px;
        }

        .more-btn {
            display: inline-block;
            background: #f0f4f9;
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 500;
            color: #0066cc;
            transition: background 0.2s, color 0.2s;
        }

        .product-card:hover .more-btn {
            background: #0066cc;
            color: white;
        }

        /* Контейнеры для контента каждой категории — по умолчанию скрыты, показывается только активный */
        .category-content {
            display: none;
            animation: fadeSlide 0.25s ease-out;
        }

        .category-content.active-content {
            display: block;
        }

        @keyframes fadeSlide {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Адаптив */
        @media (max-width: 800px) {
            .catalog-grid {
                flex-direction: column;
            }
            .tabs-panel {
                position: static;
                width: 100%;
            }
            .tabs-list {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .tab-btn {
                width: auto;
                flex: 1 0 auto;
                justify-content: center;
            }
            .cards-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
                gap: 16px;
            }
            .product-card img {
                width: 110px;
                height: 110px;
            }
        }

        @media (max-width: 550px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-panel {
                padding: 16px;
            }
            .category-header h2 {
                font-size: 1.4rem;
            }
        }