/* 基础背景与布局优化 */
    body { background-color: #f5f7f9; }
    .page-container { max-width: 1200px; margin: 0 auto; }

    /* 分类按钮：增加点击反馈与阴影层级 */
    .category-container {
        margin: 20px 0;
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .category-btn {
        font-size: 14px;
        color: #555;
        padding: 8px 20px;
        border-radius: 25px;
        background: #fff;
        border: 1px solid #eee;
        transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        text-decoration: none !important;
        display: inline-block;
        box-shadow: 0 2px 5px rgba(0,0,0,0.03);
    }
    .category-btn:hover {
        border-color: #4aadff;
        color: #4aadff;
        transform: translateY(-2px);
    }
    .category-btn.active {
        background: linear-gradient(135deg, #4aadff 0%, #007bff 100%);
        color: #fff;
        border-color: transparent;
        box-shadow: 0 4px 12px rgba(74, 173, 255, 0.4);
    }

    /* 商品网格系统 */
    .products-grid-row {
        display: flex;
        flex-wrap: wrap;
        margin-right: -10px;
        margin-left: -10px;
    }
    .grid-item-col {
        padding: 10px;
        width: 50%; /* 移动端双列 */
    }
    @media (min-width: 768px) { .grid-item-col { width: 33.33%; } }
    @media (min-width: 1200px) { .grid-item-col { width: 20%; } }

    /* 商品卡片语义化增强 */
    .product-grid-item {
        background: #fff;
        border-radius: 12px;
        overflow: hidden;
        transition: all 0.3s ease;
        border: 1px solid rgba(0,0,0,0.05);
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .product-grid-item:hover {
        transform: translateY(-6px);
        box-shadow: 0 12px 24px rgba(0,0,0,0.1) !important;
    }

    .product__image {
        position: relative;
        width: 100%;
        aspect-ratio: 1 / 1;
        background: #f9f9f9;
        overflow: hidden;
    }
    .product__image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .product-grid-item:hover .product__image img { transform: scale(1.08); }

    .product__description {
        padding: 12px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .product_name {
        font-size: 14px;
        font-weight: 500;
        line-height: 1.4;
        height: 40px;
        margin-bottom: 8px;
        overflow: hidden;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
    }
    .product_name a { color: #333; text-decoration: none; }
    .product_name a:hover { color: #4aadff; }

    .product_prices { display: flex; align-items: baseline; gap: 2px; }
    .product_prices b { font-size: 18px; color: #ff4d4f; font-family: "Helvetica Neue", Arial; }
    .price-symbol { font-size: 13px; color: #ff4d4f; font-weight: bold; }

    .notice-box {
        background: #fff;
        padding: 15px 20px;
        border-radius: 8px;
        border-left: 4px solid #4aadff;
        margin-bottom: 20px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }

    .article__caption {
        font-size: 12px;
        color: #999;
        display: block;
        margin-top: 5px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }