/* 基本全局样式 */
body, html {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

header {
    background-color: #007bff;
    color: white;
    padding: 20px;
    text-align: center;
}

main {
    padding: 20px;
}

/* 产品类别卡片样式 */
.product-categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.category-card {
    width: calc(50% - 20px);
    margin: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s;
    cursor: pointer;
}

.category-card:hover {
    transform: scale(1.05);
}

.category-card img {
    width: 100%;
    height: auto;
}

.category-card h2 {
    text-align: center;
    padding: 10px;
}

/* 响应式布局调整 */
@media (min-width: 600px) {
    .category-card {
        width: calc(33.333% - 20px);
    }
}

@media (min-width: 900px) {
    .category-card {
        width: calc(25% - 20px);
    }
}
/* Responsive design for smaller screens */
@media (max-width: 768px) {
    .container {
        padding: 10px; /* Reduces padding on smaller screens */
    }
    .header h1 {
        font-size: 2rem; /* Adjusts header size for smaller screens */
    }
}