/* 完整替换内容 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: #f5f5f5;
    padding: 10px;
}

.header {
    text-align: center;
    margin-bottom: 15px;
}

.category {
    margin-bottom: 20px;
    background: white;
    border-radius: 10px;
    padding: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.category-title {
    font-size: 18px;
    font-weight: bold;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    margin-bottom: 10px;
    color: #333;
}

.image-grid {
    display: grid;
    /* flex-wrap:wrap; */
    /* justify-content:space-between; */
    /* grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); */
    grid-template-columns: repeat(2, 1fr);
    justify-items: center;
    gap: 10px;
    padding: 10px;
}

.image-item {
    width: 100%;
    height: auto;
    aspect-ratio: 1/1; /* 关键修改：1:1正方形 */
    position: relative;
    overflow: hidden;
}

.image-item img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

@media (max-width: 480px) {
    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

/* 悬停效果 */
.image-item:hover img {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}