/* 轮播图 */
.banner {
    margin-top: 70px;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.banner-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 产品分类 */
.categories {
    max-width: 1200px;
    margin: 50px auto;
    padding: 0 20px;
}

.categories h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-size: 28px;
}

.category-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.category-item {
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.category-item:hover {
    transform: translateY(-5px);
}

.category-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
}

.category-item h3 {
    margin-top: 15px;
    color: #333;
}

/* 图片墙 */
.image-wall {
    max-width: 1200px;
    margin: 50px auto;
    padding: 0 20px;
}

.image-wall h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-size: 28px;
}

.wall-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.wall-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.wall-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s;
}

.wall-item:hover img {
    transform: scale(1.05);
}

.wall-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    background: rgba(255,255,255,0.9);
    text-align: center;
}

.wall-info h3 {
    color: #333;
    margin-bottom: 5px;
}

.wall-info p {
    color: #ff6b81;
    font-weight: bold;
}