/* 基础样式复位 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #f8f9fa;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: #333;
    padding: 20px;
}

header {
    text-align: center;
    padding: 50px 0;
}

header h1 {
    font-size: 2.5rem;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

header p {
    color: #666;
    font-size: 1.1rem;
}

/* 瀑布流布局核心 */
.gallery {
    column-count: 3; /* 电脑端显示3列 */
    column-gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background: #fff;
    margin-bottom: 20px;
    break-inside: avoid; /* 防止卡片被截断 */
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px); /* 鼠标移上去往上漂浮 */
}

.card img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.card:hover img {
    transform: scale(1.05); /* 图片轻微放大 */
}

.info {
    padding: 15px;
}

.info h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.info p {
    font-size: 0.9rem;
    color: #888;
}

footer {
    text-align: center;
    padding: 40px 0;
    color: #bbb;
    font-size: 0.9rem;
}

/* 手机端适配 */
@media (max-width: 768px) {
    .gallery {
        column-count: 2; /* 平板显示2列 */
    }
}

@media (max-width: 480px) {
    .gallery {
        column-count: 1; /* 手机显示1列 */
    }
}