* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #f5f5f5;
    color: #222;
}

header {
    text-align: center;
    padding: 50px 20px 30px;
}

header h1 {
    font-size: 2em;
    margin-bottom: 8px;
}

header p {
    color: #888;
    font-size: 0.95em;
}

.gallery {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.card {
    display: block;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 8px;
    background: #ddd;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-3px);
}

.card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

footer {
    text-align: center;
    padding: 30px;
    color: #999;
    font-size: 0.85em;
}

@media (max-width: 600px) {
    .gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 10px;
    }
    header { padding: 30px 20px 20px; }
    header h1 { font-size: 1.5em; }
}