/* 通用样式 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

header {
    background: #4CAF50;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
    background: #fff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.introduction, .gallery {
    margin-bottom: 2rem;
}

h2 {
    color: #4CAF50;
}

.responsive-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

footer {
    text-align: center;
    padding: 1rem 0;
    background: #333;
    color: #fff;
    position: relative;
    bottom: 0;
    width: 100%;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    header h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.2rem;
    }
}