/* 全局样式定义 */
body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #87CEEB, #2E8B57);
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

h1, h2, h3 {
    font-family: 'Roboto', sans-serif;
    color: #4CAF50;
}

a {
    text-decoration: none;
    color: #007BFF;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

.card img {
    width: 100%;
    height: auto;
    display: block;
}

.card-content {
    padding: 15px;
}

pre {
    background: #f4f4f4;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
}

@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5em;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.notice {
    background: #ffeb3b;
    padding: 10px;
    text-align: center;
    margin-bottom: 20px;
    border-radius: 5px;
}

article {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

article h2 {
    border-bottom: 2px solid #ddd;
    padding-bottom: 10px;
}

article pre {
    background: #e8f5e9;
    color: #2e7d32;
}