/* CSS 样式开始 */
body {
    font-family: 'Helvetica', sans-serif;
    background: linear-gradient(135deg, #f5f5dc, #e0e0c8);
    color: #4b5320;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
header {
    background: linear-gradient(to right, #3a506b, #1c2541);
    color: #fff;
    text-align: center;
    padding: 40px 20px;
    font-family: 'Georgia', serif;
}
header h1 {
    font-size: 3rem;
    margin: 0;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}
header p {
    font-size: 1.2rem;
    margin-top: 10px;
    opacity: 0.9;
}
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}
.card {
    background: #fff;
    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(-10px);
}
.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 2px solid #ff6347;
}
.card-content {
    padding: 20px;
}
.card-content h3 {
    font-family: 'Georgia', serif;
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #3a506b;
}
.card-content p {
    font-size: 1rem;
    color: #4b5320;
}
.section-title {
    text-align: center;
    font-family: 'Georgia', serif;
    font-size: 2rem;
    color: #3a506b;
    margin: 40px 0 20px;
}
.article-container {
    background: #fafafa;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin: 20px 0;
}
.article-container h2 {
    font-family: 'Georgia', serif;
    font-size: 2rem;
    color: #3a506b;
    margin-bottom: 20px;
}
.article-container h3 {
    font-family: 'Georgia', serif;
    font-size: 1.5rem;
    color: #4b5320;
    margin-top: 20px;
}
.article-container pre {
    background: #f5f5dc;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 0.9rem;
}
.article-container code {
    color: #ff6347;
    font-family: 'Courier New', monospace;
}
.article-container table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
.article-container th,
.article-container td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}
.article-container th {
    background: #3a506b;
    color: #fff;
}
.article-container ul,
.article-container ol {
    padding-left: 20px;
    margin: 10px 0;
}
.article-container li {
    margin-bottom: 5px;
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    .card img {
        height: 150px;
    }
    .article-container h2 {
        font-size: 1.5rem;
    }
    .article-container h3 {
        font-size: 1.2rem;
    }
}
@media (max-width: 400px) {
    .container {
        grid-template-columns: 1fr;
    }
    .card img {
        height: 120px;
    }
    .article-container pre {
        font-size: 0.8rem;
    }
}
/* CSS 样式结束 */