/* 重置和基本样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    padding: 30px;
}

/* 页眉样式 */
.article-header {
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.breadcrumb {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 20px;
}

.breadcrumb a {
    color: #3498db;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.article-title {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    line-height: 1.2;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 25px;
    color: #7f8c8d;
    font-size: 0.95rem;
}

.article-meta span {
    display: flex;
    align-items: center;
}

.article-meta strong {
    color: #2c3e50;
    margin-left: 5px;
}

/* 关键词样式 */
.keywords-section {
    margin-bottom: 25px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 6px;
}

.keywords-label {
    font-weight: 600;
    color: #2c3e50;
    margin-right: 10px;
}

.keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.keyword-tag {
    display: inline-block;
    background-color: #e1f5fe;
    color: #0277bd;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 描述样式 */
.description-section {
    margin-bottom: 20px;
    padding: 20px;
    background-color: #f0f7ff;
    border-left: 4px solid #3498db;
    border-radius: 4px;
}

.description-section h2 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.article-description {
    font-size: 1.1rem;
    color: #444;
    line-height: 1.5;
}

/* 主要内容区域 */
.article-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.content-body {
    flex: 1;
    min-width: 300px;
}

.featured-image {
    margin: 0 0 30px 0;
    width: 100%;
}

.featured-image img {
    width: 100%;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.featured-image figcaption {
    text-align: center;
    font-style: italic;
    color: #7f8c8d;
    margin-top: 8px;
    font-size: 0.9rem;
}

/* 正文内容样式 */
.content-body h2 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin: 30px 0 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid #f0f7ff;
}

.content-body h3 {
    font-size: 1.4rem;
    color: #34495e;
    margin: 25px 0 12px;
}

.content-body p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.7;
}

.content-body ul, .content-body ol {
    margin-bottom: 20px;
    padding-left: 25px;
}

.content-body li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.content-body pre {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 20px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 20px 0;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
}

.content-body code {
    font-family: 'Courier New', monospace;
    background-color: #f1f2f6;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9rem;
}

.content-body blockquote {
    border-left: 4px solid #3498db;
    padding: 20px;
    margin: 30px 0;
    background-color: #f8f9fa;
    font-style: italic;
    color: #555;
}

.content-body blockquote cite {
    display: block;
    margin-top: 10px;
    text-align: right;
    font-style: normal;
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* 侧边栏样式 */
.article-info {
    width: 300px;
    min-width: 250px;
}

.info-card {
    background-color: #f8f9fa;
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 25px;
    border-top: 3px solid #3498db;
}

.info-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.info-card ul {
    list-style: none;
    padding-left: 0;
}

.info-card li {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.info-card li:last-child {
    border-bottom: none;
}

.info-card a {
    color: #3498db;
    text-decoration: none;
}

.info-card a:hover {
    text-decoration: underline;
}

/* 页脚样式 */
.article-footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    text-align: center;
    color: #7f8c8d;
    font-size: 0.9rem;
}

.article-footer a {
    color: #3498db;
    text-decoration: none;
}

.article-footer a:hover {
    text-decoration: underline;
}

.footer-links {
    margin-top: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .article-content {
        flex-direction: column;
    }
    
    .article-info {
        width: 100%;
    }
    
    .content-body h2 {
        font-size: 1.6rem;
    }
    
    .content-body h3 {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .container {
        padding: 15px;
    }
    
    .article-title {
        font-size: 1.7rem;
    }
    
    .content-body h2 {
        font-size: 1.4rem;
    }
}