/* 文章页面专用样式 */

.nav-brand a {
    text-decoration: none;
    color: inherit;
}

.article {
    max-width: 100%;
    margin: 0 auto;
}

.article-header {
    background: linear-gradient(135deg, #f8fbff 0%, #e8f4fd 100%);
    padding: 3rem 0 4rem;
    text-align: center;
}

.breadcrumb {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 2rem;
}

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

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

.breadcrumb span {
    margin: 0 0.5rem;
    color: #ccc;
}

.article-title {
    font-size: 3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: #666;
    font-size: 0.95rem;
}

.article-content {
    padding: 4rem 0;
    background-color: #ffffff;
}

.article-body {
    max-width: 750px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333;
}

.article-lead {
    font-size: 1.3rem;
    color: #555;
    font-weight: 400;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
    line-height: 1.7;
}

.article-body h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 3rem 0 1.5rem;
    letter-spacing: -0.01em;
}

.article-body h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #34495e;
    margin: 2.5rem 0 1rem;
}

.article-body p {
    margin-bottom: 1.8rem;
    color: #444;
}

.article-body ul, 
.article-body ol {
    margin: 2rem 0;
    padding-left: 2rem;
}

.article-body li {
    margin-bottom: 0.8rem;
    color: #444;
}

.article-body li strong {
    color: #2c3e50;
    font-weight: 600;
}

.article-body blockquote {
    margin: 3rem 0;
    padding: 2rem 2.5rem;
    background-color: #f8fbff;
    border-left: 4px solid #3498db;
    font-style: italic;
    font-size: 1.2rem;
    color: #555;
    border-radius: 0 8px 8px 0;
}

.article-body blockquote::before {
    content: '"';
    font-size: 3rem;
    color: #3498db;
    line-height: 0;
    margin-right: 0.5rem;
    font-family: Georgia, serif;
}

.article-body blockquote::after {
    content: '"';
    font-size: 3rem;
    color: #3498db;
    line-height: 0;
    margin-left: 0.5rem;
    font-family: Georgia, serif;
}

.article-tags {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.tag {
    background-color: #f1f3f4;
    color: #555;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tag:hover {
    background-color: #3498db;
    color: white;
    transform: translateY(-1px);
}

.article-navigation {
    background-color: #f8f9fa;
    padding: 3rem 0;
    border-top: 1px solid #eee;
}

.nav-links-article {
    display: flex;
    justify-content: space-between;
    max-width: 750px;
    margin: 0 auto;
    gap: 2rem;
}

.nav-link-prev,
.nav-link-next {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.nav-link-next {
    text-align: right;
}

.nav-label {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-title {
    font-size: 1.1rem;
    color: #2c3e50;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-title:hover {
    color: #3498db;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .article-header {
        padding: 2rem 0 3rem;
    }
    
    .article-title {
        font-size: 2.2rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .article-content {
        padding: 2rem 0;
    }
    
    .article-body {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .article-lead {
        font-size: 1.2rem;
    }
    
    .article-body h2 {
        font-size: 1.6rem;
        margin: 2rem 0 1rem;
    }
    
    .article-body blockquote {
        margin: 2rem -1rem;
        padding: 1.5rem 2rem;
        font-size: 1.1rem;
    }
    
    .nav-links-article {
        flex-direction: column;
        gap: 2rem;
    }
    
    .nav-link-next {
        text-align: left;
    }
    
    .article-body ul,
    .article-body ol {
        padding-left: 1.5rem;
    }
}

@media (max-width: 480px) {
    .article-title {
        font-size: 1.8rem;
    }
    
    .article-body blockquote {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
}