.article-content h2 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1f2937;
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #2563eb;
        }
        
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1f2937;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }
        
        .article-content p {
            margin-bottom: 1rem;
            line-height: 1.7;
            color: #6b7280;
        }
        
        .article-content ul {
            margin-bottom: 1rem;
            padding-left: 1.5rem;
        }
        
        .article-content li {
            margin-bottom: 0.5rem;
            line-height: 1.6;
            color: #6b7280;
        }
        
        .article-content img {
            margin: 1.5rem 0;
            border-radius: 0.5rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
        }
        
        .related-article:hover {
            transform: translateY(-2px);
            transition: all 0.3s ease;
        }
        
        .sidebar-link:hover {
            background-color: #2563eb;
            color: white;
            transition: all 0.2s ease;
        }
        
        .sidebar-link.active {
            background-color: #2563eb;
            color: white;
        }