.knowledge-base-articles {
        margin: 20px 0;
    }
    
    .kb-article {
        margin-bottom: 30px;
        padding: 20px;
        border: 1px solid #e5e5e5;
        border-radius: 5px;
        background-color: #f9f9f9;
    }
    
    .kb-difficulty {
        display: inline-block;
        padding: 3px 8px;
        border-radius: 3px;
        font-size: 0.8em;
        margin-right: 10px;
    }
    
    .kb-difficulty-beginner {
        background-color: #d4edda;
        color: #155724;
    }
    
    .kb-difficulty-intermediate {
        background-color: #fff3cd;
        color: #856404;
    }
    
    .kb-difficulty-advanced {
        background-color: #f8d7da;
        color: #721c24;
    }
    
    .kb-last-updated {
        font-size: 0.8em;
        color: #6c757d;
    }
    
    .kb-excerpt {
        margin: 10px 0;
    }
    
    .kb-read-more {
        display: inline-block;
        margin-top: 10px;
        padding: 5px 15px;
        background-color: #007bff;
        color: #fff;
        text-decoration: none;
        border-radius: 3px;
    }
    
    .kb-read-more:hover {
        background-color: #0069d9;
        text-decoration: none;
        color: #fff;
    }