.knowledge-section {
    padding: 40px 0;
    background-color: #f9f9f9;
}

.knowledge-section h1 {
    text-align: center;
    color: #333;
    margin-bottom: 40px;
    font-size: 2.5em;
}

.knowledge-list {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 30px;
}

.knowledge-item {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #eee;
}

.knowledge-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.knowledge-item h2 {
    color: #007bff;
    font-size: 1.5em;
    margin-bottom: 10px;
}

.knowledge-item p {
    color: #555;
    line-height: 1.8;
    font-size: 1.1em;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .knowledge-section {
        padding: 30px 0;
    }
    
    .knowledge-section h1 {
        font-size: 2.2em;
        margin-bottom: 30px;
    }
    
    .knowledge-list {
        margin: 0 20px;
        padding: 25px;
    }
    
    .knowledge-item h2 {
        font-size: 1.4em;
    }
    
    .knowledge-item p {
        font-size: 1em;
    }
}

@media (max-width: 576px) {
    .knowledge-section {
        padding: 20px 0;
    }
    
    .knowledge-section h1 {
        font-size: 2em;
        margin-bottom: 25px;
    }
    
    .knowledge-list {
        margin: 0 15px;
        padding: 20px;
    }
    
    .knowledge-item {
        margin-bottom: 20px;
        padding-bottom: 20px;
    }
    
    .knowledge-item h2 {
        font-size: 1.3em;
        margin-bottom: 8px;
    }
    
    .knowledge-item p {
        font-size: 0.95em;
        line-height: 1.7;
    }
}

@media (max-width: 480px) {
    .knowledge-section {
        padding: 15px 0;
    }
    
    .knowledge-section h1 {
        font-size: 1.8em;
        margin-bottom: 20px;
    }
    
    .knowledge-list {
        margin: 0 10px;
        padding: 15px;
    }
    
    .knowledge-item {
        margin-bottom: 15px;
        padding-bottom: 15px;
    }
    
    .knowledge-item h2 {
        font-size: 1.2em;
        margin-bottom: 6px;
    }
    
    .knowledge-item p {
        font-size: 0.9em;
        line-height: 1.6;
    }
}