    <style>
/* faq.css - 常见问题页面专用样式 */

/* 基础样式 */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    color: #333;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.faq-intro {
    margin-bottom: 30px;
    font-size: 16px;
    line-height: 1.7;
    color: #555;
}

/* 分类按钮 */
.faq-categories {
    margin-bottom: 30px;
}

.faq-categories h2 {
    color: #2c3e50;
    font-size: 20px;
    margin-bottom: 15px;
}

.category-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.category-btn {
    padding: 8px 16px;
    background-color: #f1f1f1;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    color: #34495e;
    transition: all 0.3s ease;
}

.category-btn:hover {
    background-color: #e1e1e1;
}

.category-btn.active {
    background-color: #3498db;
    color: white;
}

/* 问答项样式 */
.faq-accordion {
    margin-bottom: 40px;
}

.faq-item {
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    border: 1px solid #e1e1e1;
}

.faq-question {
    width: 100%;
    padding: 18px 20px;
    text-align: left;
    background-color: #f8f9fa;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #2c3e50;
    display: flex;
    align-items: center;
    transition: background-color 0.3s;
}

.faq-question:hover {
    background-color: #eef2f5;
}

.faq-icon {
    margin-right: 12px;
    font-weight: bold;
    font-size: 18px;
    width: 20px;
    display: inline-block;
    text-align: center;
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease;
    background-color: white;
}

.faq-answer p, 
.faq-answer ul, 
.faq-answer ol, 
.faq-answer table {
    margin: 15px 20px;
}

.faq-answer ul, 
.faq-answer ol {
    padding-left: 20px;
}

.faq-item.active .faq-answer {
    padding: 15px 0;
    max-height: 1000px;
}

.faq-item.active .faq-question {
    background-color: #e3f2fd;
}

.faq-item.active .faq-icon {
    content: "-";
}

/* 表格样式 */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.comparison-table th, 
.comparison-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e1e1e1;
}

.comparison-table th {
    background-color: #f5f5f5;
    font-weight: 500;
    color: #34495e;
}

.comparison-table tr:hover td {
    background-color: #f9f9f9;
}

/* 单位分类盒子 */
.conversion-categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.category-box {
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 6px;
    border-left: 3px solid #3498db;
}

.category-box h4 {
    margin-top: 0;
    color: #2c3e50;
}

.category-box p {
    margin-bottom: 0;
    font-size: 14px;
    color: #555;
}

/* 联系区域 */
.faq-contact {
    text-align: center;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 8px;
    margin-top: 30px;
}

.faq-contact h2 {
    color: #2c3e50;
    margin-top: 0;
}

.contact-btn {
    display: inline-block;
    padding: 12px 25px;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    margin-top: 15px;
    transition: background-color 0.3s;
}

.contact-btn:hover {
    background-color: #2980b9;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .faq-container {
        padding: 15px;
    }
    
    .category-buttons {
        gap: 8px;
    }
    
    .category-btn {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .faq-question {
        padding: 15px;
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .conversion-categories {
        grid-template-columns: 1fr;
    }
    
    .faq-contact {
        padding: 20px 15px;
    }
}
    </style>