/* 相关分类样式 */
.related-categories {
    padding: 30px 0;
    background: #f9f9f9;
    border-radius: 15px;
    margin: 20px 0;
}

.related-categories h3 {
    text-align: center;
    margin-bottom: 30px;
    font-weight: 300;
    color: #333;
    font-size: 24px;
}

.category-box {
    display: block;
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #eee;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.category-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border-color: #e0e0e0;
    text-decoration: none;
}

.category-box i {
    font-size: 36px;
    color: #2196F3;
    margin-bottom: 15px;
    display: block;
    transition: all 0.3s ease;
}

.category-box:hover i {
    transform: scale(1.1);
    color: #1976D2;
}

.category-box h4 {
    color: #424242;
    font-size: 16px;
    margin: 0;
    font-weight: 500;
    line-height: 1.4;
}

.category-box:hover h4 {
    color: #1976D2;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .category-box {
        padding: 20px;
    }
    
    .category-box i {
        font-size: 30px;
    }
    
    .category-box h4 {
        font-size: 14px;
    }
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    .related-categories {
        background: #1a1a1a;
    }
    
    .related-categories h3 {
        color: #fff;
    }
    
    .category-box {
        background: #2d2d2d;
        border-color: #3d3d3d;
    }
    
    .category-box:hover {
        border-color: #4d4d4d;
        box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    }
    
    .category-box h4 {
        color: #e0e0e0;
    }
    
    .category-box:hover h4 {
        color: #64B5F6;
    }
}