.categories-page {
    padding: 20px 0;
}

.categories-header {
    background: #f8f9fa;
    padding: 30px 0;
    margin-bottom: 30px;
    text-align: center;
}

.categories-title {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.categories-subtitle {
    color: #666;
    font-size: 16px;
}

/* 使用统一的容器类 */
.categories-container {
    /* 移除重复的容器设置，使用统一的main-container类 */
}

.primary-category-section {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 16px;
    margin-bottom: 30px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.primary-category-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    display: flex;
    align-items: center;
    position: relative;
    cursor: pointer;
    transition: all 0.3s;
}

.primary-category-header:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.primary-category-icon {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 24px;
    margin-right: 20px;
    backdrop-filter: blur(10px);
}

.primary-category-info {
    flex: 1;
}

.primary-category-name {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 8px;
}

.primary-category-description {
    font-size: 16px;
    opacity: 0.9;
    line-height: 1.4;
}

.primary-category-count {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
    backdrop-filter: blur(10px);
}

.sub-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
    padding: 25px;
}

.sub-category-card {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    padding: 18px;
    transition: all 0.3s;
    cursor: pointer;
}

.sub-category-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    border-color: #007bff;
    background: white;
}

.sub-category-header {
    display: block;
}

.sub-category-info {
    width: 100%;
}

.sub-category-name-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.sub-category-name {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    flex: 1;
}

.sub-category-description {
    color: #666;
    font-size: 14px;
    line-height: 1.3;
}

.sub-category-count {
    background: #e9ecef;
    color: #666;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: bold;
    white-space: nowrap;
    margin-left: 12px;
}

.no-sub-categories {
    padding: 40px;
    text-align: center;
    color: #666;
    font-style: italic;
}



.load-more-btn {
    display: block;
    width: 100%;
    padding: 12px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    color: #666;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 20px;
}

.load-more-btn:hover {
    background: #e9ecef;
    color: #333;
}

.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #666;
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.no-sites {
    text-align: center;
    padding: 40px;
    color: #666;
}

.no-sites h3 {
    margin-bottom: 10px;
    color: #333;
}

.back-home {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s;
}

.back-home:hover {
    background: #0056b3;
}



@media (max-width: 768px) {
    .categories-title {
        font-size: 24px;
    }
    
    .primary-category-name {
        font-size: 20px;
    }
    
    .sub-category-name {
        font-size: 14px;
    }
    
    .sub-categories-grid {
        grid-template-columns: 1fr;
        padding: 15px;
    }
    
    .primary-category-header {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    
    .primary-category-icon {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .sub-category-name-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .sub-category-count {
        margin-left: 0;
    }
    

}