v3.26.1
Income Taxes - Reconciliation of Differences between PRC Statutory Income Tax Rate and Group's Effective Income Tax Rate (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amount      
Income tax expense ¥ 8,159 ¥ 4,645 ¥ 12,976
Percent      
Effective income tax rate 95.70% (9.60%) (13.50%)
PRC      
Amount      
Statutory income tax rate ¥ 2,131    
Research and development credits (4,653)    
Nondeductible entertainment fee 2,448    
Preferential tax treatment 3,323    
Other nontaxable or nondeductible items 99    
Change in valuation allowance (7,382)    
Uncertain tax positions (1,501)    
Income tax expense ¥ 8,159    
Percent      
Statutory income tax rate 25.00% 25.00% 25.00%
Research and development credits (54.60%)    
Nondeductible entertainment fee 28.70%    
Other nontaxable or nondeductible Items 1.10%    
Permanent differences   2.80% 16.30%
Change in valuation allowance (86.60%) (25.20%) (46.40%)
Effect of preferential tax treatment 39.00% (6.90%) (7.40%)
Uncertain tax positions (17.60%) 6.40% 1.80%
Tax rate difference from statutory rate in other jurisdictions   (11.70%) (2.80%)
Effective income tax rate 95.70% (9.60%) (13.50%)
Foreign Tax Jurisdictions | Cayman      
Amount      
Foreign Tax Effects ¥ 275    
Percent      
Foreign Tax Effects 3.20%    
Foreign Tax Jurisdictions | Hong Kong      
Amount      
Foreign Tax Effects ¥ 4,558    
Change in valuation allowance ¥ 8,848    
Percent      
Foreign Tax Effects 53.50%    
Change in valuation allowance 103.80%    
Other Foreign Jurisdictions      
Amount      
Foreign Tax Effects ¥ 13    
Percent      
Foreign Tax Effects 0.20%