v3.26.1
Taxation - Reconciliation - after adoption of ASU 2023-09 (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount      
Income tax expenses at PRC statutory income tax rate-25% ¥ 352,178 ¥ 222,854 ¥ 51,369
Foreign tax effects 3,111    
Nontaxable or nondeductible item (377,892)    
Preferential income tax rate (377,941)    
Additional deduction for research and development expenses (2,240) (6,075) (16,323)
Share-based payment awards 1,004    
Others 1,285    
Changes in valuation allowance (6,226) (13,260) (27,801)
Withholding income tax 130,000    
Income tax expense ¥ 101,171 ¥ 25,568 ¥ 291
Tax Jurisdiction of Domicile [Extensible Enumeration] CHINA    
Effective Income Tax Rate Reconciliation, Percent      
Income tax expenses at PRC statutory income tax rate-25% 25.00% 25.00% 25.00%
Foreign tax effects 0.20%    
Nontaxable or nondeductible items (26.80%)    
Preferential income tax rate (26.80%)    
Additional deduction for research and development expenses (0.20%)    
Share-based payment awards 0.10%    
Others 0.10%    
Changes in valuation allowances (0.40%)    
Withholding income tax 9.20%    
Income tax expense 7.20%