v3.26.1
Share-based compensation - Voyager's and Fintech's share-based awards (Details) - CNY (¥)
¥ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jul. 31, 2024
Mar. 31, 2021
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Voyager Incentive Plan          
Share based compensation          
Maximum aggregate number of ordinary shares which may be issued pursuant to all awards     19,647,161    
Share-based compensation expense     ¥ 117,971 ¥ 103,312 ¥ 146,230
Contractual term of share-based awards   7 years      
Incremental share-based compensation expenses on modification of terms of awards ¥ 3,491        
Voyager Incentive Plan | Tranche one          
Share based compensation          
Vesting percentage of share-based awards 25.00%        
Voyager Incentive Plan | Tranche two          
Share based compensation          
Vesting percentage of share-based awards 6.25%        
Voyager Incentive Plan | Minimum          
Share based compensation          
Vesting period of share-based awards   4 years      
Voyager Incentive Plan | Minimum | Tranche one          
Share based compensation          
Vesting percentage of share-based awards   25.00%      
Voyager Incentive Plan | Minimum | Tranche two          
Share based compensation          
Vesting percentage of share-based awards   25.00%      
Voyager Incentive Plan | Maximum          
Share based compensation          
Vesting period of share-based awards   5 years      
Voyager Incentive Plan | Maximum | Tranche one          
Share based compensation          
Vesting percentage of share-based awards   20.00%      
Voyager Incentive Plan | Maximum | Tranche two          
Share based compensation          
Vesting percentage of share-based awards   20.00%      
Equity Incentive Plan 2025          
Share based compensation          
Maximum aggregate number of ordinary shares which may be issued pursuant to all awards     20,200,000    
Share-based compensation expense     ¥ 40,929    
Contractual term of share-based awards     7 years    
Vesting period of share-based awards     4 years    
Equity Incentive Plan 2025 | Tranche one          
Share based compensation          
Vesting percentage of share-based awards     35.00%    
Equity Incentive Plan 2025 | Tranche two          
Share based compensation          
Vesting percentage of share-based awards     25.00%    
Equity Incentive Plan 2025 | Tranche three          
Share based compensation          
Vesting percentage of share-based awards     40.00%