v3.25.2
Share-based Compensation - Share-based compensation of subsidiaries (Details)
$ / shares in Units, ¥ in Thousands
 1 Months Ended 6 Months Ended 12 Months Ended
Nov. 30, 2021
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Jun. 30, 2025
CNY (¥)
Number of Options Outstanding          
Outstanding, Beginning Balance | shares   52,060,649      
Exercised | shares   (1,326,807)      
Forfeited | shares   (10,530)      
Outstanding, Ending Balance | shares   50,569,583   52,060,649  
Weighted Average Exercise Price, Options          
Outstanding, Beginning Balance   $ 3.55      
Exercised   1.8      
Forfeited   43.19      
Outstanding, Ending Balance   $ 3.56   $ 3.55  
Weighted Average Remaining Contractual Life, Outstanding, Options   2 years 21 days   2 years 7 months 6 days  
Aggregate Intrinsic Value, Outstanding, Options | $   $ 54,447,000   $ 100,420,000  
Risk-free interest rate     4.14%    
Expected dividend yield     0.00%    
Expected volatility     62.00%    
Expected forfeiture rate (post-vesting)     6.09%    
A Plan          
Number of Options Outstanding          
Outstanding, Beginning Balance | shares   43,094,529      
Granted | shares   0      
Exercised | shares   (6,954,456)      
Forfeited | shares   (1,449,661)      
Outstanding, Ending Balance | shares   34,690,412   43,094,529  
Weighted Average Exercise Price, Options          
Outstanding, Beginning Balance   $ 0.00001      
Outstanding, Ending Balance   $ 0.00001   $ 0.00001  
Weighted Average Remaining Contractual Life, Outstanding, Options   7 years 8 months 12 days   8 years 1 month 2 days  
Aggregate Intrinsic Value, Outstanding, Options | $   $ 38,974   $ 47,950  
Expiration period 10 years        
Requisite service period 4 years        
Vesting percentage 25.00%        
Vesting period 36 months        
Risk-free interest rate     1.58%    
Expected term (in years)     10 years    
Expected dividend yield     0.00%    
Expected volatility     52.00%    
Expected forfeiture rate (post-vesting)     2.00%    
A Plan | Minimum          
Weighted Average Exercise Price, Options          
Fair value of the ordinary shares on the date of option grant (US$)     $ 1    
A Plan | Maximum          
Weighted Average Exercise Price, Options          
Fair value of the ordinary shares on the date of option grant (US$)     1.01    
Options          
Weighted Average Exercise Price, Options          
Fair value of the ordinary shares on the date of option grant (US$)     $ 5.48    
Options | A Plan          
Weighted Average Exercise Price, Options          
Vested   $ 1.1      
Unrecognized share-based compensation expenses, other than options | ¥         ¥ 223,049
Weighted-average period for unrecognized expenses expected to be recognized   1 year 10 months 13 days