v3.26.3
Share based compensation - Fair value of options granted that are estimated using binomial model (Details) - Employee Stock Option
6 Months Ended
Jun. 30, 2026
$ / shares
Share based compensation  
Risk-free rate of return (as a percent) 4.61%
Volatility (as a percent) 46.33%
Expected dividend yield (as a percent) 0.00%
Fair value of underlying ordinary share (in USD per share) $ 1.03
Expected terms (in years) 10 years