v3.26.1
Share-based payments - Option additional information (Details) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Employee Stock Option        
Share-based payments        
Weighted-average grant date fair values of share options $ 5.78 $ 4.59 $ 5.4 $ 4.82