v3.26.3
Share-based payments - Weighted average assumptions to estimate the fair value of the share options granted (Details) - Employee Stock Option - $ / shares
Sep. 17, 2026
Jun. 11, 2026
May 19, 2026
Mar. 17, 2026
Share-based payments        
Exercise price $ 9.76 $ 9.41 $ 9.63 $ 7.58
Expected volatility 66.00% 67.00% 67.00% 68.00%
Expected life of options 6 years 6 years 6 years 6 years
Risk-free interest rate 3.24% 3.32% 3.45% 3.00%