v3.26.1
Equity settled share-based payments - Option activities (Details) - Share option
 6 Months Ended 12 Months Ended
Dec. 31, 2023
shares
$ / shares
Dec. 31, 2025
shares
$ / shares
Dec. 31, 2024
shares
$ / shares
Jun. 30, 2023
shares
$ / shares
Equity settled share-based payments        
Number of options, outstanding at the beginning | shares 5,701,396 3,907,464 5,169,104 8,918,492
Number of options, exercised | shares (427,492) (837,828) (1,040,440) (1,376,096)
Number of options, forfeited | shares (104,800) (71,000) (221,200) (1,841,000)
Number of options, outstanding at the end | shares 5,169,104 2,998,636 3,907,464 5,701,396
Number of options, exercisable at the end | shares 2,237,104 2,998,636 2,585,464 2,114,496
Number of options, non-vested at the end | shares 2,932,000   1,322,000 3,586,900
Weighted-average exercise price, outstanding at the beginning (in dollars per share) $ 0.036 $ 0.036 $ 0.036 $ 0.036
Weighted-average exercise price, exercised (in dollars per share) 0.036 0.036 0.036 0.035
Weighted-average exercise price, forfeited (in dollars per share) 0.036 0.036 0.036 0.036
Weighted-average exercise price, outstanding at the end (in dollars per share) 0.036 0.036 0.036 0.036
Weighted-average exercise price, exercisable at the end (in dollars per share) 0.036 0.036 0.036 0.036
Weighted-average exercise price, non-vested at the end (in dollars per share) 0.036   0.036 0.036
Weighted-average grant date fair value, outstanding at the beginning (in dollars per share) 3.72 3.61 3.66 3.67
Weighted-average grant date fair value, exercised (in dollars per share) 4.2 3.78 3.82 3.9
Weighted-average grant date fair value, forfeited (in dollars per share) 4.74 4.89 3.95 3.33
Weighted-average grant date fair value, outstanding at the end (in dollars per share) 3.66 3.53 3.61 3.72
Weighted-average grant date fair value, exercisable at the end (in dollars per share) 3.57 $ 3.53 3.54 3.36
Weighted-average grant date fair value, non-vested at the end (in dollars per share) $ 3.73   $ 3.73 $ 3.94