v3.26.3
Share-based payment arrangements (Details) - CubeBio Co., Ltd. [Member] - shares
 1 Months Ended 6 Months Ended 12 Months Ended
Oct. 01, 2015
 [1],[2]
Jun. 15, 2020
Jun. 29, 2016
 [3],[4]
Jun. 30, 2026
Dec. 31, 2025
Entity Information [Line Items]          
Number of instruments 9,500,000 7,000,000 85,638 16,585,638 16,585,638
Vesting condition 2 years’ service from grant date 2 years’ service from grant date 2 years’ service from grant date    
Contractual life of options 9 years 7 years 9 years    
Type Equity-settled Equity-settled Equity-settled    
Underlying assets CUBEBIO Co., Ltd.’s ordinary shares CUBEBIO Co., Ltd.’s ordinary shares CUBEBIO Co., Ltd.’s ordinary shares    
[1] The options granted as of October 1, 2015 have been fully vested. Certain of these options were exercised, and the remaining options expired upon reaching the end of their contractual life. As of December 31, 2025, there were no exercisable options outstanding related to this grant
[2] The options granted as of October 1, 2015 have been fully vested. Certain of these options were exercised, and the remaining options expired upon reaching the end of their contractual life. As of June 30, 2026, there were no exercisable options outstanding related to this grant.
[3] The options granted as of June 29, 2016 have been fully vested and exercised. As of December 31, 2025, there were no exercisable options outstanding related to this grant.
[4] The options granted as of June 29, 2016 have been fully vested and exercised. As of June 30, 2026, there were no exercisable options outstanding related to this grant.