v3.25.4
Foreign currency risk - Schedule of Foreign Exchange Rates (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CNY 100      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Closing foreign exchange rate 11.35 12.44  
Average foreign exchange rate 11.78 12.33 13.03
EUR 1      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Closing foreign exchange rate 0.93 0.94  
Average foreign exchange rate 0.95 0.95 0.99
GBP 1      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Closing foreign exchange rate 1.07 1.14  
Average foreign exchange rate 1.11 1.14 1.13
JPY 100      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Closing foreign exchange rate 0.51 0.58  
Average foreign exchange rate 0.57 0.58 0.66
USD 1      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Closing foreign exchange rate 0.79 0.91  
Average foreign exchange rate 0.85 0.88 0.92