v3.26.1
Financial risk management and fair values - Interest Rate Risk - Interest rate profile (Details) - Interest rate risk - CNY (¥)
¥ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Fixed rate    
Disclosure of financial instruments by type of interest rate    
Financial assets and liabilities ¥ (6,949,867) ¥ 158,613
Fixed rate | Loans and borrowings    
Disclosure of financial instruments by type of interest rate    
Financial liabilities ¥ (7,166,434) ¥ (571,265)
Fixed rate | Loans and borrowings | Minimum    
Disclosure of financial instruments by type of interest rate    
Interest rate 0.70% 2.07%
Fixed rate | Loans and borrowings | Maximum    
Disclosure of financial instruments by type of interest rate    
Interest rate 7.64% 3.00%
Fixed rate | Term deposits    
Disclosure of financial instruments by type of interest rate    
Financial assets ¥ 216,567 ¥ (409,135)
Fixed rate | Term deposits | Minimum    
Disclosure of financial instruments by type of interest rate    
Interest rate 1.05% 1.05%
Fixed rate | Term deposits | Maximum    
Disclosure of financial instruments by type of interest rate    
Interest rate 4.80% 4.80%
Fixed rate | Cash at bank    
Disclosure of financial instruments by type of interest rate    
Financial assets   ¥ (3,517)
Fixed rate | Cash at bank | Minimum    
Disclosure of financial instruments by type of interest rate    
Interest rate   2.10%
Fixed rate | Cash at bank | Maximum    
Disclosure of financial instruments by type of interest rate    
Interest rate   4.36%
Variable rate    
Disclosure of financial instruments by type of interest rate    
Financial assets and liabilities ¥ 6,861,692 ¥ 6,321,165
Variable rate | Restricted cash    
Disclosure of financial instruments by type of interest rate    
Financial assets ¥ 54,229 ¥ 1,026
Variable rate | Restricted cash | Minimum    
Disclosure of financial instruments by type of interest rate    
Interest rate 0.05% 0.10%
Variable rate | Restricted cash | Maximum    
Disclosure of financial instruments by type of interest rate    
Interest rate 1.35% 0.95%
Variable rate | Cash at bank    
Disclosure of financial instruments by type of interest rate    
Financial assets ¥ 6,807,463 ¥ 6,320,139
Variable rate | Cash at bank | Minimum    
Disclosure of financial instruments by type of interest rate    
Interest rate 0.05% 0.00%
Variable rate | Cash at bank | Maximum    
Disclosure of financial instruments by type of interest rate    
Interest rate 4.50% 4.31%