v3.26.1
Financial risk management - Valuation process, inputs and relationships to fair value - Additional information (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Preferred shares issued by subsidiaries | Financial liabilities measured at FVTPL | Risk-free interest rate      
Instruments by category      
Percentage of increase in unobservable inputs of liabilities 5.00% 5.00% 5.00%
Percentage of decrease in unobservable input of liabilities 5.00% 5.00% 5.00%
Increase (decrease) in profit before income tax due to possible increase in unobservable input of liabilities ¥ 9,475 ¥ 2,787 ¥ 14,073
Increase (decrease) in profit before income tax due to possible decrease in unobservable inputs of liabilities ¥ 9,582 ¥ 1,355 ¥ 18,266
Preferred shares issued by subsidiaries | Financial liabilities measured at FVTPL | DLOM      
Instruments by category      
Percentage of increase in unobservable inputs of liabilities 5.00% 5.00% 5.00%
Percentage of decrease in unobservable input of liabilities 5.00% 5.00% 5.00%
Increase (decrease) in profit before income tax due to possible increase in unobservable input of liabilities ¥ 74,955 ¥ 77,887 ¥ 66,683
Increase (decrease) in profit before income tax due to possible decrease in unobservable inputs of liabilities ¥ 74,955 ¥ 77,887 ¥ 70,741
Preferred shares issued by subsidiaries | Financial liabilities measured at FVTPL | Expected volatility      
Instruments by category      
Percentage of increase in unobservable inputs of liabilities 5.00% 5.00% 5.00%
Percentage of decrease in unobservable input of liabilities 5.00% 5.00% 5.00%
Increase (decrease) in profit before income tax due to possible increase in unobservable input of liabilities ¥ 4,942 ¥ 38,209 ¥ 97,910
Increase (decrease) in profit before income tax due to possible decrease in unobservable inputs of liabilities ¥ 628 ¥ 41,613 ¥ 99,222
Investments in ordinary and preferred shares | Financial assets measured at FVTPL      
Instruments by category      
Percentage of increase in unobservable inputs of assets 5.00% 5.00% 5.00%
Percentage of decrease in unobservable input of assets 5.00% 5.00% 5.00%
Increase (decrease) in profit/loss before income tax due to possible increase in unobservable input of assets ¥ 17,494 ¥ 17,943 ¥ 13,355
Increase (decrease) in profit/loss before income tax due to possible decrease in unobservable inputs of assets ¥ 17,429 ¥ 17,927 ¥ 13,354