Financial assets measured at fair value - Schedule of Investment (Details) ¥ in Thousands, $ in Thousands |
Dec. 31, 2025
CNY (¥)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
CNY (¥)
|
|---|---|---|---|
| Financial assets measured at FVTPL (i) | |||
| Financial assets measured at FVTPL | ¥ 1,291 | ¥ 132,352 | |
| Financial assets measured at FVOCI, non-current (ii) | |||
| Financial assets measured at FVOCI, non-current | 92,396 | $ 13,211 | 198,949 |
| Unlisted Investments, Current [Member] | |||
| Financial assets measured at FVTPL (i) | |||
| Financial assets measured at FVTPL | 1,291 | 45 | |
| Unlisted Investments, Non-current [Member] | |||
| Financial assets measured at FVTPL (i) | |||
| Financial assets measured at FVTPL | 0 | 132,307 | |
| Listed Investments [Member] | |||
| Financial assets measured at FVOCI, non-current (ii) | |||
| Financial assets measured at FVOCI, non-current | 92,396 | 66,642 | |
| Listed Equity Investments [Member] | |||
| Financial assets measured at FVOCI, non-current (ii) | |||
| Financial assets measured at FVOCI, non-current | ¥ 93,687 | ¥ 198,994 |