Significant accounting judgments, estimates and assumptions (Details) ¥ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
CNY (¥)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
CNY (¥)
|
Dec. 31, 2023
CNY (¥)
|
|
| Significant accounting judgments, estimates and assumptions [Abstract] | ||||
| Excess incentive amount reclassified to selling expenses | ¥ 33.1 | $ 4.7 | ¥ 75.2 | ¥ 224.5 |