Significant Accounting Policies - Expected credit losses (Details) ¥ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
CNY (¥)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
CNY (¥)
|
Dec. 31, 2023
CNY (¥)
|
|
| Significant Accounting Policies | ||||
| Beginning balance | ¥ 152,027 | ¥ 124,856 | ¥ 94,988 | |
| Additional/(Reversal of) allowance for credit losses, net of recoveries | (26,798) | $ (3,832) | 36,734 | 29,916 |
| Write-off | (10,377) | (9,563) | (48) | |
| Ending balance | ¥ 114,852 | ¥ 152,027 | ¥ 124,856 | |