Taxation - Movement of valuation allowance (Details) - CNY (¥) ¥ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Valuation allowance | ||
| Balance at beginning of the year | ¥ 381,506 | ¥ 299,355 |
| Additions | 495,259 | 88,236 |
| Reversals | (6,085) | |
| Balance at end of the year | ¥ 876,765 | ¥ 381,506 |