Intangible assets - Amortization charges (Details) - CNY (¥) ¥ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of detailed information about intangible assets [line items] | |||
| Amortization | ¥ 37,783 | ¥ 138,831 | ¥ 1,003,282 |
| Operations and support | |||
| Disclosure of detailed information about intangible assets [line items] | |||
| Amortization | 1,529 | 157 | 148 |
| Sales and marketing | |||
| Disclosure of detailed information about intangible assets [line items] | |||
| Amortization | 9,502 | 86,686 | 948,145 |
| Research and development | |||
| Disclosure of detailed information about intangible assets [line items] | |||
| Amortization | 17,863 | 18,951 | 32,683 |
| General and administrative | |||
| Disclosure of detailed information about intangible assets [line items] | |||
| Amortization | ¥ 8,889 | ¥ 33,037 | ¥ 22,306 |