Prepayments and Other Current Assets - Summary of prepayments and other current assets (Details) - CNY (¥) ¥ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Prepaid Expense and Other Assets, Current [Abstract] | ||
| Prepaid rental and deposits | ¥ 11,405 | ¥ 7,056 |
| Prepayments to suppliers and other business related expenses | 18,052 | 14,506 |
| Costs to fulfill contracts with customers | 306 | 758 |
| Others | 3,142 | 3,150 |
| Total | ¥ 32,905 | ¥ 25,470 |