Share-based compensation - Schedule of Assumptions Used to Estimate Fair Values of Share Options Granted (Details) - ¥ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Share-based compensation | |||
| Dividend yield | 0.00% | 0.00% | 0.00% |
| Employee Stock Option | |||
| Share-based compensation | |||
| Risk-free interest rate, minimum | 4.19% | 3.88% | 3.45% |
| Risk-free interest rate, maximum | 4.24% | ||
| Expected volatility, minimum | 59.61% | 57.25% | 56.55% |
| Expected volatility, maximum | 60.01% | ||
| Weighted average expected volatility | 59.83% | 57.25% | 56.55% |
| Minimum | Employee Stock Option | |||
| Share-based compensation | |||
| Expected exercise multiple | ¥ 2.5 | ¥ 2.5 | ¥ 2.5 |
| Maximum | Employee Stock Option | |||
| Share-based compensation | |||
| Expected exercise multiple | ¥ 2.8 | ¥ 2.8 | |
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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