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Summary of Significant Accounting Policies - Fair value (Details) | Dec. 31, 2025 | Dec. 31, 2024
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Expected volatility | Minimum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.49 | 0.49
Expected volatility | Maximum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.52 | 0.52
Probability | Liquidation scenario | Minimum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.20 | 0.20
Probability | Liquidation scenario | Maximum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.43 | 0.43
Probability | Redemption scenario | Minimum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.20 | 0
Probability | Redemption scenario | Maximum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.43 | 0.43
Probability | IPO scenario | Minimum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.15 | 0.15
Probability | IPO scenario | Maximum |  |
Significant unobservable inputs adopted in the valuation |  |
Measurement input | 0.60 | 0.80

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