Stock-Based Compensation - Summary of Transaction under the Plans and the 2021 Plan (Detail) - $ / shares	6 Months Ended	12 Months Ended
Jun. 30, 2025	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Number of options, Beginning Balance	3,814,015
Number of options, Granted	9,290,214
Number of options, Exercised	(145,080)
Number of options, Forfeited	(130,308)
Number of options, Ending Balance	12,828,841	3,814,015
Weighted average exercise price, Beginning Balance	$ 9.7
Weighted average exercise price, Granted	12.57
Weighted average exercise price, Exercised	6.73
Weighted average exercise price, Forfeited	10.64
Weighted average exercise price, Ending Balance	$ 11.8	$ 9.7
Weighted average remaining contractual life (years)	9 years 4 months 24 days	8 years 4 months 6 days
Aggregate intrinsic value (per share)	$ 1.53	$ 8.45

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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Share-based compensation arrangement by share-based payment award options, outstanding, intrinsic value per share.

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