Stock Plans - Employee Stock Options (Details) - $ / shares	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Options to purchase common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, minimum	77.00%	71.00%
Expected volatility, maximum	81.00%	78.00%
Weighted average risk-free interest rate, minimum	3.96%	3.62%
Weighted average risk-free interest rate, maximum	4.47%	4.64%
Dividend yield	0.00%	0.00%
Minimum \| Options to purchase common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	5 years 3 months 7 days	5 years 3 months 7 days
Fair value of common stock (in dollars per share)	$ 10.04	$ 6.00
Maximum \| Options to purchase common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	6 years 3 months	6 years 3 months
Fair value of common stock (in dollars per share)	$ 17.87	$ 17.11
2021 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	6 months	6 months
Expected volatility, minimum	79.00%	76.00%
Expected volatility, maximum	81.00%	78.00%
Weighted average risk-free interest rate, minimum	3.69%	4.34%
Weighted average risk-free interest rate, maximum	4.32%	5.40%
Dividend yield	0.00%	0.00%
2021 Employee Stock Purchase Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of common stock (in dollars per share)	$ 12.93	$ 6.47
2021 Employee Stock Purchase Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of common stock (in dollars per share)	$ 16.43	$ 10.95

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

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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.

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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.

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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.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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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.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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