Stockholders' Equity - Summary of Reserved Shares of Common Stock (Details)	Sep. 30, 2026 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issued and outstanding stock options	41,476,824
Issued and outstanding stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issued and outstanding stock options	4,040,500
Issued and outstanding restricted stock units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issued and outstanding stock options	12,696,840
Available for issuance under the 2021 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issued and outstanding stock options	18,116,406
Available for issuance under Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issued and outstanding stock options	6,623,078

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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+ Details