Convertible Preferred Stock and Stockholders' Equity (Deficit) - Schedule of Common Stock Reserved for Future Instances (Details)	Sep. 30, 2021 shares
Class Of Stock [Line Items]
Shares reserved	43,187,458
2021 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	4,368,240
2021 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Shares reserved	482,880
Options | 2013 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	6,707,003
Options to Purchase Common Stock | 2021 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	1,455,141
Restricted Stock Unit | 2021 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	310,520
Series 1 Convertible Preferred Stock
Class Of Stock [Line Items]
Shares reserved	29,863,674