Convertible Preferred Stock and Stockholders' Equity (Deficit) - Schedule of Common Stock Reserved for Future Instances (Details)	Mar. 31, 2021 shares
Class Of Stock [Line Items]
Shares reserved	183,390,904
2013 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	7,606,062
2021 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	4,801,482
2021 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Shares reserved	550,000
Options | 2013 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	7,606,062
Options | 2021 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	5,234,842
Options to Purchase Common Stock | 2021 Equity Incentive Plan
Class Of Stock [Line Items]
Shares reserved	433,360
Series 1 Convertible Preferred Stock
Class Of Stock [Line Items]
Shares reserved	60,000,000
Series 2 Non-voting Convertible Preferred Stock
Class Of Stock [Line Items]
Shares reserved	60,000,000
Undesignated Convertible Preferred Stock
Class Of Stock [Line Items]
Shares reserved	50,000,000