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Stockholders' Equity (Deficit) - Summary of Fair Value of Stock of the Stock Purchase Right Under ESPP (Details)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Risk-free interest rate, Minimum 1.50% 0.60%
Risk-free interest rate, Maximum 1.70% 1.00%
Expected volatility   95.20%
Expected volatility, Minimum 73.20%  
Expected volatility, Maximum 74.60%  
Expected term (in years) 6 years 1 month 6 days  
2021 Employee Stock Purchase Plan    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Risk-free interest rate, Minimum 0.03%  
Risk-free interest rate, Maximum 0.33%  
Expected volatility, Minimum 71.60%  
Expected volatility, Maximum 83.90%  
Minimum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (in years)   5 years 9 months 18 days
Minimum | 2021 Employee Stock Purchase Plan    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (in years) 6 months  
Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (in years)   6 years 1 month 6 days
Maximum | 2021 Employee Stock Purchase Plan    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (in years) 1 year 7 months 20 days