Stockholders' Equity (Deficit) - Additional Information (Details) - USD ($)			1 Months Ended			3 Months Ended		12 Months Ended
	Jan. 01, 2022	Mar. 16, 2021	Feb. 28, 2021	Jan. 31, 2021	Oct. 31, 2020	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2017	Dec. 31, 2021
Class Of Stock [Line Items]
Common stock, shares authorized		400,000,000				400,000,000	400,000,000		400,000,000
Preferred stock, shares authorized		40,000,000				40,000,000	40,000,000		40,000,000
Net cash proceeds from sale of convertible preferred stock							$ 73,749,000
Common stock reserved for issuance						10,874,086			8,678,836
Weighted average grant date fair value of options granted						$ 26.14	$ 5.13
Total intrinsic value of options exercised						$ 1,800,000	$ 200,000
Unvested shares early exercised option right to repurchase shares vesting period						4 years
Early exercise liability						$ 29,000			$ 35,000
Stock compensation expense						3,279,000	$ 792,000
Unrecognized compensation cost related to unvested stock-based awards						$ 43,200,000
Unrecognized compensation cost is expected to be recognized over a weighted average period						3 years 4 months 24 days
2021 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock reserved for issuance			360,000
Common stock, shares available for grant						723,457
Annually increase amount equal to lessor of percentage of shares of common stock outstanding on the final day of the immediately preceding calendar year	1.00%		1.00%
Issuance of shares including automatic increase	389,607
Participants to purchase common stock through payroll deductions maximum percentage of eligible compensation			20.00%
Stock compensation expense						$ 100,000
Outstanding liability related to employee contributions for shares pending issuance						$ 300,000
2017 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock reserved for issuance								5,524,354
Maximum options granted period								10 years
Award subject to continuous service						36 months
2017 Equity Incentive Plan | Tranche One
Class Of Stock [Line Items]
Percentage of award vested						25.00%
Award vesting period						1 year
2021 Incentive Award Plan
Class Of Stock [Line Items]
Common stock, shares available for grant			3,600,000			3,794,955
Annually increase amount equal to lessor of percentage of shares of common stock outstanding on the final day of the immediately preceding calendar year			5.00%
Issuance of shares including automatic increase	1,948,035
Convertible Preferred Stock
Class Of Stock [Line Items]
Warrant to purchase of convertible preferred stock		148,848
Series D-1 Convertible Preferred Stock
Class Of Stock [Line Items]
Issuance of convertible preferred stock for cash, net of issuance costs, shares					61,066,216
Shares issued, price per share					$ 0.7558
Net cash proceeds from sale of convertible preferred stock					$ 46,200,000
Convertible preferred stock issued for deferred purchase price obligation, shares					5,088,851
Convertible preferred stock, shares issued for deferred purchase price obligation, value					$ 3,800,000
Series D-2 Convertible Preferred Stock
Class Of Stock [Line Items]
Issuance of convertible preferred stock for cash, net of issuance costs, shares				93,995,300	94,007,051		86,775,740
Shares issued, price per share					$ 0.8510
Convertible preferred stock issued for deferred purchase price obligation, shares				7,219,560	7,231,311		7,219,560
Convertible preferred stock, shares issued for deferred purchase price obligation, value				$ 6,100,000	$ 6,200,000		$ 6,144,000
Change in fair value of preferred stock purchase right liability							$ 1,000,000.0
Series D Convertible Preferred Stock
Class Of Stock [Line Items]
Fair value of preferred stock purchase right liability					$ 3,900,000
Common Stock
Class Of Stock [Line Items]
Conversion of convertible preferred stock into common stock at initial public offering, shares							25,485,955
Common Stock | Convertible Preferred Stock
Class Of Stock [Line Items]
Conversion of convertible preferred stock into common stock at initial public offering, shares		25,485,955
Common Stock | Convertible Preferred Stock Warrant Liability
Class Of Stock [Line Items]
Conversion of convertible preferred stock into common stock at initial public offering, shares		14,884