v3.26.1
Income Taxes - Summary of Reconciliations of Income Tax Expenses (Detail)
¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
¥ / shares
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
CNY (¥)
¥ / shares
Dec. 31, 2023
CNY (¥)
¥ / shares
Income Tax Expense (Benefit), Amount:        
Income tax benefits at PRC statutory tax rate of 25% [1] ¥ (70,205) $ (10,039) ¥ (57,412) ¥ (75,534)
Effect on adoption of preferential tax rate 30,933 4,424 24,566 27,227
Loss before income tax expense     (229,646) (302,135)
Non-deductible expenses     42,563 24,855
Other jurisdictions     (547) (354)
Change in valuation allowance 18,812 2,690 8,994 39,772
Share-based compensation expenses 36,605 5,234    
Additional deduction for qualified R&D expenses (19,822) (2,835) (17,941) (16,012)
Others (Amount) 1,231 177    
Others     163 252
Income tax expenses (benefits) ¥ (4,409) $ (630) ¥ 386 ¥ 206
Effect of preferential tax rate inside the PRC on basic and dilutive loss per share | (per share) ¥ 0 $ 0 ¥ 0 ¥ 0
Income Tax Rate, Percent        
Income tax benefits at PRC statutory tax rate of 25%, rate [1] 25.00% 25.00% 25.00% 25.00%
Effect on adoption of preferential tax rate, rate (11.00%) (11.00%)    
Change in valuation allowance, rate (6.70%) (6.70%)    
Share-based compensation expense, rate (13.00%) (13.00%)    
Additional deduction for qualified R&D expenses, rate 7.10% 7.10%    
Others (Percent) (0.50%) (0.50%)    
Income tax expenses (benefit) 1.60% 1.60%    
Cayman        
Income Tax Expense (Benefit), Amount:        
Other jurisdictions ¥ (2,055) $ (294)    
Income Tax Rate, Percent        
Effect of different tax rates in different jurisdictions, rate 0.70% 0.70%    
Other foreign jurisdictions        
Income Tax Expense (Benefit), Amount:        
Other jurisdictions ¥ 92 $ 13    
Income Tax Rate, Percent        
Effect of different tax rates in different jurisdictions, rate 0.00% 0.00%    
[1] The PRC statutory tax rate is used for the reconciliation as the majority of the Group’s operations are based in the PRC.