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Ordinary Shares - Additional Information (Detail)
$ / shares in Units, ¥ in Thousands, $ in Thousands
 12 Months Ended
Aug. 15, 2024
USD ($)
shares
Aug. 15, 2024
CNY (¥)
shares
Jul. 05, 2023
shares
Jul. 05, 2022
shares
Sep. 10, 2021
$ / shares
shares
Dec. 31, 2024
$ / shares
shares
Jul. 01, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
$ / shares
shares
Mar. 22, 2021
shares
Jan. 31, 2021
shares
Jan. 25, 2021
shares
Jun. 30, 2020
shares
Jun. 24, 2020
shares
Jan. 31, 2020
shares
Sep. 30, 2018
shares
Nov. 30, 2017
shares
May 04, 2017
shares
Jan. 20, 2017
USD ($)
$ / shares
shares
Class of Stock [Line Items]                                    
Capital Units, Value | $                                   $ 50
Common Stock, Shares Authorized           0   390,518,031                   500,000,000
Common Stock, Par or Stated Value Per Share | $ / shares           $ 0.0001   $ 0.0001                   $ 0.0001
Common Stock, Shares, Issued           0   48,253,425                    
Stock Purchased During Period Shares                 3,751,945                  
Share Transferred From Ordinary Share To Zuniform Limited         825,131                          
Common Stock, Shares, Outstanding           0   48,253,425                    
Restricted Stock [Member]                                    
Class of Stock [Line Items]                                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross     739,208 739,207                            
Restricted Stock [Member] | Zuniform Limited [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Par or Stated Value Per Share | $ / shares         $ 0.0001                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross         1,478,415                          
Series D2 Convertible Redeemable Preferred Shares [Member]                                    
Class of Stock [Line Items]                                    
Redesignated Ordinary Share Transferred To Convertible Redeemable Preferred Shares                         6,943,638          
Series D3 Convertible Redeemable Preferred Shares [Member]                                    
Class of Stock [Line Items]                                    
Redesignated Ordinary Share Transferred To Convertible Redeemable Preferred Shares                     3,939,542              
Common Class A [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized           483,068,176   0                    
Common Stock, Par or Stated Value Per Share | $ / shares           $ 0.0001   $ 0.0001                    
Common Stock, Shares, Issued           163,294,773   0                    
Common Stock, Shares, Outstanding           163,294,773   0                    
Conversion of stock, shares converted 125,154,172 125,154,172                                
Common Class B [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized           16,931,824   0                    
Common Stock, Par or Stated Value Per Share | $ / shares           $ 0.0001   $ 0.0001                    
Common Stock, Shares, Issued           16,931,824   0                    
Common Stock, Shares, Outstanding           16,931,824   0                    
Common Stock [Member]                                    
Class of Stock [Line Items]                                    
Capital Units, Value | $             $ 50                      
Common Stock, Shares Authorized             500,000,000                      
Common Stock, Shares, Issued 6,819,000 6,819,000                             56,179,775  
Proceeds from Issuance of Common Stock | $ $ 25,003                                  
Initial Public Offering Related Cost | ¥   ¥ 7,866                                
Conversion of stock, shares converted [1]           (48,253,425)                        
Common Stock [Member] | Zuniform Limited [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Par or Stated Value Per Share | $ / shares         $ 0.0001                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross         1,478,415                          
Common Stock [Member] | Series A1 Convertible Redeemable Preferred Shares [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized                               493,344,264    
Common Stock [Member] | Series C1 Convertible Redeemable Preferred Shares [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized                             467,924,866      
Common Stock [Member] | Series D1 And Series C2 Convertible Redeemable Preferred Shares [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized                           433,071,251        
Common Stock [Member] | Series A4 And Series D2 Convertible Redeemable Preferred Shares [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized                       420,874,891            
Common Stock [Member] | Series E1 And Series E2 Convertible Redeemable Preferred Shares [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized                   390,518,031                
Common Stock [Member] | Common Class A [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized             483,068,176                      
Common Stock, Par or Stated Value Per Share | $ / shares             $ 0.0001                      
Common Stock, Shares, Issued           163,294,773                        
Stock Purchased During Period Shares 1,022,850 1,022,850                                
Conversion of stock, shares converted [1]           31,321,601                        
Common Stock [Member] | Common Class B [Member]                                    
Class of Stock [Line Items]                                    
Common Stock, Shares Authorized             16,931,824                      
Common Stock, Par or Stated Value Per Share | $ / shares             $ 0.0001                      
Stock Purchased During Period Shares 16,931,824 16,931,824                                
Common Stock, Shares, Outstanding           16,931,824                        
Conversion of stock, shares converted [1]           16,931,824                        
Share price | $ / shares           $ 11                        
[1] Redesignation of ordinary shares into Class A and Class B ordinary shares upon IPO includes (i) re-designation of 16,931,824 ordinary shares held by Unicentury Holdings Limited beneficially owned by Mr. Xiaoyan Lu into Class B ordinary shares on a one-for-one basis; (ii) re-designation of all of 31,321,601 outstanding ordinary shares into Class A ordinary shares on a one-for-one basis