v3.26.1
Significant Accounting Policies - Schedule of concentration of credit risk (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Significant Accounting Policies      
Revenue ¥ 4,373,153 ¥ 3,284,525 ¥ 2,045,152
Accounts receivable, net 441,414 260,958  
Revenue | Customer concentration risk | Customer A      
Significant Accounting Policies      
Revenue ¥ 1,477,333 ¥ 950,542 ¥ 539,136
Concentration risk, percentage 34.00% 29.00% 26.00%
Revenue | Customer concentration risk | Customer B      
Significant Accounting Policies      
Revenue ¥ 987,973 ¥ 594,564 ¥ 207,350
Concentration risk, percentage 23.00% 18.00% 10.00%
Revenue | Customer concentration risk | Customer C      
Significant Accounting Policies      
Revenue ¥ 458,931    
Concentration risk, percentage 10.00%    
Revenue | Customer concentration risk | Customer D      
Significant Accounting Policies      
Revenue   ¥ 410,875 ¥ 229,038
Concentration risk, percentage   13.00% 11.00%
Revenue | Customer concentration risk | Customer E      
Significant Accounting Policies      
Revenue     ¥ 385,860
Concentration risk, percentage     19.00%
Accounts receivable | Customer concentration risk | Customer A      
Significant Accounting Policies      
Accounts receivable, net ¥ 100,284    
Concentration risk, percentage 23.00%    
Accounts receivable | Customer concentration risk | Customer B      
Significant Accounting Policies      
Accounts receivable, net ¥ 173,719 ¥ 119,962  
Concentration risk, percentage 39.00% 46.00%