v3.26.1
Summary of Significant Accounting Policies - Trade receivable and current expected credit losses (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Summary of Significant Accounting Policies        
Allowance for credit losses ¥ 1,922 $ 275 ¥ 1,264 ¥ (1,079)
Trade receivables        
Summary of Significant Accounting Policies        
Allowance for credit losses ¥ 0   ¥ 0 ¥ 0