v3.26.1
Fair Value Measurement (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Impairment​ of long-term investments ¥ 343,729 $ 49,153 ¥ 486,456 ¥ 278,891
Fair Value, Inputs, Level 3 [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Impairment​ of long-term investments ¥ 320,700   ¥ 486,500 ¥ 278,900