v3.26.1
Principal Accounting Policies - Share-based compensation (Details) - CNY (¥)
¥ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Accounting Policies [Abstract]      
Incremental compensation cost ¥ 0.0 ¥ 2.0 ¥ 8.8