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v3.26.1

Principal accounting policies - Additional Information (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 $ / shares | Mar. 31, 2025 | Sep. 30, 2024 $ / shares | Mar. 31, 2024 $ / shares | Dec. 31, 2025 CNY (¥) item $ / ¥ shares | Dec. 31, 2025 USD ($) item shares | Dec. 31, 2024 CNY (¥) shares | Dec. 31, 2023 CNY (¥) shares
Significant Accounting Policies |  |  |  |  |  |  |  |
Rate of translations of amounts from RMB into US$ | $ / ¥ |  |  |  |  | 6.9931 |  |  |
Equity method investment, other than temporary impairment |  |  |  |  | ¥ 0 |  | ¥ 0 | ¥ 0
Impairment loss of investments |  |  |  |  | 43,698 |  | 166,127 | 210,813
Indefinitely lived intangible assets net |  |  |  |  | ¥ 0 |  | 0 |
Number of reporting units | item |  |  |  |  | 2 | 2 |  |
Impairment of goodwill |  |  |  |  | ¥ 0 |  | 0 | 0
Impairment of long-lived assets |  |  |  |  | ¥ 0 |  | 0 | 0
Noble member status duration |  |  |  |  | 1 month | 1 month |  |
Advertising revenues contract term |  |  |  |  | 3 months | 3 months |  |
Period over which payments are due |  |  |  |  | 3 months | 3 months |  |
Deferred revenue, revenue recognized |  |  |  |  | ¥ 265,628 |  | 412,257 | 446,881
Revenue expected to be recognized from remaining performance obligations |  |  |  |  | 259,991 |  |  |
Employee social security and welfare benefits |  |  |  |  | 136,623 |  | 142,272 | 194,779
Allocated share-based compensation expense |  |  |  |  | 73,592 | $ 10,523 | 64,520 | 78,265
Interest and penalties recognized associated with uncertain tax positions |  |  |  |  | 0 |  | 0 | 0
Unrecognized uncertain tax positions |  |  |  |  | ¥ 0 |  | 0 |
Minimum percentage appropriation to general reserve fund required |  |  |  |  | 10.00% |  |  |
Reserve level threshold for mandatory appropriation requirement (as a percent) |  |  |  |  | 50.00% | 50.00% |  |
Appropriations for the general reserve funds and statutory surplus fund |  |  |  |  | ¥ 0 |  | 0 | 0
Fair value changes |  |  |  |  | ¥ 120,027 |  | ¥ 145,458 | ¥ 35,811
Special cash dividend declared Q1 2024 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Dividends Payable, Date Declared |  |  |  | Mar. 19, 2024 |  |  |  |
Dividends Payable, Date of Record |  |  |  | May 10, 2024 |  |  |  |
Special cash dividend declared Q3 2024 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Dividends Payable, Date Declared |  |  | Aug. 13, 2024 |  |  |  |  |
Dividends Payable, Date of Record |  |  | Oct. 09, 2024 |  |  |  |  |
Dividends declared for the years 2025 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Dividends Payable, Date Declared |  | Mar. 18, 2025 |  |  |  |  |  |
Dividends Payable, Date of Record | Jun. 17, 2025 |  |  |  |  |  |  |
Dividends declared for the years 2026 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Dividends Payable, Date Declared |  | Mar. 18, 2025 |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Noble member status duration |  |  |  |  | 24 months | 24 months |  |
Ordinary Shares | Special cash dividend declared Q1 2024 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Special cash dividend declared (in USD per share) | $ / shares |  |  |  | $ 0.66 |  |  |  |
Ordinary Shares | Special cash dividend declared Q3 2024 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Special cash dividend declared (in USD per share) | $ / shares |  |  | $ 1.08 |  |  |  |  |
Ordinary Shares | Dividends declared for the years 2025 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Cash dividend per ordinary share | $ / shares | $ 1.47 |  |  |  |  |  |  |
American Depository Shares | Special cash dividend declared Q1 2024 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Special cash dividend declared (in USD per share) | $ / shares |  |  |  | $ 0.66 |  |  |  |
American Depository Shares | Special cash dividend declared Q3 2024 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Special cash dividend declared (in USD per share) | $ / shares |  |  | $ 1.08 |  |  |  |  |
American Depository Shares | Dividends declared for the years 2025 |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Cash dividend per ordinary share | $ / shares | $ 1.47 |  |  |  |  |  |  |
Performance Shares |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, other than options granted | shares |  |  |  |  | 0 | 0 | 0 | 0
Allocated share-based compensation expense |  |  |  |  | ¥ 0 |  | ¥ 0 | ¥ 0
Research and development expenses |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Capitalized costs |  |  |  |  | 0 |  | 0 | 0
Severance costs |  |  |  |  | 23,458 |  | 25,857 | 34,000
Allocated share-based compensation expense |  |  |  |  | 22,772 | $ 3,256 | 27,269 | 40,679
Sales and marketing expenses |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |
Advertising and market promotion expenses |  |  |  |  | 229,478 |  | 233,149 | 348,235
Allocated share-based compensation expense |  |  |  |  | ¥ 1,141 | $ 163 | ¥ 1,147 | ¥ 2,842

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