SHARE-BASED COMPENSATION - Share-based compensation (Details) - CNY (¥) ¥ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Share-based compensation | |||
| Compensation expenses to options granted | ¥ 114,652 | ¥ 116,064 | ¥ 234,624 |
| Cost of revenues | |||
| Share-based compensation | |||
| Compensation expenses to options granted | 9,408 | 6,932 | 16,245 |
| Sales and marketing expenses | |||
| Share-based compensation | |||
| Compensation expenses to options granted | 17,987 | 12,972 | 20,682 |
| General and administrative expenses | |||
| Share-based compensation | |||
| Compensation expenses to options granted | 18,164 | 27,776 | 63,326 |
| Research and development expenses | |||
| Share-based compensation | |||
| Compensation expenses to options granted | ¥ 69,093 | ¥ 68,384 | ¥ 134,371 |