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v3.24.1

Summary of significant accounting policies - Additional information (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |  |
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Dec. 31, 2023 CNY (¥) segment contractType ¥ / $ | Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Mar. 28, 2024 CNY (¥) | Dec. 31, 2023 USD ($) contractType ¥ / $
Summary of significant accounting policies |  |  |  |  |  |
Accumulated deficit | ¥ 6,670,371 |  | ¥ 5,730,180 |  |  | $ 939,502
Current liabilities in excess of current assets | 926,738 |  |  |  |  |
Net cash used in operating activities | ¥ 1,243,406 | $ 175,129 | 461,337 | ¥ 907,283 |  |
Financing Receivable, Term | 6 months |  |  |  |  | 6 months
Advertising costs | ¥ 17,651 |  | 11,800 | 13,674 |  |
Employee social benefits expense | ¥ 213,772 |  | 197,669 | ¥ 168,971 |  |
Conversion rate for translation of amounts (in RMB/USD) | ¥ / $ | 7.0999 |  |  |  |  | 7.0999
Number of operating segments | segment | 1 | 1 |  |  |  |
Statutory surplus | ¥ 3,240 |  | ¥ 3,240 |  |  |
Products |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
VAT rate | 6.00% | 6.00% |  |  |  |
Services |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
VAT rate | 13.00% | 13.00% |  |  |  |
Software license revenues |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Number of contract types | contractType | 2 |  |  |  |  | 2
Related Party | Subsequent events |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Face amount of debt |  |  |  |  | ¥ 300,000 |

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