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Accounts receivable, net (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Accounts receivable, net |
Summary of accounts receivable, net | ​
​ | ​ | ​ | ​ | ​
​ |  | As of December 31,
​ | ​ | 2023 |  | 2024
​ | ​ | RMB | ​ | RMB
Accounts receivable |  | 712,373 |  | 744,978
Allowance for doubtful accounts |  | (19,263) |  | (28,772)
Accounts receivable, net |  | 693,110 |  | 716,206
Summary of movements in allowance for doubtful accounts | ​
​ | ​ | ​ | ​ | ​
​ |  | As of December 31,
​ | ​ | 2023 |  | 2024
​ | ​ | RMB | ​ | RMB
Balance at beginning of year | ​ | (10,261) | ​ | (19,263)
Impact of adoption of ASC 326 | ​ | (475) | ​ | —
Additions |  | (18,468) | ​ | (22,373)
Reversals | ​ | 9,908 | ​ | 10,328
Write-offs |  | 33 | ​ | 2,536
Balance at end of the year |  | (19,263) | ​ | (28,772)
​

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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