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Accounts receivable, net - (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
Accounts receivable, net
Accounts receivable, gross	¥ 250,959		¥ 85,728
Less: credit loss provision	(12,390)		(9,684)	¥ (15,717)	¥ (2,303)
Accounts receivable, net	¥ 238,569	$ 34,115	¥ 76,044

X

- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

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- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

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-Paragraph 2
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- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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