Ordinary shares (Details) ¥ in Thousands, $ in Millions	1 Months Ended	12 Months Ended
Aug. 31, 2023 USD ($)	Dec. 31, 2025 CNY (¥) shares	Dec. 31, 2025 USD ($) shares	Dec. 31, 2024 CNY (¥) shares	Dec. 31, 2024 USD ($) shares	Dec. 31, 2023 CNY (¥) shares	Dec. 31, 2023 USD ($) shares
Ordinary shares
Repurchase of shares \| $	$ 100
Repurchase period	12 months
Total aggregated consideration \| ¥		¥ 85,980				¥ 206,345
Class A ordinary shares
Ordinary shares
Stock issued during period shares stock options exercised with restricted stock award issuance		2,151,869	2,151,869	2,043,276	2,043,276	2,454,365	2,454,365
Common shares, shares issued		73,146,779	73,146,779	74,845,398	74,845,398	82,696,852	82,696,852
Common shares, shares outstanding		73,146,779	73,146,779	74,845,398	74,845,398	82,696,852	82,696,852
Class B ordinary shares
Ordinary shares
Number of shares conversion of during period		0	0	0	0	0	0
Common shares, shares issued		150,386,517	150,386,517	150,386,517	150,386,517	150,386,517	150,386,517
Common shares, shares outstanding		150,386,517	150,386,517	150,386,517	150,386,517	150,386,517	150,386,517
American Depository Shares
Ordinary shares
Number of shares repurchased		3,850,488	3,850,488	9,894,730	9,894,730	9,158,997	9,158,997
Total aggregated consideration		¥ 85,980	$ 12	¥ 248,332	$ 35	¥ 206,345	$ 29
Amount paid for share repurchase program \| ¥		¥ 90,345		¥ 247,890		¥ 202,422

Changes In Equity And Comprehensive Income.

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Amount paid for shares repurchased during the year.

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Stock issued during period shares stock options exercised with restricted stock award issuance.

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Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Period share may be purchased under authorized share repurchase plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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