Goodwill - Schedule of changes in the carrying amount of goodwill (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	¥ 424,099		¥ 576,989
Goodwill acquired in business combinations	35,935			¥ 576,989
Impairment loss	0		(152,890)	0
Ending balance	¥ 460,034	$ 65,784	¥ 424,099	¥ 576,989

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

- Definition

Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References + Details