Segment information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Segment information
Professional services fee in connection with Business Combination	$ (105,000)	$ (398,163)
Other formation and operating costs	(471,374)	(661,031)
Total formation and operating costs	(576,374)	(1,059,194)
Interest earned on investment held in Trust Account	779,992	3,171,545
Net income	$ 203,618	$ 2,112,351