Related party transactions (Details Narrative) - USD ($)	1 Months Ended	3 Months Ended
	Jan. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Sep. 30, 2025	Dec. 31, 2023
Related Party Transaction [Line Items]
Salaries Wages And Officers Compensation Description		Li’ou Xie, one of the shareholders of the Group, entered into a labor contract with the Group’s wholly-owned subsidiary, SGTCL, on January 1, 2024. Pursuant to the terms of the labor contract, Mr. Xie serves as the financial manager for a term of three years, concluding on December 31, 2026, at a monthly salary and bonus of RMB52,200 (approximately US$7,357).
Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Annual salary		$ 60,000
B E Y E B E [Member]
Related Party Transaction [Line Items]
Principal amount					$ 1,000,000
Interest rate					7.50%
Outstanding balance loan amount		177,552		$ 112,552
Interest payable		2,867		$ 332
S Z B E Y E B E [Member]
Related Party Transaction [Line Items]
License fee	$ 300,000
License Agreement Expiration Date	Dec. 31, 2040
Fixed fee license revenue		70,500	$ 70,500
Royalty Income, Nonoperating		$ 0	$ 34,796