Annual report [Section 13 and 15(d), not S-K Item 405]

Note 12 - Stockholders' Equity (Details Textual)

Note 12 - Stockholders' Equity (Details Textual)								1 Months Ended						3 Months Ended				12 Months Ended		20 Months Ended
Note 12 - Stockholders' Equity (Details Textual)	Mar. 24, 2025 shares	Mar. 13, 2025	Mar. 07, 2025 shares	Dec. 05, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) $ / shares shares	Nov. 28, 2022	Nov. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Jan. 31, 2023 USD ($) shares	Dec. 31, 2024 USD ($) $ / shares shares	Sep. 30, 2024 $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Feb. 25, 2025 USD ($) $ / shares shares	Mar. 06, 2025 shares	Sep. 27, 2022
Preferred Stock, Shares Issued (in shares) \| shares														0				0
Preferred Stock, Shares, Maximum Undesignated Issable (in shares) \| shares														1,000,000				1,000,000
Common Stock, Shares Authorized (in shares) \| shares											45,000,000			45,000,000				45,000,000	45,000,000
Common Stock, Shares, Outstanding (in shares) \| shares											1,145,201			1,823,275				1,823,275	1,145,201
Stock Issued During Period, Value, New Issues																		$ 500,000	$ 200,000
Proceeds from Issuance of Common Stock																		4,485,717	3,364,300
Payments to Acquire Investments																		700,000	$ (0)
QBSG Limited [Member]
Investment Ownership, Additional Percentage Acquired in Transaction				6.00%
Investment Ownership, Additional Percentage Acquired, Consideration Transferred				$ 1,200,000
Payments to Acquire Investments				$ 700,000
Investment Owned, Percentage of Total Issued Share Capital				15.00%																		9.00%
Expo Experts [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares													9,934
Stock Issued During Period, Value, New Issues													$ 200,000
Yiran Gu [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares												33,318
Shares Issued, Price Per Share (in dollars per share) \| $ / shares												$ 21
Proceeds from Issuance of Common Stock												$ 700,000
Tumim Stone Capital LLC [Member]
Proceeds from Issuance of Common Stock																		$ 381,717
Share Price, Percentage, Lowest Daily Weighed Average Price of Three Days Prior					97.00%
Tumim Stone Capital LLC [Member] \| Stock Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares					17,622	46,993					27,334			5,643	0	18,467	4,022
Stock Issued During Period, Value, New Issues					$ 750,000															$ 2,846,017
Shares Issued, Price Per Share (in dollars per share) \| $ / shares					$ 42.56	$ 42.56					$ 17			$ 8.3			$ 23.6	$ 8.3	$ 17
Proceeds from Issuance of Common Stock						$ 2,000,000					$ 464,300			$ 46,728		$ 239,885	$ 95,104
Equity Offering, Maximum Offering Amount						$ 12,775,000
Tumim Stone Capital LLC [Member] \| Stock Purchase Agreement [Member] \| Minimum [Member]
Shares Issued, Price Per Share (in dollars per share) \| $ / shares										$ 12.7						$ 12.7
Tumim Stone Capital LLC [Member] \| Stock Purchase Agreement [Member] \| Maximum [Member]
Shares Issued, Price Per Share (in dollars per share) \| $ / shares										$ 15.6						15.6
C F L [Member] \| Stock Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares											12,267
Shares Issued, Price Per Share (in dollars per share) \| $ / shares											$ 16.3								$ 16.3
Proceeds from Issuance of Common Stock											$ 200,000
Eighty-eight Investment LLC [Member]
Proceeds from Issuance of Common Stock																		$ 495,000
Eighty-eight Investment LLC [Member] \| Stock Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares										100,000
Shares Issued, Price Per Share (in dollars per share) \| $ / shares										$ 4.95						$ 4.95
Proceeds from Issuance of Common Stock										$ 495,000
Yu Tian [Member]
Proceeds from Issuance of Common Stock																		120,000
Yu Tian [Member] \| Stock Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares									39,867
Shares Issued, Price Per Share (in dollars per share) \| $ / shares									$ 3.01						$ 3.01
Proceeds from Issuance of Common Stock									$ 120,000
Single Institutional Investor [Member] \| Stock Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares								140,000
Shares Issued, Price Per Share (in dollars per share) \| $ / shares								$ 8
Proceeds from Issuance or Sale of Equity								$ 1,989,000
Single Institutional Investor [Member] \| Stock Purchase Agreement [Member] \| Pre-funded Warrants [Member]
Class of Warrant or Right, Issued During Period (in shares) \| shares								110,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares								$ 7.9
QBSG Limited [Member]
Proceeds from Issuance of Common Stock																		0
QBSG Limited [Member] \| Profit Participation Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares				113,636
Stock Issued During Period, Value, New Issues				$ 500,000
Shares Issued, Price Per Share (in dollars per share) \| $ / shares				$ 4.4
Aurous Vertex Limited [Member]
Proceeds from Issuance of Common Stock																		$ 1,500,000
Aurous Vertex Limited [Member] \| Stock Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares																		250,000
Shares Issued, Price Per Share (in dollars per share) \| $ / shares														$ 6				$ 6
Proceeds from Issuance of Common Stock																		$ 1,500,000
Option, Maximum Number of Shares (in shares) \| shares														100,000				100,000
Option, Purchase Price Per Share (in dollars per share) \| $ / shares														$ 6				$ 6
Subsequent Event [Member]
Common Stock, Shares, Outstanding (in shares) \| shares			1,933,274																		19,322,748
Subsequent Event [Member] \| Aurous Vertex Limited [Member] \| Stock Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares	100,000
Option, Maximum Number of Shares (in shares) \| shares																				100,000
Option, Purchase Price Per Share (in dollars per share) \| $ / shares																				$ 3.385
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio							2
Reverse Stock Split [Member] \| Subsequent Event [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		10	10