v3.26.1
Financial instruments - Fair values and risk management - Liquidity Risk (Details)
Dec. 31, 2025
HKD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
HKD ($)
Dec. 31, 2024
USD ($)
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]        
Weighted average effective interest rate, lease liabilities (%) 3.80% 3.80% 4.74% 4.74%
Current trade payables   $ 124,845    
Trade and other payables   124,845    
Other liabilities       $ 3,756
Other liabilities       3,756
Amount due to a related company $ 2,274,399   $ 9,159,071  
Amount due to a related company 2,274,399   9,159,071  
Lease liabilities 2,971,195 2,971,195 1,613,905 1,613,905
Lease liabilities   3,107,921   1,683,619
Financial liabilities   2,399,244   9,162,827
Liabilities, undiscounted cash flows   2,399,244   9,162,827
Within one year        
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]        
Trade and other payables   124,845    
Other liabilities       3,756
Amount due to a related company 2,274,399   9,159,071  
Lease liabilities 1,297,001   1,116,827  
Lease liabilities   1,382,010   1,169,339
Liabilities, undiscounted cash flows   2,399,244   9,162,827
Within a period of more than one year but not exceeding two years        
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]        
Trade and other payables   0    
Other liabilities       0
Amount due to a related company 0   0  
Lease liabilities   955,923   474,720
Liabilities, undiscounted cash flows   0   0
Within a period of more than two years but not exceeding five years        
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]        
Trade and other payables   0    
Other liabilities       0
Amount due to a related company $ 0   $ 0  
Lease liabilities   769,988   39,560
Liabilities, undiscounted cash flows   $ 0   $ 0