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Investments (Details) - EUR (€)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Investments [Line Items]      
Short-term investment € 34,557 € 52,050  
Short term deposit 26,557 44,050  
Short-term commercial deposit with sales 8,000 8,000  
Interest income € 3,457 € 63,118 € 444