Quarterly report [Sections 13 or 15(d)]

FAIR VALUE MEASUREMENTS - Assets measured at fair value on a recurring basis (Details)

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FAIR VALUE MEASUREMENTS - Assets measured at fair value on a recurring basis (Details) - Recurring - USD ($)
Sep. 30, 2026
Dec. 31, 2025
Assets:    
Short-term investments $ 33,753 $ 33,753
Total assets measured at fair value 33,753 33,753
Liabilities:    
Share-based compensation liability 56,368 29,182
Total liabilities measured at fair value 56,368 29,182
Level 1    
Assets:    
Short-term investments 33,753 33,753
Total assets measured at fair value 33,753 33,753
Level 3    
Liabilities:    
Share-based compensation liability 56,368 29,182
Total liabilities measured at fair value $ 56,368 $ 29,182