v3.26.1
FAIR VALUE MEASURES - Assumptions used in valuing warrant liabilities and convertible promissory notes (Details)
Mar. 31, 2026
Y
$ / shares
Jan. 26, 2026
Y
Dec. 31, 2025
Dec. 31, 2025
$ / shares
Dec. 31, 2025
Y
Aug. 01, 2025
$ / shares
Dec. 31, 2024
Y
Scenario Based Method | Discount rate              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.20 0.20          
Scenario Based Method | Expected life (in years)              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input | Y 0.5 0.68          
Scenario Based Method | SPAC Exit Scenario              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.85 0.80          
Scenario Based Method | Qualified Financing Scenario              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.075 0.10          
Scenario Based Method | Dissolution Scenario              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.075 0.10          
Warrant liability Series B-1 | Expected life (in years)              
FAIR VALUE MEASURES              
Warrants, Measurement Input | Y             2.5
Warrant liability Series B-1 | Assumed volatility              
FAIR VALUE MEASURES              
Warrants, Measurement Input             0.75
Warrant liability Series B-1 | Assumed risk-free interest rate              
FAIR VALUE MEASURES              
Warrants, Measurement Input             0.0429
Warrant liability Series B-1 | SPAC Exit Scenario | Discount rate              
FAIR VALUE MEASURES              
Warrants, Measurement Input 0.25   0.25        
Warrant liability Series B-1 | SPAC Exit Scenario | Expected life (in years)              
FAIR VALUE MEASURES              
Warrants, Measurement Input | Y 0.2       0.38    
Warrant liability Series B-1 | SPAC Exit Scenario | Future projected price per share              
FAIR VALUE MEASURES              
Warrants, Measurement Input | $ / shares 37.76     37.76      
Warrant liability Series B-1 | SPAC Exit Scenario | Strike price              
FAIR VALUE MEASURES              
Warrants, Measurement Input | $ / shares 0.08     0.08      
Warrant liability Series B-1 | Option Pricing Method ("OPM") | Expected life (in years)              
FAIR VALUE MEASURES              
Warrants, Measurement Input | Y 2       2    
Warrant liability Series B-1 | Option Pricing Method ("OPM") | Share value              
FAIR VALUE MEASURES              
Warrants, Measurement Input | $ / shares 18.16     18.14      
Warrant liability Series B-1 | Option Pricing Method ("OPM") | Assumed volatility              
FAIR VALUE MEASURES              
Warrants, Measurement Input 0.90   0.90        
Warrant liability Series B-1 | Option Pricing Method ("OPM") | Assumed risk-free interest rate              
FAIR VALUE MEASURES              
Warrants, Measurement Input 0.038   0.035        
Warrant liability Series D | Expected life (in years)              
FAIR VALUE MEASURES              
Warrants, Measurement Input | Y             2.5
Warrant liability Series D | Assumed volatility              
FAIR VALUE MEASURES              
Warrants, Measurement Input             0.75
Warrant liability Series D | Assumed risk-free interest rate              
FAIR VALUE MEASURES              
Warrants, Measurement Input             0.0429
Warrant liability Series D | SPAC Exit Scenario | Discount rate              
FAIR VALUE MEASURES              
Warrants, Measurement Input 0.25   0.25        
Warrant liability Series D | SPAC Exit Scenario | Expected life (in years)              
FAIR VALUE MEASURES              
Warrants, Measurement Input | Y 0.2       0.38    
Warrant liability Series D | SPAC Exit Scenario | Future projected price per share              
FAIR VALUE MEASURES              
Warrants, Measurement Input | $ / shares 37.76     37.76      
Warrant liability Series D | SPAC Exit Scenario | Strike price              
FAIR VALUE MEASURES              
Warrants, Measurement Input | $ / shares 27.21     27.21      
Warrant liability Series D | Option Pricing Method ("OPM") | Expected life (in years)              
FAIR VALUE MEASURES              
Warrants, Measurement Input | Y 2       2    
Warrant liability Series D | Option Pricing Method ("OPM") | Share value              
FAIR VALUE MEASURES              
Warrants, Measurement Input | $ / shares 33.61     33.71      
Warrant liability Series D | Option Pricing Method ("OPM") | Assumed volatility              
FAIR VALUE MEASURES              
Warrants, Measurement Input 0.37   0.37        
Warrant liability Series D | Option Pricing Method ("OPM") | Assumed risk-free interest rate              
FAIR VALUE MEASURES              
Warrants, Measurement Input 0.038   0.035        
Warrant liability Series D | Scenario Based Method | Discount rate              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.20   0.20     0.20  
Warrant liability Series D | Scenario Based Method | Expected life (in years)              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.5   0.0075   0.75 0.0116  
Warrant liability Series D | Scenario Based Method | Share value              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input | $ / shares 37.35     34.47   27.66  
Warrant liability Series D | Scenario Based Method | Assumed volatility              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.40   0.40     0.40  
Warrant liability Series D | Scenario Based Method | Assumed risk-free interest rate              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.037   0.035     0.037  
Warrant liability Series D | Scenario Based Method | SPAC Exit Scenario              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.85   0.75     0.25  
Warrant liability Series D | Scenario Based Method | Qualified Financing Scenario              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.075   0.15     0.50  
Warrant liability Series D | Scenario Based Method | Dissolution Scenario              
FAIR VALUE MEASURES              
Convertible promissory note, Measurement Input 0.075   0.10     0.25