v3.26.3
Convertible Preferred Stock - Schedule of Preferred Stock (Details) - USD ($)
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Class of Stock [Line Items]                
Preferred stock, shares authorized 10,000,000     78,762,142        
Preferred stock, shares issued 0     78,762,142        
Preferred stock, shares outstanding 0     78,762,142        
Carrying value       $ 992,363,123        
Liquidation preference       $ 959,959,576        
Common stock issuable upon conversion       84,596,391        
Series A-1 Convertible Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares authorized       30,000,000        
Preferred stock, shares issued       30,000,000        
Preferred stock, shares outstanding 0 0 30,000,000 30,000,000 30,000,000 30,000,000 30,000,000 30,000,000
Carrying value $ 0 $ 0 $ 294,358,000 $ 294,357,583 $ 294,358,000 $ 294,358,000 $ 294,358,000 $ 294,358,000
Liquidation preference       $ 300,000,000        
Common stock issuable upon conversion       30,000,000        
Series A-2 Voting Convertible Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares authorized       4,968,789        
Preferred stock, shares issued       4,968,789        
Preferred stock, shares outstanding       4,968,789        
Carrying value       $ 84,500,659        
Liquidation preference       $ 49,687,890        
Common stock issuable upon conversion       9,477,719        
Series A-2 Nonvoting Convertible Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares authorized       708,814        
Preferred stock, shares issued       708,814        
Preferred stock, shares outstanding       708,814        
Carrying value       $ 11,447,346        
Liquidation preference       $ 7,088,140        
Common stock issuable upon conversion       2,034,133        
Total Series A-2 Convertible Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares authorized       5,677,603        
Preferred stock, shares issued       5,677,603        
Preferred stock, shares outstanding       5,677,603        
Carrying value       $ 95,948,005        
Liquidation preference       $ 56,776,030        
Common stock issuable upon conversion       11,511,852        
Series B Convertible Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares authorized 0     43,084,539        
Preferred stock, shares issued 0     43,084,539        
Preferred stock, shares outstanding 0 0 43,084,539 43,084,539        
Carrying value $ 0 $ 0 $ 602,058,000 $ 602,057,535        
Liquidation preference       $ 603,183,546        
Common stock issuable upon conversion       43,084,539