v3.26.1
Summary of Significant Accounting Policies - Schedule of Class A Ordinary Shares Subject to Possible Redemption Reflected in the Condensed Balance Sheets (Details) - Mountain Lake Acquisition Corp. - USD ($)
 3 Months Ended 7 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2024
Dec. 31, 2025
Plus:      
Class A ordinary shares subject to possible redemption $ 243,344,159 $ 231,643,853 $ 241,230,572
Class A ordinary shares [Member]      
Plus:      
Accretion of Class A ordinary shares subject to redemption to redemption amount 2,113,587 16,924,324 9,586,719
Class A ordinary shares subject to possible redemption $ 243,344,159 $ 231,643,853 $ 241,230,572