Description of Business, Organization, and Liquidity (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		12 Months Ended		28 Months Ended
	Sep. 16, 2024	Dec. 31, 2025	Sep. 30, 2024	Dec. 31, 2025	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2024
Subsidiary or Equity Method Investee [Line Items]
Common stock, par value (in usd per share)		$ 0.0001		$ 0.0001			$ 0.0001
Proceeds from issuance on common stock, net of issuance costs	$ 332,400		$ 332,400
Cash, cash equivalents and marketable securities		$ 414,800		$ 414,800
Accumulated deficit		$ (358,966)		$ (358,966)			$ (221,016)
IPO
Subsidiary or Equity Method Investee [Line Items]
Number of shares issued in transaction (in shares)	20,125,000
Common stock, par value (in usd per share)	$ 0.0001
Public offering price (in usd per share)	$ 18
ATM Program
Subsidiary or Equity Method Investee [Line Items]
Number of shares issued in transaction (in shares)		1,604,000		1,604,000
Common stock, par value (in usd per share)		$ 0.0001		$ 0.0001
Sale of stock, consideration received on transaction		$ 29,500		$ 29,500
Seed Series Redeemable Convertible Preferred Stock
Subsidiary or Equity Method Investee [Line Items]
Shares issued (in shares)						81,790,144
Series B Redeemable Convertible Preferred Stock
Subsidiary or Equity Method Investee [Line Items]
Shares issued (in shares)					105,595,101
Series C Redeemable Convertible Preferred Stock
Subsidiary or Equity Method Investee [Line Items]
Shares issued (in shares)					119,599,872