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Stock-Based Compensation - Additional Information (Details)		3 Months Ended		6 Months Ended
	Apr. 30, 2026 USD ($) shares	Jun. 30, 2026 USD ($) Installment $ / shares shares	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) Installment $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Jan. 31, 2026 shares	Dec. 31, 2025 $ / shares shares	Dec. 31, 2024 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options		12,233,799		12,233,799			8,569,619
Exercise price \| $ / shares		$ 8.55		$ 8.55			$ 4.6
Number of stock options granted				4,211,692
Stock-based compensation expense \| $		$ 36,863,000	$ 1,756,000	$ 39,432,000	$ 3,375,000
Common Stock [Member] \| 2026 Equity incentive plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, initially reserved for issuance						6,020,000
Common Stock [Member] \| 2026 Employee stock purchase plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, initially reserved for issuance	510,000	0		0
Board of Directors and Chief Executive Officer \| 2026 Equity incentive plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of stock options granted		687,816
Fully vested equity awards granted	2,477,978
Stock ownership percentage	12.50%
Non-cash stock-based compensation expense \| $	$ 32,200,000	$ 2,100,000
Equity Incentive Plans
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options								152,514
Cliff vesting period				1 year
Vesting period for stock options issued under the plan				4 years
Equity Incentive Plans \| Performance-Based Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Exercise price \| $ / shares								$ 7.39
Number of stock options granted				76,256
Shares available for future grants								228,770
Number of annual installments vested \| Installment		3		3
Stock-based compensation expense \| $				$ 600,000
Equity Incentive Plans \| Stock Option Activity
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized stock-based compensation expense \| $		$ 24,600,000		$ 24,600,000
Unrecognized stock-based compensation expense, remaining weighted average period				2 years 7 months 6 days
Weighted-average grant date fair value of options granted \| $ / shares				$ 11.88	$ 5.66
2024 Plan Restricted Stock Awards \| Board of Directors and Chief Executive Officer
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock awards, granted				1,990,001
2024 Plan Restricted Stock Awards \| Service-Based Vesting \| Board of Directors and Chief Executive Officer
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period for stock options issued under the plan				3 years
Restricted stock awards, granted				796,000
2024 Plan Restricted Stock Awards \| Performance Based Vesting \| Board of Directors and Chief Executive Officer
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock awards, granted				1,194,001
2024 Plan Restricted Stock Awards \| Unvested Amount Subject to Accelerated Vesting Upon Close of Series B Financing \| Board of Directors and Chief Executive Officer
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unvested amounts, percentage				50.00%
2024 Plan Restricted Stock Awards \| Restricted Stock Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized stock-based compensation expense \| $		0		$ 0
Restricted stock awards, granted				0	0
Total fair value of restricted stock awards, vested \| $				$ 500,000	$ 100,000
Stock-based compensation expense \| $		$ 100,000	$ 100,000	$ 500,000	$ 100,000
2024 Plan Restricted Stock Awards \| Restricted Stock Awards \| Unvested Amount Subject to Future Acceleration Upon Close of Initial Public Offering \| Board of Directors and Chief Executive Officer \| IPO
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unvested amounts, percentage				50.00%