Balance Sheet	Dec. 31, 2025 USD ($)
Current assets
Cash	$ 869,527
Prepaid expenses	223,751
Total current assets	1,093,278
Long term prepaid insurance	152,973
Marketable securities held in Trust Account	290,305,113
Total Assets	291,551,364
Current liabilities
Accrued offering costs	75,000
Accrued expenses	159,029
Total current liabilities	234,029
Deferred underwriting fee	12,250,000
Total Liabilities	12,484,029
Commitments and Contingencies
Class A ordinary shares subject to possible redemption, 28,750,000 shares at redemption value of $10.10 per share	290,305,113
Shareholders’ Deficit
Preference shares, $0.0001 par value; 5,000,000 shares authorized; none issued or outstanding
Additional paid-in capital
Accumulated deficit	(11,238,497)
Total Shareholders’ Deficit	(11,237,778)
Total Liabilities, Class A Ordinary Shares Subject to Possible Redemption, and Shareholders’ Deficit	291,551,364
Class A Ordinary Shares
Shareholders’ Deficit
Ordinary shares, value	0
Class B Ordinary Shares
Shareholders’ Deficit
Ordinary shares, value	$ 719

The amount of accrued offering costs. .

No definition available.

Name:	fcrs_AccruedOfferingCosts
Namespace Prefix:	fcrs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).