SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Supplemental reconciliation (Details) (Imported) - USD ($) |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | ||
| Proceeds from issuance of SAFE agreements | $ 0 | $ 4,700,000 |
| Noncash change in fair value upon issuance (Day 1) | 1,318,000 | |
| Noncash change in fair value subsequent to issuance | 869,000 | |
| Fair value of SAFE | $ 6,887,000 |