| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue from customers | — | — | — | — | |||||||||||
| Operating expenses: | |||||||||||||||
| Research and development | |||||||||||||||
| General and administrative | |||||||||||||||
| Total operating expenses | |||||||||||||||
| % of revenue | — | — | — | — | |||||||||||
| Loss from operations | |||||||||||||||
| % of revenue | — | — | — | — | |||||||||||
| Other income, net: | |||||||||||||||
| R&D tax incentive | |||||||||||||||
| Foreign exchange gains/(losses) | |||||||||||||||
| Interest expense | — | — | — | — | |||||||||||
| Interest income | |||||||||||||||
| Change in fair value of convertible rights | — | — | — | — | |||||||||||
| Change in fair value of warrant liabilities | — | — | |||||||||||||
| Warrant issuance costs | — | — | |||||||||||||
| Loss on extinguishment | — | — | — | — | |||||||||||
| ELOC commitment fee | — | — | — | — | |||||||||||
| Share of earnings (loss) of joint venture | |||||||||||||||
| Total other income/(expenses), net | |||||||||||||||
| Loss before income tax expense | |||||||||||||||
| Net loss | |||||||||||||||
| % of revenue | — | — | — | — | |||||||||||
| Net loss per share: Basic (in USD per share) | — | ||||||||||||||
| Net loss per share: diluted (in USD per share) | — |