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Segment Information - Revenue and non-current assets by regions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of geographical areas [line items] |  |  |
Revenue from external customers | $ 92,390 | $ 15,936 | $ 6,155
Non-current assets | 120,624 | 126,324 |
Hong Kong |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue from external customers | 23,070 | 10,425 | 6,155
Non-current assets | 74,558 | 120,421 |
The United States |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue from external customers | 69,320 | 5,511 | $ 0
Non-current assets | 45,907 | 1,054 |
United Kingdom |  |  |
Disclosure of geographical areas [line items] |  |  |
Non-current assets | 0 | 185 |
Taiwan |  |  |
Disclosure of geographical areas [line items] |  |  |
Non-current assets | 0 | 3,484 |
Rest of the world |  |  |
Disclosure of geographical areas [line items] |  |  |
Non-current assets | $ 159 | $ 1,180 |

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