No Core Part Style Imports

Feature and component styles are not permitted to be imported from core repositories or part repositories. Keep their CSS in the runnable panel, site, or owning theme that uses it. A core or part component must not import feature or component CSS; its consumer supplies the appearance through local styles. Each theme owns its own feature styles, including styles for components supplied by a part. Core build infrastructure CSS, such as the Tailwind entry, cascade layer order, breakpoint definitions, and framework utilities, may remain in core.

Fix

Move the stylesheet into each consuming runnable or theme, import it from the local style entry, and remove the import and stylesheet from the core or part repository.