What version of Tailwind CSS are you using?

v4.3.0

What build tool (or framework if it abstracts the build tool) are you using?

Vite 8.0.12

What version of Node.js are you using?

v22.18.0

What browser are you using?

Chrome

What operating system are you using?

Windows

Reproduction URL

https://stackblitz.com/edit/vitejs-vite-oebqbbpw?file=src%2FApp.vue

Describe your issue

Using @reference combined with @apply syntax within a style tag with lang="scss" is invalid