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ident() within var()

Spec: css-variables-2

• var-ident-function.html

Parse checks (@supports)

• supports --foo: var(ident("--bar"))

Computed value checks (JS)

• var(ident(...)) resolves referenced custom property
• ident() remains unresolved in unregistered custom property
• invalid custom property lookup via ident() yields empty
• invalid lookup fallback works

Demo