>This is missing a "if variable equals" imho.

This is exactly what it does not need. SASS style conditional CSS is a complete nightmare to maintain. The declarative nature is one of its greatest strengths.

Did you guys read the docs? It literally does have this albeit the syntax is a bit odd:

if(style(--foo: bar): baz)

Is how you test if variable --foo is equal to "bar"

See https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/V...