Function disabled_rule 

pub fn disabled_rule(selector: &str, depth: Depth) -> String

Present, visible, and not answering.

Matches the ARIA attribute as well as the pseudo-class, because :disabled only matches form elements and half the things this crate emits are not one: a div carrying .chip or .tab can never be :disabled. Keying on the accessible state is the pattern [field_rules] already establishes for aria-invalid, on the reasoning that one fact read by both the styling and the accessibility tree cannot drift from itself.

The rest depth is re-asserted rather than assumed, because this rule has to beat the hover and pressed rules above it. It does that on source order at equal specificity, not by out-specifying them: every rule this function’s caller emits is (0,2,0), and adding a :not(:disabled) anywhere would raise one of them and have to be unpicked when this output moves inside its own cascade layer.