I’m dumb and don’t understand the distinction you’re making. elem.style.setProperty(‘—var-name’, newValue); … will set a new value for the “constant”. The

I’m dumb and don’t understand the distinction you’re making. elem.style.setProperty(‘—var-name’, newValue); … will set a new value for the “constant”. The element will rerender with the new value. You can animate/automate these changes and the element will continue to rerebder with the updated value. To me, that justifies the name “variable” from the perspective of the CSS.