:root {
	--firebrick: rgba(255, 0, 0, 0.9);
	--firebrick-a50: rgb(230, 13, 13);

	--opacity-50: 50%;
	--firebrick-a50-var: color-mix(in lch, red var(--opacity-50));
}

@supports (color: color-mix(in lch, red)) {
:root {
	--firebrick: color-mix(in lch, red 90%);
	--firebrick-a50: color-mix(in srgb, red 90%, lime, blue);
}
}
