/* The template-part wrapper must stick, so its height does not limit travel. */
html:has(.wp-site-blocks > header.wp-block-template-part .imb-site-header) {
	--imb-sticky-top: var(--wp-admin--admin-bar--height, 0px);

	scroll-padding-top: calc(var(--imb-sticky-header-height, 16rem) + var(--imb-sticky-top) + 1rem);
}

.wp-site-blocks > header.wp-block-template-part:has(.imb-site-header) {
	position: sticky;
	z-index: 50;
	top: var(--imb-sticky-top, 0);
}

/* WordPress's narrow-screen admin toolbar scrolls away with the document. */
@media (width <= 600px) {
	html:has(.wp-site-blocks > header.wp-block-template-part .imb-site-header) {
		--imb-sticky-top: 0px;
	}
}