/*
 * Atom — section flush.
 * Zeroes the top margin on top-level blocks and template-part children so
 * sections butt together. A real class (0,1,0) beats WP's :where() block-gap;
 * inner gaps stay, and each section's own padding carries the rhythm.
 */
.wp-site-blocks > *,
.wp-block-template-part > * {
	margin-block-start: 0;
}