:root {
	--section-index-height: 52px;
}

.section-index {
	display: flex;
	height: var(--section-index-height);
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	padding: 0 var(--page-gutter, 36px);
	color: inherit;
	font-family: "Courier New", monospace;
	font-size: clamp(8px, 0.62vw, 10px);
	font-weight: 700;
	line-height: 1;
	letter-spacing: 0.045em;
	text-transform: uppercase;
	pointer-events: none;
}

.section-index::before {
	content: "";
	position: absolute;
	left: var(--page-gutter, 36px);
	right: var(--page-gutter, 36px);
	top: 0;
	height: 1px;
	background: currentColor;
	opacity: 0.28;
}

.section-index span {
	white-space: nowrap;
}

.section-index span:last-child {
	text-align: right;
}

@media (max-width: 720px) {
	:root {
		--section-index-height: calc(46px + env(safe-area-inset-bottom));
	}

	.section-index {
		gap: 12px;
		padding: 0 var(--page-gutter, 18px) env(safe-area-inset-bottom);
		font-size: 8px;
		letter-spacing: 0.025em;
	}

	.section-index::before {
		left: var(--page-gutter, 18px);
		right: var(--page-gutter, 18px);
	}
}