/* Tank Transport Control Room: reader-facing discovery components. */
.ttcr-smart-article-rail ul,
.ttcr-topic-navigator ul,
.ttcr-article-toc ol {
	list-style: none;
	margin: 0;
	padding: 0;
}

.ttcr-public-heading {
	margin: 0 0 .75em;
}

.ttcr-smart-article-rail ul {
	display: grid;
	gap: 0;
}

.ttcr-smart-rail-item {
	display: grid;
	grid-template-columns: 64px minmax(0, 1fr);
	gap: 10px;
	align-items: start;
	padding: 10px 0;
	border-bottom: 1px solid rgba(0, 0, 0, .09);
}

.ttcr-smart-rail-item.no-thumbnail {
	grid-template-columns: minmax(0, 1fr);
}

.ttcr-smart-article-rail-comfortable .ttcr-smart-rail-item {
	grid-template-columns: 84px minmax(0, 1fr);
	gap: 12px;
	padding: 13px 0;
}

.ttcr-smart-rail-item:last-child {
	border-bottom: 0;
}

.ttcr-smart-rail-thumb {
	display: block;
	aspect-ratio: 1.25 / 1;
	overflow: hidden;
	background: rgba(0, 0, 0, .04);
}

.ttcr-smart-rail-thumb:empty {
	display: none;
}

.ttcr-smart-rail-thumb img {
	display: block;
	width: 100%;
	height: 100%;
	margin: 0;
	object-fit: cover;
}

.ttcr-smart-rail-copy {
	min-width: 0;
}

.ttcr-smart-rail-title {
	display: block;
	font-weight: 600;
	line-height: 1.32;
	text-decoration: none;
}

.ttcr-smart-rail-meta {
	display: flex;
	gap: 6px;
	align-items: center;
	flex-wrap: wrap;
	margin: 0 0 3px;
	font-size: .72em;
	line-height: 1.3;
	letter-spacing: .02em;
	text-transform: uppercase;
	opacity: .76;
}

.ttcr-topic-navigator-list .ttcr-topic-group + .ttcr-topic-group {
	margin-top: 14px;
}

.ttcr-topic-navigator h3 {
	margin: 0 0 6px;
	font-size: .78em;
	letter-spacing: .05em;
	text-transform: uppercase;
	opacity: .72;
}

.ttcr-topic-navigator-list li {
	border-bottom: 1px solid rgba(0, 0, 0, .08);
}

.ttcr-topic-navigator-list li:last-child {
	border-bottom: 0;
}

.ttcr-topic-navigator-list a {
	display: flex;
	justify-content: space-between;
	gap: 8px;
	padding: 6px 0;
	line-height: 1.25;
	text-decoration: none;
}

.ttcr-topic-navigator a small {
	font-size: .75em;
	opacity: .65;
}

.ttcr-topic-view-all {
	margin: 10px 0 0;
	font-size: .88em;
	font-weight: 600;
}

.ttcr-topic-navigator-chips ul {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
}

.ttcr-topic-navigator-chips li {
	margin: 0;
}

.ttcr-topic-navigator-chips a {
	display: inline-flex;
	gap: 5px;
	align-items: center;
	padding: 5px 9px;
	border: 1px solid rgba(0, 0, 0, .13);
	border-radius: 999px;
	line-height: 1.2;
	text-decoration: none;
}

.ttcr-article-toc {
	clear: both;
	margin: 1.35em 0 1.6em;
	border: 1px solid rgba(0, 0, 0, .13);
	border-radius: 4px;
	background: rgba(0, 0, 0, .025);
}

.ttcr-article-toc details {
	margin: 0;
}

.ttcr-article-toc summary {
	display: flex;
	justify-content: space-between;
	gap: 12px;
	align-items: center;
	padding: 12px 14px;
	cursor: pointer;
	font-weight: 700;
	line-height: 1.25;
}

.ttcr-article-toc summary small {
	font-size: .75em;
	font-weight: 400;
	opacity: .65;
}

.ttcr-article-toc ol {
	padding: 2px 16px 14px 34px;
	counter-reset: ttcr-toc;
}

.ttcr-article-toc li {
	position: relative;
	margin: 0;
	padding: 4px 0;
	line-height: 1.35;
	counter-increment: ttcr-toc;
}

.ttcr-article-toc li::before {
	position: absolute;
	right: calc(100% + 7px);
	content: counter(ttcr-toc) ".";
	opacity: .55;
}

.ttcr-article-toc .ttcr-toc-level-3 {
	padding-left: 14px;
	font-size: .94em;
}

.ttcr-article-toc a {
	text-decoration: none;
}

.ttcr-article-toc-widget {
	margin: 0;
	border: 0;
	background: transparent;
}

.ttcr-article-toc-widget ol {
	padding: 0;
}

.ttcr-article-toc-widget li {
	padding: 5px 0 5px 18px;
	border-bottom: 1px solid rgba(0, 0, 0, .08);
}

.ttcr-article-toc-widget li:last-child {
	border-bottom: 0;
}

.ttcr-article-toc-widget li::before {
	left: 0;
	right: auto;
}


:where(h2, h3)[id^="ttcr-"] {
	scroll-margin-top: 90px;
}

@media (max-width: 782px) {
	.ttcr-smart-article-rail-comfortable .ttcr-smart-rail-item {
		grid-template-columns: 72px minmax(0, 1fr);
	}
	.ttcr-article-toc {
		margin: 1.1em 0 1.35em;
	}
	.ttcr-article-toc summary {
		padding: 11px 12px;
	}
}