/* Air Today field guides: one editorial system for the library and every article. */
.at-blog-library,
.at-editorial-article {
	--ed-ink: #092f41;
	--ed-muted: #526570;
	--ed-line: #d4e0e5;
	--ed-surface: #f0f5f6;
	--ed-accent: #ff702e;
	background: #fff;
	color: var(--ed-ink);
}

.at-blog-library .at-page-shell--resource,
.at-editorial-article .at-page-shell--resource {
	box-sizing: border-box;
	max-width: 1240px;
	padding-block: clamp(34px, 5vw, 76px) 120px;
	width: min(100% - 48px, 1240px);
}

.at-blog-library .at-page-shell--resource > .at-breadcrumbs,
.at-editorial-article .at-page-shell--resource > .at-breadcrumbs {
	color: var(--ed-muted);
	font-size: 14px;
	max-width: none;
}

.at-blog-library .at-page-shell--resource > .wp-block-post-title,
.at-editorial-article .at-page-shell--resource > .wp-block-post-title {
	color: var(--ed-ink);
	font-size: clamp(44px, 5.8vw, 78px);
	font-weight: 800;
	letter-spacing: -.035em;
	line-height: 1.06;
	margin: 26px 0 20px;
	max-width: 19ch;
}

.at-blog-library .at-page-shell--resource > .wp-block-post-content,
.at-editorial-article .at-page-shell--resource > .wp-block-post-content {
	box-sizing: border-box;
	max-width: none !important;
	width: 100%;
}

.at-blog-library .at-page-shell--resource > .wp-block-post-content > *,
.at-editorial-article .at-page-shell--resource > .wp-block-post-content > * {
	max-width: none;
}

.at-blog-library .at-editorial-date,
.at-blog-library .at-editorial-back {
	display: none;
}

.at-blog-library .at-blog-index {
	gap: 0;
	max-width: none;
}

.at-blog-library .at-blog-index__introduction {
	color: var(--ed-muted);
	font-size: clamp(18px, 1.8vw, 23px);
	line-height: 1.55;
	max-width: 56ch;
}

.at-blog-index__topics {
	background: var(--ed-surface);
	border-radius: 16px;
	margin-top: clamp(38px, 5vw, 68px);
	padding: clamp(22px, 3vw, 34px);
}

.at-blog-index__topics-label,
.at-blog-topic__eyebrow {
	color: #315f71;
	font-size: 12px;
	font-weight: 800;
	letter-spacing: .11em;
	text-transform: uppercase;
}

.at-blog-index__topic-links {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin-top: 16px;
}

.at-blog-index__topic-links a {
	align-items: center;
	background: #fff;
	border: 1px solid #c5d5db;
	border-radius: 8px;
	color: var(--ed-ink);
	display: inline-flex;
	font-size: 14px;
	font-weight: 750;
	gap: 16px;
	min-height: 48px;
	padding: 10px 14px;
	text-decoration: none;
	transition: border-color .2s ease, background .2s ease, transform .2s ease;
}

.at-blog-index__topic-links a:hover,
.at-blog-index__topic-links a:focus-visible {
	background: #fff8f3;
	border-color: var(--ed-accent);
	transform: translateY(-2px);
}

.at-blog-index__topic-links a span {
	background: #e8f0f2;
	border-radius: 100px;
	font-size: 12px;
	min-width: 22px;
	padding: 3px 6px;
	text-align: center;
}

.at-blog-topic {
	border-top: 1px solid var(--ed-line);
	margin-top: clamp(50px, 6vw, 82px);
	padding-top: clamp(28px, 4vw, 46px);
	scroll-margin-top: 110px;
}

.at-blog-topic__heading {
	align-items: end;
	display: flex;
	gap: 28px;
	justify-content: space-between;
	margin-bottom: 28px;
}

.at-blog-topic__heading h2 {
	font-size: clamp(29px, 3vw, 42px);
	letter-spacing: -.03em;
	line-height: 1.12;
	margin: 8px 0 0;
}

.at-blog-topic__heading > p {
	color: var(--ed-muted);
	font-size: 15px;
	line-height: 1.5;
	margin: 0 0 4px;
	max-width: 33ch;
}

.at-blog-library .at-blog-index__grid {
	gap: 24px;
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.at-blog-library .at-blog-card {
	background: #fff;
	border: 1px solid var(--ed-line);
	border-radius: 16px;
	box-shadow: none;
	height: 100%;
	min-width: 0;
	transition: border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}

.at-blog-library .at-blog-card:hover,
.at-blog-library .at-blog-card:focus-within {
	border-color: #a8c4d0;
	box-shadow: 0 14px 36px #092f4114;
	transform: translateY(-3px);
}

.at-blog-library .at-blog-card__media {
	aspect-ratio: 16 / 9;
	min-width: 0;
}

.at-blog-library .at-blog-card__media img {
	display: block;
	object-fit: cover;
	transition: transform .45s ease;
}

.at-blog-library .at-blog-card:hover .at-blog-card__media img {
	transform: scale(1.035);
}

.at-blog-library .at-blog-card__body {
	box-sizing: border-box;
	gap: 14px;
	padding: clamp(23px, 2.5vw, 34px);
}

.at-blog-library .at-blog-card__featured {
	color: #a04317;
}

.at-blog-library .at-blog-card__title {
	font-size: clamp(22px, 2vw, 28px);
	letter-spacing: -.025em;
	line-height: 1.23;
}

.at-blog-library .at-blog-card__title a {
	color: var(--ed-ink);
	text-decoration: none;
}

.at-blog-library .at-blog-card__title a:hover {
	text-decoration: underline;
}

.at-blog-library .at-blog-card__description {
	color: var(--ed-muted);
	font-size: 15px;
	line-height: 1.55;
}

.at-blog-library .at-blog-card__review {
	color: var(--ed-muted);
	font-size: 13px;
}

.at-blog-library .at-blog-card__action {
	border-bottom: 2px solid var(--ed-accent);
	color: var(--ed-ink);
	font-size: 14px;
	min-height: 38px;
	text-decoration: none;
}

.at-blog-library .at-blog-index__grid--lead > .at-blog-card--featured {
	grid-column: 1 / -1;
	grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
	min-height: 390px;
}

.at-blog-library .at-blog-card--featured .at-blog-card__media {
	aspect-ratio: auto;
	height: 100%;
}

.at-blog-library .at-blog-card--featured .at-blog-card__title {
	font-size: clamp(29px, 3.3vw, 43px);
}

.at-blog-library .at-blog-topic--comfort .at-blog-card,
.at-blog-library .at-blog-topic--ductwork .at-blog-card {
	grid-column: 1 / -1;
	grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
}

.at-blog-library .at-blog-topic--comfort .at-blog-card__media,
.at-blog-library .at-blog-topic--ductwork .at-blog-card__media {
	aspect-ratio: auto;
	height: 100%;
	min-height: 290px;
}

.at-blog-library .at-blog-index__standards {
	background: var(--ed-surface);
	border: 0;
	border-radius: 14px;
	margin-top: 76px;
	padding: 30px 36px;
}

.at-blog-library .at-blog-index__standards h2 {
	font-size: 23px;
}

.at-blog-library .at-blog-index__standards p {
	color: var(--ed-muted);
	font-size: 15px;
	max-width: 74ch;
}

/* The former static spotlight is represented by the integrated Ductwork topic card. */
.at-blog-library .at-duct-guide {
	display: none;
}

.at-editorial-article .at-page-shell--resource > .wp-block-post-title {
	margin-bottom: 18px;
	max-width: 21ch;
}

.at-editorial-article .at-editorial-date {
	color: var(--ed-muted);
	font-size: 14px;
	margin: 0 0 6px;
}

.at-editorial-article .at-editorial-date::before {
	content: 'Published ';
}

.at-editorial-article .at-editorial-back {
	font-size: 14px;
	font-weight: 750;
	margin: 22px 0 40px;
}

.at-editorial-article .at-editorial-back a {
	color: var(--ed-ink);
	text-decoration-color: var(--ed-accent);
	text-decoration-thickness: 2px;
}

.at-editorial-article .wp-block-post-content > .at-article-category {
	color: #a04317;
	font-size: 12px;
	font-weight: 850;
	letter-spacing: .12em;
	margin: 0 0 15px;
	text-transform: uppercase;
}

.at-editorial-article .wp-block-post-content > .at-article-answer {
	background: var(--ed-surface);
	border-radius: 14px;
	margin: 0 0 36px;
	max-width: 930px;
	padding: clamp(24px, 3vw, 38px);
}

.at-editorial-article .at-article-answer p {
	font-size: clamp(18px, 1.65vw, 22px);
	font-weight: 650;
	line-height: 1.55;
	margin: 0;
}

.at-editorial-article .wp-block-post-content > .at-article-media {
	margin: 0 0 28px;
	max-width: 1100px;
	overflow: hidden;
	width: 100%;
}

.at-editorial-article .wp-block-post-content > .at-article-media img {
	border-radius: 14px;
	display: block;
	max-height: 610px;
	object-fit: cover;
	width: 100%;
}

.at-article-toc {
	border-bottom: 1px solid var(--ed-line);
	border-top: 1px solid var(--ed-line);
	margin: 48px 0 32px;
	max-width: 1100px;
	padding: 28px 0;
}

.at-article-toc h2 {
	font-size: 18px;
	letter-spacing: -.01em;
	margin: 0 0 16px;
}

.at-article-toc ol {
	display: grid;
	gap: 8px 28px;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	list-style: none;
	margin: 0;
	padding: 0;
}

.at-article-toc a {
	color: var(--ed-ink);
	display: block;
	font-size: 15px;
	font-weight: 650;
	padding: 8px 0;
	text-decoration-color: #a7bdc6;
}

.at-article-toc a:hover {
	text-decoration-color: var(--ed-accent);
}

.at-editorial-article .at-article-section,
.at-editorial-article .at-article-related,
.at-editorial-article .at-article-sources,
.at-editorial-article .at-article-cta {
	box-sizing: border-box;
	max-width: 880px !important;
}

.at-editorial-article .wp-block-post-content {
	counter-reset: at-article-section;
}

.at-editorial-article .at-article-section {
	border-top: 1px solid var(--ed-line);
	counter-increment: at-article-section;
	margin: 0 0 0 clamp(0px, 8vw, 110px);
	padding: 52px 0 62px;
	scroll-margin-top: 100px;
}

.at-editorial-article .at-article-section h2 {
	font-size: clamp(30px, 3vw, 41px);
	letter-spacing: -.03em;
	line-height: 1.15;
	margin: 0 0 25px;
}

.at-editorial-article .at-article-section h2::before {
	color: #a04317;
	content: counter(at-article-section, decimal-leading-zero) ' / ';
	display: block;
	font-size: 12px;
	font-weight: 850;
	letter-spacing: .12em;
	margin-bottom: 16px;
}

.at-editorial-article .at-article-section p,
.at-editorial-article .at-article-section li {
	color: #263e4a;
	font-size: clamp(16px, 1.35vw, 18px);
	line-height: 1.76;
}

.at-editorial-article .at-article-section p {
	margin-block: 0 20px;
}

.at-editorial-article .at-article-section li + li {
	margin-top: 12px;
}

.at-editorial-article .at-article-section .at-article-media {
	margin-top: 28px;
}

.at-editorial-article .at-article-section .at-article-media img {
	border-radius: 12px;
	max-height: 510px;
	object-fit: cover;
	width: 100%;
}

.at-editorial-article .at-article-safety {
	background: #fff1e9;
	border-radius: 12px;
	margin-top: 28px;
	padding: 22px 26px;
}

.at-editorial-article .at-article-safety p {
	color: #5d321d;
	font-size: 15px;
	margin: 0;
}

.at-editorial-article .at-article-related {
	background: var(--ed-ink);
	border-radius: 16px;
	color: #fff;
	margin: 32px 0 0 clamp(0px, 8vw, 110px);
	padding: clamp(28px, 4vw, 44px);
}

.at-editorial-article .at-article-related h2 {
	color: #fff;
	font-size: clamp(25px, 2.6vw, 32px);
	margin-top: 0;
}

.at-editorial-article .at-article-related a {
	color: #fff;
	text-decoration-color: var(--ed-accent);
}

.at-editorial-article .at-article-related li {
	margin-bottom: 12px;
}

.at-editorial-article .at-article-sources {
	border-top: 1px solid var(--ed-line);
	margin: 66px 0 0 clamp(0px, 8vw, 110px);
	padding-top: 24px;
}

.at-editorial-article .at-article-sources h2 {
	font-size: 22px;
}

.at-editorial-article .at-article-sources li {
	color: var(--ed-muted);
	font-size: 14px;
	line-height: 1.6;
	margin-bottom: 10px;
}

.at-editorial-article .at-article-sources a {
	color: var(--ed-ink);
}

.at-editorial-article .at-article-cta {
	background: var(--ed-surface);
	border-radius: 16px;
	margin: 60px 0 0 clamp(0px, 8vw, 110px);
	padding: clamp(26px, 4vw, 42px);
}

.at-editorial-article .at-article-cta > p:first-child {
	font-size: clamp(19px, 1.8vw, 24px);
	font-weight: 750;
	line-height: 1.45;
	margin: 0 0 20px;
}

.at-editorial-article .at-article-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin-top: 26px;
}

.at-editorial-article .at-article-actions a {
	align-items: center;
	border-radius: 8px;
	display: inline-flex;
	font-size: 15px;
	font-weight: 800;
	justify-content: center;
	min-height: 52px;
	padding: 12px 20px;
	text-decoration: none;
}

.at-editorial-article .at-article-actions .at-request-service__link {
	background: var(--ed-accent);
	border: 1px solid var(--ed-accent);
	color: var(--ed-ink);
}

.at-editorial-article .at-article-actions .at-phone-link {
	background: #fff;
	border: 1px solid #829ca7;
	color: var(--ed-ink);
}

/* A consistent reading column below the wider magazine headline and photograph. */
.at-editorial-article .at-editorial-date,
.at-editorial-article .at-editorial-back,
.at-editorial-article .wp-block-post-content > .at-article-category,
.at-editorial-article .wp-block-post-content > .at-article-answer,
.at-editorial-article .at-article-section,
.at-editorial-article .at-article-related,
.at-editorial-article .at-article-sources,
.at-editorial-article .at-article-cta {
	margin-left: clamp(0px, 14vw, 176px) !important;
	margin-right: 0 !important;
}

.at-editorial-article .wp-block-post-content > .at-article-answer {
	max-width: 880px !important;
}

@media (max-width: 781px) {
	.at-blog-library .at-page-shell--resource,
	.at-editorial-article .at-page-shell--resource {
		padding-bottom: 150px;
		width: calc(100% - 36px);
	}

	.at-blog-library .at-page-shell--resource > .wp-block-post-title,
	.at-editorial-article .at-page-shell--resource > .wp-block-post-title {
		font-size: clamp(38px, 9vw, 55px);
	}

	.at-blog-topic__heading {
		align-items: start;
		flex-direction: column;
		gap: 8px;
	}

	.at-blog-library .at-blog-index__grid,
	.at-blog-library .at-blog-index__grid--lead > .at-blog-card--featured,
	.at-blog-library .at-blog-topic--comfort .at-blog-card,
	.at-blog-library .at-blog-topic--ductwork .at-blog-card {
		grid-template-columns: 1fr;
	}

	.at-blog-library .at-blog-card--featured .at-blog-card__media,
	.at-blog-library .at-blog-topic--comfort .at-blog-card__media,
	.at-blog-library .at-blog-topic--ductwork .at-blog-card__media {
		aspect-ratio: 16 / 10;
		min-height: 0;
	}

	.at-blog-library .at-blog-card--featured .at-blog-card__title {
		font-size: 28px;
	}

	.at-blog-index__topic-links a {
		flex: 1 1 auto;
	}

	.at-editorial-article .at-article-section,
	.at-editorial-article .at-article-related,
	.at-editorial-article .at-article-sources,
	.at-editorial-article .at-article-cta {
		margin-left: 0 !important;
	}

	.at-editorial-article .at-editorial-date,
	.at-editorial-article .at-editorial-back,
	.at-editorial-article .wp-block-post-content > .at-article-category,
	.at-editorial-article .wp-block-post-content > .at-article-answer {
		margin-left: 0 !important;
	}

	.at-editorial-article .at-article-section {
		padding-block: 36px 44px;
	}

	.at-article-toc ol {
		grid-template-columns: 1fr;
	}

	.at-editorial-article .at-article-actions,
	.at-editorial-article .at-article-actions > *,
	.at-editorial-article .at-article-actions a {
		width: 100%;
	}
}

@media (prefers-reduced-motion: reduce) {
	.at-blog-library .at-blog-card,
	.at-blog-library .at-blog-card__media img,
	.at-blog-index__topic-links a {
		transition: none;
	}

	.at-blog-library .at-blog-card:hover,
	.at-blog-library .at-blog-index__topic-links a:hover,
	.at-blog-library .at-blog-card:hover .at-blog-card__media img {
		transform: none;
	}
}

/* Native field stories: the same reading and photo system across existing posts. */
.at-editorial-article.single-post .at-page-shell--resource > .wp-block-post-title {
	font-size: clamp(38px, 4.7vw, 62px);
	line-height: 1.1;
	max-width: 24ch;
}

.at-editorial-article.single-post .wp-block-post-content > :is(p, h2, h3, h4, ul, ol, blockquote, details) {
	box-sizing: border-box;
	max-width: 830px !important;
	margin-left: auto;
	margin-right: auto;
}

.at-editorial-article.single-post .wp-block-post-content > p {
	color: #263e4a;
	font-size: clamp(17px, 1.35vw, 19px);
	line-height: 1.76;
	margin-block: 0 22px;
}

.at-editorial-article.single-post .wp-block-post-content > p:first-child {
	color: #287487;
	font-size: 13px;
	font-weight: 800;
	letter-spacing: .09em;
	line-height: 1.45;
	margin-bottom: 18px;
	text-transform: uppercase;
}

.at-editorial-article.single-post .wp-block-post-content > p:nth-child(2) {
	color: var(--ed-ink);
	font-size: clamp(20px, 1.8vw, 24px);
	font-weight: 550;
	line-height: 1.58;
}

.at-editorial-article.single-post .wp-block-post-content > h2 {
	border-top: 1px solid var(--ed-line);
	color: var(--ed-ink);
	font-size: clamp(30px, 3vw, 40px);
	letter-spacing: -.035em;
	line-height: 1.18;
	margin-top: 66px;
	margin-bottom: 23px;
	padding-top: 30px;
}

.at-editorial-article.single-post .wp-block-post-content > h3 {
	color: var(--ed-ink);
	font-size: clamp(21px, 2vw, 26px);
	line-height: 1.28;
	margin-top: 34px;
	margin-bottom: 12px;
}

.at-editorial-article.single-post .wp-block-post-content > :is(ul, ol) {
	color: #263e4a;
	font-size: 18px;
	line-height: 1.7;
	padding-left: 27px;
}

.at-editorial-article.single-post .wp-block-post-content > :is(ul, ol) li + li {
	margin-top: 10px;
}

.at-editorial-article.single-post .wp-block-post-content > figure.wp-block-image {
	align-items: center;
	background: #f2f7f8;
	border: 1px solid #d4e0e5;
	border-radius: 18px;
	box-shadow: 0 14px 36px #092f4110;
	box-sizing: border-box;
	display: grid;
	grid-template-columns: minmax(0, 1fr) minmax(195px, 31%);
	margin: 38px auto 48px !important;
	max-width: 950px !important;
	min-height: 310px;
	overflow: hidden;
	width: 100%;
}

.at-editorial-article.single-post .wp-block-post-content > figure.wp-block-image > img {
	background: #e8f0f2;
	box-sizing: border-box;
	display: block;
	height: 410px;
	max-height: 410px;
	max-width: 100%;
	object-fit: contain;
	padding: 14px;
	width: 100%;
}

.at-editorial-article.single-post .wp-block-post-content > figure.wp-block-image > figcaption {
	border-left: 1px solid #d4e0e5;
	color: #3a5966;
	font-size: 15px;
	line-height: 1.55;
	margin: 0;
	padding: 24px;
	text-align: left;
}

.at-editorial-article.single-post .wp-block-post-content > figure.wp-block-image > figcaption::before {
	color: #287487;
	content: 'FROM THE FIELD';
	display: block;
	font-size: 11px;
	font-weight: 850;
	letter-spacing: .12em;
	margin-bottom: 13px;
}

.at-editorial-article.single-post .wp-block-post-content > details {
	background: #f5f8f9;
	border: 1px solid #d4e0e5;
	border-radius: 12px;
	color: #263e4a;
	font-size: 17px;
	line-height: 1.65;
	margin-block: 10px;
	padding: 17px 22px;
}

.at-editorial-article.single-post .wp-block-post-content > details summary {
	color: var(--ed-ink);
	cursor: pointer;
	font-weight: 750;
}

.at-editorial-article.single-post .wp-block-post-content > details p {
	margin-bottom: 0;
}

@media (max-width: 760px) {
	.at-editorial-article.single-post .wp-block-post-content > figure.wp-block-image {
		grid-template-columns: 1fr;
		min-height: 0;
	}

	.at-editorial-article.single-post .wp-block-post-content > figure.wp-block-image > img {
		height: auto;
		max-height: 360px;
		min-height: 220px;
	}

	.at-editorial-article.single-post .wp-block-post-content > figure.wp-block-image > figcaption {
		border-left: 0;
		border-top: 1px solid #d4e0e5;
		padding: 18px 21px 20px;
	}

	.at-editorial-article.single-post .wp-block-post-content > h2 {
		margin-top: 46px;
	}
}