/*!
 * seran-related.css — 관련 콘텐츠(태그 교집합 카드 그리드 · 검사 캐러셀) + FAQ 아코디언
 *
 * 모듈: related-content (CONTRACT-FRONT.md §3)
 * 마크업 소유: inc/class-seran-related.php
 *   [case_cards]    → .seran-rel.seran-rel--cases   (칩 필터 + 그리드 + 페이지네이션)
 *   [exam_cards]    → .seran-rel.seran-rel--exams   (뷰포트 + 트랙 + prev/next)
 *   [faq_section] / [faq_item] / [faq_cpt_list] / [faq_list] → .seran-faq
 *
 * 규칙 (CONTRACT-FRONT §0):
 *   - 인라인 <style> 금지. 인스턴스별 열 수는 PHP 가 넘기는 data-cols-desktop /
 *     data-cols-mobile 속성 선택자로만 처리한다(아래 "열 수" 절).
 *   - 하드코딩 hex 금지. 아래 --srl-* 는 seran-tokens.css(static-pages 소유) 토큰의
 *     별칭 레이어이며, 토큰 시트가 아직 실리지 않은 환경에서만 계약서 §1 값이
 *     폴백으로 쓰인다. 컴포넌트 규칙은 --srl-* 만 참조한다.
 *   - Brizy 산 해시 클래스·플레이스홀더·미디어 엔드포인트 0개.
 *
 * 검수 기준(_audit/rendered): equipment_*.html / symptomguide_*.html 의
 *   구 .ccs-* / .ecs-* 치수(칩 34px·카드 radius 20px·본문 padding 30px·아이콘 48px 등)를
 *   그대로 승계하되, 색은 전부 세란 토큰으로 치환했다.
 */

/* ============================================================
   0. 토큰 별칭 + 공통 셸
============================================================ */

.seran-rel,
.seran-faq {
	--srl-accent: var(--seran-orange, #f68b1a);
	--srl-accent-soft: var(--seran-orange-soft, #f6a04d);
	--srl-accent-strong: var(--seran-cta, #d76e0f);
	--srl-olive: var(--seran-olive, #a9bc0d);
	--srl-ink: var(--seran-ink, #333);
	--srl-ink-2: var(--seran-ink-2, #555);
	--srl-ink-3: var(--seran-ink-3, #888);
	--srl-line: var(--seran-line, #ddd);
	--srl-soft: var(--seran-bg-soft, #fafafa);
	--srl-warm: var(--seran-bg-warm, #fff7ef);
	--srl-surface: var(--brand-secondary, #fff);
	--srl-radius: var(--seran-radius, 12px);
	--srl-radius-lg: var(--seran-radius-lg, 20px);
	--srl-font: var(--seran-font, "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Malgun Gothic", sans-serif);
	--srl-font-display: var(--seran-font-display, var(--srl-font));
	--srl-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
	--srl-shadow-lift: 0 14px 34px rgba(0, 0, 0, 0.1);

	--srl-gap: 24px;
	--srl-cols: 2;
	--srl-thumb-ratio: 4 / 3;
	--srl-nav-size: 44px;

	box-sizing: border-box;
	width: 100%;
	max-width: var(--srl-wrap, 100%);
	margin-inline: auto;
	font-family: var(--srl-font);
	color: var(--srl-ink);
	line-height: 1.6;
	scroll-margin-top: 80px;
}

.seran-rel *,
.seran-rel *::before,
.seran-rel *::after,
.seran-faq *,
.seran-faq *::before,
.seran-faq *::after {
	box-sizing: border-box;
}

/* 섹션 헤더 ([case_cards]/[exam_cards] title·subtitle 속성이 있을 때만 출력됨) */
.seran-rel__head {
	margin: 0 0 18px;
}

.seran-rel__title {
	position: relative;
	margin: 0;
	padding-left: 14px;
	font-family: var(--srl-font-display);
	font-size: clamp(22px, 2.4vw, 30px);
	font-weight: 700;
	letter-spacing: -0.02em;
	color: var(--srl-ink);
}

.seran-rel__title::before {
	content: "";
	position: absolute;
	top: 50%;
	left: 0;
	width: 4px;
	height: 1em;
	border-radius: 2px;
	background: var(--srl-accent);
	transform: translateY(-50%);
}

.seran-rel__subtitle {
	margin: 6px 0 0;
	padding-left: 14px;
	font-size: 16px;
	color: var(--srl-ink-3);
}

/* ============================================================
   1. 열 수 — PHP 는 data-* 만 넘기고, 실제 값은 여기서 결정한다
   (class-seran-related.php: columns_desktop 1~6 / columns_mobile 1~3)
============================================================ */

@media (max-width: 767.98px) {
	.seran-rel[data-cols-mobile="1"] {
		--srl-cols: 1;
	}

	.seran-rel[data-cols-mobile="2"] {
		--srl-cols: 2;
	}

	.seran-rel[data-cols-mobile="3"] {
		--srl-cols: 3;
	}
}

@media (min-width: 768px) {
	.seran-rel[data-cols-desktop="1"] {
		--srl-cols: 1;
	}

	.seran-rel[data-cols-desktop="2"] {
		--srl-cols: 2;
	}

	.seran-rel[data-cols-desktop="3"] {
		--srl-cols: 3;
	}

	.seran-rel[data-cols-desktop="4"] {
		--srl-cols: 4;
	}

	.seran-rel[data-cols-desktop="5"] {
		--srl-cols: 5;
	}

	.seran-rel[data-cols-desktop="6"] {
		--srl-cols: 6;
	}
}

/* 태블릿 구간에서는 4열 이상을 3열로 접는다(카드 최소 가독폭 확보) */
@media (min-width: 768px) and (max-width: 1023.98px) {
	.seran-rel[data-cols-desktop="4"],
	.seran-rel[data-cols-desktop="5"],
	.seran-rel[data-cols-desktop="6"] {
		--srl-cols: 3;
	}
}

@media (max-width: 991.98px) {
	.seran-rel {
		--srl-gap: 14px;
	}
}

/* ============================================================
   2. 태그 칩 필터
============================================================ */

.seran-rel__chips {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	align-items: center;
	margin: 0 0 14px;
}

.seran-rel__chip {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	height: 34px;
	padding: 0 14px;
	border: 1px solid var(--srl-accent);
	border-radius: 9999px;
	background: transparent;
	color: var(--srl-accent);
	font-size: 14px;
	font-weight: 700;
	line-height: 1;
	text-decoration: none;
	white-space: nowrap;
	transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.seran-rel__chip:hover,
.seran-rel__chip:focus-visible {
	background: var(--srl-accent);
	color: var(--srl-surface);
	transform: translateY(-1px);
}

.seran-rel__chip:focus-visible {
	outline: 2px solid var(--srl-accent-strong);
	outline-offset: 2px;
}

.seran-rel__chip[aria-current="true"] {
	background: var(--srl-accent);
	border-color: transparent;
	color: var(--srl-surface);
}

.seran-rel__chip[aria-disabled="true"] {
	opacity: 0.5;
	pointer-events: none;
}

/* ============================================================
   3. 카드 그리드
============================================================ */

.seran-rel__body {
	position: relative;
	min-height: 60px;
}

.seran-rel__grid {
	display: grid;
	grid-template-columns: repeat(var(--srl-cols), minmax(0, 1fr));
	gap: var(--srl-gap);
	padding: calc(var(--srl-gap) / 2) 0;
}

.seran-rel__card {
	display: flex;
	flex-direction: column;
	overflow: hidden;
	border-radius: var(--srl-radius-lg);
	background: var(--srl-surface);
	box-shadow: var(--srl-shadow);
	transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.seran-rel__card:hover {
	transform: translateY(-2px);
	box-shadow: var(--srl-shadow-lift);
}

.seran-rel__card:focus-within {
	outline: 2px solid var(--srl-accent);
	outline-offset: 2px;
}

/* 썸네일 — 기본 4:3. 1:1 로 되돌리려면 호스트 템플릿에서
   .seran-rel{--srl-thumb-ratio:1 / 1;} 한 줄이면 된다. */
.seran-rel__thumb {
	position: relative;
	display: block;
	width: 100%;
	aspect-ratio: var(--srl-thumb-ratio);
	overflow: hidden;
	background: var(--srl-soft);
}

.seran-rel__thumb img {
	position: absolute;
	inset: 0;
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.35s ease;
}

.seran-rel__card:hover .seran-rel__thumb img,
.seran-rel__card:focus-within .seran-rel__thumb img {
	transform: scale(1.04);
}

.seran-rel__thumb-ph {
	display: block;
	width: 100%;
	height: 100%;
	background: linear-gradient(135deg, var(--srl-soft), var(--srl-warm));
}

.seran-rel__card-body {
	display: flex;
	flex: 1 1 auto;
	flex-direction: column;
	gap: 10px;
	padding: 30px;
}

.seran-rel__card-title {
	display: -webkit-box;
	overflow: hidden;
	margin: 0;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 2;
	line-clamp: 2;
	font-size: 20px;
	font-weight: 700;
	line-height: 1.35;
	color: var(--srl-ink);
	word-break: keep-all;
}

.seran-rel__card-title a {
	color: inherit;
	text-decoration: none;
}

.seran-rel__card-title a:hover,
.seran-rel__card-title a:focus-visible {
	color: var(--srl-accent-strong);
}

.seran-rel__card-excerpt {
	display: -webkit-box;
	overflow: hidden;
	margin: 0;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 3;
	line-clamp: 3;
	font-size: 15px;
	line-height: 1.6;
	color: var(--srl-ink-2);
}

/* 카드 안 태그 칩 (#태그) */
.seran-rel__card-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.seran-rel__card-tag {
	display: inline-flex;
	align-items: center;
	max-width: 100%;
	overflow: hidden;
	padding: 3px 10px;
	border-radius: 9999px;
	background: var(--srl-warm);
	color: var(--srl-accent-strong);
	font-size: 12px;
	font-weight: 500;
	line-height: 1.5;
	white-space: nowrap;
	text-overflow: ellipsis;
}

.seran-rel__card-foot {
	display: flex;
	justify-content: flex-end;
	margin-top: auto;
	padding-top: 6px;
}

.seran-rel__more {
	font-size: 15px;
	font-weight: 700;
	color: var(--srl-ink);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.seran-rel__card:hover .seran-rel__more {
	color: var(--srl-accent);
}

.seran-rel__empty {
	margin: 28px 0;
	padding: 22px;
	border: 1px dashed var(--srl-line);
	border-radius: var(--srl-radius);
	background: var(--srl-soft);
	color: var(--srl-ink-3);
	font-size: 15px;
	text-align: center;
}

/* 오류 알림 (JS 가 fetch 실패 시 삽입) */
.seran-rel__error {
	margin: 0 0 14px;
	padding: 12px 16px;
	border: 1px solid var(--srl-accent-soft);
	border-radius: var(--srl-radius);
	background: var(--srl-warm);
	color: var(--srl-accent-strong);
	font-size: 14px;
	font-weight: 500;
}

/* 로딩 상태 */
.seran-rel__body.is-loading {
	pointer-events: none;
}

.seran-rel__body.is-loading .seran-rel__grid,
.seran-rel__body.is-loading .seran-rel__empty {
	opacity: 0.35;
	transition: opacity 0.18s ease;
}

.seran-rel__body.is-loading::after {
	content: "";
	position: absolute;
	top: 40px;
	left: 50%;
	width: 30px;
	height: 30px;
	margin-left: -15px;
	border: 3px solid var(--srl-warm);
	border-top-color: var(--srl-accent);
	border-radius: 50%;
	animation: seran-rel-spin 0.8s linear infinite;
	z-index: 2;
}

@keyframes seran-rel-spin {
	to {
		transform: rotate(360deg);
	}
}

/* ============================================================
   4. 페이지네이션
============================================================ */

.seran-rel__pagination {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	justify-content: center;
	margin-top: 14px;
}

.seran-rel__page {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 36px;
	height: 36px;
	padding: 0 10px;
	border: 1px solid var(--srl-line);
	border-radius: 10px;
	background: var(--srl-soft);
	color: var(--srl-ink);
	font-size: 14px;
	font-weight: 700;
	text-decoration: none;
	transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.seran-rel__page:hover,
.seran-rel__page:focus-visible {
	border-color: var(--srl-accent);
	color: var(--srl-accent-strong);
	transform: translateY(-1px);
}

.seran-rel__page:focus-visible {
	outline: 2px solid var(--srl-accent);
	outline-offset: 2px;
}

.seran-rel__page.is-current,
.seran-rel__page[aria-current="page"] {
	border-color: transparent;
	background: var(--srl-accent);
	color: var(--srl-surface);
}

.seran-rel__page[aria-disabled="true"] {
	opacity: 0.5;
	pointer-events: none;
}

/* ============================================================
   5. 검사 카드 캐러셀 ([exam_cards])
============================================================ */

.seran-rel--exams {
	padding: 0 16px;
}

.seran-rel__viewport {
	position: relative;
}

.seran-rel__track {
	display: flex;
	gap: var(--srl-gap);
	overflow-x: auto;
	padding: calc(var(--srl-gap) / 2);
	scroll-snap-type: x mandatory;
	scroll-behavior: smooth;
	-webkit-overflow-scrolling: touch;
	scrollbar-width: none;
	overscroll-behavior-x: contain;
}

.seran-rel__track::-webkit-scrollbar {
	display: none;
}

.seran-rel__track:focus-visible {
	outline: 2px solid var(--srl-accent);
	outline-offset: 2px;
}

.seran-rel__track.is-dragging {
	cursor: grabbing;
	scroll-behavior: auto;
	scroll-snap-type: none;
}

.seran-rel__exam {
	flex: 0 0 calc((100% - (var(--srl-cols) - 1) * var(--srl-gap)) / var(--srl-cols));
	min-width: 0;
	border-radius: var(--srl-radius-lg);
	background: var(--srl-surface);
	box-shadow: var(--srl-shadow);
	scroll-snap-align: start;
	transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.seran-rel__exam:hover {
	transform: translateY(-2px);
	box-shadow: var(--srl-shadow-lift);
}

.seran-rel__exam-link {
	display: flex;
	flex-direction: column;
	height: 100%;
	min-height: 280px;
	padding: 28px;
	color: inherit;
	text-decoration: none;
}

.seran-rel__exam-link:focus-visible {
	outline: 2px solid var(--srl-accent);
	outline-offset: 2px;
	border-radius: var(--srl-radius-lg);
}

.seran-rel__exam-icon {
	display: block;
	width: 48px;
	height: 48px;
	margin-bottom: 16px;
}

.seran-rel__exam-icon img {
	display: block;
	width: 48px;
	height: 48px;
	border-radius: 5px;
	object-fit: contain;
}

.seran-rel__exam-icon-ph {
	display: block;
	width: 48px;
	height: 48px;
	border-radius: var(--srl-radius);
	background: var(--srl-warm);
}

.seran-rel__exam-title {
	margin: 0 0 10px;
	font-family: var(--srl-font-display);
	font-size: 24px;
	font-weight: 700;
	line-height: 1.2;
	color: var(--srl-ink);
	word-break: keep-all;
}

.seran-rel__exam-label {
	display: block;
	margin-bottom: 6px;
	font-size: 14px;
	color: var(--srl-ink-3);
}

.seran-rel__exam-desc {
	display: -webkit-box;
	overflow: hidden;
	margin: 0 0 32px;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 5;
	line-clamp: 5;
	font-size: 16px;
	line-height: 1.6;
	color: var(--srl-ink-2);
}

.seran-rel__exam-more {
	display: inline-block;
	margin-top: auto;
	font-weight: 700;
	color: var(--srl-ink);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.seran-rel__exam:hover .seran-rel__exam-more {
	color: var(--srl-accent);
}

/* 캐러셀 네비 — PHP 가 hidden 으로 출력하고, 넘침이 있을 때 JS 가 해제한다 */
.seran-rel__nav {
	position: absolute;
	top: 50%;
	z-index: 4;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: var(--srl-nav-size);
	height: var(--srl-nav-size);
	padding: 0;
	border: 1px solid var(--srl-line);
	border-radius: 9999px;
	background: var(--srl-surface);
	color: var(--srl-ink);
	box-shadow: var(--srl-shadow);
	cursor: pointer;
	transform: translateY(-50%);
	transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, opacity 0.18s ease;
}

.seran-rel__nav[hidden] {
	display: none;
}

.seran-rel__nav:hover {
	border-color: transparent;
	background: var(--srl-accent);
	color: var(--srl-surface);
}

.seran-rel__nav:focus-visible {
	outline: 2px solid var(--srl-accent-strong);
	outline-offset: 2px;
}

.seran-rel__nav[aria-disabled="true"] {
	opacity: 0.35;
	cursor: default;
}

.seran-rel__nav--prev {
	left: -14px;
}

.seran-rel__nav--next {
	right: -14px;
}

.seran-rel__nav-icon {
	display: block;
	width: 18px;
	height: 18px;
	background-color: currentColor;
	-webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='9 18 15 12 9 6'/></svg>") center / contain no-repeat;
	mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='9 18 15 12 9 6'/></svg>") center / contain no-repeat;
}

.seran-rel__nav--prev .seran-rel__nav-icon {
	transform: rotate(180deg);
}

@media (max-width: 767.98px) {
	.seran-rel--exams {
		--srl-nav-size: 40px;

		padding: 0 8px;
	}

	.seran-rel__nav--prev {
		left: -6px;
	}

	.seran-rel__nav--next {
		right: -6px;
	}

	.seran-rel__exam-link {
		min-height: 0;
		padding: 22px;
	}

	.seran-rel__exam-title {
		font-size: 21px;
	}
}

@media (min-width: 1024px) {
	.seran-rel__exam-title {
		font-size: 26px;
	}
}

/* 카드 그리드 소형 화면 치수 (구 .ccs-* @992 규칙 승계) */
@media (max-width: 991.98px) {
	.seran-rel__card-body {
		padding: 16px;
	}

	.seran-rel__card-title {
		font-size: 17px;
	}

	.seran-rel__card-excerpt {
		font-size: 14px;
	}

	.seran-rel__more {
		font-size: 14px;
	}
}

/* ============================================================
   6. FAQ 아코디언
============================================================ */

.seran-faq {
	--srl-faq-radius: var(--srl-radius-lg);

	margin: 44px auto;
	padding: 0;
}

.seran-faq__head {
	margin: 0 0 32px;
	text-align: center;
}

.seran-faq__eyebrow {
	margin: 0 0 10px;
	font-family: var(--srl-font-display);
	font-size: 34px;
	font-style: italic;
	font-weight: 700;
	line-height: 1;
	letter-spacing: -0.03em;
	color: var(--srl-accent);
}

.seran-faq__title {
	position: relative;
	margin: 0;
	padding-bottom: 18px;
	font-size: clamp(20px, 2.6vw, 30px);
	font-weight: 700;
	line-height: 1.3;
	color: var(--srl-ink);
	word-break: keep-all;
}

.seran-faq__title::after {
	content: "";
	position: absolute;
	bottom: 0;
	left: 50%;
	width: 180px;
	max-width: 60%;
	height: 4px;
	border-radius: 3px;
	background: var(--srl-accent);
	transform: translateX(-50%);
}

.seran-faq__items {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.seran-faq__item {
	border: 1px solid var(--srl-line);
	border-radius: var(--srl-faq-radius);
	background: var(--srl-surface);
	box-shadow: var(--srl-shadow);
	transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.seran-faq__item.is-open {
	border-color: var(--srl-accent);
	box-shadow: var(--srl-shadow-lift);
}

/* 질문 버튼 (h3 > button) */
.seran-faq__q-wrap {
	margin: 0;
	font-size: inherit;
	font-weight: inherit;
}

.seran-faq__q {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-start;
	gap: 10px 14px;
	width: 100%;
	margin: 0;
	padding: 22px 68px 22px 24px;
	border: 0;
	border-radius: var(--srl-faq-radius);
	background: transparent;
	color: var(--srl-ink);
	font-family: inherit;
	font-size: 18px;
	font-weight: 700;
	line-height: 1.5;
	text-align: left;
	cursor: pointer;
	position: relative;
	transition: background-color 0.2s ease, color 0.2s ease;
}

.seran-faq__q:hover {
	background: var(--srl-warm);
}

.seran-faq__q:focus-visible {
	outline: 2px solid var(--srl-accent);
	outline-offset: -2px;
}

.seran-faq__item.is-open .seran-faq__q {
	border-radius: var(--srl-faq-radius) var(--srl-faq-radius) 0 0;
	background: var(--srl-warm);
	color: var(--srl-accent-strong);
}

/* Q. / A. 마크 */
.seran-faq__mark {
	flex: 0 0 auto;
	font-family: var(--srl-font-display);
	font-size: 24px;
	font-style: italic;
	font-weight: 700;
	line-height: 1.2;
	color: var(--srl-accent);
}

.seran-faq__mark--a {
	position: absolute;
	top: 24px;
	left: 24px;
	color: var(--srl-olive);
}

.seran-faq__q-text {
	flex: 1 1 auto;
	min-width: 0;
	word-break: keep-all;
}

.seran-faq__tags {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	width: 100%;
	margin: 0;
	order: 3;
	padding-left: 38px;
}

.seran-faq__tag {
	display: inline-flex;
	align-items: center;
	padding: 3px 12px;
	border-radius: 9999px;
	background: var(--srl-accent-soft);
	color: var(--srl-surface);
	font-size: 13px;
	font-weight: 500;
	white-space: nowrap;
}

/* +/− 아이콘 */
.seran-faq__arrow {
	position: absolute;
	top: 22px;
	right: 22px;
	display: block;
	width: 26px;
	height: 26px;
	border-radius: 50%;
	background: var(--srl-warm);
	transition: background-color 0.25s ease, transform 0.25s ease;
}

.seran-faq__arrow::before,
.seran-faq__arrow::after {
	content: "";
	position: absolute;
	top: 50%;
	left: 50%;
	width: 12px;
	height: 2px;
	border-radius: 1px;
	background: var(--srl-accent);
	transform: translate(-50%, -50%);
	transition: transform 0.25s ease, opacity 0.25s ease, background-color 0.25s ease;
}

.seran-faq__arrow::after {
	transform: translate(-50%, -50%) rotate(90deg);
}

.seran-faq__item.is-open .seran-faq__arrow {
	background: var(--srl-accent);
}

.seran-faq__item.is-open .seran-faq__arrow::before,
.seran-faq__item.is-open .seran-faq__arrow::after {
	background: var(--srl-surface);
}

/* 열림 상태: 세로 막대만 접어 "−" 로 */
.seran-faq__item.is-open .seran-faq__arrow::after {
	transform: translate(-50%, -50%) rotate(0deg);
	opacity: 0;
}

/* 답변 패널 — grid-template-rows 0fr→1fr 전환(높이 측정 JS 불필요) */
.seran-faq__a {
	display: grid;
	grid-template-rows: 0fr;
	visibility: hidden;
	transition: grid-template-rows 0.32s ease, visibility 0.32s ease;
}

.seran-faq__item.is-open .seran-faq__a {
	grid-template-rows: 1fr;
	visibility: visible;
}

.seran-faq__a-inner {
	position: relative;
	overflow: hidden;
	min-height: 0;
	padding: 0 24px 0 72px;
}

.seran-faq__item.is-open .seran-faq__a-inner {
	padding-top: 24px;
	padding-bottom: 26px;
	border-top: 1px solid var(--srl-line);
}

.seran-faq__a-text {
	font-size: 16px;
	line-height: 1.9;
	color: var(--srl-ink-2);
	word-break: keep-all;
}

.seran-faq__a-text p {
	margin: 0 0 12px;
}

.seran-faq__a-text p:last-child,
.seran-faq__a-text ul:last-child,
.seran-faq__a-text ol:last-child {
	margin-bottom: 0;
}

.seran-faq__a-text ul,
.seran-faq__a-text ol {
	margin: 0 0 12px;
	padding-left: 20px;
}

.seran-faq__a-text li + li {
	margin-top: 4px;
}

.seran-faq__a-text a {
	color: var(--srl-accent-strong);
	text-underline-offset: 3px;
}

/* 구조 없는 자유 HTML 폴백 ([faq_cpt_list] parse 실패 시) */
.seran-faq__plain {
	padding: 24px;
	border: 1px solid var(--srl-line);
	border-radius: var(--srl-faq-radius);
	background: var(--srl-surface);
	font-size: 16px;
	line-height: 1.9;
	color: var(--srl-ink-2);
}

.seran-faq__plain p {
	margin: 0 0 12px;
}

.seran-faq__plain p:last-child {
	margin-bottom: 0;
}

@media (max-width: 767.98px) {
	.seran-faq {
		margin: 32px auto;
	}

	.seran-faq__head {
		margin-bottom: 24px;
	}

	.seran-faq__eyebrow {
		font-size: 28px;
	}

	.seran-faq__items {
		gap: 12px;
	}

	.seran-faq__q {
		gap: 10px;
		padding: 18px 56px 18px 16px;
		font-size: 16px;
	}

	.seran-faq__mark {
		font-size: 20px;
	}

	.seran-faq__mark--a {
		top: 20px;
		left: 16px;
	}

	.seran-faq__tags {
		padding-left: 30px;
	}

	.seran-faq__arrow {
		top: 18px;
		right: 16px;
		width: 24px;
		height: 24px;
	}

	.seran-faq__a-inner {
		padding: 0 16px 0 52px;
	}

	.seran-faq__item.is-open .seran-faq__a-inner {
		padding-top: 18px;
		padding-bottom: 20px;
	}

	.seran-faq__a-text {
		font-size: 15px;
		line-height: 1.75;
	}
}

/* ============================================================
   7. 접근성 — 모션 축소 / JS 없음
============================================================ */

@media (prefers-reduced-motion: reduce) {
	.seran-rel *,
	.seran-faq * {
		transition-duration: 0.01ms !important;
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
	}

	.seran-rel__track {
		scroll-behavior: auto;
	}
}

/* JS 가 꺼진 환경에서는 아코디언을 모두 펼쳐 콘텐츠 유실을 막는다.
   (.is-ready 같은 클래스 토글이 아니라 미디어 특성이므로 FOUC 가 없다.
    미지원 브라우저는 기존대로 JS 토글로 동작한다.) */
@media (scripting: none) {
	.seran-faq__a {
		grid-template-rows: 1fr;
		visibility: visible;
	}

	.seran-faq__a-inner {
		padding-top: 24px;
		padding-bottom: 26px;
		border-top: 1px solid var(--srl-line);
	}

	.seran-faq__arrow {
		display: none;
	}

	.seran-faq__q {
		cursor: default;
		padding-right: 24px;
	}
}

/* 다음 페이지 버튼 — 마크업에는 있으나 정의가 없었다(커버리지 감사). */
.seran-rel__page--next {
	margin-left: auto;
}