/**
 * 소개(About) 템플릿 — 모노톤 건축 사무소 레이아웃 (assets/css/about.css)
 * templates/template-about.php
 */

.archf-about {
	--ab-ink: #111;
	--ab-text: #3a3a3a;
	--ab-muted: #8a8a8a;
	--ab-line: #dcdcdc;
	--ab-paper: #f4f4f2;
	--ab-white: #fff;
	color: var(--ab-text);
	background: var(--ab-white);
	overflow-x: clip;
}

.archf-about .container {
	position: relative;
}

/* ── 공통 ── */
.archf-about-label {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	margin: 0 0 14px;
	font-size: 12px;
	font-weight: 600;
	letter-spacing: 0.24em;
	text-transform: uppercase;
	color: var(--ab-muted);
}

.archf-about-label::before {
	content: "";
	width: 28px;
	height: 1px;
	background: currentColor;
}

.archf-about-label--light {
	color: rgba(255, 255, 255, 0.6);
}

.archf-about-heading {
	margin: 0;
	font-size: clamp(26px, 2.6vw, 40px);
	font-weight: 700;
	line-height: 1.3;
	letter-spacing: -0.03em;
	color: var(--ab-ink);
}

/* ── 1. 비주얼 ── */
.archf-about-hero {
	position: relative;
	padding: clamp(60px, 8vw, 130px) 0 clamp(40px, 5vw, 80px);
	background: var(--ab-white);
}

.archf-about-hero__inner {
	display: grid;
	grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
	align-items: center;
	gap: clamp(24px, 3vw, 48px);
}

.archf-about-hero__text {
	position: relative;
	z-index: 2;
}

.archf-about-hero__title {
	margin: 0;
	font-size: clamp(34px, 4.2vw, 68px);
	font-weight: 300;
	line-height: 1.22;
	letter-spacing: -0.04em;
	color: var(--ab-ink);
	word-break: keep-all;
}

.archf-about-hero__title strong {
	font-weight: 800;
}

.archf-about-hero__sub {
	margin: clamp(18px, 2vw, 30px) 0 0;
	padding-top: clamp(16px, 1.6vw, 24px);
	border-top: 1px solid var(--ab-line);
	max-width: 360px;
	font-size: 15px;
	letter-spacing: -0.02em;
	color: var(--ab-muted);
}

.archf-about-hero__visual {
	position: relative;
	margin: 0 calc(-1 * clamp(0px, 4vw, 80px)) 0 0;
}

.archf-about-hero__visual img {
	display: block;
	width: 100%;
	height: auto;
	mix-blend-mode: multiply;
}

/* 이미지 가장자리를 흰 바탕으로 녹인다 */
.archf-about-hero__visual::after {
	content: "";
	position: absolute;
	inset: 0;
	pointer-events: none;
	background:
		linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, 0) 14%),
		linear-gradient(0deg, #fff 0%, rgba(255, 255, 255, 0) 16%);
}

.archf-about-hero__watermark {
	position: absolute;
	left: 50%;
	bottom: clamp(-10px, -1vw, 0px);
	z-index: 0;
	transform: translateX(-50%);
	font-size: clamp(64px, 14vw, 260px);
	font-weight: 900;
	line-height: 0.8;
	letter-spacing: -0.04em;
	white-space: nowrap;
	color: transparent;
	-webkit-text-stroke: 1px rgba(0, 0, 0, 0.07);
	pointer-events: none;
	user-select: none;
}

/* ── 2. 인사말 ── */
.archf-about-greeting {
	padding: clamp(70px, 9vw, 150px) 0;
	background: var(--ab-paper);
}

.archf-about-greeting__grid {
	display: grid;
	grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
	gap: clamp(32px, 5vw, 96px);
}

.archf-about-greeting__head {
	position: sticky;
	top: calc(var(--header-height, 90px) + 30px);
	align-self: start;
}

.archf-about-greeting__line {
	display: block;
	width: 1px;
	height: clamp(60px, 8vw, 140px);
	margin-top: clamp(24px, 3vw, 40px);
	background: var(--ab-ink);
}

.archf-about-greeting__lead {
	margin: 0 0 clamp(28px, 3vw, 48px);
	font-size: clamp(22px, 2.2vw, 36px);
	font-weight: 300;
	line-height: 1.5;
	letter-spacing: -0.04em;
	color: var(--ab-ink);
	word-break: keep-all;
}

.archf-about-greeting__text {
	max-width: 760px;
	font-size: clamp(15px, 1.05vw, 17px);
	line-height: 1.95;
	letter-spacing: -0.02em;
	color: var(--ab-text);
	word-break: keep-all;
}

.archf-about-greeting__text p {
	margin: 0 0 1.3em;
}

.archf-about-greeting__text p:last-child {
	margin-bottom: 0;
}

.archf-about-greeting__sign {
	display: flex;
	align-items: baseline;
	gap: 16px;
	margin: clamp(32px, 3.6vw, 56px) 0 0;
	padding-top: 24px;
	border-top: 1px solid var(--ab-line);
	max-width: 760px;
	font-size: 14px;
	color: var(--ab-muted);
}

.archf-about-greeting__sign strong {
	font-size: 15px;
	font-weight: 700;
	letter-spacing: 0.18em;
	color: var(--ab-ink);
}

/* ── 3. 시공 원칙 ── */
.archf-about-principle {
	position: relative;
	padding: clamp(80px, 10vw, 160px) 0;
	background: #121212;
	color: #fff;
	isolation: isolate;
	overflow: hidden;
}

.archf-about-principle__bg {
	position: absolute;
	inset: 0;
	z-index: -1;
	background-position: center 60%;
	background-size: cover;
	filter: invert(1) grayscale(1);
	opacity: 0.16;
}

.archf-about-principle .archf-about-heading {
	color: #fff;
	word-break: keep-all;
}

.archf-about-principle__head {
	margin-bottom: clamp(40px, 5vw, 80px);
}

.archf-about-principle__list {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	margin: 0;
	padding: 0;
	list-style: none;
	border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.archf-about-principle__item {
	padding: clamp(28px, 3vw, 44px) clamp(18px, 2.4vw, 40px) 0 0;
	border-right: 1px solid rgba(255, 255, 255, 0.12);
	transition: background-color 0.4s ease;
}

.archf-about-principle__item + .archf-about-principle__item {
	padding-left: clamp(18px, 2.4vw, 40px);
}

.archf-about-principle__item:last-child {
	border-right: 0;
}

.archf-about-principle__num {
	display: block;
	font-size: clamp(40px, 4vw, 64px);
	font-weight: 200;
	line-height: 1;
	letter-spacing: -0.04em;
	color: rgba(255, 255, 255, 0.9);
}

.archf-about-principle__en {
	display: block;
	margin-top: 18px;
	font-size: 11px;
	letter-spacing: 0.22em;
	text-transform: uppercase;
	color: rgba(255, 255, 255, 0.45);
}

.archf-about-principle__title {
	margin: 10px 0 12px;
	font-size: clamp(18px, 1.5vw, 23px);
	font-weight: 700;
	letter-spacing: -0.03em;
	color: #fff;
}

.archf-about-principle__desc {
	margin: 0;
	font-size: 15px;
	line-height: 1.75;
	letter-spacing: -0.02em;
	color: rgba(255, 255, 255, 0.68);
	word-break: keep-all;
}

/* ── 인사말 위 회사 소개 ── */
.archf-about-greeting__intro {
	max-width: 760px;
	margin: 0 0 clamp(24px, 2.6vw, 36px);
	padding-bottom: clamp(24px, 2.6vw, 36px);
	border-bottom: 1px solid var(--ab-line);
	font-size: clamp(16px, 1.2vw, 19px);
	font-weight: 500;
	line-height: 1.85;
	letter-spacing: -0.03em;
	color: var(--ab-ink);
	word-break: keep-all;
}

/* ── 4. 회사 연혁 ── */
.archf-about-history {
	padding: clamp(80px, 10vw, 160px) 0;
	background: var(--ab-white);
}

.archf-about-history__grid {
	display: grid;
	grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
	gap: clamp(32px, 5vw, 96px);
}

.archf-about-history__head {
	position: sticky;
	top: calc(var(--header-height, 90px) + 30px);
	align-self: start;
}

.archf-about-history__visual {
	margin: clamp(32px, 4vw, 60px) 0 0;
}

.archf-about-history__visual img {
	display: block;
	width: 100%;
	height: auto;
	mix-blend-mode: multiply;
	opacity: 0.85;
}

.archf-about-timeline {
	position: relative;
	margin: 0;
	padding: 0;
	list-style: none;
}

/* 세로선 */
.archf-about-timeline::before {
	content: "";
	position: absolute;
	top: 14px;
	bottom: 14px;
	left: 7px;
	width: 1px;
	background: var(--ab-line);
}

.archf-about-timeline__item {
	position: relative;
	padding: 0 0 clamp(34px, 3.4vw, 50px) clamp(44px, 4vw, 64px);
}

.archf-about-timeline__item:last-child {
	padding-bottom: 0;
}

.archf-about-timeline__dot {
	position: absolute;
	top: 9px;
	left: 0;
	width: 15px;
	height: 15px;
	border-radius: 50%;
	background: #c4c4c4;
	box-shadow: 0 0 0 5px var(--ab-white);
}

.archf-about-timeline__year {
	display: block;
	margin-bottom: 12px;
	font-family: Georgia, "Times New Roman", serif;
	font-size: clamp(26px, 2.2vw, 34px);
	font-weight: 400;
	line-height: 1.1;
	letter-spacing: -0.02em;
	color: #6f6f6f;
}

.archf-about-timeline__events {
	margin: 0;
	padding: 0;
	list-style: none;
}

.archf-about-timeline__events li {
	position: relative;
	padding-left: 14px;
	font-size: clamp(15px, 1.1vw, 17px);
	line-height: 1.9;
	letter-spacing: -0.03em;
	color: var(--ab-text);
	word-break: keep-all;
}

.archf-about-timeline__events li::before {
	content: "-";
	position: absolute;
	left: 0;
}

.archf-about-timeline__events strong {
	font-weight: 700;
	color: var(--ab-ink);
}

/* 현재 */
.archf-about-timeline__item.is-now .archf-about-timeline__dot {
	background: var(--ab-ink);
}

.archf-about-timeline__item.is-now .archf-about-timeline__year {
	font-family: inherit;
	font-weight: 800;
	color: var(--ab-ink);
}

/* ── 반응형 ── */
@media (max-width: 1024px) {
	.archf-about-hero__inner,
	.archf-about-greeting__grid {
		grid-template-columns: minmax(0, 1fr);
	}
	.archf-about-hero__visual {
		margin: 0;
	}
	.archf-about-greeting__head {
		position: static;
	}
	.archf-about-greeting__line {
		display: none;
	}
	.archf-about-history__grid {
		grid-template-columns: minmax(0, 1fr);
	}
	.archf-about-history__head {
		position: static;
	}
	.archf-about-history__visual {
		display: none;
	}
}

@media (max-width: 767px) {
	.archf-about-principle__list {
		grid-template-columns: minmax(0, 1fr);
	}
	.archf-about-principle__item,
	.archf-about-principle__item + .archf-about-principle__item {
		padding: 28px 0;
		border-right: 0;
		border-bottom: 1px solid rgba(255, 255, 255, 0.12);
	}
	.archf-about-greeting__sign {
		flex-direction: column;
		gap: 4px;
	}
}