@charset "utf-8";

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500&family=Noto+Sans+JP:wght@400;500&family=Shippori+Mincho:wght@500;600&display=swap");

:root {
	--page-bg: #27292e;
	--page-bg-dark: #18191c;
	--text: #d0d2db;
	--text-strong: #f7f7f5;
	--accent: #c9bfa9;
	--line: rgba(208, 210, 219, 0.35);
}

* {
	box-sizing: border-box;
}

html {
	width: 100%;
	height: 100%;
	scroll-behavior: smooth;
}

body {
	width: 100%;
	min-height: 100%;
	margin: 0;
	padding: 0;
	color: var(--text);
	font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
	font-size: 15px;
	line-height: 2.2;
	letter-spacing: 0.03em;
	background: var(--page-bg);
	-webkit-text-size-adjust: 100%;
}

h1,
h2,
h3,
p,
ul,
ol,
li,
dl,
dt,
dd,
figure {
	margin: 0;
	padding: 0;
	font-size: 100%;
}

ul {
	list-style: none;
}

ol {
	padding-left: 2em;
}

img {
	max-width: 100%;
	height: auto;
	vertical-align: middle;
}

a {
	color: var(--text);
	transition: color 0.35s, opacity 0.35s;
}

a:hover {
	color: var(--accent);
	text-decoration: none;
}

/* 元テンプレートの全画面ヘッダー */
header {
	position: relative;
	width: 100%;
	height: 110vh;
	min-height: 900px;
	overflow: hidden;
	background:
		linear-gradient(rgba(10, 11, 13, 0.63), rgba(10, 11, 13, 0.77)),
		url("../images/web/hero.jpg") center center / cover no-repeat;
}

header::after {
	content: "";
	position: absolute;
	inset: 0;
	z-index: 0;
	background: radial-gradient(circle at center, transparent 10%, rgba(0, 0, 0, 0.35) 75%, rgba(0, 0, 0, 0.72) 100%);
	pointer-events: none;
}

header h1 {
	position: absolute;
	top: 0;
	z-index: 20;
	width: 100%;
	padding: 5px 15px;
	color: var(--text);
	font-family: "Inter", sans-serif;
	font-size: 11px;
	font-weight: 400;
	letter-spacing: 0.24em;
	text-align: center;
	background: rgba(0, 0, 0, 0.74);
}

.site-title {
	position: absolute;
	top: 50%;
	left: 50%;
	z-index: 1;
	width: min(660px, 78vw);
	color: #fff;
	text-align: center;
	transform: translate(-50%, -50%);
	text-shadow:
		0 2px 5px rgba(0, 0, 0, 1),
		0 4px 24px rgba(0, 0, 0, 1);
	pointer-events: none;
}

.site-title .en {
	display: block;
	font-family: "Shippori Mincho", serif;
	font-size: clamp(30px, 4.5vw, 64px);
	font-weight: 600;
	line-height: 1.2;
	letter-spacing: 0.12em;
}

.site-title .jp {
	display: block;
	margin-top: 6px;
	font-family: "Shippori Mincho", serif;
	font-size: clamp(17px, 2vw, 26px);
	letter-spacing: 0.35em;
}

.site-title .tagline {
	display: block;
	max-width: 38em;
	margin: 22px auto 0;
	padding: 8px 18px;
	font-size: clamp(11px, 1.15vw, 14px);
	line-height: 1.8;
	letter-spacing: 0.1em;
	background: rgba(0, 0, 0, 0.56);
}

.site-title .price {
	display: inline-block;
	margin-top: 12px;
	padding: 4px 16px;
	font-family: "Inter", sans-serif;
	font-size: 13px;
	letter-spacing: 0.12em;
	background: rgba(0, 0, 0, 0.56);
}

.scroll-cue {
	position: absolute;
	bottom: 24px;
	left: 50%;
	z-index: 12;
	color: #fff;
	font-family: "Inter", sans-serif;
	font-size: 10px;
	letter-spacing: 0.26em;
	text-decoration: none;
	transform: translateX(-50%);
}

.scroll-cue::after {
	content: "";
	display: block;
	width: 1px;
	height: 42px;
	margin: 8px auto 0;
	background: rgba(255, 255, 255, 0.75);
}

/* 元テンプレートの本文レイアウト */
.contents {
	overflow: hidden;
}

.inner {
	overflow: hidden;
	width: 100%;
	max-width: 1400px;
	margin: 0 auto;
	padding: 74px 10%;
}

.contents.bg1 {
	background: var(--page-bg-dark);
}

.contents.bg2 {
	position: relative;
	color: #fff;
	background:
		linear-gradient(rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.8)),
		url("../images/web/desk-books.jpg") center center / cover no-repeat;
}

.contents.bg2 a {
	color: #fff;
}

.contents h2 {
	clear: both;
	margin-bottom: 40px;
	color: var(--text-strong);
	font-family: "Shippori Mincho", serif;
	font-size: clamp(30px, 4vw, 44px);
	font-weight: 500;
	line-height: 1.45;
	letter-spacing: 0.2em;
	text-align: center;
}

.contents h2 span {
	display: block;
	margin-top: 4px;
	font-family: "Inter", sans-serif;
	font-size: 11px;
	font-weight: 400;
	letter-spacing: 0.28em;
	text-transform: uppercase;
}

.contents h3 {
	clear: both;
	margin: 0 0 20px;
	padding: 0 10px 12px;
	color: var(--text-strong);
	font-size: 20px;
	font-weight: 500;
	background: linear-gradient(90deg, var(--line), transparent) left bottom / 100% 1px no-repeat;
}

.contents p {
	max-width: 74em;
	padding: 0 10px 30px;
}

.contents p + p {
	margin-top: -10px;
}

.contents section + section {
	margin-top: 60px;
}

.lead {
	max-width: 54em !important;
	margin: 0 auto;
	font-family: "Shippori Mincho", serif;
	font-size: clamp(17px, 2vw, 23px);
	line-height: 2;
	text-align: center;
}

.small-note {
	color: #aeb1ba;
	font-size: 13px;
}

.feature-grid,
.step-grid,
.material-grid,
.photo-pair {
	display: grid;
	gap: 34px;
}

.feature-grid,
.step-grid,
.material-grid {
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature,
.step,
.material {
	padding: 26px 24px;
	border: 1px solid var(--line);
	background: rgba(255, 255, 255, 0.025);
}

.feature .num,
.step .num,
.material .num {
	display: block;
	margin-bottom: 12px;
	color: var(--accent);
	font-family: "Inter", sans-serif;
	font-size: 11px;
	letter-spacing: 0.22em;
}

.feature strong,
.step strong,
.material strong {
	display: block;
	margin-bottom: 10px;
	color: var(--text-strong);
	font-size: 16px;
	font-weight: 500;
}

.feature p,
.step p,
.material p {
	padding: 0;
	font-size: 14px;
	line-height: 1.9;
}

.formula {
	max-width: 620px;
	margin: 0 auto 34px;
	padding: 22px 26px;
	color: #fff;
	font-family: "Inter", monospace;
	font-size: clamp(18px, 2.4vw, 26px);
	letter-spacing: 0.08em;
	text-align: center;
	border: 1px solid var(--line);
}

.formula small {
	display: block;
	margin-top: 8px;
	color: #aeb1ba;
	font-size: 10px;
	letter-spacing: 0.18em;
}

/* 元テンプレートの3列ギャラリー */
.gallery-grid {
	overflow: hidden;
}

.list {
	position: relative;
	float: left;
	width: 33.333%;
	overflow: hidden;
	background: #000;
}

.list img {
	width: 100%;
	aspect-ratio: 1 / 1;
	object-fit: cover;
	opacity: 0.55;
	transition: opacity 0.35s, transform 0.55s;
}

.list:hover img {
	opacity: 1;
	transform: scale(1.025);
}

.list figcaption {
	position: absolute;
	right: 0;
	bottom: 0;
	left: 0;
	padding: 8px 12px;
	color: #fff;
	font-size: 11px;
	letter-spacing: 0.12em;
	text-align: center;
	background: rgba(0, 0, 0, 0.65);
}

.photo-pair {
	grid-template-columns: repeat(2, minmax(0, 1fr));
	margin-top: 10px;
}

.photo-pair img {
	width: 100%;
	border: 1px solid var(--line);
}

.photo-pair figcaption {
	margin-top: 8px;
	color: #aeb1ba;
	font-size: 12px;
}

.spec {
	width: 100%;
	margin: 12px auto 30px;
	border-collapse: collapse;
}

.spec th,
.spec td {
	padding: 12px 15px;
	border: 1px solid var(--line);
	font-size: 14px;
	text-align: left;
	vertical-align: top;
}

.spec th {
	width: 160px;
	color: var(--accent);
	font-weight: 400;
	text-align: center;
	background: rgba(255, 255, 255, 0.04);
}

.buy-box {
	max-width: 650px;
	margin: 0 auto;
	padding: 38px;
	text-align: center;
	border: 1px solid rgba(255, 255, 255, 0.45);
	background: rgba(0, 0, 0, 0.55);
}

.buy-box .price {
	display: block;
	margin-bottom: 4px;
	font-family: "Shippori Mincho", serif;
	font-size: 42px;
}

.buy-box .meta {
	display: block;
	margin-bottom: 26px;
	font-size: 13px;
	letter-spacing: 0.08em;
}

.button {
	display: inline-block;
	min-width: 260px;
	padding: 12px 22px;
	color: #111 !important;
	font-weight: 500;
	letter-spacing: 0.08em;
	text-decoration: none;
	background: #fff;
	border: 1px solid #fff;
}

.button:hover {
	color: #fff !important;
	background: transparent;
}

.button.is-disabled {
	cursor: default;
	opacity: 0.7;
}

.button.is-disabled:hover {
	color: #111 !important;
	background: #fff;
}

.notice-list {
	columns: 2;
	column-gap: 54px;
	padding: 0 10px;
}

.notice-list li {
	position: relative;
	margin-bottom: 12px;
	padding-left: 16px;
	break-inside: avoid;
	font-size: 14px;
}

.notice-list li::before {
	content: "・";
	position: absolute;
	left: 0;
}

footer {
	clear: both;
	padding: 16px 0;
	color: #fff;
	text-align: center;
	background: #222;
}

footer a {
	color: #fff;
	text-decoration: none;
}

footer .pr {
	display: block;
	font-size: 11px;
}

.scroll {
	display: none;
}

.scroll a {
	position: fixed;
	right: 24px;
	bottom: 24px;
	z-index: 50;
	display: block;
	width: 50px;
	height: 50px;
	color: #fff;
	line-height: 48px;
	text-align: center;
	text-decoration: none;
	background: rgba(0, 0, 0, 0.55);
	border: 1px solid #fff;
}

.clear {
	clear: both;
}

.center {
	text-align: center;
}

@media screen and (max-width: 800px) {
	header {
		height: 110vh;
		min-height: 760px;
	}

	.inner {
		padding: 54px 5%;
	}

	.feature-grid,
	.step-grid,
	.material-grid {
		grid-template-columns: 1fr;
		gap: 16px;
	}

	.notice-list {
		columns: 1;
	}
}

@media screen and (max-width: 480px) {
	body {
		font-size: 13px;
		line-height: 1.75;
	}

	header {
		height: 110vh;
		min-height: 760px;
	}

	.site-title {
		width: 76vw;
	}

	.site-title .en {
		font-size: 28px;
		letter-spacing: 0.08em;
	}

	.site-title .jp {
		font-size: 16px;
	}

	.site-title .tagline {
		font-size: 10px;
	}

	.inner {
		padding: 38px 4%;
	}

	.contents h2 {
		margin-bottom: 26px;
		font-size: 26px;
		letter-spacing: 0.1em;
	}

	.contents h3 {
		font-size: 17px;
	}

	.list {
		width: 50%;
	}

	.photo-pair {
		grid-template-columns: 1fr;
	}

	.spec th {
		width: 100px;
	}

	.buy-box {
		padding: 28px 20px;
	}

	.button {
		min-width: 0;
		width: 100%;
	}
}