@charset "UTF-8";

/* ==========================================================================
   ARTIKS Components
   全ページはこのコンポーネントの組み合わせだけで構築する。
   レイアウト固有の指定は front-page.css / subpage.css 側に置くこと。
   ========================================================================== */

/* --------------------------------------------------------------------------
   Shell / Grid
   -------------------------------------------------------------------------- */

.a-shell {
	width: 100%;
	max-width: var(--shell);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.a-shell--narrow {
	max-width: var(--shell-narrow);
}

.a-section {
	padding-block: var(--space-section);
}

.a-section--tight {
	padding-block: calc(var(--space-section) * 0.6);
}

.a-grid {
	display: grid;
	gap: var(--gap);
	grid-template-columns: 1fr;
}

@media (min-width: 600px) {
	.a-grid--2,
	.a-grid--3,
	.a-grid--4 {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (min-width: 900px) {
	.a-grid--3 {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}

	.a-grid--4 {
		grid-template-columns: repeat(4, minmax(0, 1fr));
	}
}

/* --------------------------------------------------------------------------
   Glass surface
   Glass-1 = ヘッダー / 主要 CTA。Glass-2 = カード類。それ以外は Flat。
   -------------------------------------------------------------------------- */

.a-glass {
	border: 1px solid var(--glass-1-border);
	border-radius: var(--r-lg);
	background: var(--glass-1-bg);
	box-shadow: var(--glass-1-shadow);
	-webkit-backdrop-filter: blur(var(--glass-1-blur));
	backdrop-filter: blur(var(--glass-1-blur));
}

.a-glass--2 {
	border-color: var(--glass-2-border);
	background: var(--glass-2-bg);
	box-shadow: var(--glass-2-shadow);
	-webkit-backdrop-filter: blur(var(--glass-2-blur));
	backdrop-filter: blur(var(--glass-2-blur));
}

.a-flat {
	border: 1px solid var(--c-hairline);
	border-radius: var(--r-lg);
	background: var(--c-surface);
}

/* --------------------------------------------------------------------------
   Eyebrow / Section head
   -------------------------------------------------------------------------- */

.a-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 0.7em;
	margin: 0;
	color: var(--c-primary);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	font-weight: 600;
	letter-spacing: var(--ls-eyebrow);
	text-transform: uppercase;
	line-height: 1;
}

.a-eyebrow::before {
	content: '';
	width: 1.75rem;
	height: 1px;
	background: currentColor;
	opacity: 0.7;
}

.a-eyebrow--plain::before {
	display: none;
}

.a-section-head {
	display: flex;
	flex-direction: column;
	gap: 0.9rem;
	max-width: 44rem;
	margin-bottom: calc(var(--gap) * 1.6);
}

.a-section-head h2 {
	font-size: var(--fs-h2);
}

.a-section-head p {
	color: var(--c-muted);
	font-size: var(--fs-lead);
	line-height: var(--lh-normal);
}

.a-section-head--center {
	align-items: center;
	max-width: 48rem;
	margin-inline: auto;
	text-align: center;
}

/* --------------------------------------------------------------------------
   Button
   タップターゲットは最小 44px を保証する。
   -------------------------------------------------------------------------- */

.a-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.6em;
	min-height: 52px;
	padding: 0 1.9rem;
	border: 1px solid transparent;
	border-radius: var(--r-pill);
	font-size: var(--fs-sm);
	font-weight: 700;
	letter-spacing: 0.04em;
	text-align: center;
	white-space: nowrap;
	transition:
		transform var(--dur-fast) var(--ease),
		background-color var(--dur-fast) var(--ease),
		border-color var(--dur-fast) var(--ease),
		box-shadow var(--dur-fast) var(--ease),
		filter var(--dur-fast) var(--ease);
}

.a-btn:active {
	transform: translateY(1px);
}

.a-btn--primary {
	background: linear-gradient(135deg, var(--c-primary-bright), var(--c-primary));
	color: #17120c;
	box-shadow: 0 12px 28px rgba(212, 175, 53, 0.22);
}

.a-btn--primary:hover {
	filter: brightness(1.08);
	box-shadow: 0 16px 34px rgba(212, 175, 53, 0.3);
}

/* 主要 CTA のみガラス表現(Glass-1)を許可する */
.a-btn--glass {
	border-color: var(--glass-1-border);
	background: var(--glass-1-bg);
	box-shadow: var(--glass-1-shadow);
	-webkit-backdrop-filter: blur(var(--glass-1-blur));
	backdrop-filter: blur(var(--glass-1-blur));
	color: var(--c-text-strong);
}

.a-btn--glass:hover {
	border-color: var(--c-border);
	box-shadow: var(--glass-1-shadow), 0 0 0 1px rgba(212, 175, 53, 0.14);
}

.a-btn--ghost {
	border-color: var(--c-border);
	background: transparent;
	color: var(--c-text-strong);
}

.a-btn--ghost:hover {
	border-color: var(--c-primary);
	background: var(--c-primary-soft);
}

.a-btn--sm {
	min-height: 44px;
	padding: 0 1.35rem;
	font-size: var(--fs-xs);
}

.a-btn--block {
	width: 100%;
}

/* テキストリンク型 */
.a-link {
	display: inline-flex;
	align-items: center;
	gap: 0.55em;
	min-height: 44px;
	color: var(--c-primary-bright);
	font-size: var(--fs-sm);
	font-weight: 600;
	letter-spacing: 0.04em;
}

.a-link::after {
	content: '';
	width: 1.4em;
	height: 1px;
	background: currentColor;
	transition: width var(--dur-fast) var(--ease);
}

.a-link:hover::after {
	width: 2.2em;
}

/* --------------------------------------------------------------------------
   Site header
   -------------------------------------------------------------------------- */

.a-header {
	position: fixed;
	inset-block-start: 0;
	inset-inline: 0;
	z-index: var(--z-header);
	padding-block: 12px;
	padding-inline: 0;
	padding-top: max(12px, env(safe-area-inset-top));
	transition: padding-block var(--dur) var(--ease);
}

.a-header__inner {
	width: 100%;
	max-width: var(--shell);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.a-header__bar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--gap-sm);
	min-height: 56px;
	padding: 8px 10px 8px 16px;
	border-radius: var(--r-pill);
	transition:
		background-color var(--dur) var(--ease),
		border-color var(--dur) var(--ease),
		box-shadow var(--dur) var(--ease),
		min-height var(--dur) var(--ease);
}

.a-header.is-scrolled .a-header__bar {
	border-color: rgba(255, 255, 255, 0.2);
	box-shadow: var(--glass-1-shadow), 0 0 0 1px rgba(0, 0, 0, 0.24);
}

/* ロゴ */
.a-header__logo {
	flex: 0 0 auto;
	margin: 0;
	font-size: 1rem;
	line-height: 1;
}

.a-header__logo a {
	display: inline-flex;
	align-items: center;
	min-height: 44px;
	color: var(--c-text-strong);
	font-family: var(--ff-display);
	font-size: clamp(1.35rem, 1.1rem + 1vw, 1.75rem);
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

.a-header__logo a:hover {
	color: var(--c-primary-bright);
}

.a-header__logo img {
	max-height: 34px;
	width: auto;
}

/* --------------------------------------------------------------------------
   ロゴのグロー
   ロゴ PNG はパレットの全色が rgb(0,0,0)(透明度だけが異なる)完全な黒一色のため、
   そのままではダーク背景に沈んで見えない。白へ反転させたうえで、
   白いグローをゆっくり明滅させて浮かび上がらせる。
   -------------------------------------------------------------------------- */

.a-header__logo img,
.a-footer__logo img {
	/* brightness(0) で一度真っ黒に潰してから invert(1) で純白にする。
	   元画像の色が変わっても確実に白へ揃うため、この 2 段が安全。 */
	filter:
		brightness(0) invert(1)
		drop-shadow(0 0 6px rgba(255, 255, 255, 0.3))
		drop-shadow(0 0 18px rgba(212, 175, 53, 0.12));
	animation: artiks-logo-glow 3.6s ease-in-out infinite alternate;
	transition: transform var(--dur) var(--ease);
	will-change: filter;
}

@keyframes artiks-logo-glow {
	from {
		filter:
			brightness(0) invert(1)
			drop-shadow(0 0 4px rgba(255, 255, 255, 0.22))
			drop-shadow(0 0 12px rgba(212, 175, 53, 0.08));
	}

	to {
		filter:
			brightness(0) invert(1)
			drop-shadow(0 0 11px rgba(255, 255, 255, 0.55))
			drop-shadow(0 0 24px rgba(212, 175, 53, 0.22));
	}
}

/* ホバーは filter を触らない(アニメーション側の指定が常に優先されるため)。
   代わりにわずかな拡大で反応を返す。 */
.a-header__logo a:hover img,
.a-footer__logo a:hover img {
	transform: scale(1.04);
}

@media (prefers-reduced-motion: reduce) {
	.a-header__logo img,
	.a-footer__logo img {
		animation: none;
		filter:
			brightness(0) invert(1)
			drop-shadow(0 0 9px rgba(255, 255, 255, 0.45))
			drop-shadow(0 0 20px rgba(212, 175, 53, 0.18));
	}
}

.a-header__tagline {
	display: none;
	margin: 0;
	color: var(--c-muted);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	letter-spacing: 0.12em;
}

@media (min-width: 1100px) {
	.a-header__tagline {
		display: block;
		padding-inline-start: 1rem;
		margin-inline-start: 1rem;
		border-inline-start: 1px solid var(--c-hairline);
	}
}

.a-header__brand {
	display: flex;
	align-items: center;
	min-width: 0;
}

/* デスクトップナビ */
.a-header__nav {
	display: none;
	min-width: 0;
}

.a-header__nav ul {
	display: flex;
	align-items: center;
	gap: 0.25rem;
}

.a-header__nav li {
	position: relative;
}

.a-header__nav a {
	display: inline-flex;
	align-items: center;
	min-height: 44px;
	padding-inline: 0.85rem;
	border-radius: var(--r-pill);
	color: var(--c-muted-strong);
	font-size: var(--fs-sm);
	font-weight: 500;
	white-space: nowrap;
}

.a-header__nav a:hover,
.a-header__nav .current-menu-item > a,
.a-header__nav .current-menu-ancestor > a {
	background: rgba(255, 255, 255, 0.07);
	color: var(--c-text-strong);
}

/* サブメニュー */
.a-header__nav .sub-menu {
	position: absolute;
	inset-block-start: calc(100% + 10px);
	inset-inline-start: 50%;
	z-index: 1;
	display: block;
	flex-direction: column;
	min-width: 12rem;
	padding: 8px;
	border: 1px solid var(--glass-2-border);
	border-radius: var(--r-md);
	background: var(--glass-1-bg-solid);
	box-shadow: var(--glass-1-shadow);
	opacity: 0;
	visibility: hidden;
	transform: translate(-50%, -6px);
	transition:
		opacity var(--dur-fast) var(--ease),
		transform var(--dur-fast) var(--ease),
		visibility var(--dur-fast) var(--ease);
}

.a-header__nav li:hover > .sub-menu,
.a-header__nav li:focus-within > .sub-menu {
	opacity: 1;
	visibility: visible;
	transform: translate(-50%, 0);
}

.a-header__nav .sub-menu li {
	width: 100%;
}

.a-header__nav .sub-menu a {
	width: 100%;
	border-radius: var(--r-sm);
}

.a-header__actions {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	flex: 0 0 auto;
}

.a-header__cta {
	display: none;
}

@media (min-width: 900px) {
	.a-header__nav {
		display: block;
	}

	.a-header__cta {
		display: inline-flex;
	}
}

/* ハンバーガー */
.a-burger {
	display: inline-flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 5px;
	width: 44px;
	height: 44px;
	border-radius: var(--r-pill);
	background: rgba(255, 255, 255, 0.06);
	transition: background-color var(--dur-fast) var(--ease);
}

.a-burger:hover {
	background: rgba(255, 255, 255, 0.12);
}

.a-burger span {
	display: block;
	width: 18px;
	height: 1.5px;
	border-radius: 2px;
	background: var(--c-text-strong);
	transition: transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}

.a-burger[aria-expanded='true'] span:nth-child(1) {
	transform: translateY(6.5px) rotate(45deg);
}

.a-burger[aria-expanded='true'] span:nth-child(2) {
	opacity: 0;
}

.a-burger[aria-expanded='true'] span:nth-child(3) {
	transform: translateY(-6.5px) rotate(-45deg);
}

@media (min-width: 900px) {
	.a-burger {
		display: none;
	}
}

/* --------------------------------------------------------------------------
   Drawer (モバイルナビ)
   -------------------------------------------------------------------------- */

.a-drawer {
	position: fixed;
	inset: 0;
	z-index: var(--z-drawer);
	display: flex;
	flex-direction: column;
	padding-block: calc(var(--header-h) + 1rem) 2rem;
	padding-block-end: max(2rem, env(safe-area-inset-bottom));
	overflow-y: auto;
	overscroll-behavior: contain;
	background:
		linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01)),
		linear-gradient(180deg, rgba(12, 10, 7, 0.96), rgba(12, 10, 7, 0.99));
	-webkit-backdrop-filter: blur(24px);
	backdrop-filter: blur(24px);
	opacity: 0;
	visibility: hidden;
	transform: translateY(-1.25rem);
	transition:
		opacity var(--dur) var(--ease),
		transform var(--dur) var(--ease),
		visibility var(--dur) var(--ease);
}

.a-drawer.is-open {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.a-drawer__inner {
	display: flex;
	flex-direction: column;
	gap: 2.25rem;
	width: 100%;
	max-width: var(--shell);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.a-drawer__section {
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
}

.a-drawer__section + .a-drawer__section {
	padding-top: 2rem;
	border-top: 1px solid var(--c-hairline);
}

.a-drawer__nav ul {
	display: flex;
	flex-direction: column;
}

.a-drawer__nav > ul > li > a {
	font-size: 1.25rem;
	font-weight: 600;
}

.a-drawer__nav a {
	display: flex;
	align-items: center;
	min-height: 52px;
	color: var(--c-text-strong);
	font-size: 1rem;
}

.a-drawer__nav a:hover,
.a-drawer__nav .current-menu-item > a {
	color: var(--c-primary-bright);
}

.a-drawer__nav .sub-menu {
	padding-inline-start: 1rem;
	border-inline-start: 1px solid var(--c-hairline);
}

.a-drawer__nav .sub-menu a {
	min-height: 44px;
	color: var(--c-muted);
	font-size: var(--fs-sm);
	font-weight: 400;
}

.a-drawer__meta {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem;
	color: var(--c-muted);
	font-size: var(--fs-sm);
}

body.is-drawer-open {
	overflow: hidden;
}

@media (min-width: 900px) {
	.a-drawer {
		display: none;
	}
}

/* --------------------------------------------------------------------------
   Page header (下層ページ共通)
   -------------------------------------------------------------------------- */

.a-page-header {
	padding-block: calc(var(--header-h) + clamp(2rem, 5vw, 4rem)) clamp(2rem, 5vw, 3.5rem);
}

.a-page-header__inner {
	display: flex;
	flex-direction: column;
	gap: 1rem;
	max-width: 52rem;
}

.a-page-header__breadcrumb {
	margin-bottom: 0.5rem;
}

.a-page-header h1 {
	font-size: var(--fs-h1);
}

.a-page-header__lead {
	color: var(--c-muted);
	font-size: var(--fs-lead);
	line-height: var(--lh-normal);
}

.a-page-header__meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.6rem 1.1rem;
	color: var(--c-muted);
	font-size: var(--fs-sm);
}

.a-page-header__meta .a-tag {
	display: inline-flex;
	align-items: center;
	padding: 0.3em 0.9em;
	border: 1px solid var(--c-border);
	border-radius: var(--r-pill);
	color: var(--c-primary-bright);
	font-size: var(--fs-xs);
	font-weight: 600;
	letter-spacing: 0.06em;
}

.a-page-header__meta time {
	font-family: var(--ff-en);
	letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   Media / Thumbnail
   -------------------------------------------------------------------------- */

.a-media {
	position: relative;
	display: block;
	overflow: hidden;
	border-radius: var(--r-md);
	background: var(--c-surface-2);
}

.a-media::after {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(12, 10, 7, 0) 38%, rgba(12, 10, 7, 0.78) 100%);
	opacity: 0;
	transition: opacity var(--dur) var(--ease);
	pointer-events: none;
}

.a-media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s var(--ease);
}

.a-media--4x3 {
	aspect-ratio: 4 / 3;
}

.a-media--16x9 {
	aspect-ratio: 16 / 9;
}

.a-media--3x2 {
	aspect-ratio: 3 / 2;
}

.a-media--square {
	aspect-ratio: 1 / 1;
}

/* --------------------------------------------------------------------------
   Card: Work (制作実績)
   -------------------------------------------------------------------------- */

.a-card-work {
	position: relative;
	display: block;
	overflow: hidden;
	border-radius: var(--r-lg);
	isolation: isolate;
}

/* ピックアップ用バッジ。ガラス表現を使う数少ない小要素。 */
.a-card-work__badge {
	position: absolute;
	inset-block-start: var(--gap-sm);
	inset-inline-start: var(--gap-sm);
	z-index: 1;
	display: inline-flex;
	align-items: center;
	padding: 0.45em 1em;
	border: 1px solid var(--glass-1-border);
	border-radius: var(--r-pill);
	background: var(--glass-1-bg);
	-webkit-backdrop-filter: blur(var(--glass-1-blur));
	backdrop-filter: blur(var(--glass-1-blur));
	color: var(--c-primary-bright);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	font-weight: 700;
	letter-spacing: var(--ls-eyebrow);
	text-transform: uppercase;
}

.a-card-work__media {
	position: relative;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	background: var(--c-surface-2);
}

.a-card-work__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s var(--ease);
}

.a-card-work__media::after {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(12, 10, 7, 0.05) 34%, rgba(12, 10, 7, 0.86) 100%);
}

.a-card-work__body {
	position: absolute;
	inset-block-end: 0;
	inset-inline: 0;
	display: flex;
	flex-direction: column;
	gap: 0.45rem;
	padding: var(--space-card);
}

.a-card-work__title {
	color: var(--c-text-strong);
	font-size: var(--fs-h3);
	font-weight: 600;
	line-height: var(--lh-tight);
}

.a-card-work__meta {
	color: var(--c-muted);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	letter-spacing: 0.08em;
}

.a-card-work:hover .a-card-work__media img,
.a-card-work:focus-visible .a-card-work__media img {
	transform: scale(1.06);
}

.a-card-work--wide .a-card-work__media {
	aspect-ratio: 4 / 3;
}

@media (min-width: 700px) {
	.a-card-work--wide .a-card-work__media {
		aspect-ratio: 16 / 9;
	}
}

/* --------------------------------------------------------------------------
   Card: News / Article (お知らせ・記事一覧)
   -------------------------------------------------------------------------- */

.a-card-news {
	display: flex;
	flex-direction: column;
	overflow: hidden;
	border-radius: var(--r-lg);
	transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.a-card-news:hover {
	transform: translateY(-4px);
	border-color: var(--c-border);
}

.a-card-news > a {
	display: flex;
	flex-direction: column;
	height: 100%;
}

.a-card-news__media {
	position: relative;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: var(--c-surface-2);
}

.a-card-news__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s var(--ease);
}

.a-card-news:hover .a-card-news__media img {
	transform: scale(1.05);
}

.a-card-news__body {
	display: flex;
	flex: 1 1 auto;
	flex-direction: column;
	gap: 0.6rem;
	padding: var(--space-card);
}

.a-card-news__meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem 0.85rem;
	color: var(--c-muted);
	font-size: var(--fs-xs);
}

.a-card-news__meta time {
	font-family: var(--ff-en);
	letter-spacing: 0.08em;
}

.a-card-news__cat {
	display: inline-flex;
	align-items: center;
	padding: 0.25em 0.75em;
	border: 1px solid var(--c-border);
	border-radius: var(--r-pill);
	color: var(--c-primary-bright);
	font-weight: 600;
	letter-spacing: 0.04em;
}

.a-card-news__title {
	color: var(--c-text-strong);
	font-size: var(--fs-h3);
	font-weight: 600;
	line-height: var(--lh-tight);
}

.a-card-news:hover .a-card-news__title {
	color: var(--c-primary-bright);
}

.a-card-news__excerpt {
	color: var(--c-muted);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
}

.a-card-news__more {
	margin-top: auto;
	padding-top: 0.5rem;
	color: var(--c-primary-bright);
	font-size: var(--fs-xs);
	font-weight: 700;
	letter-spacing: 0.08em;
}

/* 横並びレイアウト(記事一覧向け) */
@media (min-width: 760px) {
	.a-card-news--row > a {
		flex-direction: row;
		align-items: stretch;
	}

	.a-card-news--row .a-card-news__media {
		flex: 0 0 38%;
		aspect-ratio: auto;
		min-height: 100%;
	}
}

/* --------------------------------------------------------------------------
   Card: Service (サービス紹介)
   -------------------------------------------------------------------------- */

.a-card-service {
	position: relative;
	display: block;
	overflow: hidden;
	border-radius: var(--r-lg);
	transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.a-card-service:hover {
	transform: translateY(-4px);
	border-color: var(--c-border);
}

.a-card-service > a {
	display: flex;
	flex-direction: column;
	height: 100%;
}

.a-card-service__media {
	position: relative;
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--c-surface-2);
}

.a-card-service__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s var(--ease);
}

.a-card-service:hover .a-card-service__media img {
	transform: scale(1.05);
}

.a-card-service__body {
	display: flex;
	flex: 1 1 auto;
	flex-direction: column;
	gap: 0.7rem;
	padding: var(--space-card);
}

.a-card-service__title {
	color: var(--c-text-strong);
	font-size: var(--fs-h3);
	font-weight: 600;
}

.a-card-service__text {
	color: var(--c-muted);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
}

.a-card-service__more {
	margin-top: auto;
	padding-top: 0.6rem;
	color: var(--c-primary-bright);
	font-size: var(--fs-xs);
	font-weight: 700;
	letter-spacing: 0.08em;
}

/* --------------------------------------------------------------------------
   Step (制作の流れ)
   -------------------------------------------------------------------------- */

.a-step {
	position: relative;
	display: flex;
	flex-direction: column;
	gap: 0.6rem;
	padding: var(--space-card);
	border: 1px solid var(--c-hairline);
	border-radius: var(--r-lg);
	background: var(--c-surface);
}

.a-step__num {
	color: var(--c-primary);
	font-family: var(--ff-display);
	font-size: 2.25rem;
	font-weight: 600;
	line-height: 1;
	opacity: 0.9;
}

.a-step__title {
	font-size: var(--fs-h3);
}

.a-step__text {
	color: var(--c-muted);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
}

/* --------------------------------------------------------------------------
   Feature (強み)
   -------------------------------------------------------------------------- */

.a-feature {
	display: flex;
	flex-direction: column;
	gap: 0.7rem;
	padding-block: 0.25rem;
	padding-inline-start: 1.25rem;
	border-inline-start: 2px solid var(--c-border);
}

.a-feature__title {
	font-size: var(--fs-h3);
}

.a-feature__text {
	color: var(--c-muted);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
}

/* --------------------------------------------------------------------------
   Contact panel
   -------------------------------------------------------------------------- */

.a-contact-panel {
	padding: clamp(1.5rem, 1rem + 2.4vw, 2.75rem);
	border-radius: var(--r-xl);
}

.a-contact-panel__note {
	margin-top: 1rem;
	color: var(--c-muted);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
}

.a-contact-panel__actions {
	margin-top: 1.5rem;
}

.a-contact-list {
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.a-contact-list dt {
	color: var(--c-primary);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	font-weight: 600;
	letter-spacing: var(--ls-eyebrow);
	text-transform: uppercase;
}

.a-contact-list dd {
	margin: 0.3rem 0 0;
	color: var(--c-text-strong);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
}

/* --------------------------------------------------------------------------
   Pagination
   -------------------------------------------------------------------------- */

.a-pagination,
.pagination {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 0.5rem;
	margin-top: calc(var(--gap) * 1.6);
}

.a-pagination .nav-links {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 0.5rem;
}

.a-pagination .page-numbers,
.pagination a,
.pagination span {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 44px;
	min-height: 44px;
	padding-inline: 0.75rem;
	border: 1px solid var(--c-hairline);
	border-radius: var(--r-pill);
	color: var(--c-muted-strong);
	font-family: var(--ff-en);
	font-size: var(--fs-sm);
	transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.a-pagination .page-numbers:hover,
.pagination a:hover {
	border-color: var(--c-primary);
	color: var(--c-primary-bright);
}

.a-pagination .page-numbers.current,
.pagination .current {
	border-color: transparent;
	background: linear-gradient(135deg, var(--c-primary-bright), var(--c-primary));
	color: #17120c;
	font-weight: 700;
}

.a-pagination .page-numbers.dots {
	border-color: transparent;
}

/* 前後の記事リンク */
.a-postnav {
	display: grid;
	gap: var(--gap-sm);
	margin-top: var(--space-card);
	grid-template-columns: 1fr;
}

@media (min-width: 700px) {
	.a-postnav {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

.a-postnav__item {
	display: flex;
	flex-direction: column;
	gap: 0.4rem;
	padding: 1.1rem 1.4rem;
	border: 1px solid var(--c-hairline);
	border-radius: var(--r-lg);
	background: var(--c-surface);
	transition: border-color var(--dur-fast) var(--ease);
}

.a-postnav__item:hover {
	border-color: var(--c-border);
}

.a-postnav__item--next {
	text-align: end;
}

.a-postnav__label {
	color: var(--c-primary);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	font-weight: 600;
	letter-spacing: var(--ls-eyebrow);
	text-transform: uppercase;
}

.a-postnav__title {
	color: var(--c-text-strong);
	font-size: var(--fs-sm);
	font-weight: 600;
	line-height: var(--lh-snug);
}

/* --------------------------------------------------------------------------
   Site footer
   -------------------------------------------------------------------------- */

.a-footer {
	margin-top: var(--space-section);
	border-top: 1px solid var(--c-hairline);
	background: linear-gradient(180deg, rgba(12, 10, 7, 0) 0%, rgba(9, 7, 5, 0.85) 100%);
}

.a-footer__top {
	display: grid;
	gap: calc(var(--gap) * 1.4);
	padding-block: clamp(2.5rem, 1.5rem + 4vw, 4.5rem);
	grid-template-columns: 1fr;
}

@media (min-width: 760px) {
	.a-footer__top {
		grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
	}
}

@media (min-width: 1000px) {
	.a-footer__top {
		grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr) minmax(0, 0.8fr);
	}
}

.a-footer__brand {
	display: flex;
	flex-direction: column;
	gap: 1rem;
	align-items: flex-start;
}

.a-footer__logo {
	display: inline-flex;
	align-items: center;
	color: var(--c-text-strong);
	font-family: var(--ff-display);
	font-size: 1.75rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

.a-footer__logo img {
	max-height: 38px;
	width: auto;
}

.a-footer__lead {
	max-width: 26rem;
	color: var(--c-muted);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
}

.a-footer__col {
	display: flex;
	flex-direction: column;
	gap: 0.9rem;
}

.a-footer__heading {
	color: var(--c-primary);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	font-weight: 600;
	letter-spacing: var(--ls-eyebrow);
	text-transform: uppercase;
}

.a-footer__col ul {
	display: flex;
	flex-direction: column;
}

.a-footer__col a {
	display: inline-flex;
	align-items: center;
	min-height: 40px;
	color: var(--c-muted-strong);
	font-size: var(--fs-sm);
}

.a-footer__col a:hover {
	color: var(--c-primary-bright);
}

.a-footer__address {
	color: var(--c-muted);
	font-size: var(--fs-sm);
	line-height: var(--lh-normal);
	font-style: normal;
}

.a-footer__address p + p {
	margin-top: 0.3rem;
}

.a-footer__social {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
}

.a-footer__social a {
	display: inline-flex;
	align-items: center;
	gap: 0.5em;
	min-height: 44px;
	padding-inline: 1rem;
	border: 1px solid var(--c-hairline);
	border-radius: var(--r-pill);
	color: var(--c-muted-strong);
	font-family: var(--ff-en);
	font-size: var(--fs-xs);
	letter-spacing: 0.06em;
}

.a-footer__social a:hover {
	border-color: var(--c-primary);
	color: var(--c-primary-bright);
}

.a-footer__bottom {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem 1.5rem;
	padding-block: 1.5rem;
	padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
	border-top: 1px solid var(--c-hairline);
	color: var(--c-muted);
	font-size: var(--fs-xs);
}

.a-footer__bottom p {
	margin: 0;
	font-family: var(--ff-en);
	letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   Page top button
   -------------------------------------------------------------------------- */

.a-pagetop {
	position: fixed;
	inset-block-end: max(1.25rem, env(safe-area-inset-bottom));
	inset-inline-end: 1.25rem;
	z-index: calc(var(--z-header) - 1);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 48px;
	height: 48px;
	border: 1px solid var(--glass-1-border);
	border-radius: 50%;
	background: var(--glass-1-bg);
	box-shadow: var(--glass-1-shadow);
	-webkit-backdrop-filter: blur(var(--glass-1-blur));
	backdrop-filter: blur(var(--glass-1-blur));
	color: var(--c-text-strong);
	opacity: 0;
	visibility: hidden;
	transform: translateY(0.75rem);
	transition:
		opacity var(--dur) var(--ease),
		transform var(--dur) var(--ease),
		visibility var(--dur) var(--ease);
}

.a-pagetop.is-visible {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.a-pagetop svg {
	width: 18px;
	height: 18px;
}

/* --------------------------------------------------------------------------
   Reveal on scroll
   -------------------------------------------------------------------------- */

.a-reveal {
	opacity: 0;
	transform: translateY(18px);
	transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.a-reveal.is-visible {
	opacity: 1;
	transform: none;
}

@media (prefers-reduced-motion: reduce) {
	.a-reveal {
		opacity: 1;
		transform: none;
		transition: none;
	}
}

/* JS 無効時は必ず表示する */
.no-js .a-reveal {
	opacity: 1;
	transform: none;
}