/**
 * フロントページ（LP）v2
 *
 * ヒーロー動画・セクション画像・空気感で魅せるレイアウト。
 * 金剛峯寺の荘厳さ、貴船の静謐さ、星のやの余白、BYAKU の物語性。
 */

/* =========================================================================
   ヒーロー：全幅動画 — 中央配置で荘厳に
   ========================================================================= */
body.home .kamon-hero {
	position: relative;
	min-height: 100vh;
	min-height: 100dvh;
	padding: 0;
	overflow: hidden;
	background: var(--ka-color-dark);
	display: flex;
	align-items: center;
	justify-content: center;
}

body.home .kamon-hero__media {
	display: block;
	position: absolute;
	inset: 0;
	z-index: 0;
	background-color: var(--ka-color-dark);
	background-size: cover;
	background-position: center;
	background-image: var(--kamon-hero-poster, none);
	transform: scale(1.08);
	transform-origin: center center;
	will-change: transform;
}

body.home .kamon-hero__video {
	position: absolute;
	inset: 0;
	width: 100%; height: 100%;
	object-fit: cover;
	opacity: 0.68;
}

body.home .kamon-hero__scrim {
	position: absolute;
	inset: 0;
	z-index: 1;
	background:
		radial-gradient(ellipse at 50% 78%, rgba(8, 7, 6, 0.46) 0%, transparent 62%),
		linear-gradient(180deg, rgba(10, 9, 8, 0.6) 0%, rgba(10, 9, 8, 0.33) 38%, rgba(10, 9, 8, 0.72) 100%);
}

body.home .kamon-hero__inner {
	position: relative;
	z-index: 2;
	padding: clamp(7rem, 18vw, 12rem) 0 clamp(5rem, 12vw, 8rem);
	text-align: center;
	will-change: transform;
}

body.home .kamon-hero__inner--grid {
	grid-template-columns: 1fr;
	gap: clamp(1.5rem, 4vw, 2.5rem);
}

body.home .kamon-hero__visual {
	order: -1;
}

body.home .kamon-hero__emblem {
	width: min(40vw, 160px);
	aspect-ratio: 1 / 1;
	display: flex;
	align-items: center;
	justify-content: center;
	color: rgba(242, 239, 231, 0.7);
	filter: drop-shadow(0 2px 16px rgba(0, 0, 0, 0.3));
	margin: 0 auto;
	animation: kamon-hero-emblem-float 9s ease-in-out infinite;
}

body.home .kamon-hero__svg {
	opacity: 0.85;
}

body.home .kamon-hero__logo-img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	filter: invert(1) brightness(0.92);
	opacity: 0.94;
}

@keyframes kamon-hero-emblem-float {
	0%, 100% { transform: translate3d(0, 0, 0); }
	50% { transform: translate3d(0, -7px, 0); }
}

@keyframes kamon-hero-fade-up {
	from {
		opacity: 0;
		transform: translate3d(0, 22px, 0);
	}
	to {
		opacity: 1;
		transform: translate3d(0, 0, 0);
	}
}

body.home .kamon-hero__eyebrow {
	animation: kamon-hero-fade-up 1s cubic-bezier(0.22, 1, 0.36, 1) 0.08s both;
}

body.home .kamon-hero__title {
	animation: kamon-hero-fade-up 1.05s cubic-bezier(0.22, 1, 0.36, 1) 0.24s both;
}

body.home .kamon-hero__lead {
	animation: kamon-hero-fade-up 1s cubic-bezier(0.22, 1, 0.36, 1) 0.42s both;
}

body.home .kamon-hero__actions {
	animation: kamon-hero-fade-up 1s cubic-bezier(0.22, 1, 0.36, 1) 0.58s both;
}

body.home .kamon-hero__eyebrow {
	color: rgba(242, 239, 231, 0.5);
	letter-spacing: 0.3em;
	font-size: 0.65rem;
}

body.home .kamon-hero__title {
	color: rgba(242, 239, 231, 0.95);
	font-size: clamp(2.2rem, 6vw, 3.6rem);
	letter-spacing: 0.16em;
	line-height: 1.4;
	text-shadow: 0 8px 26px rgba(0, 0, 0, 0.38);
}

body.home .kamon-hero__lead {
	color: rgba(242, 239, 231, 0.65);
	max-width: 26rem;
	font-size: var(--ka-text-sm);
	line-height: var(--ka-leading-loose);
}

body.home .kamon-hero__copy {
	max-width: 40rem;
}

body.home .kamon-hero .kamon-btn--primary {
	background: rgba(242, 239, 231, 0.12);
	color: rgba(242, 239, 231, 0.95);
	border-color: rgba(242, 239, 231, 0.45);
	backdrop-filter: blur(4px);
}
body.home .kamon-hero .kamon-btn--primary:hover,
body.home .kamon-hero .kamon-btn--primary:focus-visible {
	background: rgba(242, 239, 231, 0.92);
	color: var(--ka-color-dark);
	border-color: rgba(242, 239, 231, 0.92);
}

body.home .kamon-hero .kamon-btn--ghost {
	color: rgba(242, 239, 231, 0.7);
	border-color: rgba(242, 239, 231, 0.2);
	background: transparent;
}
body.home .kamon-hero .kamon-btn--ghost:hover,
body.home .kamon-hero .kamon-btn--ghost:focus-visible {
	color: rgba(242, 239, 231, 0.95);
	border-color: rgba(242, 239, 231, 0.5);
}

/* モバイル: 動画表示を維持（reduce-motion は下で別途OFF） */
@media (max-width: 768px) {
	body.home .kamon-hero__video {
		display: block;
		opacity: 0.74;
	}
	body.home .kamon-hero__scrim {
		background:
			radial-gradient(ellipse at 50% 78%, rgba(8, 7, 6, 0.35) 0%, transparent 62%),
			linear-gradient(180deg, rgba(10, 9, 8, 0.5) 0%, rgba(10, 9, 8, 0.25) 38%, rgba(10, 9, 8, 0.62) 100%);
	}
	body.home .kamon-hero { min-height: 100vh; min-height: 100dvh; }
}

@media (prefers-reduced-motion: reduce) {
	body.home .kamon-hero__video { display: none; }
	body.home .kamon-hero__media,
	body.home .kamon-hero__inner {
		transform: none !important;
		will-change: auto;
	}
	body.home .kamon-hero__emblem {
		animation: none;
	}
	body.home .kamon-hero__eyebrow,
	body.home .kamon-hero__title,
	body.home .kamon-hero__lead,
	body.home .kamon-hero__actions {
		animation: none;
		opacity: 1;
		transform: none;
	}
	body.home .kamon-section-banner__img {
		transform: none !important;
		will-change: auto;
	}
}


/* =========================================================================
   ヘッダー：ヒーロー上では透過
   ========================================================================= */
body.home .kamon-header {
	position: fixed;
	left: 0; right: 0; top: 0;
	background: transparent;
	backdrop-filter: none;
	border-bottom-color: transparent;
}

body.home .kamon-header .kamon-header__logo-text,
body.home .kamon-header .kamon-header__logo {
	color: rgba(242, 239, 231, 0.9);
}

body.home .kamon-header .kamon-header__tagline {
	color: rgba(242, 239, 231, 0.5);
}

body.home .kamon-header .kamon-nav__list a {
	color: rgba(242, 239, 231, 0.7);
}

body.home .kamon-header .kamon-nav__list a:hover,
body.home .kamon-header .kamon-nav__list a:focus-visible {
	color: rgba(242, 239, 231, 0.95);
}

body.home .kamon-header .kamon-nav__list a::after {
	background: rgba(242, 239, 231, 0.6);
}

body.home .kamon-header .kamon-nav__list .kamon-nav__cta {
	background: rgba(248, 246, 240, 0.96);
	color: #1a1816;
	border-color: rgba(248, 246, 240, 0.96);
	box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
}

body.home .kamon-header .kamon-nav__list .kamon-nav__cta:hover,
body.home .kamon-header .kamon-nav__list .kamon-nav__cta:focus-visible {
	background: #ffffff;
	color: #13110f;
	border-color: #ffffff;
}

body.home .kamon-header .kamon-nav-toggle {
	border-color: rgba(242, 239, 231, 0.3);
}

/* 親spanに background を当てない（塗りつぶしで■状になる）。上下は border、中央は ::after のみ */
body.home .kamon-header .kamon-nav-toggle__lines {
	border-top-color: rgba(242, 239, 231, 0.85);
	border-bottom-color: rgba(242, 239, 231, 0.85);
	background-color: transparent;
}

body.home .kamon-header .kamon-nav-toggle__lines::after {
	background: rgba(242, 239, 231, 0.85);
}

body.home .kamon-header .kamon-header__logo-img {
	filter: invert(1) brightness(0.9);
}

/* スクロール後 */
body.home .kamon-header.is-scrolled {
	background: rgba(242, 239, 231, 0.92);
	backdrop-filter: blur(16px);
	border-bottom-color: rgba(216, 210, 200, 0.6);
}

body.home .kamon-header.is-scrolled .kamon-header__logo-text,
body.home .kamon-header.is-scrolled .kamon-header__logo {
	color: var(--ka-ink);
}

body.home .kamon-header.is-scrolled .kamon-header__tagline {
	color: var(--ka-muted);
}

body.home .kamon-header.is-scrolled .kamon-nav__list a {
	color: var(--ka-color-muted);
}

body.home .kamon-header.is-scrolled .kamon-nav__list a:hover,
body.home .kamon-header.is-scrolled .kamon-nav__list a:focus-visible {
	color: var(--ka-ink);
}

body.home .kamon-header.is-scrolled .kamon-nav__list a::after {
	background: var(--ka-color-accent);
}

body.home .kamon-header.is-scrolled .kamon-nav__list .kamon-nav__cta {
	background: var(--ka-color-accent);
	color: #faf8f3;
	border-color: var(--ka-color-accent);
	box-shadow: 0 6px 18px rgba(122, 59, 59, 0.2);
}

body.home .kamon-header.is-scrolled .kamon-nav__list .kamon-nav__cta:hover,
body.home .kamon-header.is-scrolled .kamon-nav__list .kamon-nav__cta:focus-visible {
	background: #6a2f2f;
	color: #faf8f3;
	border-color: #6a2f2f;
}

body.home .kamon-header.is-scrolled .kamon-header__logo-img {
	filter: none;
}

body.home .kamon-header.is-scrolled .kamon-nav-toggle {
	border-color: var(--ka-line-strong);
}

body.home .kamon-header.is-scrolled .kamon-nav-toggle__lines {
	border-top-color: var(--ka-ink);
	border-bottom-color: var(--ka-ink);
	background-color: transparent;
}

body.home .kamon-header.is-scrolled .kamon-nav-toggle__lines::after {
	background: var(--ka-ink);
}

/* =========================================================================
   セクション区切り：境界線ではなく余白と地色の変化で
   ========================================================================= */
body.home .kamon-section {
	border-bottom: none;
}

body.home .kamon-section__head::before {
	content: "";
	display: block;
	width: 1.75rem;
	height: 1px;
	margin-bottom: 1.25rem;
	background: var(--ka-color-accent);
	opacity: 0.5;
}


/* =========================================================================
   イントロ：テキスト + 雰囲気画像
   ========================================================================= */
body.home .kamon-intro-split {
	display: grid;
	gap: clamp(2.5rem, 6vw, 4rem);
	align-items: center;
}

@media (min-width: 880px) {
	body.home .kamon-intro-split {
		grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.8fr);
	}
}

body.home .kamon-intro-split__figure {
	margin: 0;
	overflow: hidden;
	border-radius: var(--ka-radius-sm);
	aspect-ratio: 3 / 2;
}

body.home .kamon-intro-split__figure .kamon-section-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
}

body.home .kamon-intro-split__figure img {
	transition: transform 6s var(--ka-ease);
}

body.home .kamon-intro-split__figure:hover img {
	transform: scale(1.03);
}


/* =========================================================================
   サービス概要：左画像＋右テキスト
   ========================================================================= */
body.home .kamon-section--alt {
	background: var(--ka-color-bg-warm);
}

body.home .kamon-split--overview {
	display: grid;
	gap: clamp(2.5rem, 6vw, 4rem);
	align-items: start;
}

@media (min-width: 900px) {
	body.home .kamon-split--overview {
		grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
	}
}

body.home .kamon-split__media {
	margin: 0;
	overflow: hidden;
}


/* =========================================================================
   価値：横長バナー画像
   ========================================================================= */
body.home .kamon-section--value .kamon-section__head {
	margin-bottom: clamp(1.5rem, 4vw, 2rem);
}

body.home .kamon-section-banner {
	margin: 0 0 clamp(2.5rem, 6vw, 3.5rem);
	overflow: hidden;
	aspect-ratio: 21/7;
	max-height: 300px;
}

body.home .kamon-section-banner__img {
	width: 100%; height: 100%;
	object-fit: cover; display: block;
	filter: grayscale(0.15) contrast(0.95);
	transform-origin: center center;
	will-change: transform;
}


/* =========================================================================
   フロー：テキスト＋縦画像
   ========================================================================= */
body.home .kamon-section--flow {
	background: var(--ka-color-bg-warm);
}

body.home .kamon-split--flow {
	display: grid;
	gap: clamp(2.5rem, 6vw, 4rem);
	align-items: start;
}

@media (min-width: 900px) {
	body.home .kamon-split--flow {
		grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.6fr);
	}

	body.home .kamon-split--flow .kamon-split__media--sticky {
		position: sticky;
		top: 6rem;
	}
}

@media (max-width: 899px) {
	body.home .kamon-split--flow .kamon-split__media {
		max-width: 24rem;
		margin-left: auto; margin-right: auto;
	}
}


/* =========================================================================
   CTA：淡い背景写真 + カード
   ========================================================================= */
body.home .kamon-section--cta-rich {
	position: relative;
	overflow: hidden;
}

body.home .kamon-section--cta-rich::before {
	content: "";
	position: absolute; inset: 0;
	background-image: var(--kamon-cta-bg, none);
	background-size: cover;
	background-position: center;
	opacity: 0.08;
	filter: grayscale(0.3);
	pointer-events: none;
}

body.home .kamon-section--cta-rich .kamon-container {
	position: relative; z-index: 1;
}

body.home .kamon-section--cta-rich .kamon-cta-card {
	background: rgba(250, 248, 243, 0.88);
	backdrop-filter: blur(8px);
}


/* =========================================================================
   FAQ ティーザー
   ========================================================================= */
body.home .kamon-faq-teaser {
	border-left: 2px solid var(--ka-color-accent);
	padding-left: clamp(2rem, 5vw, 2.75rem);
	background: transparent;
}


/* =========================================================================
   セクション画像共通
   ========================================================================= */
.kamon-section-img {
	width: 100%; height: auto;
	display: block; object-fit: cover;
}

body.home .kamon-split__media img {
	transition: transform 6s var(--ka-ease);
}

body.home .kamon-split__media:hover img {
	transform: scale(1.03);
}