@property --sainou-cover-page-width {
	syntax: "<length>";
	inherits: true;
	initial-value: 0px;
}

html:has(.sainou-top-cover) {
	container: sainou-cover-page / inline-size;
}

body:has(.sainou-top-cover) {
	/*
	 * htmlのコンテナ幅をbody上で計算済みの長さに変換する。
	 * 以降にテーマ側のクエリコンテナがあっても参照先は変わらない。
	 */
	--sainou-cover-page-width: 100cqw;
}

/*
 * テーマ側の
 * .is-layout-constrained :is(.alignfull, .vk_outer-width-full)
 * より詳細度を高くし、全幅ブロックのmax-width制限を確実に解除する。
 */
section.sainou-top-cover.alignfull {
	--sainou-cover-text-color: var(--wp--preset--color--text-normal, #2b537b);
	position: relative;
	inset-inline-start: 50%;
	box-sizing: border-box;
	container: sainou-cover-viewport / inline-size;
	inline-size: min(var(--sainou-cover-page-width), 2560px) !important;
	width: min(var(--sainou-cover-page-width), 2560px) !important;
	max-inline-size: none !important;
	max-width: none !important;
	margin-block: 0;
	translate: -50% 0;
	overflow: hidden;
}

.sainou-top-cover *,
.sainou-top-cover *::before,
.sainou-top-cover *::after {
	box-sizing: border-box;
}

.sainou-top-cover__stage {
	--sainou-cover-background-x: 50%;
	--sainou-cover-background-y: 50%;
	--sainou-cover-wide-extension: 0px;
	position: relative;
	display: grid;
	inline-size: min(100%, 1920px);
	margin-inline: auto;
}

.sainou-top-cover__background {
	background-image: var(--sainou-cover-sp-image);
	background-position: var(--sainou-cover-background-x) var(--sainou-cover-background-y);
	background-repeat: no-repeat;
	background-size: var(--sainou-cover-sp-background-size, cover);
}

.sainou-top-cover__catchphrase {
	z-index: 1;
	margin: 0;
	font-style: normal;
	font-weight: 500;
	text-orientation: upright;
	white-space: nowrap;
	writing-mode: vertical-rl;
}

.sainou-top-cover__catchphrase br {
	display: block;
}

.sainou-top-cover__menu {
	z-index: 1;
	display: grid;
	margin: 0;
	padding: 0;
}

.sainou-top-cover__menu-link {
	position: relative;
	display: grid;
	grid-template-columns: minmax(0, 1fr) 18px;
	align-items: center;
	color: var(--sainou-cover-text-color);
	font-weight: 500;
	text-decoration: none;
	transition: opacity 240ms ease;
}

.sainou-top-cover__menu-text {
	min-inline-size: 0;
}

.sainou-top-cover__arrow {
	position: relative;
	display: block;
	inline-size: 18px;
	block-size: 18px;
	transition: transform 240ms ease;
}

.sainou-top-cover__arrow img {
	position: absolute;
	inset: 0;
	display: block;
	inline-size: 18px;
	block-size: 18px;
	transition: opacity 180ms ease;
}

.sainou-top-cover__arrow-hover {
	opacity: 0;
}

.sainou-top-cover__menu-link:focus-visible {
	outline: 2px solid currentColor;
	outline-offset: 5px;
}

.sainou-top-cover__editor-message {
	z-index: 2;
	align-self: end;
	margin: 20px;
	padding: 10px 14px;
	border-radius: 4px;
	background: rgb(255 255 255 / 88%);
	color: #1e1e1e;
	font: 13px/1.5 sans-serif;
}

@container sainou-cover-viewport (width < 720px) {
	.sainou-top-cover__stage {
		grid-template-columns: minmax(0, 1fr);
		grid-template-rows: 480px auto;
		min-block-size: 850px;
	}

	.sainou-top-cover__background {
		grid-area: 1 / 1;
		border-start-end-radius: 65px;
	}

	.sainou-top-cover__catchphrase {
		position: absolute;
		inset-block-start: clamp(18px, calc(10.185185cqw - 18.666667px), 40px);
		inset-inline-start: 100px;
		color: #fff;
		font-size: 18px;
		line-height: 32px;
		letter-spacing: 0.2em;
	}

	.sainou-top-cover__menu {
		grid-area: 2 / 1;
		inline-size: calc(100% - 50px);
		max-inline-size: 576px;
		margin-block-start: 15px;
		margin-block-end: 77px;
		margin-inline: auto;
		gap: 10px;
	}

	.sainou-top-cover__menu-link {
		min-block-size: 80px;
		padding-inline: 20px;
		border-block-start: 1px solid var(--sainou-cover-text-color);
		border-inline-end: 1px solid var(--sainou-cover-text-color);
		border-start-end-radius: 23px;
		font-size: 18px;
		line-height: 1.45;
		letter-spacing: 0.075em;
	}

	.sainou-top-cover__arrow {
		justify-self: end;
	}

	.sainou-top-cover__editor-message {
		grid-area: 2 / 1;
	}
}

@container sainou-cover-viewport (width < 360px) {
	.sainou-top-cover__stage {
		grid-template-rows: 133.333cqw auto;
		min-block-size: auto;
	}

	.sainou-top-cover__background {
		border-start-end-radius: 18.056cqw;
	}

	.sainou-top-cover__catchphrase {
		font-size: max(16px, 5cqw);
		line-height: max(28px, 8.889cqw);
	}

	.sainou-top-cover__menu {
		inline-size: calc(100% - 13.889cqw);
		margin-block-start: 2.778cqw;
		gap: 2.778cqw;
	}

	.sainou-top-cover__menu-link {
		min-block-size: 22.222cqw;
		padding-inline: 5.556cqw;
		border-start-end-radius: 6.389cqw;
		font-size: max(16px, 5cqw);
		line-height: 1.45;
	}
}

@container sainou-cover-viewport (width >= 720px) {
	.sainou-top-cover__stage {
		--sainou-cover-image-width: clamp(
			510px,
			min(calc(78cqw - 51.6px), calc(73.571429cqw + 2.428571px)),
			1415px
		);
		--sainou-cover-catch-right: clamp(
			60px,
			max(calc(12cqw - 26.4px), calc(14.571429cqw - 57.771429px)),
			222px
		);
		grid-template-columns: var(--sainou-cover-image-width) minmax(0, 1fr);
		grid-template-rows: 196px 449px 205px;
		block-size: 850px;
	}

	.sainou-top-cover__background {
		grid-area: 1 / 1 / -1 / 2;
		border-start-end-radius: 80px;
	}

	.sainou-top-cover__catchphrase {
		grid-area: 2 / 2;
		justify-self: end;
		margin-block-start: var(--sainou-cover-catch-right);
		color: var(--sainou-cover-text-color);
		font-size: 28px;
		line-height: 50px;
		letter-spacing: 0.1em;
	}

	.sainou-top-cover__menu {
		grid-area: 3 / 2;
		justify-self: end;
		align-self: start;
		inline-size: 182px;
		/*
		 * 720px → 15px
		 * 1220px → 79px
		 * の2点を結ぶ線形補間。
		 */
		margin-right: clamp(15px, calc(12.8cqi - 77.16px), 79px);
		gap: 37px;
	}

	.sainou-top-cover__menu-link {
		block-size: 21px;
		margin-block: calc((1em - 1lh) / 2);
		font-size: 16px;
		line-height: 21px;
		letter-spacing: 0;
	}

	.sainou-top-cover__arrow {
		justify-self: end;
		align-self: center;
		margin-top: 2px;
	}

	.sainou-top-cover__editor-message {
		grid-area: 3 / 2;
	}
}

/*
 * 背景画像の切替は、キャッチフレーズとメニューのレイアウト境界から独立させる。
 * 境界値は重複せず、576px・960px・1370pxではそれぞれ新しい画像を使用する。
 */
@container sainou-cover-viewport (width < 576px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-sp-360-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-sp-360-y);
	}
}

@container sainou-cover-viewport (width >= 468px) and (width < 576px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-sp-576-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-sp-576-y);
	}
}

@container sainou-cover-viewport (width >= 576px) and (width < 960px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-tab-576-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-tab-576-y);
	}

	.sainou-top-cover__background {
		background-image: var(--sainou-cover-tab-image);
		background-size: cover;
	}
}

@container sainou-cover-viewport (width >= 768px) and (width < 960px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-tab-960-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-tab-960-y);
	}
}

@container sainou-cover-viewport (width >= 960px) and (width < 1370px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-pc-960-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-pc-960-y);
	}

	.sainou-top-cover__background {
		background-image: var(--sainou-cover-pc-image);
		background-size: var(--sainou-cover-pc-background-size, cover);
	}
}

@container sainou-cover-viewport (width >= 1090px) and (width < 1370px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-pc-1220-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-pc-1220-y);
	}
}

@container sainou-cover-viewport (width >= 1295px) and (width < 1370px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-pc-1370-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-pc-1370-y);
	}
}

@container sainou-cover-viewport (width >= 1370px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-pc-large-1370-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-pc-large-1370-y);
	}

	.sainou-top-cover__background {
		background-image: var(--sainou-cover-pc-large-image);
		background-size: cover;
	}

}

@container sainou-cover-viewport (width >= 1645px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-pc-large-1920-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-pc-large-1920-y);
	}
}

@container sainou-cover-viewport (width >= 1920px) {
	.sainou-top-cover__stage {
		--sainou-cover-wide-extension: calc((100cqw - 1920px) / 2);
	}

	.sainou-top-cover__background {
		inline-size: calc(100% + var(--sainou-cover-wide-extension));
		margin-inline-start: calc(0px - var(--sainou-cover-wide-extension));
	}
}

@container sainou-cover-viewport (width >= 2240px) {
	.sainou-top-cover__stage {
		--sainou-cover-background-x: var(--sainou-cover-bg-pc-large-2560-x);
		--sainou-cover-background-y: var(--sainou-cover-bg-pc-large-2560-y);
	}
}

/*
 * Chrome 140+ / Safari 26+では、ACFの各基準値をコンテナ実幅で連続補間する。
 * CSS typed arithmetic未対応ブラウザーでは、上記の段階切替を使用する。
 */
@supports (width: calc((1px / 1px) * 1%)) {
	@container sainou-cover-viewport (width < 576px) {
		.sainou-top-cover__stage {
			--sainou-cover-progress: clamp(0, calc((100cqw - 360px) / 216px), 1);
			--sainou-cover-background-x: calc(var(--sainou-cover-bg-sp-360-x) + (var(--sainou-cover-bg-sp-576-x) - var(--sainou-cover-bg-sp-360-x)) * var(--sainou-cover-progress));
			--sainou-cover-background-y: calc(var(--sainou-cover-bg-sp-360-y) + (var(--sainou-cover-bg-sp-576-y) - var(--sainou-cover-bg-sp-360-y)) * var(--sainou-cover-progress));
		}
	}

	@container sainou-cover-viewport (width >= 576px) and (width < 960px) {
		.sainou-top-cover__stage {
			--sainou-cover-progress: clamp(0, calc((100cqw - 576px) / 384px), 1);
			--sainou-cover-background-x: calc(var(--sainou-cover-bg-tab-576-x) + (var(--sainou-cover-bg-tab-960-x) - var(--sainou-cover-bg-tab-576-x)) * var(--sainou-cover-progress));
			--sainou-cover-background-y: calc(var(--sainou-cover-bg-tab-576-y) + (var(--sainou-cover-bg-tab-960-y) - var(--sainou-cover-bg-tab-576-y)) * var(--sainou-cover-progress));
		}
	}

	@container sainou-cover-viewport (width >= 960px) and (width < 1220px) {
		.sainou-top-cover__stage {
			--sainou-cover-progress: clamp(0, calc((100cqw - 960px) / 260px), 1);
			--sainou-cover-background-x: calc(var(--sainou-cover-bg-pc-960-x) + (var(--sainou-cover-bg-pc-1220-x) - var(--sainou-cover-bg-pc-960-x)) * var(--sainou-cover-progress));
			--sainou-cover-background-y: calc(var(--sainou-cover-bg-pc-960-y) + (var(--sainou-cover-bg-pc-1220-y) - var(--sainou-cover-bg-pc-960-y)) * var(--sainou-cover-progress));
		}
	}

	@container sainou-cover-viewport (width >= 1220px) and (width < 1370px) {
		.sainou-top-cover__stage {
			--sainou-cover-progress: clamp(0, calc((100cqw - 1220px) / 150px), 1);
			--sainou-cover-background-x: calc(var(--sainou-cover-bg-pc-1220-x) + (var(--sainou-cover-bg-pc-1370-x) - var(--sainou-cover-bg-pc-1220-x)) * var(--sainou-cover-progress));
			--sainou-cover-background-y: calc(var(--sainou-cover-bg-pc-1220-y) + (var(--sainou-cover-bg-pc-1370-y) - var(--sainou-cover-bg-pc-1220-y)) * var(--sainou-cover-progress));
		}
	}

	@container sainou-cover-viewport (width >= 1370px) and (width < 1920px) {
		.sainou-top-cover__stage {
			--sainou-cover-progress: clamp(0, calc((100cqw - 1370px) / 550px), 1);
			--sainou-cover-background-x: calc(var(--sainou-cover-bg-pc-large-1370-x) + (var(--sainou-cover-bg-pc-large-1920-x) - var(--sainou-cover-bg-pc-large-1370-x)) * var(--sainou-cover-progress));
			--sainou-cover-background-y: calc(var(--sainou-cover-bg-pc-large-1370-y) + (var(--sainou-cover-bg-pc-large-1920-y) - var(--sainou-cover-bg-pc-large-1370-y)) * var(--sainou-cover-progress));
		}
	}

	@container sainou-cover-viewport (width >= 1920px) and (width < 2560px) {
		.sainou-top-cover__stage {
			--sainou-cover-progress: clamp(0, calc((100cqw - 1920px) / 640px), 1);
			--sainou-cover-background-x: calc(var(--sainou-cover-bg-pc-large-1920-x) + (var(--sainou-cover-bg-pc-large-2560-x) - var(--sainou-cover-bg-pc-large-1920-x)) * var(--sainou-cover-progress));
			--sainou-cover-background-y: calc(var(--sainou-cover-bg-pc-large-1920-y) + (var(--sainou-cover-bg-pc-large-2560-y) - var(--sainou-cover-bg-pc-large-1920-y)) * var(--sainou-cover-progress));
		}
	}

	@container sainou-cover-viewport (width >= 2560px) {
		.sainou-top-cover__stage {
			--sainou-cover-background-x: var(--sainou-cover-bg-pc-large-2560-x);
			--sainou-cover-background-y: var(--sainou-cover-bg-pc-large-2560-y);
		}
	}
}

@media (any-hover: hover) and (pointer: fine) {
	.sainou-top-cover__menu:hover .sainou-top-cover__menu-link:not(:hover) {
		opacity: 0.5;
	}

	.sainou-top-cover__menu-link:hover .sainou-top-cover__arrow {
		transform: translateX(5px);
	}

	.sainou-top-cover__menu-link:hover .sainou-top-cover__arrow-normal {
		opacity: 0;
	}

	.sainou-top-cover__menu-link:hover .sainou-top-cover__arrow-hover {
		opacity: 1;
	}
}

@media (prefers-reduced-motion: reduce) {
	.sainou-top-cover__menu-link,
	.sainou-top-cover__arrow,
	.sainou-top-cover__arrow img {
		transition-duration: 0.01ms;
	}
}

@container sainou-cover-viewport (width >= 1220px) {
	.sainou-top-cover__menu {
		/*
		 * 1220px → 79px
		 * 1920px → 176px
		 * 1920px以上は176pxで固定。
		 */
		margin-right: clamp(
			79px,
			calc(13.8571428571cqi - 90.0285714286px),
			176px
		);
	}
}