/*===============================================================================
共通
================================================================================*/
.front-box{
	position: relative;
	max-width: calc( 100% - 1rem );
	margin-inline: auto;
	padding-top: calc( 1.5rem + 6rem + var(--g-sec--sm) );
	padding-bottom: clamp(2.5rem, 0.714rem + 4.76vw, 5rem);
	padding-left: clamp(0.5rem, -0.929rem + 3.81vw, 2.5rem);
	padding-right: clamp(0.5rem, -0.929rem + 3.81vw, 2.5rem);
	background: var(--c-light);
	border-radius: var(--bd-r--sm);
}
@media (min-width: 600px){
	.front-box{
		max-width: 1200px;
		padding-top: calc( 1.5rem + 9rem + var(--g-sec--sm) );
	}
}

.front-box__head{
	position: absolute;
	top: 1.5rem;
	left: calc( clamp(1rem, 0.643rem + 0.95vw, 1.5rem) * -1 );
	width: calc( 100% + 1.5rem );
}
.front-box__title{
	position: absolute;
	text-align: center;
	width: 100%;
	padding: 1.25rem 1rem;
	color: var(--c-light);
}
.front-box__title.--course{ background: #a6d3c8; }
.front-box__title.--voice{ background: #E4D78E; }
.front-box__title.--flow{ background: #E8A992; }
.front-box__title.--faq{ background: #B2D0EB; }
.front-box__title::before {
	content: '';
	position: absolute;
	top: 100%;
	left: 0;
	z-index: -1;
	border: none;
	border-bottom: solid 1.75rem transparent;
	border-right: solid 1.5rem var(--c-gray--dark);
}
.front-box__title-icon{
	position: absolute;
	bottom: 0;
	left: 1rem;
	width: 11%;
	min-width: 5rem;
}
@media (min-width: 600px){
	.front-box__title-icon{
		left: 17%;
	}
}
/*===============================
* ボディ
* =================================*/
.front-box__body:not(:last-child){
	margin-bottom: var(--g-sec--xs);
}

/*===============================
* フット
* =================================*/
.front-box__btn{
	text-align: center;
}

/*===============================================================================
MV
================================================================================*/
.f-mv{
	margin-bottom: var(--g-sec--lg);
}
.f-mv__inner{
	position: relative;
	padding: 131% 0 var(--g-sec--md);
}
@media (min-width: 600px){
	.f-mv__inner{
		padding: 25% 0 var(--g-sec--md);
	}
}
/*===============================
* 背景画像
* =================================*/
.f-mv__bgi{
	position: absolute;
	top: 0;
	left: calc( 50% - 50vw );
	z-index: -1;
	max-width: 100vw;
	width: 100vw;
}
@media (min-width: 600px){
	.f-mv__bgi{
		height: 100%;
	}
}
.f-mv__bgi img{
	display: block;
	width: 100%;
	height: 100%;
	aspect-ratio: 390 / 718;
	object-fit: cover;
	object-position: 50% 50%;
}
@media (min-width: 600px){
	.f-mv__bgi img{
		aspect-ratio: auto;
	}
}

.f-mv__head{
	--c-current: var(--c-light);
	--position: 2px;
	--blur: 1.5px;
	text-shadow: var(--position) var(--position) var(--blur) var(--c-current), 
		calc( var(--position) * -1 ) calc( var(--position) * -1 ) var(--blur) var(--c-current), 
		calc( var(--position) * -1 ) var(--position) var(--blur) var(--c-current), 
		var(--position) calc( var(--position) * -1 ) var(--blur) var(--c-current), 
		0 var(--position) var(--blur) var(--c-current), 
		0 calc( var(--position) * -1 ) var(--blur) var(--c-current), 
		calc( var(--position) * -1 ) 0 var(--blur) var(--c-current), 
		var(--position) 0 var(--blur) var(--c-current);
	margin-bottom: 45%;
}
@media (min-width: 600px){
	.f-mv__head{
		margin-bottom: var(--g-sec--md);
	}
}
.f-mv__title{
	position: relative;
	margin-bottom: 2rem;
}
.f-mv__title-img{
	position: absolute;
	bottom: 100%;
	left: 0;
	max-width: 422px;
	width: 35%;
	min-width: 14.75rem;
}
@media (min-width: 600px){
	.f-mv__title-img{
		bottom: 0;
	}
}
.f-mv__title span{
	position: relative;
	z-index: 1;
	font-weight: var(--fw-lg);
	font-size: clamp(1.75rem, 1.571rem + 0.48vw, 2rem);
}
@media (min-width: 600px){
	.f-mv__title span{
		margin-left: 29%;
	}
}
.f-mv__lead{
	font-size: clamp(1.125rem, 1.036rem + 0.24vw, 1.25rem);
}
.f-mv__body{
	margin-bottom: var(--g-sec--md);
}
.f-mv__link{
	display: block;
	width: 100%;
	min-width: 20rem;
	transition: var(--ani-t--normal) ease-out;
}
@media (min-width: 600px){
	.f-mv__link{
		width: 44%;
	}
}
.f-mv__link:is(:hover, :focus){
	opacity: .7;
}



/*===============================================================================
お知らせ
================================================================================*/
.f-info__inner{
	max-width: var(--width-sm);
	margin-inline: auto;
	padding: var(--g-sec--xs) 1.5rem;
	background: rgba(255, 255, 255, 0.6);
	backdrop-filter: blur(20px);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
}
/*===============================
* head
* =================================*/
.f-info__head{
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	gap: 1em;
	padding-bottom: .5rem;
	border-bottom: 1px solid var(--c-dark);
}
.f-info__title{
	display: flex;
	flex-direction: column;
}
.f-info__title span:nth-of-type(1){
	color: var(--c-gray--dark);
}

/*===============================
* ボタン
* =================================*/
.f-info__link{
	--arrow-size: .4em;
	--arrow-weight: .125rem;
	display: flex;
	align-items: center;
	gap: 1rem;
	min-width: fit-content;
	padding: 0.5em;
	text-align: center;
	font-size: 1.25rem;
	cursor: pointer;
	transition: opacity var(--ani-t--normal) ease-out;
}
/* アニメーション */
.f-info__link:is(:hover, :focus){
	opacity: .7;
}
/* テキスト */
.f-info__link-text{
	font-weight: var(--fw-lg);
	color: var(--c-dark);
}
/* サークル */
.f-info__link-icon{
	position: relative;
	display: inline-block;
	width: calc( var(--arrow-size) * 3 );
	aspect-ratio: 1;
	background: var(--c-gradient);
	border-radius: 50%;
}
/* 矢印 */
.f-info__link-icon::before{
	position: absolute;
	top: 50%;
	left: 50%;
	content: "";
	display: inline-block;
	width: var(--arrow-size);
	height: var(--arrow-size);
	border-top: var(--arrow-weight) solid var(--c-light);
	border-right: var(--arrow-weight) solid var(--c-light);
	transform: translate(-65%, -50%) rotate(45deg);
}



/*===============================================================================
さない塾
================================================================================*/
.f-about{
	margin-bottom: var(--g-sec--lg);
}
.f-about__inner{
	max-width: var(--width-sm);
	margin-inline: auto;
}
.f-about__head{
	margin-bottom: var(--g-sec--xs);
}
.f-about__title{
	max-width: 15rem;
	width: 43%;
	margin-inline: auto;
}
.f-about__body{
	margin-bottom: var(--g-sec--xs);
	padding: 1.5rem;
	background: rgba(255, 255, 255, 1);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
}
.f-about__special > *{
	display: inline;
}
@media (min-width: 600px){
	.f-about__special > *{
		display: block;
	}
}
.f-about__foot{
	text-align: center;
}



/*===============================================================================
5つの特徴
================================================================================*/
.f-future{
	margin-bottom: var(--g-sec--lg);
}
.f-future__inner{
	max-width: var(--width-sm);
	margin-inline: auto;
}
.f-future__head, 
.f-future__body{
	margin-bottom: var(--g-sec--xs);
}
.f-future__title{
	display: flex;
	justify-content: center;
	align-items: baseline;
}
.f-future__title span{
	-webkit-text-stroke: 5px var(--c-dark);
	text-stroke: 5px var(--c-dark);
	paint-order: stroke;
	font-weight: var(--fw-xl);
	font-size: 4rem;
	color: var(--c-yellow);
}
.f-future-cards{
	--count: 1;
	--gap: .75rem;
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: var(--g-sec--xs) var(--gap);
}
@media (min-width: 768px){
	.f-future-cards{
		--count: 2;
	}
}
@media (min-width: 960px){
	.f-future-cards{
		--count: 3;
	}
}
.f-future-card{
	position: relative;
	max-width: 25rem;
	width: calc( ( 100% - var(--gap) * (var(--count) - 1) ) / var(--count) );
	margin-top: 1rem;
	padding: var(--g-sec--xs) 1rem;
	background: var(--c-light);
	box-shadow: var(--shdw);
}
.f-future-card__icon{
	position: absolute;
	top: -1rem;
	left: 50%;
	transform: translateX(-50%);
	width: 2rem;
}
.f-future-card__image{
	margin-bottom: .5rem;
	border-radius: var(--bd-r--sm);
	overflow: hidden;
}
.f-future-card__image img{
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: 50% 50%;
}
.f-future-card__title{
	text-align: center;
	margin-bottom: .5rem;
}

@media (min-width: 768px){
	.f-future-card__text{
		display: flex;
		flex-wrap: wrap;
	}
}


.f-future__foot{
	text-align: center;
}



/*===============================================================================
こんなお悩みはありませんか？
================================================================================*/
.f-trouble{
	margin-bottom: var(--g-sec--lg);
}
.f-trouble__inner{
	max-width: var(--width-sm);
	margin-inline: auto;
}
.f-trouble__head{
	margin-bottom: var(--g-sec--xs);
}
.f-trouble__title{
	text-align: center;
}
/*===============================
* flex
* =================================*/
.f-trouble__flex{
	--count: 1;
	--gap: 1rem;
	--media-width: 64%;
	--body-width: calc( 200% - var(--media-width) );
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: var(--g-sec--xs) var(--gap);
}
@media (min-width: 768px){
	.f-trouble__flex{
		--count: 2;
	}
}

.f-trouble-list{
	--circle-width: .4em;
	width: calc( ( var(--body-width) - var(--gap) * (var(--count) - 1) ) / var(--count) );
}
.f-trouble-list > li:not(:last-of-type){
	margin-bottom: 1rem;
}
.f-trouble-list > li {
	display: flex;
	align-items: baseline;
	gap: 1rem;
	padding: .8em 1.2em;
	background: var(--c-light);
	border: 1px solid var(--c-navy--dark);
	box-shadow: 4px 4px 0 0 var(--c-blue--light);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
}
/* サークル：グラデーション */
.f-trouble-list__icon {
	position: relative;
	top: var(--over-fz); /* ｱｲｺﾝとﾃｷｽﾄの高さを揃える */
	display: inline-block;
	min-width: var(--circle-width);
	aspect-ratio: 1;
	background: linear-gradient(180deg, #B4DAF2 0%, #8259B5 100%);
	border-radius: 50%;
}
.f-trouble__image{
	max-width: 16rem;
	width: calc( ( var(--media-width) - var(--gap) * (var(--count) - 1) ) / var(--count) );
	margin-inline: auto;
}



/*===============================================================================
そのお悩み、さない塾なら解決できます
================================================================================*/
.f-kaiketu{
	margin-bottom: var(--g-sec--xl);
}
.f-kaiketu__inner{
	max-width: var(--width-sm);
	margin-inline: auto;
}
.f-kaiketu__head{
	margin-bottom: var(--g-sec--xs);
}
.f-kaiketu__title{
	gap: 1rem;
}
.f-kaiketu__title, 
.f-kaiketu__title-text{
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
}
@media (min-width: 768px){
	.f-kaiketu__title, 
	.f-kaiketu__title-text{
		flex-direction: row;
	}
}
.f-kaiketu__title img{
	width: 2.5rem;
}

.f-kaiketu__mv{
	margin-bottom: var(--g-sec--xs);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
}
.f-kaiketu__mv img{
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.f-kaiketu__textArea{
	padding: 1.5rem;
	border-radius: var(--bd-r--sm);
	overflow: hidden;
	background: rgba(255, 255, 255, 1);
}



/*===============================================================================
コース紹介
================================================================================*/
.f-course{
	margin-bottom: var(--g-sec--lg);
}

.f-course-cards{
	--count: 1;
	--gap: 1.25rem;
	display: flex;
	flex-wrap: wrap;
	gap: var(--g-sec--xs) var(--gap);
}
@media (min-width: 960px){
	.f-course-cards{
		--count: 2;
	}
}
@media (min-width: 1140px){
	.f-course-cards{
		--count: 3;
	}
}

/*===============================
* カード
* =================================*/
.f-course-card{
	width: calc( ( 100% - var(--gap) * (var(--count) - 1) ) / var(--count) );
	gap: 1rem;
}
.f-course-card:not(.--illust){
	border: 1px solid var(--c-dark);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
}
.f-course-card.--illust{
	display: flex;
	justify-content: center;
	align-items: center;
}
.f-course-card__illust{
	max-width: 256px;
	width: 60%;
	margin-inline: auto;
}


/*===============================
* タイトル
* =================================*/
.f-course-card__title{
	display: flex;
	align-items: center;
	gap: .8em;
	padding: .8em;
}
.f-course-card__title.--syougakusei{ background: var(--c-syougakusei); }
.f-course-card__title.--chu1{ background: var(--c-chu1); }
.f-course-card__title.--chu2{ background: var(--c-chu2); }
.f-course-card__title.--chu3{ background: var(--c-chu3); }
.f-course-card__title.--koukousei{ background: var(--c-koukousei); }
/* タイトル：黒点 */
.f-course-card__title::before{
	content: "";
	width: .4em;
	min-width: .4em;
	height: .4em;
	background: var(--c-dark);
	border-radius: 50%;
	overflow: hidden;
}

/*===============================
* ボディ
* =================================*/
.f-course-card__body-inner{
	padding: 1.25rem 1rem .5rem;
}
.f-course-card__lead{
	margin-bottom: 1rem;
	padding: .25rem;
	text-align: center;
	border: 1px solid var(--c-gray--dark);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
	font-weight: var(--fw-lg);
}
/*===============================
* リスト
* =================================*/
.f-course-card__list{
	margin-bottom: 1.5rem;
	padding-left: 1rem;
}
.f-course-card__list li:not(:last-of-type){
	margin-bottom: .5rem;
}
/*===============================
* ボタン
* =================================*/
.f-course-card__link{
	--triangle-size: calc(var(--circle-size) / 5.05);
	--triangle-radius: 0%;
	--circle-size: 1.6em;
	--circle-position: 1.5em;
	position: relative;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: .8em;
	text-align: center;
	width: 100%;
	padding: 1rem .5rem;
	background: var(--c-light);
	border: 2px solid var(--c-gray--dark);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
	font-weight: var(--fw-lg);
	font-size: 1.25rem;
	color: var(--c-dark);
	cursor: pointer;
	transition: var(--ani-t--normal) ease-out;
}
/* 〇や＞も同時に色変更可能 */
.f-course-card__link:is(:focus, :hover){
	background: var(--c-gray);
}

/*〇のCSS*/
.f-course-card__link-iconWrap{
	position: relative;
	display: inline-block;
	width: var(--circle-size);
	min-width: var(--circle-size);
	height: var(--circle-size);
	background: var(--c-main);
	border-radius: 50%;
	transition: var(--ani-t--normal) ease-out;
}
.f-course-card__link:is(:focus, :hover) .f-course-card__link-iconWrap{
	transform: rotateY(360deg);
}

/* 三角形 */
.f-course-card__link-icon, 
.f-course-card__link-icon::before,
.f-course-card__link-icon::after{
	width: var(--triangle-size);
	height: var(--triangle-size);
	background: var(--c-light);
	transition: var(--ani-t--normal) ease-out;
}

.f-course-card__link-icon {
	position: absolute;
	top: 50%;
	right: 50%;
	display: flex;
	border-top-left-radius: var(--triangle-radius);
	transform: translate(25%, -85%) rotate(0deg) skewY(30deg) scaleX(.86666);
}

.f-course-card__link-icon::before,
.f-course-card__link-icon::after {
	content: "";
	position: absolute;
}
.f-course-card__link-icon::before {
	border-top-right-radius: var(--triangle-radius);
	transform: skewX(-45deg) translateX(50%);
}
.f-course-card__link-icon::after {
	border-bottom-left-radius: var(--triangle-radius);
	transform: skewY(-45deg) translateY(50%);
}
/*===============================
* アコーディオン化
* =================================*/
@media not all and (min-width: 960px){
	.f-course-card__title{
		position: relative;
		cursor: pointer;
	}
	/* アコーディオンの外枠（ここで高さを制御） */
	.f-course-card__body {
		display: grid;
		grid-template-rows: 0fr; /* 初期状態は高さ0 */
		transition: grid-template-rows 0.4s ease; /* スライドの速度 */
		overflow: hidden;
	}

	/* クラスがついた時に高さを auto（1fr）にする */
	.f-course-card.is-open .f-course-card__body {
		grid-template-rows: 1fr;
	}

	/* 中身が消えたり現れたりする時の透明度設定 */
	.f-course-card__body-inner {
		min-height: 0;
		padding: 0;
		visibility: hidden;
		opacity: 0;
		transition: opacity 0.3s ease, visibility 0.3s;
	}

	.f-course-card.is-open .f-course-card__body-inner {
		visibility: visible;
		opacity: 1;
		padding: 1.25rem 1rem .5rem;
	}
}

/*===============================================================================
生徒・保護者の声
================================================================================*/
.f-voice{
	margin-bottom: var(--g-sec--lg);
}



/*===============================================================================
入塾までの流れ
================================================================================*/
.f-flow{
	margin-bottom: var(--g-sec--lg);
}
.f-flow-cards{
	--count: 1;
	--gap: var(--g-sec--sm);
	display: flex;
	flex-wrap: wrap;
	gap: var(--gap);
}
@media (min-width: 960px){
	.f-flow-cards{
		--count: 4;
	}
}

.f-flow-card{
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: nowrap;
	gap: 1rem 2rem;
	width: calc( ( 100% - var(--gap) * (var(--count) - 1) ) / var(--count) );
	max-width: 40rem;
	margin-inline: auto;
	padding: 1.75rem 1.5rem;
	background: var(--c-light);
	border: 1px solid var(--c-gray--dark);
	border-radius: var(--bd-r--sm);
}
.f-flow-card:not(:last-of-type){
	--icon-c: #DDCDC7;
	--icon-w: 1.25rem;
	--icon-h: 2rem;
	position: relative;
}
@media (min-width: 960px){
	.f-flow-card{
		flex-wrap: wrap;
		padding: 1.75rem .5rem;
	}
	.f-flow-card:not(:last-of-type){
		--icon-w: 1.5rem;
		--icon-h: 1.25rem;
		flex-direction: column;
	}
}
.f-flow-card:not(:last-of-type)::before{
	position: absolute;
	top: calc( 100% + var(--gap) / 2 );
	left: 50%;
	transform: translate(-50%, -50%);
	content: '';
	display: block;
	border-style: solid;
	border-width: var(--icon-h) var(--icon-w) 0 var(--icon-w);
	border-color: var(--icon-c) transparent transparent transparent;
}
@media (min-width: 960px){
	.f-flow-card:not(:last-of-type)::before{
		top: 50%;
		left: calc( 100% + var(--gap) / 2 );
		transform: translate(-50%, -50%);
		border-width: var(--icon-h) 0 var(--icon-h) var(--icon-w);
		border-color: transparent transparent transparent var(--icon-c);
	}
}
.f-flow-card__image{
	width: 18%;
	min-width: 3.5rem;
	margin-inline: auto;
}
@media (min-width: 960px){
	.f-flow-card__image{
		width: 45%;
	}
}
.f-flow-card__text{
	flex-grow: 1;
}
@media (min-width: 960px){
	.f-flow-card__text{
		margin-top: auto;
		text-align: center;
	}
}



/*===============================================================================
まずは1回、体験してみませんか？
================================================================================*/
.f-cta{
	margin-bottom: var(--g-sec--lg);
}



/*===============================================================================
塾長挨拶
================================================================================*/
.f-greeting{
	margin-bottom: var(--g-sec--lg);
}
.f-greeting__head{
	margin-bottom: var(--g-sec--md);
}
.f-greeting__title{
	text-align: center;
}
.f-greeting__lead{
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	margin-bottom: var(--g-sec--xs);
	text-align: center;
}
.f-greeting__flex{
	--count: 1;
	--gap: 1.5rem;
	--media-width: 100%;
	--body-width: calc( 200% - var(--media-width) );
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: var(--gap);
	max-width: var(--width-sm);
	margin-inline: auto;
	padding: 1.5rem;
	background: var(--c-light);
	border-radius: var(--bd-r--sm);
	overflow: hidden;
}
@media (min-width: 960px){
	.f-greeting__flex{
		--media-width: 72%;
		--count: 2;
	}
}
.f-greeting__image{
	width: calc( ( var(--media-width) - var(--gap) * (var(--count) - 1) ) / var(--count) );
	text-align: center;
}
.f-greeting__image img{
	aspect-ratio: 33 / 28;
	object-fit: cover;
	object-position: 50% 0%;
}
@media (min-width: 960px){
	.f-greeting__image img{
		aspect-ratio: auto;
	}
}
.f-greeting__contents{
	width: calc( ( var(--body-width) - var(--gap) * (var(--count) - 1) ) / var(--count) );
}
.f-greeting__name{
	text-align: right;
}



/*===============================================================================
よくある質問
================================================================================*/