@charset "utf-8";
/* CSS Document */

body{
	margin: 0;
}

.sticky-container{
	margin: 0;
	background-color: #dfeffc;
		background-image: 
		radial-gradient(#ffffff 5%, transparent 5%),
		radial-gradient(#ffffff 5%, transparent 5%);

	  /* 1. ここを大きくすると間隔が広がる */
	  background-size: 60px 60px;

	  /* 2. ここは必ず「sizeの半分」の数値にする */
	  background-position: 0 0, 30px 30px;
}

.sticky-container img{
	display: block;
	line-height: 0;
}

.pc-box{
	display: none;
}

.wrapper{
	width: 100%;
	margin: 0 auto;
	background-color: rgba(255, 255, 255, 0.5);
	padding-bottom: 10%;
}

.mv{
	margin: 0 auto 10%;
}

.mv h1{
	text-align: center;
	font-size: 18px;
	font-weight: normal;
	line-height: 1.8;
	margin: 12% auto;
}

.function{
	width: 80%;
	margin: 5% auto;
	display: flex;
	align-items: center;
	column-gap: 20px;
	border: solid 1px #88BFE4;
	box-sizing: border-box;
	padding: 3%;
	border-radius: 5px;
	background-color: #fff;
}

.function-img{
	width: 35%;
}

.function-img img{
	border-radius: 5px;
}

.function p{
	font-size: 12px;
	line-height: 2;
}

.main-contents{
	margin: 10% auto;
}

.contents-inner{
	margin: 0 auto 25%;
}

.content-number{
	margin: 0 auto 5%;
}

.number-title{
	width: 25%;
	margin: 0 auto;
}

/* 親要素：ここはそのまま */
.number-item {
    position: relative;
    width: 30%;
    margin: 5% auto;
}

/* 1枚目：0秒〜1秒だけ表示する */
.number-item img:first-child {
    position: relative;
    display: block;
    width: 100%;
    height: auto;
    animation: change-shutter1 2s infinite steps(1, end);
}

/* 2枚目：1秒〜2秒だけ表示する */
.number-item__img {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: auto;
    animation: change-shutter2 2s infinite steps(1, end);
}

/* 1枚目用：最初（0%）は見えて、半分（50%）から消える */
@keyframes change-shutter1 {
    0%, 49.9% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

/* 2枚目用：最初（0%）は消えてて、半分（50%）から見える */
@keyframes change-shutter2 {
    0%, 49.9% { opacity: 0; }
    50%, 100% { opacity: 1; }
}

.content-item{
	text-align: center;
    font-size: 20px;
    margin: 0 auto;
	line-height: 1.6;
}

.content-lead{
	text-align: center;
    font-size: 13px;
    line-height: 1.8;
    margin: 10% auto;
}

.item__credit{
	margin: 8% auto;
}

.item__credit p{
	text-align: center;
	font-size: 15px;
	line-height: 1.8;
	font-family: montserrat, sans-serif;
	font-weight: 400;
	font-style: normal;
	margin: 2% auto;
}

.item__credit a{
	display: block;
	width: 30%;
	margin: 1% auto;
	text-align: center;
	background-color: #000;
	color: #fff;
	text-decoration: none;
	font-family: montserrat, sans-serif;
	font-weight: 600;
	font-style: normal;
	font-size: 15px;
	line-height: 2;
}

/* 親要素：画像を重ねる土台 */
.item__style {
    position: relative;
    width: 88%; /* サイズは適宜調整してください */
    margin: 10% 0;
    /* 画像の高さ分を確保する（画像が重なるため） */
}

/* 3枚共通の設定 */
.item__style img {
    width: 100%;
    height: auto;
    position: absolute; /* すべて重ねる */
    top: 0;
    left: 0;
    opacity: 0; /* 最初は全員消しておく */
    animation: fuwa-loop 9s infinite; /* 9秒で1周（1枚3秒） */
}

/* 1枚目：すぐスタート */
.item__style img:nth-child(1) {
    position: relative; /* 1枚目だけrelativeにして親の高さを作る */
    animation-delay: 0s;
}

/* 2枚目：3秒遅らせる */
.item__style img:nth-child(2) {
    animation-delay: 3s;
}

/* 3枚目：6秒遅らせる */
.item__style img:nth-child(3) {
    animation-delay: 6s;
}

/* ふわっと切り替わるアニメーション（3枚用） */
@keyframes fuwa-loop {
    0% { opacity: 0; }
    10% { opacity: 1; }  /* じわっと出る */
    33% { opacity: 1; }  /* 表示をキープ */
    43% { opacity: 0; }  /* じわっと消える */
    100% { opacity: 0; }
}

.item__all{
	width: 80%;
	margin: 15% 0 10% 20%;
}

.content-credit{
	width: 80%;
    margin: 20% auto;
}

.title-border {
    width: 100%;
    margin: 0 auto 5%;
    display: flex;
    align-items: center;
    font-size: 22px;
    letter-spacing: 1px;
    font-family: montserrat, sans-serif;
    font-weight: 400;
    font-style: normal;
}

.title-border:before, .title-border:after {
	border-top: 1px solid;
	content: "";
	flex-grow: 1;
}

.title-border:before {
	margin-right: 1rem;
}

.title-border:after {
	margin-left: 1rem;
}


.credit__inner{
	position: relative;
    border-bottom: solid 1px #808080;
    margin-bottom: 5%;
    letter-spacing: .3px;
	font-family: "Noto Sans", sans-serif;
	font-weight: 300;
	font-optical-sizing: auto;
}

.credit__inner a{
	display: block;
	text-decoration: none;
	color: #000;
	font-size: 14px;
	line-height: 2;
}

.credit__inner a::after {
	content: "BUY";
    position: absolute;
    top: 50%;
    right: 2%;
    transform: translate(0, -50%);
    font-size: 14px;
}


.box{
	margin: 15% auto;
}

.box h2{
	text-align: center;
	font-size: 20px;
	margin: 3% auto;
	font-family: montserrat, sans-serif;
	font-weight: 400;
	font-style: normal;
}

.box ul{
	padding: 0;
	list-style: none;
	display: flex;
	flex-wrap: wrap;
	column-gap: 10px;
	grid-row-gap: 15px;
	justify-content: center;
	width: 90%;
	margin: 5% auto;
}

.box ul li{
	width: calc(50% - 10px);
}

.box ul li p{
	font-size: 10px;
	line-height: 1.6;
	margin: 3% 0;
}


.all{
	display: block;
	width: 80%;
	margin: 2% auto 15%;
	text-align: center;
	background-color: #000;
	color: #fff;
	font-size: 15px;
	text-decoration: none;
	position: relative;
	line-height: 1.6;
	font-family: montserrat, sans-serif;
	font-weight: 600;
	padding: 3% 0;
}

.all:after{
	display: inline-block;
	position: absolute;
	top: 50%;
	right: 15px;
	width: 7px;
	height: 7px;
	border-top: 2px solid #fff;
	border-right: 2px solid #fff;
	content: "";
	transform: translateY(-50%) rotate(45deg);
}

.mbg10{
	margin-bottom: 15%;
}

@media(min-width:750px){
	.sticky-container{
		display: flex;
		justify-content: center;
		background-color: #dfeffc;
	}
	
	.pc-box{
		position: sticky;
		left: 0;
		top: 0;
		display: flex;
		width: 33%;
		height: 100vh;
		justify-content: center;
		align-items: center;
	}
	
	.pc-box__left img{
		width: 42vh;
	}
	
	.pc-box__right{
		width: 24vh;
	}
		
	.wrapper{
		width: 34%;
		margin: 0;
	}
	
.box ul li p{
	font-size: 11px;
	line-height: 1.6;
	margin: 3% 0;
}
}