@charset "utf-8";
/* CSS Document */
:root{
	--main-color:#1070bf;
	--sub-color:#ff7761;
	--accolor1:#9766D8;
	--accolor2:#E18026;
	--accolor3:#55B2FF;
	--link-color:#FF618D;
	--base-tx:#0B0B0B;
}
html {
	scroll-behavior: smooth;
}
body {
	font-family: 'Noto Sans JP', "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", Meiryo, sans-serif;
	line-height: 1.6;
	font-size: clamp(0.875rem, 0.816rem + 0.29vw, 1rem);
	color: var(--base-tx);
}
a {
	color: var(--link-color);
}
img {
	max-width: 100%;
	vertical-align: bottom;
}
li{
	text-indent: -1em;
	padding-left: 1em;
	list-style: none;
}
.ng-list li::before{
	content: "・"
}
.note-list li::before{
	content: "※"
}
.os-list li i{
	font-size: 1.2rem;
	color: var(--sub-color);
	margin-right: -0.3rem;
}
button {
	background-color: transparent;
	border: none;
	outline: none;
	-webkit-appearance: none;
	-moz-appearance: none;
	appearance: none;
	cursor: pointer;
	padding: 0;
	font-family: inherit;
	font-size: 100%;
	&:focus-visible {
		outline:2px solid var(--link-color);
	}
}
header{
	height: 300px;
	background: #000;
	position: relative;
	border-top: none;
}
section{
	margin: 4rem 0;
}
h1{
	color: #fff;
	line-height: 1;
	text-align: center;
	font-family: 'Sen', sans-serif;
	font-size: clamp(2.625rem, 2.125rem + 2.5vw, 4rem);
	display: flex;
	flex-direction: column;
	justify-content: center;
	position: absolute;
	inset: 0;
	margin: auto;
}
h1 span {
	font-size: 50%;
	font-family: "Noto Sans JP", sans-serif;
	font-weight: bold;
	line-height: 1.3;
}
h2 {
	padding-bottom: 1rem;
	font-size: 200%;
	letter-spacing: 1px;
	text-align: center;
	font-weight: 800;
	font-family: 'M PLUS 1p', sans-serif;
}
h2::after{
	display: block;
	margin: 0 auto;
	height: 4px;
	background: linear-gradient(to right in oklab, oklch(54% 0.18 240), oklch(67% 0.16 302), oklch(73% 0.2 19));
	content:'';
	vertical-align: top;
	width: 50%;
}
h3 {
	padding-bottom: 1.5rem;
	color: var(--main-color);
	font-size: clamp(1.375rem, 1.239rem + 0.68vw, 1.75rem);
	font-family: 'M PLUS 1p', sans-serif;
}
h4{
	position: relative;
	width: fit-content;
	padding: 0.7rem 1rem;
	border: 2px solid #333333;
	background: #ffffff;
	margin: 2rem auto 1.5rem;
	font-size: 110%;
	color: var(--base-tx);
}
h4::before{
	content: "";
	position: absolute;
	top: 8px;
	left: 8px;
	z-index: -2;
	width: 100%;
	height: 100%;
	box-sizing: border-box;
	border: 2px solid #333333;
	background: var(--sub-color);
}
h4::after{
	content: "";
	position: absolute;
	top: calc(100% + 10px);
	left: 50%;
	z-index: -1;
	width: 20px;
	height: 2px;
	transform: rotate(50deg);
	box-sizing: border-box;
	background: #333333;
	box-shadow: 0 2px 0 #ffffff, 0 -2px 0 #ffffff;
}
main{
	position: relative;
}
.main-nav{
	width: 100%;
	background: linear-gradient(to right in oklab, oklch(54% 0.18 240), oklch(67% 0.16 302), oklch(73% 0.2 19));
	opacity: 0.9;
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
	padding: 0.8rem 0;
	position:sticky;
    top:0;
	z-index: 2;
	transition: transform 250ms ease;
	will-change: backdrop-filter, transform;
	transform: translateZ(0); /* iOSの描画安定化 */
	& ul{
		display: flex;
		flex-wrap: wrap;
		justify-content: space-around;
		gap:1rem;
		margin-bottom: 0;
		& li{
			align-self: center;
			& a{
				text-decoration: none;
				color: #fff;
				padding: 0.3rem;
				font-weight: bold;
			}
		}
	}
}
.contents{
	width: min(90%, 1500px);
	margin: 0 auto;
}
.howto_wrap{
	display: flex;
	margin: 1rem auto 3rem;
	gap:2rem;
}
.howto_ph{
	width: 30%;
}
.howto_ph img{
	max-height: 360px;
}
.howto_tx{
	width: 70%;
}
.box{
	width: 100%;
	text-align: center;
}
.box img{
	max-width: min(100%, 800px);
	max-height: 500px;
	margin: 1rem auto;
}
#registration .box img{
	max-height: 100%;
}
.box_list{
	text-align: left;
	width: 50%;
	margin: 1rem auto;
}
ol {
  counter-reset:number;
  list-style-type: none!important;
}
.box_list li {
  border-bottom: dashed 1px orange;
  position: relative;
  padding: 0.5em 0.5em 0.5em 1.9em;
  line-height: 1.5;
	text-indent: 0;
}
.box_list li:before{
  position: absolute;
  counter-increment: number;
  content: counter(number);
  display:inline-block;
  background: var(--main-color);
  color: #fff;
  font-family: 'M PLUS 1p', sans-serif;
  font-weight:bold;
  border-radius: 50%;
  left: 0;
  width: 1.5rem;
  height: 1.5rem;
  line-height: 1.5;
  text-align: center;
	top: 50%;
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
}
.box_tx{
	width: min(90%, 850px);
	margin: 2rem auto 0;
}
.box_tx p{
	margin-bottom: 0.5rem;
}
.enter-notice{
	padding: 1rem;
	background: #FFF0B2;
	color: var(--base-tx);
}
.qa_box{
	padding: 3rem;
}
/*アコーディオンここから*/
details{
	margin-bottom: 1rem;
}
summary {
	display: block;
	cursor: pointer;
	&::-webkit-details-marker{
		display: none;
	}
}
.summary_inner{
	padding: 0.5rem 1rem;
	background: var(--main-color);
	color: #fff;
	font-weight: bold;
	display: flex;
    justify-content: space-between;
}
.icon{
	align-self: center;
}
.icon::after{
	font: var(--fa-font-solid);
	content: "\f078";
	transition: transform 0.4s;
	width: 1.5rem;
}
details[open] .icon {
	transform: rotate(180deg);
}
.qa-area{
	margin: 1rem 0;
}
.content {
	overflow: hidden;
}
.ans{
	color: var(--sub-color);
	width: 1.5em;
	font-weight: bold;
}
.ans-txt{
	width: calc(100% - 1.5em);
}
.ans-box{
	display: flex;
	padding: 0.5rem 1rem;
	border: solid 2px var(--accolor2);
	margin-top: 0.5rem;
}
/*アコーディオンここまで*/
.notes{
	color: #ff0000;
	text-align: center;
}
.pagetop {
    width: 60px;
    height: 60px;
    position: fixed;
    right: 20px;
    bottom: 20px;
	opacity: 0;
    transition-duration: 0.5s;
    transition-property: opacity, ease;
}
.visible {
	display: block;
	opacity: 1;
}
.pagetop a {
    position: relative;
    display: block;
	border-radius: 50%;
    width: 60px;
    height: 60px;
    text-decoration: none;
    background: #4799dc;
}
.pagetop a::before {
    font: var(--fa-font-solid);
    content: '\f102';
    font-size: 25px;
    color: #fff;
    position: absolute;
    top: 10px;
    bottom: 0;
    right: 0;
    left: 0;
    margin: auto;
    text-align: center;
}
.pagetop a::after {
	position: absolute;
	top: 30px;
	bottom: 0;
	right: 0;
	left: 0;
	margin: auto;
	color: #fff;
	content: 'TOP';
	font-size: 80%;
	text-align: center;
}
.at {
	font-size: 85%;
}
.em{
	font-weight: bold;
}
.number{
	color: var(--accolor1);
	margin-right: 0.2rem;
}
.red{
	color: #fc102e;
}

/*PC用*/
@media screen and (min-width:1024px) {
.sp {
    display: none;
}
}

/*タブレット用*/
@media (768px <= width < 1023px) {
.TL {
    display: none;
}
}

/*スマホ用*/
@media screen and (max-width:767px) {
.PC {
    display: none;
}
header {
	height: 200px;
}
.main-nav.hide {
    transform: translateY(-100%);
  }

h2::after{
	width: 80%;
}
.howto_wrap{
	flex-direction: column;
}
.howto_tx, .howto_ph{
	width: 100%;
}
.box_list{
	width: 80%;
}
.box_list li:before{
	font-size: 110%;
}
.box_tx{
	width: 100%;
	text-align: left;
}
.qa_box{
	padding: 0;
	margin-bottom: 5rem;
}
}

@media (hover: hover) {
  /* リンクの場合 */
a:hover {
	text-decoration: none;	
}
.main-nav ul li:hover{
	background: rgba(255,255,255,0.3);
}
.pagetop a:hover {
	background: var(--link-color);
}
}

@media (prefers-color-scheme: dark){
body{
	color: #fff;
}
}