@charset "utf-8";

:root {
	--mc: #017276;
	--sc1: #775953;
	--sc2: #e5877f;
}


body{
	font-family: "Noto Sans JP", sans-serif;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	font-size: var(--fs-base);
	line-height: 1.4;
	position: relative;
	font-feature-settings: "palt";
	color: #333;
}

header{
	background-image: url("../img/bg_header.jpg");
	background-position: bottom center;
	background-size: auto auto;
	background-repeat: no-repeat;
	overflow: hidden;
}
header .innerBox{
	margin: 0 auto;
	text-align: center;
	display: flex;
	flex-wrap: wrap;
}
header .innerBox > div{
}

.visuallyHidden {
	position: absolute !important;
	width: 1px; 
	height: 0px; 
	padding: 0; 
	margin: -1px; 
	overflow: hidden; 
	clip: rect(0, 0, 0, 0); 
	white-space: nowrap; 
	border: 0;
}

picture{
	display: block;
	width: 100%;
	max-width: 568px;
}
header h1 picture img{
	width: 100%;
	height: auto;
	margin: 0 auto;
}

header h1 + p{
	margin: var(--mrg-s) 0;
}
header h1 + p + p{
	color: var(--sc1);
	font-weight: 500;
	font-size: 1.1em;
}
header ul{
	display: flex;
	flex: 0 0 100%;
	align-content: space-between;
	gap: 9px;
	margin-top: var(--mrg-l);
}
header ul li{
	border: 1px solid var(--mc);
}
header ul img{
	width: 100%;
	height: auto;
}

main section:nth-of-type(odd){
	background: #f4f4e8;
}
.innerBox{
	margin: 0 auto;
	padding: var(--mrg-sec);
}

h2{
	text-align: center;
	margin: 0 auto var(--mrg-m);
	padding: 0;
}
h2 span{
	font-size: var(--fs-tt);
	font-weight: 500;
	text-align: center;
	padding-bottom: 7px;
	display: inline-block;
	position: relative;
}
h2:not(.readArea h2)::after{
	display: block;
	content: "";
	width: 100px;
	height: 5px;
	background: -webkit-linear-gradient(left, rgb(1,114,118) 0%, rgb(145,201,136) 34%, rgb(255,212,87) 60%, rgb(251,162,154) 100%);
	background: -o-linear-gradient(left, rgb(1,114,118) 0%, rgb(145,201,136) 34%, rgb(255,212,87) 60%, rgb(251,162,154) 100%);
	background: linear-gradient(to right, rgb(1,114,118) 0%, rgb(145,201,136) 34%, rgb(255,212,87) 60%, rgb(251,162,154) 100%);
	margin: 0 auto;
}

.readArea h2{
	color: var(--mc);
	font-size: var(--fs-tt);
	font-weight: 500;
	margin-bottom: var(--mrg-s);
}
.readArea p{
	text-align: center;
}

.aBtn a,.bBtn a{
	display: block;
	width: var(--btnW);
	margin: var(--mrg-m) auto 0;
	text-align: center;
	color: #fff;
	text-decoration: none;
	font-size: var(--fs-l);
	padding: 0.5em 0;
	border-radius: 8px;
	font-style: italic;
	transition: 0.3s;
}
.aBtn + .bBtn a,.bBtn + .aBtn a{
	margin: 10px auto ;
}
.aBtn a{
	background: var(--mc);
	border: 1px solid #003335;
}
.bBtn a{
	background: #e5877f;
	border: 1px solid #be3e33;
}
.aBtn a:hover,.bBtn a:hover{
	color: #fff;
	opacity: 0.8;
	transition: 0.3s;
}
.programBox li{
	padding: var(--mrg-m) 0;
}
.programBox li:not(:last-of-type){
	border-bottom: 1px solid #f4f4e8;
}
.programBox li > div:first-of-type img{
	width: 100%;
	height: auto;
	border: 1px solid var(--mc);
	transition: 0.3s;
}
.programBox li > div:first-of-type a:hover img{
	transform: scale(1.02);
	transition: 0.3s;
}
.dateBox{
	color: var(--sc1);
	font-size: var(--fs-l);
	font-weight: 500;
}
.dateTxt span{
	font-size: var(--fs-m);
}
.programBox h3{
	font-size: var(--fs-tt);
	font-weight: 500;
	margin-bottom: 5px;
	font-style: italic;
}
.programBox h3 span{
	display: block;
	font-size: 0.8em;
}
.subtitle{font-weight: 500;}

.castBox{
	margin-top: 0.5em;
}
.castBox::before{
	content: "登壇者:";
	font-size: var(--fs-s);
	display: block;
}
.castBox dt{
	font-weight: normal;
	display: inline;
	margin-right: 10px;
}
.castBox dd{
	font-size: var(--fs-s);
	display: inline;

}
.castBox dd::after{
	content: "";
	display: block;
}

.speakersBox{
	display: flex;
	gap: var(--mrg-m);
	flex-wrap: wrap;
}
.speakersBox li a{
	color: #333;
	text-decoration: none;
}
.speakersBox li a:hover{
	opacity: 0.8;
}
.speakersBox li a .spProf p:first-of-type{
	color: #050175;
	text-decoration: underline;
	font-size: var(--fs-l);
}
.speakersBox li a .spProf p:last-of-type{
	font-size: var(--fs-s);
}
.speakersBox li img{
	width: 100%;
	height: auto;
	border: 1px solid var(--mc);
}
.youtubeArea{
	margin: 0 auto;
}
.youtubeBox{
	max-width: 780px;
	width: 100%;
	aspect-ratio: 16 / 9;
	margin: 0 auto;
	background: #000;
}
.youtubeBox iframe{
	width: 100%;
	height: 100%;
}
.youtubeBox img{
	width: 100%;
	height: auto;
}

.qaBox dt{
	background: var(--mc);
	color: #fff;
	font-weight: normal;
	padding: 10px 20px;
	margin-top: 10px;
	cursor: pointer;
	border-radius: 5px;
}
.qaBox dd{
	display: none;
	font-weight: normal;
	padding: 20px;
}
.qaBox + p{font-weight: normal;}

.bTxt{
	font-weight: 500;
	color: #000;
}

.sTxt{font-size: var(--fs-s);}
.lTxt{font-size: var(--fs-l);}

footer{
	text-align: center;
	font-weight: normal;
	font-size: var(--fs-s);
	padding: 20px;
	background-color: var(--mc);
	color: #fff;
}
a{
	color: #050175;
	text-decoration: underline;
	transition: 0.3s;
}
a:hover{
	color: #0800e6;
	transition: 0.3s;
}
img{
	vertical-align: bottom;
}
.mt15{
	margin-top: 15px;
}

.qaBox dt:last-of-type, .qaBox dd:last-of-type{display: none;}

/* --------------------------------------------------
	PC
-------------------------------------------------- */
@media screen and (min-width:749px){

	:root {
		--fs-base: 18px;
		--fs-r: 30px;
		--fs-tt: 30px;
		--fs-xl: 28px;
		--fs-l: 24px;
		--fs-m: 16px;
		--fs-s: 15px;
		--fs-xs: 14px;
		--btn-fs: 22px;
		--mrg-sec: 70px 0;
		--mrg-xl: 80px;
		--mrg-l: 50px;
		--mrg-m: 30px;
		--mrg-s: 20px;
		--mrg-xs: 15px;
		--btnW: 500px;
	}
	.wrap{
		width: 100%;
		min-width: 1100px;
		overflow-x: hidden;
	}
	.innerBox{
		width: 1100px;
	}
	header{
	}
	header .innerBox{
		width: 1100px;
		margin: 0 auto;
		padding: 60px 0 30px;
	}
	header h1{
		height: auto;
		margin: 0;
		padding: 0;
	}

	.programBox li{
		display: flex;
		gap: 30px;
	}
	.programBox li > div:first-of-type{
		flex: 0 0 380px;
		height: auto;
	}

	.speakersBox li{
		flex: 0 0 calc((100% - (var(--mrg-m) * 3)) / 4);
	}


	.tableBox{
		width: 100%;
		display: table;
		border-left: 1px solid var(--mc);
		border-bottom: 1px solid var(--mc);
		font-weight: normal;
		margin: 0 auto;
		color: var(--mc)
	}
	.tableBox > div{
		display: table-row;
	}
	.tableBox > div > div{
		display: table-cell;
		padding: 15px 20px;
		vertical-align: middle;
		border-top: 1px solid var(--mc);
		border-right: 1px solid  var(--mc);
	}
	.tableBox > div > div:first-of-type{
	}
	.tableBox > div > div:nth-of-type(2){
	}
	.tableBox > div > div:first-of-type{
		text-align: center;
	}

	.pcNone{display: none;}
}

/* --------------------------------------------------
	スマホ
-------------------------------------------------- */
@media screen and (max-width : 748px){

	:root {
		--fs-base: 17px;
		--fs-tt: 24px;
		--fs-xl: 20px;
		--fs-l: 20px;
		--fs-m: 15px;
		--fs-s: 14px;
		--fs-xs: 12px;
		--fs-date: 30px;
		--btn-fs: 4.4vw;
		--mrg-xl: 50px;
		--mrg-l: 30px;
		--mrg-m: 20px;
		--mrg-s: 15px;
		--mrg-xs: 10px;
		--btnW: 100%;
		--br: 20px;
		--br-s: 12px;
	}

	header{
		background-size: cover;
		padding: 0;
	}
	header .innerBox {
		padding: 40px 15px 30px;
	}
	header .innerBox h1{
		display: block;
		width: 100%;
		margin: 0;
	}

	header h1 + p{
		margin: var(--mrg-s) 0;
		color: var(--sc1);
		font-weight: 500;
		font-size: 1em;
	}

	header ul{
		display: flex;
		flex: 0 0 100%;
		align-content: center;
		justify-content:center;
		gap: 5px;
		flex-wrap: wrap;
	}
	header ul li{
		flex: 0 0 calc((100% - (5px * 4)) / 5);
	}


	.innerBox:not(header .innerBox){
		padding: 40px 15px;
	}

	.dateBox{
		margin-top: 5px;
	}
	.speakersBox li{
		flex: 0 0 calc((100% - (var(--mrg-m))) / 2);
	}
	.tableBox{
		border-bottom: 1px solid var(--mc);
		border-left: 1px solid var(--mc);
		color: var(--mc);
	}
	.tableBox > div > div{
		padding: 10px 20px;
		vertical-align: middle;
		border-top: 1px solid var(--mc);
		border-right: 1px solid var(--mc);
	}
	.tableBox > div > div:first-of-type{
		text-align: center;
		background: #fff;
	}

	.smpNone{
		display: none;
	}
}