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

html,
body {
	padding: 0;
	margin: 0;
	position: relative;
	font-family: "Hanken Grotesk", sans-serif;
	background: #fff;
	box-sizing: border-box;
	padding: 0;
}
img {
	max-width: 100%;
	width: 100%;
	border: none;
}
ul,li {
	list-style: none;
	margin: 0;
	padding: 0;
}
a {
	text-decoration: none;
	color: #000;
}
h1,h2,h3,h4,p,a {
	padding: 0;
	margin: 0;
}
.spv {
	display: none;
}
@media only screen and (max-width: 768px)  {
	html,
	body {
		padding:  0;
	}
	.spv {
		display: block;
	}	
	.pcv {
		display: none;
	}	
}


#br {
	position: relative;	
	width: 100vw;
	min-width: 1200px;
	max-width: 1320px;
	margin: 0 auto;
	font-size: 12px;
	letter-spacing: 1px;
	box-sizing: border-box;
	line-height: 2;
	display: grid;
	grid-template-columns: 45% 55%;
	border: 1px solid #000;
	opacity: 1;
		background: #eeeeee;
}
#br::before {
	content: "";
	position: absolute;
	top: 50px;
	left: 45%;
	bottom: 50px;
	width: 1px;
	background: #000;
}
#br .tit {
	position: relative;
	margin: 30px 0;
}
#br .tit h3 {
	width: 100%;
}
#br .tit p {
	font-size: 10px;
	line-height: 2;
	word-break: break-all;
	margin-top: 15px;
/*	box-sizing: border-box;
	position: absolute;
	top: 0%;
	right: 5%;
	transform: translate(0%);
	width: 25%;*/
}
#br .book .tit {
	display: block;
}
#br .book .tit h3 {
	width: 100%;
	margin: 0;
}
#br .book .tit p {
	margin-top: 15px;
	padding: 0;
	width: 100%;
	position: relative;
	right: 0;
}
@media only screen and (max-width: 768px)  {
	#br {
		min-width: 100%;
		display: block;
	}
	#br .tit {
		display: block;
	}
	#br h3 {
		width: 100%;
	}
	#br .tit p {
		margin-top: 15px;
		font-size: 8px;
		line-height: 2;
		padding: 0;
	}
}

#mask path{
fill:none;
stroke:#ffffff;
stroke-width:90;
stroke-dasharray: 18000px;
stroke-dashoffset: 18000px;
animation: line 1.8s 1.8s forwards;
}
@keyframes line{
0%{stroke-dashoffset: 18000px;}
100%{stroke-dashoffset: 0;}
}


#text{
mask: url(#mask-wrapper);
stroke: #000;
}



@media only screen and (max-width: 768px)  {
	#br::before {
		display: none;
	}
}

#side {
	/*width: 40%;*/
	/*height: 100vh;*/
	overflow-y: auto;
	/*position: absolute;*/
	top: 0;
	left: 0;
	box-sizing: border-box;
	padding: 60px;
}

#side .header {
	position: relative;
	
	
}
#side .title {
	border-top:1px solid #000;
	border-bottom:1px solid #000;
	position: relative;
}
/*#side .title h1::before {
	content: "";
	position: absolute;
	top: 5px;
	right: 0;
	bottom: 5px;
	width: 1px;
	background: #000;
}*/
#side .title h1 {
	width: 25%;
	box-sizing: border-box;
	padding: 15px 5%;
	line-height: 0;
	position: relative;
}
#side .title h2 {
	position: absolute;
	top: 50%;
	left: 40%;
	transform: translate(0,-50%);
	width: 55%;
	line-height: 0;
}
#side .data {
	position: relative;
}
#side .data .update {
	text-align: right;
	margin: 15px 0;
	font-size: 12px;
}
#side .data .concept {
	font-size: 10px;
	line-height: 2;
	word-break: break-all;
}
#side .book {
	position: relative;
	margin: 50px auto 0;
	padding: 0;
	border-top:2px solid #000;
	filter: grayscale(1)
	
}
#side .book .swiper-slide {
	width: 100%;
	height: auto;
}
#side .book .swiper-slide img {
	box-sizing: border-box;
	border: 0.5px solid #fff;
	box-shadow: 1px 2px 4px 0px rgb(0 0 0 / 0.1);
}
#side .book .slide-large {
  width: 59.4%;
}

#side .book .slide-small {
  width: 15%;
}
#side .book .swiper-sb {
	margin-top: 3%;
}

@media only screen and (max-width: 768px)  {
	#side {
		width: 100%;
		position: relative;
		top: auto;
		left: auto;
		box-sizing: border-box;
		padding:50px 20px;
		height: auto;
		
	}
	#side .title h2 {
		left: 36%;
		width: 58%;
	}
	#side .data .update {
		font-size: 12px;
	}
	#side .data .concept {
		font-size: 8px;
	}
	#side .book {
		padding: 0;
		border-bottom: none;

	}
	#side .book .slide-large {
	  width: 63.5%;
	}

	#side .book .slide-small {
	  width: 16%;
	}
}




#center {
	position: relative;
/*	width: calc(100% - 500px);
	margin-left: 500px;*/
/*	width: 60%;
	margin-left: 40%;*/
	box-sizing: border-box;
	padding: 60px;
	width: 100%;
	margin-left: 0;
}
@media only screen and (max-width: 768px)  {
	#center {
		position: relative;
		width: 100%;
		margin-left: 0;
		padding: 0px 20px;
	}
	
}


#center .visual {
	position: relative;
	width: 100%;
	box-sizing: border-box;
	border-top: 1px solid #000;
	margin-bottom: 50px;
}
#center .visual .bg {
	width: 100%;
	height: 500px;
	background: url(https://www.dot-st.com/static/docs/brill/keyvisual/images/br_main_260218_look.jpg) no-repeat top;
	background-size: cover;
}
#center .feature {
	position: relative;
	width: 100%;
	box-sizing: border-box;
	border-top: 2px solid #000;
	margin-bottom: 50px;
}

#center .feature ul {
	display: grid;
	grid-template-columns: 1fr 1fr 1fr;
	grid-gap:25px;

}
#center .feature ul li {
	line-height: 0;
}
#center .feature .swiper {
 height: 200vw;
  width: 100%;
}




  .gallery li {
    width: 100%;
    height: auto;
    display: none;
  }

  .gallery li.show {
    display: block;
  }
  .gallery li img {
	box-sizing: border-box;
	border: 0.5px solid #fff;
	box-shadow: 1px 2px 4px 0px rgb(0 0 0 / 0.1);
}
  #viewMoreBtn {
	display: block;
	background: #fff;
	color: #000;
	text-align: center;
	padding: 15px 0;
	  margin: 5% auto 0;
	  font-size: 10px;
	  cursor: pointer;
	  
  }
@media only screen and (max-width: 768px)  {
	#center .feature ul {
		display: grid;
		grid-template-columns: 1fr 1fr 1fr;
		grid-gap: 15px;

	}	
}



#center .youtube {
	position: relative;
		border-top:2px solid #000;

}
#center .youtube .btn a {
	display: block;
	background: #fff;
	color: #000;
	text-align: center;
	padding: 15px 0;
	font-size: 10px;
	cursor: pointer;
}
#center .yt_list {
	position: relative;
	margin: 5% auto;
}
  .sidebar {
    width: 40%;
	  height: 100%;
    overflow-y: auto;
	  position: absolute;
	  top: 0;
	  left: 0;
	  
  }
.index {
    padding: 15px 0;
    border-bottom: 1px solid #ccc;
	border-top: 1px dotted #ccc;
}
  .item {
    padding: 15px 50px 15px 0;
    border-bottom: 1px dotted #ccc;
    cursor: pointer;
	  position: relative;
	  font-size: 10px;

  }
.item::before {
	content: "";
	position: absolute;
	top: 50%;
	right: 2%;
	transform: translate(0,-50%);
	background: url("../img/play.svg") no-repeat;
	background-size: 20px;
	width: 20px;
	height: 20px;
	
}

  .item:hover {
    background: #ccc;
  }

  .player {
    width: 55%;
	  margin-left: 45%;
	  padding: 10% 2%;
	  box-sizing: border-box;
	  border-top: 1px dotted #ccc;
	  border-bottom: 1px dotted #ccc;
  }
  .player .video {
	aspect-ratio: 16 / 9;
	  line-height: 0;
  }
  iframe {
    width: 100%;
    height: 100%;
  }

@media only screen and (max-width: 768px)  {
	.index {
		border-top: none;
		padding: 25px 0 15px;
	}
	.sidebar {
		width: 100%;
		  height: auto;
		  position: relative;
		  top:auto;
		  left: auto;

	  }
	  .player {
		width: 100%;
		  margin-left: 0%;
		  padding: 0;
		  position: sticky;
		  top: 0;
		  z-index: 10;
		  border: none;
	  }
}
.icon  {
	margin: 75px auto;
}
.icon ul {
	display: grid;
	grid-template-columns: 1fr 1fr 1fr;
	position: relative;
	border-bottom: 1px solid #000;
	border-top: 1px solid #000;
}
.icon ul::before {
	content: "";
	position: absolute;
	top: 50%;
	left: 0;
	transform: translate(0,-50%);
	width: 100%;
	height: 1px;
	background: #000;
}
.icon ul li {
	padding: 35px 0;
	position: relative;
	text-align: center;
	line-height: 1;
}
.icon ul li a {
	color: #000;
	text-align: center;
	font-size: 10px;
}
.icon ul li img {
	max-width: 50px;
	margin: 15px auto;
	display: block;
}
.icon li::before {
	content: "";
	position: absolute;
	top: 0%;
	right: 0;
	width: 1px;
	height: 100%;
	background: #000;
}
.icon li:nth-of-type(3)::before, .icon li:nth-of-type(6)::before {
	display: none;
}
.icon .logo {
	width: 100%;
	margin: 75px auto;
	line-height: 0;
}
.icon .copyright {
	border-top: 1px solid #000;
	border-bottom: 1px solid #000;
	font-size: 10px;
	padding: 25px 0;
}