/* CSS Document */
@charset "utf-8";
/*************************
 main
**************************/
body {
  background-color: #000;
}
.sec_concept {
	background-image: url(../../concept/img/concept_top.png);
	background-size: cover;
	background-repeat: no-repeat;
	background-position: 50% 60%;
	padding: 50px 20px;
	/* margin: 0 0 70px; */
	background-color: #000;
	color: #fff;
}
.wrap_800px_concept{
    max-width: 800px;
    margin: auto;
    line-height: 1.85;
}


.sec_concept img.top_logo {
	width: 50px;
	display: block;
	margin: auto;
}


.youtube_box {
	background-color: #1b1b1b;
	padding: 10px 15px 15px;
	margin: 20px 0 20px;
}
.youtube_box .youtube_box_head {
	padding: 0 0 10px;
}
.youtube_box .youtube_box_head img {
	display: block;
	width: 80px;
}
.youtube_box .youtube_box_inner {
	background-color: #fff;
	padding: 10px;
	display: flex;
	align-items: center;
	justify-content: center;
}
.youtube_box .youtube_box_inner p {
	color: #000;
	font-size: 18px;
	font-weight: bold;
}
.youtube_box iframe {
	height: 170px;
}


.conceptTitle {
	position: relative;
	font-size: 1.4em;
	line-height: 100%;
	margin: 15px auto 25px;
	text-align: center;
	padding: 0 0 20px;
}
.conceptTitle span {
	margin-top: 10px;
	font-size: 15px;
	display: inline-block;
	line-height: 100%;
}
.conceptTitle::after {
	content: "";
	position: absolute;
	bottom: 0;
	left: 50%;
	margin-left: -80px;
	width: 160px;
	height: 2px;
	background-color: #fff;
}

.conceptText {
	font-size: 13px;
	padding: 0 15px;
}
.conceptText span{
    font-weight: bold;
    padding: 0 3px;
}

.conceptImg{
    width: 100%;
    margin: 0 0 40px;
}
.conceptImg img {
	display: block;
	width: 100%;
	height: 300px;
	object-fit: cover;
}

.conceptImg_001 {
	margin: 30px 0 0;
}
.conceptImg_001 img {
  display: block;
  width: 100%;
}


.conceptImg_002 {
    display:-ms-flexbox;/*--- IE10 ---*/
    display:-webkit-flex;/*--- safari（PC）用 ---*/
    display:flex;
    -ms-flex-wrap:wrap;/*--- IE10用 ---*/
    -webkit-flex-wrap:wrap;/*--- safari（PC）用 ---*/
    flex-wrap:wrap;
    -webkit-justify-content: space-between; /* Safari */
    justify-content:          space-between;
  	background-color: #000;
  	padding: 10px 0;
}
.conceptImg_002 img {
	display: block;
	height: auto;
	width: 49.9%;
	margin: 0 0px 1px;
}