@charset "UTF-8";

.title_blue_line {
	font-size: 2rem;
	text-align: center;
	line-height: 1.5;
	position: relative;
	margin: 0 0 30px;
}

.title_blue_line::after {
	content: '';
	position: absolute;
	bottom: -10px;
	display: inline-block;
	width: 60px;
	height: 3px;
	left: 50%;
	-webkit-transform: translateX(-50%);
	transform: translateX(-50%);
	background-color: #78b7ed;
	border-radius: 2px;
}

.jiyu_box {
	text-align: center;
}

.jiyu_box .jiyu_img {
	width: 100%;
	max-width: 450px;
	border-radius: 10px;
}

.jiyu_box .os_box {
	max-width: 400px;
	display: flex;
	justify-content: center;
	gap: 30px;
	margin: 0 auto;
}

.jiyu_box .os_box img {
	width: 100%;
	height: 36px;
	object-fit: contain;
}

.youtube_box {
	width: 100%;
	display: grid;
	justify-content: center;
	grid-template-columns: repeat(auto-fit, 290px);
	gap: 30px;
	text-align: center;
	margin: 0 auto;
}

.youtube_box > div {
	border: 1px solid #ccc;
}

.youtube_box > div > p {
	font-weight: bold;
	background: #ddf0fd;
	border-bottom: 1px solid #ccc;
	padding: 10px;
}

.youtube_box div a {
	display: block;
	padding: 10px;
	transition: .3s;
}

.youtube_box div a:hover {
	opacity: 0.3;
}

.youtube_box video {
	width: 100%;
}

.youtube_box > div a div {
	position: relative;
}

.youtube_box > div a div::before {
	content: '';
	display: block;
	position: absolute;
	top: 50%;
	left: 50%;
	width: 50px;
	height: 50px;
	border-radius: 50%;
	background: rgba(90, 90, 90, .8);
	margin: -25px 0 0 -25px;
}

.youtube_box > div a div::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	border-top: 10px solid transparent;
	border-left: 16px solid #fff;
	border-bottom: 10px solid transparent;
	margin: -10px 0 0 -6px;
}


@media screen and (max-width:767px) {

	.pagetop {
		bottom: 65px;
	}

	.jiyu_box .os_box {
		gap: 30px 10px;
	}

	.jiyu_box .os_box img {
		height: 30px;
	}
}