@charset "utf-8";
/* CSS Document */
.artec_logo {
	margin-bottom: 10px;
	margin-top: 15px;
}
/*ナビ背景*/
.naviback {
	background-color: #004097;
	width: 100%;
}
/*ナビ基本*/
li.pill a {
	background-color: #004097;
	color: #ffffff;
	border-radius: 0px;
	font-size: 18px;
	padding-top: 12px;
	padding-bottom: 8px;
}
/*ナビアクティブ時*/
.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
	color: #ffffff;
	background-color: #001f66;
	border-radius: 0px;
}
/*ナビホバー時*/
.pill a:hover, .pill a:focus {
	color: #ffffff;
	background-color: #001f66 !important;
}
/*ここまで*/

.sub_title {
	font-size: 28px;
	color: #262626;
	margin-bottom: 5px;
}
.main_title {
	font-size: 40px;
	font-weight: 600;
	color: #004098;
	line-height: 54px;
	margin-bottom: 15px;
}
.category_title {
	color: #004098;
	font-size: 36px;
	margin-top: 60px;
}
.tangen_title {
	color: white;
	background-color:black;
	font-size: 22px;
	margin-top: 80px;
	margin-bottom: 20px;
	padding-top: 5px;
	padding-bottom: 4px;
}


.tangen_name {
	font-size: 24px;
}

.description {
	font-size: 18px;
	margin-bottom: 20px;
	margin-top: 5px;
}
.worksheet_no {
	font-size: 18px;
	color: #999999;
	margin-top: 30px;
}
.worksheet_title {
	font-size: 20px;
	color: #004098;
	margin-bottom: 5px;
	height: 2.8em;
	line-height: 1.4em;
	/*border: 1px solid #ccc;*/
}

.cover {
	display: inline-block;
}


.return_btn {
	font-size: 24px;
	margin-top: 60px;
	margin-bottom: 10px;
}
footer {
	background-color: black;
	padding-top: 30px;
	padding-bottom: 15px;
	margin-top: 75px;
	color: white;
}
.companyname {
	font-size: 16px;
}
.copyright {
	font-size: 14px;
}

.link-button a {
	display: block;
	text-decoration: none;
	color: #ffffff;
	font-size: 14px;
	line-height: 3.6em;
	border-radius: 2px;
	width: 280px;
	margin-top: 1em;
	margin-left: auto;
	margin-right: auto;
	background-color: #003399;
}
.link-button_manual a {
	display: block;
	text-decoration: none;
	color: #ffffff;
	font-size: 14px;
	line-height: 3.6em;
	border-radius: 2px;
	width: 280px;
	margin-top: 1em;
	margin-left: auto;
	margin-right: auto;
	background-color: #001f66;
}
.link-button .link-button_manual, a:hover {
	text-decoration: none;
	color: white;
	opacity: 0.5;
	-moz-opacity: 0.5;
	filter: alpha(opacity = 50);
}

.tangen_btn{
	color: #0066cc;
	font-size: 22px;
	margin-top: 10px;
	margin-bottom: -30px;
}

.tangen_btn, a:hover{
	color: black;
}


@media screen and (max-width: 640px) {
.link-button a {
	width: 210px;
	font-size: 12px;
}
.link-button_manual a {
	width: 210px;
	font-size: 12px;
}
.worksheet_title {
	font-size: 16px;
}

}
/* ページトップへ戻るボタン */
#page-top{
	position:fixed;
	display:none;
	width:100%;
	height: 0;
	bottom: 180px;
	z-index:2;
	margin: auto;
}

#page-top a{
	position:absolute;
	display:block;
	right: 40px;
	width:60px;
	height:80px;
	background-size: 60px 80px;
	-moz-background-size: 60px 80px;
	background-image:url('../images/top_btn.png');
	background-repeat: no-repeat;
	/*bottom:-180px;*/
}
#page-top a:hover{
	opacity:0.5;
}

@media only screen and (max-width: 480px)　{
	#page-top {
	display:none;
	}
}

.release_date {
	color: #444444;
	font-size: 30px;
	margin-top: 140px;
}