@charset "utf-8";

html, body {
	margin: 0;
	/*	height: 100%;*/
	font-family: BlinkMacSystemFont, -apple-system, "Segoe UI", Helvetica, "Hiragino Kaku Gothic ProN", "メイリオ", sans-serif;
	width: 100%;
}


.mobile {
	display: none;
}

@media only screen and (max-width: 480px) {
	.pc {
		display: none;
	}
	.mobile {
		display: block;
	}
}

/*リンク*/
a {
	/*text-decoration:none;*/
	color:#000;
}
a:link {
	color: #000;
}
a:visited {
	color: #000;
}
a:hover {
	color: #888;
}
a:active {
	color: #888;
}

/* ---------- メニュー ---------- */

#menu_container {
	width: 100%;
	height: 66px;
	/*box-shadow: 0 0px 12px rgba(0,0,0,0.15);*/
	border-bottom: 1px solid #333; /*#ccc;*/
	z-index: 3;
	background-color: #fff; /
}

#menu {
	margin-right: 60px;
	margin-top: 9px;
	float: right;
}

#menu_logo img {
	width: 100%;
}

.fixed {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
}

.menu_button {
	float: right;
	margin-left: 60px;
	margin-top: 16px;
	font-size: 12px;
	font-weight: bold;
	color: /#000; /*#333*/

	height: 20px;
}
.menu_button a {
	text-decoration: none;
	color: #000;/*#3D3A39;*/
}
.menu_button a:link {
	color: #000; /*#333*/
}
.menu_button a:visited {
	color: #000; /*#333*/
}
.menu_button a:hover {
	color: #000; /*#333*/
	text-decoration:none;
	filter: alpha(opacity=40);
	-moz-opacity:0.4;
	opacity:0.4;
}

.menu_button a:active {
	color: #000;/*#3D3A39;*/
}

/* カラム落ち対策 */
@media only screen and (max-width: 740px) {
	#header_sns {
		display: none;
	}
}

@media only screen and (max-width: 630px) {
	#menu_container {
		width: 100%;
	}
	#menu {
		width: 90%;
		margin-right: 5%;
		display: flex;
		display: -webkit-flex;
		flex-direction: row-reverse;
		justify-content: space-between;
	}
	.menu_button {
		margin-left: 0;
	}
}

@media only screen and (max-width: 480px) {
	#menu_container {
		height: 40px;
		width: 100%;
	}
	#menu {
		width: 90%;
		margin-top: 0;
		margin-right: 5%;
		display: flex;
		display: -webkit-flex;
		flex-direction: row-reverse;
		justify-content: space-between;
	}
	.menu_button {
		font-size: 10px;
		margin-top: 13px;
		margin-left: 10px;
		margin-right: 10px;
	}
}

/* ---------- ヘッダー ---------- */

#header_container {
	/*	height: 100%;*/
	z-index: -1;
}

#header {
	width: 100%;
	text-align: center;
	position: relative;
}

@media only screen and (min-width: 450px) {
	#header img {
		width: 65%;
		margin-top: 7%;
		margin-bottom: 40px;
		position: absolute;
		top: 50vh;
		left: 50%;
		transform: translate(-50%, -50vh);
	}
}

@media only screen and (max-width: 450px) {
	#header_container {
		/*height: 350px;
		padding-bottom: 30px;
		width: auto;
		margin-right: 20px;*/

	}
	#header {
		width: auto;
		position: static;
		left: 0;
		margin-left: 0;
	}
	#header img {
		/*	margin-top: 70px;*/
		position: static;
		/*padding-left: 10px;*/
		width: 80%;
		left: 10%;
		margin-left: 0;
		margin-top: 30px;
		margin-bottom: 50px;
	}
	#header_logo {
		height: 30px;
		left: 5px;
	}
}

#header_logo img {
	height: 100%;
}
#header_sns {
	z-index: 2;
	float: left;
	/*left: 20px;*/
	padding-left: 50px;
	height: 35px;
	top: 22px;
	position: relative;
}
#header_sns_twitter {
	float: right;
	padding-left: 6px;
	border-left: 0px solid #777;
	height: 100%
}
#header_sns_twitter img {
	height: 100%;
}
#header_sns_facebook {
	float: right;
		border-left: 0px solid #777;
	height: 100%;
	margin-right: 0px;
}
#header_sns_facebook img {
	height: 100%;
}
#header_sns_instagram {
	float: right;
	height: 100%;
	margin-right: 6px;
}
#header_sns_instagram img {
	height: 100%;
}
@media only screen and (max-width: 480px) {
	#footer_sns {
		float: none;
		height: 26px;
		position: relative;
		display: flex;
		display: -webkit-flex;
		justify-content: center;
		margin-bottom: 20px;
		padding-left: 15px;
	}
	#footer_sns_twitter {
		padding-left: 6px;
		border-left: 0px solid #777;
		height: 100%
	}
	#footer_sns_twitter img {
		height: 100%;
	}
	#footer_sns_facebook {
		float: right;
		height: 100%;
		margin-right: 6px;
	}
	#footer_sns_facebook img {
		height: 100%;
	}
	#footer_sns_instagram {
		float: right;
		height: 100%;
		margin-right: 6px;
	}
	#footer_sns_instagram img {
		height: 100%;
	}
}


/* ---------- メインコンテンツ ---------- */

.main_container {
	width: 100%;
}

.intro_img{
	background-image: url("../img/math2.jpg");
	background-repeat: no-repeat;
	background-position: center top;
	background-size: cover;
	vertical-align: top;

}

.intro_img_trans{
	/*background-color: rgba(255,255,255,0.9);*/
	background: -moz-linear-gradient(top, rgba(255,255,255,0.8), #fff);
	background: -webkit-gradient(linear, left top, left bottom, from(rgba(255,255,255,0.8)), to(#fff));
	background: -o-linear-gradient(top, rgba(255,255,255,0.8), #fff);
	background: -ms-linear-gradient(top, rgba(255,255,255,0.8), #fff);
}

.main_content {
	width: 840px;
	position: relative;
	left: 50%;
	margin-left: -420px;
	padding-top: 70px;

}

.content_title {
	font-size: 21px;
	font-weight: bold;
	text-align: left;
	margin-bottom: 30px;
}

.content_title span {
	display: inline-block;
	height: 35px;
	line-height: 35px;
	border-bottom: 1px solid #3D3A39;
}

.flex {
	display: flex;
	display: -webkit-flex;
	flex-direction: row;
}

@media only screen and (max-width: 480px) {
	.main_content {
		width: auto;
		position: static;
		left: 0;
		margin: 0 10px;
		margin-top: 0px;
		text-align: center;
	}
	.content_title {
		font-size: 16px;
		height: 26px;
		margin-bottom: 35px;
		text-align: center;
	}

	.br-pc {
		display:none;
	}

	.br-sp {
		display:block;
	}
	
}

@media screen and (min-width: 480px){
  .br-pc { display:block; }
  .br-sp { display:none; }
}

/* ---------- イントロ ---------- */

#intro {
	/*	height: 500px;*/
}
#intro_1 {
	margin-top: 0px;
	width: 400px;
	position: relative;
	left: 50%;
	margin-left: -200px;
	text-align: center;
	font-size: 18px;
	font-weight: bold;
	letter-spacing: 3px;
	line-height: 180%;
}

/* モバイルレイアウト */

@media only screen and (max-width: 480px) {
	#intro {
		margin-top: 0px;
		/*height: 440px;*/
	}
	#intro_1 {
		width: 100%;
		position: static;
		left: 0;
		font-size: 14px;
		margin-left: 0;
	}
}


#intro_bar {
	height: 30px;
	width: 40px;
	position: relative;
	left: 50%;
	margin-left: -20px;
	border-bottom: 2px solid #3D3A39;
}

#intro_2 {
	width: 700px;
	position: relative;
	left: 50%;
	margin-left: -350px;
	margin-top: 30px;
	font-size: 15px;
	line-height: 218%;
	text-align: center;
}

@media only screen and (max-width: 480px) {
	#intro_2 {
		width: 100%;
		position: static;
		left: 0;
		margin-top: 30px;
		padding: 0 3px;
		font-size: 12px;
		margin-left: 0;
	}
}


/* ---------- 展示写真 ---------- */

#photos {
	display: box;
	display: -webkit-box;
	/*display: -moz-box;*/
	display: -o-box;
	display: -ms-box;
	box-pack: justify;
	-moz-box-pack: justify;
	-webkit-box-pack: justify;
	-o-box-pack: justify;
	-ms-box-pack: justify;
}

/*
#photos {
display: block;
display: -webkit-block;
display: -moz-block;
display: -o-block;
display: -ms-block;
}
*/

.elements {
	width: 275px;
	height: 275px;
	background-color: #fff;/*#3D3A39;*/
	/*display: block;*/
	/*   margin-left: auto;
	margin-right: auto;*/

}

@media only screen and (max-width: 480px) {
	.elements {
		width: 85%;
		height: auto;
		background-color: #fff;/*#3D3A39;*/
		margin: 8px 10%;
	}
}

/* ---------- 開催概要 ---------- */

#summary {
	/*height: 380px;*/
}
#summary_title_rp {
	font-size: 12px;
	height: 10px;
	font-family: "Segoe UI", Helvetica, Arial, 'Hiragino Kaku Gothic ProN', 'ヒラギノ角ゴ ProN W3', Meiryo, メイリオ, sans-serif;
	color: #000;/*#3D3A39;*/
}
#summary_title_jp {
	font-size: 18px;
	font-weight: bold;
	height: 33px;
	margin-bottom: 20px;
}

@media only screen and (max-width: 480px) {
	#summary {
		/*height: 400px;*/
		margin: 0 10px;
	}
	#summary_title_rp {
		height: 15px;
	}
	#summary_title_jp {
		font-size: 18px;
	}
	#summary_title_en {
		height: 60px;
	}
}

.summary_content {
	color: #000;/*#3D3A39;*/
}
.summary_content_1 {
	height: 63px;
	color: #000;/*#3D3A39;*/
}
.summary_content_title {
	float: left;
	clear: left;
	font-size: 14px;
	font-weight: bold;
	line-height: 30px;
	width: 60px;
}
.summary_content_content_1 {
	float: left;
	font-size: 18px;
	line-height: 28px;
	margin-bottom: 4px;
	text-align: left;
}
.summary_content_content_1 span.small {
	font-size: 14px;
	vertical-align: 2px;
}
.summary_content_2 {
	height: 38px;
	color: #000;/*#3D3A39;*/
}
.summary_content_content_2 {
	font-size: 18px;
	line-height: 30px;
	text-align: left;
}
.summary_content_content_3 {
	margin-left: 60px;
	font-size: 14px;
	line-height: 30px;
	color: #000;/*#3D3A39;*/
}
#spon {

}
#spon_1{
	display: none;
}


.booking >a{
	color:indianred !important;
	font-style: bold !important;
}


@media only screen and (max-width: 480px) {
	#period {
		height: 62px;
	}
	#venue {
		height: 35px;
	}
	#organizer {
		height: 48px;
	}
	.summary_content_title {
		font-size: 12px;
		line-height: 20px;
		width: 32px;
		margin: auto 7%;
	}
	.summary_content_content_1 {
		font-size: 12px;
		line-height: 20px;
	}
	.summary_content_content_1 > span.small {
		font-size: 12px;
		line-height: 20px;
	}

	.summary_content_content_2 {
		font-size: 12px;
		line-height: 20px;
	}
	.summary_content_content_3 {
		margin-left: 32px;
		font-size: 12px;
		line-height: 20px;
	}
	#spon {
		display: block;
		font-size: 12px;
		clear: left;
		margin-left: 32px;
	}
	#spon_1{
		display: block;
		font-size: 12px;
		clear: left;
		margin-left: 32px;
	}
}

/* ---------- ゲスト作品 ---------- */

#seer > div:first-child {
	margin-right: 35px;
}

#seer > div > img {
	margin-top: 6px;
	width: 320px;
}

#seer > div h1 {
	margin: 0;
	font-weight: bold;
	font-size: 25px;
	letter-spacing: 2px;
	margin-bottom: 5px;
}

#seer > div h2 {
	margin: 0;
	font-weight: bold;
	font-size: 12px;
	margin-left: 2px;
	letter-spacing: 1.5px;
	margin-bottom: 14px;
}

#seer > div > p {
	font-size: 14px;
	margin-bottom: 33px;
	line-height: 23.5px;
	text-align: left;
}

#seer > div > a#link_to_event {
	text-decoration: none;
	color: #000;/*#3D3A39;*/
	font-size: 14px;
	font-weight: bold;
	border: 2px solid #000;/*#3D3A39;*/
	padding: 10px 22px;
}

#seer > div > a#link_to_event:hover {
	opacity: 0.8;
}
#seer > div h2 {
	margin: 0;
	font-weight: bold;
	font-size: 12px;
	margin-left: 2px;
	letter-spacing: 1.5px;
	margin-bottom: 14px;
}


@media only screen and (max-width: 480px) {
	.flex {
		display: block;
	}
	#seer > div:first-child {
	    margin-right: 0;
	}
	#seer > div > img {
		margin-bottom: 20px;
	}

	#seer div.head {

	}

	#seer div.head > h1 {
		font-size: 20px;
	}

	#seer div.head > h2 {
		line-height: 26px;
		letter-spacing: 2px;
		font-size: 12px;
	}

	#seer > div > p {
		clear: both;
		font-size: 12px;
		width: 100%;
	}

	#seer > div > a#link_to_event {
		display: block;
		position: relative;
		text-align: center;
		color: #000;/*#3D3A39;*/
		font-size: 12px;
		font-weight: bold;
		border: 1px solid #000;/*#3D3A39;*/
		padding: 10px 22px;
	}

	#seer > div > a#link_to_event > img {
		position: absolute;
		top: 12px;
		right: 10px;
	}
}


/* アクセス */

#access_address {
	clear: both;
	padding-top: 30px;
}
#access_address_ {
	float: left;
	font-size: 14px;
	line-height: 30px;
	margin-bottom: 30px;
	margin-right: 30px;
	color: #000;/*#3D3A39;*/
}
.break_s {
	display: none;
}
#googlemap_link {
	float: left;
	width: 125px;
	margin-top: 32px;
	text-align: center;
	text-decoration: none;
	font-size: 12px;
	border-radius: 4px;
	border: 1px solid #000;/*#898989;*/
	background-color: #333;/*#9E9E9F;*/
	color: #FFFFFF;
}

#map_box {
	display: flex;
	display: -webkit-flex;
	justify-content: space-between;
}

#googlemap {
	order:0;
	margin: 4px;
	width: 420px;
	height: 450px;
}

#access_map {
	order:1;
	margin: 4px;
	height: 450px;
}

#access_map img {
	height: 100%;
}

@media only screen and (max-width: 480px) {
	#access{
		margin-left: 0;
	}

	#map_box {
		display: table;
	}
	#googlemap {
		width: 80%;
		margin: 12px 10%;
		height: 350px;
		margin-bottom: 25px;
	}
	#access_address {
		line-height: 20px;
		margin-bottom: 0;
		padding-top: 0;
		font-size: 12px;
		margin-left: 10%;
		text-align: left;

	}
	.break_s {
		display: block;
	}
	#googlemap_link {
		margin-top: 10px;
		margin-bottom: 40px;
	}

	#access_map {
		width: 80%;
		height: 80%;
		margin: 12px 10%;
	}

	#access_map img {
		width: 100%;
	}
}


#access_train {
	clear: left;
	text-align: left;
}
#access_train_title {
	font-size: 16px;
	font-weight: bold;
	margin-bottom: 13px;
}
.access_train_name {
	float: left;
	clear: left;
	width: 230px;
	line-height: 20px;
	margin-right: 30px;
	margin-bottom: 8px;
	font-size: 12px;
	font-weight: bold;
	text-align: center;
	border-radius: 6px;
	border: 1px solid #9E9E9F;
	color: #000;/*#3D3A39;*/
}
.access_train_walk {
	font-size: 14px;
	line-height: 22px;
	margin-bottom: 8px;
	color: #000;/*#3D3A39;*/
}
.access_train_walk_minute {
	font-weight: bold;
	font-size: 15px;
	color: #000;/*#3D3A39;*/
}
#access_caution {
	clear: both;
	padding-top: 30px;
	font-size: 12px;
	line-height: 21px;
	padding-bottom: 80px;
	color: #000;/*#3D3A39;*/
}

@media only screen and (max-width: 480px) {
	#access_train_title {
		font-size: 14px;
	}
	#access_train {
		padding-left: 10%;
	}
	#access_caution {
		padding-bottom: 60px;
		text-align: left;
	}
	.access_train_name {
		font-size: 10px;
		line-height: 18px;
		margin-right: 10px;
		width: 170px;
	}
	.access_train_walk {
		clear: left;
		margin-left: 20px;
		font-size: 12px;
	}
	.access_train_walk_minute {
		font-size: 12px;
	}
	.access_caution {
		width: 100%;
	}
}

/* ---------- フッター ---------- */

#footer_container {
	width: 100%;
	height: 190px;
	background-color: #000;/*#efefef;*/
	clear: both;
	padding-right: 10px;
}
#footer {
	width: 830px;
	margin: 0 auto;
}
#footer_copyright {
	padding-top: 35px;
	padding-bottom: 5px;
	float: right;
	font-size: 12px;
	font-family:Helvetica, Arial, 'Hiragino Kaku Gothic ProN', 'ヒラギノ角ゴ ProN W3', Meiryo, メイリオ, sans-serif;
	color: #fff;/*#3D3A39;*/
	opacity: 0.8; /*0.4*/
}
#footer_bar {
	margin-top: 10px;
	clear: both;
	float: right;
	width: 60px;
	border-top: 1px solid #fff;/*#666666;*/
	margin-bottom: 10px;
}
#footer_logo {
	float: right;
	clear: right;
	width: 240px;
}
#footer_logo img {
	width: 100%;
}

@media only screen and (max-width: 480px) {
	#footer {
		width: 100%;
	}
	#footer_copyright {
		font-size: 10px;
		float: right;
		padding-top: 35px;
	}
	#footer_logo {
		width: 160px;
	}
}