*, *:before, *:after {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

html { font-size: 18px; }

body {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
	margin: 0;
	padding: 0;
	border: 0;
	background-color: #fffff8;
	color: #111111;
	line-height: 1.4;
	font-weight: normal;
	letter-spacing: normal;
	font-family: ten-oldstyle, toppan-bunkyu-mincho-pr6n, "游明朝", YuMincho, serif;
}

#main {
	width: 90%;
	max-width: 800px;
	margin: 2rem auto;
	padding: 0;
}

a, a:hover, a:visited {
	text-decoration: underline;
	color: #993333;
}

h1 {
	margin-top: 0;
	margin-bottom: 1rem;
	font-size: 2rem;
	font-family: gill-sans-nova, a-otf-midashi-go-mb31-pr6n, sans-serif;
	color: #cc0000;
}

h2 {
	margin-top: 2rem;
	margin-bottom: 1rem;
	font-size: 1.4rem;
	font-family: gill-sans-nova, a-otf-midashi-go-mb31-pr6n, sans-serif;
	color: #cc0000;
}

h3 {
	margin-top: 2rem;
	margin-bottom: 1rem;
	font-size: 1rem;
	line-height: 1.4;
	font-family: gill-sans-nova, a-otf-midashi-go-mb31-pr6n, sans-serif;
}

hr {
	display: block;
	height: 1px;
	border: 0;
	border-top: 2px solid #999999;
	margin: 3rem 0;
	padding: 0;
}

p {
	margin: 1rem 0;
	padding: 0;
	text-align: left;
	vertical-align: baseline;
	text-indent: 2em;
}

p:lang(ja) {
	text-indent: 1em;
}

.no-text-indent, .noindent {
	text-indent: 0;
}

p.displaymath {
	font-size: 1rem;
	text-indent: 0;
	text-align: center;
}

p.displaymath.tag {
	width: 2rem;
	margin: 0;
	text-align: left;
	float: left;
}
p.displaymath.withtag { width: calc(100%-2rem); }

blockquote {
	margin: 1rem 0;
	padding-left: 4rem;
	padding-right: 2rem;
	font-size: 0.95rem;
	line-height: 1.4;
}

ol, ul {
	margin: 1rem 0;
	-webkit-padding-start: 3rem;
}

ul li {
	list-style-type: none!important;
	position: relative;
}
ul li:before {
	content: '\273D';
	position: absolute;
	left: -1rem;
	top: 0.25rem;
	font-size: 0.8rem;
	vertical-align: middle;
}

ul li:not(:first-child), ol li:not(:first-child) { margin-top: 0.25rem; }

ol li.nonumber {
	list-style-type: none!important;
}

ul ul {
	margin: 0;
	-webkit-padding-start: 2rem;
}
ul ul li { margin: 0; }
ul ul li:before { content: ''; }

nav {
	overflow: hidden;
}

nav ul {
	margin: 0;
	-webkit-padding-start: 0;
}
 
nav li {
	float: left;
	margin: 0 1rem 0 0;
	padding: 0;
	font-family: gill-sans-nova, a-otf-midashi-go-mb31-pr6n, sans-serif;
	font-weight: 600;
	color: #666666;
}

nav li:last-child {
	margin: 0;
}

nav li:before {
	content: '';
}
 
nav li a, nav li a:visited {
	text-decoration: none;
	color: inherit;
}

nav li a:hover {
	text-decoration: none;
	color: #cc0000;
}

#subpagelistarea {
	margin: auto 0 0 0;
	padding: 0.1rem 0 2rem 0;
	color: #fff;
	background-color: #444;
}

#subpages {
	width: 90%;
	max-width: 800px;
	margin: 2rem auto;
	padding: 0;
	display: flex;
}

.column { flex: 1; }
.column:not(:first-child) { margin-left: 20px; }

.column h2 {
	margin-top: 1rem;
	margin-bottom: 1rem;
	font-size: 1rem;
	font-family: gill-sans-nova, a-otf-midashi-go-mb31-pr6n, sans-serif;
	color: #fff;
}

.column ol, .column ul {
	margin: 1rem 0;
	-webkit-padding-start: 0;
}

.column ul li {
	font-size: 0.9rem;
}

.column ul li:before {
	content: '';
}

.column a, .column a:hover, .column a:visited {
	text-decoration: underline;
	color: #fff;
}

footer {
	margin: 0 auto;
	padding: 2rem 0;
	position: relative;
	text-align: center;
}

footer p {
	font-size: 0.9rem;
	text-indent: 0;
}

figcaption {
	font-size: 0.8rem;
	text-align: right;
}

div.float_right {
	margin: 0; padding: 0;
	float: right;
}

table {
	margin: 1rem auto;
}

th {
	padding: 0 4px;
	background-color: #c8b0a0;
	font-weight: 600;
}

td {
	padding: 0 4px;
	background-color: #f0e0d0;
}

td.num-center {
	text-align: center;
}

.date {
	font-weight: 700;
}

.with_title_ja, .with_name_ja {
}

.talk {
	font-family: gill-sans-nova, sans-serif;
	font-weight: 600;
	font-style: italic;
	color: #cc0000;
}

.expository {
	font-family: gill-sans-nova, sans-serif;
	font-weight: 600;
	font-style: italic;
	color: #004D4D;
}

/* 小さい画面対応 */

@media (max-width: 800px) {
	html { font-size: 16px; }
	#subpages { flex-direction: column; }
	.column:not(:first-child) { margin-top: 1rem; margin-left: 0; }
}
@media (max-width: 520px) {
}