@charset "utf-8";

th {
	background-color: #CCC;
}

h2 {
	padding: 0px 10px;
	margin-top: 10px;
	margin-bottom: 10px;
	border: 3px solid #444;
	box-shadow: 3px 3px #d4d4d4;
	/*影の色とサイズ*/
}

h3 {
	border-left: 10px solid var(--subject-color);
	border-bottom: 1px dashed var(--subject-color);
	margin-top: 20px;
	font-size: 2.0rem;
	padding-left: 10px;
	margin-bottom: 10px;
}

h4:before {
	content: '';
	height: 12px;
	width: 12px;
	display: block;
	position: absolute;
	top: -0px;
	left: 5px;
	transform: rotate(-50deg);
	-webkit-transform: rotate(-50deg);
	-moz-transform: rotate(-50deg);
	-o-transform: rotate(-50deg);
	-ms-transform: rotate(-50deg);
}

h4:after {
	content: '';
	height: 8px;
	width: 6px;
	display: block;
	position: absolute;
	top: 16px;
	left: 2px;
	transform: rotate(-90deg);
	-webkit-transform: rotate(-90deg);
	-moz-transform: rotate(-90deg);
	-o-transform: rotate(-90deg);
	-ms-transform: rotate(-75deg);
}

ul {
	list-style: none;
	padding: 0;
	margin: 0;
}

ins {
	text-align: center;
	/* Googleの広告表示と解答部分の下線が重なるのを解消するため */
	padding-top: 5px !important;
	padding-bottom: 5px !important;
}

/* header */

div.overview {
	margin-bottom: 20px;
	position: relative;
	padding-top: 20px;
	padding-right: 10px;
	padding-left: 10px;
	padding-bottom: 10px;
	border: solid 2px var(--subject-color);
}

div div.title {
	position: absolute;
	top: -19px;
	left: 15px;
	padding: 0 10px;
	background-color: var(--pale-white);
	font-weight: bold;
	font-size: 1.9rem;
}

/* 目次 */
div#toc {
	position: relative;
	margin-top: 20px;
}

div#toc ol.toc-item {
	padding-top: 10px;
}

div#toc ol.toc-item ol li {
	list-style-type: circle;
	margin-left: -1em;
	padding-top: 5px;
}

.button {
	width: 150px;
	height: 40px;
	border: none;
	color: #fff;
	font-size: 13px;
	font-weight: bold;
	text-align: center;
	margin-bottom: 20px;
	border-radius: 10px;
	opacity: 1;
	transition: all 0.3s ease-out;
}

.button:hover {
	cursor: pointer;
	opacity: 0.7;
}

.button:disabled {
	opacity: 0.3;
}

.toc-item>li>ol {
	padding-left: 2rem;
}

.toc-item>li:not(:first-child) {
	margin-top: 1.5rem;
}

@media screen and (min-width: 0px) and (max-width: 700px) {
	h1 {
		font-size: 3.3rem;
		line-height: 3.8rem;
	}
}


h4 {
	position: relative;
	padding-left: 20px;
	margin-top: 20px;
	font-size: 1.8rem;
	line-height: 30px;
}

h5 {
	font-size: 1.5rem;
	margin-top: 15px;
	text-indent: -1em;
	padding-left: 1em;
}

h5:before {
	content: '【';
}

h5:after {
	content: '】';
}

div.contents {
	float: none;
	margin-left: auto;
	margin-right: auto;
}

div.contents>ul {
	padding-left: 1em;
}

div.contents div.gazo img.half {
	width: 150px;
}

div.contents div.gazo img.quarter {
	width: 80px;
}

div.contents div.top {
	padding-left: 1em;
	text-align: left;
}

div.contents div.middle {
	padding-left: 1em;
	text-indent: -1em;
	text-align: left;
}

div.contents div.middle:before {
	content: "→";
}

div.contents div.last {
	padding-left: 1em;
	text-indent: -1em;
	text-align: left;
}

div.contents div.last:before {
	content: "⇒";
}

div.contents div.equal {
	padding-left: 1em;
	text-indent: -1em;
	text-align: left;
}

div.contents div.equal:before {
	content: "＝";
}

div.contents div.hanging {
	padding-left: 1em;
	text-indent: -1em;
}

div.contents div.sup {
	padding-left: 1em;
	text-indent: -1em;
	text-align: left;
}

div.contents div.sup:before {
	content: "◇";
}

div.contents div.lead {
	padding-left: 1em;
	text-indent: -1em;
	text-align: left;
}

div.contents div.lead:before {
	content: "…";
}

div.contents div.equal {
	padding-left: 1em;
	text-indent: -1em;
	text-align: left;
}

div.contents div.equal:before {
	content: "＝";
}

div.contents div.arrow {
	margin-left: auto;
	margin-right: auto;
	text-align: center;
}

div.contents div.arrow:before {
	content: "▼";
}

div.contents div.gazo {
	margin-top: 10px;
	margin-bottom: 20px;
	text-align: center;
}

@media screen and (min-width: 701px) {

	/*小単元の小問を包むブロック*/
	div.contents {
		width: 50%;
		min-width: 660px;
		margin-top: 20px;
		padding-bottom: 5%;
	}

	div.contents div.gazo img {
		width: 300px;
	}

	div.contents div.gazo img.twice {
		width: 600px;
	}
}

@media screen and (min-width: 321px) and (max-width: 700px) {
	div.contents {
		width: 88%;
		padding-top: 5%;
		padding-bottom: 5%;
	}

	div.contents div img {
		width: 280px;
	}

	div.contents div img.twice {
		width: 100%;
	}
}

@media screen and (min-width: 0px) and (max-width: 320px) {
	div.contents {
		width: 88%;
		padding-top: 5%;
		padding-bottom: 5%;
	}

	div.contents div img {
		width: 90%;
		/*画像の最大値*/
	}
}

div.contents img.table {
	width: 100%;
	float: none;
	margin-top: 30px;
	margin-bottom: 30px;
}

.en li,
.circle li {
	padding-left: 1em;
	text-indent: -1em;
}

/*番号①*/

ul.en li:first-child:before {
	content: "\2460";
}

/*番号②*/

ul.en li:first-child+li:before {
	content: "\2461";
}

/*番号③*/

ul.en li:first-child+li+li:before {
	content: "\2462";
}

/*番号④*/

ul.en li:first-child+li+li+li:before {
	content: "\2463";
}

/*番号⑤*/

ul.en li:first-child+li+li+li+li:before {
	content: "\2464";
}

/*番号⑥*/

ul.en li:first-child+li+li+li+li+li:before {
	content: "\2465";
}

/*番号⑦*/

ul.en li:first-child+li+li+li+li+li+li:before {
	content: "\2466";
}

/*番号⑧*/

ul.en li:first-child+li+li+li+li+li+li+li:before {
	content: "\2467";
}

/*番号⑨*/

ul.en li:first-child+li+li+li+li+li+li+li+li:before {
	content: "\2468";
}

/*番号⑩*/

ul.en li:first-child+li+li+li+li+li+li+li+li+li:before {
	content: "\2469";
}

/*番号⑪*/

ul.en li:first-child+li+li+li+li+li+li+li+li+li+li:before {
	content: "\246A";
}

/*番号⑫*/

ul.en li:first-child+li+li+li+li+li+li+li+li+li+li+li:before {
	content: "\246B";
}

/*番号⑬*/

ul.en li:first-child+li+li+li+li+li+li+li+li+li+li+li+li:before {
	content: "\246C";
}

/*番号⑭*/

ul.en li:first-child+li+li+li+li+li+li+li+li+li+li+li+li+li:before {
	content: "\246D";
}

/*番号⑮*/

ul.en li:first-child+li+li+li+li+li+li+li+li+li+li+li+li+li+li:before {
	content: "\246E";
}

/*-------------------------------------*/

/* トップページに「戻る」 */

/*-------------------------------------*/

@media screen and (min-width: 901px) {
	div.contents div.footer {
		text-align: center;
		margin-top: 80px;
	}

	div.contents div.footer img {
		width: 100px;
	}
}

@media screen and (min-width: 501px) and (max-width: 900px) {
	div.contents div.footer {
		text-align: center;
		margin-top: 80px;
	}

	div.contents div.footer img {
		width: 100px;
	}
}

@media screen and (min-width: 0px) and (max-width: 500px) {
	div.contents div.footer {
		text-align: center;
		margin-top: 50px;
		margin-bottom: 50px;
	}

	div.contents div.footer img {
		width: 30%;
	}
}

div.contents span.all {
	color: transparent;
	border-bottom: solid 1px #000;
	padding-left: 1em;
	padding-right: 1em;
	cursor: pointer;
}

div.contents span.true_choice,
span.false_choice {
	padding-left: 1em;
	padding-right: 1em;
	cursor: pointer;
}

div.contents span.choice::before {
	content: "《";
}

div.contents span.choice::after {
	content: "》";
}

.explanation {
	font-size: 1.1rem;
	position: relative;
	background: #ffffff;
	border: 1px solid #000000;
	width: 90%;
	max-width: 300px;
	margin-left: auto;
	margin-right: auto;
	padding: 5px;
	margin-bottom: 30px;
}

.explanation:first-line {
	font-size: 1.5rem;
}

.explanation:after,
.explanation:before {
	bottom: 100%;
	left: 65%;
	border: solid transparent;
	content: " ";
	height: 0;
	width: 0;
	position: absolute;
	pointer-events: none;
}

.explanation:after {
	border-color: rgba(255, 255, 255, 0);
	border-bottom-color: #ffffff;
	border-width: 20px;
	margin-left: -20px;
}

.explanation:before {
	border-color: rgba(0, 0, 0, 0);
	border-bottom-color: #000000;
	border-width: 21px;
	margin-left: -21px;
}

.serif {
	font-size: 1.5rem;
	position: relative;
	background: #ffffff;
	border: 1px solid #000000;
	width: 90%;
	max-width: 300px;
	margin-top: 10px;
	margin-left: auto;
	margin-right: auto;
	padding: 5px 15px 5px 15px;
	border-radius: 20px;
	-webkit-border-radius: 20px;
	/*Safari,Google Chrome用*/
	-moz-border-radius: 20px;
	/*Firefox用*/
}

.serif:after,
.serif:before {
	top: 100%;
	left: 55%;
	border: solid transparent;
	content: " ";
	height: 0;
	width: 0;
	position: absolute;
	pointer-events: none;
}

.serif:after {
	border-color: rgba(255, 255, 255, 0);
	border-top-color: #ffffff;
	border-width: 20px;
	margin-left: -20px;
}

.serif:before {
	border-color: rgba(0, 0, 0, 0);
	border-top-color: #000000;
	border-width: 21px;
	margin-left: -21px;
}

/*２重枠での説明*/

div.double {
	border: double;
	border-radius: 20px;
	-webkit-border-radius: 20px;
	/*Safari,Google Chrome用*/
	-moz-border-radius: 20px;
	/*Firefox用*/
	overflow: hidden;
	padding-right: 1em;
	padding-bottom: 10px;
	padding-top: 10px;
	margin-top: 10px;
	margin-bottom: 30px;
}

div.double div {
	text-align: center;
}

div.double div.top:first-line {
	font-weight: bold;
	display: block;
}

/*黄色まーかー*/

span.marker {
	background: linear-gradient(transparent 60%, #ffff66 60%);
}

div img.border border-1 {
	border: solid 1px;
}

.form-radio-none input[type=radio] {
	display: none;
}

li:has(> input[type="radio"]:checked) {
	border: dashed 2px gray;
}

/* 画像に重ねる文字 */
li:has(> input[type="radio"]:checked)::before {
	font-family: "Font Awesome 6 Free";
	font-weight: bold;
	content: "\f058";
	position: relative;
}

.correct::before {
	font-family: "Font Awesome 6 Free";
	font-weight: 400;
	color: #0000FF;
	content: "\f111";
}

.incorrect::before {
	font-family: "Font Awesome 6 Free";
	font-weight: bold;
	color: #FF0000;
	content: "\f00d";
}

#overlay {
	position: fixed;
	top: 0;
	z-index: 100;
	width: 100%;
	height: 100%;
	display: none;
	background: rgba(0, 0, 0, 0.6);
}

.cv-spinner {
	height: 100%;
	display: flex;
	justify-content: center;
	align-items: center;
}

.spinner {
	width: 40px;
	height: 40px;
	border: 4px #ddd solid;
	border-top: 4px #2e93e6 solid;
	border-radius: 50%;
	animation: sp-anime 0.8s infinite linear;
}

@keyframes sp-anime {
	100% {
		transform: rotate(360deg);
	}
}

.is-hide {
	display: none;
}

dl {
	margin-bottom: 20px
}

.faqs {
	padding-top: 8px;
}

.faqs dt::before {
	font-family: "Font Awesome 6 Free";
	font-weight: bold;
	content: "\51";
	margin-right: 0.7em;
	color: #cc3366;
}

.faqs dt {
	text-indent: -1.5em;
}

.faqs dt ul {
	width: 100%;
}

.faqs dt ul li {
	list-style: decim al;
	display: inline-block;
	width: 40%;
	min-width: 150px;
}

/*番号①*/
.faqs dt ul li:first-child:before {
	content: "\2460";
}

/*番号②*/
.faqs dt ul li:first-child+li:before {
	content: "\2461";
}

/*番号③*/
.faqs dt ul li:first-child+li+li:before {
	content: "\2462";
}

/*番号④*/
.faqs dt ul li:first-child+li+li+li:before {
	content: "\2463";
}

.faqs dt:hover {
	cursor: pointer;
}

.faqs dd::before {
	font-family: "Font Awesome 6 Free";
	font-weight: bold;
	content: "\41";
	margin-right: 0.7em;
	color: #09F;
}

.faqs dd {
	text-indent: -1.5em;
	/* 解答の初期表示を非表示 */
	display: none;
}

.faqs .hover {
	color: #990000;
	text-decoration: underline;
}

/* セレクトリスト */
.select {
	position: relative;
}

.select select {
	appearance: none;
	display: block;
	height: 50px;
	margin: 5px 0px;
	padding: 0px 24px;
	color: #333;
	background-color: #ffffff;
	background-image: none;
	border: 1px solid #cccccc;
	-ms-word-break: normal;
	word-break: normal;
}

label.control-label {
	font-weight: bold;
}


h4:before {
	background: var(--subject-color);
	box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
	-box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
	-webkit-box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
	-moz-box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
}

h4:after {
	background: var(--subject-color);
	box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
	-box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
	-webkit-box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
	-moz-box-shadow: 0 0 5px rgba(255, 255, 255, 0.3) inset;
}

div div.title {
	color: var(--subject-color);
}

div#toc {
	border: dashed 1px var(--subject-color);
	background-color: #fbfbfb;
}

div#toc ol.toc-item>li>a {
	border-bottom: solid 1px var(--subject-color);
}

.button {
	background-color: var(--subject-color);
}

@media screen and (min-width: 500px) {
	.chart {
		width: 400px;
		margin: auto;
		margin-top: 20px;
	}
}

@media screen and (max-width: 499px) {
	.chart {
		width: 300px;
		margin: auto;
		margin-top: 20px;

	}
}

div.iframeWrapper {
	position: relative;
	width: 100%;
	padding-top: 75%;
}

div.iframeWrapper iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

.border-subject-color {
	border-color: var(--subject-color) !important;
}

/* 画像拡大用モーダル */
.modal-wrapper {
	width: 100%;
	height: 100%;
	position: fixed;
	top: 0;
	left: 0;
	background: rgba(0, 0, 0, 0.5);
	pointer-events: none;
	opacity: 0;
	transition: 0.25s ease-out;
	z-index: 2;
}

.modal-wrapper.show {
	opacity: 1;
	pointer-events: all;
}

.modal-image {
	position: absolute;
	max-width: 80%;
	max-height: 80%;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	object-fit: cover;
	opacity: 0;
	transition: 0.5s ease-out;
	background-color: white;
}

.modal-image.show {
	opacity: 1;
}