@charset "utf-8";

/*---------------------------------------
  .main
---------------------------------------*/

.main {
	max-width: 960px;
	margin: 11rem auto 0;
	padding-bottom: 12rem;
	text-align: center;
}

.main h1 {
	margin: 0 0 3.8rem;
	text-align: center;
}

.main h1 span {
	display: block;
}

.main .main-visual {
	margin: 0 0 12rem;
}

.main h2 + p {
	letter-spacing:0.2em;
	padding: 5rem 0 0;
	line-height: 2.5;
}


@media screen and (max-width: 900px) {
.main{
	margin:6.5rem auto 0;
	padding-bottom: 6rem;
}

.main h1 {
	margin: 0 0 2.2rem;
}

.main .main-visual {
	margin: 0 0 4rem;
}

.main h2 + p {
	padding: 2.5rem 0 0;
}

}

@media screen and (max-width: 600px) {
.main{
	margin:60px auto 0;
	padding-bottom: 4rem;
}

.main h2 + p {
	padding: 2.5rem .5rem 0;
	text-align: left;
	line-height: 1.8;
}

}

/*---------------------------------------
  .chapter
---------------------------------------*/
#ch01.chapter {
	background-image: url("../introduction/img/ch1_main_img.jpg");
}
#ch02.chapter {
	background-image: url("../introduction/img/ch2_main_img.jpg");
}
#ch03.chapter {
	background-image: url("../introduction/img/ch3_main_img.jpg");
}

.chapter {
	padding-top: 25%;
	background-position: 50% 0;
	background-repeat: no-repeat;
	background-size: 100% auto;
}

.chapter .inner{
	position:relative;
	max-width: 860px;
	padding-bottom: 12rem;
}

.chapter h2 {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 46.52%;
	min-height: calc(3.6em + 2rem);
	margin-bottom: 1.25rem;
	padding: 1rem;
	background-color: #ffffff;
	font-size: 200%;
	box-sizing: border-box;
}

.chapter .box-wrap {
	position:relative;
	width:100%;
}

.chapter h3{
	font-family: 'Noto Serif JP', serif;
	line-height: 1.0;
	font-size: 160%;
	white-space: nowrap;
	color: #c6c6c6;
}
.chapter h3 img{
	margin:10px 26px 0 4px;
}

.chapter h3.tate {
	display: block;
}

.chapter .box {
	display: flex;
	flex-flow: row nowrap;
	align-items: center;
	justify-content: space-between;
}

.chapter .box .chapter-img{
	width: 46.52%;
	padding: 0 2rem;
	text-align:center;
	box-sizing: border-box;
}

.chapter .box p {
	width: 45.93%;
}

#ch02.chapter h2 {
	margin-left: auto;
}

#ch02.chapter h3.tate {
	right: 0;
}

#ch02.chapter .box {
	flex-flow: row-reverse nowrap;
}

@media screen and (min-width: 1280px) {
.chapter {
	padding-top: 320px;
	background-size: auto;
}
}

@media screen and (max-width: 900px) {
.chapter h2 {
	font-size: 160%;
}

.chapter .inner{
	padding-bottom: 6rem;
}

.chapter .box {
	align-items: flex-start;
}
}

@media screen and (max-width: 600px) {
.chapter {
	padding-top: 20%;
}

.chapter h2 {
	width: 68%;
	margin-left: -1.5rem;
}

#ch02.chapter h2 {
	margin-left: -1.5rem;
}

#ch02.chapter h3.tate {
	right: auto;
	left: 0;
}

.chapter .box {
	display: block;
	padding: 0 0 0 25%;
}

.chapter .box .chapter-img{
	width: 100%;
	margin: 0 0 1.875rem;
	padding: 0;
	text-align: center;
}

#ch03.chapter .box .chapter-img{
	text-align:left;
}

.chapter .box p {
	width: 100%;
}

}



/*---------------------------------------
  .sample
---------------------------------------*/
.sample {
	padding-bottom: 12rem;
}

.sample .inner {
	position: relative;
	max-width: 860px;
	padding: 3.75rem;
	border: 2px solid #1d2c51;
	box-sizing: border-box;
}

.sample .inner h3 {
	position: absolute;
	left: 172px;
	top: -13px;
	transform: translateY(-25%);
}

.sample .inner p {
	max-width: 660px;
	margin: 0 auto;
	text-align: center;
}

.contact-button {
	text-align: center;
}

.contact-button a {
	display: inline-block;
	width:100%;
	max-width: 362px;
	margin: 2rem 0;
	padding:12px 8px;
	border:2px solid #1d2c51;
	background:#fff;
	color:#1d2c51;
	font-weight:bold;
	box-sizing: border-box;
}

@media screen and (max-width: 900px) {
.sample {
	padding-top: 3rem;
}

.sample .inner {
	padding: 3.75rem 2.5rem;
}
}

@media screen and (max-width: 600px) {
.sample .inner {
	padding: 2.5rem;
}

.sample .inner h3 {
	left: 50%;
	top: 0;
	transform: translate(-50% , -50%);
}

.sample .inner p:nth-of-type(1) {
	text-align: left;
}
}