@charset "UTF-8";



/* ------------------------------
	.research
------------------------------ */
.research{
	position: relative;
	padding: 70px 0 160px;
}
.research.bg_gray::before{
	top: auto;
	bottom: 0;
	width: calc(50% + 565px);
	height: calc(100% - 70px);
	max-width: 88%;
}

.research_box{
	position: relative;
	padding: 65px 0;
}

.research_box + .research_box{
	margin-top: 150px;
}

.research_box::before{
	position: absolute;
	top: 0;
	right: 0;
	content: "";
	display: block;
	width: calc(50% + 730px);
	height: 100%;
}
.research_box:nth-child(even)::before{
	left: 0;
	right: auto;
}
.research_box:nth-child(1)::before{
	background: url(../img/research/research_bg01.jpg) no-repeat left center;
	background-size: cover;
}
.research_box:nth-child(2)::before{
	background: url(../img/research/research_bg02.jpg) no-repeat right center;
	background-size: cover;
}
.research_box:nth-child(3)::before{
	background: url(../img/research/research_bg03.jpg) no-repeat left center;
	background-size: cover;
}

.research_box .wrap{
	max-width: 900px;
}

.research_box .ttl_box{
	position: relative;
	display: flex;
	flex-direction: column;
	justify-content: center;
	min-height: 185px;
	margin-bottom: 40px;
}

.research_box .ttl_box .num{
	position: absolute;
	top: -25px;
	left: -175px;
	font-size: 25.0rem;
	font-style: italic;
	font-weight: 500;
	line-height: 1;
	color: #fff;
}
.research_box:nth-child(even) .num{
	left: auto;
	right: -175px;
}

.research_box .ttl{
	font-weight: bold;
	line-height: 1.6;
	color: #fff;
	font-size: 3.0rem;
	text-shadow: 3px 3px 10px rgba(0,0,0, 0.5);
}
.research_box:nth-child(even) .ttl{
	text-align: right;
}

.research_box .en_ttl{
	display: flex;
	align-items: flex-end;
	font-size: 4.3rem;
	min-height: 2.6em;
	line-height: 1.3;
}
.research_box:nth-child(even) .en_ttl{
	justify-content: flex-end;
}

.research_box .jp_ttl{
	display: block;
	margin-top: 15px;
	font-weight: 900;
}

.research_box .txt_box{
	margin-top: 25px;
}

.research_box .txt_box .txt{
	font-size: 1.8rem;
	font-weight: bold;
	color: #fff;
	text-shadow: 1px 1px 3px rgba(0,0,0, 1);
}

.research_box .txt_box .txt + .txt{
	margin-top: 1.5em;
}

.research_box .txt_box .txt.en{
	font-size: 2.0rem;
	font-weight: 500;
	line-height: 1.6;
}


@media screen and (max-width: 768px){
	.research{
		padding: 150px 0 0;
	}

	.research.bg_gray::before{
		width: calc(100% - 30px);
		max-width: 100%;
		height: calc(100% - 150px);
	}

	.research_box{
		position: relative;
		padding: 20px 0 40px;
	}

	.research_box::before{
		width: 100%;
		max-width: 100%;
	}

	.research_box + .research_box{
		margin-top: 60px;
	}

	.research_box .ttl_box .num{
		position: relative;
		top: 0;
		left: 0;
		font-size: 12.0rem;
	}
	.research_box:nth-child(even) .num{
		text-align: right;
		right: 0;
	}

	.research_box .ttl_box{
		margin-bottom: 35px;
	}

	.research_box .ttl{
		font-size: 1.6rem;
	}

	.research_box .en_ttl{
		min-height: 0;
		font-size: 2.5rem;
	}

	.research_box .img{
		margin-left: -4vw;
		margin-right: -4vw;
	}

	.research_box .txt_box{
		margin-top: 30px;
	}

	.research_box .txt_box .txt{
		font-size: 1.2rem;
	}
	.research_box .txt_box .txt + .txt{
		margin-top: 2em;
	}

	.research_box .txt_box .txt.en{
		font-size: 1.4rem;
	}

}