/*----------
	about history
----------*/
.history-toggle {
	padding: 20px 40px 20px 20px;
	border-top: 1px solid var(--color-border);
	border-bottom: 1px solid var(--color-border);
	position: relative;
	background-color: var(--color-bg);
	cursor: pointer;
	font-weight: bold;
	font-size: 1.3rem;
	line-height: var(--line-height-m);
}
.history-toggle [class^=icon-] {
	display: block;
	width: 16px;
	height: 16px;
	position: absolute;
	right: 20px;
	top: 50%;
	transform: translateY(-50%) rotate(45deg);
	transition: transform 0.2s ease-out;
	font-size: 1.6rem;
	color: var(--color-swril);
}
.history-toggle.is-active [class^=icon-] {
	transform: translateY(-50%) rotate(0);
}
@media (min-width: 768px) {
	.history-toggle {
		padding: 24px 64px 24px 50px;
		font-size: 1.8rem;
	}
}

.history-contents {
	padding-bottom: 90px;
	position: relative;
}
.history-contents::before {
	content: "";
	display: block;
	width: 2px;
	height: 100%;
	position: absolute;
	top: 0;
	left: 50%;
	transform: translateX(-1px);
	background-color: var(--color-swril);
}
.history-contents__title {
	margin-bottom: 40px;
	padding: 20px;
	position: relative;
	z-index: 1;
	background-color: #fff;
	text-align: center;
	font-weight: bold;
	font-size: 4rem;
	line-height: 1;
	color: var(--color-seco);
}
@media (min-width: 768px) {
	.history-contents__title {
		padding: 30px;
		font-size: 5.4rem;
	}
}

.history-item {
	padding: 20px;
	border: 2px solid var(--color-swril);
	border-radius: 10px;
	position: relative;
	z-index: 1;
	background-color: #fff;
}
.history-item::before {
	content: "";
	display: block;
	width: 12px;
	height: 12px;
	border-radius: 50%;
	position: absolute;
	top: -6px;
	left: 50%;
	z-index: 1;
	background-color: var(--color-seco);
	transform: translateX(-50%);
}
.history-item + .history-item {
	margin-top: 24px;
}
.history-item dt {
	margin-bottom: 8px;
	font-weight: bold;
	font-size: 1.3rem;
	line-height: var(--line-height-m);
}
.history-item dd {
	font-size: 1.3rem;
	line-height: var(--line-height-m);
}
@media (min-width: 768px) {
	.history-item {
		width: 462px;
		padding: 34px 40px;
	}
	.history-item::before {
		top: 50%;
		transform: translateY(-50%);
	}
	.history-item::after {
		content: "";
		display: block;
		width: 58px;
		height: 2px;
		position: absolute;
		top: 50%;
		transform: translateY(-1px);
		background-color: var(--color-swril);
	}
	.history-item + .history-item {
		margin-top: -40px;
	}
	.history-item:nth-of-type(odd) {
		margin-left: 0;
		margin-right: auto;
	}
	.history-item:nth-of-type(odd)::before {
		left: auto;
		right: -58px;
	}
	.history-item:nth-of-type(odd)::after {
		right: -58px;
	}
	.history-item:nth-of-type(even) {
		margin-left: auto;
		margin-right: 0;
	}
	.history-item:nth-of-type(even)::before {
		left: -58px;
	}
	.history-item:nth-of-type(even)::after {
		left: -58px;
	}
	.history-item dt {
		font-size: 1.6rem;
	}
	.history-item dd {
		font-size: 1.6rem;
	}
}