@charset "utf-8";

/* ---------------------------------------- 
 - visual_box
---------------------------------------- */
.visual_box {
	margin: 75px auto;
	width: 100%;
	max-width: 1200px;
	display: flex;
  justify-content: space-between;
}
.visual_box .visual_column:nth-child(1) {
	width: calc(65% - 5px);
}
.visual_box .visual_column:nth-child(2) {
	width: calc(35% - 5px);
}
.visual_box .visual_column:nth-child(1) .visual:nth-child(1) {
	aspect-ratio: 79 / 43.3;
}
.visual_box .visual_column:nth-child(1) .visual:nth-child(2) {
	aspect-ratio: 79 / 36;
}
.visual_box .visual_column:nth-child(2) .visual:nth-child(1) {
	aspect-ratio: 40 / 27;
}
.visual_box .visual_column:nth-child(2) .visual:nth-child(2) {
	aspect-ratio: 40 / 48;
}
.visual_box .visual_column .visual {
	margin-bottom: 10px;
}
.visual_box .visual_column .visual:last-child {
	margin-bottom: 0;
}
.visual_box .visual_column .visual picture,
.visual_box .visual_column .visual img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}
@media screen and (max-width: 768px) {
	.visual_box {
    margin: 45px auto;
  }
}

/* ---------------------------------------- 
 - history
---------------------------------------- */
#history {
  margin: 75px auto;
  padding-top: 75px;
  text-align: center;
  position: relative;
  border-top: solid 1px #aeb7ab;
}
#history .inner {
	width: 94%;
	max-width: 850px;
	margin: 0 auto;
}
#history .inner > .ttl {
	text-align: center;
	margin-bottom: 2.5em;
}
#history .inner > .ttl .en {
	font-size: 4.8rem;
	line-height:1.4;
	color: #53604c;
}
#history .inner > .ttl .jp {
	display: block;
	font-size:1.6rem;
}
.history_box {
	position: relative;
  padding: 10px 0 50px;
}
.history_box::after{
	content: "";
	display: block;
	background: #dfe4d7;
  border-radius: 20px;
	position: absolute;
	top:0;
	left:0;
	right:0;
	width: 20px;
	height: 0;
	margin: auto;
	z-index: 0;
	transition: all 1s 0.5s linear;
}	
.history_box.anime::after{
	height: 100%;
}
.history_box_item {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  margin-bottom: 8%;
}
.history_box_item .visual {
  width: 39%;
  margin-top: -8%;
}
.history_box_item:first-child .visual {
  margin-top: 0;
}
.history_box_item .info {
  position: absolute;
  top: calc(15% - 1em);
  right: 0;
  width: 39%;
  text-align: left;
}
.history_box_item .year {
  font-size:2.8rem;
  line-height: 1;
}
.history_box_item .data {
  display: flex;
  flex-wrap: wrap;
  line-height: 1.8;
  margin-top: 15px;
  background: #dfe4d7;
  padding: 10px 20px;
}
.history_box_item .data dt {
  width: 6em;
}
.history_box_item .data dd {
  width: calc(100% - 6em);
}
.history_box_item .link_btn {
  margin-top: 20px;
}
.history_box_item::before {
  content: "";
  position: absolute;
  top: 15%;
  height: 1px;
  background: #53604c;
  width: 0;
  left: 59%;
  transition: all 0.2s 0.5s linear;
}
.history_box_item.anime::before { /* アニメーション */
  left: 39%;
  width: 20%;
}
.history_box_item::after {
  content: "";
  position: absolute;
  left: 59%;
  top: 15%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #53604c;
  transform: translate(-50%, -50%);
  transition: all 0.1s 0.5s linear;
  opacity: 0;
}
.history_box_item.anime::after { /* アニメーション */
  opacity: 1;
}
.history_box_item:nth-child(even) {
  flex-direction: row-reverse;
}
.history_box_item:nth-child(even) .info {
  left: 0;
  right: auto;
  text-align: right;
}
.history_box_item:nth-child(even) .data {
  text-align: left;
}
.history_box_item:nth-child(even)::before {
  left: 41%;
}
.history_box_item:nth-child(even)::after {
  left: 41%;
}
@media screen and (max-width: 768px) {
  #history {
    margin: 35px auto;
    padding-top: 25px;
  }
  #history .inner > .ttl {
    margin-bottom: 1.5em;
  }
	#history .inner > .ttl .en {
		font-size: 2.8rem;
	}
	#history .inner > .ttl .jp {
		font-size:1.4rem;
	}
  .history_box {
    padding: 5px 0 15px;
  }
  .history_box::after{
    border-radius: 12px;
    width: 12px;
  }
  .history_box_item {
    margin-bottom: 8%;
  }
  .history_box_item .visual {
    width: 40%;
    margin-top: 0;
    z-index: 1;
  }
  .history_box_item:first-child .visual {
    margin-top: 0;
  }
  .history_box_item .info {
    top: calc(15% - 0.7em);
    width: 40%;
  }
  .history_box_item .year {
    font-size: 1.8rem;
  }
  .history_box_item .data {
    margin-top: 10px;
    font-size: clamp(0.9rem, 2vw, 1.5rem);
    letter-spacing: 0;
    line-height: 1.6;
    padding: 5px 3%;
  }
  .history_box_item .data dt {
    width: 5em;
  }
  .history_box_item .data dd {
    width: calc(100% - 5em);
  }
  .history_box_item .link_btn {
    margin-top: 10px;
  }
  .history_box_item .link_btn a {
    font-size: clamp(1.0rem, 1.8vw, 1.5rem);
    padding: 5px 10px;
    min-width: auto;
    letter-spacing: 0;
  }
  .history_box_item .link_btn a::after {
    display: none;
  }
  .history_box_item::before {
    top: 15%;
    left: 37%;
    width: 0;
    left: 57%;
    transition: all 0.2s 0.5s linear;
  }
  .history_box_item.anime::before { /* アニメーション */
    left: 37%;
    width: 20%;
  }
  .history_box_item::after {
    top: 15%;
    left: 57%;
    width: 6px;
    height: 6px;
  }
  .history_box_item:nth-child(even)::before {
    left: 43%;
  }
  .history_box_item:nth-child(even)::after {
    left: 43%;
  }
}