.history-concept {
  padding: 0;
}
.history-concept__read {
  font-size: 18px;
  font-weight: 500;
  line-height: 3.1;
  text-align: center;
}
@media screen and (max-width: 767px) {
  .history-concept__read {
    line-height: 2;
  }
}

.history-overview {
  padding: 180px 0 0;
}
@media screen and (max-width: 767px) {
  .history-overview {
    padding: 60px 0 0;
  }
}
.history-overview:nth-child(n+2) {
  padding: 80px 0 0;
}
.history-overview.--last {
  padding: 80px 0 120px;
}
@media screen and (max-width: 767px) {
  .history-overview.--last {
    padding: 60px 0;
  }
}
.history-overview__topWrap {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: start;
      -ms-flex-pack: start;
          justify-content: flex-start;
  margin-bottom: 62px;
}
@media screen and (max-width: 767px) {
  .history-overview__topWrap {
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    margin-bottom: 0;
  }
}
.history-overview__period {
  position: relative;
  width: 245px;
  font-size: 40px;
  font-weight: 700;
}
@media screen and (max-width: 767px) {
  .history-overview__period {
    width: -webkit-fit-content;
    width: -moz-fit-content;
    width: fit-content;
    font-size: 32px;
  }
}
.history-overview__period:after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  margin: auto 0;
  display: block;
  width: 1px;
  height: 83px;
  background-color: #888888;
}
@media screen and (max-width: 767px) {
  .history-overview__period:after {
    right: -90px;
    height: 1px;
    width: 83px;
  }
}
.history-overview__ttl {
  font-size: 26px;
  font-weight: 700;
  color: #005B94;
}
@media screen and (min-width: 768px) {
  .history-overview__ttl {
    padding-left: 40px;
  }
}
@media screen and (max-width: 767px) {
  .history-overview__ttl {
    font-size: 24px;
    width: 100%;
  }
}
.history-overview__cnskWrap {
  width: 445px;
}
@media screen and (max-width: 767px) {
  .history-overview__cnskWrap {
    margin: 20px auto 0;
  }
}
.history-overview__cnskWrap img {
  display: block;
  margin: 0 auto;
}
.history-overview__cnskWrap.--img01 img {
  width: 160px;
}
@media screen and (max-width: 767px) {
  .history-overview__cnskWrap.--img01 img {
    width: 100px;
  }
}
.history-overview__cnskWrap.--img02 img {
  width: 180px;
}
@media screen and (max-width: 767px) {
  .history-overview__cnskWrap.--img02 img {
    width: 120px;
  }
}
.history-overview__cnskWrap.--img03 img {
  width: 144px;
}
@media screen and (max-width: 767px) {
  .history-overview__cnskWrap.--img03 img {
    width: 104px;
  }
}
.history-overview__cnskWrap.--img04 img {
  width: 206px;
}
@media screen and (max-width: 767px) {
  .history-overview__cnskWrap.--img04 img {
    width: 146px;
  }
}
.history-overview__container {
  margin: 64px auto 0;
  width: 100%;
}
@media screen and (max-width: 767px) {
  .history-overview__container {
    margin: 30px auto 0;
  }
}
.history-overview__box {
  position: relative;
  z-index: 2;
}
.history-overview__line {
  position: absolute;
  z-index: -1;
  top: 23px;
  width: 100%;
  left: 0;
  height: calc(100% - 23px);
}
.history-overview__line:after {
  content: "";
  width: 1px;
  height: 100%;
  position: absolute;
  bottom: 0;
  background: #888888;
  left: 10px;
}
.history-overview__wrap {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
@media screen and (max-width: 767px) {
  .history-overview__wrap {
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    margin-left: 20px;
  }
}
.history-overview__contents {
  display: block;
}
.history-overview__year {
  color: #005B94;
  font-size: 54px;
  line-height: 1;
  display: inline-block;
  font-family: "Roboto", sans-serif;
  font-weight: 700;
}
@media screen and (max-width: 767px) {
  .history-overview__year {
    font-size: 32px;
  }
}
.history-overview__year small {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 20px;
}
.history-overview__dl {
  position: relative;
}
@media screen and (min-width: 768px) {
  .history-overview__dl {
    width: 440px;
    margin-left: 46px;
  }
}
@media screen and (max-width: 1279px) and (min-width: 768px) {
  .history-overview__dl {
    width: 340px;
  }
}
.history-overview__dl:nth-child(n+2) {
  margin-top: 38px;
}
@media screen and (max-width: 767px) {
  .history-overview__dl:nth-child(n+2) {
    margin-top: 20px;
  }
}
.history-overview__dl:before {
  content: "";
  position: absolute;
  top: 16px;
  left: -46px;
  display: inline-block;
  border-radius: 50px;
  width: 20px;
  height: 20px;
  background-color: #005B94;
}
@media screen and (max-width: 767px) {
  .history-overview__dl:before {
    width: 16px;
    height: 16px;
    top: 8px;
    left: -19px;
  }
}
.history-overview__dd {
  padding-top: 20px;
}
.history-overview__read {
  margin-left: auto;
}
@media screen and (max-width: 1279px) and (min-width: 768px) {
  .history-overview__read {
    width: calc(100% - 20px);
  }
}
@media screen and (min-width: 768px) {
  .history-overview__read {
    max-width: 485px;
  }
}
@media screen and (max-width: 767px) {
  .history-overview__read {
    margin-top: 20px;
  }
}
.history-overview__boxWrap {
  width: calc(100% - 80px);
  margin-top: 60px;
  margin-left: auto;
  display: -ms-grid;
  display: grid;
  -ms-grid-columns: 1fr 20px 1fr;
  grid-template-columns: repeat(2, 1fr);
  -ms-grid-rows: 1fr;
  grid-template-rows: 1fr;
  gap: 20px;
}
.history-overview__boxWrap > *:nth-child(1) {
  -ms-grid-row: 1;
  -ms-grid-column: 1;
}
.history-overview__boxWrap > *:nth-child(2) {
  -ms-grid-row: 1;
  -ms-grid-column: 3;
}
@media screen and (max-width: 1279px) and (min-width: 768px) {
  .history-overview__boxWrap {
    width: calc(100% - 50px);
  }
}
@media screen and (max-width: 767px) {
  .history-overview__boxWrap {
    width: calc(100% - 20px);
    margin-top: 30px;
    margin-left: 20px;
    -ms-grid-columns: 1fr;
    grid-template-columns: 1fr;
    -ms-grid-rows: (1fr)[1];
    grid-template-rows: repeat(1, 1fr);
  }
  .history-overview__boxWrap > *:nth-child(1) {
    -ms-grid-row: 1;
    -ms-grid-column: 1;
  }
}
.history-overview__boxWrap.--right {
  direction: rtl;
  grid-auto-flow: column;
}
.history-overview__boxWrap.--block {
  gap: 20px;
  -ms-grid-columns: 1fr;
  grid-template-columns: 1fr;
  -ms-grid-rows: 1fr 20px 1fr 20px 1fr;
  grid-template-rows: repeat(3, 1fr);
}
.history-overview__boxWrap.--block > *:nth-child(1) {
  -ms-grid-row: 1;
  -ms-grid-column: 1;
}
.history-overview__boxWrap.--block > *:nth-child(2) {
  -ms-grid-row: 3;
  -ms-grid-column: 1;
}
.history-overview__boxWrap.--block > *:nth-child(3) {
  -ms-grid-row: 5;
  -ms-grid-column: 1;
}
@media screen and (max-width: 1279px) and (min-width: 768px) {
  .history-overview__boxWrap.--block {
    width: calc(100% - 20px);
    max-width: 485px;
  }
}
@media screen and (max-width: 767px) {
  .history-overview__boxWrap.--block {
    margin-left: 0;
    width: 100%;
  }
}
.history-overview__boxWrap.--block02 {
  gap: 20px;
  -ms-grid-columns: 1fr;
  grid-template-columns: 1fr;
  -ms-grid-rows: 1fr 20px 1fr;
  grid-template-rows: repeat(2, 1fr);
}
.history-overview__boxWrap.--block02 > *:nth-child(1) {
  -ms-grid-row: 1;
  -ms-grid-column: 1;
}
.history-overview__boxWrap.--block02 > *:nth-child(2) {
  -ms-grid-row: 3;
  -ms-grid-column: 1;
}
@media screen and (max-width: 1279px) and (min-width: 768px) {
  .history-overview__boxWrap.--block02 {
    max-width: 485px;
    width: calc(100% - 20px);
  }
}
@media screen and (max-width: 767px) {
  .history-overview__boxWrap.--block02 {
    margin-left: 0;
    width: 100%;
  }
}
.history-overview__block {
  display: block;
}
.history-overview__imgWrap {
  margin: 0 auto;
  border-radius: 8px;
  overflow: hidden;
}
.history-overview__text {
  font-weight: 500;
}