.history__title {
  margin-bottom: 1.3125em;
}
@media (max-width: 768px) {
  .history__container {
    padding: 0 1.25em;
  }
}
.history__intro {
  padding-top: 5.625em;
  position: relative;
  z-index: 0;
  margin-bottom: 5em;
}
@media (max-width: 768px) {
  .history__intro {
    padding-top: 2.5em;
    margin-bottom: 3.75em;
  }
}
.history__intro::before {
  content: "";
  display: block;
  width: 24.1667vw;
  height: 24.1667vw;
  background: url(../img/company/history_intro_logo.svg) no-repeat center center/cover;
  position: absolute;
  top: 0;
  left: 50%;
  z-index: -1;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
}
@media (max-width: 768px) {
  .history__intro::before {
    width: 75vw;
    height: 75vw;
  }
}
.history__intro-catch {
  font-family: "Noto Serif JP", serif;
  font-size: 3em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 2em;
}
@media (max-width: 768px) {
  .history__intro-catch {
    font-size: 1.75em;
    margin-bottom: 1.25em;
  }
}
.history__intro-text {
  max-width: 960px;
  margin: 0 auto 5em;
}
@media (max-width: 768px) {
  .history__intro-text {
    font-size: 0.875em;
    margin: 0 auto 2.5em;
  }
}
.history__timeline {
  position: relative;
  z-index: 0;
}
.history__timeline::before {
  content: "";
  display: block;
  width: 6px;
  height: calc(100% - 100px);
  background-color: #ffffff;
  border-radius: 3px;
  position: absolute;
  top: 100px;
  left: 50%;
  z-index: -1;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
}
@media (max-width: 768px) {
  .history__timeline::before {
    width: 4px;
    height: calc(100% - 60px);
    top: 60px;
    left: 0;
    -webkit-transform: none;
            transform: none;
  }
}
.history__timeline-progress {
  position: absolute;
  top: 100px;
  left: 50%;
  z-index: -1;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
  width: 6px;
  height: 0;
  background-color: #1B2F6C;
  border-radius: 3px;
  will-change: height;
}
@media (max-width: 768px) {
  .history__timeline-progress {
    width: 4px;
    top: 34px;
    left: 0;
    -webkit-transform: none;
            transform: none;
  }
}
@media (max-width: 768px) {
  .history__timeline-progress::after {
    content: "";
    position: absolute;
    bottom: -20px;
    left: 50%;
    -webkit-transform: translateX(-50%);
            transform: translateX(-50%);
    width: 16px;
    height: 40px;
    border-radius: 50%;
    background: -webkit-radial-gradient(center, ellipse, rgba(27, 47, 108, 0.55) 0%, rgba(27, 47, 108, 0) 70%);
    background: radial-gradient(ellipse at center, rgba(27, 47, 108, 0.55) 0%, rgba(27, 47, 108, 0) 70%);
    -webkit-filter: blur(4px);
            filter: blur(4px);
    pointer-events: none;
  }
}
@media (max-width: 768px) {
  .history__item {
    padding-left: 1.5em;
  }
}
.history__item:nth-child(odd) .history__item-gallery-list {
  -webkit-box-pack: end;
  -webkit-justify-content: flex-end;
      -ms-flex-pack: end;
          justify-content: flex-end;
}
@media (max-width: 768px) {
  .history__item:nth-child(odd) .history__item-gallery-list {
    -webkit-box-pack: start;
    -webkit-justify-content: flex-start;
        -ms-flex-pack: start;
            justify-content: flex-start;
  }
}
.history__item + .history__item {
  margin-top: 5em;
}
@media (max-width: 768px) {
  .history__item + .history__item {
    margin-top: 2.5em;
  }
}
.history__item-year {
  font-family: "Noto Serif JP", serif;
  font-size: 7.5em;
  font-weight: bold;
  color: #1B2F6C;
  text-align: center;
  line-height: 1.433;
  margin-bottom: 22px;
}
@media (max-width: 768px) {
  .history__item-year {
    font-size: 2.5em;
    text-align: left;
    margin-bottom: 10px;
  }
}
.history__item-year span {
  display: inline-block;
  background-color: #F8F8F8;
}
.history__item-contents {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
      -ms-flex-pack: justify;
          justify-content: space-between;
  margin-bottom: 5.625em;
}
@media (max-width: 768px) {
  .history__item-contents {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
        -ms-flex-direction: column;
            flex-direction: column;
    margin-bottom: 2.5em;
  }
}
.history__item-title {
  width: 45%;
  font-size: 2em;
  font-family: "Noto Serif JP", serif;
  font-weight: bold;
  text-align: right;
}
@media (max-width: 768px) {
  .history__item-title {
    width: 100%;
    text-align: left;
    font-size: 1.375em;
    line-height: 1.5;
    margin-bottom: 0.25em;
  }
}
.history__item-text {
  width: 45%;
  line-height: 2;
}
@media (max-width: 768px) {
  .history__item-text {
    width: 100%;
    font-size: 0.875em;
  }
}
.history__item-gallery {
  overflow: scroll;
  padding-bottom: 10px;
}
.history__item-gallery-list {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  gap: 2.5em;
}
@media (max-width: 768px) {
  .history__item-gallery-list {
    gap: 1.25em;
    -webkit-box-pack: start;
    -webkit-justify-content: flex-start;
        -ms-flex-pack: start;
            justify-content: flex-start;
  }
}
.history__item-gallery-item {
  width: 30%;
  background-color: #ffffff;
  padding: 10px;
  border: 1px solid #EBEBEB;
  border-radius: 5px;
}
@media (max-width: 768px) {
  .history__item-gallery-item {
    width: 250px;
    min-width: 250px;
  }
}
.history__item-gallery-item-image {
  margin-bottom: 15px;
}
.history__item-gallery-item-image img {
  border-radius: 5px;
}
.history__item-gallery-item-title {
  text-align: center;
  line-height: 2;
  margin-bottom: 5px;
}
@media (max-width: 768px) {
  .history__item-gallery-item-title {
    font-size: 0.875em;
    line-height: 1.5;
  }
}