.past {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

@media screen and (max-width: 1200px) {
  .past {
    display: block;
  }
}

.past-side {
  max-width: 180px;
  -ms-flex-preferred-size: 180px;
      flex-basis: 180px;
  position: relative;
  padding: 40px 0;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

@media screen and (max-width: 1200px) {
  .past-side {
    max-width: none;
    padding: 40px 60px;
  }
}

@media screen and (max-width: 768px) {
  .past-side {
    padding: 20px;
  }
}

.past-side:after {
  content: "";
  width: 1px;
  height: 100%;
  display: block;
  background-color: black;
  position: absolute;
  bottom: 0;
  right: 0;
}

@media screen and (max-width: 1200px) {
  .past-side:after {
    width: calc(100% - 20px);
    height: 1px;
    right: 10px;
  }
}

@media screen and (max-width: 768px) {
  .past-side:after {
    width: 100%;
    right: 0;
  }
}

.past-side-list {
  width: 90px;
  margin-left: auto;
  position: -webkit-sticky;
  position: sticky;
  top: 120px;
}

@media screen and (max-width: 1200px) {
  .past-side-list {
    width: auto;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
  }
}

.past-side-list li {
  margin: 10px 0;
}

@media screen and (max-width: 1200px) {
  .past-side-list li {
    margin: 0;
    margin-right: 20px;
  }
}

.past-side-list li a {
  font-size: 1.5rem;
  line-height: 2;
  padding-right: 30px;
  display: block;
  position: relative;
  padding: 10px 0;
}

@media screen and (max-width: 768px) {
  .past-side-list li a {
    font-size: 1.4rem;
  }
}

.past-side-list li a.current:before {
  content: "";
  width: 20px;
  height: 1px;
  display: block;
  background-color: black;
  position: absolute;
  right: 0;
  top: 50%;
}

@media screen and (max-width: 1200px) {
  .past-side-list li a.current:before {
    display: none;
  }
}

.past__wrap {
  max-width: calc(100% - 180px);
  -ms-flex-preferred-size: calc(100% - 180px);
      flex-basis: calc(100% - 180px);
}

@media screen and (max-width: 1200px) {
  .past__wrap {
    max-width: none;
  }
}

.past-list__item:last-child:after {
  display: none;
}

.past-list__item a {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

@media screen and (max-width: 992px) {
  .past-list__item a {
    display: block;
  }
}

.past-main, .past-data {
  padding: 60px;
  position: relative;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

@media screen and (max-width: 992px) {
  .past-main:before, .past-main:after, .past-data:before, .past-data:after {
    display: none;
  }
}

@media screen and (max-width: 768px) {
  .past-main, .past-data {
    padding: 20px;
  }
}

.past-main {
  max-width: calc(100% - 300px);
  -ms-flex-preferred-size: calc(100% - 300px);
      flex-basis: calc(100% - 300px);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

@media screen and (max-width: 1200px) {
  .past-main {
    max-width: calc(100% - 250px);
    -ms-flex-preferred-size: calc(100% - 250px);
        flex-basis: calc(100% - 250px);
  }
}

@media screen and (max-width: 992px) {
  .past-main {
    max-width: none;
    margin-bottom: 20px;
  }
}

@media screen and (max-width: 768px) {
  .past-main {
    display: block;
  }
}

.past-main__image {
  max-width: 300px;
  -ms-flex-preferred-size: 300px;
      flex-basis: 300px;
}

@media screen and (max-width: 1200px) {
  .past-main__image {
    max-width: 200px;
    -ms-flex-preferred-size: 200px;
        flex-basis: 200px;
  }
}

@media screen and (max-width: 768px) {
  .past-main__image {
    max-width: none;
    margin-bottom: 20px;
  }
}

.past-main__wrap {
  max-width: calc(100% - 300px - 60px);
  -ms-flex-preferred-size: calc(100% - 300px - 60px);
      flex-basis: calc(100% - 300px - 60px);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

@media screen and (max-width: 1200px) {
  .past-main__wrap {
    max-width: calc(100% - 200px - 40px);
    -ms-flex-preferred-size: calc(100% - 200px - 40px);
        flex-basis: calc(100% - 200px - 40px);
  }
}

@media screen and (max-width: 768px) {
  .past-main__wrap {
    max-width: none;
  }
}

.past-main__title {
  margin-bottom: 30px;
  font-size: 3rem;
  line-height: 1.6;
}

@media screen and (max-width: 1200px) {
  .past-main__title {
    font-size: 2.4rem;
  }
}

@media screen and (max-width: 768px) {
  .past-main__title {
    margin-bottom: 20px;
  }
}

.past-data {
  max-width: 300px;
  -ms-flex-preferred-size: 300px;
      flex-basis: 300px;
  position: relative;
}

@media screen and (max-width: 1200px) {
  .past-data {
    max-width: 250px;
    -ms-flex-preferred-size: 250px;
        flex-basis: 250px;
  }
}

@media screen and (max-width: 992px) {
  .past-data {
    max-width: none;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
  }
}

.past-data:before {
  content: "";
  width: 1px;
  height: 100%;
  display: block;
  background-color: black;
  position: absolute;
  left: 0;
  top: 0;
}

@media screen and (max-width: 992px) {
  .past-data:before {
    width: calc(100% - 20px);
    height: 1px;
    left: 10px;
    background-color: rgba(0, 0, 0, 0.15);
  }
}

.past-data__category {
  min-width: 120px;
  height: 30px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  background-color: white;
  border: 1px solid black;
  font-size: 1.2rem;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

@media screen and (max-width: 576px) {
  .past-data__category {
    margin-bottom: 20px;
  }
}

.past-data__category.exhibition {
  border-color: #f73116;
  color: #f73116;
}

.past-data__category.project {
  border-color: #3e90ec;
  color: #3e90ec;
}

.past-data__category.double {
  border-color: #2ea57f;
  color: #2ea57f;
}

.past-data dl {
  margin-top: 40px;
}

@media screen and (max-width: 992px) {
  .past-data dl {
    margin-top: 0;
    margin-left: 40px;
  }
}

.past-data dt,
.past-data dd {
  margin-bottom: 10px;
  line-height: 1.6;
}

@media screen and (max-width: 992px) {
  .past-data dt,
  .past-data dd {
    margin: 0;
  }
}

.past-data dt {
  font-size: 1.2rem;
  color: rgba(0, 0, 0, 0.5);
}

.past-data dd {
  font-size: 1.4rem;
}

.past-data dd.paid {
  color: #f73116;
}

.past-download {
  height: 160px;
  padding: 0 60px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

@media screen and (max-width: 768px) {
  .past-download {
    height: 180px;
    padding: 0 20px;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    -webkit-box-align: start;
        -ms-flex-align: start;
            align-items: flex-start;
  }
}

.past-download__title {
  font-size: 2.4rem;
  line-height: 1.6;
}

@media screen and (max-width: 768px) {
  .past-download__title {
    font-size: 2rem;
  }
}

@media screen and (max-width: 768px) {
  .past-download__title {
    margin-bottom: 10px;
  }
}