.p-ost {
  padding: 114px 0 0;
  position: relative;
  z-index: 1;
}
@media screen and (max-width: 899px) {
  .p-ost {
    padding: 74px 0 0;
  }
}

.is-in .p-ost__title {
  margin: 0 auto 84px;
}
@media screen and (max-width: 899px) {
  .is-in .p-ost__title {
    margin: 0 auto 41px;
  }
}
.p-ost__title-text .p-in-title {
  text-align: left;
}
.p-ost__contents {
  width: 65.8%;
  max-width: 1200px;
  margin: 0 auto;
  transform: translateY(8px);
  opacity: 0;
  transition: transform 0.8s var(--ease-main) 0.3s, opacity 0.8s var(--ease-main) 0.3s;
}
.is-load .p-ost__contents {
  opacity: 1;
  transform: translateY(0);
}
@media screen and (max-width: 899px) {
  .p-ost__contents {
    width: 90%;
  }
}
.p-ost__contents-main {
  display: flex;
  align-items: flex-start;
  padding-bottom: 48px;
  gap: 0 60px;
  position: relative;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main {
    display: block;
    padding-bottom: 18px;
  }
}
.p-ost__contents-main::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  position: absolute;
  bottom: 0;
  left: 0;
  background: url(../img/line_blue.png) repeat-x left center/auto 100%;
}
.p-ost__contents-main-image {
  width: 43.4%;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-image {
    width: 87%;
    margin: 0 auto 20px;
  }
}
.p-ost__contents-main-detail {
  flex: 1;
}
.p-ost__contents-main-detail .p-in-head {
  margin-bottom: 33px;
  font-size: 2.8rem;
  letter-spacing: -0.04em;
  line-height: 1.5;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-head {
    margin-bottom: 14px;
    font-size: 1.8rem;
    text-align: center;
  }
}
.p-ost__contents-main-detail .p-in-date {
  margin-bottom: 22px;
  font-size: 2rem;
  letter-spacing: 0.1em;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-date {
    margin-bottom: 22px;
    font-size: 1.3rem;
    text-align: center;
  }
}
.p-ost__contents-main-detail .p-in-lead {
  margin-bottom: 13px;
  font-size: 1.6rem;
  line-height: 1.8;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-lead {
    margin-bottom: 5px;
    font-size: 1.3rem;
    line-height: 2;
  }
}
.p-ost__contents-main-detail .p-in-about {
  padding-bottom: 33px;
  font-size: 1.6rem;
  line-height: 1.8;
  position: relative;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-about {
    padding-bottom: 20px;
    font-size: 1.3rem;
  }
}
.p-ost__contents-main-detail .p-in-about::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  position: absolute;
  bottom: 0;
  left: 0;
  background: url(../img/line_blue.png) repeat-x left center/auto 100%;
}
.p-ost__contents-main-detail .p-in-detail {
  padding-top: 30px;
  padding-bottom: 33px;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-detail {
    padding-top: 25px;
  }
}
.p-ost__contents-main-detail .p-in-detail-head {
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
  margin-bottom: 16px;
  padding: 4px 12px 5px;
  color: var(--color-white);
  font-size: 1.5em;
  letter-spacing: 0.1em;
  background-color: var(--color-navy);
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-detail-head {
    margin-bottom: 8px;
    font-size: 1.3em;
  }
}
.p-ost__contents-main-detail .p-in-detail-item {
  font-size: 1.6rem;
  line-height: 1.4;
  margin-top: 12px;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-detail-item {
    margin-top: 5px;
    font-size: 1.3rem;
  }
}
.p-ost__contents-main-detail .p-in-detail-item:first-of-type {
  margin-top: 0;
}
.p-ost__contents-main-detail .p-in-detail .p-in-caution {
  margin-top: 10px;
  font-size: 1.3rem;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-main-detail .p-in-detail .p-in-caution {
    margin-top: 4px;
    font-size: 1rem;
  }
}
.p-ost__contents-prize {
  padding: 80px 0;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize {
    padding: 49px 0;
  }
}
.p-ost__contents-prize-head {
  text-align: center;
  margin-bottom: 41px;
  font-size: 2.8rem;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-head {
    text-align: center;
    margin-bottom: 29px;
    font-size: 2rem;
  }
}
.p-ost__contents-prize-head .u-small {
  display: block;
  margin-bottom: 10px;
  font-size: 2rem;
  letter-spacing: 0.07em;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-head .u-small {
    display: block;
    margin-bottom: 10px;
    font-size: 1.2rem;
    letter-spacing: 0.07em;
  }
}
.p-ost__contents-prize-image {
  width: 69.6%;
  margin: 0 auto;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-image {
    width: 85.7%;
  }
}
.p-ost__contents-prize-name {
  margin-top: 24px;
  text-align: center;
  font-size: 1.8rem;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-name {
    margin-top: 14px;
    text-align: center;
    font-size: 1.5rem;
  }
}
.p-ost__contents-prize-detail {
  margin-top: 54px;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-detail {
    margin-top: 30px;
  }
}
.p-ost__contents-prize-detail .p-in-lead {
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-detail .p-in-lead {
    font-size: 1.3rem;
  }
}
.p-ost__contents-prize-detail .p-in-head {
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
  margin-top: 18px;
  padding: 4px 12px 5px;
  color: var(--color-white);
  font-size: 1.5em;
  letter-spacing: 0.1em;
  background-color: var(--color-navy);
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-detail .p-in-head {
    margin-bottom: 8px;
    font-size: 1.3em;
  }
}
.p-ost__contents-prize-detail .p-in-text {
  margin-top: 9px;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  line-height: 1.9;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-detail .p-in-text {
    font-size: 1.2rem;
    line-height: 1.6;
  }
}
.p-ost__contents-prize-detail .p-in-caution {
  font-size: 1.2rem;
  line-height: 1.6;
  margin-top: 9px;
}
.p-ost__contents-prize-detail .p-in-caution li {
  padding-left: 1em;
  text-indent: -1em;
}
@media screen and (max-width: 899px) {
  .p-ost__contents-prize-detail .p-in-caution {
    font-size: 1.1rem;
  }
}