/* 学術活動 */
.p-activities {
  padding: 50px 15px;
}

@media (min-width: 48em) {
  .p-activities {
    max-width: 1160px;
    padding: 100px 0 0;
    margin: 0 auto;
  }
}

/* ===== タブナビゲーション ===== */
.tab-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  /* margin: 40px -5px 0; */
  row-gap: 10px;
}

@media (min-width: 48em) {
  .tab-nav {
    justify-content: flex-start;
    /* margin: 60px -10px 0; */
    row-gap: 20px;
  }
}

.tab-nav__button {
  width: calc(50% - 10px);
  margin: 0 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 47px;
  font-family: var(--serif-font);
  font-size: 18px;
  color: #fff;
  letter-spacing: 0.06em;
  background-color: var(--primary-color);
  border: 1px solid var(--primary-color);
  border-radius: 50px;
}

@media (min-width: 48em) {
  .tab-nav__button {
    width: calc(100% / 5 - 20px);
    margin: 0 10px;
    height: 55px;
    font-size: 24px;
    transition: color var(--duration), background-color var(--duration);
  }
}

.tab-nav__button:hover,
.tab-nav__button.active {
  background: #fff;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
}

/* ===== タブコンテンツ ===== */
.tab-content {
  display: none;
  padding: 0px 5px;
  animation: fadeIn 0.5s ease-in-out;
}

@media (min-width: 48em) {
  .tab-content {
    display: none;
    padding: 0px 10px;
  }
}

.tab-content.active {
  display: block;
}

 /* ここからセクションパーツスタイル */
 .p-academic-activities__major-heading,
.p-academic-activities__sub-heading {
  line-height: 1.4;
}
@media (min-width: 48em) {
  .p-academic-activities__major-heading,
.p-academic-activities__sub-heading {
    line-height: 1.5556;
  }
}

.p-academic-activities__major-heading,
.p-academic-activities__sub-heading,
.p-academic-activities p:not(.p-academic-activities__lead, .p-academic-activities__index-heading, .p-academic-activities__index-major, .p-academic-activities__index-sub, .p-academic-activities__writer-text, .p-academic-activities__quote-text, .p-academic-activities__outside-text),
.p-academic-activities__column,
.p-academic-activities__col,
.p-academic-activities__writer,
.p-academic-activities__button,
.p-academic-activities__icons,
.p-academic-activities__youtube,
.p-academic-activities__tab,
.p-academic-activities__images {
  margin-top: 30px;
}
@media (min-width: 48em) {
  .p-academic-activities__major-heading,
.p-academic-activities__sub-heading,
.p-academic-activities p:not(.p-academic-activities__lead, .p-academic-activities__index-heading, .p-academic-activities__index-major, .p-academic-activities__index-sub, .p-academic-activities__writer-text, .p-academic-activities__quote-text, .p-academic-activities__outside-text),
.p-academic-activities__column,
.p-academic-activities__col,
.p-academic-activities__writer,
.p-academic-activities__button,
.p-academic-activities__icons,
.p-academic-activities__youtube,
.p-academic-activities__tab,
.p-academic-activities__images {
    margin-top: 50px;
  }
}

.p-academic-activities img {
  width: 100%;
  border-radius: 9px;
}
@media (min-width: 48em) {
  .p-academic-activities img {
    border-radius: 16px;
  }
}

.p-academic-activities {
  padding: 50px 15px 0;
}
@media (min-width: 48em) {
  .p-academic-activities {
    max-width: 1160px;
    padding: 100px 0 0;
    margin: 0 auto;
  }
}

.p-academic-activities__header .p-academic-activities__icons {
  padding-top: 0;
}

.p-academic-activities__share {
  margin-top: 40px;
  text-align: center;
}

.p-academic-activities__share span {
  position: relative;
  display: inline-block;
  margin-bottom: 15px;
}
.p-academic-activities__share span::before, .p-academic-activities__share span::after {
  position: absolute;
  top: 0;
  width: 1px;
  height: 20px;
  content: "";
  background-color: var(--primary-color);
}
@media (min-width: 48em) {
  .p-academic-activities__share span::before, .p-academic-activities__share span::after {
    height: 25px;
  }
}
.p-academic-activities__share span::before {
  left: -15px;
  transform: rotate(-30deg);
}
.p-academic-activities__share span::after {
  right: -15px;
  transform: rotate(30deg);
}

@media (min-width: 48em) {
  .p-academic-activities__share .p-academic-activities__icon:nth-child(n+2) {
    margin-left: 20px;
  }
}

.p-academic-activities__share .p-academic-activities__icons {
  padding-top: 0;
}

.p-academic-activities__share img {
  width: 35px;
}
@media (min-width: 48em) {
  .p-academic-activities__share img {
    width: 40px;
  }
}

.p-academic-activities__date {
  font-size: 12px;
  color: rgba(31, 71, 126, 0.4);
}
@media (min-width: 48em) {
  .p-academic-activities__date {
    font-size: 14px;
  }
}

.p-academic-activities__heading {
  margin-top: 8px;
  font-size: 26px;
}
@media (min-width: 48em) {
  .p-academic-activities__heading {
    font-size: 36px;
  }
}

.p-academic-activities__lead {
  margin-top: 10px;
}

.p-academic-activities__tag {
  display: flex;
  flex-wrap: wrap;
  margin: 17px 0 20px;
  -moz-column-gap: 4px;
       column-gap: 4px;
  row-gap: 4px;
}
@media (min-width: 48em) {
  .p-academic-activities__tag {
    margin: 25px 0;
  }
}

.p-academic-activities__tag-link {
  padding: 4px 9px;
  font-size: 12px;
  background-color: #f4f6f7;
  border-radius: 4px;
}
@media (min-width: 48em) {
  .p-academic-activities__tag-link {
    font-size: 13px;
    transition: background-color var(--duration);
  }
}
@media (min-width: 48em) {
  .p-academic-activities__tag-link:hover {
    background-color: #efefef;
  }
}

.p-academic-activities__content {
  margin-top: 25px;
  border-top: 1px solid #d9e7ec;
}
@media (min-width: 48em) {
  .p-academic-activities__content {
    margin-top: 40px;
    border-top-width: 2px;
  }
}

.p-academic-activities__major-heading span {
  display: flex;
  padding: 15px 20px;
  font-size: 20px;
  background-color: rgba(31, 71, 126, 0.1);
  border-radius: 9px;
}
@media (min-width: 48em) {
  .p-academic-activities__major-heading span {
    padding: 17px 25px;
    font-size: 30px;
    border-radius: 16px;
  }
}
.p-academic-activities__major-heading span::before {
  flex: 0 0 auto;
  width: 2.5px;
  margin-right: 13px;
  content: "";
  background-color: var(--primary-color);
}
@media (min-width: 48em) {
  .p-academic-activities__major-heading span::before {
    width: 4px;
    margin-right: 16px;
  }
}

.p-academic-activities__sub-heading {
  display: flex;
  font-size: 16px;
}
@media (min-width: 48em) {
  .p-academic-activities__sub-heading {
    font-size: 23px;
  }
}
.p-academic-activities__sub-heading::before {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 6px;
  margin-right: 6px;
  content: "";
  background-color: var(--primary-color);
}
@media (min-width: 48em) {
  .p-academic-activities__sub-heading::before {
    width: 13px;
    height: 13px;
    margin-top: 11px;
    margin-right: 10px;
  }
}

.p-academic-activities__index {
  position: relative;
  padding: 60px 20px 25px;
  margin-top: 30px;
  background-color: #fff;
  border: 1px solid var(--secondary-color);
  border-radius: 10px;
}
@media (min-width: 48em) {
  .p-academic-activities__index {
    max-width: 700px;
    padding: 80px 30px 40px;
    margin-top: 50px;
  }
}

.p-academic-activities__index-heading {
  position: absolute;
  top: 13px;
  left: -7px;
  padding: 6px 35px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background-color: var(--secondary-color);
}
@media (min-width: 48em) {
  .p-academic-activities__index-heading {
    top: 20px;
    padding: 6px 40px;
    font-size: 18px;
  }
}

.p-academic-activities__index-block:nth-of-type(n + 2) {
  margin-top: 16px;
}
@media (min-width: 48em) {
  .p-academic-activities__index-block:nth-of-type(n + 2) {
    margin-top: 20px;
  }
}

.p-academic-activities__index-major {
  display: flex;
  margin-top: 5px;
  font-weight: 600;
}
.p-academic-activities__index-major::before {
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 8px;
  margin-right: 7px;
  content: "";
  background-color: var(--primary-color);
  border-radius: 50%;
}
@media (min-width: 48em) {
  .p-academic-activities__index-major::before {
    width: 8px;
    height: 8px;
    margin-top: 10px;
    margin-right: 10px;
  }
}

.p-academic-activities__index-sub {
  display: flex;
  margin-top: 8px;
  margin-left: 1em;
  font-size: 13px;
  line-height: 1.5;
}
@media (min-width: 48em) {
  .p-academic-activities__index-sub {
    font-size: 14px;
  }
}
.p-academic-activities__index-sub::before {
  flex-shrink: 0;
  width: 10px;
  height: 1px;
  margin-top: 8px;
  margin-right: 7px;
  content: "";
  background-color: var(--primary-color);
}
@media (min-width: 48em) {
  .p-academic-activities__index-sub::before {
    width: 12px;
    margin-top: 10px;
    margin-right: 10px;
  }
}

@media (min-width: 48em) {
  .p-academic-activities__index-major a:hover,
.p-academic-activities__index-sub a:hover {
    text-decoration: underline;
  }
}

@media (min-width: 48em) {
  .p-academic-activities__column {
    display: flex;
    justify-content: space-between;
  }
}
@media (min-width: 48em) {
  .p-academic-activities__column.-reverse {
    flex-direction: row-reverse;
  }
}
.p-academic-activities__column .p-academic-activities__text {
  margin-top: 0 !important;
}
@media (min-width: 48em) {
  .p-academic-activities__column .p-academic-activities__text {
    width: calc(50% - 60px);
  }
}

.p-academic-activities__column-img {
  margin-bottom: 15px;
}
@media (min-width: 48em) {
  .p-academic-activities__column-img {
    width: 50%;
    margin-bottom: 0;
  }
}

.p-academic-activities__col .p-academic-activities__text {
  margin-top: 10px !important;
  font-size: 12px;
}
@media (min-width: 48em) {
  .p-academic-activities__col .p-academic-activities__text {
    margin-top: 20px !important;
    font-size: 16px;
  }
}

.p-academic-activities__col.-col3,
.p-academic-activities__col.-col2 {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -5px;
}
@media (min-width: 48em) {
  .p-academic-activities__col.-col3,
.p-academic-activities__col.-col2 {
    margin: 0 -20px;
  }
}
.p-academic-activities__col.-col3 .p-academic-activities__col-item,
.p-academic-activities__col.-col2 .p-academic-activities__col-item {
  padding: 0 5px;
}
@media (min-width: 48em) {
  .p-academic-activities__col.-col3 .p-academic-activities__col-item,
.p-academic-activities__col.-col2 .p-academic-activities__col-item {
    padding: 0 20px;
  }
}

.p-academic-activities__col.-col3 .p-academic-activities__col-item {
  width: 50%;
}
@media (min-width: 48em) {
  .p-academic-activities__col.-col3 .p-academic-activities__col-item {
    width: calc(100% / 3);
  }
}

.p-academic-activities__col.-col2 .p-academic-activities__col-item {
  width: 50%;
}

.p-academic-activities__images.-col3,
.p-academic-activities__images.-col2 {
  display: flex;
  margin: 0 -5px;
}
@media (min-width: 48em) {
  .p-academic-activities__images.-col3,
.p-academic-activities__images.-col2 {
    margin: 0 -20px;
  }
}
.p-academic-activities__images.-col3 .p-academic-activities__image,
.p-academic-activities__images.-col2 .p-academic-activities__image {
  padding: 0 5px;
}
@media (min-width: 48em) {
  .p-academic-activities__images.-col3 .p-academic-activities__image,
.p-academic-activities__images.-col2 .p-academic-activities__image {
    padding: 0 20px;
  }
}

.p-academic-activities__images.-col3 .p-academic-activities__image {
  width: calc(100% / 3);
}

.p-academic-activities__images.-col2 .p-academic-activities__image {
  width: 50%;
}

.p-academic-activities__col-link {
  display: block;
  text-decoration: underline;
}
@media (min-width: 48em) {
  .p-academic-activities__col-link:hover {
    text-decoration: none;
  }
}

.p-academic-activities__writer {
  display: flex;
  padding: 25px 0;
  margin-top: 30px;
  border-top: 1px dashed #d9e7ec;
  border-bottom: 1px dashed #d9e7ec;
}
@media (min-width: 48em) {
  .p-academic-activities__writer {
    align-items: center;
    padding: 35px 40px;
    margin-top: 50px;
    border-top-width: 2px;
    border-bottom-width: 2px;
  }
}

.p-academic-activities__writer .p-academic-activities__writer-img {
  text-align: center;
}
.p-academic-activities__writer .p-academic-activities__writer-img img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  -o-object-fit: cover;
     object-fit: cover;
}
@media (min-width: 48em) {
  .p-academic-activities__writer .p-academic-activities__writer-img img {
    width: 150px;
    height: 150px;
  }
}

.p-academic-activities__writer-text,
.p-academic-activities__outside-text,
.p-academic-activities__quote-text {
  color: #000;
}

.p-academic-activities__writer-text {
  width: calc(100% - (100px + 20px));
  margin-left: 20px;
}
@media (min-width: 48em) {
  .p-academic-activities__writer-text {
    width: calc(100% - (150px + 30px));
    margin-left: 30px;
  }
}

.p-academic-activities__outside {
  margin-top: 30px;
  background-color: #fff;
  border-radius: 9px;
  box-shadow: var(--shadow);
}
@media (min-width: 48em) {
  .p-academic-activities__outside {
    display: flex;
    align-items: center;
    margin-top: 50px;
    border-radius: 16px;
  }
}

.p-academic-activities__outside .p-academic-activities__outside-img img {
  height: 180px;
  border-radius: 9px 9px 0 0;
  -o-object-fit: cover;
     object-fit: cover;
}
@media (min-width: 48em) {
  .p-academic-activities__outside .p-academic-activities__outside-img img {
    width: 250px;
    height: 250px;
    border-radius: 16px 0 0 16px;
  }
}

.p-academic-activities__outside-inner {
  padding: 15px 20px 25px;
}
@media (min-width: 48em) {
  .p-academic-activities__outside-inner {
    width: calc(100% - 250px);
    padding: 0 40px;
  }
}

.p-academic-activities__outside-text {
  margin-top: 0;
}

.p-academic-activities__outside-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--primary-color);
  border-bottom: 1px solid currentColor;
}
@media (min-width: 48em) {
  .p-academic-activities__outside-link {
    margin-top: 8px;
  }
}
@media (min-width: 48em) {
  .p-academic-activities__outside-link:hover {
    border-bottom-color: transparent;
  }
}

.p-academic-activities__outside-link svg {
  margin-top: -3px;
}

.p-academic-activities__quote {
  position: relative;
  padding: 20px;
  margin-top: 30px;
  border: 1px solid var(--secondary-color);
  border-radius: 9px;
}
@media (min-width: 48em) {
  .p-academic-activities__quote {
    padding: 33px 40px;
    margin-top: 50px;
    border-radius: 16px;
  }
}
.p-academic-activities__quote::before, .p-academic-activities__quote::after {
  position: absolute;
  width: 28px;
  height: 22px;
  content: "";
  background-image: url("/assets/images/pages/common/icon_quote.svg");
  background-size: contain;
}
@media (min-width: 48em) {
  .p-academic-activities__quote::before, .p-academic-activities__quote::after {
    width: 32px;
    height: 26px;
  }
}
.p-academic-activities__quote::before {
  top: -13px;
  left: 13px;
}
@media (min-width: 48em) {
  .p-academic-activities__quote::before {
    left: 23px;
  }
}
.p-academic-activities__quote::after {
  right: 13px;
  bottom: -13px;
  transform: rotate(180deg);
}
@media (min-width: 48em) {
  .p-academic-activities__quote::after {
    right: 23px;
  }
}

.p-academic-activities__quote-text {
  margin-top: 0;
}

.p-academic-activities__quote-text span {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  font-style: italic;
  color: #848484;
}
@media (min-width: 48em) {
  .p-academic-activities__quote-text span {
    font-size: 14px;
  }
}
@media (min-width: 48em) {
  .p-academic-activities__quote-text span a:hover {
    text-decoration: underline;
  }
}

.p-academic-activities__icon:nth-child(n+2) {
  margin-left: 15px;
}
@media (min-width: 48em) {
  .p-academic-activities__icon:nth-child(n+2) {
    margin-left: 25px;
  }
}

.p-academic-activities__youtube iframe {
  width: 100%;
  height: auto;
  margin-bottom: 15px;
  aspect-ratio: 16/9;
}
@media (min-width: 48em) {
  .p-academic-activities__youtube iframe {
    width: 560px;
    margin-bottom: 20px;
  }
}

@media (min-width: 48em) {
  .p-academic-activities__youtube.-grid {
    display: flex;
  }
}
.p-academic-activities__youtube.-grid .p-academic-activities__text {
  padding-top: 0;
}
@media (min-width: 48em) {
  .p-academic-activities__youtube.-grid .p-academic-activities__text {
    width: calc(100% - (560px + 50px));
    margin-left: 50px;
  }
}

.p-academic-activities__tab-list {
  display: flex;
}

.p-academic-activities__tab-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: calc(100% / 3);
  height: 45px;
  color: #7ba1b5;
  background-color: #e1eaee;
  border-radius: 9px 9px 0 0;
}
@media (min-width: 48em) {
  .p-academic-activities__tab-button {
    width: 250px;
    height: 78px;
    font-size: 19px;
    border-radius: 12px 12px 0 0;
    transition: color var(--duration);
  }
}
.p-academic-activities__tab-button:nth-child(n+2) {
  margin-left: 6px;
}
@media (min-width: 48em) {
  .p-academic-activities__tab-button:nth-child(n+2) {
    margin-left: 10px;
  }
}
@media (min-width: 48em) {
  .p-academic-activities__tab-button:hover {
    color: var(--secondary-color);
  }
}
.p-academic-activities__tab-button.is-active {
  color: #fff;
  background-color: var(--secondary-color);
}

.p-academic-activities__tab-block {
  padding: 20px 20px 25px;
  background-color: #fff;
  border-radius: 0 0 9px 9px;
  box-shadow: var(--shadow);
}
@media (min-width: 48em) {
  .p-academic-activities__tab-block {
    padding: 40px;
    border-radius: 0 12px 12px 12px;
  }
}
.p-academic-activities__tab-block:nth-child(n+2) {
  display: none;
}
.p-academic-activities__tab-block .p-academic-activities__text {
  padding-top: 0 !important;
}

.p-academic-activities__col-link,
.p-academic-activities__column a {
  color: var(--primary-color);
  text-decoration: underline;
}
@media (min-width: 48em) {
  .p-academic-activities__col-link:hover,
.p-academic-activities__column a:hover {
    text-decoration: none;
  }
}