.c-heading__h2 {
  font-family: "Yu Gothic", "游ゴシック体", "Segoe UI", "Hiragino Kaku Gothic Pro", "メイリオ", sans-serif;
  font-size: 3.625rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1;
  position: relative;
  display: inline-block;
}

.c-heading__h2-sub {
  font-family: "Roboto", sans-serif;
  display: block;
  font-size: 0.34em;
  font-weight: 700;
  color: var(--main-blue);
  margin-top: 20px;
  letter-spacing: 0;
}

@media only screen and (max-width: 768px) {
  .c-heading__h2 {
    font-size: clamp(1.5rem, 6vw, 3rem);
  }

  .c-heading__h2-sub {
    margin-top: 0.8em;
  }
}

.c-heading__h3 {
  font-size: 2.125rem;
  font-weight: bold;
  line-height: 1;
  position: relative;
  display: inline-block;
  margin-bottom: 19px;
}

.c-heading__h3::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -15px;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--main-blue);
}

@media only screen and (max-width: 768px) {
  .c-heading__h3 {
    font-size: clamp(1.25rem, 4vw, 2rem);
  }

  .c-heading__h3::after {
    bottom: -10px;
    height: 3px;
  }
}


.c-heading__h4 {
  font-size: 1.5rem;
  font-weight: 500;
  line-height: 1;
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.c-heading__h4::before {
  content: "";
  display: block;
  width: 16px;
  height: 16px;
  border-radius: 3.4px;
  background-color: var(--main-blue);
}

@media only screen and (max-width: 768px) {
  .c-heading__h4 {
    font-size: clamp(1rem, 2vw, 1.25rem);
  }

  .c-heading__h4::before {
    width: 12px;
    height: 12px;
  }
}

.mv {
  aspect-ratio: 36 / 7;
  max-height: 280px;
  max-width: 100vw;
  width: 100%;
}

@media only screen and (max-width: 768px) {
  .mv {
    aspect-ratio: auto;
    height: 25vh;
  }
}

.mv .l-wrapper {
  max-width: 1200px;
  width: 100%;
  margin-inline: auto;
}

.mv .bg {
  position: relative;
  max-width: 1240px;
  width: 100%;
  height: 100%;
  padding: 14% 20px 20px;
  margin-inline: auto;
}

@media only screen and (max-width: 768px) {
  .mv .bg {
    padding: min(5.33vw, 40px);
    height: 100%;
  }
}

.mv .bg::before {
  content: "";
  position: absolute;
  top: -1.5vw;
  bottom: 0;
  left: 8vw;
  width: min(14.4vw, 208px);
 height: calc(100% + min(2.5vw, 36px));
  background-image: url('../img/library/mv_bg.svg');
  background-repeat: no-repeat;
  background-size: 100%;
  background-position: left bottom;
  z-index: -1;
}

@media only screen and (max-width: 1920px) {
.mv .bg::before {
  top: auto;
  bottom: 0;
  height: calc(100% + min(2.5vw, 36px));
}
}

@media only screen and (max-width: 768px) {
  .mv .bg::before {
    width: 15vw;
    height: 100%;
  }
}

.mv .c-heading__h2 {
  position: absolute;
  top: 90px;
  left: 20px;
}

@media only screen and (max-width: 768px) {
  .mv .c-heading__h2 {
    position: static;
  }
}


.breadcrumb {
  display: flex;
  justify-content: flex-end;
  font-size: 0.75rem;
  position: absolute;
  right: 20px;
  top: 240px;
  bottom: auto;
}

@media only screen and (max-width: 1920px) {
.breadcrumb {
  top: auto;
  right: 20px;
  bottom: 12%;
}
}

@media only screen and (max-width: 1340px) {
  .breadcrumb {
    bottom: 20px;
  }
}

@media only screen and (max-width: 768px) {
  .breadcrumb {
    position: absolute;
    right: min(5.33vw, 40px);
    bottom: 20px;
  }
}

.breadcrumb__list {
  display: flex;
  align-items: center;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
}

.breadcrumb__item+.breadcrumb__item::before {
  content: "";
  display: inline-block;
  width: 0.75rem;
  height: 2px;
  margin: 0 10px;
  background-color: var(--main-blue);
}

.section-library .bg {
  padding: 100px 0;
}

@media only screen and (max-width: 768px) {
  .section-library .bg {
    padding: min(8vw, 60px) 0;
  }
}

.section-library .l-wrapper {
  max-width: 1080px;
  width: 100%;
  padding: 0 20px;
  margin-inline: auto;
}

@media only screen and (max-width: 768px) {
  .section-library .l-wrapper {
    padding: 0 min(5.33vw, 40px);
  }
}

.section-library__public-relations-list {
  padding-top: 3em;
}

@media only screen and (max-width: 768px) {
  .section-library__public-relations-list {
    padding-top: 2.5em;
  }
}

.section-library__public-relations-list li+li {
  padding-top: 1.25em;
}

@media only screen and (max-width: 768px) {
  .section-library__public-relations-list li+li {
    padding-top: 1em;
  }
}

.section-library__public-relations-link {
  display: block;
  font-size: 1rem;
  border-bottom: 1px solid #d9e2ec;
  position: relative;
  padding-left: 1em;
  padding-bottom: 1em;
}

@media only screen and (max-width: 768px) {
  .section-library__public-relations-link {
    font-size: 0.9375rem;
  }
}

.section-library__public-relations-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(50% - 0.5rem);
  transform: translateY(-50%);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--main-blue);
}

.section-library__public-relations-link::after {
  content: "";
  display: inline-block;
  margin-left: 0.5em;
  vertical-align: middle;
  width: 1em;
  height: 1em;
  background-image: url('../img/common/icon_pdf.svg');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  position: relative;
  top: -1px;
}

.section-library__about-relations-list {
  padding-top: 3em;
}

@media only screen and (max-width: 768px) {
  .section-library__about-relations-list {
    padding-top: 2.5em;
  }
}

.section-library__about-relations-list li+li {
  padding-top: 1.25em;
}

@media only screen and (max-width: 768px) {
  .section-library__about-relations-list li+li {
    padding-top: 1em;
  }
}

.section-library__about-relations-link {
  display: block;
  font-size: 1rem;
  border-bottom: 1px solid var(--white);
  position: relative;
  padding-left: 1em;
  padding-bottom: 1em;
}

@media only screen and (max-width: 768px) {
  .section-library__about-relations-link {}
}

.section-library__about-relations-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(50% - 0.5rem);
  transform: translateY(-50%);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--main-blue);
}

.section-library__about-relations-link::after {
  content: "";
  display: inline-block;
  margin-left: 0.5em;
  vertical-align: middle;
  width: 1em;
  height: 1em;
  background-image: url('../img/common/icon_pdf.svg');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  position: relative;
  top: -1px;
}

.learn__grid {
  padding-top: 3em;
  display: grid;
  gap: 30px 20px;
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 1080px) {
  .learn__grid {
    padding-top: 2.5em;
    grid-template-columns: repeat(2, 1fr);
    gap: min(13.3vw, 10px);
  }
}

@media (max-width: 480px) {
  .learn__grid {
    grid-template-columns: 1fr;
    gap: min(13.3vw, 10px) 0;
  }
}

.learn__card {
  background-color: var(--main-blue);
  border-radius: 10px;
  padding: 10px 20px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  text-align: center;
  height: 150px;
  position: relative;
}

@media only screen and (max-width: 768px) {
  .learn__card {
    padding: 10px;
    height: 120px;
  }
}

.card-right-icon {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  object-fit: contain;
}

@media only screen and (max-width: 768px) {
  .card-right-icon {
    right: 10px;
  }
}

.learn__card-link {
  display: flex;
  gap: 0 10px;
  align-items: center;
  font-size: 1.375rem;
  line-height: 1;
  font-weight: 700;
  color: var(--white);
  position: absolute;
  inset: 0;
  left: 20px;
}

@media only screen and (max-width: 768px) {
  .learn__card-link {
    font-size: 1rem;
    left: 10px;
  }
}

.learn__card-img {
  max-width: 104px;
  width: 100%;
}

@media only screen and (max-width: 768px) {
  .learn__card-img {
    width: 25%;
  }
}