html,
body {
  font-family: "Poppins", sans-serif;
  font-weight: 500;
  letter-spacing: 0.1em;
}
@media only screen and (min-width: 769px) {
  html,
  body {
    height: 100%;
    scroll-behavior: smooth;
  }
}

@media only screen and (min-width: 769px) {
  .wrapper {
    height: 100%;
    overflow-y: auto;
    scroll-snap-type: y mandatory;
    overscroll-behavior: contain;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .wrapper::-webkit-scrollbar {
    width: 0;
    height: 0;
  }
}

@media only screen and (min-width: 769px) {
  .section {
    height: 100vh;
    scroll-snap-align: start;
  }
}

#firstView {
  position: relative;
}
@media only screen and (max-width: 768px) {
  #firstView {
    height: 100vh;
    height: 100dvh;
  }
}
#firstView .heading {
  color: #fff;
  font-size: 110px;
  font-weight: 700;
  line-height: 1.1;
  position: absolute;
  left: 38px;
  bottom: 43px;
  z-index: 1;
}
@media only screen and (max-width: 768px) {
  #firstView .heading {
    font-size: 17.3333333333vw;
    left: 5.3333333333vw;
    bottom: 5.3333333333vw;
  }
}
#firstView .scrollDown {
  position: absolute;
  right: 53px;
  bottom: 38px;
  z-index: 1;
}
@media only screen and (max-width: 768px) {
  #firstView .scrollDown {
    right: 5.3333333333vw;
    bottom: 5.3333333333vw;
  }
}
#firstView .scrollDown img {
  width: 149px;
  height: auto;
}
@media only screen and (max-width: 768px) {
  #firstView .scrollDown img {
    width: 26.6666666667vw;
  }
}
#firstView .bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

@media only screen and (min-width: 769px) {
  #topics {
    position: relative;
    display: grid;
    place-items: center;
    padding-top: 10vh;
  }
}
#topics .heading {
  color: #00244F;
  font-size: 78px;
  font-weight: 700;
  display: flex;
  align-items: center;
  column-gap: 0.5em;
}
@media only screen and (min-width: 769px) {
  #topics .heading {
    position: absolute;
    top: 0;
    left: 0;
  }
}
@media only screen and (max-width: 768px) {
  #topics .heading {
    font-size: 66px;
  }
}
#topics .heading::before {
  content: "";
  width: 26px;
  height: 153px;
  background: url("../images/index/bg-heading01.jpg") center center/cover no-repeat;
  display: inline-block;
}
@media only screen and (max-width: 768px) {
  #topics .heading::before {
    width: 22px;
    height: 128px;
  }
}
#topics .contents {
  width: 100%;
}
#topics .contents .field {
  padding-inline: 20px;
}
@media only screen and (max-width: 768px) {
  #topics .contents .field {
    margin-top: 2em;
  }
}
#topics .contents .field .subHeading {
  font-size: 25px;
  font-weight: 700;
  display: flex;
  justify-content: center;
  align-items: center;
  column-gap: 1em;
}
@media only screen and (max-width: 768px) {
  #topics .contents .field .subHeading {
    font-size: 15px;
  }
}
#topics .contents .field .subHeading::before, #topics .contents .field .subHeading::after {
  content: "";
  background-color: #1D4A86;
  width: 2px;
  height: 36px;
}
@media only screen and (max-width: 768px) {
  #topics .contents .field .subHeading::before, #topics .contents .field .subHeading::after {
    height: 24px;
  }
}
#topics .contents .field .button {
  display: flex;
  justify-content: center;
  margin-top: 1.5em;
}
#topics .contents .field .button a {
  color: #fff;
  font-size: 35px;
  font-weight: 700;
  letter-spacing: 0.2em;
  background: url("../images/index/bg-button01_pc.jpg") center center/cover no-repeat;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  column-gap: 0.5em;
  border-radius: calc(infinity * 1px);
  width: 720px;
  padding-block: 25px 23px;
  transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1) 0s;
}
@media only screen and (max-width: 768px) {
  #topics .contents .field .button a {
    font-size: 20px;
    line-height: 1.4;
    text-align: center;
    column-gap: 1em;
    width: 100%;
    background-image: url("../images/index/bg-button01_sp.jpg");
    padding-block: 13px 12px;
  }
}
#topics .contents .field .button a::after {
  content: "";
  width: 34px;
  aspect-ratio: 1;
  background: url("../images/common/icon-arrow.svg") center center/contain no-repeat;
}
@media only screen and (max-width: 768px) {
  #topics .contents .field .button a::after {
    width: 20px;
  }
}
#topics .contents .field .button a:hover {
  opacity: 0.7;
}
#topics .contents .recommend {
  padding-inline: 20px;
  margin-top: 4em;
}
#topics .contents .recommend .subHeading {
  color: #1C4A86;
  display: flex;
  justify-content: center;
  align-items: center;
  column-gap: 2em;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .subHeading {
    column-gap: 1.5em;
  }
}
#topics .contents .recommend .subHeading .text {
  font-size: 29px;
  font-weight: 700;
  letter-spacing: 0.15em;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .subHeading .text {
    font-size: 19px;
  }
}
#topics .contents .recommend .subHeading .before,
#topics .contents .recommend .subHeading .after {
  display: flex;
  align-items: center;
  column-gap: 0.5em;
}
#topics .contents .recommend .subHeading .before::before, #topics .contents .recommend .subHeading .before::after,
#topics .contents .recommend .subHeading .after::before,
#topics .contents .recommend .subHeading .after::after {
  content: "";
  background-color: currentColor;
}
#topics .contents .recommend .subHeading .before::before,
#topics .contents .recommend .subHeading .after::before {
  width: 56px;
  height: 2px;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .subHeading .before::before,
  #topics .contents .recommend .subHeading .after::before {
    width: 40px;
  }
}
#topics .contents .recommend .subHeading .before::after,
#topics .contents .recommend .subHeading .after::after {
  width: 10px;
  aspect-ratio: 1;
  border-radius: 50%;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .subHeading .before::after,
  #topics .contents .recommend .subHeading .after::after {
    width: 7px;
  }
}
#topics .contents .recommend .subHeading .before {
  order: -1;
}
#topics .contents .recommend .subHeading .after::after {
  order: -1;
}
#topics .contents .recommend .inner {
  margin-top: 3em;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .inner {
    margin: 2em -20px 0 0;
    overflow-x: scroll;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  #topics .contents .recommend .inner::-webkit-scrollbar {
    display: none;
  }
}
#topics .contents .recommend .inner .list {
  max-width: 1280px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  column-gap: 3%;
  counter-reset: number;
  position: relative;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .inner .list {
    width: 265vw;
    padding-right: 20px;
  }
}
#topics .contents .recommend .inner .list::before {
  content: "";
  background: url("../images/index/bg-recommend01.jpg") center center/cover no-repeat;
  width: 535px;
  aspect-ratio: 1070/188;
  position: absolute;
  top: 39%;
  left: 50%;
  z-index: -1;
  translate: -50% 0;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .inner .list::before {
    width: 44.8692152918%;
    top: 37%;
  }
}
#topics .contents .recommend .inner .list li .lead {
  color: #1C4A86;
  display: flex;
  align-items: center;
  column-gap: 1em;
}
#topics .contents .recommend .inner .list li .lead::before {
  counter-increment: number;
  content: counter(number, decimal-leading-zero);
  font-size: 44px;
  font-weight: 700;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .inner .list li .lead::before {
    font-size: 34px;
  }
}
#topics .contents .recommend .inner .list li .lead span {
  font-size: 20px;
  font-weight: 700;
  text-underline-offset: 0.3em;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .inner .list li .lead span {
    font-size: 16px;
  }
}
#topics .contents .recommend .inner .list li a {
  aspect-ratio: 401/256;
  display: grid;
  grid-template-rows: repeat(2, auto);
  justify-content: center;
  align-items: center;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  border-radius: 15px;
}
#topics .contents .recommend .inner .list li a .title {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  line-height: 1.5;
  text-underline-offset: 0.3em;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  display: grid;
  place-items: center;
  align-self: end;
  margin-top: 1.25em;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .inner .list li a .title {
    font-size: 20px;
  }
}
#topics .contents .recommend .inner .list li a .button {
  color: #1C4A86;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  background-color: #fff;
  padding: 15px 25px;
  margin-inline: auto;
  border-radius: calc(infinity * 1px);
  align-self: start;
  margin-top: 1.5em;
  transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1) 0s;
}
#topics .contents .recommend .inner .list li a:hover .button {
  color: #fff;
  background-color: #1C4A86;
}
#topics .contents .recommend .inner .list li .description {
  font-size: 15px;
  margin-top: 0.5em;
}
#topics .contents .recommend .inner .list li.keywords a {
  background-image: url("../images/index/image-recommend01.jpg");
}
#topics .contents .recommend .inner .list li.works a {
  background-image: url("../images/index/image-recommend02.jpg");
}
#topics .contents .recommend .inner .list li.voice a {
  background-image: url("../images/index/image-recommend03.jpg");
}
#topics .contents .recommend .scroll {
  display: none;
}
@media only screen and (max-width: 768px) {
  #topics .contents .recommend .scroll {
    margin: 2.5em -20px 0 0;
    display: flex;
    justify-content: flex-end;
  }
}
#topics .contents .recommend .scroll button {
  display: block;
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  outline: none;
  appearance: none;
  cursor: pointer;
}
#topics .contents .recommend .scroll img {
  width: 151px;
  height: auto;
}