.cover {
  width: 1420px;
  margin: 0 auto;
  max-width: calc(100% - 40px);
}

.sdgs_key {
  width: 100%;
  padding-top: 8rem;
  position: relative;
  z-index: +5;
  color: #fff;
}

.sdgs_key .cover {
  padding: 8rem 0;
}

.sdgs_key .maintitle {
  font-size: 6rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 2.2rem;
}

.sdgs_key .subtitle {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 4.4rem;
}

.sdgs_key .text {
  font-size: 1.8rem;
  margin-top: 1.4rem;
}

.sdgs_key:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: calc(50% + 3rem);
  height: 100%;
  background: linear-gradient(90deg,rgba(36, 45, 62, 1) 0%, rgba(83, 100, 135, 1) 92%, rgba(83, 100, 135, 0) 100%);
  z-index: -1;
}

.sdgs_key .keyimg {
  position: absolute;
  top: 0;
  right: 0;
  width: calc(50% + 11rem);
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

main .hl {
  font-size: 3.6rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.5;
  margin-bottom: 5rem;
  color: #536487;
}

#sec_1 {
  padding: 6rem 0 10rem;
}

#sec_1 .lead {
  font-size: 2.4rem;
  text-align: center;
  line-height: 1.5;
  padding-bottom: 2rem;
  position: relative;
  margin-bottom: 4rem;
}

#sec_1 .lead:after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  width: 4.2rem;
  height: 3px;
  background-color: #94b7ec;
  margin: 0 auto;
}

#sec_1 .col {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

#sec_1 .col img {
  width: calc((100% - 15rem) / 7);
}

#sec_2 {
  counter-reset: number 0;
}

#sec_2>.content {
  padding: 6rem 0;
}

#sec_2>.content:nth-of-type(odd) {
  background-color: #f3f8ff;
}

#sec_2 .col {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  column-gap: 6rem;
  row-gap: 4rem;
}

#sec_2 .col .textside {
  width: 53rem;
}

#sec_2 .col .lead {
  font-size: 3.6rem;
  font-weight: 700;
  color: #536487;
  line-height: 1.5;
  padding-left: 4em;
  position: relative;
  margin-bottom: 4rem;
}

#sec_2 .col .lead:before {
  counter-increment: number 1;
  content: counter(number, decimal-leading-zero);
  font-family: "Rubik Dirt", sans-serif;
  font-size: 2.22em;
  font-weight: 400;
  line-height: 1.3;
  height: 1.3em;
  color: #4b6eb5;
  position: absolute;
  inset: 0 auto 0 0;
  margin: auto 0;
}

#sec_2 .col h4 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 2rem;
  color: #536487;
}

#sec_2 .col .goal_col {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 4.4rem;
}

#sec_2 .col .goal_col img {
  width: calc((100% - 5rem) / 6);
}

#sec_2 .col .text {
  font-size: 1.8rem;
}

#sec_2 .col .imgside {
  width: calc(100% - 59rem);
  aspect-ratio: 2 / 1;
  gap: 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: repeat(3, 1fr);
}

#sec_2 .col .imgside .img_main {
  grid-row: 1 / 4;
}

#sec_2 .col .imgside img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#sec_3 {
  background-image: url(../img/sdgs/sec_3_bg.webp);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: right center;
}

#sec_3 .lead {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.5;
  color: #536487;
  margin-bottom: 5.5rem;
}

#sec_3 .text {
  font-size: 2rem;
  width: 80rem;
  max-width: 100%;
}

#sec_3 .text+.text {
  margin-top: 2em;
}

#sec_3 .cover {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 58rem;
  padding: 3rem 0;
}

@media (max-width: 767px) {
  .sdgs_key {
    padding: 0;
  }

  .sdgs_key:before {
    width: 100%;
    height: calc(100% - 48vw);
    background: linear-gradient(180deg, rgba(36, 45, 62, 1) 0%, rgba(83, 100, 135, 1) 92%, rgba(83, 100, 135, 0) 100%);
  }

  .sdgs_key .keyimg {
    position: relative;
    inset: auto;
    width: 100%;
    height: auto;
    margin-top: -3rem;
  }

  .sdgs_key .maintitle {
    font-size: 3.2rem;
    margin-bottom: 1.6rem;
  }

  .sdgs_key .subtitle {
    font-size: 1.6rem;
  }

  .sdgs_key .text {
    font-size: 1.5rem;
  }

  .sdgs_key .cover {
    padding: 5rem 0;
  }

  main .hl {
    font-size: 2.4rem;
    margin-bottom: 3rem;
  }

  #sec_1 {
    padding: 6rem 0;
  }

  #sec_1 .lead {
    font-size: 2rem;
  }

  #sec_1 .col {
    gap: 1rem;
  }

  #sec_1 .col img {
    width: calc((100% - 3rem) / 4);
  }

  #sec_2 .col .textside,
  #sec_2 .col .imgside {
    width: 100%;
  }

  #sec_2 .col .lead {
    font-size: 2.4rem;
  }

  #sec_2 .col .text {
    font-size: 1.6rem;
  }

  #sec_3 .lead {
    font-size: 2.4rem;
    margin-bottom: 3rem;
  }

  #sec_3 .text {
    font-size: 1.6rem;
  }

  #sec_3 {
    background-color: #f3f8ff;
    background-size: 100% auto;
    background-position: right bottom;
  }

  #sec_3 .cover {
    min-height: 0;
    padding: 3rem 0 34vw;
  }
}