.h1_bg {
  background: url("../img/mv.jpg") center no-repeat #ebf5fa;
  background-size: cover;
}

.kadai {
  background: url("../img/kadai.jpg") top right no-repeat;
  background-size: calc(50% - 0.5em) auto;
  position: relative;
  margin-bottom: 130px;
}
.kadai dl {
  width: 100%;
  text-align: left;
  padding-left: 60px;
}
.kadai dl dt {
  padding-top: 155px;
}
.kadai dl dd + dd {
  margin-top: 5px;
}
.kadai dl dd {
  position: relative;
  padding-left: 32px;
}
.kadai dl dd:before {
  content: "";
  position: absolute;
  width: 5px;
  height: 8px;
  top: .5em;
  left: 7px;
  -webkit-transform: rotate(50deg);
  -ms-transform: rotate(50deg);
  transform: rotate(50deg);
  border-right: 2px solid #1b8fc8;
  border-bottom: 2px solid #1b8fc8;
  z-index: 30;
}
.kadai dl dd:after {
  content: "";
  position: absolute;
  top: .25em;
  left: 0;
  width: 20px;
  height: 20px;
  border: 1px solid #1b8fc8;
  border-radius: 2px;
  background-color: #fff;
  z-index: 20;
}
.kadai dl:before {
  content: "";
  background: #ebf5fa;
  background: linear-gradient(90deg, #ebf5fa 0%, #ebf5fa 74%, #fff 74%, #fff 100%);
  height: 100%;
  width: 100%;
  position: absolute;
  top: 80px;
  margin: auto;
  left: 0;
  z-index: -1;
}

.bigtxt {
  color: #1b8fc8;
  text-align: center;
  margin: 0 auto 100px auto;
  font-size: 3rem;
  font-weight: bold;
}
.bigtxt .f54 {
  font-size: 1.8em;
}
.bigtxt .f40 {
  font-size: 1.3em;
}

.point3 li {
  background: linear-gradient(#fff 0%, #fff 44px, #ebf5fa 44px, #ebf5fa 400px, #fff 400px, #fff 100%);
}
.point3 li .pointttl {
  color: #6ab7de;
  font-size: 8rem;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
  line-height: 1;
}
.point3 li .pointttl .en {
  letter-spacing: 0.01em;
}
.point3 li .pointttl .en span {
  font-size: 1.6rem;
  display: block;
  letter-spacing: 0.05em;
}
.point3 li .pointttl h3 {
  color: #1b8fc8;
  font-size: 2.8rem;
  margin-top: 30px;
  margin-bottom: 45px;
}
.point3 li .flex figure {
  width: 50%;
}
.point3 li .flex figure img {
  width: 100%;
  height: auto;
}
.point3 li .flex > div {
  background: #fff;
  text-align: left;
  padding: 50px 40px;
  margin-top: 47px;
}
.point3 li .flex > div strong {
  color: #1b8fc8;
  font-weight: bold;
}
.point3 li .flex > div .bluebox {
  background: #ebf5fa;
  text-align: center;
  padding-top: 25px;
  padding-bottom: 25px;
  margin-top: 27px;
  margin-right: auto;
  margin-left: auto;
  font-weight: bold;
  font-size: 2.4rem;
}

@media screen and (max-width: 1080px) and (min-width: 769px) {
  .kadai {
    background: url("../img/kadai.jpg") top right no-repeat;
    background-size: calc(40% - 0.5em) auto;
    position: relative;
    margin-bottom: 130px;
  }
  .kadai dl {
    padding-left: 30px;
  }
  .kadai dl dt {
    padding-top: 125px;
  }

  .bigtxt {
    margin: 0 auto 100px auto;
    font-size: 2.6rem;
  }

  .point3 li .flex > div .bluebox {
    padding-top: 20px;
    padding-bottom: 20px;
    margin-top: 25px;
    font-size: 1.5rem;
  }
}
@media only screen and (max-width: 768px) {
  .kadai {
    background: linear-gradient(#ebf5fa 0%, #ebf5fa 81%, #fff 81%, #fff 100%);
    position: relative;
    margin-bottom: 60px;
  }
  .kadai dl {
    padding-left: 0;
    padding-left: 10px;
    padding-right: 10px;
  }
  .kadai dl dt {
    padding-top: 25px;
  }
  .kadai dl dd {
    padding-left: 32px;
  }
  .kadai dl:before {
    display: none;
  }
  .kadai figure {
    width: 90%;
    margin-top: 20px;
    margin-left: 4%;
    display: block;
  }
  .kadai figure img {
    width: 100%;
    height: auto;
  }

  .bigtxt {
    margin: 0 auto 60px auto;
    font-size: 2.3rem;
    font-weight: bold;
  }
  .bigtxt .f54 {
    font-size: 3.6rem;
  }
  .bigtxt .f40 {
    font-size: 2.3rem;
  }

  .point3 li {
    background: linear-gradient(#fff 0%, #fff 44px, #ebf5fa 44px, #ebf5fa 300px, #fff 300px, #fff 100%);
  }
  .point3 li .pointttl p.en {
    font-size: 6rem;
  }
  .point3 li .pointttl p.en span {
    font-size: 1.6rem;
  }
  .point3 li .pointttl h3 {
    font-size: 2.3rem;
    line-height: 1.5;
    margin-top: 15px;
    margin-bottom: 20px;
  }
  .point3 li .flex figure {
    width: 90%;
    margin: 0 0 0 4%;
  }
  .point3 li .flex > div {
    padding: 10px;
    margin-top: 20px;
  }
  .point3 li .flex > div p {
    margin-bottom: 15px;
  }
  .point3 li .flex > div .bluebox {
    font-size: 1.7rem;
    margin-top: 15px;
  }

  div.inner {
    margin-bottom: 20px;
  }
}