#key {
  background-image: url("../img/english/key.jpg");
}


#sec1 {
  padding: 15vw 0;
}
#sec1 .set .txtbox .txt {
  margin-top: 7vw;
    letter-spacing:0;
}
#sec1 .set .img {
  margin-top: 10vw;
}
@media only screen and (min-width: 768px) {
  #sec1 {
    padding: 109px 0 113px;
  }
  #sec1 h2.md_ttl {
    line-height: 60px;
  }
  #sec1 .set {
    width: 1250px;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: start;
        align-items: flex-start;
  }
  #sec1 .set .txtbox {
    width: 519px;
    margin-top: 112px;
  }
  #sec1 .set .txtbox .txt {
    width: 470px;
    margin-top: 95px;
  }
  #sec1 .set .img {
    width: 731px;
    margin-top: 0;
  }
}

#sec2 {
  margin: 0 6vw;
  padding: 15vw 0;
  background: #f1f1f1;
}
#sec2 h3.ttl {
  width: 80%;
  max-width: 560px;
  margin: 10vw auto 0;
  padding: 5px;
  box-sizing: border-box;
  text-align: center;
}
#sec2 h3.ttl + h3.ttl {
  margin-top: 5vw;
}
#sec2 .deco {
  display: -ms-flexbox;
  display: flex;
  cursor: vertical-text;
  writing-mode: vertical-rl;
  -o-writing-mode: vertical-rl;
  -ms-writing-mode: vertical-rl;
  -ms-writing-mode: tb-rl;
  -moz-writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  text-orientation: sideways-right;
  -o-text-orientation: sideways-right;
  -ms-text-orientation: upright;
  -ms-text-orientation: sideways-right;
  -moz-text-orientation: sideways-right;
  -webkit-text-orientation: sideways-right;
  position: absolute;
  top: -15vw;
  left: 0;
}
#sec2 .deco::before {
  content: "";
  width: 1px;
  height: 20vw;
  display: inline-block;
  margin: 0 auto 3vw;
  background: #a8a8a8;
}
#sec2 .txt {
  margin-top: 10vw;
  letter-spacing:0;

}
#sec2 .img {
  margin-top: 10vw;
}
@media only screen and (min-width: 768px) {
  #sec2 {
    margin: 0 30px;
    padding: 100px 0 91px;
  }
  #sec2 h3.ttl {
    margin-top: 77px;
    padding: 27px 10px 33px;
  }
  #sec2 h3.ttl + h3.ttl {
    margin-top: 30px;
  }
  #sec2 .deco {
    top: -100px;
    left: 0;
  }
  #sec2 .deco::before {
    height: 185px;
    margin-bottom: 30px;
  }
  #sec2 .txt {
    width: 900px;
    margin: 66px auto 0;
    text-align: center;
  }
  #sec2 .img {
    margin-top: 70px;
  }
}
@media only screen and (min-width: 1500px) {
  #sec2 {
    margin: 0 150px;
  }
}

#sec3 {
  margin-top: 15vw;
  padding: 15vw 0;
  background: url("../img/english/s3-bg.jpg") center/cover no-repeat;
}
#sec3 .set {
  margin-top: 10vw;
}
#sec3 .set .col {
  margin: 10vw auto 0;
  color: #fff;
  padding: 8vw 4vw;
  box-sizing: border-box;
}
#sec3 .set .col .num {
  opacity: 0.4;
  font-size: 8.4vw;
  letter-spacing: 0.05em;
  line-height: 9vw;
  border-bottom: 1px solid;
  display: table;
  margin: 0 auto 6vw;
}
#sec3 .set .col .sttl {
  font-size: 6vw;
  line-height: 9vw;
  letter-spacing: 0.15em;
  text-align: center;
}
#sec3 .set .col .txt {
  margin-top: 5vw;
  letter-spacing:0;

}
@media only screen and (min-width: 768px) {
  #sec3 {
    margin-top: 140px;
    padding: 143px 0 154px;
  }
  #sec3 .set {
    width: 1000px;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    margin: 63px auto 0;
  }
  #sec3 .set .col {
    width: 397px;
    margin: 38.5px 46px;
    padding: 49px 30px 89px;
    box-sizing: border-box;
  }
  #sec3 .set .col .num {
    opacity: 0.4;
    font-size: 40px;
    line-height: 45px;
    margin-bottom: 43px;
    padding: 0 6px;
  }
  #sec3 .set .col .sttl {
    font-size: 28px;
    line-height: 42px;
  }
  #sec3 .set .col .txt {
    margin-top: 68px;
  }
}

#sec4 .set-style {
  width: 88%;
  max-width: 1270px;
  margin: 10vw auto 0;
  padding: 10vw 4vw;
  box-sizing: border-box;
  border: 2px solid #000035;
}
#sec4 .set-style .ttl {
  padding-bottom: 4vw;
  border-bottom: 1px solid #000035;
  font-size: 18px;
  letter-spacing: 0.15em;
  text-align: center;
}
#sec4 .set-style .txt {
  margin-top: 5vw;
  letter-spacing:0;

}
#sec4 .set-style + .set-style {
  margin-top: 5vw;
}
#sec4 .blk1 {
  padding: 15vw 0;
}
#sec4 .blk2 {
  padding: 15vw 0;
  background: url("../img/english/s4-bg.jpg") center/cover no-repeat;
}
#sec4 .blk2 .set .ttl {
  padding: 3vw;
  box-sizing: border-box;
  background: #353e47;
  font-size: 5vw;
  letter-spacing: 0;
  text-align: center;
  color: #fff;
}
#sec4 .blk2 .set .txtbox {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: center;
      justify-content: center;
  padding: 5vw 3vw;
  box-sizing: border-box;
  background: #f1f1f1;
  font-size: 14px;
  letter-spacing: 0;
}
#sec4 .mark{
  display: flex;
  justify-content: center;
}


@media only screen and (min-width: 768px) {
  #sec4 h2.md_ttl {
    line-height: 60px;
  }
  #sec4 .set-style {
    display: -ms-flexbox;
    display: flex;
    margin-top: 67px;
    padding: 24px 50px 21px;
    border-width: 3px;
  }
  #sec4 .set-style .ttl {
    width: 345px;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
        align-items: center;
    padding: 0;
    border-bottom: 0;
    border-right: 1px solid #000035;
    font-size: 28px;
    line-height: 45px;
    text-align: left;
  }
  #sec4 .set-style .txt {
    width: calc(100% - 345px);
    min-height: 205px;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
        align-items: center;
    margin-top: 0;
    padding: 42px 0 43px 50px;
    box-sizing: border-box;
    box-sizing: border-box;
    display: block;
  }
  #sec4 .set-style + .set-style {
    margin-top: 50px;
  }
  #sec4 .blk1 {
    padding: 129px 0 128px;
  }
  #sec4 .blk2 {
    padding: 98px 0;
  }
  #sec4 .blk2 .set {
    width: 730px;
    margin: 0 auto;
  }
  #sec4 .blk2 .set .ttl {
    padding: 33px 20px 28px;
    font-size: 30px;
    letter-spacing: 0.1em;
  }
  #sec4 .blk2 .set .txtbox {
    padding: 50px 20px 54px;
    font-size: 22px;
    line-height: 55px;
    letter-spacing: 0.1em;
  }
  #sec4 .mark{
    justify-content: initial;
  }
  
}
@media only screen and (min-width: 1500px) {
  #sec4 .set-style {
    width: calc(100% - 230px);
    padding-left: 130px;
    padding-right: 120px;
  }
  #sec4 .set-style .txt {
    padding-left: 69px;
  }
}

#sec5 {
  padding: 15vw 0;
}
#sec5 h2.ttl::before {
  content: "";
  width: 1px;
  height: 15vw;
  display: block;
  margin: 0 auto 3vw;
  background: #fff;
}
#sec5 .set {
  padding: 0 4vw 10vw;
  box-sizing: border-box;
}
#sec5 .set .txt {
  margin-top: 5vw;
  letter-spacing:0;

}
#sec5 .set .btn-mail {
  margin-top: 5vw;
}
#sec5 .set .btn-mail a {
  width: 100%;
  max-width: 350px;
  min-height: 45px;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: center;
      justify-content: center;
  background: #fff;
  font-weight: 300;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: #000035;
}
#sec5 .set .btn-mail a::after {
  content: ">";
  display: inline-block;
  margin-left: 15px;
  font-size: 20px;
}
#sec5 .set .btn-mail a img {
  width: 26px;
  margin-right: 15px;
}
#sec5 .set .btn-mail a:hover {
  text-decoration: none;
  opacity: 0.7;
}
@media only screen and (min-width: 768px) {
  #sec5 {
    padding: 115px 0 132px;
  }
  #sec5 h2.ttl::before {
    height: 61px;
    margin-bottom: 10px;
  }
  #sec5 .set {
    width: 938px;
    margin: 0 auto;
    padding: 0 20px 69px;
    text-align: center;
  }
  #sec5 .set .txt {
    width: 580px;
    margin: 21px auto 0;
  }
  #sec5 .set .btn-mail {
    margin-top: 50px;
  }
  #sec5 .set .btn-mail a {
    min-height: 60px;
    font-size: 20px;
  }
  #sec5 .set .btn-mail a::after {
    font-size: 22px;
  }
  #sec5 .set .btn-mail a img {
    width: auto;
  }
}

#sec6 {
  padding: 15vw 0;
  color: #fff;
  position: relative;
  z-index: 0;
}
#sec6::before {
  content: "";
  background: #353e47;
  transform: skewY(-6deg);
  position: absolute;
  top: 0;
  bottom: -200px;
  left: 6vw;
  right: 0;
  z-index: -1;
}
#sec6 .wrap {
  padding-left: 12vw;
  box-sizing: border-box;
}
#sec6 h3.md_ttl {
  margin-top: 5vw;
  letter-spacing: 0;

}
#sec6 .qabox {
  padding: 5vw 0;
  border-bottom: 1px solid;
  font-weight: 300;
}
#sec6 .qabox .question::before {
  content: "Q.";
  display: inline-block;
  font-family: "Noto Serif JP", serif;
  font-weight: 300;
  /* font-size: 18px; */
  letter-spacing: 0;
}
#sec6 .qabox .answer {
  margin-top: 5vw;
}
#sec6 .qabox .answer::before {
  content: "A.";
  display: inline-block;
  font-family: "Noto Serif JP", serif;
  font-weight: 300;
  /* font-size: 18px; */
  letter-spacing: 0;
}
#sec6 .btn-mail {
  margin-top: 10vw;
  text-align: center;
}
#sec6 .btn-mail a {
  width: 100%;
  max-width: 305px;
  min-height: 45px;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: center;
      justify-content: center;
  background: #fff;
  font-weight: 500;
  color: #000;
}
#sec6 .btn-mail a::after {
  content: ">";
  display: inline-block;
  margin-left: 15px;
}
#sec6 .btn-mail a img {
  width: 20px;
  height: auto;
  margin-right: 15px;
}
#sec6 .btn-mail a:hover {
  text-decoration: none;
  opacity: 0.7;
}
@media only screen and (min-width: 768px) {
  #sec6 {
    padding: 171px 0 144px;
  }
  #sec6::before {
    left: calc(50vw - 500px);
  }
  #sec6 .wrap {
    padding-left: 150px;
  }
  #sec6 h2.lg_ttl {
    font-size: 70px;
  }
  #sec6 h3.md_ttl {
    margin-top: 50px;
  }
  #sec6 .qabox {
    padding: 29px 0 27px;
  }
  #sec6 .qabox .question::before {
    font-size: 20px;
    letter-spacing: 0.1em;

  }
  #sec6 .qabox .answer {
    margin-top: 20px;
  }
  #sec6 .qabox .answer::before {
    font-size: 20px;
    letter-spacing: 0.1em;

  }
  #sec6 .btn-mail {
    margin-top: 95px;
  }
  #sec6 .btn-mail a {
    min-height: 50px;
  }
  #sec6 .btn-mail a img {
    width: 26px;
  }
  #sec6 .set {
    margin-top: 52px;
  }
}