#mainbgbox {
  background: -webkit-gradient(linear, left top, right top, from(#79bbde), to(#c9dde5));
  background: linear-gradient(90deg, #79bbde 0%, #c9dde5 100%);
  aspect-ratio: 1900/654;
}
.bgbox {
  background: #E1F3FC;
}

section h3 {
  margin-bottom: 20px;
  font-size: 37px;
  font-weight: bold;
  text-align: center;
}
section p.readtxt {
  font-size: 18px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.bacecontentsbox {
  display: -ms-grid;
  display: grid;
  -ms-grid-columns: 200px 60px 1fr;
  grid-template-columns: 200px 1fr;
  -webkit-column-gap: 60px;
     -moz-column-gap: 60px;
          column-gap: 60px;
  padding-top: 60px;
  max-width: 1200px;
  margin: 0 auto;
}
.bacecontentsbox .bacenav .navbox {
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  position: sticky;
  top: 100px;
}
.bacecontentsbox .bacenav .navbox ul li {
  text-align: left;
  margin-bottom: 10px;
  position: relative;
  padding-left: 20px;
}
.bacecontentsbox .bacenav .navbox ul li:before {
  content: "";
  width: 10px;
  height: 1px;
  background-color: #15B5AA;
  position: absolute;
  left: 0;
  top: 13px;
}

.overbox h4 {
  padding: 20px 20px 20px 60px;
  border-radius: 10px;
  text-align: left;
  color: #fff;
  font-size: 30px;
  margin-bottom: 10px;
  background-color: #5991B2;
}
.overbox .contentsbox {
  background-color: #fff;
  padding: 40px 40px;
  border-radius: 10px;
}

#section02 table {
  border-top: 1px #B3B3B3 solid;
}
#section02 table th {
  border-bottom: 1px #B3B3B3 solid;
  padding: 20px;
  font-weight: normal;
  text-align: left;
  width: 12em;
}
#section02 table th.lastbox {
  border-bottom: none;
}
#section02 table td {
  border-bottom: 1px #B3B3B3 solid;
  padding: 20px;
  text-align: left;
}
#section02 table td.lastbox {
  border-bottom: none;
}
#section02 .flowbox {
  padding: 20px;
  text-align: center;
  position: relative;
  margin-bottom: 20px;
}
#section02 .flowbox span {
  color: #fff;
}
#section02 .flowbox.flow01:after, #section02 .flowbox.flow02:after {
  content: "";
  width: 20px;
  height: 20px;
  border-top: 0;
  border-right: 0;
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
  -webkit-transform-origin: bottom left;
          transform-origin: bottom left;
  position: absolute;
  left: 50%;
  bottom: -12px;
}
#section02 .flowbox.flow01 {
  background-color: #5979B2;
}
#section02 .flowbox.flow01:after {
  background-color: #5979B2;
}
#section02 .flowbox.flow02 {
  background-color: #8DA3CA;
}
#section02 .flowbox.flow02:after {
  background-color: #8DA3CA;
}
#section02 .flowbox.flow03 {
  background-color: #5979B2;
}

#section03 h5 {
  background-color: #B7E4EA;
  padding: 20px 20px 20px 60px;
  border-radius: 10px;
  color: #5991B2;
  font-weight: bold;
  font-size: 20px;
  position: relative;
}
#section03 h5:after {
  content: "";
  background-color: #5991B2;
  width: 12px;
  height: 12px;
  border-radius: 30px;
  position: absolute;
  left: 30px;
  top: 25px;
}
#section03 .qabox {
  margin-bottom: 80px;
}
#section03 .qabox .js-accordion dt.dt_q {
  background-color: #7DB0C5;
  border-radius: 10px;
  padding: 20px 20px 20px 60px;
  color: #fff;
  font-size: 19px;
  font-weight: bold;
  text-align: left;
  position: relative;
  margin-top: 20px;
}
#section03 .qabox .js-accordion dt.dt_q:after, #section03 .qabox .js-accordion dt.dt_q:before {
  content: "";
  position: absolute;
  right: 1.25em;
  top: 1.25em;
  width: 1px;
  height: 1em;
  background-color: #fff;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
#section03 .qabox .js-accordion dt.dt_q:after {
  -webkit-transform: rotate(90deg);
          transform: rotate(90deg);
}
#section03 .qabox .js-accordion dt.dt_q.active:before {
  -webkit-transform: rotate(90deg);
          transform: rotate(90deg);
}
#section03 .qabox .js-accordion dt.dt_q span:before {
  content: "Q";
  font-size: 20px;
  position: absolute;
  left: 30px;
  top: 50%;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  font-family: "Cambria", sans-serif;
}
#section03 .qabox .js-accordion dd.dd_a {
  text-align: left;
  display: none;
  padding: 40px;
  line-height: 1.8;
}
#section03 .qabox .js-accordion dd.dd_a .innerflexbox {
  display: -ms-grid;
  display: grid;
  -ms-grid-columns: 8em 1fr;
  grid-template-columns: 8em 1fr;
}
#section03 .qabox .js-accordion dd.dd_a .innerflexbox .txt02 dl dt {
  width: 4em;
  float: left;
}
#section03 .qabox .js-accordion dd.dd_a .innerflexbox .txt02 dl dd {
  padding-left: 4em;
}

@media screen and (max-width: 842px) {
  .sectioninner {
    width: 90vw;
  }
  section h3 {
    font-size: 24px;
  }
  #mainbgbox {
    aspect-ratio: 751/560;
  }
  #mainbgbox .h2box {
    bottom: 30px;
    left: 20px;
  }
  #mainbgbox .h2box img {
    height: 30px;
  }
  #mainbgbox .h2box h2 {
    font-size: 28px;
  }
  .overbox h4 {
    font-size: 24px;
    padding: 10px;
    margin-bottom: 0;
    text-align: center;
  }
  .overbox .contentsbox {
    padding: 20px;
    border-radius: 0;
  }
  .bacecontentsbox {
    -ms-grid-columns: 1fr;
    grid-template-columns: 1fr;
  }
  .bacecontentsbox .bacenav {
    display: none;
  }
  .bacecontentsbox .bacecontents {
    width: 90vw;
    margin: 0 auto;
  }
  #section02 table {
    font-size: 14px;
  }
  #section02 table th {
    width: 6em;
    padding: 10px;
  }
  #section02 table td {
    padding: 10px;
  }
  #section03 h5 {
    font-size: 18px;
  }
  #section03 h5:after {
    width: 8px;
    height: 8px;
  }
  #section03 .qabox .js-accordion dt.dt_q {
    font-size: 14px;
    padding: 10px 40px 10px 40px;
  }
  #section03 .qabox .js-accordion dt.dt_q span:before {
    font-size: 18px;
    left: 10px;
  }
  #section03 .qabox .js-accordion dd.dd_a {
    font-size: 14px;
    padding: 20px 20px 20px 40px;
  }
  #section03 .qabox .js-accordion dd.dd_a .innerflexbox {
    -ms-grid-columns: 1fr;
    grid-template-columns: 1fr;
  }
}