.marker {
  display: inline;
  background: linear-gradient(transparent 50%, #ffee009e 50%);
  background-repeat: no-repeat;
  background-size: 0% 100%;
  transition: background-size 1.5s;
}

.marker.is-inview {
  background-size: 100% 100%;
}

#contents {
  padding: 0 0 4rem;
}

.sec {
  margin-top: 60px;
}

#tit_wrap h2 {
  position: relative;
  text-align: center;
  color: #00336a;
  font-size: 52px;
  font-weight: bold;
  padding: 16px 0;
  border-top: 3px solid #00336a;
  border-bottom: 3px solid #00336a;
  line-height: 1.2;
}

#tit_wrap h2 span {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: 0px;
  font-size: 14px;
  text-align: left;
  text-indent: -1em;
  color: red;
  font-weight: 500;
  line-height: 1.4;
}

.btn {
  display: block;
  margin: 30px auto;
  padding: 24px 0;
  width: 100%;
  max-width: 400px;
  background-color: #00336a;
  font-size: 20px;
  color: #fff;
  text-align: center;
  transition: all .6s;
}

.bnrArea01 {
  margin: 60px auto;
  text-align: center;
}

.bnrArea01 a {
  display: block;
  width: 85%;
  max-width: 360px;
  margin: 0 auto;
}

.bnrArea01 a img {
  width: 100%;
  height: auto;
}

.txt_02 {
  margin-top: 24px;
  color: #00336a;
  font-size: 16px;
  text-align: center;
}

.txt_03 {
  color: #00336a;
  font-size: 16px;
}

.mov-wrap {
  width: 95%;
  max-width: 800px;
  margin: 40px auto 0 auto;
}

.mov-wrap h3 {
  font-size: 26px;
  font-weight: 700;
  color: #00336a;
  margin-bottom: 8px;
}

.mov-wrap .video-container {
  position: relative;
  width: 100%;
  height: 450px;
  border: 5px solid #00336a;
  box-sizing: border-box;
  cursor: pointer;
}

.mov-wrap .video-cover {
  position: absolute;
  top: 0;
  left: 0%;
  width: 100%;
  height: 100%;
  background-color: #00000099;
  z-index: 2;
}

.mov-wrap .video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: auto;
  z-index: 3;
}

.mov-wrap dl {
  margin-top: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  cursor: pointer;
}

.mov-wrap dt {
  color: #fff;
  background-color: #00336ae6;
  min-width: 300px;
  text-align: center;
  font-size: 20px;
}

.mov-wrap dd {
  background-color: #00336A;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  width: 40px;
  height: 40px;
}

.mov-wrap dd img {
  width: 100%;
  height: auto;
}

.openCampus h3 {
  font-size: 26px;
  color: #00336a;
  margin-top: 30px;
  margin-bottom: 8px;
}

.openCampus__wrap {
  margin-top: 24px;
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 24px;
}

.openCampus__day {
  width: calc((100% - 48px) / 3);
  display: flex;
  align-items: flex-end;
  gap: 4px;
}

.openCampus__wrap.teacher .openCampus__day {
  width: 100%;
  align-items: flex-start;
}

.openCampus__wrap.teacher .openCampus__day ul {
  transform: translateY(25px);
}

.openCampus__wrap.teacher .openCampus__day ul li:not(:last-child) {
  margin-bottom: 4px;
}

.openCampus__day strong {
  font-size: 300%;
  color: #00336a;
  transform: translateY(14px);
  min-width: 105px;
}

.openCampus .caution {
  display: block;
  margin-top: 4px;
  font-size: 14px;
}

.openCampus .btn {
  margin-top: 40px;
}

.qa dl {
  margin-top: 30px;
}

.qa dt {
  position: relative;
  margin-bottom: 8px;
  padding-right: 50px;
  padding-bottom: 8px;
  border-bottom: 1px solid #333;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  text-indent: -2.2em;
  padding-left: 2.2em;
}

.qa dt::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background-image: url("../img/icon_plus.svg");
  transition: all .6s;
}

.qa dt.active::after {
  transform: translateY(-50%) rotate(45deg);
}

.qa dd {
  display: none;
}

.qa dt span,
.qa dd span {
  font-size: 160%;
  font-weight: 700;
  transform: translateY(4px);
  margin-right: 8px;
}

.qa dt span {
  color: #00336A;
}

.qa dd span:not(.small) {
  color: rgb(218, 54, 54);
}

.qa dd .small {
  font-size: 80%;
  font-weight: 400;
}

.qa h4 {
  margin-top: 60px;
  color: #00336a;
  font-size: 24px;
  font-weight: 700;
  text-align: center;
}

.remodal iframe {
  width: 100%;
  height: 470px;
}

@media screen and (max-width: 599px) {

  .container {
    width: 95%;
    margin: 0 auto;
  }

  .btn {
    font-size: 16px;
  }

  .txt_02 {
    text-align: left;
  }

  #mainTitle {
    font-size: 140%;
  }

  #tit_wrap h2 {
    font-size: 170%;
  }

    #tit_wrap h2 span {
    position: relative;
    display: block;
    top: auto;
    right: auto;
    transform: translateY(0);
    margin-top: 10px;
    padding: 0 1em 0 2em;
  }

  .openCampus__wrap {
    margin-top: 0;
    flex-wrap: wrap;
    gap: 16px;
  }

  .openCampus__day {
    width: 100%;
    justify-content: center;
  }

  .mov-wrap .video-container {
    height: 230px;
  }

  .mov-wrap dt {
    font-size: 16px;
    padding: 4px 0;
    min-width: 270px;
  }

  .mov-wrap dd {
    font-size: 20px;
  }

  .openCampus h3,
  .mov-wrap02 h3 {
    font-size: 22px;
  }

  .mov-wrap02 iframe {
    height: 230px;
  }

  .qa dt::after {
    right: 10px;
  }

  .openCampus__day strong {
    font-size: 28px;
    line-height: 1.8em;
  }

  .openCampus__wrap.teacher .openCampus__day {
    width: 100%;
  }
}