@charset "utf-8";

.left-block,.right-block,.left-block2,.right-block2 {
  display: inline-block;
  vertical-align: middle;
  box-sizing: border-box;
}
.left-block {
  width: 59%;
  padding-right: 40px;
}
.right-block {
  width: 40%;
  text-align: right;
}
.left-block2 { width: 49%; }
.right-block2 {
  width: 50%;
  padding-left: 20px;
  line-height: 1.6;
}
.hl-backblue,.hl-backorange,.hl-backgray {
  padding: 15px;
  margin: 0 0 10px 0;
}
.hl-backblue,.hl-backgray { background: #CCECFF; }
.hl-backorange { background: #FFAC80}
.hl-backgray { background: #F2F2F2; }
.hl-backblue h2,.hl-backorange h2,.hl-backgray h3 { font-size: 1.6rem; }
.hl-backblue h2 span,.hl-backorange h2 span {
  font-size: 1rem;
  margin-left: 40px;
  vertical-align: middle;
}
.youtube {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  margin-bottom: 20px;
}
.youtube iframe {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
}
.target, .teacher {
  line-height: 2;
  text-indent: -3em;
  padding-left: 3em;
}

.sem-btn {
  cursor: pointer;
}

@media screen and (max-width: 992px) {
  .left-block,.right-block,.left-block2,.right-block2 {
    width: 100%;
    display: block;
  }
  .left-block { padding-right: 0; }
  .left-block,.right-block {
    text-align: center;
    padding: 10px 0;
  }
  .right-block2 { padding-left: 0; }
  .hl-backblue h2 span {
    display: block;
    margin-left: 0;
    margin-top: 10px;
  }
}

.container-flex {
  display: flex;
  flex-wrap: wrap;
}

#left-pane, #right-pane {
  width: 100%;
}

.accordion-container {
  max-width: 600px;
  margin: 0 auto;
}

details {
  border: 0px solid #ccc;
  border-radius: 20px;
  margin-bottom: 10px;
}

summary {
  display: block;
  font-weight: bold;
  padding: 10px 15px;
  cursor: pointer;
  background-color: #4b6ac7;
  color: #fff;
  border-radius: 20px;
}

.sum_motivation {
  background-color: #f8daff;
  color: #5a3286;
}

.sum_speaking {
  background-color: #e3ffca;
  color: #11734b;
}

.sum_seminar {
  background-color: #ffd6c8;
  color: #b10202;
}

.sum_presentation {
  background-color: #c5e1ff;
  color: #0a53a8;
}

.sum_toeic {
  background-color: #e0f8ff;
  color: #215a6c;
}

.sum_writing {
  background-color: #e5ce90;
  color: #534328;
}

.accordion-content {
  padding: 10px 15px;
  border-top: 0px solid #ccc;
}

details[open] summary {
  opacity: 0.7;
  color: #555;
}

button {
  text-align: left;
  border: 0;
  border-radius: 10px;
  margin: 3px;
}

@media screen and (min-width: 769px) {
  #left-pane {
    width: 25%;
    padding-right: 20px;
  }

  #right-pane {
    width: 75%;
  }
}