.topics_list {
  text-align: left;
  border-bottom: 2px solid #e5e5e5;
  display: none;
}
.topics_list li {
  border-bottom: none;
  border-top: 2px solid #e5e5e5;
}
.topics_list li:first-child {
  border-top: none;
}
.topics_list.open {
  display: block;
}
.topics_list + .col_head02 {
  margin-top: 71px;
}

.toggle_btn {
  position: relative;
  font-size: 1.63rem;
  font-weight: bold;
  letter-spacing: 0.2em;
  line-height: 1.4;
  padding-bottom: 21px;
  margin-top: 74px;
  border-bottom: 2px solid #e5e5e5;
  cursor: pointer;
}
.toggle_btn:before {
  content: "";
  position: absolute;
  background: url(/common/images/ico_toggle_b.svg) no-repeat left top;
  -webkit-background-size: 14px 14px;
          background-size: 14px;
  width: 14px;
  height: 15px;
  right: 22px;
  top: calc(50% - 16px);
}
.toggle_btn.open:before {
  background-position: left bottom;
  -webkit-background-size: 14px 14px;
          background-size: 14px;
  width: 14px;
  height: 10px;
  top: calc(50% - 12px);
}

.topics_listCol {
  border-bottom: 2px solid #dadada;
}
.topics_listCol a {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  padding: 19px 26px 19px;
  letter-spacing: -1em;
  word-spacing: 0.1em;
  font-size: 0;
  -webkit-transition: background-color 0.2s;
  transition: background-color 0.2s;
}
.topics_listCol a:hover {
  background: rgba(237, 199, 192, 0.3);
}

.topics_listColDate {
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
  display: block;
  font-size: 1.13rem;
  letter-spacing: 0.18em;
}

.topics_listColTxt {
  display: block;
  font-size: 1.13rem;
  letter-spacing: 0.12em;
  padding-left: 45px;
  position: relative;
  width: 85%;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.topics_listColTxt:before {
  content: "";
  width: 8px;
  height: 13px;
  background: url(/common/images/ico_ar_r_b.svg) no-repeat left center;
  -webkit-background-size: contain;
          background-size: contain;
  position: absolute;
  left: 17px;
  top: 8px;
}

@media screen and (max-width: 767px) {
  .main {
    padding-bottom: 140px;
  }
  .topics_list {
    border-bottom: 1px solid #e5e5e5;
  }
  .topics_list li {
    border-top: 1px solid #e5e5e5;
  }
  .topics_list + .col_head02 {
    margin-top: 71px;
  }
  .toggle_btn {
    font-size: 0.94rem;
    padding-bottom: 5px;
    margin-top: 20px;
    border-bottom: 1px solid #e5e5e5;
  }
  .toggle_btn:before {
    right: 2px;
    top: calc(50% - 7px);
    width: 10px;
    height: 10px;
    -webkit-background-size: 10px 10px;
            background-size: 10px;
  }
  .toggle_btn.open:before {
    right: 3px;
    top: calc(50% - 3px);
    width: 9px;
    height: 7px;
  }
  .topics_listCol a {
    line-height: 1.5;
    padding: 5px 0 7px;
  }
  .topics_listCol a:hover {
    background: #fff;
  }
  .topics_listColDate {
    font-size: 0.82rem;
    letter-spacing: 0;
  }
  .topics_listColTxt {
    padding-left: 26px;
    font-size: 0.75rem;
  }
  .topics_listColTxt:before {
    width: 4px;
    height: 7px;
    left: 10px;
    top: 7px;
  }
}