/*-------------------------------
---Common
-------------------------------*/

article .lead {
  font-size: 1.6rem;
  line-height: 2;
  text-align: center;
}


/*-------------------------------
---.introduction
-------------------------------*/

.introduction {
  max-width: 72rem;
  margin: 5rem auto;
}

.introduction .page_title {
  max-width: 58.5rem;
  margin-bottom: 1.5rem;
  margin-left: auto;
  margin-right: auto;
}


/*-------------------------------
---.bels-star
-------------------------------*/

.bels-star {
  max-width: 80rem;
  margin-bottom: 6rem;
  margin-left: auto;
  margin-right: auto;
}

.bels-star .title_wrap {
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) 4.25fr;
  align-items: center;
  grid-gap: 1.5rem 2.25%;
  margin-bottom: 3rem;
}

.bels-star .title_wrap .logo {
  grid-column: 1/2;
  grid-row: 1/3;
}

.bels-star .title_wrap .star_title {
  max-width: 54rem;
}

.bels-star .title_wrap .star_txt {
  font-size: 1.3rem;
}

.bels-star .star_table {
  width: 100%;
  font-size: 1.5rem;
  font-weight: 500;
}

.bels-star .star_table .star {
  display: inline-block;
  width: 1.25em;
  line-height: 1;
}

.bels-star .star_table th,
.bels-star .star_table td {
  height: 5rem;
  vertical-align: middle;
  border: 1px solid;
}

.bels-star .star_table th {
  padding-left: 7.5%;
  padding-right: 7.5%;
}

.bels-star .star_table td {
  padding-left: 5%;
  padding-right: 5%;
}

.bels-star .star_table thead th {
  letter-spacing: 0.25em;
  background-color: #FDD000;
  border-color: #fff;
}

.bels-star .star_table thead th:nth-child(1) {
  width: 35%;
}

.bels-star .star_table tbody th,
.bels-star .star_table tbody td {
  text-align: left;
  border-color: #000;
}

.bels-star .star_table tbody tr:nth-child(odd) th,
.bels-star .star_table tbody tr:nth-child(odd) td {
  background-color: #FFFCD1;
}

.bels-star .star_table tbody tr:nth-child(1) {
  font-size: 2rem;
}

.bels-star .star_table tbody tr:nth-child(1) td {
  position: relative;
  font-weight: bold;
  padding-right: calc(4% + 15rem);
}

.bels-star .star_table .speech-balloon {
  position: absolute;
  top: 20%;
  right: 5%;
  transform: translate(0, -50%);
  -webkit-transform: translate(0, -50%);
  -ms-transform: translate(0, -50%);
  width: 15rem;
}


/*-------------------------------
---.bei
-------------------------------*/

.bei {
  max-width: 92rem;
  background-color: #EDEDED;
  border-radius: 2rem;
  padding-top: 5rem;
  padding-left: 10%;
  padding-right: 10%;
  margin-bottom: 7rem;
  margin-left: auto;
  margin-right: auto;
}

.bei .bei_title {
  max-width: 46.2rem;
  margin-bottom: 4rem;
  margin-left: auto;
  margin-right: auto;
}

.bei .lead {
  margin-bottom: 4.5rem;
}

.bei .formula {
  position: relative;
  margin-bottom: 2rem;
}

.bei .formula .formula_txt {
  background-color: #fff;
  padding: 2.75%;
}

.bei .formula .character {
  position: absolute;
  z-index: var(--z-index-low);
}

.bei .formula .teacher {
  right: -11.75%;
  bottom: -5%;
  width: 25%;
}

.bei .formula .teacher .illustration {
  width: 44%;
  margin-top: -15%;
  margin-left: auto;
}

.bei .formula .teacher .speech-balloon {
  width: 86%;
}

.bei .formula .student {
  left: -10%;
  top: 67%;
  width: 34%;
}

.bei .formula .student .illustration {
  width: 29%;
  margin-top: -13%;
}

.bei .formula .student .speech-balloon {
  width: 88%;
  margin-left: auto;
}

.bei .formula .caution {
  font-size: 1.1rem;
  font-weight: 500;
  text-align: right;
  margin-top: 1em;
}


/*-------------------------------
---.zeh
-------------------------------*/

.zeh {
  margin-bottom: 1.5rem;
}

.zeh .title_wrap {
  position: relative;
  max-width: 75rem;
  margin-bottom: 5.5%;
  margin-left: auto;
  margin-right: auto;
}

.zeh .title_wrap .wrap_inner {
  display: grid;
  grid-template-columns: 1fr 2.24fr;
  align-items: center;
  grid-gap: 5%;
  margin-right: 15%;
}

.zeh .title_wrap .illustration {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 100%;
  padding-left: 87.5%;
}

.zeh .title_wrap .illustration.scrollin .hop {
  animation: hop 2s 2s linear infinite;
}

.zeh .lead {
  max-width: 70rem;
  margin-left: auto;
  margin-right: auto;
}

.zeh .housing {
  position: relative;
  right: -2%;
  max-width: 89.5rem;
  margin-bottom: 7.5rem;
  margin-left: auto;
  margin-right: auto;
}

.zeh .feature {
  max-width: 92rem;
  background-color: #8CD2F5;
  border-radius: 2rem;
  padding: 7rem 10%;
  margin-left: auto;
  margin-right: auto;
}

.zeh .feature .tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(auto, 32rem));
  grid-template-rows: 6rem;
  grid-auto-rows: max-content;
  justify-content: center;
  grid-gap: 2rem;
  padding-left: 2rem;
  padding-right: 2rem;
}

.zeh .feature .tabs .item {
  position: relative;
  z-index: var(--z-index-low);
  text-align: center;
  cursor: pointer;
  padding: 2rem 15% 1.75rem;
}

.zeh .feature .tabs .item::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  display: block;
  width: 100%;
  height: 100%;
  clip-path: polygon(0% 100%, 100% 100%, 85% 10%, 83% 3%, 80% 0%, 20% 0%, 17% 3%, 15% 10%);
  -webkit-clip-path: polygon(0% 100%, 100% 100%, 85% 10%, 83% 3%, 80% 0%, 20% 0%, 17% 3%, 15% 10%);
  background-color: #717071;
  transition: 0.3s;
}

.zeh .feature .tabs .item.current::after {
  background-color: #89B828;
}

.zeh .feature .tabs .item img {
  height: 100%;
  vertical-align: top;
}

.zeh .feature .data_wrap {
  background-color: #fff;
  border: 3px solid #89B828;
  border-radius: 2rem;
  padding: 5rem 7%;
}

.zeh .feature .data:not(.current) {
  display: none;
}

.zeh .feature .data.terms .diagram {
  max-width: 50rem;
  margin-bottom: 4rem;
  margin-left: auto;
  margin-right: auto;
}

.zeh .feature .data.terms .terms_list {
  display: grid;
  grid-template-columns: 1fr;
  grid-gap: 2rem;
  margin-left: 1.5em;
}

.zeh .feature .data.terms .terms_list li::before {
  content: '\025cf';
  color: #717071;
  padding-right: 0.5em;
  margin-left: -1.5em;
}

.zeh .feature .data.merit .merit_list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: max-content;
  grid-gap: 3.5rem;
}

.zeh .feature .data.merit .merit_list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: max-content;
  grid-gap: 2rem;
}

.zeh .feature .data.merit .merit_list li {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: max-content 1fr;
  grid-gap: 1.5rem;
}

.zeh .feature .data.merit .merit_list li dl {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto max-content;
  align-items: center;
  grid-gap: 1rem;
  font-weight: bold;
  text-align: center;
}

.zeh .feature .data.merit .merit_list li dt {
  font-size: 1.6rem;
  line-height: 1.2;
}

.zeh .feature .data.merit .merit_list li dd {
  font-size: 1.2rem;
}

.zeh .feature .data.merit .merit_list li dl span {
  display: inline-block;
}