@charset "utf-8";
.sub-head_bg{
  background-image: url(/gakuseikai/about/img/head_img.jpg);
}
/* overview */
.about_overview {
  text-align: center;
  padding-bottom: 125px;
}
.about_overview h2 {
  font-size: 40px;
  font-weight: bold;
  display: inline-block;
  border-bottom: 1px dashed #000;
  margin-bottom: 40px;
}
.about_overview p {
  margin-bottom: 65px;
}
.about_overview .mobile-scroll {
  width: 100%;
  height: auto;
  margin-bottom: 10px;
}
.about_overview .mobile-scroll figure {
  width: min(100%,900px);
  margin: 0 auto;
}
/* events */
.about_events {
  padding: 105px 0 120px;
  border-top: 1px solid #000;
  border-bottom: 1px dashed #000;
  border-radius: 80px 80px 0 0;
  background: #e6ddce;
}
.ttl_wh {
  font-size: 80px;
  color: #fff;
  line-height: 1;
  padding-bottom: 20px;
  text-shadow: 1px 1px 0px black, 1px -1px 0px black, -1px 1px 0px black, -1px -1px 0px black, 1px 0px 0px black, 0px 1px 0px black, -1px 0px 0px black, 0px -1px 0px black;
}
.about_events .ttl {
  margin-bottom: 100px;
}
.about_events ul {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 55px 50px;
}
.about_events li {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
}
.about_events li::before {
  content: '';
  display: inline-block;
  width: min(100%, 80px);
  height: min(100%, 56px);
  background: url(/gakuseikai/about/img/events_clip.png) no-repeat center / contain;
  position: absolute;
  left: 50%;
  -webkit-transform: translate(-50%);
      -ms-transform: translate(-50%);
          transform: translate(-50%);
  top: -45px;
}
.about_events li::after {
  content: '';
  display: inline-block;
  width: min(100%, 53px);
  height: min(100%, 53px);
  background: url(/gakuseikai/about/img/events_deco.png) no-repeat center / contain;
  position: absolute;
  right: 0;
  bottom: 0;
}
.about_events li h3 {
  font-size: 50px;
  font-weight: bold;
  color: #fff;
  line-height: 1;
  letter-spacing: .08em;
  background: #f05400;
  border-radius: 20px 20px 0 0;
  padding: 20px 30px;
}
.about_events li h3 span {
  font-size: 20px;
  letter-spacing: .08em;
  padding-left: .9em;
}
.about_events li div {
  background: #fff;
  border-radius: 0 0 20px 20px;
  padding: 40px 40px 60px;
  min-height: 200px;
  -webkit-box-flex: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
}
.about_events li p {
  font-weight: bold;
  border-bottom: 1px dashed #000;
} 
/* members */
.about_members {
  padding: 105px 0 220px;
  background: url(/gakuseikai/about/img/members_deco.png) no-repeat top right / min(30%, 320px);
}
.about_members .ttl {
  text-align: left;
}
.about_members p {
  margin-bottom: 55px;
}
.about_members table {
  width: min(100%, 900px);
  margin: 0 auto;
  border-collapse: separate;
  border: 1px solid #000;
  border-radius: 20px;
  -webkit-box-shadow: 10px 10px 0px 0px rgba(0, 0, 0, 0.6);
          box-shadow: 10px 10px 0px 0px rgba(0, 0, 0, 0.6);
}
.about_members th {
  font-size: 18px;
  font-weight: bold;
  background: #e6e6e6;
  width: 25%;
  padding: 10px;
  border-bottom: 1px dashed #000;
}
.about_members tr:first-child th {
  border-top-left-radius: 20px;
}
.about_members tr:last-child th {
  border-bottom-left-radius: 20px;
  border-bottom: none;
}
.about_members th:last-child {
  border-bottom: none;
}
.about_members td {
  background: #fff;
  text-align: center;
  padding: 10px;
  border-left: 1px dashed #000;
  border-bottom: 1px dashed #000;
}
.about_members tr:last-child td {
  border-bottom: none;
}
/* .about_members td:first-child {
  width: 39%;
} */
.about_members td:last-child {
  width: 45%;
}
.about_members tr:first-child td:last-child {
  border-top-right-radius: 20px;
}
.about_members tr:last-child td:last-child {
  border-bottom-right-radius: 20px;
}
@media only screen and (max-width: 1024px) {
  body {
    min-width: 100%;
  }
  main {
    margin-top: 70px;
  }
  .ttl_wh {
  font-size: 58px;
  padding-bottom: 10px;
  }
  /* overview */
  .about_overview {
    padding-bottom: 60px;
  }
  .about_overview h2 {
    font-size: 28px;
    margin-bottom: 20px;
  }
  .about_overview p {
    margin-bottom: 65px;
  }
  .about_overview .mobile-scroll {
    margin-bottom: 10px;
    padding-bottom: 2px;
    overflow-x: scroll;
  }
  .about_overview .mobile-scroll::-webkit-scrollbar {
    width: 10px;
    height: 3px;
  }
  /* スクロールバーの形を設定する */
  .about_overview .mobile-scroll::-webkit-scrollbar-thumb {
      border-radius: 5px;
  }
  /* スクロールバーの色を設定する */
  .about_overview .mobile-scroll::-webkit-scrollbar-thumb {
      --bg-opacity: 1;
      background-color: #ababab;
  }
  .about_overview .mobile-scroll figure {
      width: 450px;
  }
  /* events */
  .about_events {
    padding: 60px 0 70px;
    border-radius: 60px 60px 0 0;
  }
  .about_events ul {
    grid-template-columns: 1fr 1fr;
  }
  .about_events li::before {
    width: 70px;
    height: 48px;
    top: -38px;
  }
  .about_events li::after {
    width: 43px;
    height: 43px;
  }
  .about_events li h3 {
    font-size: 42px;
    padding: 20px 40px;
  }
  .about_events li h3 span {
    font-size: 18px;
  }
  .about_events .ttl {
    margin-bottom: 80px;
  }
  /* members */
  .about_members {
    padding: 105px 0 130px;
    background: url(/gakuseikai/about/img/members_deco.png) no-repeat top right / max(30%, 150px);
  }
  .about_members p {
    margin-bottom: 45px;
  }
  .about_members th {
    font-size: 16px;
    width: 28%;
  }
  .about_members td:last-child {
    width: 40%;
  }
}
@media only screen and (max-width: 750px) {
  main {
    margin-top: 70px;
  }
  /* events */
  .about_events {
    padding: 60px 0 70px;
    border-radius: 60px 60px 0 0;
  }
  .about_events .events_txt {
    margin-bottom: 80px;
  }
  .about_events ul {
    grid-template-columns: 1fr;
    width: max(100%, 304px);
    margin: 0 auto;
  }
  .about_events li::before {
    width: 70px;
    height: 48px;
    top: -38px;
  }
  .about_events li::after {
    width: 43px;
    height: 43px;
  }
  .about_events li h3 {
    font-size: 42px;
    padding: 10px 30px 15px;
  }
  .about_events li h3 span {
    font-size: 18px;
  }
  .about_events li div {
    padding: 20px 20px 40px;
    height: auto; 
    min-height: 150px;
  }
}



