/* -----------------
main
-------------------- */
.back_btn a {
  display: inline-block;
  position: relative;
  padding: 20px 20px 20px 35px;
  font-family: "Helvetica Neue", "Helvetica", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Arial", "Yu Gothic", "Meiryo", sans-serif;
  font-weight: 600;
  font-size: 1.6rem;
  line-height: 1;
  color: #606060;
  border-bottom: 2px solid #f2f2f2;
  transition: .3s;
}

.back_btn a::before {
  display: inline-block;
  position: absolute;
  top: 50%;
  left: 20px;
  content: '';
  width: 16px;
  height: 16px;
  border-top: 1px solid #606060;
  border-left: 1px solid #606060;
  transform: translateY(-50%) rotate(-45deg);
}

.back_btn a:hover,
.back_btn a:active,
.back_btn a:focus {
  background: rgba(0, 102, 255,.12);
  border-bottom: 2px solid #0066ff;
}



/* -----------------
cont_wrap
-------------------- */
#cont_wrap {
  padding-bottom: 75px;
}

#cont_wrap a {
  display: block;
}

#cont_wrap img {
  width: 100%;
}

#cont_wrap .lead {
  font-weight: 700;
  font-size: 1.8rem;
  line-height: 1.555;
  letter-spacing: .05em;
  margin-top: 25px;
}

#cont_wrap .img02 {
  margin-top: 45px;
  height: 240px;
  overflow: hidden;
}

#cont_wrap .ttl {
  font-weight: 700;
  font-size: 2.6rem;
  line-height: 1.1923;
  letter-spacing: .05em;
  text-indent: .05em;
  color: #005BAC;
  text-align: center;
  margin: 100px 0 30px;
}

#cont_wrap .list {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

#cont_wrap .relation_list li {
  width: 310px;
}

#cont_wrap .pdf_list::before,
#cont_wrap .pdf_list::after {
  content:"";
  width: 23.828125%;
}

#cont_wrap .pdf_list::before {
  order: 1;
}

#cont_wrap .pdf_list li {
  margin-bottom: 40px;
  width: 23.828125%;
}

@media screen and (max-width: 850px) {
  #cont_wrap {
    padding-bottom: 100px;
  }
  
  #cont_wrap .lead {
    font-size: 1.4rem;
  }

  #cont_wrap .img02 {
    margin-top: 30px;
    height: 23.733333333vw;
  }

  #cont_wrap .ttl {
    font-size: 2rem;
    margin: 50px 0 30px;
  }

  #cont_wrap .relation_list {
    display: block;
  }

  #cont_wrap .relation_list li {
    margin: 15px auto 0;
    width: 100%;
    max-width: 500px;
  }

  #cont_wrap .pdf_list::before,
  #cont_wrap .pdf_list::after {
    display: none;
  }

  #cont_wrap .pdf_list li {
    margin-bottom: 5%;
    width: 48.5%;
  }
}

.close {
  position: relative;
}

.close::before {
  position: absolute;
  top: -20px;
  left: -20px;
  display: block;
  width: calc(100% + 40px);
  height: calc(100% + 40px);
  content: '';
  background: rgba(0,0,0,0.5);
}

.close::after {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  content: '開催終了';
  font-size: 30px;
  font-weight: 600;
  color: #ffffff;
}

@media screen and (max-width: 850px) {
  .close::before {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
  .close::after {
    font-size: 24px;
  }
}