header .h_inner .logo a svg path {
  fill: #113366;
}
header .h_inner .hamburger span {
  background-color: #113366;
}
header .h_inner .nav_container nav ul li a {
  color: #113366;
}

.under_mv {
  background: url(../../img/teaching/bg_mv.jpg) no-repeat center/cover;
  padding-top: 166px;
  padding-bottom: 85px;
  text-align: center;
}
.under_mv .mv_ttl {
  font-weight: bold;
  color: #113366;
  font-size: 34px;
}
.under_mv .pic {
  margin-top: 30px;
}
.under_mv .desc {
  margin-top: 32px;
  font-weight: 500;
  font-size: 16px;
}

.about_section .detail_wrap {
  background: url(../../img/teaching/bg_grade.jpg) no-repeat center/cover;
  padding-top: 100px;
  padding-bottom: 390px;
}
.about_section .detail_wrap .content_wrap {
  width: 828px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  gap: 100px;
}
.about_section .detail_wrap .content_wrap .txt_box {
  width: 440px;
  color: #fff;
}
.about_section .detail_wrap .content_wrap .txt_box .content_ttl {
  font-size: 28px;
  font-weight: bold;
}
.about_section .detail_wrap .content_wrap .txt_box .desc {
  margin-top: 30px;
}
.about_section .new_box {
  background-color: #fff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  padding: 80px 100px 94px;
  width: 1100px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  top: -300px;
}
.about_section .new_box .new_heading {
  font-size: 28px;
  font-weight: bold;
  letter-spacing: 0.05em;
  padding-left: 14px;
  line-height: 1.2;
  position: relative;
}
.about_section .new_box .new_heading::before {
  content: "";
  display: block;
  width: 2px;
  height: 21px;
  background: linear-gradient(90deg, #3973C2 0%, #00439D 100%);
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}
.about_section .new_box ul {
  margin-top: 80px;
  display: flex;
  flex-wrap: wrap;
  gap: 40px 28px;
}
.about_section .new_box ul li {
  width: 280px;
}
.about_section .new_box ul li .ph {
  box-shadow: 0 4px 4px rgba(0, 0, 0, 0.25);
}
.about_section .new_box ul li .lead {
  line-height: 1.4;
  font-size: 16px;
  color: #113366;
  font-weight: bold;
  text-align: center;
  margin-top: 18px;
}
.about_section .new_box ul li .desc {
  margin-top: 20px;
}
.about_section .new_box .btn_arrow {
  margin-top: 40px;
  text-align: center;
}
.about_section .new_box .btn_arrow a {
  font-size: 16px;
}
.about_section .bg_lightblue {
  background: url(../../img/teaching/bg_lightblue.jpg) no-repeat center/cover;
  padding-bottom: 96px;
}
.about_section .customize {
  text-align: center;
  margin-top: -180px;
}
.about_section .customize .customize_heading {
  font-size: 28px;
  font-weight: bold;
}
.about_section .customize .desc {
  font-weight: 500;
  margin-top: 25px;
}
.about_section .customize .btn_arrow {
  margin-top: 25px;
}
.about_section .customize .btn_arrow a {
  font-size: 16px;
}

@media screen and (max-width: 767px) {
  .under_mv {
    padding-top: 85px;
    padding-bottom: 53px;
  }
  .under_mv .mv_ttl {
    font-size: 24px;
  }
  .under_mv .pic {
    margin-top: 28px;
    width: 313px;
    margin-left: auto;
    margin-right: auto;
  }
  .under_mv .desc {
    margin-top: 32px;
    font-size: 15px;
  }
  .about_section .detail_wrap {
    background-image: url(../../img/teaching/bg_grade_sp.jpg);
    padding: 60px 13px 223px;
  }
  .about_section .detail_wrap .content_wrap {
    flex-direction: column-reverse;
    width: 100%;
    gap: 40px;
  }
  .about_section .detail_wrap .content_wrap .txt_box {
    width: 100%;
  }
  .about_section .detail_wrap .content_wrap .txt_box .content_ttl {
    font-size: 22px;
  }
  .about_section .detail_wrap .content_wrap .img_box {
    width: 288px;
    margin-left: auto;
    margin-right: auto;
  }
  .about_section .new_box {
    width: 100%;
    padding: 25px 25px 35px;
    top: -143px;
  }
  .about_section .new_box .new_heading {
    font-size: 22px;
  }
  .about_section .new_box ul {
    flex-direction: column;
    margin-top: 24px;
    gap: 30px;
  }
  .about_section .new_box ul li {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
  }
  .about_section .new_box ul li .lead {
    margin-top: 15px;
  }
  .about_section .new_box ul li .desc {
    margin-top: 15px;
  }
  .about_section .bg_lightblue {
    padding-bottom: 70px;
    background-image: url(../../img/teaching/bg_lightblue.jpg);
    padding-left: 20px;
    padding-right: 20px;
  }
  .about_section .customize {
    padding-left: 25px;
    padding-right: 25px;
    text-align: left;
    margin-top: -70px;
  }
  .about_section .customize .customize_heading {
    font-size: 20px;
  }
  .about_section .customize .btn_arrow {
    text-align: center;
  }
}