section.gpu-cluster.conthead h1 ,
section.gpu-cluster.conthead h2 {
 position: relative;
 margin: 60px auto 80px;
 font-size: 32px;
 text-align: center;
}
section.gpu-cluster.conthead h1:after ,
section.gpu-cluster.conthead h2:after {
 content: "";
 position: absolute;
 bottom: -20px;
 left: 0;
 right: 0;
 margin: auto;
 width: 50px;
 height: 3px;
 background: #1650a2;
}

.c-inpageNav {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
}

.c-inpageNav__item {
  flex-grow: 1;
}

.c-inpageNav__item a {
  position: relative;
  display: block;
  padding: 12px 12px 18px 12px;
  height: 100%;
  color: inherit;
  font-size: 18px;
  text-align: center;
  border-right: 1px solid #333;
}

.c-inpageNav__item a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: block;
  width: 0;
  height: 0;
  margin-left: auto;
  margin-right: auto;
  border-style: solid;
  border-width: 7px 5.5px 0 5.5px;
  border-color: #77b900 transparent transparent transparent;
}

.c-inpageNav__item.item_line2 a {
  padding-top: 0;
  padding-bottom: 0;
}

@media (max-width: 640px) {
  .c-inpageNav {
    flex-wrap: wrap;
    margin-left: -20px;
    margin-right: -20px;
  }
  .c-inpageNav__item {
    width: 50%;
    flex-grow: 0;
  }
  .c-inpageNav__item a {
    padding: 10px 10px 16px 10px;
    font-size: inherit;
  }
  .c-inpageNav__item:nth-child(even) a {
    border-right: none;
  }
  .c-inpageNav__item:nth-child(n+3) {
    margin-top: 16px;
  }
}

section.gpu-cluster.contents h3 {
  margin-bottom: 16px;
  font-size: 18px;
}
section.gpu-cluster.contents p {
  margin-bottom: 16px;
}
section.gpu-cluster.contents figure {
  margin-bottom: 16px;
  text-align: center;
}
section.gpu-cluster.contents figure figcaption {
  margin-top: 5px;
}

@media (min-width: 641px) {
  section.gpu-cluster.contents h3 {
    margin-top: 30px;
    font-size: 22px;
  }
  section.gpu-cluster.contents .box_flex {
    display: flex;
    justify-content: space-between;
    gap: 50px;
  }
  section.gpu-cluster.contents .box_flex div {
    width: calc(65% - 50px);
  }
  section.gpu-cluster.contents .box_flex figure {
    width: 35%;
  }
}

/* 概要 */
#overview {
  margin-top: 50px;
}
@media (min-width: 641px) {
  #overview {
    margin-top: 100px;
  }
}
.box_point {
        margin-top: 60px;
}

.box_point > div {
    padding: 30px 15px;
    border-bottom: #707070 1px solid;
}
.box_point > div:last-child {
    border-bottom: none;
}
.box_point > div .point_number {
    margin-bottom: 40px;
    color: #4481AB;
    text-align: center;
    font-size: 18px;
    letter-spacing: 3px;
    line-height: 1;
}
.box_point > div .point_number span {
    position: relative;
    display: inline-block;
    padding: 0 10px 5px;
    color: #4481AB;
    font-size: 60px;
    font-weight: bold;
    border-bottom: #4481AB 3px solid;
}
.box_point > div .point_number span::before {
    content: "";
    display: block;
    position: absolute;
    bottom: -20px;
    right: 30px;
    border-bottom: transparent 20px solid;
    border-right: #4481AB 15px solid;
}
.box_point > div .point_number span::after {
    content: "";
    display: block;
    position: absolute;
    bottom: -13px;
    right: 33px;
    border-bottom: transparent 17px solid;
    border-right: #fff 12px solid;
}
section.gpu-cluster.contents .box_point > div h3 {
    margin-bottom: 30px;
    font-size: 24px;
    line-height: 1.2;
    text-align: center;
}
.box_point > div figure img {
  width: 75%;
}
@media screen and (min-width: 641px) {
    .box_point {
        display: flex;
        /*justify-content: space-between;*/
        flex-flow: wrap;
        align-items: stretch;
    }

    .box_point.box_4 {
        justify-content: space-around;
    }

    .box_point.box_3 {
        justify-content: center;
    }

    .box_point.box_4 > div {
        padding: 15px 30px;
        /*width: 33.33%;*/
        width: 25%;
        border-bottom: none;
        border-right: #707070 1px solid;
    }
    .box_point.box_3 > div {
        padding: 15px 30px;
        width: calc(100% / 3);
        border-bottom: none;
        border-right: #707070 1px solid;
    }
    .box_point > div:last-child {
        border-right: none;
    }
}