@charset "utf-8";

.sub .key {
  aspect-ratio: 608/315;
}

.sub .key .inner .titlearea .title_en {
  width: 100%;
  border-bottom: 0;
  position: relative;
}
.sub .key .inner .titlearea .title_en:after {
  content: "";
  background-color: #ED5C00;
  width: 98px;
  height: 1px;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
}

.sub .key .inner .titlearea h2  {
  line-height: 131.25%;
}

main > section.sec.sec_list {
    flex-direction: row-reverse;
    gap: 0 124px;
    align-items: flex-start;
}

main > section.sec.sec_list .seccol {
    width: calc((100% - 124px) / 2);
    position: relative;
    padding: 60px 0;
    background-color: #fff;
    margin-bottom: 100px;
    background-image: url(/common/images/sec_bg.png);
    background-position: right top 50px;
    background-repeat: no-repeat;
    background-size: 99px auto;
}

main > section.sec.sec_list .seccol:nth-of-type(2n){
    top: 100px !important;
}

main > section.sec.sec_list .seccol:before   {
    content: "";
    position: absolute;
    bottom: 0;
    width: 1px;
    height: calc(100% - 65px);
    background-color: rgba(205, 205, 205, 0.5);
    left: 58px;
}

main > section.sec.sec_list .seccol.has_after:after   {
    content: "";
    position: absolute;
    bottom: 75px;
    width: 100%;
    height: 1px;
    background-color: rgba(205, 205, 205, 0.5);
    left: 0;
}

main > section.sec.sec_list .seccol.has_after {
    margin-bottom: 200px;
}

main > section.sec.sec_list .seccol.has_after .col_inner:after   {
    content: "";
    background-color: #fff;
    background-image: url(/common/images/sec_bg.png);
    background-position: center top;
    background-repeat: repeat;
    background-size: 98px auto;
    width: 100%;
    height: 100px; 
    position: absolute;
    bottom: -100px;
    left: 0;
}

@media screen and (max-width: 834px)    {
    .sub .key {
      aspect-ratio: auto;
    }

    main > section.sec.sec_list .seccol {
        width: 100%;
        margin-bottom: 7.63vw;
    }
    
    main > section.sec.sec_list .seccol:nth-of-type(2n) {
        top: auto;
    }

    main > section.sec.sec_list .seccol:before  {
        left: 5.08vw;
    }
    
    main > section.sec.sec_list .seccol  {
        background-size: 12.72vw auto;
    }
    
    main > section.sec.sec_list .seccol.has_after .col_inner:after   {
        display: none;
    }
    
    main > section.sec.sec_list .seccol.sp_has_after    {
        margin-bottom: 20.35vw;
    }

    main > section.sec.sec_list .seccol.sp_has_after .contentarea   {
        position: static;
    }

    main > section.sec.sec_list .seccol.sp_has_after .contentarea:after   {
        content: "";
        background-color: #fff;
        background-image: url(/common/images/sec_bg.png);
        background-position: center top;
        background-repeat: repeat;
        background-size: 12.72vw auto;
        width: 79.64vw;
        height: 12.72vw;
        position: absolute;
        bottom: -12.72vw;
        left: 0;
    }
    
    main > section.sec.sec_list .seccol:nth-of-type(2n) {
      top: 0 !important;
    }
}