/* sub_banner */
.sub .sub_banner {
   display: table;
   width: 100%;
   /* max-width: 1920px; */
   height: 470px;
}
.sub.sub01 .sub_banner {
   background: url(../images/sub01_banner.jpg) no-repeat center bottom ;
   background-size: cover;
   
}
.sub.sub02 .sub_banner {
   background: url(../images/sub01_banner.jpg) no-repeat center bottom;
   background-size: cover;

}
.sub.sub03 .sub_banner {
   background: url(../images/sub03_banner.jpg) no-repeat center bottom;
   background-size: cover;

}
.sub.sub04 .sub_banner {
   background: url(../images/sub04_banner.jpg) no-repeat center bottom;
   background-size: cover;
}
.sub.sub05 .sub_banner {
   background: url(../images/sub04_banner.jpg) no-repeat center bottom;
   background-size: cover;
}
.sub_bntext {
   display: table-cell;
   padding-top: 130px;
   vertical-align: middle;
}
.sub_bntext > h2 {
   margin-bottom: 10px;
   font-size: 50px;
   color: #fff;
   letter-spacing: 20px;
}
.sub_bntext > p {
   font-size: 25px;
   color: #fff;
   letter-spacing: 5px;
}

/* sub_nav */
.sub_nav {
   border-bottom: 2px solid #bbbbbb;
}
.subnav_wrap {
   display: flex;
   align-items: center;
}
.subnav_wrap .subnav_list {
   position: relative;
}
.subnav_wrap .subnav_list.active>a{
   color: #b61c02;
   font-weight: bold;
}
.subnav_wrap .subnav_list.active:after {
   content: "";
   display: block;
   position: absolute;
   bottom: -2px;
   left: 0;
   right: 0;
   width: 100%;
   height: 4px;
   background: #b61c02;
}
.subnav_wrap .subnav_list > a {
   display: block;
   line-height: 60px;
   font-size: 17px;
}

/* sub_title */
.sub_titwrap {
   position: relative;
   margin-bottom: 50px;
   text-align: center;
}
.sub_titwrap .st_title {
   font-size: 30px;
}
.sub_titwrap .st_eng {
   font-size: 16px;
   color: #bbbbbb;
}
.sub_titwrap .st_explan {
   margin-top: 35px;
   line-height: 29px;
   font-size: 20px;
   word-break: keep-all;
}
.sub_titwrap .urlback_btn {
   position: absolute;
   top: 0;
   left: 0;
   padding: 15px 0;
   cursor: pointer;
}
.sub_titwrap .urlback_btn > span {
   position: relative;
   display: block;
   width: 40px;
   height: 4px;
   background: #888;
}
.sub_titwrap .urlback_btn > span:before,
.sub_titwrap .urlback_btn > span:after {
   content: "";
   display: block;
   position: absolute;
   left: -4px;
   width: 20px;
   height: 4px;
   background: #888;
}
.sub_titwrap .urlback_btn > span:before {
   top: -6px;
   transform: rotate(-50deg);
}
.sub_titwrap .urlback_btn > span:after {
   bottom: -6px;
   transform: rotate(50deg);
}

@media screen and (max-width: 1140px) {
   .sub_titwrap .urlback_btn {
      left: 30px;
   }
}
@media screen and (max-width: 1024px) {
   .sub .sub_banner {
      height: calc(470vw / 1024 * 100);
      min-height: 380px;
   }
   .sub_bntext {
      padding-top: 50px;
   }
   .sub_bntext > h2 {
      font-size: 40px;
   }
   .sub_bntext > p {
      font-size: 20px;
   }
}
@media screen and (max-width: 800px) {
   .sub_nav .hscb {
      padding: 0;
   }
   .subnav_wrap .subnav_list > a {
      line-height: 50px;
      font-size: 14px;
   }
   .sub_titwrap {
      margin-bottom: 30px;
   }
   .sub_titwrap .st_title {
      font-size: 26px;
   }
   .sub_titwrap .st_explan {
      margin-top: 20px;
      padding: 0 15px;
      line-height: 24px;
      font-size: 16px;
   }
}
@media screen and (max-width: 640px) {
   .sub_bntext > h2 {
      font-size: 36px;
      letter-spacing: 15px;
   }
   .sub_bntext > p {
      font-size: 16px;
   }
   .sub_titwrap .urlback_btn {
      display: none;
   }
   .sub_titwrap .st_title {
      font-size: 24px;
   }
   .sub_titwrap .st_eng {
      font-size: 14px;
   }
}