@keyframes dow_arr1 {
  0% {
    opacity: 0;
  }
  24% {
    opacity: 0;
  }
  25% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes dow_arr2 {
  0% {
    opacity: 0;
  }
  49% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes large-s {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.05);
  }
}
.ctn_1 {
  width: 100%;
  overflow: hidden;
  margin-top: -10%;
  position: relative;
  z-index: 5;
  padding-bottom: 4rem;
}
.ctn_1 .w1280 {
  background-image: url('/repository/image/27bbac38-6f9a-41bd-83ff-315c07c0462f.jpg?t=1644561653334');
  background-position: top center;
  background-repeat: no-repeat;
  background-size: 100%;
  background-color: #fbfbfb;
}
.ctn_1 .tab {
  width: 100%;
  margin-top: 1rem;
  background-color: #fff;
  border-radius: 100px;
  box-shadow: 0px 0px 15px #efefef;
  text-align: center;
}
.ctn_1 .tab a {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 100px;
  background-color: #F5F5F5;
  color: #808080;
  margin: 5px 2%;
  font-size: 14px;
  line-height: 1.5;
}
.ctn_1 .tab a.on {
  background-color: #7B191F;
  color: #fff;
}
.ctn_1 .project {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
}
.ctn_1 .project li {
  width: 20%;
}
.ctn_1 .project li p {
  color: #000;
  display: block;
  text-align: center;
}
.ctn_1 .project li span {
  color: #808080;
  display: block;
  text-align: center;
}
.ctn_1 .sw_box {
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding: 0 15px;
}
.ctn_1 .sw_box .swiper-container .img {
  width: 100%;
  padding-top: 139%;
  position: relative;
  overflow: hidden;
  border-radius: 6px;
}
.ctn_1 .sw_box .swiper-container .img img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.ctn_1 .sw_box .swiper-container .txt {
  color: #808080;
  text-align: center;
  margin-top: 0.3rem;
}
.ctn_1 .sw_box .swiper-container .swiper-slide {
  width: 270px;
  padding-bottom: 30px;
  overflow: hidden;
  padding: 10px;
}
.ctn_1 .sw_box .swiper-container .swiper-slide .img {
  opacity: 0.5;
}
.ctn_1 .sw_box .swiper-container .swiper-slide .txt {
  opacity: 0.5;
}
.ctn_1 .sw_box .swiper-container .swiper-slide img {
  box-shadow: 0px 17px 20px #ccc;
}
.ctn_1 .sw_box .swiper-container .swiper-slide.swiper-slide-active .img {
  opacity: 1;
  box-shadow: 0px 0px 10px #ccc;
}
.ctn_1 .sw_box .swiper-container .swiper-slide.swiper-slide-active .txt {
  opacity: 1;
}
.ctn_1 .sw_box .swiper-container .swiper-slide.swiper-slide-active:hover img {
  transform: translate(-50%, -50%) scale(1.05);
}
.ctn_1 .sw_box .swiper-button-next,
.ctn_1 .sw_box .swiper-button-prev {
  background-image: url(' ');
  width: 25px;
  height: 25px;
  background-color: #7B191F;
  color: #fff;
  text-align: center;
  line-height: 25px;
  border-radius: 100%;
  font-size: 14px;
  overflow: hidden;
}
.ctn_1 .sw_box .swiper-button-next {
  right: 0;
}
.ctn_1 .sw_box .swiper-button-prev {
  left: 0;
}
@media screen and (max-width: 900px) {
  .ctn_1 .tab {
    background-color: transparent;
  }
  .ctn_1 .tab a {
    background-color: #fff;
  }
}
@media screen and (max-width: 768px) {
  .ctn_1 .tab a {
    font-size: 12px;
  }
}