@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/c1087cc9-05f9-4c11-8323-900225283ee0.png?t=1643353013651');
  background-position: top center;
  background-size: 100%;
  padding: 0;
}
.ctn_1 .w1280 .bg {
  background-image: url('/repository/image/bfee403d-2586-423f-89c5-57314d030499.png?t=1643353031848');
  background-position: top center;
  background-size: 100%;
  background-repeat: no-repeat;
  padding: 20px;
}
.ctn_1 .tab {
  width: 100%;
  margin: 1rem auto;
  padding: 5px;
  background-color: #fff;
  border-radius: 100px;
  box-shadow: 0px 0px 15px #efefef;
  text-align: center;
}
.ctn_1 .tab a {
  display: inline-block;
  padding: 8px 40px;
  border-radius: 100px;
  background-color: #F5F5F5;
  color: #808080;
  margin: 0 2%;
  font-size: 14px;
  line-height: 1.5;
}
.ctn_1 .tab a.on {
  background-color: #7B191F;
  color: #fff;
}
.ctn_1 .tit {
  color: #000;
  margin-bottom: 0.5rem;
  font-weight: bold;
}
.ctn_1 .subtit {
  color: #808080;
  margin-bottom: 1rem;
}
.ctn_1 .sw_box {
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding: 0 15px;
}
.ctn_1 .sw_box .swiper-button-next,
.ctn_1 .sw_box .swiper-button-prev {
  background-image: url(' ');
  width: 30px;
  height: 30px;
  background-color: #7B191F;
  color: #fff;
  text-align: center;
  line-height: 30px;
  border-radius: 100%;
  overflow: hidden;
}
.ctn_1 .sw_box .swiper-button-next {
  right: 0;
}
.ctn_1 .sw_box .swiper-button-prev {
  left: 0;
}
.ctn_1 .sw_box .swiper-pagination-bullet {
  border: 1px solid #fff;
  background: transparent;
  opacity: 1;
}
.ctn_1 .sw_box .swiper-pagination-bullet-active {
  background: #fff;
  border: 1px solid #fff;
}
.ctn_1 .introduction {
  margin-top: 1.5rem;
}
.ctn_1 .introduction .introduction_img p {
  color: #333;
  text-align: center;
  margin-top: 0.5rem;
}
.ctn_1 .introduction .swipsub_img .swiper-slide {
  border: 1px solid #979797;
}
.ctn_1 .drawing {
  border-top: 2px solid #EBEBEB;
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
}
.ctn_1 .drawing ul {
  width: 25%;
  border-left: 2px solid #75181C;
  background-color: #EBEBEB;
  padding-left: 1rem;
}
.ctn_1 .drawing ul li {
  font-size: 15px;
  color: #808080;
  padding: 0.5rem 0;
  cursor: pointer;
}
.ctn_1 .drawing ul li.on {
  color: #75181C;
  font-weight: bold;
}
.ctn_1 .drawing .drawing_img {
  width: 75%;
  background-color: #fff;
  padding: 1.5rem 0;
  display: flex;
  align-items: center;
}
.ctn_1 .drawing .drawing_img img {
  width: auto;
  max-height: 100%;
  margin: 0 auto;
}
.ctn_1 .mode {
  border-top: 2px solid #EBEBEB;
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}
.ctn_1 .mode .mode_box {
  position: relative;
  padding: 0 10px;
}
.ctn_1 .mode .mode_box .swiper-button-next,
.ctn_1 .mode .mode_box .swiper-button-prev {
  background-image: url(' ');
  width: 30px;
  height: 30px;
  background-color: #7B191F;
  color: #fff;
  text-align: center;
  line-height: 30px;
  border-radius: 100%;
  overflow: hidden;
}
.ctn_1 .mode .mode_box .swiper-button-next {
  right: 0;
}
.ctn_1 .mode .mode_box .swiper-button-prev {
  left: 0;
}
.ctn_1 .mode .mode_img .swiper-slide .img {
  border: 1px solid #EBEBEB;
}
.ctn_1 .mode .mode_img .swiper-slide .txt {
  text-align: center;
  margin-top: 0.5rem;
}
.ctn_1 .mode .mode_img .swiper-slide .txt p {
  display: block;
  width: 100%;
  text-align: center;
  color: #333;
  font-size: 14px;
  line-height: 1.5;
  font-weight: bold;
}
.ctn_1 .mode .mode_img .swiper-slide .txt span {
  display: block;
  width: 100%;
  text-align: center;
  color: #808080;
  font-size: 12px;
  line-height: 1.5;
}
.ctn_1 .standard {
  border-top: 2px solid #EBEBEB;
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}
.ctn_1 .standard ul li {
  color: #808080;
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 0.8rem;
}
.ctn_1 .advantage {
  border-top: 2px solid #EBEBEB;
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}
.ctn_1 .advantage .img {
  margin-top: 0.5rem;
}
.ctn_1 .advantage .img img {
  width: auto;
}
.ctn_1 .use {
  border-top: 2px solid #EBEBEB;
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}
.ctn_1 .use .area {
  display: flex;
  justify-content: flex-start;
  margin-top: 1.5rem;
}
.ctn_1 .use .area .tits {
  color: #131415;
  font-weight: bold;
}
.ctn_1 .use .area ul {
  width: 100%;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  margin-top: 0.6rem;
}
.ctn_1 .use .area ul li {
  font-size: 12px;
  color: #131415;
  margin-bottom: 0.6rem;
}
.ctn_1 .use .area_l {
  width: 35%;
}
.ctn_1 .use .area_l li {
  width: 40%;
}
.ctn_1 .use .area_r {
  width: 40%;
}
.ctn_1 .use .area_r li {
  width: 50%;
}
@media screen and (max-width: 1200px) {
  .ctn_1 .advantage .img {
    overflow-x: scroll;
  }
}
@media screen and (max-width: 900px) {
  .ctn_1 .drawing {
    flex-wrap: wrap;
  }
  .ctn_1 .drawing ul {
    width: 100%;
    border-left: 0;
    border-top: 2px solid #75181C;
    overflow-x: scroll;
    white-space: nowrap;
  }
  .ctn_1 .drawing ul li {
    font-size: 14px;
    display: inline-block;
    margin-right: 20px;
  }
  .ctn_1 .drawing .drawing_img {
    width: 100%;
  }
  .ctn_1 .drawing .drawing_img img {
    width: 90%;
    max-width: none;
  }
  .ctn_1 .tab {
    padding: 5px 0;
    background-color: transparent;
    box-shadow: none;
  }
  .ctn_1 .tab a {
    margin-bottom: 8px;
    font-size: 12px;
    background-color: #fff;
  }
}
@media screen and (max-width: 768px) {
  .ctn_1 .tab a {
    padding: 6px 22px;
  }
  .ctn_1 .mode .mode_box .swiper-button-next,
  .ctn_1 .mode .mode_box .swiper-button-prev {
    width: 25px;
    height: 25px;
    font-size: 12px;
    line-height: 25px;
  }
  .ctn_1 .sw_box {
    padding: 0 10px;
  }
  .ctn_1 .sw_box .swiper-button-next,
  .ctn_1 .sw_box .swiper-button-prev {
    width: 25px;
    height: 25px;
    font-size: 12px;
    line-height: 25px;
  }
  .ctn_1 .use .area {
    flex-wrap: wrap;
  }
  .ctn_1 .use .area li {
    width: 50%!important;
  }
  .ctn_1 .use .area_l {
    width: 100%;
  }
  .ctn_1 .use .area_r {
    width: 100%;
    margin-top: 0.5rem;
  }
  .ctn_1 .standard ul li {
    font-size: 12px;
  }
}