.pro_a {
  background: #fff;
}
.pro_b {
  background: #f5f5f5;
}
.pro-li-box {
  padding-bottom: 4.1666%;
}
.pro-li-box .p-tl-box {
  margin-bottom: 22px;
}
.pro-li-box .bwrap .text {
  color: #4c4c4c;
  max-width: 640px;
  margin: 0 auto;
  line-height: 32px;
  font-size: 16px;
  text-align: center;
  margin-bottom: 32px;
}
.pro-li-box .bwrap .moreBtn {
  margin: 0 auto 60px;
}
.pro-li-box .video-box {
  position: relative;
}
.pro-li-box .video-box .video {
  position: relative;
  z-index: 10;
}
.pro-li-box .video-box .video video {
  width: 100%;
  display: block;
  cursor: pointer;
}
.pro-li-box .video-box .bfbtn {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
     -moz-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  z-index: 100;
  cursor: pointer;
}
.pro-li-box .video-box .tips-box {
  position: absolute;
  left: 0;
  bottom: 50px;
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  z-index: 100;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
     -moz-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}
.pro-li-box .video-box .tips-box .tips {
  margin-right: 40px;
  width: 180px;
  height: 50px;
  -webkit-border-radius: 2px;
     -moz-border-radius: 2px;
          border-radius: 2px;
  border: solid 1px rgba(255, 255, 255, 0.1);
  text-align: center;
  line-height: 48px;
  font-size: 16px;
  color: #fff;
}
.pro-li-box .video-box .tips-box .tips:last-child {
  margin-right: 0;
}
.pro-li-box:nth-child(2n) {
  background: #f5f5f5;
}
@-webkit-keyframes laqi {
  0% {
    opacity: 0;
    width: 0;
  }
  100% {
    opacity: 1;
    width: 100%;
  }
}
@-moz-keyframes laqi {
  0% {
    opacity: 0;
    width: 0;
  }
  100% {
    opacity: 1;
    width: 100%;
  }
}
@keyframes laqi {
  0% {
    opacity: 0;
    width: 0;
  }
  100% {
    opacity: 1;
    width: 100%;
  }
}
.laqi {
  -webkit-animation-name: laqi;
     -moz-animation-name: laqi;
          animation-name: laqi;
}
.pro_c {
  padding: 9% 0 80px;
  background: #050505;
}
.pro_c .pro_name {
  font-size: 42px;
  font-weight: bold;
  color: #fff;
  margin-bottom: 40px;
  text-align: center;
}
.pro_c .pro-info {
  font-size: 18px;
  font-weight: bold;
  line-height: 38px;
  max-width: 960px;
  margin: 0 auto 60px;
  color: #c2c2c2;
  text-align: center;
}
.pro_c .pro-b-img-box {
  position: relative;
  margin-bottom: 40px;
}
.pro_c .pro-b-img-box img{
  width:100%;
}
.pro_c .pro-b-img-box .i-mask {
  z-index: 20;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
}
.pro_c .swiper-box .swiper {
  position: relative;
}
.pro_c .swiper-box .swiper-container .swiper-slide {
  position: relative;
}
.pro_c .swiper-box .swiper-container .swiper-slide .text {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 80px;
  line-height: 80px;
  text-align: center;
  font-size: 24px;
  font-weight: bold;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
}
.pro_c .swiper-box .btn {
  position: absolute;
  top: 50%;
  -webkit-transform: translateY(-50%);
     -moz-transform: translateY(-50%);
      -ms-transform: translateY(-50%);
          transform: translateY(-50%);
  cursor: pointer;
  opacity: .2;
  -webkit-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  -o-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  -moz-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
}
.pro_c .swiper-box .btn:hover {
  opacity: 1;
}
.pro_c .swiper-box .prev {
  left: -110px;
}
.pro_c .swiper-box .next {
  right: -110px;
}
.pro_c .swiper-box .swiper-pagination .swiper-pagination-bullet {
  width: 10px;
  height: 10px;
  opacity: .3;
  background: none;
  border: 1px solid #fff;
  -webkit-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  -o-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  -moz-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
}
.pro_c .swiper-box .swiper-pagination .swiper-pagination-bullet-active {
  background: #fff;
  opacity: 1;
}
.pro_c .back-box {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: end;
  -webkit-justify-content: flex-end;
     -moz-box-pack: end;
      -ms-flex-pack: end;
          justify-content: flex-end;
  margin-top: 80px;
}
.pro_c .back-box .backbtn {
  width: 140px;
  height: 40px;
  -webkit-border-radius: 2px;
     -moz-border-radius: 2px;
          border-radius: 2px;
  border: solid 1px #ffffff;
  opacity: 0.8;
  text-align: center;
  line-height: 38px;
  position: relative;
  color: #fff;
}
.pro_c .back-box .backbtn span {
  position: relative;
  z-index: 20;
}
.pro_c .back-box .backbtn::after {
  content: "";
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  background: url(../images/jt-bg.png) no-repeat center center / cover;
  z-index: 0;
  opacity: 0;
  pointer-events: none;
  -webkit-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  -o-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  -moz-transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  transition: all cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
}
.pro_c .back-box .backbtn:hover {
  opacity: 1;
  border-color: #e40000;
}
.pro_c .back-box .backbtn:hover::after {
  opacity: 1;
}
@media (max-width: 1600px) {
  .pro_c .pro_name {
    font-size: 36px;
  }
  .pro_c .pro-info {
    font-size: 16px;
    line-height: 32px;
  }
  .pro_c .swiper-box .swiper-container .swiper-slide .text {
    font-size: 20px;
  }
}
@media (max-width: 1536px) {
  .pro-li-box .bwrap .text {
    font-size: 14px;
    line-height: 28px;
    margin-bottom: 20px;
  }
  .pro-li-box .bwrap .moreBtn {
    margin-bottom: 30px;
  }
  .pro_c .pro_name {
    font-size: 30px;
    margin-bottom: 20px;
  }
  .pro_c .pro-info {
    font-size: 14px;
    line-height: 28px;
    margin-bottom: 30px;
  }
  .pro_c .swiper-box .swiper-container .swiper-slide .text {
    font-size: 18px;
    height: 60px;
    line-height: 60px;
  }
  .pro_c .back-box {
    margin-top: 60px;
  }
}
@media (max-width: 1366px) {
  .pro-li-box .bwrap .text {
    font-size: 14px;
    line-height: 28px;
  }
  .pro-li-box .bwrap .moreBtn {
    margin-bottom: 40px;
  }
  .pro_c {
    padding-top: 12%;
  }
  .pro_c .pro_name {
    font-size: 24px;
  }
  .pro_c .pro-info {
    font-size: 14px;
    line-height: 28px;
    margin-bottom: 40px;
  }
  .pro_c .swiper-box .swiper-container .swiper-slide .text {
    font-size: 18px;
    line-height: 60px;
    height: 60px;
  }
}
@media (max-width: 768px) {
  .pro-li-box {
    padding-bottom: 60px;
  }
  .pro-li-box .video-box .tips-box {
    padding: 0 5%;
    bottom: 20px;
  }
  .pro-li-box .video-box .tips-box .tips {
    line-height: 28px;
    height: 30px;
    margin-right: 20px;
    font-size: 14px;
  }
  .pro_c {
    padding-top: 50px;
  }
  .pro_c .pro_name {
    margin-bottom: 30px;
  }
  .pro_c .back-box {
    margin-top: 40px;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
       -moz-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
  }
  .pro_c .swiper-box .swiper-container .swiper-slide .text {
    line-height: 44px;
    height: 44px;
    font-size: 14px;
  }
  .pro-li-box .video-box .bfbtn {
    width: 44px;
  }
}