.ctn {
  background: url(../jpg/4405e955-abef-4b15-a914-7327799298ab.jpg) top center no-repeat #fff;
  background-size: 100%;
}
.ctn .page1 {
  padding-top: 100px;
}
.ctn .page1 .w1440 {
  display: flex;
  justify-content: space-between;
}
.ctn .page1 .w1440 .item-l {
  width: 340px;
}
.ctn .page1 .w1440 .item-l p {
  color: #333;
  font-weight: 600;
  display: block;
}
.ctn .page1 .w1440 .item-l span {
  display: block;
  color: #c72c31;
  margin-top: 25px;
}
.ctn .page1 .w1440 .item-r {
  width: calc(100% - 440px);
}
.ctn .page1 .w1440 .item-r p {
  color: #333;    line-height: 1.8;
}
.ctn .page1 .w1440 .item-r .more {
  margin-top: 70px;
}
.ctn .page2 {
  margin-top: 80px;
  width: 100%;
}
.ctn .page2 .pic {
  position: relative;
}
.ctn .page2 .pic .logo {
  width: 474px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.ctn .page3 {
  margin-top: 80px;
}
.ctn .page3 .tit p {
  color: #171717;
  text-align: center;
  display: block;
  font-weight:bold;
}
.ctn .page3 .tit span {
  color: #777777;
  margin-top: 25px;
  text-align: center;
  display: block;
}
.ctn .page3 ul {
  display: flex;
  width: 100%;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-top: 50px;
}
.ctn .page3 ul li {
  width: 32%;
  background: #c80001;
  height: 234px;
  display: flex;
  justify-content: center;
  flex-direction: column;
  flex-wrap: wrap;
  padding-left: 60px;
  position: relative;
  overflow: hidden;
}
.ctn .page3 ul li .num {
  display: flex;
  justify-content: flex-start;
  position: relative;
  z-index: 5;
}
.ctn .page3 ul li .num p {
  font-size: 100px;
  color: #fff;
  line-height: 1;
  font-weight: 600;
}
.ctn .page3 ul li .num span {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.ctn .page3 ul li .num span i {
  display: block;
  color: #fff;
}
.ctn .page3 ul li .txt {
  width: 100%;
  color: #fff;
  margin-top: 5px;
  position: relative;
  z-index: 5;
}
.ctn .page3 ul li .bg {
  position: absolute;
  right: 0;
  bottom: 0;
  top: 0;
}
.ctn .page3 ul li .bg img {
  height: 100%;
  object-fit: cover;
}
.ctn .page4 {
  margin-top: 120px;
  height: 110vh;
  max-height:960px;
  position: relative;
  overflow: hidden;
  background: #000;
}
.ctn .page4 .masking-l {
  width: calc((100% - 1440px) / 2);
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: #fff;
  z-index: 99;
}
.ctn .page4 .masking-r {
  width: calc((100% - 1440px) / 2);
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  background: #fff;
  z-index: 99;
}
.ctn .page4 .tab-bg .item {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  /* .img{
                    width: 100%;
                    height: 100%;
                    opacity: 0;
                    transition: all 1s;
                    img{
                        position: absolute;
                        top: 50%;
                        left: 50%;
                        height: 100%;
                        object-fit: cover;
                        transform:translate(-50%,-50%) scale(1);
                    }
                }
                &.on{
                    z-index: 2;
                    .img{
                        opacity: 1;
                        img{
                            transform:translate(-50%,-50%) scale(1.2);
                            transition: all 20s ease-out 0s;
                        }
                    }
                } */
}
.ctn .page4 .tab-bg .item.on {
  z-index: 2;
}
.ctn .page4 .item-ctn {
  position: absolute;
  top: 70px;
  left: 0;
  bottom: 15%;
  width: 100%;
  z-index: 10;
}
.ctn .page4 .item-ctn .w1440 {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.ctn .page4 .item-ctn .top-txt {
  height: calc(100% - 200px);
}
.ctn .page4 .item-ctn .top-txt ::-webkit-scrollbar {
  width: 5px;
  height: 3px;
}
.ctn .page4 .item-ctn .top-txt ::-webkit-scrollbar-track {
  background: #d7d7d7;
  border-radius: 6px;
}
.ctn .page4 .item-ctn .top-txt ::-webkit-scrollbar-thumb {
  background: #999;
  border-radius: 6px;
}
.ctn .page4 .item-ctn .top-txt .item {
  display: none;
  height: 100%;
}
.ctn .page4 .item-ctn .top-txt .item.on {
  display: block;
}
.ctn .page4 .item-ctn .top-txt .item .tit {
  text-align: center;
  font-weight: 600;
  color: #fff;
}
.ctn .page4 .item-ctn .top-txt .item .des {
  margin-top: 120px;
  width: 65%;
}
.ctn .page4 .item-ctn .top-txt .item .des p {
  color: #fff;
  display: block;
}
.ctn .page4 .item-ctn .top-txt .item .des span {
  display: block;
  line-height: 1.8;
  margin-top: 35px;
  color: #fff;
  text-align: justify;
  height: 18em;
  overflow: overlay;
  padding-right: 20px;
}
.ctn .page4 .item-ctn .tab-but {
  display: flex;
  justify-content: flex-start;
}
.ctn .page4 .item-ctn .tab-but a {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  margin-right: 10px;
  transition: all 0.3s;
}
.ctn .page4 .item-ctn .tab-but a .ic-t {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.ctn .page4 .item-ctn .tab-but a .ic-t p {
  color: #fff;
}
.ctn .page4 .item-ctn .tab-but a .ic-t svg {
  width: 17px;
  height: 17px;
}
.ctn .page4 .item-ctn .tab-but a .txt {
  color: #fff;
}
.ctn .page4 .item-ctn .tab-but a:hover {
  background: #b60005;
  border: 1px solid #b60005;
}
.ctn .page5 {
  padding-top: 90px;
  padding-bottom: 120px;
  display:none;
}
.ctn .page5 .tit {
  color: #171717;
  font-weight: 600;
  text-align: center;
}
.ctn .page5 .sw-box {
  margin-top: 140px;
}
.ctn .page5 .sw-box .sw-top {
  width: 100%;
  position: relative;
}
.ctn .page5 .sw-box .sw-top .swiper-button-next::after,
.ctn .page5 .sw-box .sw-top .swiper-button-prev::after {
  color: #cacaca;
  font-size: 30px;
}
.ctn .page5 .sw-box .sw-top .swiper-button-next:hover::after,
.ctn .page5 .sw-box .sw-top .swiper-button-prev:hover::after {
  color: #b8070c;
}
.ctn .page5 .sw-box .wonderful2 {
  width: 83%;
  margin: 0 auto;
}
.ctn .page5 .sw-box .wonderful2 .swiper-slide {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ctn .page5 .sw-box .wonderful2 .swiper-slide .img {
  width: 31.5%;
}
.ctn .page5 .sw-box .wonderful2 .swiper-slide .img img {
  max-height: 260px;
  width: auto;
  max-width: 100%;
  margin: 0 auto;
}
.ctn .page5 .sw-box .wonderful2 .swiper-slide .txt {
  width: 60%;
}
.ctn .page5 .sw-box .wonderful2 .swiper-slide .txt .num {
  color: #b60005;
  font-weight: bold;
  font-size: 100px;
  line-height: 1;
}
.ctn .page5 .sw-box .wonderful2 .swiper-slide .txt p {
  color: #b60005;
  display: block;
}
.ctn .page5 .sw-box .wonderful2 .swiper-slide .txt span {
  display: block;
  color: #333333;
  margin-top: 30px;
}
.ctn .page5 .sw-box .wonderful1 {
  margin-top: 140px;
}
.ctn .page5 .sw-box .wonderful1::after {
  content: '';
  display: block;
  width: 100%;
  height: 1px;
  position: absolute;
  top: 25px;
  left: 0;
  background-image: linear-gradient(to right, rgba(0, 0, 0, 0) 5%, rgba(0, 0, 0, 0.1) 15%, rgba(0, 0, 0, 0.1) 85%, rgba(0, 0, 0, 0) 95%);
}
.ctn .page5 .sw-box .wonderful1 .swiper-slide {
  padding-top: 20px;
}
.ctn .page5 .sw-box .wonderful1 .swiper-slide::before {
  content: '';
  display: block;
  width: 12px;
  height: 12px;
  border: 2px solid #d0d0d0;
  background: #fff;
  border-radius: 100%;
  margin: 0 auto;
}
.ctn .page5 .sw-box .wonderful1 .swiper-slide .txt {
  color: #777;
  text-align: center;
  font-size: 16px;
  margin-top: 12px;
}
.ctn .page5 .sw-box .wonderful1 .swiper-slide.swiper-slide-thumb-active::before {
  border: 2px solid #b60005;
}
.ctn .page5 .sw-box .wonderful1 .swiper-slide.swiper-slide-thumb-active .txt {
  color: #b60005;
  font-size: 22px;
  font-weight: bold;
}
.ctn .page6 {
  background: url(../jpg/1211b2b9-0f92-4ea8-acf9-b0fd93c7a00299cd.jpg?d=1716970375533) center center;
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  padding: 250px 0;
}
.ctn .page6 .w1440 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.ctn .page6 .w1440 .tit {
  color: #fff;
  font-weight: 600;
  text-align: center;
  padding-bottom: 80px;
  width: 100%;
}
.ctn .page6 .w1440 .item-l {
  width: 100%;
      display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.ctn .page6 .w1440 .item-l li {
  display: flex;
  width: 48%;
  justify-content: space-between;
  align-items: center;
}
.ctn .page6 .w1440 .item-l li:nth-last-child(1) {
  margin-bottom: 0;
}
.ctn .page6 .w1440 .item-l li .ic {
  width: 80px;
  height: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 100%;
  border: 1px solid #fff;
}
.ctn .page6 .w1440 .item-l li .ic img {
  width: 42px;
}
.ctn .page6 .w1440 .item-l li .txt {
  width: calc(100% - 100px);
}
.ctn .page6 .w1440 .item-l li .txt p {
  display: block;
  color: #fff;
  font-weight: 600;
}
.ctn .page6 .w1440 .item-l li .txt span {
  display: block;
  color: #fff;
  margin-top: 15px;
  line-height:1.6;
}
.ctn .page6 .w1440 .item-r {
  width: 52%;
}
.ctn .page6 .w1440 .item-r p {
  display: block;
  width: 100%;
  color: #fff;
  line-height: 1.75;
}
@media screen and (max-width: 1600px) {
  .ctn .page2 {
    padding-left: 10%;
  }
  .ctn .page4 .masking-l,
  .ctn .page4 .masking-r {
    width: 10%;
  }
}
/* 125% */
@media screen and (max-width: 1480px) {
  .ctn .page1 {
        padding-top: 60px;
    }
  .ctn .page1 .w1440 .item-r {
    width: calc(100% - 350px);
  }
  .ctn .page2,
  .ctn .page3 {
    margin-top: 60px;
  }
  .ctn .page1 .w1440 .item-r .more {
    margin-top: 50px;
  }
  .ctn .page3 ul {
    margin-top: 40px;
  }
  .ctn .page3 ul li .num p {
    font-size: 80px;
  }
  .ctn .page3 ul li .num span i:nth-last-child(1) {
    font-size: 20px;
  }
  .ctn .page3 ul li {
    height: 194px;
    padding-left: 40px;
  }
  .ctn .page4 {
    margin-top: 80px;
  }
  .ctn .page4 .item-ctn .top-txt .item .des {
    margin-top: 80px;
  }
  .ctn .page4 {
    height: 130vh;
  }
  .ctn .page5 {
    padding-top: 60px;
    padding-bottom: 80px;
  }
  .ctn .page5 .sw-box {
    margin-top: 80px;
  }
  .ctn .page5 .sw-box .wonderful1 {
    margin-top: 80px;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt .num {
    font-size: 80px;
  }
  .ctn .page6 {
    padding: 200px 0;
  }
}
@media screen and (max-width: 1366px) {
  .ctn .page3 ul li {
    height: 170px;
  }
}
@media screen and (max-width: 1280px) {
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt .num {
    font-size: 60px;
  }
}
@media screen and (max-width: 1200px) {
  .ctn .page2 {
    padding-left: 5%;
  }
  .ctn .page4 .masking-l,
  .ctn .page4 .masking-r {
    width: 5%;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt p {
    font-size: 24px;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt span {
    margin-top: 20px;
  }
}
/* 150 */
@media screen and (max-width: 998px) {
  .ctn .page4 .tab-bg .item{background-attachment: initial;}
  .ctn .page4 {
    margin-top: 40px;
    height: 850px;
  }
  .ctn .page5 {
    padding-top: 40px;
    padding-bottom: 50px;
  }
  .ctn .page1 .w1440 {
    flex-wrap: wrap;
  }
  .ctn .page1 .w1440 .item-l {
    width: 100%;
  }
  .ctn .page1 .w1440 .item-r {
    width: 100%;
    margin-top: 20px;
  }
  .ctn .page1 .w1440 .item-l span {
    margin-top: 10px;
  }
  .ctn .page1 .w1440 .item-r .more {
    margin-top: 20px;
  }
  .ctn .page2 {
    padding: 0 5%;
  }

  .ctn .page2 .pic img {
    height: 100%;
    object-fit: cover;
  }
  .ctn .page2 .pic .logo {
    width: 80%;
  }
  .ctn .page2,
  .ctn .page3 {
    margin-top: 40px;
  }
  .ctn .page3 .tit span {
    margin-top: 10px;
  }
  .ctn .page3 .tit span br {
    display: none;
  }
  .ctn .page3 ul {
    margin-top: 20px;
  }
  .ctn .page3 ul li .num p {
    font-size: 60px;
  }
  .ctn .page3 ul li .num span i {
    line-height: 1;
  }
  .ctn .page3 ul li .num span i:nth-last-child(1) {
    font-size: 16px;
  }
  .ctn .page3 ul li {
    height: 130px;
  }
  .ctn .page4 .item-ctn .top-txt .item .des {
    margin-top: 40px;
    width: 100%;
  }
  .ctn .page4 .item-ctn {
    bottom: 10%;
  }
  .ctn .page5 .sw-box {
    margin-top: 40px;
  }
  .ctn .page5 .sw-box .wonderful1 {
    margin-top: 40px;
  }
  .ctn .page6 .w1440 .item-l li{
  width:100%;
    margin-bottom:20px;
  }
  .ctn .page6 .w1440 .item-l li .ic {
    width: 50px;
    height: 50px;
  }
  .ctn .page6 .w1440 .item-l li .ic img {
    width: 30px;
  }
  .ctn .page6 .w1440 .item-l li .txt {
    width: calc(100% - 70px);
  }
}
@media screen and (max-width: 768px) {
      .ctn .page1 {
        padding-top: 40px;
    }

  .ctn .page3 ul li {
    width: 100%;
    margin-bottom: 10px;
  }
  .ctn .page3 ul li:nth-last-child(1) {
    margin-bottom: 0;
  }
  .ctn .page4 .item-ctn .tab-but {
    justify-content: space-between;
  }
  .ctn .page4 .item-ctn .tab-but a {
    width: 33%;
    margin-right: 0;
    height: 130px;
  }
  .ctn .page4 .item-ctn .top-txt {
    height: calc(100% - 150px);
  }
  .ctn .page4 {
    height: 750px;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide {
    flex-wrap: wrap;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt {
    width: 100%;
    margin-top: 10px;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .img {
    width: 90%;
    margin: 0 auto;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .img img {
    max-height: 200px;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt .num {
    font-size: 40px;
    text-align: center;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt p {
    font-size: 18px;
    text-align: center;
  }
  .ctn .page5 .sw-box .wonderful2 .swiper-slide .txt span {
    margin-top: 5px;
    font-size: 14px;
    text-align: center;
  }
  .ctn .page5 .sw-box .wonderful1 {
    margin-top: 0px;
  }
  .ctn .page6 {
    padding: 80px 0;
    background-attachment: initial;
  }
  .ctn .page6 .w1440 .tit {
    padding-bottom: 30px;
  }
  .ctn .page6 .w1440 .item-l {
    width: 100%;
  }
  .ctn .page6 .w1440 .item-r {
    width: 100%;
    margin-top: 20px;
  }
  .ctn .page6 .w1440 .item-l li {
    margin-bottom: 20px;
  }
  .ctn .page6 .w1440 .item-l li .txt span {
    margin-top: 5px;
  }
}
/*# sourceMappingURL=./nanshan-aluminum.css.map */