.rel {
  position: relative;
}
.abs {
  position: absolute;
}
.fixed {
  position: fixed;
}
.flex {
  display: flex;
  display: -webkit-box;
  /* Chrome 4+, Safari 3.1, iOS Safari 3.2+ */
  display: -moz-box;
  /* Firefox 17- */
  display: -webkit-flex;
  /* Chrome 21+, Safari 6.1+, iOS Safari 7+, Opera 15/16 */
  display: -moz-flex;
  /* Firefox 18+ */
  display: -ms-flexbox;
  /* IE 10 */
}
.flex-wrap {
  flex-flow: wrap;
}
.flex-between {
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  -webkit-justify-content: space-between;
  justify-content: space-between;
}
.inline-block {
  display: inline-block;
}
.block {
  display: block;
}
.hide {
  display: none;
}
.bold {
  font-weight: 700;
}
.txt-center {
  text-align: center;
}
.txt-left {
  text-align: left;
}
.txt-right {
  text-align: right;
}
.before {
  opacity: 0;
  visibility: hidden;
}
.after {
  opacity: 1;
  visibility: visible;
}
.font {
  font-family: Arial;
}
.txt {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.upper {
  text-transform: uppercase;
}
.middle {
  vertical-align: middle;
}
.background {
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center center;
}
.mbackground {
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}
@media screen and (min-width: 1024px) {
  ::-webkit-scrollbar {
    width: 5px;
    background-color: #f7f8f9;
  }
  ::-webkit-scrollbar-thumb {
    background-color: #000;
  }
  .nav-box .item {
    opacity: 0;
    visibility: hidden;
    transition: all 0.8s ease;
    -webkit-transition: all 0.8s ease;
    -moz-transition: all 0.8s ease;
    -ms-transition: all 0.8s ease;
    -o-transition: all 0.8s ease;
  }
  .nav-box .item:hover .first {
    opacity: 1;
    visibility: visible;
  }
  .nav-box .first:hover ul {
    opacity: 1;
    visibility: visible;
  }
  .nav-box .first a:hover {
    color: #000;
  }
  .nav-box .first a:hover:after {
    background-image: url(../img/icon3.png);
  }
  .nav-box .first li > a:hover {
    color: #000;
  }
  .nav-box .first li > a:hover:after {
    background-image: url(../img/icon3.png);
  }
  .nav-box .first li:hover .second {
    opacity: 1;
    visibility: visible;
  }
  .nav-box ul {
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    -webkit-transition: all 0.5s ease;
    -moz-transition: all 0.5s ease;
    -ms-transition: all 0.5s ease;
    -o-transition: all 0.5s ease;
  }
  .nav-box .second {
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    -webkit-transition: all 0.5s ease;
    -moz-transition: all 0.5s ease;
    -ms-transition: all 0.5s ease;
    -o-transition: all 0.5s ease;
  }
}
@media screen and (max-width: 1600px) {
  .box-container {
    width: 14rem;
  }
  :root {
    --fs18: 17px;
    --fs20: 18px;
    --fs22: 20px;
    --fs24: 22px;
    --fs28: 26px;
    --fs30: 28px;
    --fs36: 34px;
    --fs40: 36px;
    --fs48: 44px;
  }
  .index-box .box-2 .pic img {
    height: 3.15rem;
  }
  .footer-wrapper {
    padding-top: 1rem;
  }
  .index-box .box-2 {
    margin-top: 1.2rem;
  }
  .footer-nav li > a {
    margin-bottom: 0.12rem;
  }
}
@media screen and (max-width: 1440px) {
  :root {
    --fs16: 15px;
    --fs18: 16px;
    --fs20: 17px;
    --fs22: 0.2rem;
    --fs24: 0.22rem;
    --fs28: 0.26rem;
    --fs30: 0.28rem;
    --fs36: 0.3rem;
    --fs40: 0.32rem;
    --fs48: 0.4rem;
  }
  .footer-wrapper {
    padding-top: 0.9rem;
  }
  .search-form {
    padding: 1.1rem 0;
  }
}
@media screen and (max-width: 1366px) {
  :root {
    --fs14: 13px;
    --fs16: 14px;
  }
}
@media screen and (max-width: 1280px) {
  :root {
    --fs14: 12px;
  }
}
@media screen and (max-width: 1004px) {
  :root {
    --fs14: 0.24rem;
    --fs16: 0.28rem;
    --fs18: 0.3rem;
    --fs20: 0.32rem;
    --fs22: 0.36rem;
    --fs24: 0.38rem;
    --fs28: 0.4rem;
    --fs30: 0.42rem;
    --fs36: 0.44rem;
    --fs40: 0.46rem;
    --fs48: 0.48rem;
  }
  .box-container,
  .w1200 {
    width: 100%;
    padding: 0 0.3rem;
  }
  .hidden-xs {
    display: none;
  }
  .hidden-pc {
    display: block;
  }
  .menu-trigger,
  .close-trigger {
    position: fixed;
    top: 0.44rem;
    right: 0.3rem;
    display: block;
    width: 0.5rem;
    height: 0.5rem;
    cursor: pointer;
    z-index: 333;
    transition: all 0.8s ease;
    -webkit-transition: all 0.8s ease;
    -moz-transition: all 0.8s ease;
    -ms-transition: all 0.8s ease;
    -o-transition: all 0.8s ease;
    transition-delay: 0.1s;
  }
  .menu-trigger:hover .menu-trigger-bar:before,
  .close-trigger:hover .menu-trigger-bar:before {
    width: 100%;
  }
  .menu-trigger:hover .close-trigger-bar:before,
  .close-trigger:hover .close-trigger-bar:before {
    width: 100%;
  }
  .close-trigger {
    z-index: 5;
    top: 0.6rem;
  }
  .menu-trigger-bar {
    display: block;
    width: 100%;
    height: 0.04rem;
    background-color: #fff;
    margin-bottom: 0.08rem;
    transform: rotate(-45deg);
    position: relative;
  }
  .menu-trigger-bar:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 0%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    transition: all 0.3s cubic-bezier(0.55, 0, 0.1, 1);
  }
  .menu-trigger-bar.top {
    width: 50%;
    margin-bottom: 0.06rem;
  }
  .menu-trigger-bar.middle:before {
    left: auto;
    right: 0;
  }
  .menu-trigger-bar.bottom {
    width: 50%;
    margin-left: 50%;
  }
  .close-trigger-bar {
    display: block;
    width: 100%;
    height: 0.04rem;
    background-color: #fff;
    position: relative;
  }
  .close-trigger-bar:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 0%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.55, 0, 0.1, 1);
  }
  .close-trigger-bar.left {
    transform: translateX(100px) translateY(-100px) rotate(-45deg);
  }
  .close-trigger-bar.right {
    transform: translateX(-100px) translateY(-100px) rotate(45deg);
    top: -0.04rem;
  }
  .menu-container {
    position: relative;
  }
  .menu-container {
    display: flex;
    align-items: center;
  }
  .menu {
    display: block;
    width: 100%;
  }
  .menu-bg {
    position: absolute;
    display: block;
    width: 200%;
    left: -53%;
    top: -25%;
    height: 40%;
    background-color: white;
  }
  .menu-bg.middle {
    top: 29%;
    left: -53%;
    transform: rotate(-45deg) scaleY(0);
  }
  .menu-bg.top {
    left: -34%;
    top: 0;
    transform: rotate(-45deg) translateY(-152%);
  }
  .menu-bg.bottom {
    top: 105%;
    transform: rotate(-45deg) translateY(25%);
    left: -20%;
  }
  .nav-icon {
    font-size: 0;
    width: 0.48rem;
    height: 0.48rem;
    position: relative;
    margin-left: 0.4rem;
  }
  .nav-icon.on span:nth-child(1) {
    transform: rotate(45deg);
    margin: 0;
    transition: margin 180ms cubic-bezier(0.215, 0.61, 0.355, 1), transform 270ms cubic-bezier(0.215, 0.61, 0.355, 1) 180ms, -webkit-transform 270ms cubic-bezier(0.215, 0.61, 0.355, 1) 180ms;
  }
  .nav-icon.on span:nth-child(2) {
    opacity: 0;
  }
  .nav-icon.on span:nth-child(3) {
    transform: rotate(-45deg);
    margin: 0;
    transition: margin 180ms cubic-bezier(0.215, 0.61, 0.355, 1), transform 270ms cubic-bezier(0.215, 0.61, 0.355, 1) 180ms, -webkit-transform 270ms cubic-bezier(0.215, 0.61, 0.355, 1) 180ms;
  }
  .nav-icon span {
    display: inline-block;
    width: 100%;
    height: 0.04rem;
    background: #fff;
    position: absolute;
    left: 0;
    top: 0.24rem;
    z-index: 10;
    transform-origin: center center;
    transition: margin 140ms cubic-bezier(0.25, 0.46, 0.45, 0.94) 230ms, transform 280ms cubic-bezier(0.215, 0.61, 0.355, 1) 0ms, -webkit-transform 280ms cubic-bezier(0.215, 0.61, 0.355, 1) 0ms;
  }
  .nav-icon span:nth-child(1) {
    margin-top: -6px;
  }
  .nav-icon span:nth-child(2) {
    margin-top: 0;
  }
  .nav-icon span:nth-child(3) {
    margin-top: 6px;
  }
  .nav-box {
    position: fixed;
    left: 0;
    top: 0;
    z-index: -1;
    width: 100%;
    height: 100%;
    padding-top: 1.2rem;
  }
  .nav-box.on {
    z-index: 38;
  }
  .nav-box.on {
    opacity: 1;
    visibility: visible;
    left: 0;
  }
  .nav-box .item {
    display: none;
    position: static;
    left: 0;
    top: 0;
    width: 100%;
    height: auto;
    padding: 0;
    background-color: #fff;
  }
  .nav-box .item > a {
    font-size: var(--fs24);
    padding: 0 0.3rem;
  }
  .nav-box .first ul,
  .nav-box .second {
    position: static;
    padding-top: 0;
    padding-bottom: 0;
    background-color: #fff;
    height: auto;
    border-left: none;
  }
  .nav-box .first {
    padding: 0;
  }
  .nav-box .first > a {
    font-size: var(--fs18);
  }
  .nav-box .first > a.cat.on:after {
    transform: rotate(90deg);
  }
  .nav-box .first a {
    border-color: #f7f8f9;
    padding: 0 0.6rem 0 0.3rem;
    line-height: 0.9rem;
  }
  .nav-box .first a.noIcon:after {
    display: none;
  }
  .nav-box .first a:after {
    right: 0.3rem;
  }
  .nav-box .first li {
    padding: 0;
  }
  .nav-box .first li > a {
    padding-left: 0.3rem;
    font-size: var(--fs18);
  }
  .nav-box .first li > a:after {
    display: none;
  }
  .nav-box ul {
    display: none;
  }
  .nav-box .second {
    display: none;
    padding-left: 0;
    padding-right: 0;
  }
  .nav-box .second a {
    font-size: var(--fs16);
  }
  .nav-box .caption {
    display: block;
    font-size: var(--fs22);
    line-height: 1rem;
    padding: 0 0.6rem 0 0.3rem;
    position: relative;
    color: #000;
    border-bottom: 1px solid #f7f8f9;
  }
  .nav-box .caption.on:after {
    transform: rotate(90deg);
  }
  .nav-box .caption:after {
    content: "";
    width: 6px;
    height: 100%;
    background-image: url(../img/icon2.png);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center center;
    position: absolute;
    right: 0.3rem;
    top: 0;
    z-index: 10;
    transition: background 0.3s ease;
    -webkit-transition: background 0.3s ease;
    -moz-transition: background 0.3s ease;
    -ms-transition: background 0.3s ease;
    -o-transition: background 0.3s ease;
  }
  .pic img.pc {
    display: none;
  }
  .pic img.phone {
    display: block;
  }
  .header-wrapper.on {
    top: -1.3rem;
  }
  .header-wrapper.on .menu-trigger,
  .header-wrapper.on .close-trigger {
    top: -1.3rem;
  }
  .header-wrapper .menu-trigger {
    transition-delay: 0s;
  }
  .header-wrapper .box-container {
    height: 1.2rem;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    -webkit-justify-content: space-between;
    justify-content: space-between;
  }
  .header-wrapper .logo-box a img {
    height: 0.8rem;
  }
  .header-wrapper .other-box {
    padding-right: 0.8rem;
  }
  .header-wrapper .language a,
  .header-wrapper .language span {
    font-size: var(--fs14);
  }
  .header-wrapper .language > span {
    margin: 0 0.1rem;
  }
  .header-wrapper .search {
    width: 0.32rem;
    height: 0.32rem;
    margin-left: 0.4rem;
  }
  .p_h {
    height: 1.2rem;
  }
  .search-form {
    padding: 0.8rem 0;
  }
  .search-form .main {
    width: 100%;
    padding: 0 0.3rem;
  }
  .search-form .keywords {
    line-height: 40px;
    margin-left: 15px;
    font-size: 14px;
    padding-right: 20px;
  }
  .search-form .close {
    margin-top: -10px;
    width: 16px;
    height: 16px;
    right: 0.3rem;
  }
  .search-form .search-btn img {
    width: 16px;
  }
  .pc-nav-box {
    display: none;
  }
  .slick-dots li {
    width: 0.44rem;
    height: 0.1rem;
  }
  .slick-dots li {
    margin: 0 8px;
  }
  .slick-slide .title {
    font-size: var(--fs30);
    line-height: 0.64rem;
    letter-spacing: 0.02rem;
  }
  .slick-slide video {
    height: 8rem;
  }
  .index-more {
    line-height: 0.32rem;
  }
  .index-title {
    font-size: 0.4rem;
    line-height: 0.6rem;
  }
  .index-box {
    padding: 0.3rem 0.3rem 1.2rem;
  }
  .index-box .box-1 .item {
    margin-top: 0.3rem;
  }
  .index-box .box-1 .item:nth-child(3),
  .index-box .box-1 .item:nth-child(4) {
    width: 100%;
  }
  .index-box .box-1 .pic img {
    height: 6.9rem;
    object-fit: cover;
  }
  .index-box .box-1 .info {
    top: 1.12rem;
    padding: 0 0.3rem;
  }
  .index-box .box-1 .title {
    font-size: var(--fs36);
  }
  .index-box .box-1 .brief {
    font-size: var(--fs16);
    margin: 0 auto 0.3rem;
    line-height: 0.4rem;
  }
  .index-box .box-1 video {
    display: none;
  }
  .index-box .box-2 {
    margin-top: 1.2rem;
  }
  .index-box .box-2 .box-container {
    padding-left: 0;
    padding-right: 0;
  }
  .index-box .box-2 .swiper-slide:nth-child(odd) .info {
    margin-top: 0.5rem;
  }
  .index-box .box-2 .swiper-slide:nth-child(even) .info {
    margin-bottom: 0;
  }
  .index-box .box-2 .swiper-slide a {
    display: block;
  }
  .index-box .box-2 .pic img {
    height: auto;
  }
  .index-box .box-2 .info {
    margin-top: 0.5rem;
  }
  .index-box .box-2 .title {
    font-size: 0.36rem;
    line-height: 0.6rem;
    height: 1.2rem;
    margin-bottom: 0.24rem;
  }
  .index-box .box-2 .bottom {
    margin-top: 0.8rem;
  }
  .index-box .box-2 .swiper-btn {
    width: 8px;
  }
  .index-box .box-2 .prev {
    margin-right: 0.3rem;
  }
  .index-box .box-2 .progress {
    margin: 0 0.2rem;
  }
  .index-box .box-2 .progress div {
    line-height: 0.36rem;
  }
  .index-box .box-2 .current {
    font-size: 0.24rem;
  }
  .index-box .box-2 .total {
    font-size: 0.24rem;
  }
  .index-box .box-2 .line {
    width: 1rem;
    height: 1px;
    margin-right: 0.1rem;
  }
  .index-box .box-2 .swiper-pagination {
    height: 1px;
    width: 60%;
  }
  .footer-wrapper {
    padding: 1rem 0 0.5rem;
  }
  .footer-wrapper .base {
    display: block;
  }
  .footer-wrapper .copyright {
    line-height: 0.36rem;
    padding-top: 0.48rem;
    margin-top: 0.8rem;
  }
  .footer-wrapper .other {
    text-align: center;
  }
  .footer-wrapper .logo {
    display: inline-block;
  }
  .footer-wrapper .logo img {
    height: 0.8rem;
    margin: 0 auto;
  }
  .share a {
    width: 0.36rem;
  }
  .footer-nav {
    display: none;
  }
}