.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: #d6001f;
  }
  .index-swiper-box {
    height: 100vh;
  }
  .index-swiper-box > .swiper-container {
    height: 100vh;
  }
  .index-swiper-box > .swiper-container > .swiper-wrapper > .swiper-slide {
    height: 100vh;
    overflow: hidden;
  }
  .index-swiper-box > .swiper-container > .swiper-wrapper > .swiper-slide.footer-wrapper {
    height: auto;
  }
  .index-box-2,
  .index-box-3 {
    padding-top: 1.2rem;
  }
  .index-box-1 {
    padding-top: 1.3rem;
  }
  .share ul li:hover .hidebox {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    -o-transform: translateY(0);
  }
  .share ul li:hover a {
    background-color: #d6001f;
    border-color: #d6001f;
  }
  .share .wechat:hover a {
    background-image: url(../img/wechat2.png);
  }
  .share .wechat a {
    background-image: url(../img/wechat.png);
  }
  .share .douyin:hover a {
    background-image: url(../img/douyin2.png);
  }
  .share .douyin a {
    background-image: url(../img/douyin.png);
  }
  .share .weibo:hover a {
    background-image: url(../img/weibo2.png);
  }
  .share .weibo a {
    background-image: url(../img/weibo.png);
  }
  .share .tmall:hover a {
    background-image: url(../img/tmall2.png);
  }
  .share .tmall a {
    background-image: url(../img/tmall.png);
  }
  .footer-nav-box li > a:hover {
    color: #d6001f;
  }
  .header-wrapper:hover {
    background-color: #fff;
  }
}
@media screen and (max-width: 1600px) {
  :root {
    --fs18: 0.17rem;
    --fs24: 0.22rem;
    --fs30: 0.28rem;
    --fs36: 0.34rem;
    --fs48: 0.46rem;
  }
  .box-container {
    width: 14rem;
  }
  .pc-nav-box .nav {
    padding-bottom: 0.44rem;
    padding-top: 0.28rem;
  }
  .index-box-1 .desc {
    width: 72.15%;
    margin-bottom: 0.12rem;
  }
  .index-box-1 .video-box {
    margin-top: 0.3rem;
  }
  .index-title {
    line-height: 0.4rem;
    margin-bottom: 0.16rem;
  }
  .index-banner-wrapper .info {
    left: calc((100% - 14rem) / 2);
  }
  .index-box-2 .info {
    padding: 0.4rem 0.44rem 0.36rem 0.5rem;
  }
  .index-box-2 .desc {
    margin: 0.12rem auto 0.2rem;
  }
  .index-box-3 .swiper-container {
    padding-left: calc((100% - 14rem) / 2);
  }
  .index-box-3 .swiper-box {
    height: calc(100vh - 1.76rem);
  }
  .index-box-3 .info {
    padding: 0.56rem 0.4rem 0;
  }
  .index-box-3 .title {
    margin-bottom: 0.36rem;
  }
  .footer-wrapper {
    padding: 0.9rem 0 1.1rem;
  }
  .index-banner-wrapper .title {
    line-height: 0.68rem;
  }
}
@media screen and (max-width: 1440px) {
  :root {
    --fs24: 0.2rem;
    --fs30: 0.26rem;
    --fs36: 0.32rem;
    --fs48: 0.44rem;
  }
  .index-title {
    margin-bottom: 0.3rem;
  }
  .index-box-1 .video-box {
    margin-top: 0.5rem;
  }
  .index-box-2 .info {
    padding: 0.5rem 0.44rem 0.46rem 0.5rem;
  }
  .index-box-3 .swiper-box {
    height: calc(100vh - 1.9rem);
  }
  .index-banner-wrapper .title {
    line-height: 0.64rem;
  }
}
@media screen and (max-width: 1366px) {
  .index-title {
    margin-bottom: 0.15rem;
  }
  .index-box-1 .video-box {
    margin-top: 0.3rem;
  }
  .video-box .play {
    width: 0.7rem;
    height: 0.7rem;
    margin-left: -0.35rem;
    margin-top: -0.35rem;
  }
  .index-box-2 .info {
    padding-top: 0.44rem;
    padding-bottom: 0.4rem;
  }
  .footer-wrapper {
    padding: 0.8rem 0 1rem;
  }
  .index-box-3 .swiper-box {
    height: calc(100vh - 1.75rem);
  }
}
@media screen and (max-width: 1280px) {
  :root {
    --fs14: 13px;
    --fs30: 0.24rem;
    --fs36: 0.3rem;
    --fs48: 0.4rem;
  }
}
@media screen and (max-width: 1004px) {
  :root {
    --fs14: 0.28rem;
    --fs16: 0.3rem;
    --fs18: 0.32rem;
    --fs24: 0.34rem;
    --fs30: 0.36rem;
    --fs36: 0.42rem;
    --fs48: 0.44rem;
  }
  .box-container,
  .w1200 {
    width: 100%;
    padding: 0 0.3rem;
  }
  .hidden-xs {
    display: none;
  }
  .hidden-pc {
    display: block;
  }
  .nav-icon {
    font-size: 0;
    width: 0.52rem;
    height: 0.52rem;
    position: relative;
    margin-left: 0.3rem;
  }
  .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: #d6001f;
    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: -7px;
  }
  .nav-icon span:nth-child(2) {
    margin-top: 0;
  }
  .nav-icon span:nth-child(3) {
    margin-top: 7px;
  }
  .phone-nav {
    width: 100%;
    height: calc(100% - 1.2rem);
    position: fixed;
    right: 0;
    top: 1.2rem;
    background: #fff;
    z-index: 501;
    overflow: auto;
    border-top: 1px solid #f3f3f3;
  }
  .phone-nav ul {
    width: 100%;
    margin: 0 auto;
    position: relative;
    max-height: 80%;
    overflow-y: auto;
    overflow-x: hidden;
    transition: max-height 0.8s ease;
    -webkit-transition: max-height 0.8s ease;
    -moz-transition: max-height 0.8s ease;
    -ms-transition: max-height 0.8s ease;
    -o-transition: max-height 0.8s ease;
  }
  .phone-nav ul::-webkit-scrollbar {
    width: 4px;
  }
  .phone-nav ul::-webkit-scrollbar-track {
    background-color: #eaeaea;
  }
  .phone-nav ul::-webkit-scrollbar-thumb {
    background-color: #d6001f;
  }
  .phone-nav ul li {
    position: relative;
  }
  .phone-nav ul li.active .cat {
    color: #d6001f;
    font-weight: 700;
  }
  .phone-nav ul li.active .cat:before {
    transform: rotate(90deg);
    -webkit-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    -o-transform: rotate(90deg);
  }
  .phone-nav ul li > a {
    position: relative;
    display: block;
    font-size: 0.3rem;
    color: #333;
    line-height: 0.96rem;
    padding: 0 0.3rem;
    border-bottom: 1px solid #f3f3f3;
  }
  .phone-nav ul li .cat:before,
  .phone-nav ul li .cat:after {
    content: "";
    display: inline-block;
    background: #d6001f;
    position: absolute;
    z-index: 10;
  }
  .phone-nav ul li .cat:before {
    width: 0.06rem;
    height: 0.26rem;
    right: 0.4rem;
    top: 0.36rem;
    transition: transform 0.3s ease;
    -webkit-transition: transform 0.3s ease;
    -moz-transition: transform 0.3s ease;
    -ms-transition: transform 0.3s ease;
    -o-transition: transform 0.3s ease;
  }
  .phone-nav ul li .cat:after {
    width: 0.26rem;
    height: 0.06rem;
    right: 0.3rem;
    top: 0.46rem;
  }
  .phone-nav ul li.on > a {
    font-weight: 700;
    color: #d6001f;
  }
  .phone-nav ul li .navs {
    background: #f9f9f9;
    width: 100%;
    display: none;
  }
  .phone-nav ul li .navs a {
    font-size: 14px;
    display: block;
    color: #666;
    padding-left: 0;
    line-height: 1rem;
    padding: 0 0.3rem;
    border-bottom: 1px solid #f3f3f3;
  }
  .phone-nav ul li .navs a:last-child {
    margin-bottom: 0;
    border-bottom: none;
  }
  .phone-nav .search-box {
    position: relative;
    width: 93%;
    margin: 0.6rem auto 0;
    border-radius: 1rem;
    background: #fff;
    /* input placeholder  */
    overflow: hidden;
    border: 1px solid #eaeaea;
  }
  .phone-nav .search-box ::-webkit-input-placeholder {
    /* WebKit browsers */
    color: #999;
    font-size: 14px;
  }
  .phone-nav .search-box :-moz-placeholder {
    /* Mozilla Firefox 4 to 18 */
    color: #999;
    font-size: 14px;
  }
  .phone-nav .search-box ::-moz-placeholder {
    /* Mozilla Firefox 19+ */
    color: #999;
    font-size: 14px;
  }
  .phone-nav .search-box :-ms-input-placeholder {
    /* Internet Explorer 10+ */
    color: #999;
    font-size: 14px;
  }
  .phone-nav .search-box .keywords {
    font-size: 0.28rem;
    color: #666;
    width: 90%;
    border: none;
    background: #fff;
    height: 0.72rem;
    padding: 0 0.3rem;
  }
  .phone-nav .search-box .search-btn {
    position: absolute;
    right: 0.3rem;
    top: 0.18rem;
    z-index: 10;
  }
  .phone-nav .search-box .search-btn svg {
    width: 0.36rem;
    height: 0.36rem;
  }
  .pic img.pc {
    display: none;
  }
  .pic img.phone {
    display: block;
  }
  .header-wrapper.on {
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.1);
  }
  .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 {
    width: 30%;
  }
  .header-wrapper .search {
    display: none;
  }
  .pc-nav-box {
    display: none;
  }
  .footer-wrapper {
    border-width: 1px;
    padding: 0 0 1.2rem;
  }
  .footer-wrapper .box-container {
    flex-flow: wrap;
  }
  .footer-wrapper .left {
    width: 100%;
  }
  .footer-wrapper .right {
    width: 100%;
    text-align: left;
    margin-top: 0.6rem;
  }
  .footer-wrapper .logo-box {
    display: none;
  }
  .footer-wrapper .tel-box p {
    font-size: 0.24rem;
  }
  .footer-wrapper .tel-box a {
    font-size: 0.4rem;
    font-weight: 700;
    margin: 0.02rem auto 0.16rem;
  }
  .footer-wrapper .form {
    margin-top: 0.1rem;
    /* input placeholder  */
  }
  .footer-wrapper .form .text {
    width: calc(100% - 1.5rem);
    padding: 0 0.3rem;
    margin-right: 0.1rem;
    font-size: 0.24rem;
  }
  .footer-wrapper .form .text,
  .footer-wrapper .form .submit {
    height: 0.76rem;
    line-height: 0.76rem;
  }
  .footer-wrapper .form .submit {
    width: 1.4rem;
  }
  .footer-wrapper .form ::-webkit-input-placeholder {
    /* WebKit browsers */
    color: #9999;
    font-size: 0.24rem;
  }
  .footer-wrapper .form :-moz-placeholder {
    /* Mozilla Firefox 4 to 18 */
    color: #9999;
    font-size: 0.24rem;
  }
  .footer-wrapper .form ::-moz-placeholder {
    /* Mozilla Firefox 19+ */
    color: #9999;
    font-size: 0.24rem;
  }
  .footer-wrapper .form :-ms-input-placeholder {
    /* Internet Explorer 10+ */
    color: #9999;
    font-size: 0.24rem;
  }
  .footer-wrapper .copyright,
  .footer-wrapper .copyright a {
    font-size: 0.26rem;
  }
  .footer-wrapper .copyright {
    margin-top: 0.1rem;
    line-height: 0.48rem;
  }
  .links a {
    font-size: 0.26rem;
    padding-right: 0.2rem;
    margin-right: 0.2rem;
    line-height: 0.48rem;
  }
  .links a:after {
    top: 0.12rem;
    height: 0.24rem;
  }
  .share {
    margin: 0.8rem auto 0.5rem;
  }
  .share ul li {
    margin-right: 0.2rem;
  }
  .share ul li:nth-child(1) .hidebox {
    left: 0;
    right: auto;
    margin-left: auto;
  }
  .share ul li a {
    width: 0.6rem;
    height: 0.6rem;
  }
  .share .hidebox {
    bottom: calc(100% + 0.15rem);
    margin-left: -0.9rem;
    width: 1.8rem;
  }
  .footer-nav-box {
    border-top: 1px solid #eaeaea;
  }
  .footer-nav-box li {
    width: 100%;
    margin-top: 0;
    padding-right: 0;
    border-bottom: 1px solid #eaeaea;
  }
  .footer-nav-box li > a {
    font-size: 0.28rem;
    line-height: 0.9rem;
    margin-bottom: 0;
  }
  .footer-nav-box li.active .cat {
    color: #d6001f;
    font-weight: 700;
  }
  .footer-nav-box li.active .cat:before {
    transform: rotate(90deg);
    -webkit-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    -o-transform: rotate(90deg);
  }
  .footer-nav-box li.active .cat:before,
  .footer-nav-box li.active .cat:after {
    background-color: #d6001f;
  }
  .footer-nav-box li .cat {
    position: relative;
  }
  .footer-nav-box li .cat:before,
  .footer-nav-box li .cat:after {
    content: "";
    display: inline-block;
    background: #d6d6d6;
    position: absolute;
    z-index: 10;
  }
  .footer-nav-box li .cat:before {
    width: 0.03rem;
    height: 0.28rem;
    right: 0.12rem;
    top: 0.3rem;
    transition: transform 0.3s ease;
    -webkit-transition: transform 0.3s ease;
    -moz-transition: transform 0.3s ease;
    -ms-transition: transform 0.3s ease;
    -o-transition: transform 0.3s ease;
  }
  .footer-nav-box li .cat:after {
    width: 0.28rem;
    height: 0.03rem;
    right: 0;
    top: 0.42rem;
  }
  .footer-nav-box .nav {
    display: none;
    padding-bottom: 0.3rem;
  }
  .footer-nav-box .nav a {
    font-size: 0.26rem;
    line-height: 0.6rem;
  }
  .footer-nav-box .contact {
    display: none;
  }
  .index-swiper > .swiper-wrapper {
    flex-flow: wrap;
  }
  .index-banner-wrapper .swiper-slide img {
    display: none;
    height: auto;
  }
  .index-banner-wrapper .swiper-slide img.phone {
    display: block;
  }
  .index-banner-wrapper .info {
    left: 0;
    width: 100%;
    top: 1.8rem;
    height: auto;
  }
  .index-banner-wrapper .info2 {
    top: 26%;
  }
  .index-banner-wrapper .info2 .brief {
    font-size: var(--fs20);
    line-height: 0.52rem;
    margin-bottom: 0.3rem;
  }
  .index-banner-wrapper .info2 .title {
    font-size: var(--fs30);
  }
  .index-banner-wrapper .title {
    line-height: 0.6rem;
    margin-bottom: 0.2rem;
  }
  .index-banner-wrapper .brief {
    line-height: 0.46rem;
  }
  .index-banner-wrapper .swiper-btn {
    display: none;
  }
  .index-title {
    line-height: 0.6rem;
    margin-bottom: 0.36rem;
  }
  .index-box-1 {
    padding: 1.2rem 0;
  }
  .index-box-1 .desc {
    width: 100%;
    line-height: 0.48rem;
    margin-bottom: 0.6rem;
  }
  .index-box-1 .video-box {
    width: 100%;
    margin-top: 0.9rem;
  }
  .video-box .play {
    margin-left: -0.5rem;
    margin-top: -0.5rem;
    width: 1rem;
    height: 1rem;
    background-size: 0.2rem;
  }
  .video-modal {
    padding: 0 0.3rem;
  }
  .video-modal .box {
    width: 100%;
  }
  .video-modal .close {
    width: 0.4rem;
    height: 0.4rem;
  }
  .video-modal .close svg {
    width: 0.4rem;
    height: 0.4rem;
  }
  .index-box-2 {
    padding-top: 1.2rem;
  }
  .index-box-2 ul {
    flex-flow: wrap;
    border-width: 1px;
  }
  .index-box-2 li {
    width: 100%;
  }
  .index-box-2 .info {
    padding: 0.9rem 0.3rem;
    border-right: none;
  }
  .index-box-2 .icon {
    height: 0.32rem;
  }
  .index-box-2 .desc {
    margin: 0.3rem auto 0.4rem;
    line-height: 0.48rem;
    height: 1.92rem;
    -webkit-line-clamp: 4;
  }
  .index-box-2 .pic:after {
    display: none;
  }
  .index-box-3 {
    padding-top: 1.2rem;
  }
  .index-box-3 .swiper-box {
    padding: 0.6rem 0.3rem 1.2rem;
    border-width: 1px;
    height: auto;
  }
  .index-box-3 .swiper-container {
    padding-left: 0;
  }
  .index-box-3 .swiper-slide {
    width: 100%;
    height: auto;
  }
  .index-box-3 .swiper-slide a {
    display: block;
  }
  .index-box-3 .pic,
  .index-box-3 .info {
    width: 100%;
  }
  .index-box-3 .info {
    padding: 0.6rem 0.4rem 0.8rem;
  }
  .index-box-3 .time {
    font-size: 0.24rem;
    line-height: 0.36rem;
  }
  .index-box-3 .title {
    line-height: 0.48rem;
    height: auto;
    font-size: 0.3rem;
    max-height: 1.44rem;
    margin: 0.1rem auto 0.4rem;
  }
  .index-box-3 .btn-box {
    margin-top: 0.4rem;
  }
  .index-box-3 .swiper-btn {
    display: none;
  }
  .index-box-3 .swiper-pagination .swiper-pagination-bullet {
    margin: 0 2px;
  }
}