@media screen and (min-width: 1800px) {

  /* #region  首页*/
  html,
  body {
    font-size: 20px;
  }

  .width {
    width: 1600px;
  }

  .width2 {
    width: 1200px;
  }


  /* #endregion */

}

@media screen and (max-width: 1799px) {

  /* #region  首页*/
  html,
  body {
    font-size: 19.5px;
  }

  .width {
    width: 1440px;
  }

  .contact_right {
    height: 556px;
  }

  /* #endregion */

}

@media screen and (max-width: 1599px) {

  /* #region  首页*/
  html,
  body {
    font-size: 19px;
  }

  .width,
  .width2 {
    width: 1200px;
  }

  .nav li {
    margin-right: 2.6rem;
  }

  .banner_left {
    padding-left: 8%;
  }

  .banner_right {
    padding-right: 5%;
  }

  .index3_text {
    padding: 0 16%;
  }

  .index2 a {
    padding: 6.3rem 10%;
  }

  /* #endregion */

  /* #region  内页*/
  .contact_right {
    height: 485px;
  }

  /* #endregion */

}

@media screen and (max-width: 1439px) {

  /* #region  首页*/
  html,
  body {
    font-size: 18px;
  }

  .width,
  .width2 {
    width: 1080px;
  }

  .nav li {
    margin-right: 2.2rem;
  }

  .banner {
    height: 40rem;
  }

  .index1_btn {
    margin: 4.5rem auto 0 auto;
  }

  .index2 a {
    padding: 6.3rem 8%;
  }

  .index3_text {
    padding: 0 14%;
  }

  /* #endregion */

  /* #region  内页*/
  .contact_right {
    height: 444px;
  }

  /* #endregion */

}

@media screen and (max-width: 1279px) {

  /* #region  首页*/
  html,
  body {
    font-size: 17px;
  }

  .width,
  .width2 {
    width: 950px;
  }

  .header {
    height: 5rem;
  }

  .logo img {
    width: 13.5rem;
  }

  .nav li {
    margin-right: 2.1rem;
  }

  .banner {
    height: 38rem;
  }

  .index1_btn {
    margin: 4rem auto 0 auto;
  }

  .index2 a {
    padding: 5.8rem 7%;
  }

  .index3_text {
    padding: 0 13%;
  }

  .index5 li {
    width: 18.5%;
  }

  /* #endregion */

  /* #region  内页*/
  .nshow_card h1 {
    font-size: 34px;
  }

  .nshow_time,
  .page2,
  .nshow_text {
    font-size: 15px;
  }

  .contact_left,
  .about3 .swiper-container .swiper-slide,
  .about1 {
    font-size: .85rem;
  }

  .about3 .swiper-container {
    width: 70%;
  }

  .contact_right {
    height: 390px;
  }

  /* #endregion */

}

@media screen and (max-width: 1135px) {

  /* #region  首页*/
  html,
  body {
    font-size: 16px;
  }

  .width,
  .width2 {
    width: 850px;
  }

  .nav li {
    margin-right: 2rem;
  }

  .banner {
    height: 36rem;
  }

  .index2 a {
    padding: 5.3rem 7%;
  }

  .index3_text {
    padding: 0 10%;
  }

  .index5 li {
    width: 20%;
  }

  .footer_bottom div {
    font-size: 13px;
  }

  .nav_row img {
    width: 13.8rem;
  }

  .nav_row a {
    margin: 0 1.8rem;
  }

  /* #endregion */

  /* #region  内页*/
  .contact_right {
    height: 350px;
  }

  /* #endregion */

}

@media screen and (min-width: 768px) and (max-width: 992px) {

  /* #region  首页*/
  .width,
  .width2 {
    width: 80%;
  }

  .logo img {
    width: 12rem;
  }

  .nav li {
    margin-right: 1.2rem;
  }

  .banner_t1 {
    font-size: 2rem;
  }

  .banner_t2 {
    font-size: .9rem;
  }

  .banner_t3 {
    font-size: .9rem;
    width: 6.5rem;
    height: 2.2rem;
  }

  .banner {
    height: 34rem;
  }

  .index3_bottom div,
  .index3_bottom a,
  .index1_btnm,
  .index1 .swiper-slide span {
    font-size: .9rem;
  }

  .footer_bottom div,
  .footer li a,
  .index6_right a,
  .index6_left span,
  .index2_text {
    font-size: .9rem;
  }

  .index2 a {
    padding: 4.8rem 7%;
  }

  .index3_text {
    padding: 0 8%;
    font-size: .9rem;
  }

  .index5 li {
    width: 21%;
  }

  .nav_href img {
    margin-left: .4rem;
  }

  .news_ul li div,
  .news_ul li span {
    font-size: .9rem;
  }

  /* .nav_href{
    min-width: auto;
  } */
  /* #endregion */

  /* #region  内页*/
  .case_txt div,
  .contact_left,
  .about3 .swiper-container .swiper-slide,
  .about1,
  .video_ul span,
  .pshow_text,
  .pshow_row,
  .page a,
  .product_ul span,
  .product_left li a {
    font-size: .9rem;
  }

  .news_tab a {
    font-size: 1.1rem;
  }

  .nshow_card h1 {
    font-size: 30px;
  }

  .page2 {
    margin-top: 38px;
  }

  .nshow_card {
    padding: 40px 4.16% 46px 4.16%;
  }

  .video_popup {
    width: 70%;
  }

  .about1 {
    width: 100%;
  }

  .about3 .swiper-container {
    width: 75%;
  }

  .about3 {
    margin-top: 4.5rem;
    padding-bottom: 7rem;
  }

  .contact_right {
    height: 25rem;
  }

  .case_txt {
    padding: 1.6rem 5.66% 2rem 6.5%;
  }

  /* #endregion */

}

@media screen and (max-width: 767px) {

  /* #region  首页*/
  .width,
  .width2 {
    width: 95%;
  }

  .nav_modal {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    background: rgba(0, 0, 0, .5);
  }

  .nav_icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
  }

  .nav_icon img {
    width: 2.6rem;
    transition: .2s;
  }

  .nav_icon2 img {
    transform: rotate(90deg);
  }

  .nav {
    position: fixed;
    left: -101%;
    top: 0;
    width: 60%;
    height: 100%;
    background: #fff;
    z-index: 999999;
    display: block;
    padding-top: 2rem;
    transition: .2s;
  }

  .nav2 {
    left: 0;
  }

  .nav li {
    height: auto;
    margin-top: 1.5rem;
    margin-right: 0;
  }

  .nav_href {
    width: 100%;
    padding: .8rem 1.1rem;
    font-size: 1.2rem;
    position: relative;
  }

  .nav_href:hover,
  .nav_active {
    background: none;
    color: #2569B4;
  }

  .nav_active::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: 3rem;
    height: .2rem;
    border-radius: 30px;
    background: #2569B4;
  }

  .nav_href img {
    display: none;
  }

  .nav_select {
    display: none !important;
  }

  .language {
    margin-left: auto;
    font-size: 1.1rem;
  }

  .language div img {
    width: 1.5rem;
  }

  .banner_list .width {
    height: 100%;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    justify-content: flex-end;
    text-align: center;
  }

  .banner_right {
    width: 70%;
    padding-right: 0;
  }

  .banner_left {
    width: 100%;
    padding: 0 2rem;
  }

  .banner_t1 {
    font-size: 2rem;
  }

  .banner_t2 {
    font-size: 1.1rem;
  }

  .banner_t3 {
    width: 7rem;
    height: 2.5rem;
    font-size: 1.1rem;
    margin-top: 2.2rem;
    margin-left: auto;
    margin-right: auto;
  }

  .banner {
    height: 38rem;
  }

  .index1 {
    padding: 3.8rem 0 3.8rem 0;
  }

  .index1 .swiper-slide h3 {
    font-size: 1.2rem;
  }

  .index1 .swiper-slide span {
    font-size: 1.1rem;
  }

  .index1_dot {
    position: relative;
    justify-content: center;
    margin-top: 2rem;
  }

  .index1_dot div {
    position: relative;
    left: 0;
    right: 0;
    transform: translateX(0);
    margin: 0 2rem;
  }

  .index1_btn {
    width: 12rem;
    height: 3rem;
    font-size: 1.1rem;
    margin: 3.4rem auto 0 auto;
  }

  .index2 .width {
    display: block;
  }

  .index2 a {
    width: 100%;
  }

  .index2_text {
    font-size: 1.1rem;
    line-height: 2rem;
    height: 6rem;
  }

  .index2_btn {
    width: 9.7rem;
    height: 3.2rem;
    font-size: 1.1rem;
  }

  .index2_btn img {
    width: .45rem;
    margin-left: .8rem;
  }

  .index2 {
    padding-bottom: 2.5rem
  }

  .index3_text {
    font-size: 1.1rem;
    padding: 0;
  }

  .index3 {
    padding: 4.5rem 0 5rem 0;
  }

  .index3_bottom div,
  .index3_bottom a {
    font-size: 1.1rem;
    width: 12rem;
    height: 3rem;
    margin: 0;
  }

  .index3_bottom {
    justify-content: space-between;
    padding: 0 1.5rem;
  }

  .index3_bottom img {
    width: 1.5rem;
  }

  .news_ul {
    display: block;
    margin-top: 0;
    padding-top: .5rem;
  }

  .news_ul li {
    width: 100%;
    margin-right: 0;
    margin-top: 2.5rem;
  }

  .news_ul li div {
    font-size: 1.1rem;
  }

  .news_ul li h3 {
    font-size: 1.2rem;
  }

  .news_ul li span {
    font-size: 1.1rem;
  }

  .index4 {
    padding: 4rem 0 4rem 0;
  }

  .index4_btn {
    width: 12rem;
    height: 3.2rem;
    font-size: 1.1rem;
  }

  .index5 ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 0 1.5rem;
  }

  .index5 li {
    width: 46%;
    margin-right: 0;
    margin-top: 1.5rem;
  }

  .index5 {
    padding: 3.5rem 0 4.5rem 0;
  }

  .index6 .width {
    display: block;
    text-align: center;
  }

  .index6_left span {
    font-size: 1.1rem;
  }

  .index6_right {
    display: block;
    margin-top: 2rem;
  }

  .index6_right a {
    font-size: 1.1rem;
    width: 12rem;
    height: 3rem;
    margin: 2rem auto 0 auto;
  }

  .footer ul {
    flex-wrap: wrap;
  }

  .footer li {
    width: 33.33%;
  }

  .footer li a {
    font-size: 1.1rem;
  }

  .footer li {
    border-bottom: none;
  }

  .footer ul {
    border-bottom: 1px solid #eaeaea;
  }

  .footer_bottom {
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .footer_bottom img {
    order: 1;
  }

  .footer_bottom div {
    width: 100%;
    order: 2;
    flex: auto;
    padding: 0;
    font-size: 1rem;
    margin-top: 1.5rem;
  }

  .footer_bottom {
    padding: 2rem 0 1.5rem 0;
  }

  /* #endregion */

  /* #region  内页*/
  .banner2 img {
    height: 10rem;
    object-fit: cover;
    object-position: center;
  }

  .banner2 {
    font-size: 1.8rem;
  }

  .se_tab {
    height: 5rem;
    font-size: 1.5rem;
  }

  .product_main {
    display: block;
  }

  .product_left {
    width: 100%;
    padding: 2rem 1.9% .1rem 1.9%;
  }

  .product_right {
    width: 100%;
    margin-top: 1.5rem;
  }

  .product_left li a {
    height: 2.6rem;
    font-size: 1.1rem;
  }

  .product_left li img {
    width: .45rem;
  }

  .product_main {
    padding: 2rem 0 4rem 0;
  }

  .product_ul {
    justify-content: space-between;
  }

  .product_ul li {
    width: 48.5%;
    margin-right: 0;
  }

  .product_ul h3 {
    font-size: 1.2rem;
  }

  .product_ul span {
    font-size: 1.1rem;
  }

  .page li {
    display: none;
    margin: 0 .8rem;
  }

  .page li:first-of-type,
  .page li:last-of-type {
    display: flex;
  }

  .page a {
    font-size: 1.1rem;
    min-width: 2.6rem;
    height: 2.6rem;
    padding: 0 1.5rem;
  }

  .pshow_top .width2 {
    display: block;
  }

  .pshow_left,
  .pshow_right {
    width: 100%;
  }

  .pshow_top {
    padding: 3rem 0 2.8rem 0;
  }

  .pshow_right {
    margin-top: 2rem;
  }

  .pshow_text,
  .pshow_row {
    font-size: 1.1rem;
  }

  .pshow_row div {
    height: 2.5rem;
    padding: 0 1.5rem;
  }

  .pshow_tab li {
    font-size: 1.2rem;
  }
 

  .pshow_tab li:hover {
    color: #333;
  }

  /* #endregion */

  /* #region  新闻  课程*/
  .news_main .news_ul {
    display: flex;
    justify-content: space-between;
  }

  .news_main .news_ul li {
    width: 48.5%;
    margin-top: 2.5rem;
  }

  .news_tab a {
    font-size: 1.2rem;
  }

  .nshow_card h1 {
    font-size: 24px;
  }

  .nshow_time,
  .page2,
  .nshow_text {
    font-size: 14px;
  }

  .nshow_card {
    padding: 28px 4.16% 30px 4.16%;
  }

  .nshow_text {
    margin-top: 24px;
    padding-top: 20px;
  }

  .nshow_time {
    margin-top: 17px;
  }

  .page2 {
    margin-top: 30px;
  }

  .nshow_main {
    padding: 25px 0 40px 0;
  }

  .video_ul {
    justify-content: space-between;
  }

  .video_ul li {
    width: 48.5%;
    margin-right: 0;
    margin-bottom: 2rem;
  }

  .video_ul h3 {
    font-size: 1.2rem;
  }

  .video_ul span {
    font-size: 1.1rem;
  }

  .video_main {
    padding: 2.5rem 0 4rem 0;
  }

  .video_popup {
    width: 90%;
  }

  .video_ptop div {
    font-size: 1.1rem;
  }

  .about3 .swiper-container .swiper-slide,
  .about1 {
    font-size: 1.1rem;
  }

  .about1 {
    margin-top: 2.5rem;
  }

  .about2 {
    display: block;
  }

  .about2 img,
  .about2 video {
    width: 100%;
  }
  .about2 .video {
    width: 100%;
  }

  .about2 img {
    margin-top: 1.5rem;
  }

  .about3 {
    margin-top: 2rem;
    padding-bottom: 6rem;
  }

  .about3 .swiper-container {
    width: auto;
    flex: 1;
    overflow: hidden;
  }

  .about3_prev:hover img:nth-of-type(1),
  .about3_next:hover img:nth-of-type(1) {
    opacity: 1;
  }

  .about3_prev:hover img:nth-of-type(2),
  .about3_next:hover img:nth-of-type(2) {
    opacity: 0;
  }

  /* #endregion */

  /* #region  联系我们  案例列表*/
  .contact_main {
    display: block;
  }

  .contact_left,
  .contact_right {
    width: 100%;
  }

  .contact_left {
    font-size: 1.1rem;
    padding: 0 5%;
  }

  .contact_phone {
    font-size: 1.7rem;
  }

  .contact_main {
    padding: 2.5rem 0 4rem 0;
  }

  .contact_right {
    margin-top: 2rem;
    height: 20rem;
  }

  .case_ul li {
    display: block;
    padding: 1rem;
  }

  .case_txt,
  .case_ul li img {
    width: 100%;
  }

  .case_txt {
    padding: 0;
    margin-top: 1.5rem;
    margin-bottom: .5rem;
  }

  .case_txt h3 {
    font-size: 1.4rem;
  }

  .case_txt div {
    font-size: 1.1rem;
    margin-top: 1rem;
  }

  .case_ul {
    padding: 0 0 4rem 0;
  }

  .case_ul2 {
    justify-content: space-between;
  }

  .case_ul2 li {
    width: 48%;
    margin-right: 0;
    margin-top: 1.3rem;
  }

  .product_left ul {
    display: flex;
    white-space: nowrap;
    overflow-x: auto;
  }

  .product_left li {
    margin-right: 2rem;
  }

  .product_left li:last-of-type{
    margin-right: 0;
  }

  .product_left li a {
    font-size: 1.2rem;
  }

  .product_left ul::-webkit-scrollbar {
    display: none;
  }
  .xz_back { 
    width: 100px;
    height: 38px;
    font-size: 15px; 
    }
    .xz_back img{
        width:17px;
    }
    .video_play{
        font-size: 16px;
        margin-top: 10px;
    }
  /* #endregion */

}


/* #region  */

/* #endregion */