@media screen and (max-width: 1000px) {
  body {
    padding-top: 0;
    overflow-x: hidden;
  }
  /* 固定*/
  .fixed-left {
    display: none;
  }
  .fixed-right {
    display: none !important;
  }
  .content-between {
    padding: 0 2%;
    width: 100%;
  }
  .content-big {
    width: 100%;
    padding: 0 2%;
  }
  .footer {
    background-size: 100% 100%;
  }
  .footer .foot {
    width: 100%;
    height: auto;
    flex-direction: column;
  }
  .footer .foot-left {
    width: 100%;
    /* text-align: center; */
  }
  .footer .contflex {
    width: 100%;
    margin-left: 0px;
  }
  .footer .lxinfo p {
    justify-content: left;
  }

  /* 头部 */
  .top-icon {
    display: none;
  }

  .banner .swiper-slide {
    height: 67vh;
  }

  .top-content {
    position: relative;
  }
  .header-nav {
    margin-right: 0;
    display: flex;
    justify-content: space-between;
    width: 90%;
  }
  .top-right .top-bottom .top-content {
    width: 100%;
  }
  .header-nav li {
    width: 25%;
    text-align: center;
  }
  .header-nav a {
    font-size: 12px;
    width: 100%;
    display: inline-block;
    text-align: center;
  }
  .top-right .top-header {
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
  }

  .top-right .top-header a {
    margin-right: 0;
    font-size: 12px;
    letter-spacing: -1px;
  }
  .top-right .top-header {
    text-align: left;
    padding: 0 5%;
    display: flex;
    justify-content: space-between;
    background: #ccc;
    color: #fff;
  }
  .top-left .login {
    width: 100%;
    height: auto;
  }
  .top-left a {
    padding-left: 5%;
    margin-right: 0;
  }
  /* banner */
  .product-banner {
    width: 100%;
    margin: 0 auto;
  }
  .product-banner .product-banner-title {
    font-size: 20px;
  }
  .product-banner .product-banner-text {
    font-size: 16px;
  }
  .banner_text {
    width: 100%;
  }
  .product-banner img {
    width: 100%;
    height: 300px;
  }
  /* 内容 */
  .substance {
    display: flex;
    flex-direction: column-reverse;
    width: 100%;
  }
  .substance-left {
    width: 100%;
    margin-top: 20px;
  }
  .substance-center .substance-center-product .item {
    height: auto;
  }
  .substance-center .substance-center-product .item img {
    width: 100%;
  }
  .substance-submit .item {
    height: auto;
  }
  .substance-submit .item img {
    width: 100%;
  }
  .substance-right {
    width: 100%;
  }

  .substance-top-right {
    width: 100%;
  }
  .product-carbon-pic li {
    width: 33%;
    height: auto;
  }
  .steel-expert {
    background-size: 100% 100%;
  }
  .steel-expert img {
    width: 100px;
    height: 100px;
    margin-top: 50px;
    margin-right: 10px;
  }
  .product-carbon li {
    width: 19%;
  }
  .product-carbon li .start {
    width: 100%;
  }

  .product-quality-ul li {
    width: 24%;
  }
  .product-quality-ul li .product-quality-top {
    width: 100%;
  }
  .product-quality-ul li .product-quality-top img {
    width: 100%;
  }
  .substance-top-left .data-time {
    right: -10px;
  }
  .substance-top-right .substance-left-center a {
    width: 45%;
    font-size: 12px;
  }
  .substance-left-footer .share-item img {
    margin-right: 1px;
  }
  .steel-expert-right .stell-top,
  .steel-expert-right .stell-bottom {
    display: none;
  }
  .steel-expert .title {
    line-height: 20px;
    padding: 20px 0;
  }
  .product-carbon li .start p {
    font-size: 12px;
  }
  .substance-right-top {
    flex-direction: column;
    margin-top: 20px;
  }
  .substance-top-left .items .swiper-container,
  .substance-top-left .prodect-img {
    width: 100%;
    height: 100%;
  }
  .substance-top-left .swiper-slide,
  .substance-top-left .items {
    width: 100%;
    height: auto;
  }
  .substance-top-left .onevieobox {
    height: auto;
  }
  .substance-top-left .video {
    height: auto;
  }
  .substance-top-left {
    width: 100%;
    height: auto;
  }
  .substance-top-left .swiper-pagination-fraction {
    left: 0;
  }
  .content-title {
    overflow: hidden;
  }
  .top-right .top-header a span {
    display: none;
  }

  .dhbtn {
    position: absolute;
    top: 15px;
    right: 3%;
    border-radius: 4px;
    background: url(../images/d1.webp) no-repeat center center #2b48b4;
    background-size: 20px;
    width: 30px;
    height: 30px;
  }
  /* 移动端 */
  .top-right .top-bottom .top-content {
    display: none;
  }
  .dhbtn {
    display: block;
  }
  .nav {
    display: none;
  }
  .nav {
    position: fixed;
    width: 100%;
    height: 100%;
    z-index: 100;
    top: 0px;
    left: 0;
    background: #000;
    overflow: auto;
  }
  .nav .close {
    width: 20px;
    position: absolute;
    right: 20px;
    top: 20px;
  }
  .dhbtn.on {
    background: url(../images/d2.webp) no-repeat center center #2b48b4;
    background-size: 20px;
  }
  .nav ul {
    padding: 0;
    margin-top: 60px;
  }
  .nav li {
    float: none;
    width: 100%;
    text-align: center;
    border-bottom: 1px solid #666;
  }
  .nav h3 a {
    font-weight: bold;
    line-height: 55px;
    font-size: 16px;
  }
  .nav .on h3 a {
    color: #ffba01;
    font-weight: bold;
    line-height: 55px;
    font-size: 16px;
    text-align: center;
    position: relative;
  }
  .nav .on h3 a:before {
    bottom: 0;
  }
  .nav .on h3 a:before {
    position: absolute;
    content: '';
    border-bottom: 4px solid #ffba01;
    border-radius: 2px;
    width: 60px;
    bottom: -20px;
    color: #ffba01;
    left: 50%;
    transform: translateX(-50%);
  }
  /* 404页面 */
  .feedback-back .nones-dialog {
    width: 85%;
    margin-left: -42.5%;
    top: 20%;
  }
  .feedback-back .nones-dialog .nones-img {
    width: 100%;
  }
  .feedback-back .nones-dialog .title {
    font-size: 20px;
    margin-bottom: 20px;
  }
  .feedback-back .nones-dialog .content {
    font-size: 14px;
    line-height: 30px;
  }
  .feedback-back .nones-dialog .special {
    margin-left: 0;
  }
  .nones-dialog .bottom a {
    width: 32%;
    font-size: 12px;
    height: 36px;
    line-height: 36px;
  }
  /* 谢谢页面 */
  .thank-left {
    width: 50%;
  }
  .thank-left .logo-img {
    width: 50%;
    height: auto;
  }
  .thank-right {
    width: 50%;
    padding: 50% 3%;
  }
  .thank-right .title {
    font-size: 40px;
  }
  .thank-right .content {
    font-size: 18px;
    line-height: 26px;
    margin: 50px 0px;
  }
  .thank-right .btn a {
    width: 45%;
    height: 50px;
    line-height: 50px;
    font-size: 12px;
  }
  /* 新闻详情 */
  .news-banner img {
    height: 400px;
  }
  .news-detail {
    width: 100%;
    padding: 0 2%;
  }
  .news-detail .news-img {
    height: auto;
  }

  /* 项目页面 */
  .p_list .p_loopitem {
    flex-grow: 0;
    flex-shrink: 0;
    flex-basis: calc(100% / 2);
    position: relative;
  }
  .e_container-7 {
    margin-right: 0;
  }
  /* 关于我们 */
  .contacts-address {
    flex-direction: column;
  }
  .contacts-address .address {
    width: 100%;
    padding: 5% 2%;
  }
  .contacts-address .address h2 {
    font-size: 20px;
    text-align: center;
    padding-bottom: 20px;
  }
  .contacts-address .address-item a {
    line-height: 20px;
    margin-left: 0;
    font-size: 16px;
  }
  .contacts-address .address-item img {
    width: 20px;
  }
  .contacts-address .map {
    width: 100%;
  }
  .contacts-address .map img {
    width: 100%;
  }
  .contacts-address .map .map_img {
    width: 20px;
  }
  .contacts-address .map_address {
    flex-direction: column;
    margin-top: 0;
    margin-left: 0;
  }
  .point {
    display: none;
  }
  .case {
    padding-left: 10%;
    bottom: 50%;
  }
  .case .case-item .title {
    font-size: 14px;
  }
  .case .case-item .name {
    font-size: 12px;
  }
  .case .case-item .fang {
    top: 0%;
    left: 90%;
    font-size: 12px;
  }
  /* 新闻列表页 */
  .news-top {
    flex-direction: column;
    height: auto;
  }
  .news-top .news-top-left .items {
    width: 100%;
  }
  .news-top-right {
    width: 100%;
  }
  .list-item {
    flex-direction: column;
  }
  .list-item-left {
    width: 100%;
  }
  .length-line {
    margin-bottom: 30px;
  }
  .related a {
    font-size: 20px;
  }
  .news-list .news-list-item .news-img {
    width: 30%;
  }
  .list-item-left .news-list .news-list-item {
    padding: 2%;
  }
  .news-content {
    width: 65%;
  }
  .news-content .title {
    font-size: 14px;
  }
  .news-content .name {
    font-size: 12px;
  }
  .news-content .time {
    font-size: 12px;
  }
  .list-item-right {
    width: 100%;
    margin-top: 0;
  }
  /* 关于我们 */
  .about-top-item {
    width: 100%;
  }
  .about-rights {
    display: none;
  }
  .about-bottoms .name1 {
    font-size: 26px;
  }
  .product-infor .product-infor-content .title {
    font-size: 26px;
  }
  .product-infor .product-infor-content .name img {
    width: 20%;
  }
  .content-bigSpecail {
    width: 100%;
  }
  .product-infor .product-infor-content {
    left: 0;
    margin-left: 0;
  }
  .services-lists-item {
    width: 28%;
  }
  .services-lists-item .services-lists-img {
    width: 100%;
    /* height: auto; */
    height: 150px;
  }
  .services-lists-item .name {
    font-size: 12px;
    margin-top: 0;
  }
  .corporate .corporate-bottom {
    padding: 2% 5%;
  }
  .services-lists-item .bottom {
    margin: 10px 0;
  }
  .corporate .corporate-bottom a {
    font-size: 12px;
    line-height: 16px;
  }
  /* 首页 */
  .banner_text_index {
    width: 100%;
    font-size: 28px;
    text-align: center;
  }
  .advantage-lists {
    width: 100%;
  }
  .advantage-lists .item {
    height: auto;
  }
  .advantage-lists .item p {
    text-align: center;
    width: 100%;
    height: auto;
    padding: 0 5%;
  }
  .Customer-bot {
    display: flex;
    flex-direction: column;
  }
  .Customer-bot {
    padding-bottom: 80px;
    padding-top: 60px;
  }
  .Customer-left {
    width: 100%;
  }
  .Customer-left .showImg-items {
    width: 60%;
  }
  .Customer-left .showImg-items img {
    width: 100%;
  }
  .Customer-left .Customer-content {
    padding: 5% 5%;
    width: 50%;
  }
  .Customer-right-list {
    position: relative;
  }
  .Customer-right {
    width: 100%;
    position: initial;
  }
  .Customer-content .name {
    font-size: 16px;
  }
  .Customer-right-list .swiper-button-prev,
  .Customer-right-list .swiper-container-rtl .swiper-button-next {
    left: 0;
  }
  .Customer-right-list .swiper-button-next,
  .Customer-right-list .swiper-container-rtl .swiper-button-prev {
    left: 133px;
  }
  .banner img {
    height: 728px;
    width: auto;
    overflow: hidden;
  }
  .about-infor .about-infor-content {
    left: 0;
    margin-left: 0;
    padding: 0 5%;
  }

  .about-infor-item {
    display: flex;
    flex-direction: column;
  }
  .about-infor .about-infor-content .left {
    width: 100%;
    height: auto;
    background: #ffffff;
    padding: 5% 5%;
  }
  .about-infor-item .right {
    position: inherit;
    width: 100%;
    margin-top: 20px;
  }

  .about-infor .bg2 {
    height: 41rem;
  }
  .infor-bottom {
    position: initial;
    width: 100%;
    padding: 10% 0;
  }
  .advantage-content {
    display: none;
  }
  .infor-bottom .items h2 {
    font-size: 26px;
  }
  .infor-bottom .items p {
    font-size: 12px;
  }
  .Customer-content .cicle {
    margin-top: 10px;
  }
  .Customer-right .Customer-right-div {
    padding-left: 2%;
  }
  .Customer-right .line {
    margin-left: 2%;
  }
  .Customer-right h2 {
    font-size: 40px;
    text-align: left;
    padding-left: 0;
  }
  .corporate .product-list {
    padding: 5%;
  }
  .Customer-right .content {
    text-align: left;
  }
  .services-lists {
    padding: 0 5%;
    flex-wrap: wrap;
    margin-top: 10%;
  }
  .product-lists .item {
    width: 100%;
  }
  .product-lists .item img {
    width: 100%;
  }
  .replay-box {
    left: 0;
    bottom: 0;
    width: 100%;
  }
  .product-quality-ul li .product-quality-box img {
    margin: 34px 0 10px 0;
  }
  .product-quality-ul li .product-quality-texts {
    font-size: 12px;
  }
  .content-title table th {
    font-size: 12px;
  }
  .content-title table td {
    font-size: 12px;
    line-height: 20px;
    padding: 10px 0;
  }
  .zhezi {
    width: 100%;
  }
  #bigimghnre img {
    width: 80%;
    height: auto;
  }
  .banner_text_index h2 {
    font-size: 32px;
  }
  .product-infor .product-listt .list-item {
    padding: 0;
    height: 300px;
  }
  .product-infor .product-listt .list-item .back {
    top: 0;
    left: 0;
    width: 100%;
    height: 300px;
    line-height: 500px;
  }
  .netword .address {
    display: none;
  }
  .p_list .video-items {
    width: 100%;
  }
  .p_list .video-items .onevieobox {
    width: 100%;
  }
  .corporate .specai-white {
    height: auto;
    min-height: 400px;
  }
  .newsindex .product-infor-content .content {
    font-size: 12px;
  }
  .newsindex .corporate-bottom .name {
    font-size: 14px;
  }
  .advantage-lists .item {
    width: 33.33%;
  }
}
@media screen and (min-width: 100px) and (max-width: 1900px) {
  .Customer-bot {
    display: flex;
    flex-direction: column;
  }
  .Customer-bot {
    padding-bottom: 80px;
    padding-top: 60px;
  }
  .Customer-left {
    width: 100%;
  }
  .Customer-left .showImg-items {
    width: 60%;
  }
  .Customer-left .showImg-items img {
    width: 100%;
  }
  .Customer-left .Customer-content {
    padding: 5% 5%;
    width: 50%;
  }
  .Customer-right-list {
    position: relative;
  }
  .Customer-right {
    width: 100%;
    position: initial;
  }
  .Customer-content .name {
    font-size: 16px;
  }
  .Customer-right-list .swiper-button-prev,
  .Customer-right-list .swiper-container-rtl .swiper-button-next {
    left: 0;
  }
  .Customer-right-list .swiper-button-next,
  .Customer-right-list .swiper-container-rtl .swiper-button-prev {
    left: 133px;
  }
  .Customer-right .Customer-right-div {
    padding-left: 2%;
  }
  .Customer-right .line {
    margin-left: 2%;
  }
  .Customer-right h2 {
    font-size: 40px;
    text-align: left;
    padding-left: 0;
  }
  .Customer-right .content {
    text-align: left;
  }
  .banner {
    height: auto;
  }
  .icon-img {
    height: auto;
  }
  .icon-img .icon-list {
    padding: 20px;
    width: 100%;
    display: flex;
    flex-direction: column;
  }
  .icon-img .icon-list img {
    margin-bottom: 30px;
  }
}