@media screen and (min-width: 768px) and (max-width: 1199px) {
  .main_middle {
    width: 100%;
  }

  /* phone_menu_container */
  .phone_menu_container {
    position: fixed;
    top: 0;
    display: block;
    width: 100vw;
    height: 0;
    background-color: #fff;
    z-index: 9999;
    transition: height 300ms ease;
    overflow: hidden;
  }

  .phone_menu_top {
    height: 1.2rem;
    padding: 0 0.5rem;
  }

  .phone_menu_top .phone_menu_logo {
    width: 100%;
    height: 0.96rem;
  }

  .phone_menu_top .phone_menu_logo img {
    height: 100%;
  }

  .phone_menu_top .phone_menu_close {
    position: relative;
    top: 0;
    right: 0.05rem;
    width: 0.6rem;
    height: 0.6rem;
  }

  .phone_menu_top .phone_menu_close::before,
  .phone_menu_top .phone_menu_close::after {
    position: absolute;
    top: 0.3rem;
    width: 0.6rem;
    height: 2px;
    content: '';
    display: block;
    transform: rotateZ(45deg);
    transform-origin: center;
    background-color: #DF0000;
  }

  .phone_menu_top .phone_menu_close::after {
    transform: rotateZ(-45deg);
  }

  /* phone_menu_ul */
  .phone_menu_ul {}

  .phone_menu_li {
    border-bottom: 1px solid #eee;
  }

  .phone_menu_li .pml_main {
    height: 1rem;
    padding: 0 0.4rem 0 0.8rem;
  }

  .phone_menu_li .pml_main a {
    font-size: 0.3rem;
  }

  /* phone_roof */
  .phone_roof {
    position: fixed;
    display: flex;
    top: 0;
    width: 100vw;
    height: 1.2rem;
    padding: 0 0.5rem;
    justify-content: space-between;
    z-index: 999;
    background-color: rgba(255, 255, 255, 0.8);
  }

  .phone_roof .phone_main_logo {
    height: 80%;
  }

  .phone_roof .phone_main_logo img {
    height: 100%;
  }

  .phone_roof .phone_logo_right {
    position: relative;
    display: block;
    width: 0.6rem;
    height: 0.4rem;
  }

  .phone_roof .phone_logo_right::before {
    position: absolute;
    top: 0;
    content: '';
    display: block;
    width: 0.6rem;
    height: 2px;
    background-color: #DF0000;
  }

  .phone_roof .phone_logo_right .logo_r_line {
    position: absolute;
    top: 50%;
    width: 0.6rem;
    height: 2px;
    transform: translateY(-50%);
    background-color: #DF0000;
  }

  .phone_roof .phone_logo_right::after {
    position: absolute;
    bottom: 0;
    content: '';
    display: block;
    width: 0.6rem;
    height: 2px;
    background-color: #DF0000;
  }

  /* for_pc_roof */
  .for_roof {
    display: block;
    height: 1.2rem;
  }

  /* page_roof_container */
  .page_roof_container {
    display: none;
  }

  /* banner */
  .swiper-container {
    margin-top: 0 !important;
  }

  .swiper-pagination {
    gap: 0.2rem;
    bottom: 0.2rem !important;
  }

  .swiper-pagination .my-bullet {
    margin: 0;
    width: 0.6rem;
    height: 0.14rem;
  }

  /* title_subject */
  .title_subject {
    font-size: 1rem;
    line-height: 1.2;
  }

  .title_subject h3 {
    font-size: 0.3rem;
  }

  /* pro_wrapper */
  .pro_wrapper {
    padding: 0.5rem 0.24rem;
  }

  .pro_headline {
    height: auto;
    margin-bottom: 0.4rem;
  }

  .pro_headline span {
    width: calc(100vw - 0.48rem);
    height: 1.4rem;
  }

  .pro_catalog {
    flex-direction: column;
    gap: 0.2rem;
    margin-bottom: 0.4rem;
  }

  .pro_catalog ul {
    justify-content: space-between;
    gap: 0.6rem;
  }

  .pro_catalog ul li {
    font-size: 0.3rem;
  }

  .pro_catalog .pro_more {
    gap: 0.1rem;
    width: auto;
    height: 0.6rem;
    padding: 0 0.2rem;
    font-size: 0.24rem;
  }

  .pro_catalog .pro_more img {
    width: 0.24rem;
    height: 0.24rem;
  }

  .pro_main {
    gap: 0.4rem;
  }
  
  .pro_main_item {
    width:100%
  }

  .pro_main_headline {
    height: 0.6rem;
    margin-top: 0.3rem;
    margin-right: 0.3rem;
  }

  .pro_main_headline .pmh_name {
    font-size: 0.3rem;
  }

  .pro_main_headline .pmh_more {
    font-size: 0.24rem;
  }

  .pro_main_headline .pmh_img {
    width: 0.24rem;
    height: 0.24rem;
  }

  .pro_main_headline .pmh_img::before {
    width: 0.24rem;
    height: 0.24rem;
  }

  .pro_main_item:hover .pro_main_headline .pmh_img {
    width: 0.6rem;
    height: 0.6rem;
  }

  /* about-wrapper */
  .about_wrapper {
    height: auto;
    padding: 0.6rem 0.24rem;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  .about_wrapper .main_middle {
    flex-direction: column;
  }

  .about_left {
    width: 100%;
    padding: 0;
  }

  .about_left .title_subject {
    margin-bottom: 0.2rem;
  }

  .about_left .about_main {
    margin-bottom: 0.3rem;
    padding-bottom: 0.4rem;
    font-size: 0.28rem;
    -webkit-line-clamp: 10;
  }

  .about_left .about_more {
    font-size: 0.24rem;
  }

  .about_left .about_more img {
    width: 0.24rem;
    height: 0.24rem;
  }

  .about_right {
    display: none;
  }

  /* about_num */
  .about_num {
    flex-direction: column;
    height: auto;
  }

  .about_num_item {
    font-size: 0.26rem;
  }

  .about_num_item .ani_top {
    margin-bottom: 0.3rem;
  }

  .about_num_item .ani_top span {
    font-size: 1.2rem;
  }

  .about_num_item:nth-of-type(1) .ani_top span {
    width: auto;
  }

  .about_num_item:nth-of-type(2) .ani_top span {
    width: auto;
  }

  .about_num_item:nth-of-type(3) .ani_top span {
    width: auto;
  }

  .about_num_item:nth-of-type(4) .ani_top span {
    width: auto;
  }

  .about_num_item .ani_bottom {
    font-size: 0.26rem;
  }

  /* case_wrapper */
  .case_wrapper {
    margin-bottom: 1rem;
  }

  .case_headline {
    flex-direction: column;
    gap: 0.2rem;
    padding: 0 0.24rem 0.24rem;
  }

  .case_main {
    width: 100%;
  }

  .case_main .case_title {
    margin: 0.3rem 0 0.16rem;
    font-size: 0.4rem;
  }

  .case_main .case_info {
    font-size: 0.24rem;
    line-height: 1.2;
    -webkit-line-clamp: 10;
  }

  .case_cut {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding: 0 0.24rem;
    margin-bottom: 0.3rem;
  }

  .case_cut .case_cut_pre {
    width: 0.3rem;
    height: 0.2rem;
  }

  .case_cut .case_cut_next {
    width: 0.3rem;
    height: 0.2rem;
  }

  .case_img {
    height: auto;
    padding: 0 0.24rem;
    border-radius: 0.2rem;
  }

  /* news_wrapper */
  .news_wrapper {
    margin-bottom: 0.5rem;
  }

  .news_headline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: auto;
    padding: 0 0.24rem;
    margin-bottom: 0.5rem;
  }

  .news_headline .news_more {
    width: 1.3rem;
    height: 1.3rem;
  }

  .news_headline .news_more img {
    width: 0.4rem;
    height: 0.4rem;
  }

  .news_main {
    gap: 0;
  }

  .news_list {}

  .news_list .news_item {
    flex-direction: column;
    padding: 0.5rem 0.3rem;
  }

  .news_list .news_item:hover {
    padding: 0 0.3rem;
  }

  .news_list .news_item .news_date {
    margin-right: 0;
    font-size: 0.3rem;
  }

  .news_list .news_item .news_subject {
    margin-right: 0;
  }

  .news_list .news_item .news_subject .news_subject_title {
    font-size: 0.3rem;
  }


  .news_list .news_item .news_subject .news_subject_info {
    font-size: 0.24rem;
    line-height: 1.3;
    -webkit-line-clamp: 10;
  }

  .news_list .news_item:hover .news_subject .news_subject_info {
    color: #fff;
  }

  .news_list .news_item::after {
    display: none;
  }

  .news_img {
    display: none;
  }

  /* partner_wrapper */
  .partner_wrapper {
    margin-bottom: 1rem;
  }

  .partner_headline {
    margin-bottom: 0.3rem;
    font-size: 1rem;
    line-height: 1;
  }

  .partner_headline h3 {
    margin: 0.2rem 0 0.1rem;
    font-size: 0.3rem;
  }

  .partner_headline h6 {
    font-size: 0.24rem;
    line-height: 1.2;
  }

  .partner_track {
    display: flex;
    gap: 0.5rem;
  }

  .partner_item {
    width: 2rem;
    height: 1.5rem;
  }

  /* bottom_wrapper */
  .bottom_wrapper {
    position: static;
    height: auto;
    padding-top: 0;
  }

  .bottom_wrapper_inside {
    height: auto;
    padding-top: 0.4rem;
  }

  /* brand */
  .bottom_brand {
    position: static;
    top: 0;
    left: 0;
    flex-direction: column;
    height: auto;
    padding: 0.24rem;
    transform: translateX(0);
    border-radius: 0;
  }

  .brand_left {
    width: 100%;
  }

  .brand_left .brand_t {
    font-size: 0.6rem;
  }

  .brand_left .brand_nr {
    font-size: 0.3rem;
  }

  .brand_right {
    gap: 4px;
    justify-content: center;
    width: auto;
  }

  .brand_right img {
    width: 32%;
    height: auto;
  }

  /* bottom_box */
  .bottom_box {
    flex: 1;
    flex-wrap: wrap;
  }

  .bottom_box .bottom_left {
    gap: 0.2rem;
    flex-direction: column;
    padding: 0.3rem 0.24rem;
  }

  .bottom_box .bottom_left dl {
    min-width: auto;
  }

  .bottom_box .bottom_left dl dt {
    margin-bottom: 0.3rem;
    font-size: 0.32rem;
  }

  .bottom_box .bottom_left dl dd {
    margin-bottom: 0.3rem;
  }

  .bottom_box .bottom_left dl:nth-of-type(3) dd {
    max-width: auto;
    margin-bottom: 0.3rem;
  }

  .bottom_box .bottom_left dl dd a {
    color: #FFFFFF;
    opacity: 0.6;
  }

  .bottom_box .bottom_right {
    gap: 16px;
    color: #fff;
  }

  .bottom_box .bottom_right p {
    font-size: 0.24rem;
  }

  /* bottom_footer */
  .bottom_footer {
    flex-direction: column;
    align-items: flex-start;
    height: auto;
    margin-top: 0.24rem;
    padding: 0.24rem;
    font-size: 0.24rem;
  }

  /* ny_banner */
  .ny_banner {
    position: relative;
    height: 3.4rem;
    margin-top: 0;
  }

  .ny_banner_inner {
    width: 100%;
    height: 3.4rem;
  }

  .ny_banner_inner h2 {
    font-size: 0.5rem;
  }

  .ny_banner_inner h3 {
    font-size: 0.3rem;
  }

  /* inside_main */
  .inside_main {
    margin-top: 1rem;
    margin-bottom: 1rem;
    padding: 0 0.24rem;
  }

  /* inside_catalog */
  .inside_catalog {
    gap: 0.4rem;
    margin-bottom: 0.4rem;
  }

  .inside_catalog ul {
    flex-wrap: wrap;
    gap: 0.2rem;
  }

  .inside_catalog ul li {
    padding: 0.1rem 0.3rem;
    border-radius: 0.5rem;
  }

  .inside_catalog ul li:hover {
    background-color: #DF0000;
  }

  .inside_catalog ul li a {
    font-weight: bold;
    color: #FFF;
  }

  /* inside_about */
  .inside_about {
    gap: 3%;
    flex-direction: column;
    padding: 0 0.24rem;
  }

  .inside_about_left {
    width: 100%;
  }

  .inside_about_main {
    font-size: 0.26rem;
  }

  /* product_main */
  .product_main {
    padding: 0 0.24rem;
    gap: 0.2rem;
  }

  .pm_single {
    width: 100%;
  }

  .pm_single .pm_title {
    top: 0.4rem;
    right: 0.3rem;
    font-size: 0.36rem;
  }

  .pm_single .pm_more {
    left: 0.4rem;
    bottom: 0.4rem;
    1` width: 0.8rem;
    height: 0.8rem;
  }

  /* inside_picture_detail */
  .inside_picture_detail {
    padding: 0 0.24rem;
  }

  .inside_picture_detail .ipd_title {
    padding-bottom: 0.3rem;
    font-size: 0.4rem;
  }

  .inside_picture_detail .ipd_main {
    padding-top: 0.5rem;
  }

  /* popup_img_wrapper */
  .popup_img_wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding-top: 5vh;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 9999;
    display: none;
  }

  .popup_close {
    text-align: right;
    padding-right: 2vw;
    cursor: pointer;
  }

  .popup_img {
    max-width: 90vw;
    height: auto;
  }

  /* inside_news */
  .inside_news {
    flex-direction: column;
    padding: 0 0.24rem;
  }

  .inside_news_item {
    width: 100%;
    margin-bottom: 0.24rem;
    padding: 0.24rem;
  }

  .inside_news_item .news_m_date p {
    margin-right: 0.1rem;
    font-size: 0.4rem;
  }

  .inside_news_item .news_m_date span {
    font-size: 0.24rem;
    line-height: 1.4;
  }

  .inside_news_item .news_m_title {
    margin: 0.24rem 0;
    font-size: 0.26rem;
  }

  .inside_news_item .news_m_content {
    margin-bottom: 0;
    font-size: 0.24rem;
  }

  /* inside_news_detail */
  .inside_news_detail {
    padding: 0 0.24rem;
  }

  .inside_news_detail .ind_title_wrapper {
    margin-bottom: 0.5rem;
    padding-bottom: 0.3rem;
  }

  .inside_news_detail .ind_title_wrapper .ind_title {
    margin-bottom: 0.4rem;
    font-size: 0.4rem;
    line-height: 1.3;
  }

  .inside_news_detail .ind_title_wrapper .ind_info {
    font-size: 0.24rem;
  }

  .inside_news_detail .ind_main {
    font-size: 0.24rem;
  }

  .inside_news_detail .ind_title_wrapper .ind_info span {
    margin: 0 0.1rem;
  }


  /* inside_contact */
  .inside_contact {
    flex-direction: column;
    margin-bottom: 1rem;
    padding: 0 0.24rem;
  }

  .inside_map {
    width: 100%;
    height: auto;
    margin-bottom: 0.5rem;
  }

  .contact_content {
    width: 100%;
  }

  .contact_content h1 {
    margin-bottom: 0.3rem;
    font-size: 0.5rem;
  }

  .contact_content h2 {
    margin-bottom: 0.3rem;
    padding-bottom: 0.3rem;
    font-size: 0.34rem;
  }

  .contact_content p {
    font-size: 0.3rem;
  }

  /* 给我们留言 */
  .inside_message {
    flex-direction: column;
    padding: 0 0.24rem;
  }

  .inside_message .inside_form_input {
    margin-bottom: 0.3rem;
    width: 100%;
  }

  .inside_message .inside_form_input .inside_ipt {
    height: 1rem;
    font-size: 0.26rem;
    padding: 0 0.3rem;
  }

  .inside_message .inside_form_textarea {
    margin-bottom: 0.5rem;
  }

  .inside_message .inside_form_textarea .inside_area {
    height: 3rem;
    padding: 0.2rem 0.3rem;
    font-size: 0.26rem;
  }

  .inside_message .inside_form_btn .inside_btn {
    padding: 0.25rem 1rem;
    font-size: 0.26rem;
  }
}