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

  /* phone_menu_container */
  .phone_menu_container {
    position: fixed;
    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: #04CBC8;
  }

  .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 0.2rem;
  }

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

  .phone_menu_li .pml_main span {
    width: 1rem;
    text-align: right;
    font-size: 0.44rem;
    font-weight: lighter;
    font-family: "Microsoft YaHei";
  }

  .phone_menu_li .pml_list {
    height: 0;
    transition: height 300ms ease;
    overflow: hidden;
  }

  .phone_menu_li .pml_list li {
    display: block;
    height: 0.8rem;
    padding: 0 0.5rem;
    line-height: 0.8rem;
    font-size: 0.28rem;
  }

  /* 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: #04CBC8;
  }

  .phone_roof .phone_logo_right .logo_r_line {
    position: absolute;
    top: 50%;
    width: 0.6rem;
    height: 2px;
    transform: translateY(-50%);
    background-color: #04CBC8;
  }

  .phone_roof .phone_logo_right::after {
    position: absolute;
    bottom: 0;
    content: '';
    display: block;
    width: 0.6rem;
    height: 2px;
    background-color: #04CBC8;
  }

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

  /* right_float */
  .right_float {
    position: fixed;
    right: 0.24rem;
    bottom: 15%;
    width: 1rem;
    height: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    background-color: rgba(4, 203, 200, 0.5);
  }

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

  /* banner */
  .swiper-container img {
    width: 100%;
  }

  .swiper-pagination {
    bottom: 2vw !important;
  }

  .swiper-pagination .my-bullet {
    margin: 0 0.3vw;
    width: 2vw;
    height: 0.3vw;
    border-radius: 0.2vw;
    background-color: #fff;
  }

  .swiper-pagination .my-bullet-active {
    background-color: #04cbc8;
  }

  /* index_title */
  .index_title {
    height: 1rem;
  }

  .index_title .index_title_main h2 {
    font-size: 0.6rem;
  }

  .index_title .index_title_main span {
    top: 0.1rem;
    left: 0.2rem;
    font-size: 0.6rem;
  }

  .index_title .index_title_more {
    height: 0.6rem;
  }

  .index_title .index_title_more::before {
    transform: translateX(-0.4rem);
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 0.3rem;
  }

  .index_title .index_title_more:hover::before {
    width: 2.2rem;
  }

  .index_title .index_title_more::after {
    transform: translate(-0.3rem, -50%);
    width: 0.2rem;
    height: 0.2rem;
  }

  .index_title .index_title_more span {
    font-size: 0.22rem;
    line-height: 0.6rem;
  }

  /* product_container */
  .product_container {
    margin-top: 0.7rem;
    margin-bottom: 0.7rem;
    padding: 0 0.24rem;
  }

  /* product_wrapper */
  .product_wrapper {
    margin-top: 0.4rem;
  }

  .product_item {
    width: 48%;
    height: calc(48% * 0.88);
    margin: 0 0 0.3rem 0;
  }

  .product_item .product_natant {
    height: 1.4rem;
  }

  .product_item .product_natant .natant_title {
    top: 0.6rem;
    left: 0.24rem;
    font-size: 0.3rem;
  }

  .product_item .product_natant .natant_more {
    top: 0.44rem;
    right: 0.24rem;
    height: 0.6rem;
  }

  .product_item .product_natant .natant_more::after {
    width: 0.2rem;
    height: 0.2rem;
  }

  .product_item .product_natant .natant_more span {
    right: 0.4rem;
    font-size: 0.22rem;
    line-height: 0.6rem;
  }

  .product_item_active .product_natant {
    height: 100%;
  }

  .product_item_active .product_natant .natant_title {
    top: 2rem;
    left: 0.4rem;
    font-size: 0.4rem;
  }

  .product_item_active .product_natant .natant_content {
    top: 2.8rem;
    padding: 0 0.4rem;
    font-size: 0.26rem;
  }

  .product_item_active .product_natant .natant_more {
    top: 5.3rem;
    right: 4.8rem;
  }

  .product_item_active .product_natant .natant_more::before {
    left: -0.7rem;
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 0.3rem;
  }

  .product_item_active .product_natant .natant_more:hover::before {
    width: 2.2rem;
  }

  .product_item_active .product_natant .natant_more::after {
    right: 1.5rem;
  }

  .product_item_active .product_natant .natant_more span {
    right: 0;
  }

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

  /* about_headline_wrapper */
  .about_headline_wrapper {
    height: 3rem;
    margin-bottom: 0.4rem;
    padding: 0 0.24rem;
  }

  .about_headline .about_headline_main h2 {
    margin-bottom: 0.2rem;
    font-size: 0.6rem;
  }

  .about_headline .about_headline_main span {
    font-size: 0.3rem;
  }

  .about_headline .about_headline_more {
    height: 0.6rem;
  }

  .about_headline .about_headline_more::before {
    transform: translateX(-0.4rem);
    content: '';
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 0.3rem;
  }

  .about_headline .about_headline_more:hover::before {
    width: 2.2rem;
  }

  .about_headline .about_headline_more::after {
    transform: translate(-0.2rem, -50%);
    width: 0.2rem;
    height: 0.2rem;
  }

  .about_headline .about_headline_more span {
    font-size: 0.22rem;
    line-height: 0.6rem;
  }

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

  .about_main {
    width: 48%;
    padding-top: 0;
  }

  .about_main .about_title {
    width: 100%;
    margin-bottom: 0.3rem;
    font-size: 0.8rem;
  }

  .about_main .about_content {
    margin-bottom: 0.5rem;
    font-size: 0.26rem;
  }

  .about_main .about_more {
    height: 0.6rem;
  }

  .about_main .about_more::before {
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 0.3rem;
  }

  .about_main .about_more:hover::before {
    width: 2.2rem;
  }

  .about_main .about_more::after {
    transform: translate(0.2rem, -50%);
    width: 0.2rem;
    height: 0.2rem;
  }

  .about_main .about_more span {
    left: 0.5rem;
    font-size: 0.22rem;
    line-height: 0.6rem;
  }

  .about_image {
    width: 48%;
    position: relative;
    margin-top: 0.3rem;
  }

  .about_image .about_img {
    width: 100%;
  }

  .about_image .about_image_natant {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 94%;
    height: 1.5rem;
    padding-left: 0;
    font-size: 0.9rem;
    line-height: 1.5rem;
    writing-mode: horizontal-tb;
  }

  /* declare_container */
  .declare_container {
    margin-bottom: 0.7rem;
  }

  /* declare_headline */
  .declare_headline {
    height: 6rem;
  }

  .declare_headline h1 {
    margin-bottom: 0.2rem;
    font-size: 0.8rem;
  }

  .declare_headline h2 {
    width: 60vw;
    margin-bottom: 0.3rem;
    font-size: 0.8rem;
  }

  .declare_headline h2 .declare_headline_left,
  .declare_headline h2 .declare_headline_right {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    content: '';
    width: 113px;
    height: 16px;
    overflow: hidden;
  }

  .declare_headline h2 .declare_headline_left {
    top: -0.5rem;
    left: 0;
  }

  .declare_headline h2 .declare_headline_right {
    top: -0.5rem;
    right: 0;
  }

  .declare_headline h2 .declare_headline_left i,
  .declare_headline h2 .declare_headline_right i {
    width: 3rem;
    height: 0.3rem;
  }

  .declare_headline img {
    margin-bottom: 0.3rem;
  }

  .declare_headline p {
    margin-bottom: 0.2rem;
    font-size: 0.3rem;
  }

  .declare_headline h6 {
    font-size: 0.3rem;
  }

  /* declare_wrapper */
  .declare_wrapper {
    padding: 1rem 0.24rem 0.5rem;
  }

  .declare_item {
    width: 32%;
    height: 7.4rem;
    margin-bottom: 0.5rem;
    padding: 0.8rem 0.8rem 0;
  }

  .declare_item h2 {
    margin-bottom: 0.5rem;
    font-size: 0.6rem;
  }

  .declare_item h2::after {
    height: 0.2rem;
  }

  .declare_item .declare_item_img {
    width: 1.4rem;
    height: 1.4rem;
    margin-bottom: 0.5rem;
  }

  .declare_item .declare_item_img img {
    width: 100%;
  }

  .declare_item h3 {
    margin-bottom: 0.3rem;
    font-size: 0.28rem;
  }

  .declare_item h4 {
    margin-bottom: 0.5rem;
    font-size: 0.24rem;
  }

  .declare_item h6 {
    font-size: 0.24rem;
  }

  .declare_item h6::after {
    width: 0.2rem;
    height: 0.2rem;
  }

  .declare_item:hover h6 {
    color: #04CBC8;
  }

  .declare_item:hover h6::after {
    left: 70%;
    opacity: 1;
  }

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

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

  .news_item {
    width: 32%;
    margin-bottom: 0.5rem;
  }

  .news_item .news_image .news_time {
    width: 70%;
    height: 1.4rem;
    font-size: 0.24rem;
  }

  .news_item .news_image .news_time span {
    margin-left: 0.5rem;
    font-size: 0.6rem;
  }

  .news_item .news_title {
    margin: 0.4rem 0 0.2rem;
    font-size: 0.36rem;
    line-height: 1.4;
  }

  .news_item .news_title::after {
    height: 0.2rem;
  }

  .news_item .news_content {
    font-size: 0.24rem;
  }

  .news_item .news_more {
    font-size: 0.22rem;
  }

  .news_item .news_more::after {
    width: 0.2rem;
    height: 0.2rem;
  }

  /* contact_container */
  .contact_container {
    flex-direction: column;
  }

  .contact_main {
    width: 100%;
    height: 6.6rem;
    padding: 1rem 0 0 0.5rem;
  }

  .contact_main h2 {
    margin-bottom: 0.2rem;
    font-size: 0.7rem;
  }

  .contact_main h3 {
    margin-bottom: 0.7rem;
    font-size: 0.24rem;
  }

  .contact_main .blc_top {
    margin-bottom: 0.5rem;
  }

  .contact_main .blc_top img {
    margin-right: 0.3rem;
  }

  .contact_main .blc_top .blc_r::after {
    bottom: 0.1rem;
    height: 0.1rem;
  }

  .contact_main .blc_top .blc_r span {
    font-size: 0.24rem;
  }

  .contact_main .blc_top .blc_r p {
    font-size: 0.5rem;
  }

  .contact_main .blc_li {
    margin-bottom: 0.3rem;
  }

  .contact_main .blc_li img {
    margin-right: 0.2rem;
  }

  .contact_map {
    display: none;
  }

  /* base_container */
  .base_container {
    height: auto;
  }

  .base_circle1 {
    top: -170px;
    left: -200px;
    width: 400px;
    height: 400px;
  }

  .base_circle2 {
    top: 235px;
    left: 147px;
    width: 73px;
    height: 73px;
  }

  .base_circle3 {
    right: 247px;
    bottom: 107px;
    width: 20px;
    height: 20px;
  }

  .base_circle4 {
    top: 43px;
    right: 81px;
    width: 39px;
    height: 39px;
  }

  /* base_bottom */
  .base_bottom {
    padding: 0 0.24rem 0.5rem;
    flex-direction: column;
  }

  .base_left {
    display: none;
  }

  .base_menu {
    flex: 1;
    flex-direction: column;
    padding-top: 1rem;
  }

  .base_menu dl {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 0.3rem;
  }

  .base_menu dl dt {
    width: 100%;
    margin-bottom: 0.2rem;
    font-size: 0.3rem;
  }

  .base_menu dl dt::after {
    top: -0.04rem;
    width: 0.5rem;
    height: 0.3rem;
  }

  .base_menu dl dd {
    margin-right: 0.3rem;
    margin-bottom: 0;
  }

  .base_menu dl dd a {
    font-size: 0.24rem;
  }

  .base_menu .base_product dd {
    min-width: 1rem;
  }

  /* substrate_container */
  .substrate_container {
    height: auto;
  }

  .substrate_container>div {
    padding: 0.5rem 0.24rem;
    flex-direction: column;
  }

  .substrate_left {
    margin-bottom: 0.4rem;
    font-size: 0.24rem;
    line-height: 1.4;
  }

  .substrate_right {
    font-size: 0.24rem;
    line-height: 1.4;
  }

  /* inside_banner */
  .inside_banner {
    height: 3rem;
    padding: 1rem 0.5rem;
  }

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

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

  /* inside_category */
  .inside_category {
    padding: 0.3rem 0;
    margin-bottom: 1rem;
  }

  .inside_category ul {
    height: auto;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .inside_category ul li {
    width: 33.33%;
    height: 100%;
    padding: 0;
    text-align: center;
    line-height: 0.8rem;
    border: none;
  }

  .inside_category ul li:last-of-type {
    border: none;
  }

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

  .inside_category ul li:hover a {
    color: #04cbc8;
  }

  .inside_category ul li.cate_active {
    background-color: #04cbc8;
  }

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

  /* inside_about */
  .inside_about {
    justify-content: space-between;
    align-items: flex-end;
    padding: 0 0.24rem;
  }

  .inside_about .inside_about_left {
    width: 50%;
    font-size: 0.24rem;
  }

  .inside_about .inside_about_left h1 {
    margin-bottom: 0.2rem;
    font-size: 0.44rem;
  }

  .inside_about .inside_about_right {
    width: 47%;
    margin-left: 0;
  }

  .inside_about .inside_about_right img {
    width: 100%;
  }

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

  /* in_contact_list */
  .in_contact_list {
    flex-direction: row;
    flex-wrap: wrap;
    width: 100%;
    margin-right: 0;
    padding: 0 0.24rem;
  }

  .in_contact_item {
    width: 49%;
    margin-bottom: 0.3rem;
    padding: 0.2rem;
  }

  .in_contact_item h6 {
    margin-bottom: 0.15rem;
    font-size: 0.5rem;
  }

  .in_contact_item h2 {
    padding-bottom: 0.3rem;
    font-size: 0.36rem;
    margin-bottom: 0.15rem;
  }

  .in_contact_item p {
    font-size: 0.32rem;
  }

  /* 给我们留言 */
  .inside_message_wrapper {
    flex: auto;
    width: 100%;
  }

  .inside_message_title {
    margin-bottom: 1rem;
  }

  .inside_message_title p {
    margin-bottom: 0.3rem;
    font-size: 0.7rem;
  }

  .inside_message_title span {
    font-size: 0.32rem;
  }

  .inside_message_title b {
    top: -0.3rem;
    left: 0.2rem;
    transform: rotate(-10deg);
    font-size: 1rem;
  }

  .inside_message {
    font-size: 0.32rem;
  }

  .inside_message .inside_form_input {
    margin-bottom: 0.3rem;
    width: 49%;
  }

  .inside_message .inside_form_input .inside_ipt {
    width: 100%;
    height: 1rem;
    padding: 0 0.4rem;
  }

  .inside_message .inside_form_textarea {
    margin-bottom: 0.3rem;
  }

  .inside_message .inside_form_textarea .inside_area {
    width: 100%;
    height: 3rem;
    padding: 0.2rem 0.4rem;
  }

  .inside_message .inside_form_btn button {
    width: 100%;
    height: 1rem;
    font-size: 0.32rem;
  }

  /* inside_map */
  .inside_map {
    padding: 1rem 0;
  }

  .inside_map_main {
    height: 50vh;
  }

  /* inside_picture */
  .inside_picture {
    justify-content: space-between;
    padding: 0 0.24rem;
  }

  .inside_picture_item {
    width: 49%;
    margin: 0 0 0.24rem 0;
  }

  .inside_picture_item .ipici_bottom {
    font-size: 0.28rem;
  }

  /* 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;
  }

  /* inside_news */
  .inside_news {
    justify-content: space-between;
    padding: 0 0.24rem;
  }

  .inside_news_item {
    width: 49%;
    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;
  }
}