/* 手机端自适应：覆盖桌面固定 1200 宽度布局 */
@media screen and (max-width: 991px) {
  html, body {
    min-width: 0 !important;
    max-width: 100%;
    overflow-x: hidden;
  }

  .container {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
    box-sizing: border-box;
  }

  /* 页头：隐藏桌面导航，显示汉堡按钮 */
  #header {
    height: 56px !important;
    padding: 0 10px !important;
  }

  #header:before {
    top: 55px !important;
  }

  #header .inner {
    height: 56px !important;
    padding: 0 52px 0 10px !important;
    text-align: left !important;
  }

  #header .logo {
    top: 6px !important;
    left: 0 !important;
  }

  #header .logo a {
    width: 170px !important;
    height: 44px !important;
  }

  #header .gnb,
  #header .tnb {
    display: none !important;
  }

  #header .menu {
    display: block !important;
    right: 8px !important;
    top: 50% !important;
    margin-top: -17px !important;
    width: 40px !important;
    height: 34px !important;
    border: 1px solid rgba(255, 255, 255, 0.7) !important;
    background: transparent !important;
    color: #fff !important;
    padding: 0 !important;
    cursor: pointer;
    z-index: 10;
  }

  .head-fix #header .menu,
  .menu-on #header .menu {
    border-color: #9a9a9b !important;
    color: #333 !important;
    background: #fff !important;
  }

  #header .menu span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 5px auto;
    background: currentColor;
  }

  #header .menu span:first-child {
    margin-top: 8px;
  }

  /* 侧滑菜单 LOGO */
  #nav .top {
    height: 64px !important;
  }

  #nav .top h2 a {
    width: 160px !important;
    height: 48px !important;
    top: 8px;
  }

  #nav .top .close {
    top: 50% !important;
  }

  /* 横幅 / 首页视觉 */
  .page_banner {
    height: auto !important;
    min-height: 160px;
    background-size: cover !important;
    background-position: center !important;
  }

  .page_banner img {
    width: 100% !important;
    height: auto !important;
    display: block;
  }

  #vis,
  .banner_box {
    height: 56vh !important;
    min-height: 280px;
  }

  #vis .vis .ver dt strong,
  #vis .vis .ver dt {
    font-size: 22px !important;
  }

  #vis .vis .ver dd {
    font-size: 14px !important;
  }

  /* 通用区块 */
  .title_box h1 {
    font-size: 22px !important;
  }

  .title_box h4 {
    font-size: 13px !important;
  }

  .tab_list {
    margin-top: 20px !important;
    justify-content: flex-start !important;
  }

  .tab_list li {
    width: calc(50% - 12px) !important;
    margin: 6px !important;
  }

  .tab_list li a {
    line-height: 44px !important;
    height: 44px !important;
    font-size: 14px !important;
    padding: 0 6px !important;
  }

  .about_tab.tab_list li,
  .product_tab.tab_list li {
    width: calc(50% - 12px) !important;
  }

  /* 首页关于我们 */
  .about_info.flex_nowrap,
  .about_info {
    display: block !important;
  }

  .about_info > div,
  .about_info .about_img,
  .about_info .about_dec {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 0 !important;
    box-sizing: border-box;
  }

  .about_info .about_img {
    margin-bottom: 16px;
  }

  .about_info .about_img img {
    width: 100% !important;
    height: auto !important;
  }

  .about_dec h2 {
    font-size: 42px !important;
  }

  .about_dec h1 {
    font-size: 24px !important;
    margin: 12px 0 16px !important;
  }

  .about_dec .flex_justify_between {
    margin-top: 24px !important;
  }

  .about_swiper {
    margin: 40px auto 50px !important;
  }

  .about_swiper .imgs_box {
    height: auto !important;
  }

  .about_swiper .imgs_box img {
    max-height: none !important;
    width: 100%;
    height: auto;
  }

  /* 产品 / 环境列表 */
  .product_item,
  .product_item .imgs_box,
  .product_list li,
  .team_list li {
    width: 100% !important;
    max-width: 100% !important;
    margin: 10px 0 !important;
    height: auto !important;
  }

  .product_item .imgs_box,
  .team_list li {
    height: auto !important;
  }

  .product_item .imgs_box img,
  .team_list li img {
    max-width: 100% !important;
    max-height: none !important;
    width: 100% !important;
    height: auto !important;
  }

  .product_cont.flex_wrap,
  .product_list.flex_wrap,
  .team_list.flex_wrap {
    display: block !important;
  }

  .product_big {
    width: 100% !important;
  }

  /* 公司数据条 */
  .equipment_list.flex_nowrap,
  .equipment_list {
    display: block !important;
  }

  .equipment_list li {
    width: 100% !important;
    margin-bottom: 16px;
    text-align: center;
  }

  .equipment_swiper {
    margin-top: 20px;
  }

  /* 新闻 */
  .news_item a.flex_nowrap,
  .news_item a {
    display: block !important;
  }

  .news_item .imgs_box {
    width: 100% !important;
    height: auto !important;
    margin: 0 0 12px !important;
  }

  .news_item .imgs_box img {
    max-width: 100% !important;
    max-height: none !important;
    width: 100%;
    height: auto;
  }

  .news_date {
    width: auto !important;
    margin: 0 0 10px !important;
    border-right: none !important;
    padding: 0 !important;
    text-align: left !important;
  }

  .news_info {
    width: 100% !important;
  }

  .news_info h1 {
    font-size: 18px !important;
  }

  /* 页脚 */
  footer .foot_cont.flex_nowrap,
  .foot_cont {
    display: block !important;
    padding: 30px 15px !important;
  }

  .foot_logo {
    width: 200px !important;
    height: 68px !important;
    margin: 0 auto 24px !important;
    background-position: center center !important;
  }

  .foot_nav.flex_nowrap,
  .foot_nav {
    display: block !important;
  }

  .foot_nav ul {
    width: 100% !important;
    margin-bottom: 20px;
  }

  .foot_code {
    margin: 20px auto 0 !important;
  }

  .foot_tips {
    padding: 18px 12px !important;
  }

  .foot_tips h5 {
    font-size: 12px !important;
    line-height: 1.7 !important;
    word-break: break-all;
  }

  /* 面包屑 / 详情 */
  .crumbs_box {
    overflow-x: auto;
  }

  .page_detial img {
    max-width: 100% !important;
    height: auto !important;
  }

  /* 分页 */
  .pagebar .pagination {
    flex-wrap: wrap;
    gap: 6px;
  }

  .pagination a {
    margin: 2px !important;
  }

  /* 右侧客服缩小 */
  .y-kefu-box {
    transform: scale(0.85);
    transform-origin: right center;
  }

  /* 联系页等 */
  .contact_list {
    display: block !important;
  }

  .contact_list li {
    border-right: none !important;
    border-bottom: 1px solid #ccc;
  }

  .contact_dec {
    padding-left: 0 !important;
    height: auto !important;
    background: none !important;
  }
}

@media screen and (max-width: 480px) {
  #header .logo a {
    width: 150px !important;
    height: 40px !important;
  }

  .tab_list li,
  .about_tab.tab_list li,
  .product_tab.tab_list li {
    width: 100% !important;
    margin: 4px 0 !important;
  }

  #vis,
  .banner_box {
    height: 48vh !important;
    min-height: 240px;
  }
}