@media (max-width: 1580px) {
  .sec-intro {
    width: 28em;
  }
}

@media (max-width: 1280px) {
  header {
    padding: 0 20px;
  }
}

/* -------- <=1024: 平板竖屏/小桌面 -------- */
@media (max-width: 1024px) {}

/* -------- <=768: 手机横向/常见手机竖屏 -------- */
@media (max-width: 768px) {

  .header-wrap .nav,
  .header-contact-us-btn,
  .footer-nav {
    display: none;
  }

  .mobile-nav {
    display: block;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .08);
  }

  .mobile-nav .ph_l {
    width: 61%;
    height: 100%;
    position: fixed;
    top: var(--header-h);
    left: -61%;
    z-index: 1120;
    overflow: hidden;
    background: #fff;
    color: rgba(255, 255, 255, .6);
    transition: left .3s;
    box-shadow: 0 -1px 4px rgba(0, 0, 0, .08);
  }

  .mobile-nav .ph_l .sign {
    padding: 20px;
    border-radius: 0;
  }

  .mobile-nav .ph_l .sign-wrap {
    gap: 20px;
  }

  .mobile-nav .ph_l .btn-wrap-m {
    margin-top: 20px;
    padding: 20px;
    gap: 20px;
  }

  .mobile-nav .ph_l .btn-wrap-m .btn-lay {
    width: 100%;
    text-align: center;
  }

  .mobile-nav .ph_r {
    display: block;
    width: 40%;
    height: 100%;
    background: rgba(0, 0, 0, .6);
    position: fixed;
    right: -40%;
    top: var(--header-h);
    z-index: 1101;
    transition: right .3s;
    box-shadow: 0 -1px 4px rgba(0, 0, 0, .08);
  }

  .ph_l ul li {
    border-bottom: 1px solid #ccc;
    position: relative;
  }

  .ph_l ul li a {
    padding: 20px;
    color: #000;
    cursor: pointer;
  }

  .ph_l ul li a svg {
    transition: .3s;
  }

  .ph_l ul li a.active svg {
    transform: rotate(90deg);
  }

  .ph_l ul .mobile-nav_secont {
    margin-left: 5px;
  }

  .ph_l ul .mobile-nav_secont a {
    padding: 10px;
  }

  .btn-head-nav-toggle {
    display: block;
    margin-left: 10px;
  }

  .mob-nav-sec {
    margin-bottom: 20px;
    display: none;
  }

  .ph_l ul li .mob-nav-sec a {
    display: block;
    padding: 5px 40px;
  }

  .btn-large-nav-expand {
    display: inherit;
    flex-direction: column;
    cursor: pointer;
  }

  .btn-large-nav-expand i {
    display: block;
    width: 24px;
    height: 2px;
    flex: 0 0 auto;
    background: #333;
    margin-bottom: 4px;
    transition: .5s cubic-bezier(.15, 1, .336, 1)
  }

  .btn-large-nav-expand i:last-of-type {
    margin-bottom: 0
  }

  .btn-large-nav-expand.active i {
    transition: .4s cubic-bezier(.1, .84, .2, 1.4)
  }

  .btn-large-nav-expand.active i:first-of-type {
    transform: translateY(300%) rotate(45deg)
  }

  .btn-large-nav-expand.active i:nth-of-type(2) {
    transform: scaleX(0)
  }

  .btn-large-nav-expand.active i:nth-of-type(3) {
    transform: translateY(-300%) rotate(-45deg)
  }

  .sec-intro {
    width: 100%;
  }

  .mo-col {
    flex-direction: column !important;
    gap: 30px;
  }

  .mo-col>div {
    width: 100% !important;
  }

  .card-wrap {
    --col: 1;
  }

  .product-detail-sec4 .card-wrap {
    --col: 2;
  }

  .product-detail-sec4 .item {
    border: unset !important;
  }

  .apply-sec1 .item {
    gap: 0;
  }

  .company-profile-sec1 .pic-double .img-cont:first-child {
    width: 30%;
  }

  .company-profile-sec1 .pic-double .img-cont:last-child {
    width: 92%;
  }

  .culture-sec2 .sec-top {
    width: 100%;
  }

  .culture-sec2 .card-wrap,
  .concept-sec2 .card-wrap {
    --col: 2;
  }

  .concept-sec1 .sec-area {
    width: 100%;
  }

  .page-card .card-wrap .item-bg {
    padding-left: 10px;
    padding-right: 10px;
  }

  .page-card .card-wrap .item .intro {
    font-size: 10px;
    margin-top: 5px;
  }

  .inp-cont input {
    flex: 1;
    width: auto;
  }

  .handle-wrap {
    gap: 10px;
  }

  .news-top-cont {
    gap: 0;
  }

  .news-top-cont .time {
    margin-top: 20px;
  }

  .breadcrumb {
    flex-wrap: wrap;
  }

  .news-detail-sec1 .sec-top {
    width: 100%;
  }

  .page-form .sec-top {
    padding-right: var(--main-margin);
  }

  .page-form-wrap {
    flex-direction: column;
  }

  .page-form .choose-wrap .card-wrap .item::after {
    width: 15px;
    height: 15px;
  }

  .form-wrap .learn-more {
    height: 40px;
  }

  .page-form .sec-top {
    width: 100%;
  }
}

@media (max-width: 576px) {
  :root {
    --header-h: 60px;
    --main-margin: 20px;
    --main-thin-margin: 20px;
  }

  header {
    padding: 0;
    top: 0;
    background-color: #fff;
  }

  body.scrolled header,
  body.scrolled .mobile-nav {
    --header-h: 50px;
  }

  .header-wrap .logo {
    height: calc(var(--header-h) - 30px);
  }

  footer .privacy {
    flex-direction: column;
    gap: 10px;
  }

  footer .sec-wrap {
    padding: 30px 0;
  }

  .nav-bar .info {
    flex-direction: column;
    padding: 10px 0;
    gap: 10px;
    width: 100%;
  }

  .nav-bar .title {
    height: 30px;
    border-right: unset;
  }

  .nav-bar .nav-item {
    overflow-x: auto;
    overflow-y: hidden;
    height: 30px;
  }

  .nav-bar .nav-item .item {
    white-space: nowrap;
  }

  .index-sec2-bg .title {
    width: 100%;
  }

  .index-sec1 .link-wrap .item .ring-cont {
    width: 30px;
    height: 30px;
  }

  .index-sec1 .link-wrap .item .title {
    font-size: 14px;
  }

  .index-sec1 .link-wrap .item:nth-child(1) {
    top: 45%;
    left: 18%;
  }

  .index-sec1 .link-wrap .item:nth-child(3) {
    top: 61%;
    left: 40%;
  }

  .index-sec1 .link-wrap .item:nth-child(6) {
    top: 56%;
    left: 81%;
  }

  .footer-wrap .logo img {
    height: 22px;
  }

  footer .follow-us .icon {
    width: 35px;
    height: 35px;
  }

  footer .follow-us .icon img {
    height: 15px;
  }

  .footer-bottom {
    font-size: 14px;
  }

  .dialog-wrap {
    width: 100%;
  }

  .sec-intro {
    font-size: 14px;
  }

  .page-form-wrap {
    padding-top: 20px;
  }

  .agree-privacy-wrap {
    font-size: 14px;
  }

  .page-banner .intro {
    width: 100%;
  }

  .product-detail-sec4 .item .pic img {
    width: 50px;
  }
}