/* 正常桌面 :1200px. */
@media (min-width: 1200px) and (max-width: 1600px) {
  .owl-prev {
    left: 3rem;
  }

  .owl-next {
    right: 3rem;
  }
}

/* 正常桌面 :992px. */
@media (min-width: 992px) and (max-width: 1199px) {
  nav.header-menu ul li {
    margin: 5px 0 5px 10px;
  }

  header.header-menu-section.sticky nav.header-menu ul li {
    margin: 10px 0 10px 10px;
  }

  .banner-title h1 {
    letter-spacing: 15px;
  }

  .owl-prev {
    left: 1rem;
  }

  .owl-next {
    right: 1rem;
  }

  .section-title h1 {
    font-size: 38px;
    letter-spacing: 6px;
  }

  section.solution-section .section-title h1 {
    font-size: 37px;
  }

  .solution-section-single-box-content {
    padding: 17px 18px;
    margin: -32px 10px 0 10px;
  }

  .solution-section-single-box-title h6 {
    font-size: 16px;
  }

  .solution-section-single-content-desc p {
    font-size: 15px;
  }

  nav.header-menu ul li {
    padding: 20px 0 20px 8px;
  }

  .submenu {
    top: 94px;
  }

  nav.header-menu .submenu ul li {
    margin: 0;
  }

  header.header-menu-section.sticky nav.header-menu ul li {
    padding: 12px 0 12px 8px;
  }

  .sticky .submenu {
    top: 83px;
  }

  header.header-menu-section.sticky nav.header-menu .submenu ul li {
    margin: 0;
  }

  .customer-case-single-box {
    padding: 50px 12px 44px;
  }

  .customer-case-single-box-back {
    padding: 38px 12px;
  }
}

/* 便携设备 :768px. */
@media (min-width: 768px) and (max-width: 991px) {
  .header-menu-section {
    display: none;
  }

  .banner-title h1 {
    font-size: 40px;
    letter-spacing: 12px;
    line-height: 40px;
  }

  .technologic-platform-box .technologic-platform-title h5 {
    opacity: 0.902;
    font-size: 18px;
    letter-spacing: 0px;
    line-height: 28px;
    color: #f4ba48;
    font-weight: 400;
    margin-top: 10px;
    transition: 0.5s;
  }

  section.technologic-platform {
    padding: 30px 0 60px;
  }

  .section-title h1 {
    font-size: 36px;
    letter-spacing: 7px;
  }

  .application-product-thumb-inner {
    top: 37%;
    left: 38%;
  }

  .solution-section-single-box {
    margin-bottom: 30px;
  }

  section.solution-section {
    padding: 60px 0 60px;
  }

  section.banner-section .banner-title h1 {
    font-size: 60px;
    line-height: 66px;
  }

  section.banner-section .banner-desc p {
    width: 80%;
  }

  .application-product-grid-items {
    grid-gap: 20px;
  }

  .owl-prev {
    left: 1rem;
  }

  .owl-next {
    right: 1rem;
  }

  .customer-case-single-box {
    margin-bottom: 30px;
  }

  .customer-case-single-box-back .customer-case-box-desc p {
    width: 75%;
    margin: auto;
  }
}

/* 大屏幕手机 :600px. */
@media only screen and (min-width: 600px) and (max-width: 768px) {
  .header-menu-section {
    display: none;
  }

  section.slider-section {
    height: 650px;
  }

  .banner-title h1 {
    font-size: 38px;
    letter-spacing: 6px;
    line-height: 34px;
  }

  .banner-desc p {
    width: 100%;
  }

  .owl-prev {
    top: -22rem;
    left: 1rem;
  }

  .owl-next {
    top: -22rem;
    right: 1rem;
  }

  .section-title h1 {
    font-size: 34px;
    letter-spacing: 6px;
  }

  .technologic-platform-box {
    margin-bottom: 30px;
  }

  .section-title h1 {
    font-size: 32px;
    letter-spacing: 4px;
  }

  .application-product-grid-items {
    grid-gap: 10px;
  }

  .application-product-thumb-inner {
    top: 34%;
    left: 34%;
  }

  .solution-section-single-box-content {
    margin-bottom: 30px;
  }

  footer.footer-section {
    padding: 30px 0 0;
  }

  section.banner-section {
    height: 750px;
  }

  section.banner-section .banner-title h1 {
    font-size: 54px;
    line-height: 60px;
  }

  section.banner-section .banner-desc p {
    width: 90%;
  }

  .customer-case-single-box {
    margin-bottom: 30px;
  }

  .customer-case-single-box-back .customer-case-box-desc p {
    width: 53%;
    margin: auto;
  }
}

/* 中型手机 :480px. */
@media only screen and (min-width: 480px) and (max-width: 599px) {
  .header-menu-section {
    display: none;
  }

  section.slider-section {
    height: 650px;
  }

  .banner-title h1 {
    font-size: 40px;
    letter-spacing: 12px;
  }

  .banner-desc p {
    width: 100%;
  }

  .owl-nav {
    display: none;
  }

  .section-title h1 {
    font-size: 34px;
    letter-spacing: 4px;
  }

  .technologic-platform-box {
    margin-bottom: 30px;
  }

  .section-title h1 {
    line-height: 40px;
  }

  .application-product-grid-items {
    grid-gap: 10px;
  }

  .application-product-thumb-inner {
    top: 32%;
    left: 32%;
  }

  .application-product-title {
    top: 0px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .solution-section-single-box {
    margin-bottom: 30px;
  }

  section.banner-section .banner-title h1 {
    font-size: 46px;
    line-height: 50px;
  }

  section.banner-section .banner-desc p {
    width: 90%;
  }

  section.banner-section {
    height: 750px;
  }

  .customer-case-single-box {
    margin-bottom: 30px;
  }

  .customer-case-single-box {
    padding: 35px 30px 30px;
  }
}

/* 小屏手机 :320px. */
@media only screen and (min-width: 320px) and (max-width: 479px) {
  .header-menu-section {
    display: none;
  }

  section.slider-section {
    height: 650px;
  }

  .banner-title h1 {
    font-size: 38px;
    letter-spacing: 5px;
    line-height: 44px;
    margin: 10px 0 10px;
  }

  .banner-desc p {
    width: 100%;
  }

  .section-title h1 {
    font-size: 30px;
    letter-spacing: 2px;
  }

  .technologic-platform-box {
    margin-bottom: 30px;
  }

  .section-title h1 {
    line-height: 40px;
  }

  .application-product-grid-items {
    grid-gap: 5px;
  }

  .application-product-thumb-inner {
    top: 25%;
    left: 25%;
  }

  .application-product-title {
    top: 0px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  section.solution-section .section-title h1 {
    font-size: 28px;
    margin-top: 10px;
  }

  .solution-section-single-box {
    margin-bottom: 30px;
  }

  section.banner-section .banner-title h1 {
    font-size: 32px;
    letter-spacing: 4px;
    line-height: 46px;
  }

  section.banner-section .banner-title {
    margin: 24px 0 10px;
  }

  section.banner-section .banner-desc p {
    width: 90%;
  }

  section.banner-section {
    height: 750px;
  }

  .customer-case-single-box {
    margin-bottom: 30px;
  }
}

/*custome*/
@media (min-width: 768px) {
  .col-lg-2dot4 {
    flex: 0 0 auto;
    width: 20%;
  }
}

@media (max-width: 768px) {
  .col-lg-2dot4 {
    flex: 0 0 auto;
    width: 100%;
  }
}