@media only screen and (max-width: 1199px) {
  body {
    font-size: 1.6rem;
  }
  .mobileMenuBtn {
    position: fixed;
    left: 10px;
    top: 10px;
    height: 38px;
    width: 40px;
    text-align: center;
    cursor: pointer;
    z-index: 100;
    border-radius: 3px;
    display: block;
  }
  .menu-handler .burger {
    width: 24px;
    height: 2px;
    background: #fff;
    display: block;
    position: absolute;
    z-index: 5;
    top: 12px;
    left: 50%;
    margin-left: -12px;
    transform-origin: center;
    -webkit-transform-origin: center;
    -webkit-transition: all .3s;
    transition: all .3s;
  }
  .menu-handler .burger-2 {
    top: 19px;
  }
  .menu-handler .burger-3 {
    top: 26px;
  }
  .menu-handler.active .burger-1 {
    top: 18px;
    -webkit-transform: rotate(-45deg);
    transform: rotate(-45deg);
  }
  .menu-handler.active .burger-2 {
    opacity: 0;
  }
  .menu-handler.active .burger-3 {
    top: 18px;
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
  }
  .header {
    height: 60px;
    background: rgba(0, 0, 0, 0.7);
  }
  .header .app-download {
    display: block;
    position: fixed;
    top: 20px;
    right: 20px;
  }
  .header .app-download a {
    color: #fff;
  }
  .header .logo {
    display: block;
  }
  .header .menu {
    padding-top: 10px;
    margin: 0;
    position: fixed;
    z-index: 10;
    top: 60px;
    left: 0;
    height: 100%;
    background: #fff;
    width: 100%;
    -webkit-transition: 0.4s all;
    transition: 0.4s all;
    opacity: 0;
    visibility: hidden;
  }
  .header .menu ul {
    margin: 0 20px;
    display: block;
  }
  .header .menu ul li {
    display: block;
    color: #333;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: solid 1px #eee;
    font-size: 1.6rem;
  }
  .header .menu ul li.logo-img {
    display: none;
  }
  .header .menu.active {
    opacity: 1;
    visibility: visible;
  }
}
@media only screen and (max-width: 960px) {
  .banner .banner-text {
    top: 30%;
  }
  .product-function .swiper-container {
    padding-bottom: 45px;
  }
  .product-function .swiper-slide {
    width: 320px;
    height: 650px;
  }
  .product-function .swiper-button-prev,
  .product-function .swiper-button-next {
    width: 35px;
    height: 35px;
  }
  .product-function .swiper-button-prev {
    left: 0;
  }
  .product-function .swiper-button-next {
    right: 0;
  }
  .customer-case .customer-case-item {
    width: 100%;
  }
}
@media only screen and (max-width: 767px) {
  .default-title {
    padding: 30px 0;
  }
  .banner .banner-text {
    top: 34%;
  }
  .banner .banner-text h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
  }
  .banner .banner-text p {
    font-size: 1.6rem;
  }
  .product-video video {
    width: 100%;
    height: 400px;
  }
  .product-function {
    padding: 30px 0;
  }
  .product-function .swiper-container {
    padding-bottom: 45px;
  }
  .product-function .swiper-slide {
    width: 280px;
    height: 450px;
  }
  .product-function .swiper-container {
    padding-bottom: 195px;
  }
  .concat-us {
    padding: 0;
  }
  .concat-us .concat-us-advertising {
    padding: 30px 0;
  }
  .footer {
    margin-top: 20px;
  }
  .footer .footer-list {
    margin-left: -30px;
  }
  .footer .footer-list .footer-list-item-type,
  .footer .footer-list .footer-list-item-msg {
    font-size: 1.6rem;
  }
  .footer .footer-list .footer-list-item {
    margin-left: 30px;
  }
  .footer .footer-copyright {
    font-size: 1.6rem;
  }
  .concat-us-advertising,
  .footer-list-item-menu {
    display: none;
  }
  .user-pain-point-list .user-pain-point-item .user-pain-point-item-text {
    font-size: 1.6rem;
  }
}
@media only screen and (max-width: 479px) {
  .default-title {
    padding: 30px 0;
  }
  .default-title-text {
    padding: 0 20px;
  }
  .default-title-text h1 {
    font-size: 2rem;
  }
  .default-title-text p {
    font-size: 1.6rem;
  }
  .default-title-icon img {
    width: 60px;
  }
  .banner {
    margin-top: 60px;
  }
  .banner .banner-text {
    /* top: -12%; */
    color: #fff;
    padding-bottom: 20px;
  }
  .banner .banner-text h1 {
    margin-bottom: 0;
  }
  .function-introduced-text .function-introduced-text-title {
    font-size: 2rem;
  }
  .function-introduced-text ul li {
    margin-bottom: 20px;
  }
  .user-pain-point-list {
    margin-top: 0;
    display: block;
    overflow: hidden;
  }
  .user-pain-point-list .user-pain-point-list-item {
    width: 50%;
    height: 240px;
    float: left;
  }
  .user-pain-point-list::before {
    display: none;
  }
  .product-video video {
    width: 100%;
    height: 220px;
  }
  .product-function {
    padding: 30px 0 0 0;
  }
  .product-function .swiper-slide {
    width: 210px;
    height: 380px;
  }
  .product-function .swiper-slide h1 {
    margin: 50px 0 10px 0;
    font-size: 1.8rem;
  }
  .product-function .swiper-container {
    padding-bottom: 155px;
  }
  .product-function .swiper-pagination {
    bottom: 120px;
  }
  .concat-us .concat-us-input {
    display: block;
  }
  .concat-us .concat-us-input .concat-us-input-item,
  .concat-us .concat-us-input .concat-us-input-button {
    width: 100%;
  }
  .concat-us .concat-us-input .concat-us-input-item:nth-child(2n) {
    margin: 20px 0;
  }
  .concat-us .concat-us-advertising {
    padding: 30px 0;
  }
  .concat-us .concat-us-advertising ul {
    display: block;
  }
  .concat-us .concat-us-advertising ul li:nth-child(2) {
    margin: 20px 0;
  }
  .customer-case .customer-case-item {
    padding: 0 50px;
    box-sizing: border-box;
  }
}