@media screen and (min-width: 768px) {
  .advertising {
    width: 100%;
    height: 973px;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    background: #f2f2f2;
    overflow: hidden;
    background: url(/img/brand-ross-ad.png) no-repeat;
    background-position: top center;
  }
  .advertising .video-container {
    position: relative;
    width: 960px;
    height: 540px;
    margin: 0 auto;
    margin-top: 433px;
  }
  .advertising .video-container .play {
    position: absolute;
    width: 132px;
    height: 132px;
    border-radius: 50%;
    z-index: 2;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    cursor: pointer;
    background: url(/img/ross-video-play.png) no-repeat center;
  }
  .advertising .video-container video {
    display: block;
    width: 100%;
    height: 100%;
  }

  .main .about .content .about-swiper {
    height: 540px;
  }
  .main .about .content .about-swiper .swiper {
    width: 720px;
    height: 100%;
    position: relative;
  }
  .main .about .content .about-swiper .swiper .swiper-prev,
.main .about .content .about-swiper .swiper .swiper-next {
    position: absolute;
    left: 0;
    top: 50%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    width: 48px;
    height: 72px;
    background-color: rgba(55, 55, 55, 0.3) !important;
    z-index: 5;
    cursor: pointer;
    background: url(/img/icon-arrow-left.png) no-repeat center;
  }
  .main .about .content .about-swiper .swiper .swiper-next {
    left: unset;
    right: 0;
    background: url(/img/icon-arrow-right.png) no-repeat center;
  }
  .main .about .content .about-swiper .swiper img {
    width: 100%;
    height: 540px;
  }
  .main .about .content .about-swiper .section {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    width: 480px;
    height: 540px;
    background: url(/img/icon-comma-01.png), url(/img/icon-comma-02.png);
    background-color: #f3920d;
    background-repeat: no-repeat;
    background-position: 36px 36px, 353px 422px;
    color: #fff;
  }
  .main .about .content .about-swiper .section .title {
    font-size: 25px;
    font-weight: bold;
    padding: 0 24px;
    width: 100%;
    text-align: left;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
  }
  .main .about .content .about-swiper .section .description {
    font-size: 24px;
    font-weight: lighter;
    line-height: 44px;
    padding: 0 24px;
    text-align: justify;
    word-break: break-all;
    margin-top: 12px;
  }
  .main .about .content .more-content {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    margin-top: 24px;
  }
  .main .about .content .more-content img {
    display: block;
    width: 233px;
    height: 160px;
  }
  .main .chairman .cover img {
    display: block;
    width: 470px;
    height: 480px;
  }
  .main .chairman .info {
    padding-top: 40px;
    margin-left: 50px;
  }
  .main .chairman .info .name {
    font-size: 50px;
    color: #f3920d;
  }
  .main .chairman .info .name-en {
    font-size: 34px;
    color: #000000;
    font-weight: lighter;
    margin-top: 37px;
  }
  .main .chairman .info .name-en span {
    font-size: 38px;
    color: #f3920d;
    font-weight: normal;
  }
  .main .chairman .info .tip {
    font-size: 25px;
    color: #000;
    font-weight: lighter;
    margin-top: 19px;
  }
  .main .chairman .info .tip span {
    margin: 0 16px;
  }
  .main .chairman .info .line {
    width: 36px;
    height: 7px;
    background: #f3920d;
    margin: 25px 0 37px;
  }
  .main .chairman .info .description {
    font-size: 20px;
    color: #000;
    font-weight: lighter;
  }
  .main .word .content img {
    display: block;
    width: 100%;
  }
  .main .brand-activity .content .item {
    position: relative;
    float: left;
    height: 340px;
    width: 390px;
    margin-right: 15px;
    margin-bottom: 15px;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    overflow: hidden;
  }
  .main .brand-activity .content .item .cover-bg {
    width: 100%;
    height: 100%;
    opacity: 1;
    -webkit-transition: all 0.4s;
    transition: all 0.4s;
    background: #f3920d;
  }
  .main .brand-activity .content .item img {
    width: 100%;
    height: 100%;
    opacity: 1;
    -webkit-transition: all 0.4s;
    transition: all 0.4s;
  }
  .main .brand-activity .content .item.no-mb {
    margin-bottom: 0;
  }
  .main .brand-activity .content .item.no-mr {
    margin-right: 0;
  }
  .main .brand-activity .content .item:nth-child(1), .main .brand-activity .content .item:nth-child(7) {
    width: 795px;
  }
  .main .brand-activity .content .item:hover img {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
  .main .brand-activity .content .item .cover {
    position: absolute;
    left: 0;
    bottom: 0;
    display: inline-block;
    background: rgba(0, 0, 0, 0.5);
    padding: 19px 14px;
  }
  .main .brand-activity .content .item .cover .title {
    color: #fff;
    font-size: 24px;
    font-weight: lighter;
    line-height: 1.5;
  }
  .main .honor .content {
    position: relative;
  }
  .main .honor .content .swiper-container {
    width: 1070px;
    margin: 0 auto;
  }
  .main .honor .content .swiper-container img {
    display: block;
    width: 100%;
  }
  .main .honor .content .swiper-prev,
.main .honor .content .swiper-next {
    position: absolute;
    left: 0;
    top: 50%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    width: 48px;
    height: 72px;
    background-color: rgba(55, 55, 55, 0.3) !important;
    z-index: 5;
    cursor: pointer;
    background: url(/img/icon-arrow-left.png) no-repeat center;
  }
  .main .honor .content .swiper-next {
    left: unset;
    right: 0;
    background: url(/img/icon-arrow-right.png) no-repeat center;
  }
  .main .device .swiper-container img {
    display: block;
    width: 100%;
  }
}
@media screen and (max-width: 768px) {
  .advertising {
    width: 100%;
    height: 5.9488rem;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    background: #f2f2f2;
    overflow: hidden;
    background: url(/img/brand-ross-ad.png) no-repeat;
    background-position: top center;
    background-size: 7.5rem;
  }
  .advertising .video-container {
    position: relative;
    width: 6.86rem;
    height: 3.8588rem;
    margin: 0 auto;
    margin-top: 2.09rem;
  }
  .advertising .video-container .play {
    position: absolute;
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 50%;
    z-index: 2;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    cursor: pointer;
    background: url(/img/ross-video-play.png) no-repeat center;
    background-size: 0.8rem;
  }
  .advertising .video-container video {
    display: block;
    width: 100%;
    height: 100%;
  }

  .main .about {
    width: 6.86rem;
    margin: 0 auto;
  }
  .main .about .content .about-swiper .swiper {
    width: 100%;
    float: unset !important;
  }
  .main .about .content .about-swiper .swiper .swiper-container {
    width: 100%;
    height: 5.14rem;
  }
  .main .about .content .about-swiper .swiper .swiper-container img {
    display: block;
    width: 100%;
    height: 100%;
  }
  .main .about .content .about-swiper .section {
    float: unset !important;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    background: url(/img/icon-comma-01.png), url(/img/icon-comma-02.png);
    background-color: #f3920d;
    background-repeat: no-repeat;
    background-size: 0.66rem;
    background-position: 0.4rem 0.82rem, 5.86rem 2.8rem;
    color: #fff;
    padding: 0.4rem;
  }
  .main .about .content .about-swiper .section .title {
    font-size: 0.32rem;
    font-weight: bold;
    width: 100%;
    text-align: left;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    text-align: center;
  }
  .main .about .content .about-swiper .section .description {
    font-size: 0.24rem;
    line-height: 0.46rem;
    text-align: justify;
    word-break: break-all;
    margin-top: 0.4rem;
    text-align: center;
  }
  .main .about .content .more-content {
    display: none;
  }
  .main .chairman {
    width: 6.48rem;
    margin: 0 auto;
  }
  .main .chairman .content {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: reverse;
    -ms-flex-direction: column-reverse;
    flex-direction: column-reverse;
  }
  .main .chairman .content .cover {
    float: unset !important;
  }
  .main .chairman .content .cover img {
    display: block;
    width: 5.46rem;
    height: 5.57rem;
    margin: 0 auto;
  }
  .main .chairman .content .info {
    float: unset !important;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
  }
  .main .chairman .content .info .name {
    font-size: 0.3rem;
    color: #272727;
    font-weight: bold;
  }
  .main .chairman .content .info .name-en {
    font-size: 0.26rem;
    color: #272727;
    margin-top: 0.32rem;
  }
  .main .chairman .content .info .name-en span {
    font-size: 0.3rem;
    color: #f3920d;
  }
  .main .chairman .content .info .tip {
    font-size: 0.26rem;
    color: #272727;
    margin-top: 0.12rem;
  }
  .main .chairman .content .info .tip span {
    margin: 0 0.16rem;
  }
  .main .chairman .content .info .line {
    width: 0.4rem;
    height: 0.06rem;
    background: #f3920d;
    margin: 0.4rem 0;
  }
  .main .chairman .content .info .description {
    font-size: 0.26rem;
    color: #666;
    line-height: 0.48rem;
    text-align: center;
    margin-bottom: 0.4rem;
  }
  .main .word {
    width: 6.86rem;
    margin: 0 auto;
  }
  .main .word .content img {
    display: block;
    width: 100%;
  }
  .main .brand-activity {
    width: 6.86rem;
    margin: 0 auto;
  }
  .main .brand-activity .content .item {
    position: relative;
    float: left;
    height: 1.94rem;
    width: 2.23rem;
    margin-right: 0.08rem;
    margin-bottom: 0.08rem;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    overflow: hidden;
  }
  .main .brand-activity .content .item img {
    width: 100%;
    height: 100%;
    opacity: 1;
    -webkit-transition: all 0.4s;
    transition: all 0.4s;
  }
  .main .brand-activity .content .item.no-mb {
    margin-bottom: 0;
  }
  .main .brand-activity .content .item.no-mr {
    margin-right: 0;
  }
  .main .brand-activity .content .item:nth-child(1), .main .brand-activity .content .item:nth-child(7) {
    width: 4.54rem;
  }
  .main .brand-activity .content .item:hover img {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
  .main .brand-activity .content .item .cover {
    position: absolute;
    left: 0;
    bottom: 0;
    display: inline-block;
    background: rgba(0, 0, 0, 0.5);
    padding: 0.08rem 0.1rem;
  }
  .main .brand-activity .content .item .cover .title {
    color: #fff;
    font-size: 0.22rem;
    font-weight: lighter;
    line-height: 1.5;
  }
  .main .honor .scroll-box img {
    width: 1.96rem;
    height: 2.83rem;
    margin-right: 0.24rem;
  }
  .main .honor .scroll-box img:first-child {
    margin-left: 0.32rem;
  }
  .main .honor .scroll-box img:last-child {
    margin-right: 0.32rem;
  }
  .main .device .scroll-box img {
    width: 1.88rem;
    height: 2.41rem;
    margin-right: 0.24rem;
  }
  .main .device .scroll-box img:first-child {
    margin-left: 0.32rem;
  }
  .main .device .scroll-box img:last-child {
    margin-right: 0.32rem;
  }
}