*{
  font-weight: 400;
}
.bg-img {
  background-repeat: no-repeat;
  background-size: cover;
  display: flex;
  background-position: center;
}

.bg-home-img {
  background-repeat: no-repeat;
  background-size: cover;
  display: flex;
  background-position: center;
}

.bg-home-img2 {
  background-repeat: no-repeat;
  background-size: cover;
  display: flex;
  background-position: center;
}


@media (min-width: 0px) and (max-width: 800px) {
  .hide-1080px,.hide-920px{
    display: none;
  }
  a>span{
    font-size: 0.875em !important;
  }
  .bg-img {
    height: 35em;
    background-image: url(../image/imgv33.jpg);
  }

  .bg-img>div:nth-child(1) {
    width: 21.875em;
    margin: 2em auto 0 auto;
  }
  .title-top>div:nth-child(1){
    height: 1.875em;
    line-height: 1.875em;
    margin: auto;
  }
  .title-top>div:nth-child(1)>span{
    font-size: 1.25em;
  }
  .title-top>div:nth-child(2){
    margin-top: 0.375em;
  }
  .title-top>div:nth-child(2)>span{
    font-size: 2em;
  }

  .title-top>div:nth-child(3) {
    height: 1.875em;
    line-height: 1.875em;
    margin: 1em 0 2.5em 0;
  }
  .title-top>div:nth-child(3)>span {
    font-size: 1.25em;
  }
  .bg-home-img {
    height: 35em;
    background-image: url(../image/imgv43.jpg);
  }
  .bg-home-img>div:nth-child(1) {
    width: 21.875em;
    margin: 2em auto 0 auto;
  }
  .bg-home-img2 {
    height: 35em;
    background-image: url(../image/imgv53.jpg);
  }
  .bg-home-img2>div:nth-child(1) {
    width: 21.875em;
    margin: 2em auto 0 auto;
  }

  .box-button {
    display: block;
    width: 5em;
    height: 2em;
    line-height: 2em;
  }
}


@media (min-width:800.999px) and (max-width: 1080px) {
  .hide-1080px,.hide-350px{
    display: none;
  }
  .bg-img {
    height: 40em;
    align-items: center;
    background-image: url(../image/imgv31.jpg);
  }

  .bg-img>div:nth-child(1) {
    width: 57.5em;
    margin: 0 auto;
  }
  .title-top>div:nth-child(1){
    height: 2.0625em;
    line-height: 2.0625em;
  }
  .title-top>div:nth-child(1)>span{
    font-size: 1.375em;
  }
  .title-top>div:nth-child(2){
    height: 4.125em;
    line-height:4.125em;
  }
  .title-top>div:nth-child(2)>span{
    font-size: 2.75em;
  }
  .title-top>div:nth-child(3){
    height: 2.0625em;
    line-height: 2.0625em;
    margin: 1em 0 2.5em 0;
  }
  .title-top>div:nth-child(3)>span {
    font-size: 1.375em;
  }
  .bg-home-img {
    height: 40em;
    align-items: center;
    background-image: url(../image/imgv41.jpg);
  }

  .bg-home-img>div:nth-child(1) {
    width: 57.5em;
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
  }

  .title-top1 {
    width: 24em;
  }

  .bg-home-img2 {
    height: 52.5em;
    align-items: center;
    background-image: url(../image/imgv51.jpg);
  }

  .bg-home-img2>div:nth-child(1) {
    width: 57.5em;
    margin: 0 auto;
  }

  .conceal-imgs>img:nth-child(3),
  .conceal-imgs>img:nth-child(4) {
    display: none;
  }

  .float-box,
  .boder-top {
    display: none;
  }

  .box-button {
    display: block;
    width: 7.5em;
    height: 2.5em;
    line-height: 2.5em;
  }
  .box-button>span{
    font-size: 1.125em;
  }
}

@media (min-width:1080.999px) and (max-width: 100000px) {
  .hide-920px,.hide-350px{
    display: none;
  }
  .bg-img {
    height: 61.25em;
    align-items: center;
    background-image: url(../image/imgv31.jpg);
  }

  .bg-img>div:nth-child(1) {
    width: 67.5em;
    margin: 0 auto;
  }
  .title-top>div:nth-child(1){
    height: 2.625em;
    line-height: 2.625em;
  }
  .title-top>div:nth-child(1)>span{
    font-size: 1.75em;
  }
  .title-top>div:nth-child(2){
    height: 5.25em;
    line-height: 5.25em;
  }
  .title-top>div:nth-child(2)>span{
    font-size: 3.5em;
  }
  .title-top>div:nth-child(3){
    height: 2.625em;
    line-height: 2.625em;
    margin: 1.125em 0 3em 0;
  }
  .title-top>div:nth-child(3)>span {
    font-size: 1.75em;
  }
  .bg-home-img {
    height: 61.25em;
    align-items: center;
    background-image: url(../image/imgv41.jpg);
  }

  .bg-home-img>div:nth-child(1) {
    width: 67.5em;
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
  }

  .title-top1 {
    width: 24em;
  }

  .bg-home-img2 {
    height: 61.25em;
    align-items: center;
    background-image: url(../image/imgv51.jpg);
  }

  .bg-home-img2>div:nth-child(1) {
    width: 67.5em;
    margin: 0 auto;
  }

  .conceal-imgs>img:nth-child(3),
  .conceal-imgs>img:nth-child(4) {
    display: none;
  }

  .float-box,
  .boder-top {
    display: none;
  }

  .box-button {
    display: block;
    width: 8em;
    height: 2.5em;
    line-height: 2.5em;
  }
  .bg-img,.bg-home-img{
    background-size: 2560px;
  }

}

.button-balck-fff:hover {
  color: rgba(255, 255, 255, 0.952);
  background: rgba(0, 0, 0, 0.904);
}
@media (min-width: 800.999px) and (max-width: 940px) {
  .bg-img>div:nth-child(1){
    width: 85.185185% !important;
  }
}