#app{
    background: #fafafa;
}
.banner{
    width: 100%;
    position: relative;
}
.banner .banner-img{
    width: 100%;
}
.banner .banner-img img{
    width: 100%;
}
.banner .banner-inner{
    width: 80%;
    max-width: 1440px;
    margin: 0 auto;
    position: absolute;
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
}
.banner .banner-inner .banner-content{
    display: flex;
    flex-direction: column;
}
.banner .banner-inner .banner-content .banner-title{
  color: #ffffff;
  font-family: "Alibaba PuHuiTi";
  font-weight: 400;
  font-size: 45px;
    margin-bottom: 3%;
}
.banner .banner-inner .banner-content .banner-desc{
  color: #f8f8f8;
  font-family: "Alibaba PuHuiTi";
  font-weight: 400;
  font-size: 30px;
   margin-bottom: 4%;
}
.about-nav{
    width: 100%;
}
.about-nav .about-nav-inner{
  margin: 40px auto;
  display: flex;
  flex-direction: row;
  justify-content: center;
}
.about-nav .about-nav-item{
  color: #8e8e8e;
  font-family: "Alibaba PuHuiTi";
  font-weight: 400;
  font-size: 20px;
  line-height: 27px;
  text-transform: uppercase;
  padding: 0 9px;
  position: relative;
}
.about-nav .about-nav-item::after{
  content: '';
  position: absolute;
  right: 0;
  top: 25%; 
  height: 60%; 
  width: 1px;
  background-color: #7d7d7d;
}
.about-nav a:last-child .about-nav-item::after{
  display: none;
}
.about-nav .about-nav-item-active{
  color: #0e0e0e;
  font-family: "Alibaba PuHuiTi";
  font-weight: 400;
  font-size: 20px;
  line-height: 27px;
}
.cert{ 
    width: 100%;
}
.cert .cert-inner{
    width: 80%;
    margin: 0 auto;
    max-width: 1440px; 
    padding-bottom: 40px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}
.cert .cert-one{
  padding: 0px 28px;
  border-radius: 6px;
  background: #ffffff;
  box-shadow: 0px 0px 8px 2px #0000000f;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cert .cert-one img {
    width: 100%;
    display: block; 
    object-fit: cover;
    transform: scale(1);
    transition: 0.5s;
}
.cert .cert-one img:hover {
    transform: scale(1.05);
}
.page{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 62px;
    margin-bottom: 55px;
}
.page .page-prev,
.page .page-next{ 
    cursor: pointer;
}
.page .pages{
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 62px;
}
 .page .pages .num {
  color: #000000;
  font-family: DIN;
  font-weight: 500;
  font-size: 40px;
    cursor: pointer;
}
 .page .pages .num-active{
  color: #cc141c;
  font-family: DIN;
  font-weight: 700;
  font-size: 40px;
  border-bottom: 4px solid #cc141c;
}

@media (max-width: 1440px) {
}
@media (max-width: 1380px) {
}
@media (max-width: 1280px) {
.banner{
    margin-top: 90px;
}
.banner .banner-inner .banner-content .banner-title {
    font-size: 40px;
    margin-bottom: 2%;
}
.banner .banner-inner .banner-content .banner-desc {
    font-size: 27px;
}
.about-nav .about-nav-inner {
    margin: 30px auto;
}
.about-nav .about-nav-item {
    font-size: 18px;
}
}
@media (max-width: 1110px) {
}
@media (max-width: 1080px) {
.page .page-prev svg,
.page .page-next svg{ 
    width: 50px;
    height: 50px;
}
.page .pages .num {
    font-size: 35px;
}
}
@media (max-width: 1025px) {
.banner .banner-inner .banner-content .banner-title {
    font-size: 35px;
    margin-bottom: 1%;
}
.banner .banner-inner .banner-content .banner-desc {
    font-size: 24px;
}
.about-nav .about-nav-inner {
    margin: 20px auto;
}
.about-nav .about-nav-item {
    font-size: 16px;
}
}
@media (max-width: 900px) {
.about-nav .about-nav-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2,1fr);
    text-align: center;
    gap: 15px;
}
.about-nav .about-nav-item::after {
  width: 0px;
}
.about-nav .about-nav-item {
    font-size: 14px;
}
.cert .cert-inner{
    grid-template-columns: repeat(2, 1fr);
}
.page .page-prev svg,
.page .page-next svg{ 
    width: 40px;
    height: 40px;
}
.page .pages .num {
    font-size: 30px;
}
}
@media (max-width: 821px) {
.banner .banner-inner .banner-content .banner-title {
    font-size: 30px;
    margin-bottom: 1%;
}
.banner .banner-inner .banner-content .banner-desc {
    font-size: 21px;
}
}
@media (max-width: 768px) {
.banner{
    margin-top: 50px;
}
.banner .banner-inner .banner-content .banner-title {
    font-size: 25px;
    margin-bottom: 0%;
}
.page {
    justify-content: space-evenly;
    gap: 0px;
}
.page .pages {
    gap: 42px;
}
}
@media (max-width: 641px) {
.cert .cert-inner {
    gap: 30px;
}
}
@media (max-width: 521px) {
.banner .banner-inner .banner-content .banner-title {
    font-size: 20px;
    line-height: 30px;
}
.banner .banner-inner .banner-content .banner-desc {
    font-size: 16px;
}
.page .pages {
    gap: 22px;
}
}
@media (max-width: 431px) {
.banner .banner-inner .banner-content .banner-desc {
    display: none;
}

}
@media (max-width: 395px) {
.cert .cert-inner {
    gap: 20px;
}
}
@media (max-width: 375px) {
}
@media (max-width: 356px) {
}
@media (max-width: 321px) {
}