body {
  overflow: hidden;
  font-family: Arial, sans-serif;
}

.business {
  height: 100vh;
  transition: transform 0.8s ease-in-out;
}

.page {
  height: 100vh;
  width: 100%;
  position: relative;
  background-size: cover;
  background-position: center;
}

.page1 {
  background-image: url(../img/bg-about-one.png);
}

.page2 {
    background-color: #fff;
}

.page3 {
  background-image: url(../img/bg-about-three.png);
}

.page4 {
    background-color: #fff;
}

/* page1 */
.company-name{
    position: absolute;
    top: 15%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 10%;
    font-weight: bold;
    font-size: 36px;
    align-items: flex-end;
    color: #173F3F;
    letter-spacing: 1px;
}
.company-name img{
    width: 34px;
    height: 34px;
}
.company-info{
    position: absolute;
    top: 50%;
    color: #173F3F;
    padding: 0 10%;
    width: 100%;
    transform: translateY(-50%);
}
.company-title{
    font-size: 25px;
    font-weight: bold;
}
.company-subtitle{
    font-size: 18px;
    margin-top: 1vh;
}
.company-video{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 20%;
}
.company-video img{
    width: 100%;
}
.company-detail{
    position: absolute;
    bottom: 15%;
    width: 100%;
    padding: 0 10%;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    font-size: 14px;
}
.company-desc p{
    text-indent: 2em;
    margin-top: 5px;
}
.company-time{
    color: #173F3F;
}
.company-desc{
    width: 30%;
    letter-spacing: 1px;
}

.service{
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
.service img{
    width: 25%;
}
.service-detail{
    width: 40%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.service-title{
    color: #234949;
    font-size: 36px;
    font-weight: bold;
    letter-spacing: 1px;
    margin-bottom: 2vh;
}
.service-desc{
    color: #222222;
    margin-top: 2vh;
    letter-spacing: 1px;
}


/* 内容动画 */
.content {
  z-index: 2;
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
  width: 100%;
  height: 100%;
}


.active .content {
  opacity: 1;
  transform: translateY(0);
}


.history-title{
    position: absolute;
    top: 15%;
    padding: 0 10%;
}
.history-title .zh{
    font-size: 40px;
    font-weight: bold;
    color: #fff;
    letter-spacing: 3px;
}
.history-title .en{
    font-size: 30px;
    margin-top: 10px;
    color: #fff;
}
.history-item{
    position: absolute;
    display: flex;
    align-items: flex-start;
    color: #FFFFFF;
}
.history-line{
    background: linear-gradient(180deg, #FFFFFF 0%, #0E385E 100%);
    width: 2px;
    height: 25vh;
    margin-right: 10px;
}

.history-item.down{
    align-items: flex-end;
}

.history-item.down .history-line{
    background: linear-gradient(0deg, #FFFFFF 0%, #0E385E 100%);
}

.history-time{
    font-size: 20px;
}
.history-desc{
    width: 20%;
    margin-top: 10px;
    background: linear-gradient(180deg, #FFFFFF 0%, #418AC1 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    font-size: 14px;
}

.history-item:nth-child(2){
    top: 50%;
    left: 20%;
}

.history-item:nth-child(3){
    top: 30%;
    left: 42%;
}

.history-item:nth-child(4){
    top: 15%;
    left: 65%;
}

.history-item:nth-child(5){
    top: 70%;
    left: 35%;
}

.history-item:nth-child(6){
    top: 60%;
    left: 55%;
}

.history-item:nth-child(7){
    top: 50%;
    left: 72%;
}

.pg-header{
    height: 60%;
}
.pg-header img{
    width: 100%;
}
.pg-footer{
    height: 40%;
    /*background-image: url(../img/bg-paper.png);*/
    background-size: cover;
}
.pg-title{
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 2vh 10%;
    margin: 2vh 0;
    border-bottom: 1px solid #E3E7E6;
}
.pg-name{
    font-weight: bold;
    font-size: 32px;
    color: #173F3F;
}
.pg-icon img{
    width: 20px;
    margin-left: 20px;
}
.pg-nav{
    padding: 0 10%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #173F3F;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    margin: 8vh 0;
}
.footer-bottom{
    padding: 0 10%;
}
.header-user-menu{
    top: 25px;
}