body {
    margin: 0;
    width: 100vw;
    overflow: hidden;
}

/* 底部样式 */
footer {
    text-align: center;
}

/* 头部样式 */
.header {
    width: 100%;
    height: 65px;
    background: white;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header .companyName {
    display: block;
    margin-right: 32%;
    font-size: 25px;
    font-weight: bolder;
}

.header a {
    font-size: 14px;
    color: black;
    margin-right: 60px;
    text-decoration: none;
}

.header .act {
    font-size: 16px;
    font-weight: bolder;
}

/* swiper-slide */
.swiper-slide a {
    color: #67C23A;
    font-size: 20px;
}

.down-button div {
    width: 200px !important;
    color: #fff !important;
    background-color: #67c23A !important;
    height: 70px !important;
    text-align: center !important;
    line-height: 70px !important;
    font-size: 26px !important;
}

.part {
    width: 100%;
    height: 700px;
    background: url(../img/back.jpg);
    display: flex;
    justify-content: center;
    align-items: center;
}

.right {
    width: 50%;
    margin-left: 150px;
    color: white;
    font-family: KaiTi;
    letter-spacing: 2px;
    line-height: 40px;
}

#t1 {
    font-size: 40px;
    margin-bottom: 30px;
}

#t2 {
    font-size: 35px;
    margin-bottom: 50px;
}

#t3 {
    font-size: 27px;
}

/* swiper样式 */
.swiper-pagination-bullet-active {
    background-color: #00ff33;
}

.swiper-container {
    --swiper-navigation-color: #00ff33;
    --swiper-navigation-size: 30px;
}

.swiper-button-prev {
    left: 40px;
}

.swiper-button-next {
    right: 40px;
}


.letter{
    width: 80%;
    /* text-align: center; */
    color: #ffffff;
}
.letter h2{
    text-align: center;
}

.appIcp{
padding: 30px 0;
font-size: 26px;
}