html,
body,
div,
p,
ul,
li,
h1,
h2,
h3,
h4,
h5,
h6,
ol,
header,
main,
nav,
footer {
    padding: 0;
    margin: 0;
}



ul,
ol {
    list-style: none;
}

a {
    text-decoration: none;
}

html {
    font-size: 10px;
    width: 100%;
    height: 100%;
}

body {
    width: 100%;
    height: 100%;
}

#app {
    width: 100%;
    height: auto;
    /* position: relative; */
}


/* 头部图片 */
header {
    width: 100%;
}

.swiper-slide>img {
    width: 100%;
}

.oneImg {
    width: 100%;
}

.oneImg>img {
    width: 100%;
}



/* 导航部分 */

nav{
    width: 100%;
    height: auto;
    margin-top: -5px;
}
nav>ul{
    width: 70%;
    overflow: hidden;
    margin: auto;
}
.nav-item{
    height: 5rem;
    float: left;
}

.nav-item>a{
    padding: 0 2.2rem;
    line-height: 5rem;
    font-size: 1.6rem;
    height: 100%;
}








/* 倒计时部分css */
.countdown {
    width: 100%;
    padding: 4rem 0 10rem;
    position: relative;
    overflow: hidden;
}

.countdown>div {
    width: 80%;
    margin: auto;
}

.date {
    width: 100%;
}

.date>div {
    width: 100%;
    text-align: center;
    font-size: 18px;
}

.date>ul {
    width: 100%;
    text-align: center;
    font-size: 18px;
    margin: 1rem 0 4rem;
    display: flex;
    justify-content: center;
}

.colon {
    width: 5rem;
    min-width: 3rem;
    text-align: center;
    line-height: 5.8rem;
    font-size: 3rem;
}

.date-item {
    padding: 1rem 2rem;
    background-color: red;
}

.date-item>p {
    font-size: 3rem;
    font-weight: 700;
}

.date-item>span {
    font-size: 1.3rem;
}

.end,
.have {
    display: none;
    height: 10rem;
}

.have>h2 {
    text-align: center;
    font-size: 5rem;
    margin: 3rem 0 5rem;
}

.end>h2 {
    text-align: center;
    font-size: 5rem;
    margin: 3rem 0 5rem;
}


/* 倒计时下方图片部分 */
.piece {
    width: 100%;
}

.piece>ul {
    display: flex;
    justify-content: space-between;
}

.piece-item {
    width: 30%;
    height: 22.2rem;
    padding: 0 12px;
    box-sizing: border-box;
    transition: all .2s linear;
    margin-top: 0;
    margin-left: 0;
}
.piece-item:hover{
    width: 31%;
    height: 23.2rem;
    box-sizing: border-box;
    transition: all .2s linear;
    margin-top: -5px;
    margin-left: -5px;
}


.piece-item>a{
    display: block;
    width: 100%;
    
}

.piece-icon {
    font-size: 4rem;
    width: 7.6rem;
    height: 7.6rem;
    text-align: center;
    position: relative;
    margin:3rem auto;
}


.piece-icon>div {
    width: 100%;
    height: 100%;
    line-height: 7.6rem;
    background:url('../image/circle.webp') no-repeat  0 0 /100% 100%;
}


.piece-item>a>p{
    text-align: center;
    width: 100%;
    font-weight: 700;
    font-size: 2.4rem;
}
.piece-item>a>span{
    text-align: center;
    display: block;
    width: 100%;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    margin-top: 1rem;
}








/* 左轮播右文字部分 */
.swiper-box {
    width: 100%;
    padding: 3.5rem 0;
    
}

.swiper-box {
    width: 100%;
    padding: 3.5rem 0;
    position: relative;
}

.swiper-pox {
    width: 80%;
    margin: auto;
    display: flex;
    position: relative;
    padding: 10rem 0;
}
.swiper-pox::before {
    content: '';
    display: block;
    height: 8rem;
    width: 100%;
    position: absolute;
    top: 30px;
    right: 0;
    background: url("../image/wel_top.webp") top right no-repeat;
}
.swiper-pox::after {
    content: '';
    display: block;
    height: 6rem;
    width: 100%;
    position: absolute;
    bottom: 40px;
    right: 0;
    background: url("../image/wel_bot.webp") no-repeat 0 0 /100% 100%;
}

.tit_bg {
    font-size: 6rem;
    font-style: italic;
    color: #e1e1ee;
    font-weight: bold;
    position: absolute;
    line-height: 6rem;
    top: 5.6rem;
    left: 28.2rem;
}

.swiper-pox>div {
    width: 49%;
}

.swiper {
    overflow: hidden;
}

.swiper>ul {
    width: 100%;

}

.swiper li {
    width: 100%;
}

.swiper img {
    width: 100%;
    height: 34rem;
}

.text {
    height: 34rem;
    padding: 12px 24px;
    box-sizing: border-box;
}

.text>h4 {
    font-size: 35px;
}

.text>div {
    margin-top: 20px;

}

.text>div>p {
    text-indent: 40px;
    line-height: 25px;
}









/* 会议动态部分 */
.trends{
    width: 100%;
    margin-top: 3rem;
    margin-bottom: 5rem;
}
.trends>div{
    width: 80%;
    margin: auto;
    display: flex;
    border: 1px solid #ebebfc;
}

.trends-left{
    width: 15%;
    padding: 20px 0 ;
    padding-left: 10px;
    box-sizing: border-box;
}
.trends-left>h2{
    font-size: 24px;
}
.trends-left>p{
    width: 100%;
    font-weight: bold;
    color: #9f9fa0;
    font-size: 12px;
    line-height: 13px;
    letter-spacing: 4px;
    margin-top: 10px;
}

.trends-right{
    width: 80%;
    padding: 4rem 0;
    font-size: 1.8rem;
}

.trends-right ul{
   list-style: disc ;
}








/* 底部联系我们的css */
footer {
    width: 100%;
    position: relative;
    overflow: hidden;
}

footer>div {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

.footer {
    margin: 50px 0;
}

.footer>ul {
    margin-top: 30px;
    overflow: hidden;
}

.footer-item {
    float: left;
    width: 25%;
    line-height: 30px;
    font-size: 14px;
}

.footer-item>span {
    display: block;
}

/* logo部分 */
.footer-logo {
    width: 100%;
    text-align: center;
    line-height: 25px;
    margin-bottom: 20px;
}

.footer-logo>h4 {
    margin-top: 20px;
}

.footer-logo>p {
    font-size: 12px;

}

.footer-logo>div>a {
    margin: 0 10px;
    font-size: 14px;
}

.footer-logo>div>a:hover {
    text-decoration: underline;
}

.footer-logo>a {
    font-size: 14px;
}

.footer-logo>a:hover {
    text-decoration: underline;
}

.footer-logo>div>a>img {
    width: 18px;
    height: 18px;
}





/* 一键回到顶部  的css */
.Back-to-top {
    width: 45px;
    height: 45px;
    text-align: center;
    line-height: 45px;
    position: fixed;
    right: 50px;
    bottom: 50px;
    display: none;
    border-radius: 45px;
    cursor: pointer;
    z-index: 10000;
}

.Back-to-top>span {
    font-size: 16px;
    font-weight: 700;
}