html,
body {
    position: relative;
    height: 100%;
}
p{
    margin: 0;
}
html{
    overflow-y:scroll;
    font-size: 100px;
}
html{
    /*隐藏滚动条，当IE下溢出，仍然可以滚动*/
    -ms-overflow-style:none;
    /*火狐下隐藏滚动条*/
    overflow:-moz-scrollbars-none;
}

::-webkit-scrollbar{
    display:none;
}


body {
    background: #ffffff;
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    font-size: 14px;
    color: #000;
    margin: 0;
    padding: 0;
}

#header{
    position: fixed;
    top: 0;
    height: 60px;
    width: 100%;
    z-index: 999;
}

.ja-title{
    text-align: center;
}
.ja-title span{
    position: relative;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
}
@keyframes title-hover {
    from{
        width: 20px;
    }
    to{
        width: 100%;
    }
}
/* .ja-title span:after{
    width: 60px;
    position: absolute;
    top: 60px;
    height: 2px;
    background: #00a0e9;
    content: '';
    transform: translate( -50%, -50%);
    left: 50%;
    transition: width .2s;
} */

.ja-title span:hover:after{
    animation: title-hover  .5s ease-in-out  ;
    width: 100%;
}

/* .ja-font-white span{
    color: #ffffff !important;
} */
.ja-font-white span:after{
    background: #ffffff !important;
}

.ja-page-banner {
    position: relative;
}
.ja-page-banner > div {
    text-align: center;
    color: #ffffff;
    text-align: center;
    position: absolute;
    top: calc(50% + 30px - 245px / 2);
    width: 100%;
}
.ja-page-banner img{
    width: 100%;

}
.ja-page-banner .ja-page-banner-title {
    font-size: 45px;
    line-height: 60px;
    margin-bottom: 45px;
}
.ja-page-banner .ja-page-banner-text {
    font-size: 16px;
    line-height: 35px;
}

.ja-part {
    padding: 40px 0 60px;
}
.ja-part:nth-child(even) {
    background: #f3f3f3;
}
.ja-part-content {
    display: flex;
    justify-content: center;
    margin: 60px auto 0 auto;
}
.ja-part-description {
    width: 1200px;
    font-size: 16px;
    line-height: 25px;
    text-align: center;
    color: #B0B0B0;
    margin-bottom: 20px;
}
.ja-part-main {
    text-align: center;
    position: relative;
    width: 1200px;
    margin: 60px auto 0 auto;
}
.ja-part-content + .ja-part-main {
    margin: 0 auto;
}

/*底部样式开始*/
#footer .footer {
    /*background: #2E3139;*/
    color: #fff;
    display: flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    /* height: 260px; */
}
/*底部样式结束*/



.btn {
    position: relative;
    padding:10px 20px;
    font-size: 20px;
    line-height: 1.5;
    text-decoration: none;
    background: #1a1b1f;
    border-radius: 3px;
    outline: transparent;
    overflow: hidden;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    transition: 0.25s;
    z-index: 11;
    margin-top: 100px;
}
.btn-primary {
    --hue: 171;
}
.btn-ghost {
    background-color: transparent;
    /*color: #007aff;*/
    /*border-color: #007aff;*/
    color: #ffffff;
    border-color: #ffffff;
}
.btn-ghost:hover {
    /*color: white;*/
    color: #007aff;
    background: hsl(var(--hue), 100%, 41%);
}

.btn-slash::before {
    position: absolute;
    content: "";
    top: 50%;
    left: 50%;
    z-index: -1;
    width: 120%;
    height: 400%;
    /*background:  #ffffff;*/
    background: linear-gradient(      170deg,        rgba(255,255,255,0.9) 0%,      rgba(255,255,255,0.7) 20%,      rgba(255,255,255,0.2) 55%,      rgba(0,0,0,0.0) 56%,      rgba(0,0,0,0.0) 100%    );
    transform: translate(-50%, -50%) rotate(-45deg) scaleX(0);
    transition: 0.25s;
}
.btn-slash:hover {
    background: transparent;
}
.btn-slash:hover::before {
    transform: translate(-50%, -50%) rotate(-45deg) scaleX(1);
}