.mainbox {
    background: none;
}
.header {
    height: 130px;
    background-image: none;
}
.all-content {
    width: 100%;
    height: 831px;
    overflow: hidden;
    position: relative;
}
.all-content .bg-img {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    position: absolute;
    top: 0;
    left: 0;
}
.all-content .main {
    margin: 0 auto;
    margin-top: 187px;
    width: 1200px;
    position: relative;
}
.all-content .main h1 {
    padding-left: 21px;
    font-size: 38px;
    font-weight: bold;
    color: #333333;
    text-align: left;
    position: relative;
}
.all-content .main h1::before {
    content: "";
    display: block;
    width: 8px;
    height: 36px;
    background-color: #6097D5;
    position: absolute;
    top: 0;
    left: 0;
}
.all-content .button {
    margin-top: 93px;
    text-align: left;
}
.all-content .button .system {
    display: inline-block;
    vertical-align: middle;
}
.all-content .button .system a {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    align-content: center;
    width: 210px;
    height: 210px;
    background: #60D5C6;
    border-radius: 50%;
    transition: all .5s;
    position: relative;
    z-index: 1;
}
.all-content .button .system a::before{
    content: "";
    display: block;
    width: 130%;
    height: 130%;
    border-radius: 50%;
    background-color: rgba(96,213,198,0.2);
    position: absolute;
    z-index: -1;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
    transition: all .5s;
}
.all-content .button .system:nth-of-type(2) {
    margin-left: 150px;
}
.all-content .button .system:nth-of-type(2) a {
    background: #6097D5;
}
.all-content .button .system:nth-of-type(2) a::before {
    background-color: rgba(96,151,213,0.2);
}
.all-content .button .system a .icon {
    width: 66px;
}
.all-content .button .system a .text {
    margin: 16px 0;
    font-size: 20px;
    color: #FFFFFF;
}
.all-content .button .system a .arrow img{
    display: inline-block;
    width: 11px;
}
.all-content .button .system a:hover::before {
    width: 135%;
    height: 135%;
}
.all-content .button .system .intro {
    margin-top: 49px;
    text-align: center;
    font-size: 16px;
    color: #333333;
    line-height: 30px;
}