header {
    display: flex;
    position: fixed;
    width: 100%;
    z-index: 9;
    top: 0;
    justify-content: space-between;
    align-items: center;
    padding: 0 5.128vw;
    box-sizing: border-box;
    height: 12.821vw;
    background: url(../images3/bg_header.png) no-repeat;
    background-size: 100% 100%;
}

header .imgbox img {
    width: 3.077vw;
}

header h1 {
    font-size: 5.385vw;
    font-weight: bold;
    color: #ffffff;
    font-family: SourceHanSansCN-Regular;
}

.top_btn {
    display: flex;
    align-items: center;
    height: 12.308vw;
    justify-content: center;
    background: url(../images3/top_btn_bg.png) no-repeat;
    background-size: 100% 100%;
}

.top_btn a {
    display: block;
    color: #fff;
    text-align: center;
    line-height: 7.692vw;
    margin: 0 9.897vw;
    font-size: 3.333vw;
    height: 7.692vw;
    font-family: 宋体;
    font-weight: bold;
    letter-spacing: .256vw;
    line-height: 7.692vw;
}

.top_btn a.bs {
    width: 30.256vw;
    color: #000993;
    /* text-shadow: 0vw 0vw 1.282vw .513vw rgba(255, 255, 255, 0.6); */
    background: url(../images3/bg_wj.png) no-repeat;
    background-size: 100% 100%;
}

.top_btn.lines::after {
    background: url(../images3/line1.png) no-repeat;
    background-size: 100%;
}

.top_btn.lines::before {
    background: url(../images3/line1.png) no-repeat;
    background-size: 100%;
}