* {
    margin: 0;
    padding: 0;
    color: #252b3a;
    font-family: "Microsoft YaHei";
    box-sizing: border-box;
    text-decoration: none;
}
.flex_row {
    display: flex;
    flex-direction: row;
}

.flex_column {
    display: flex;
    flex-direction: column;
}

.widthB {
    width: 100%;
}

.heightB {
    height: 100%;
}

.font_size14 {
    font-size: 14px;
}

.font_size20 {
    font-size: 18px;
}

.font_size28 {
    font-size: 28px;
}

.block_center {
    margin: 0 auto;
}

.word_center {
    text-align: center;
}

.max_width {
    max-width: 1200px;
}

.head_center {
    position: relative;
    margin-top: 93px;
}

.head_center .head_center_left {
    position: absolute;
    left: 0;
    top: 0px;
    display: flex;
    flex-direction: column;
}

.head_center .head_center_left p {
    font-size: 16px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #666666;
    margin-top: 39px;
    width: 490px;
    line-height: 38px;
}

.head_center .head_center_left img {
    width: 469px;
    height: 50px;
}

.head_center .head_center_left a {
    width: 210px;
    height: 60px;
    background: #3860FF;
    border-radius: 6px;
    font-size: 18px;
    font-family: PingFang SC;
    color: #FFFFFF;
    cursor: pointer;
    margin-top: 50px;
    text-align: center;
    line-height: 60px;
}

.head_center .head_center_left a:hover {
    opacity: 0.8;
    transition: all 0.6s;
}

.head_center .head_center_right {
    position: absolute;
    width: 650px;
    height: 500px;
    right: 0;
    margin-top: -60px;
}

.head_center .head_center_right img {
    width: 100%;
    height: 100%;
}