.intro_box {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    margin-bottom: calc(100vw * 75 / 1200);
    width: 100%;
    padding: 0 calc(100vw * 60 / 1200);
}

.intro_box:nth-of-type(1) {
    margin-top: calc(100vw * 88 / 1200);
}

.intro_box:nth-of-type(2n) {
    flex-direction: row-reverse
}

.intro_box .title {
    min-width: calc(100vw * 168 / 1200);
    height: calc(100vw * 48 / 1200);
    color: #000000;
    font-size: calc(100vw * 18 / 1200);
}

.intro_box_left,
.intro_box_right {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.intro_box_left {
    flex: none;
    width: calc(100vw * 422 / 1200);
}

.show .intro_box_left {
    width: calc(100vw * 604 / 1200);
}

.point {
    display: flex;
    margin-bottom: calc(100vw * 10 / 1200);
    /* height: calc(100vw * 20 / 1200); */
    font-size: calc(100vw * 14 / 1200);
    color: #666666;
    /* align-items: flex-start; */
}

.correct_icon {
    margin-right: calc(100vw * 10 / 1200);
    margin-top: calc(100vw * 4 / 1200);
    width: calc(100vw * 20 / 1200);
}

.builed {
    padding-bottom: calc(100vw * 14 / 1200);
}

.builed .intro_box_left {
    position: relative;
}

.behind_desk {
    width: calc(100vw * 278 / 1200);
    margin-top: calc(100vw * 27 / 1200);
    position: relative;
    left: calc(100vw * 46 / 1200);
}

.front_desk {
    position: absolute;
    right: 0;
    width: calc(100vw * 245 / 1200);
    top: calc(100vw * 97 / 1200);
}

.show .intro_box_left {
    display: flex;
    flex-direction: row;
    padding-top: calc(100vw * 48 / 1200);
    position: relative;
    justify-content: space-between;
}

.center_desk {
    position: absolute;
    top: calc(100vw * 0 / 1200);
    left: calc(100vw * 126 / 1200);
    width: calc(100vw * 310 / 1200);
}

.left_desk {
    position: relative;
    width: calc(100vw * 252 / 1200);
    height: calc(100vw * 125 / 1200);
}

.right_desk {
    position: relative;
    margin-top: -calc(100vw * 10 / 1200);
    width: calc(100vw * 220 / 1200);
}

.table {
    width: calc(100vw * 424 / 1200);
}

.echart {
    width: calc(100vw * 515 / 1200);
}

.circle_blue {
    position: absolute;
}

.intro_box_left_fang {
    width: calc(100vw * 91 / 1200);
    height: calc(100vw * 57 / 1200);
    background: #D3E5F8;
    border-radius: calc(100vw * 5 / 1200);
    position: absolute;
    right: 0;
    top: calc(100vw * 27 / 1200);
}

.intro_box_left_long {
    width: calc(100vw * 126 / 1200);
    height: calc(100vw * 47 / 1200);
    background: #D3E5F8;
    border-radius: calc(100vw * 5 / 1200);
    position: absolute;
    top: calc(100vw * 173 / 1200);
    left: calc(100vw * 45 / 1200);
}

.video_blue {
    width: calc(100vw * 103 / 1200);
    height: calc(100vw * 97 / 1200);
    position: absolute;
    top: calc(100vw * 118 / 1200);
    right: calc(100vw * 234 / 1200);
    z-index: 88;
}

.intro_box_left_fang_two {
    width: calc(100vw * 151 / 1200);
    height: calc(100vw * 29 / 1200);
    background: #D3E5F8;
    border-radius: calc(100vw * 5 / 1200);
    position: absolute;
    right: 0;
    top: calc(100vw * 0 / 1200);
}

.yingyongchangjin{
    width: 100%;
    padding-top:calc(100vw * 50 / 1200);
    padding-bottom: calc(100vw * 54 / 1200);
}

.intro_box_left220 {
    height: calc(100vw * 220 / 1200);
}