.main .column-1, .main .column-2, .main .column-3 {
    padding: 70px 0;
}

.main .column-1 .column-1-left {
    width: 620px;
}

.main .column-1 .column-1-left img {
    display: block;
    width: 100%;
}

.main .column-1 .column-1-right {
    width: 550px;
}

.main .column-1 .column-1-right li {
    font-size: 16px;
}

.main .column-1 .column-1-right li::before {
    display: block;
    content: "1";
    margin: 0 auto;
    box-sizing: border-box;
    cursor: text;
    width: 40px;
    height: 40px;
    background-image: url('../images/index/pic02.png');
    background-size: 100% 100%;
    background-color: rgb(78, 78, 79);
    color: rgb(78, 79, 79);
    font-size: 20px;
    line-height: 39px;
    outline: none 0px !important;
    text-align: center;
    margin-bottom: 20px;
}

.main .column-1 .column-1-right li:nth-of-type(2)::before {
    content: "2";
}

.main .column-1 .column-1-right li:nth-of-type(3)::before {
    content: "3";
}

.main .column-1 .column-1-right li:nth-of-type(2) {
    margin: 32px 0;
}

.main .column-2 {
    background: #ececea;
}

.main .column-2 .video-box {
    width: 800px;
    height: 500px;
    margin: 0 auto;
}

.main .column-3 .column-3-title {
    width: 640px;
    margin: 0 auto 30px;
}

.main .column-3 .column-3-title img {
    display: block;
    width: 100%;
}

.main .column-3 .int-list {
    width: 600px;
    height: 300px;
    padding: 20px 80px;
    box-sizing: border-box;
}

.main .column-3 .int-list .int-list-title {
    text-align: center;
}

.main .column-3 .int-list .int-list-title p {
    font-weight: 600;
    font-size: 60px;
    color: rgb(135, 135, 222);
}

.main .column-3 .int-list .int-list-title span {
    margin-top: -32px;
    display: block;
    margin-left: 35px;
    color: #000;
    font-weight: 600;
}

.main .column-3 .int-list .int-list-title::after {
    display: inline-block;
    content: "";
    width: 20px;
    height: 3px;
    background: rgb(0, 0, 0);
    overflow: hidden;
}

.main .column-3 .int-list h4 {
    font-size: 18px;
    font-weight: 500;
    color: rgb(2, 30, 170);
    margin: 20px 0;
}