.con {
    padding: 110px 0px;
    display: flex;
    align-items: flex-start;
}

.leftUl {
    width: 30%;
    flex-shrink: 0;
}

.leftUl li {
    cursor: pointer;
    position: relative;
    margin-bottom: 50px;
    color: #1751A2;
    opacity: 0.5;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

.leftUl li::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0px;
    transform: translateY(-50%);
    display: block;
    width: 0px;
    height: 2px;
    background: #1751A2;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

.leftUl p {
    max-width: 280px;
    /*font-family: "PlayfairDisplay-Bold";*/
    font-family: "Montserrat-Regular";
}

.leftUl li.on {
    padding-left: 75px;
    opacity: 1;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

.leftUl li.on::before {
    width: 55px;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

.rightCon {
    color: #333;
}

.rightCon .rightBox {
    display: none;
}

.rightBox h3 {
    font-family: "Rany-Bold";
    margin-bottom: 36px;
}

.rightBox h4 {
    margin-bottom: 16px;
}

.rightBox p {
    color: #666;
    margin-bottom: 40px;
}

.rightBox img {
    display: block;
    width: 100%;
    height: auto;
}

/* 适配 */
@media (max-width: 1440px) {
    .leftUl {
        font-size: 28px;
    }

    .leftUl li {
        margin-bottom: 40px;
    }

    .leftUl li.on {
        padding-left: 65px;
    }

    .leftUl p {
        max-width: 260px;
    }

    .leftUl li.on::before {
        width: 45px;
    }
}

@media (max-width: 1280px) {
    .leftUl {
        font-size: 24px;
        width: 30%;
    }

    .leftUl p {
        max-width: 220px;
    }
}

@media (max-width: 992px) {
    .leftUl {
        font-size: 22px;
    }

    .leftUl p {
        max-width: 200px;
    }

    .leftUl li.on {
        padding-left: 45px;
    }

    .leftUl li.on::before {
        width: 30px;
    }
}

@media (max-width: 767px) {
    .con {
        flex-wrap: wrap;
        padding: 50px 0px;
    }

    .leftUl,
    .rightCon {
        width: 100%;
    }

    .leftUl {
        font-size: 18px;
        margin-bottom: 30px;
    }

    .leftUl p {
        max-width: unset;
    }

    .leftUl li {
        margin-bottom: 16px;
    }

    .rightBox h3 {
        font-size: 26px;
        margin-bottom: 16px;
    }

    .rightBox p {
        margin-bottom: 20px;
    }
}