.volcanicMud {
    padding: 70px 0px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.volcanicMud img {
    display: block;
    width: 45%;
    height: auto;
}

.volcanicMudR {
    width: 47%;
    color: #666;
}

.volcanicMudR h3 {
    margin-bottom: 40px;
    color: #333;
    /*font-family: "PlayfairDisplay-Bold";*/
    font-family: "Montserrat-Bold";
}

/*  */
.principle {
    background: #F8F8F8;
}

.principleBox {
    padding: 80px 0px;
    text-align: center;
    color: #666;
}

.principleBox h3 {
    color: #333;
    /*font-family: "PlayfairDisplay-Bold";*/
    font-family: "Montserrat-Bold";
    margin-bottom: 50px;
}

.principleBox>p {
    line-height: 1.5;
}

.principleBox ul {
    margin-top: 70px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.principleBox li {
    width: 31%;
}

.principleBox .imgBox {
    width: 100%;
    padding-top: 60%;
    overflow: hidden;
    border-radius: 20px;
    position: relative;
    margin-bottom: 28px;
}

.principleBox .imgBox img {
    position: absolute;
    top: 0px;
    left: 0px;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

.principleBox .imgBox:hover img {
    transform: scale(1.1);
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

/*  */
.application {
    padding: 80px 0px;
}

.application>h3 {
    color: #333;
    /*font-family: "PlayfairDisplay-Bold";*/
    font-family: "Montserrat-Bold";
    margin-bottom: 70px;
    text-align: center;
}

.application li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #666666;
}

.application li:nth-child(even) {
    flex-direction: row-reverse;
    margin-top: 50px;
}

.applicationL h3 {
    /*font-family: "PlayfairDisplay-Bold";*/
    font-family: "Montserrat-Bold";
    padding-bottom: 25px;
    margin-bottom: 40px;
    position: relative;
    color: #333;
}

.applicationL h3::after {
    content: "";
    position: absolute;
    bottom: 0px;
    left: 0px;
    display: block;
    width: 50px;
    height: 3px;
    background: #1751A2;
}

.applicationL {
    width: 42%;
}

.applicationR {
    width: 50%;
}

.applicationR div {
    width: 100%;
    padding-top: 55%;
    position: relative;
    overflow: hidden;
}

.applicationR img {
    position: absolute;
    top: 0px;
    left: 0px;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

.applicationR:hover img {
    transform: scale(1.1);
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

/*  */
.tips {
    padding: 80px 0px;
    background: url(../images/tipsBg.png)no-repeat center center;
    background-size: cover;
}

.tipsBox {
    width: 50%;
    color: #666;
}

.tipsBox h3 {
    color: #333;
    /*font-family: "PlayfairDisplay-Bold";*/
    font-family: "Montserrat-Bold";
    margin-bottom: 40px;
}

.tipsBox ul {
    margin-top: 50px;
}

.tipsBox li {
    display: flex;
    align-items: center;
    font-weight: bold;
    color: #1751A2;
    margin-bottom: 16px;
}

.tipsBox li:last-of-type {
    margin-bottom: 0px;
}

.tipsBox li img {
    display: block;
    width: 30px;
    height: 30px;
    margin-right: 16px;
}

.tipsBg2 {
    display: none;
}

/* 适配 */
@media (max-width: 767px) {

    .volcanicMud,
    .principleBox,
    .application,
    .tips {
        padding: 40px 0px;
    }

    .volcanicMud {
        flex-wrap: wrap;
    }

    .volcanicMud img {
        width: 100%;
        margin-bottom: 20px;
    }

    .volcanicMudR {
        width: 100%;
    }

    .volcanicMudR h3 {
        margin-bottom: 22px;
    }

    .principleBox h3 {
        margin-bottom: 30px;
    }

    .principleBox ul {
        flex-wrap: wrap;
        margin-top: 30px;
    }

    .principleBox li {
        width: 100%;
        margin-bottom: 30px;
    }

    .principleBox li:last-child {
        margin-bottom: 0px;
    }

    .principleBox .imgBox {
        margin-bottom: 14px;
    }

    .application li {
        flex-wrap: wrap;
    }

    .application li:nth-child(even) {
        flex-direction: row;
    }

    .applicationL,
    .applicationR {
        width: 100%;
    }

    .applicationR {
        margin-top: 16px;
    }

    .applicationL h3 {
        padding-bottom: 18px;
        margin-bottom: 20px;
    }

    .applicationL h3::after {
        width: 20px;
    }

    .tips {
        background: #F8F8F8;
    }

    .tipsBox {
        width: 100%;
    }

    .tipsBox h3 {
        margin-bottom: 20px;
    }

    .tipsBg2 {
        display: block;
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-radius: 10px;
    }

    .tipsBox ul {
        margin-top: 30px;
        margin-bottom: 30px;
    }
}