.multi_aboutus{
    margin-top: 85px;
    position: relative;
    background:url(about-bottom.svg) no-repeat left bottom #f8f8f8;
}
.multi_aboutus:before{
    content:"";
    background:url(about-top.svg) no-repeat center top;
    z-index: -1;
    left: 0;
    right: 0;
    position: absolute;
    height: 415px;
    top: -380px;
}
.multi_aboutus .left{
    width: calc(50% - 15px);
    padding-bottom: 85px;
}
.multi_aboutus .introbox h4{
    font-size: 19px;
    color: var(--main-color);
    font-weight: 400;
}
.multi_aboutus .introbox h3{
    font-size: 43px;
    color: var(--darker);
    font-weight: 800;
    margin-top: -5px;
}
.multi_aboutus .introbox p{
    font-size: 17px;
    color: #777c7f;
    line-height: 1.8em;
    margin-top: 25px;
}
.multi_aboutus .image{
    top: 0;
    bottom: 85px;
    position: absolute;
    width: calc(50% - 129px);
    right: 63px;
    overflow: hidden;
}
.multi_aboutus .image .inside,
.multi_aboutus .image:before{
    filter: grayscale(100%);
    opacity: .7;
    content:"";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    min-height: 590px;
}
.multi_aboutus .image:before{
    background-color: var(--main-color);
    filter: grayscale(0);
    z-index: 1;
}
.multi_aboutus .navlist{
    margin: 30px 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--white);
    border: 1px solid #e5eaea;
    border-radius: 5px;
    min-height: 72px;
    justify-content: center;
}
.multi_aboutus .navlist .item{
    color: #696d6f;
    font-size: 16px;
}
.multi_aboutus .navlist .item i{
    color: #696d6f;
    margin-right: 14px;
    font-size: 20px;
}
.multi_aboutus .navlist .item.active{
    color: var(--db);
}
.multi_aboutus .navlist .item.active i{
    color: var(--main-color);
}
.multi_aboutus .navlist .break{
    margin: 0 30px;
    background-color: #e5eaea;
    min-width: 1px;
    height: 20px;
}
.multi_aboutus .item-text{
    font-size: 15px;
    color: var(--tgrey);
    line-height: 1.8em;
    font-weight: 300;
    margin-left: auto;
}
.multi_aboutus .item-text h2,
.multi_aboutus .item-text h3{
    color: #6a7073;
    font-size: 19px;
    font-weight: 400;
    margin-top: 25px;
}
.multi_aboutus .more{
    margin-top: 39px;
}
.multi_aboutus .more > *+*{
    margin-left: 3vw;
}
.multi_aboutus .phone i{
    font-size: 20px;
    color: var(--white);
    background-color: var(--main-color);
    height: 48px;
    min-width: 48px;
    border-radius: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 17px;
}
.multi_aboutus .phone span{
    font-size: 14px;
    color: var(--main-color);
    font-weight: 300;
}
.multi_aboutus .phone strong{
    display: block;
    color: var(--db);
    font-size: 18px;
}

/* rwd */
@media (max-width:990px){
    .multi_aboutus .image{
        display: none;
    }
    .multi_aboutus .left{
        width: 100%;
    }
}

@media (max-width:530px){
    .multi_aboutus .navlist{
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
    }
    .multi_aboutus .navlist .break{
        width: 100%;
        height: 1px;
        margin: 10px 0;
    }
    .multi_aboutus .navlist .item{
        display: flex;
        width: 100%;
        justify-content: flex-start;
        padding: 10px;
    }
    .multi_aboutus .more{
        flex-direction: column;
        align-items: flex-start; 
    }
    .multi_aboutus .more a+a{
        margin-top: 30px;
    }
}