.about_banner {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 40vh;
}

.contact-bg {
    background-image: url(../images/message.jpeg);
}

.about_bg_opcity {
    background-color: rgba(0, 0, 0, 0.1);
    width: 100%;
    display: flex;
    height: inherit;
    justify-content: space-around;
}

.about_banner_content {
    margin: auto 0;
    width: 50%;
}

.about_banner_content p {
    color: #fff;
    margin: 10px 0;
    font-size: 1.3rem;
}

.crumbs {
    padding: 30px 0 20px 0;
    font-size: 0.94rem;
    border-bottom: 1px solid rgba(209, 209, 209, 1);
}

.crumbs>div {
    display: inline-block;
    cursor: pointer;
    color: #4e4e4e;
    font-size: 1.06rem;
}

.crumbs span.iconfont {
    margin: 0 4px;
    font-size: 0.88rem;
}

@media screen and (max-width: 1140px) {
    .about_banner_content {
        width: 80%;
    }

    .about_banner {
        height: 30vh;
    }

    .crumbs {
        padding: 20px 0 15px 0;
        font-size: 0.94rem;
        border-bottom: 1px solid rgba(209, 209, 209, 1);
    }
    
    
}



.about-main {
    max-width: 1140px;
    margin: 0 auto;
}


.introduction {
    display: flex;
    flex-direction: row;
    padding: 80px 0;

}

.introduction-titl-box {
    flex: 2;
}

.about-main>p {
    font-size: 1.06rem;
    color: rgb(109, 109, 109);
}

.introdution-titl {
    font-size: 2.19rem;
    font-weight: 600;
    padding-bottom: 10px;
    margin-bottom: 25px;
    position: relative;
}

.introdution-titl::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 4px;
    background: #4386a7;
}

.introduction-rig {
    flex: 5;
}

.introduction-rig-titl {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 30px;
    padding-top: 15px;
}



.introduction-rig>p {
    color: rgb(83, 83, 83);
    font-size: 1rem;
    line-height: 30px;
    margin-bottom: 30px;
    text-indent: 2em;
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 20px;
}

.grid div {
    text-align: center;
    box-shadow: 0 0 10px #cecece;
}

.grid span.iconfont {
    font-size: 1.56rem !important;
    line-height: 50px;
    color: rgba(42, 130, 228, 1);
}

.grid span {
    font-size: 1.06rem;
    font-weight: 600;
    display: block;
    border-radius: 100%;
    width: 50px;
    height: 50px;
    margin: 0 auto 10px auto;
    background-color: #fff;
    border: 1px dashed rgba(42, 130, 228, 1);
}

.span-col-2,
.span-row-2 {
    font-size: 16px;
    font-weight: 500;
}


.span-col-2 {
    grid-column: span 2 / auto;
}

.span-row-2 {
    border-radius: 10px;
    grid-row: span 2 / auto;
    padding: 20px;
}

.span-row-4 {
    border-radius: 10px;
    background: url(../images/ditu.png) center no-repeat;
    background-size: cover;
    grid-row: span 4 / auto;
}

@media screen and (max-width: 1140px) {
    html{
        font-size: 15px;
    }
    .about-main {
        max-width: 80%;
    }
    
    .introduction {
        flex-direction: column;
        padding: 80px 0;
    }
    
}

@media screen and (max-width: 570px) {
    .about-main {
        max-width: 80%;
    }
    
    .introduction {
        flex-direction: column;
        padding: 40px 0;
    
    }

    .grid {
        display: grid;
        grid-template-columns: repeat(1, 1fr);
        grid-gap: 20px;
    }
    
    .span-row-2 {
        grid-row: span 2 / auto;
        width: calc(100% - 40px);
        padding: 20px;
    }    
}






.message-flex {
    border-top: 1px solid #eeeeee;
    display: flex;
    justify-content: space-between;
    padding: 80px 0;
}

.message-flex-tip {
    flex: 3;
}

.message-flex-tip-titl1 {
    font-size: 1rem;
    color: rgb(51, 51, 51);
}

.message-flex-tip-titl2 {
    font-size: 2.19rem;
    font-weight: 600;
    padding-bottom: 10px;
    margin-bottom: 25px;
    position: relative;
}

.message-flex-tip-titl2::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 4px;
    background: #4386a7;
}

.message-flex-tip p {
    font-size: 1rem;
    width: 80%;
}

.message-flex-tip span {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 15px;
}

.message-flex-form {
    flex: 5;
}

.message-flex-form form {
    padding-left: 25px;
}

.input-group-lg>div {
    margin-bottom: 25px;
}

label,
.teaxt>div {
    display: block;
    margin-bottom: 13px;
    font-size: 17px;
    color: #494949;
}

label span,
.teaxt span {
    color: red;
}

input {
    border: none;
    background: rgba(242, 248, 255, 1);
    border-radius: 5px;
    padding: 5px 15px;
    line-height: 40px;
    font-size: 15px;
    width: calc(100% - 30px);
    outline: none;
    color: #4e4e4e;

}

.input-group-lg {
    display: flex;
    justify-content: space-between;
    gap: 20%;
}

input:focus,
textarea:focus {
    background-color: rgba(242, 248, 255, 1);
    border: 1px solid #abd7e4;
}

textarea {
    margin: 15px 0 0 0;
    border: 1px solid #ffffff;
    background: rgba(242, 248, 255, 1);
    border-radius: 5px;
    font-size: 16px;
    width: calc(100% - 40px);
    padding: 20px;
    border-bottom: 1px solid #f5f5f5;
    outline: none;
}

.button-submit {
    width: 120px;
    height: 40px;
    margin-top: 20px;
    border-radius: 5px;
    color: #fff;
    border: none !important;
    background: linear-gradient(to right, #44bfe6, #4386a7);
}

button:focus {
    outline: none;
}

@media screen and (max-width: 1140px) {
    .message-flex{
        flex-direction: column;
        gap: 50px;
        justify-content: flex-start;
        padding: 80px 0;
    }

    .message-flex-form form {
        padding-left: 0;
        padding-top: 30px;
    }

    .input-group-lg {
        display: flex;
        justify-content: flex-start;
        gap: 20%;
    }  
}

@media screen and (max-width: 570px) {
    .message-flex{
        gap: 0;
        padding: 50px 0;
    }

    .message-flex-form form {
        padding-left: 0;
        padding-top: 30px;
    }

    .input-group-lg {
        display: flex;
        flex-direction: column;
        gap: 20%;
    }  

    .input-group-lg>div {
        margin-bottom: 15px;
    }    
    
    .introdution-titl {
        font-size: 1.8rem;
        padding-bottom: 10px;
        margin-bottom: 25px;
    }    
}





.about-bg {
    background: url(../images/about.jpg) no-repeat center;
}

.introduce {
    display: flex;
    justify-content: space-around;
    padding: 40px 0 70px 0;
}

.introduct_lef {
    flex: 2;
    padding-right: 40px;
}

.introduct_lef_title1 {
    font-size: 24px;
    font-weight: 700;
    color: #202020;
    margin: 15px 0;
}

.introduct_lef_title2 {
    font-size: 18px;
    font-weight: 700;
    color: #4e4e4e;
    margin-bottom: 10px;
}

.introduct_rig {
    flex: 5;
}

.introduct_rig p {
    line-height: 30px;
    color: #494949;
}


.bg {
    background: url(../images/bg.jpg) no-repeat center;
    background-size: cover;
    padding-bottom: 100px;

}






.banner-bg {
    background: url(../images/introduction.jpeg) no-repeat center;
    background-size: cover;
    padding: 12vh 0;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.banner-bg::before{
    position: absolute;
    content: '';
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #00000059;
    z-index: 0;
}

.banner_flex {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-around;
}

.num{
    color: #fff;
    font-size: 4.5rem;
    font-weight: 600;
}

.flex_item div:nth-child(2){
    font-size: 1.06rem;
    color: #ffffff;
}


@media screen and (max-width: 1140px) {
    .introduce {
        flex-direction: column;
        padding: 40px 0 70px 0;
    }
     
    .banner-bg {
        padding: 12vw 0;
    }
    
    .banner_flex {
        gap: 50px;
        margin: 0 auto;
        width: 80%;
        flex-wrap: wrap;
        justify-content: flex-start;
    }    
}


@media screen and (max-width: 570px) {
    html{
        font-size: 13px;
    }
    .bg{
        padding-bottom: 60px;
    }
    .introduce {
        flex-direction: column;
        padding: 20px 0 30px 0;
    }
     
    .banner-bg {
        padding: 12vw 0;
    }
    
    .banner_flex {
        gap: 50px;
        margin: 0 auto;
        width: 80%;
        flex-wrap: wrap;
        justify-content: flex-start;
    }    
}