* {
    padding: 0;
    margin: 0;
    font-size: 16px;
    list-style: none;
    font-family: 'Arial', '微软雅黑';
}

a {
    text-decoration: none;
    color: black;
}

.nav>div>ul>li:nth-of-type(4)>div:first-of-type {
    top: 0 !important;
}

.nav>div>ul>li:nth-of-type(4)>div:last-of-type {
    bottom: 0 !important;
}

/*标题-----------------------------------------------------------------------------*/
.banner-technology {
    width: 100%;
    padding-top: calc(365/1920*100%);
    position: relative;
    background: url(/html/images/banner-technology.jpg) no-repeat center;
    background-size: contain;
}

.banner-technology>h1 {
    color: white;
    font-weight: normal;
    font-size: 55px;
    position: absolute;
    transition: all .2s;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -80%);
}

.banner-technology>div {
    position: absolute;
    bottom: 0;
    width: 100%;
    background: rgba(0, 0, 0, .4);
    transition: all .2s;
}

.banner-technology>div>p {
    line-height: 50px;
    display: flex;
    transition: all .2s;
    align-items: center;
    color: white;
    font-size: 14px;
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
}

.banner-technology>div>p>img {
    margin: 0 10px 0;
}

.banner-technology>div>p>span {
    font-size: 14px;
    margin: 0 10px 0;
}

/*标题end--------------------------------------------------------------------------*/
/*核心技术-------------------------------------------------------------------------*/
.core {
    padding-bottom: calc(93/1920*100%);
}

.core>h1 {
    transition: all .2s;
    font-weight: normal;
    color: #333333;
    text-align: center;
}

.container-core {
    transition: all .2s;
    width: 95%;
    max-width: 1400px;

}

.slide-core {
    padding: 26px;
    transition: all .2s;
    box-sizing: border-box;
    margin-bottom: 20px;
}

.slide-core>div {
    width: 100%;
    max-width: 382px;
    position: relative;
    font-size: 0;
    line-height: 0;
    margin-bottom: 30px;
}

.slide-core:hover .img-border {
    left: 0;
    top: 0;
    background: rgb(30, 169, 238);
    border: none;
    opacity: .6;
}

.img-border {
    transition: all .4s;
    position: absolute;
    left: -26px;
    top: -26px;
    width: 100%;
    padding-top: 100%;
    border: 2px solid rgb(30, 169, 238);
    box-sizing: border-box;
}

.slide-core>div>a {
    width: 100%;
    padding-top: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    display: inline-block;
}

.slide-core>section {
    display: flex;
    flex-direction: column;
}

.slide-core>section>span {
    transition: all .2s;
    font-size: 18px;
    color: rgb(0, 118, 192);
}

.slide-core>section>p:last-of-type {
    font-size: 15px;
    transition: all .2s;
    color: gray;
    line-height: 22px;
}

.slide-core>section>p:first-of-type {
    transition: all .2s;

    color: #333333;
    padding: 5px 0 13px;
    font-size: 18px;
}

/*核心技术end----------------------------------------------------------------------*/

@media screen and (min-width:640px) and (max-width:1024px) {
    .container-core {
        padding-bottom: 70px;
    }

    .slide-core>div {
        margin-bottom: 20px;
    }

    .slide-core {
        padding: 0;
    }

    .img-border {
        left: 0;
        top: 0;
        border: none;
        opacity: .6;
        background: rgb(30, 169, 238);
    }
}

@media screen and (max-width:640px) {
    .container-core {
        padding-bottom: 40px;
    }

    .slide-core>div {
        margin-bottom: 10px;
    }

    .slide-core {
        padding: 0;
    }

    .img-border {
        display: none !important;
    }

    .slide-core>section>span {
        font-size: 16px;
    }

    .slide-core>section>p:first-of-type {
        font-size: 16px;
        padding: 5px 0 5px;
    }

    .slide-core>section>p:last-of-type {
        font-size: 12px;
    }
}

/*标题自适应*/
@media screen and (min-width:1400px) {
    .core>h1 {
        height: 160px;
        line-height: 200px;
        font-size: 36px;
    }

}

@media screen and (min-width:1100px) and (max-width:1400px) {
    .core>h1 {
        height: 120px;
        line-height: 140px;
        font-size: 36px;
    }
}

@media screen and (min-width:768px) and (max-width:1100px) {
    .core>h1 {
        font-size: 30px;
        height: 100px;
        line-height: 120px;
    }
}

@media screen and (max-width:768px) {
    .core>h1 {
        font-size: 26px;
        height: 60px;
        line-height: 60px;
    }
}