.nav-active {

    background-image: linear-gradient(0deg, #ddddeb 0%, #ffffff 100%);

}



.nav-item:hover {

    background-image: linear-gradient(0deg, #ddddeb 0%, #ffffff 100%);

}



.nav-link:hover {

    color: rgba(31, 45, 61, .6) !important;

}



.banner img {

    width: 100%;

}



.cooperate {

    padding: 85px 0 70px;

    background-color: #f7f7ff;

}



.cooperate .title {

    text-align: center;

}



.cooperate .title h3 {

    color: #00004c;

    font-size: 34px;

}



.cooperate .title p {

    font-size: 20px;

    color: #40436a;

}



.cooperate .four {

    width: 1424px;

    margin: 84px auto 0;

    display: flex;

    justify-content: space-between;

    border-top: 1px dashed #1c47fe;

    padding: 0;

}



.cooperate .four .item {

    width: 308px;

    text-align: center;

    padding-top: 75px;

    position: relative;

}



.cooperate .four .item .logo {

    width: 88px;

    position: absolute;

    top: -44px;

    left: calc(50% - 44px);

    transition: all 1s;

}

.cooperate .four .item .logo:hover {

    transform: rotateX(360deg);

}



.cooperate .four .item .arrow {

    position: absolute;

    top: 0;

    right: 0;

    transform: translateY(-50%);

}



.cooperate .four .item h6 {

    font-size: 24px;

    font-weight: bold;

    color: #3576ca;

    margin-bottom: 29px;

}



.cooperate .four .item p {

    font-size: 14px;

    color: #40436a;

}



.intellectual_property {

    padding: 85px 0 70px;

    background-color: #ddebff;

}



.intellectual_property .title {

    text-align: center;

}



.intellectual_property .title h3 {

    color: #00004c;

    font-size: 34px;

}



.intellectual_property .title p {

    font-size: 20px;

    color: #40436a;

}



.intellectual_property .content {

    padding: 0;

    width: 1435px;

    margin: 86px auto 0;

    display: flex;

    flex-wrap: wrap;

}



.intellectual_property .content .item1 {

    width: 854px;

    padding: 44px 36px 79px 33px;

    background-image: url('../img/intellectual_property/圆角矩形3.png');

    background-size: 100% 100%;

    background-repeat: no-repeat;

    color: #ffffff;

    margin-bottom: 20px;

    margin-right: 18px;

}



.intellectual_property .content .item1 h5 {

    font-size: 26px;

    font-weight: bold;

    margin-bottom: 42px;

}



.intellectual_property .content .item1 p {

    font-size: 16px;

}



.intellectual_property .content .item {

    padding-top: 22px;

    width: 272px;

    border-top: 6px solid #62a5fa;

    background-color: #ffffff;

    text-align: center;

    margin-bottom: 20px;

    margin-right: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;

}



.intellectual_property .content .item img {
    width: 100%;
	cursor: pointer;
}


.img-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 9999;
}

.img-enlarged {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
}


.intellectual_property .content .item p {

    font-size: 16px;

    color: #488ff8;

}



.intellectual_property .content .item:nth-of-type(5n+3) {

    margin-right: 0;

}