.c_nav_options>li:nth-child(3) {
    background-color: rgb(29, 108, 191);
}

.c_nav_options>li:nth-child(3) a {
    font-weight: 700;
}

.top_img {
    position: relative;
    width: 100%;
    height: 5.2rem;
}

.top_img img,
.top_img_1 img {
    width: 100%;
    height: 100%;
}

.top_img_1 {
    position: absolute;
    top: 1.35rem;
    left: 2.85rem;
    width: 6.32rem;
    height: 2.25rem;
}

.introduce {
    padding-top: 0.48rem;
    width: 100%;
    background-color: #ebedf0;
    padding-bottom: .48rem;
}

.int_top {
    margin-bottom: 0.24rem;
    padding: 0.56rem 0.6rem;
    background-color: #fff;

}

.int_top h2 {
    margin-bottom: 0.48rem;
    font-size: 0.32rem;
    color: #3E3F40;
    line-height: 1;
    text-align: center;
}

.int_top h5 {
    margin-bottom: 0.24rem;
    padding-left: 0.08rem;
    width: 100%;
    height: 0.18rem;
    font-size: 0.18rem;
    color: #1D6CBF;
    border-left: 0.04rem solid #1D6CBF;
    line-height: 1;
}

.int_top_1 {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
}

.int_top_1 li {
    margin: 0 0rem 0.32rem 0;
    width: 50%;
    font-size: 0.16rem;
    color: #3E3F40;
    line-height: 1;
}

.int_top p {
    margin-top: -0.08rem;
    font-size: 0.16rem;
    line-height: 0.32rem;
    color: #3E3F40;
}

.int_center {
    margin-bottom: 0.24rem;
    padding: 0.32rem 0.6rem;
    background-color: #fff;
}

.int_center img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.double {
    /* width: 100%; */
    height: 0.9rem;
}

.double li {
    float: left;
    width: 5rem;
    height: 100%;
    font-size: 0;
}

.double li:nth-child(2) {
    width: 3.2rem;
    border-left: 0.01rem solid rgb(225, 227, 230);
    border-right: 0.01rem solid rgb(225, 227, 230);
}

.double li a {
    position: relative;
    float: left;
    width: 100%;
    height: 100%;
    font-size: 0.16rem;
    color: rgb(62, 63, 64);
    background-color: rgb(255, 255, 255);
    line-height: 0.9rem;
}

.double li:nth-child(3) a {
    text-align: right;
}

.double li a span {
    float: left;
    width: 0.22rem;
    height: 0.2rem;
    opacity: 1;
}

.double li a span img {
    width: 100%;
    height: 100%;
}

.double li:nth-child(1) a span {
    margin: 0.00rem 0.17rem 0 0.71rem;
}

.double li:nth-child(2) a span {
    margin: 0.00rem 0.198rem 0 1.09rem;
    height: 0.22rem;
}

.double li:nth-child(3) a span {
    float: right;
    margin: 0.00rem 0.71rem 0 0.17rem;
}

.double_text {
    display: inline-block;
    width: 3.5rem;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.double li a:hover {
    color: rgb(255, 255, 255);
    background-color: rgb(29, 108, 191);
}

.double_dis {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.double_dis span {
    background-color: rgb(29, 108, 191);
}

.double li a:hover .double_dis {
    display: block;
}

.double li a:hover .double_1 {
    opacity: 0;
}
.int_center{
    display: flex;
    justify-content: space-between;
}
.int_center .case-swiper{
    width: 9rem;
    height: 5.72rem;
}
.int_center .case-thumbs-swiper{
    width: 2.8rem;
    height: 5.72rem;
}

.int_center .swiper-button-next:after, .int_center .swiper-button-prev:after {
    content: '';
}
.int_center .navigation{
    opacity: 0;
    transition-duration: .3s;
    width: .48rem;
    height: .48rem;
    background: rgba(255,255,255,.5);
    border-radius: 50%;
}
.int_center .navigation:hover{
    background: #1d6cbf;
}
.int_center .navigation img{
    position: absolute;
    width: .14rem;
    height: .24rem;
    display: block;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.case-swiper:hover .navigation-s{
    opacity: 1;
}
.case-thumbs-swiper .navigation-t{
    left: 50%;
    top: 10px;
    transform: translateX(-50%) rotate(90deg);
    margin: 0;
}
.case-thumbs-swiper .navigation-t-next{
    left: 50%;
    top: unset;
    bottom: 10px;
    transform: translateX(-50%) rotate(90deg);
}
.case-thumbs-swiper .swiper-slide{
    transition-duration: .3s;
}
.case-thumbs-swiper .swiper-slide-thumb-active{
    border: 6px solid #1D6CBF;
    filter: brightness(.5);
}
.case-thumbs-swiper:hover .navigation-t{
    opacity: 1;
}