body {
    background-color: #f8f8f8;
}

.introduce {
    padding: 100px 0 110px;
    border-bottom: 1px solid #EEEEEE;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.introduce .pro_sw {
    width: 53%;
}

.introduce .pro_sw .small_img {
    position: relative;
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.introduce .pro_sw .mySwiper {
    width: 90%;
}

.introduce .pro_sw .mySwiper .swiper-slide-thumb-active {
    border: 3px solid #1F1F1F;
    box-sizing: border-box;
}

.introduce .pro_sw .small_img .swiper-button-next,
.introduce .pro_sw .small_img .swiper-button-prev {
    width: 42px !important;
    height: auto !important;
    background: #1F1F1F !important;
    position: unset !important;
    margin-top: 0 !important;
}

.swiper-button-next:after,
.swiper-button-prev:after {
    font-size: 22px !important;
    color: #fff !important;
}

.introduce .pro_sw .small_img .swiper-button-prev {
    margin-right: 20px;
}

.introduce .pro_sw .small_img .swiper-button-next {
    margin-left: 20px;
}

.introduce .pro_sw .small_img .swiper-button-next.swiper-button-disabled,
.introduce .pro_sw .small_img .swiper-button-prev.swiper-button-disabled {
    opacity: 1 !important;
    background: #E7E7E7 !important;

}

.introduce .pro_sw .small_img .swiper-button-next.swiper-button-disabled:after,
.introduce .pro_sw .small_img .swiper-button-prev.swiper-button-disabled:after {
    color: #1F1F1F !important;
}

.introduce .introduce_content {
    width: 40%;
}

.introduce .introduce_content .title {
    font-family: SourceHanSansCN-Regular;
    color: #000000;
    line-height: 1.2;
}

.introduce .introduce_content .desc {
    font-family: SourceHanSansCN-Regular;
    color: #666666;
    line-height: 30px;
    margin-top: 25px;
}

.introduce .introduce_content .parameter {
    margin-top: 60px;
    font-family: SourceHanSansCN-Regular;
    color: #1F1F1F;
    line-height: 32px;
}

.description {
    margin-top: 100px;
}

.description .title {
    font-family: SourceHanSansCN-Regular;
    color: #333333;
    margin-bottom: 40px;
}

.description .desc {
    font-family: SourceHanSansCN-Regular;
    color: #666666;
    line-height: 30px;
    margin-bottom: 130px;
}

.description .pages_long {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid #EEEEEE;
    border-bottom: 1px solid #EEEEEE;
}

.description .pages_long a:nth-child(1),
.description .pages_long a:nth-last-of-type(1) {
    width: 40%;
}

.description .pages_long .prev,
.description .pages_long .next {
    padding: 20px 30px;
    display: flex;
    align-items: center;
}

.description .pages_long .icon-z043 {
    padding-left: 18px;
    border-left: 1px solid #EEEEEE;
    color: #1F1F1F;
    font-weight: bold;
}

.description .pages_long .prev .icon-z043 {
    display: block;
    transform: rotate(180deg);
}

.description .pages_long .next {
    justify-content: flex-end;
    text-align: right;
}

.description .pages_long .next .icon-z043 {
    margin-left: 22px;
}

.description .pages_long .f18 {
    margin-left: 22px;
    font-family: SourceHanSansCN-Regular;
    color: #222222;
    line-height: 30px;
    text-transform: uppercase;
}

.description .pages_long a:hover .prev,
.description .pages_long a:hover .next {
    background: #000000;
    color: #fff;
}

.description .pages_long a:hover .icon-z043,
.description .pages_long a:hover .f18 {
    color: #fff;
}

.description .pages_long .goback {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.description .pages_long .goback .iconfont {
    font-size: 22px;
    color: #000;
    font-weight: bold;
}

.recommendation {
    padding: 120px 0 140px;
}

.recommendation .title {
    font-family: SourceHanSansCN-Regular;
    color: #000000;
    line-height: 30px;
    margin-bottom: 57px;
}

.recommendation .content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 67px;
}

.recommendation .content a .bottom {
    transition: all .36s;
    padding: 17px 0 28px;
}

.recommendation .content .img {
    overflow: hidden;
}

.recommendation .content .img img {
    transition: all .36s;
}

.recommendation .content .f20 {
    font-family: SourceHanSansCN-Regular;
    color: #1F1F1F;
    line-height: 26px;
    margin-bottom: 10px;
    width: fit-content;
    transition: all .36s;
    text-overflow: -o-ellipsis-lastline;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
}

.recommendation .content .desc {
    font-family: SourceHanSansCN-Regular;
    color: #7E7D7D;
    line-height: 21px;
}

.recommendation .content a:hover {
    box-shadow: 0px 15px 43px 0px rgba(0, 0, 0, 0.18);
    transition: all .36s;
}

.recommendation .content a:hover .img img {
    transform: scale(1.1);
    transition: all .36s;
}

.recommendation .content a:hover .bottom {
    padding: 17px 28px;
    box-sizing: border-box;
    background: #fff;
    transition: all .36s;
}

.recommendation .content a:hover .f20 {
    border-bottom: 1px solid #1F1F1F;
    transition: all .36s;
    margin-top: 0;
}

@media(max-width:1680px) {

    .introduce,
    .recommendation {
        padding: 100px 0;
    }

    .introduce .introduce_content .parameter {
        margin-top: 50px;
    }

    .description {
        margin-top: 90px;
    }

    .description .title {
        margin-bottom: 30px;
    }

    .description .desc {
        margin-bottom: 100px;
    }

    .recommendation .title {
        margin-bottom: 50px;
    }

    .recommendation .content {
        grid-gap: 60px;
    }
}

@media(max-width:1440px) {

    .introduce,
    .recommendation {
        padding: 80px 0;
    }

    .introduce .introduce_content .parameter {
        margin-top: 40px;
    }

    .introduce .introduce_content .desc {
        margin-top: 20px;
    }

    .description {
        margin-top: 80px;
    }

    .description .title {
        margin-bottom: 25px;
    }

    .description .desc {
        margin-bottom: 80px;
    }

    .recommendation .title {
        margin-bottom: 40px;
    }

    .recommendation .content {
        grid-gap: 50px;
    }
}

@media(max-width:1280px) {

    .introduce,
    .recommendation {
        padding: 60px 0;
    }

    .introduce .introduce_content .parameter {
        margin-top: 30px;
    }

    .introduce .introduce_content .desc {
        margin-top: 15px;
    }

    .description {
        margin-top: 60px;
    }

    .description .title {
        margin-bottom: 20px;
    }

    .description .desc {
        margin-bottom: 60px;
    }

    .recommendation .title {
        margin-bottom: 30px;
    }

    .recommendation .content {
        grid-gap: 40px;
    }
}

@media(max-width:1024px) {
    .introduce {
        padding: 40px 0;
        flex-direction: column;
    }

    .introduce .pro_sw {
        width: 100%;
    }

    .introduce .introduce_content {
        width: 100%;
        margin-top: 30px;
    }

    .introduce .introduce_content .parameter {
        margin-top: 20px;
    }

    .introduce .introduce_content .desc {
        margin-top: 10px;
    }

    .swiper-button-next:after,
    .swiper-button-prev:after {
        font-size: 18px !important;
    }

    .description {
        margin-top: 40px;
    }

    .description .title {
        margin-bottom: 15px;
    }

    .description .desc {
        margin-bottom: 40px;
    }

    .description .pages_long .f18 {
        display: none;
    }

    .description .pages_long .icon-z043 {
        border-left: none;
    }

    .description .pages_long a:hover .prev,
    .description .pages_long a:hover .next {
        background: none;
    }

    .description .pages_long a:hover .icon-z043,
    .description .pages_long a:hover .f18 {
        color: #1F1F1F;
    }

    .description .pages_long .prev,
    .description .pages_long .next {
        padding: 15px 20px;
    }

    .recommendation {
        padding: 40px 0;
    }

    .recommendation .title {
        margin-bottom: 20px;
    }

    .recommendation .content {
        grid-gap: 30px;
    }
}

@media(max-width:768px) {
    .introduce {
        padding: 30px 0 20px;
    }

    .description {
        margin-top: 20px;
    }

    .description .title {
        margin-bottom: 10px;
    }

    .description .desc {
        margin-bottom: 30px;
    }

    .recommendation {
        padding: 20px 0 30px;
    }

    .recommendation .content {
        grid-template-columns: repeat(1, 1fr);
    }

    .recommendation .content a {
        box-shadow: 0px 5px 30px 0px rgb(0 0 0 / 18%);
    }

    .recommendation .content a .bottom {
        padding: 17px 28px;
        box-sizing: border-box;
        background: #fff;
        transition: all .36s;
    }
}