@media (max-width: 1920px) {
    .indexA {
        overflow: hidden;
    }
}
@media (max-width: 1699px) {
    .indexA-list{
        margin-top: 3rem;
    }
}
@media (max-width: 1580px) {
    * {
        font-size: 14px;
    }

    .navbar-nav .nav-item {
        margin: 0 1.7rem;
    }
}

/* 小于xxl */
@media (max-width: 1399px) {
    * {
        font-size: 12px;
    }
}

/* 小于xl */
@media (max-width: 1199px) {
    * {
        font-size: 10px;
    }
    .indexA_video .img-content::after{
        transform: translate(-50%, -50%);
        visibility: visible;
        opacity: 1;
    }
}

/* 小于lg */
@media (max-width: 991px) {
    .header-list .text-end {
        margin-left: 0;
    }

    .navbar-brand {
        font-size: 4rem;
    }

    .navbar-light .navbar-brand {
        display: flex;
    }

    .navbar-light .navbar-brand img {
        height: 5em;
    }

    .navbar-light .navbar-brand h1 {
        font-size: 2.4rem;
    }

    .footer {
        height: 54px;
        overflow: hidden;
    }

    .indexB-text .twinkleBtn {
        margin-top: 4rem;
    }

    .banner .swiper-container .swiper-xia {
        display: none;
    }

    .indexB-tab {
        display: none;
    }

    .indexB-text .twinkleBtn {
        display: none;
    }

    .indexA-L {
        padding: 1.5em;
    }

    .indexA-R p {
        line-height: 2;
    }

    .indexA-list .text h6 {
        font-size: 16px;
    }

    .indexA-list .text h5 {
        font-size: 18px;
    }

    .indexB-text p {
        font-size: 16px;
        line-height: 2;
    }

    .dropdown ul li a {
        font-size: 14px;
    }

    .banner-nei-bg {
        background: center top no-repeat;
        background-size: cover;
    }

    #map {
        height: 15rem !important;
    }

    .page-contact-text .c .img-content {
        width: 90%;
        max-width: 120px;
    }

    .page-product-tab a {
        flex: auto;
    }

    .page-news-title-btn {
        flex-direction: column;
        align-items: stretch;
    }

    .page-news-title-btn .fh {
        margin: 25px 0;
    }

    .news-list-page a {
        flex-direction: column;
        padding: 0;
        border: 0;
    }

    .news-list-page .img {
        width: 100%;
    }

    .news-list-page .rq {
        width: 100%;
        text-align: center;
        height: auto;
        padding: 20px;
        display: flex;
        justify-content: center;
        align-items: center;
        display: none;
    }

    .news-list-page .rq .y,
    .news-list-page .rq .d {
        font-size: 20px;
        margin: 0 5px;
    }

    .news-list-page .img-content {
        width: 100%;
    }

    .news-list-page .txt {
        margin: 1.3rem 0;
        width: 100%;
        padding: 0 1.3rem;
    }

    .news-list-page .txt h2 {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: 24px;
    }

    .news-list-page .txt p {
        margin: 10px 0;
    }

    .news-list-page .txt span {
        opacity: 1;
        margin: 0;
        width: 100%;
        text-align: right;
    }

    .news-list-page .txt span s {
        display: inline-block;
        float: left;
    }

    .longtian {
        margin-bottom: 3rem;
    }
}

/* 小于md */
@media (max-width:767px) {
    .page-about-a .indexA-list {
        justify-content: flex-start;
        padding-left: 5rem;
        margin-top: 3rem;
    }
}

/* 手机 */
@media (max-width: 576px) {
    * {
        font-size: 12px;
    }

    .banner .swiper-container .swiper-button-prev,
    .banner .swiper-container .swiper-button-next {
        display: none;
    }

    .navbar-light .navbar-brand img {
        height: 3em;
    }

    .navbar-light .navbar-brand h1 {
        font-size: 1.5rem;
    }

    .indexA-R {
        padding: 2.5rem 1.5rem;
    }

    .indexB-list .img-content {
        height: 35rem;
    }

    .indexB-text {
        padding: 2rem 1rem;
        text-align: left;
    }

    .indexB-text h1 {
        font-size: 2.5rem;
    }

    .indexB-text h1::before {
        margin-right: 2em;
        display: inline-block;
        transform: scale(0.5);
    }

    .indexB-text .twinkleBtn {
        display: block;
        color: var(--css-color);
    }

    .indexB-text .twinkleBtn s {
        width: 100%;
        left: 0;
        right: auto;
    }

    .indexC {
        display: none;
    }

    .indexD-list {
        margin-bottom: 2rem;
    }

    .banner-nei-bg {
        height: 30rem;
    }

    .banner-nei-text {
        padding: 0 3rem;
    }

    .page-contact-text {
        width: 100%;
    }

    .page-product-list .text {
        padding: 1rem;
    }

    .page-product-title h3 {
        font-size: 16px;
    }

    .page-product-list .text h5 {
        -webkit-line-clamp: 2;
    }
    .page-product-title h2{
        font-size: 24px;
        line-height: 1;
        padding: 0 0 6px;
    }
    .page-about-text{
        padding: 3rem 0 0;
        margin:0 2rem;
    }
    .page-about-b-l{
        flex: 50%;
    }
}