* {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 12px;
}

a {
    outline: 0;
    color: #666;
    -webkit-touch-callout: none;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none
}

a, a:hover {
    text-decoration: none
}

li, ol, ul {
    list-style-type: none
}

.f13 {
    font-size: 13px;
}

.f20 {
    font-size: 20px;
}

html, body, .app {
    width: 100%;
}

.main {
    width: 100%;
    text-align: center;
}

.full_width {
    width: 1310px;
}

.logo {
    position: absolute;
    left: 34px;
    top: 30px;
    width: 184px;
    height: 98px;
}

.logo img {
    width: 100%;
    height: 100%;
}


.top-nav {
    font-size: 24px;
    position: absolute;
    top: 90px;
    left: 340px;
    font-weight: bold;
}

.top-nav-lang {
    top: 24px;
    right: 0;
    cursor: pointer;
    z-index: 1;
    position: absolute;
}

.top-nav-lang .lang-at {
    padding: 10px 20px;
    border-color: transparent;
    border-style: solid;
    border-width: 1px 1px 0 1px;
    border-radius: 5px 5px 0 0;
}

.top-nav-lang .lang-at .iconfont {
    margin-left: 5px;
    font-size: 11px;
}

.top-nav-lang .lang-list {
    display: none;
    z-index: 1;
    padding-bottom: 10px;
    border-color: transparent;
    border-style: solid;
    border-width: 0 1px 1px 1px;
    border-radius: 0 0 5px 5px;
    background-color: #fff;
}

.top-nav-lang .lang-list li a {
    line-height: 30px;
    width: 100%;
    display: inline-block;
    cursor: pointer;
    text-align: left;
    text-indent: 2em;
}

.top-nav-lang:hover .lang-at {
    border-color: #ccc;
}

.top-nav-lang:hover .lang-list {
    display: block;
    border-color: #ccc;
}

.top-nav-lang a:hover {
    background-color: #f5f5f5;
}

.top-nav ul li {
    float: left;
    margin-left: 25px;
    margin-right: 25px;
}

.top-nav ul li a {
    font-size: 20px;
}

.banner-title {
    position: absolute;
    top: 30%;
    left: 30%;
    vertical-align: middle;
    font-size: 36px;
    display: inline-block;
    color: #fff;
}

.nav-left {
    width: 230px;
    padding-left: 40px;
    background-color: #a2a1a1;
    height: 100%;
    box-sizing: border-box;
    padding-top: 14px;
    float: left;
}

.nav-left ul {
    display: flex;
    flex-direction: column;
}

.nav-left ul li a {
    display: inline-block;
    height: 50px;
    line-height: 40px;
    width: 100%;
    font-size: 20px;
    color: #fff;
    text-align: left;
}

.nav-left ul li a .iconfont {
    margin-right: 10px;
}


.carousel {
    float: right;
    height: 100%;
    width: 1080px;
}

.t1 {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    margin-top: 30px;
    justify-content: space-between;
}

.t1 li {
    width: 210px;
    height: 216px;
    margin-bottom: 10px;
    overflow: hidden;
}

.t1 li:hover img {
    transform: scale(1.1);
}


.t1 li img {
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
}

.t2 {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    margin-top: 30px;
    justify-content: space-between;
}

.t2 li {
    width: 219px;
    height: 100px;
    border: 1px solid #bfbfbf;
    box-sizing: border-box;
    text-align: center;
    margin-left: -1px;
    margin-top: -1px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.t2 li img {
    max-height: 70%;
    max-width: 90%;
    object-fit: fill; /* 或者使用 contain, fill, none, scale-down */
}


.about-us-title {
    font-size: 26px;
    font-weight: 600;
}

.core-values {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.core-values li {
    width: 40%;
    margin-bottom: 20px;
}

.core-values li h2 {
    font-weight: 600;
    font-size: 18px;
    line-height: 2em;
}

.core-values li .text {
    text-align: left;
    box-sizing: border-box;
    padding-left: 28px;
}

.core-values li .iconfont {
    margin-right: 10px;
    color: #2563eb;
    font-size: 16px;
}


.footer {
    margin-top: 74px;
    width: 100%;
    height: 250px;
    margin-bottom: 40px;
    background-color: #d9d9dc;
}

.footer-content {
    width: 1310px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    background-color: #d9d9dc;
}

.footer-content .title {
    font-size: 24px;
    font-weight: normal;
    color: #020202;
    padding-bottom: 20px;
    text-align: left;
}

.contact-box {
    line-height: 24px;
    text-align: left;
    width: 50%;
    float: left;
    box-sizing: border-box;
    padding: 30px;
}

.feedback-box {
    background-color: #c5c5c6;
    width: 100px;
    height: 100%;
    flex-grow: 0;
    box-sizing: border-box;
    padding: 30px;
}

.top-box {
    height: 428px;
    width: 100%;
    text-align: center;
    background-color: #054798
}

.share-box {
    float: right;
    width: 50%;
    box-sizing: border-box;
    text-align: center;
    padding: 30px;
}

.share-box ul {
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
}

.banner-box {
    height: 340px;
    width: 100%;
    text-align: center;
    position: relative
}

.share-box ul li {
    background-color: #535252;
    padding: 5px;
    width: 40px;
    height: 40px;
    margin: 10px 10px 10px 0;
    border-radius: 5px;
    cursor: pointer;
}

.share-box ul li .iconfont {
    color: #fff;
    line-height: 40px;
    font-size: 30px;
}

.share-box ul li:hover .iconfont {
    color: #ccc;
}

.mobile-menu-active {
    transform: translateX(0);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 80%; /* 小屏幕菜单宽度占80% */
    height: 100dvh;
    color: white;
    transform: translateX(-100%);
    transition: transform 0.3s ease; /* 滑动过渡动画 */
    z-index: 99;
    background-color: #054899;
}

.mobile-menu .content {
    position: relative;
    padding: 30px 20px 20px 20px;
    font-size: 22px;
}

.mobile-menu .content a {
    font-size: 18px;
    color: #fff;
}

.mobile-menu .content .close-button {
    position: absolute;
    top: 30px;
    right: 30px;
}

.mobile-menu .content .close-button .iconfont {
    font-size: 20px;
}

.header-box {
    margin: 0 auto;
    height: 146px;
    width: 1310px;
    position: relative
}

.index-content {
    width: 1310px;
    margin: 0 auto;
}

.m-header-button {
    display: none;
}

.top-box-content {
    width: 1310px;
    margin: 0 auto;
    height: 100%;
}

.about-box-left {
    float: left;
    width: 40%;
}

.about-box-right {
    float: right;
    width: 60%;
    text-align: left;
    box-sizing: border-box;
    padding-right: 10%;
    padding-left: 30px;
}

.about-box-right h1 {
    line-height: 80px;
    font-size: 26px;
}

.about-box-right p {
    font-size: 14px;
    line-height: 2em;
}

@media screen and (max-width: 720px) {
    .nav-left, .top-nav-lang, .top-nav {
        display: none;
    }

    .about-box-right h1 {
        font-size: 26px;
    }

    .about-box-right p {
        font-size: 16px;
    }

    .mobile-menu {
        display: block;
    }

    .logo {
        right: 0;
        top:10px;
        left: unset;
    }

    .logo {
           height: 80px;
    }

        .logo img{
           width: 80%;
            height: 80%;
    }


    .header-box {
        width: 100%;
        height: 80px;
    }

    .top-box {
        height: auto;
    }

    .about-box-right, .about-box-left {
        width: unset;
    }

    .top-box-content {
        width: 100%;
    }

    .index-content {
        width: 100%;
    }

    .carousel {
        width: 100%;
    }

    .t1 li {
        width: 49.5%;
        height: auto;
    }

    .full_width {
        width: 100%;
    }

    .footer-content {
        width: 100%;
    }

    .t2 li {
        width: 33%;
        min-height: 60px;
    }

    .mobile-menu .m-lang-list ul {
        padding: 20px 0;
        display: flex;
        flex-wrap: nowrap;
        flex-direction: row;
    }

    .mobile-menu .m-lang-list ul li {
        width: 33%;
    }

    .mobile-menu .m-lang-list ul li a {
        text-align: left;
    }

    .m-top-nav-list ul {
        padding: 20px 0;
        display: flex;
        flex-wrap: wrap;
    }

    .m-category-list ul {
        padding: 20px 0;
        display: flex;
        flex-wrap: wrap;
    }

    .m-top-nav-list ul li {
        width: 50%;
    }

    .m-top-nav-list ul li a {
        line-height: 40px;
    }

    .m-category-list ul li a .iconfont {
        margin-right: 10px;
    }

    .m-category-list ul li {
        width: 50%;
    }

    .m-category-list ul li a {
        line-height: 40px;
    }

    .mobile-menu .m-menu-title {
        border-bottom: 1px solid #ccc;
        font-size: 22px;
        line-height: 1.5em;
        font-weight: 600;
    }


    .m-lang-list {

    }

    .carousel img {
        width: 100%;
    }
.footer-content {
    flex-direction: column;
}
    .core-values li .text {
        font-size: 16px;
    }

    .contact-box, .share-box {
        width: 100%;
    }
    .m-header-button {
        display: block;
        width: 80px;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        padding-top: 15px;
        box-sizing: border-box;
        background-color: #054899;
    }

    .mobile-menu-active {
        transform: translateX(0);
    }

    .m-header-button .iconfont {
        font-size: 50px;
        color: #fff;
        text-align: center;
    }

    .banner-box {
        height: auto;
    }
}