.w {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.head {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99;
    background-color: #fff;
}

.head_fill {
    width: 100%;
    height: 90px;
}

.head_box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90px;
}

.head_logo {
    display: block;
    padding: 10px 0;
    width: auto;
    height: 100%;
    max-width: 5%;
    max-height: 100%;
    box-sizing: border-box;
}

.head_box_nav {
    display: flex;
    align-items: center;
}

.nav_item {
    position: relative;
}

.nav_item>a {
    display: block;
    padding: 15px 20px;
    font-size: 16px;
    font-weight: bold;
    text-transform: uppercase;
}

.tow_nav {
    display: none;
    position: absolute;
    z-index: 66;
    background-color: #fff;
    width: max-content;
}

.tow_nav_item a {
    display: block;
    font-size: 14px;
    padding: 5px;
}

.tow_nav_item a:hover, .nav_item>a:hover {
    color: #006b93;
}

.head_box_nav .nav_active {
    color: #006b93;
}

.nav_item:hover .tow_nav {
    display: block;
}

.banner {
    position: relative;
}

.banner .swiper-slide {
    max-height: 450px;
}

.banner_text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    text-transform: uppercase;
    z-index: 2;
}

.banner_text_h {
    font-size: 24px;
    font-weight: bold;
}

.banner_text_p {
    font-size: 18px;
}

.contact_us {
    margin-top: 20px;
    display: block;
    width: 150px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    font-weight: bold;
    color: #fff;
    background-color: #EA7404;
    border-radius: 5px;
    text-transform: uppercase;
}

.main {
    padding: 60px 0;
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.title {
    font-size: 24px;
    font-weight: 700;
    color: #006b93;
    text-align: center;
}

.subtitle {
    padding-top: 10px;
    font-size: 16px;
    text-align: center;
    color: #999;
}

.main_tow_list {
    margin: 20px auto;
    display: flex;
}

.main_tow_item {
    flex: 1;
    margin-right: 30px;
}

.main_tow_item:nth-child(3n) {
    margin-right: 0;
}

.main_tow_item_img {
    height: 230px;
}

.main_tow_item_tit {
    margin-top: 10px;
    font-size: 16px;
    line-height: 1.7;
}

.main_tow_item_tit:hover {
    color: #006b93;
}

.main_three_list {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
}

.main_three_item {
    width: calc(33.33% - 20px);
    margin-right: 30px;
    margin-bottom: 30px;
    text-align: center;
}

.main_three_item:nth-child(3n) {
    margin-right: 0;
}

.main_three_item_img {
    text-align: center;
}

.main_three_item_img img {
    width: unset;
    height: unset;
    max-width: 100%;
    min-height: 100%;
}

.main_three_item_title {
    margin-top: 10px;
    font-size: 16px;
    line-height: 1.7;
}

.main_three_item_p {
    font-size: 14px;
    color: #999;
    opacity: 0;
    transition: all .5s;
}

.main_three_item:hover .main_three_item_p {
    transition: all .5s;
    opacity: 1;
}

.foot {
    padding: 40px 0 80px;
    background-color: #333333;
}

.foot_box {
    display: flex;
    justify-content: space-between;
}

.foot_box_l {
    width: 30%;
}

.foot_logo a {
    display: block;
    max-width: 40%;
}

.foot_box_l_infr {
    margin-top: 30px;
    color: #999;
    font-size: 14px;
    line-height: 1.8;
}

.foot_box_r {
    margin-left: 40px;
    flex: 1;
    display: flex;
    justify-content: space-between;
}

.foot_box_r_item {
    flex: 1;
    margin: 0 15px;
    position: relative;
    max-width: 16.666%;
}

.tow_foot_nav_box {
    height: 60px;
    overflow: hidden;
}

.tow_foot_nav_more {
    color: #999;
    padding: 3px 10px;
    box-sizing: border-box;
    border: 1px solid #666;
    text-align: center;
    cursor: pointer;
}

.foot_box_r_item a {
    display: block;
    font-size: 16px;
    color: #fff;
    padding: 2px 0;
    /* border-bottom: 2px solid #006b93; */
    text-align: left;
}

.tow_foot_nav a {
    border-bottom: 0;
    font-size: 12px;
    color: #999;
    line-height: 16px;
    /* height: 18px; */
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.tow_foot_nav a:hover {
    color: #006b93;
}

.pc_hide {
    display: none;
}

.mb_hide {
    display: block;
}

.edition {
    position: relative;
}

.edition:hover .edition_list {
    display: block;
}

.edition_text {
    height: 30px;
    line-height: 30px;
    padding: 0 20px;
    font-size: 14px;
}

.edition_list {
    display: none;
    position: absolute;
    top: 30px;
    left: 50%;
    width: max-content;
    transform: translateX(-50%);
    background-color: #fff;
}

.edition_item a {
    display: block;
    padding: 5px 10px;
    font-size: 14px;
    color: #006b93;
}

@media screen and (max-width:768px) {
    .pc_hide {
        display: block;
    }

    .mb_hide {
        display: none;
    }

    .w {
        padding: 0 10px;
        box-sizing: border-box;
    }

    .flex_align_between {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .head_nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 60px;
        z-index: 99;
        padding: 10px;
        box-sizing: border-box;
        background-color: #333E50;
    }

    .head_nav_fill {
        width: 100%;
        height: 60px;
    }

    .mb_logo a {
        display: block;
        width: 40px;
        height: 40px;
    }

    .mb_menu {
        width: 40px;
        height: 40px;
    }

    .mb_nv_list {
        display: none;
        position: absolute;
        top: 60px;
        right: 0;
        left: 0;
        background-color: rgba(0, 0, 0, .9);
        padding: 20px;
        z-index: 99;
    }

    .mb_nv_list_item {
        border-bottom: 1px solid #eee;
    }

    .mb_nv_list_item a {
        display: block;
        width: 100%;
        height: 45px;
        line-height: 45px;
        font-family: SourceHanSansCN-Medium;
        font-size: 18px;
        letter-spacing: 0px;
        color: #ffffff;
        text-align: right;
    }

    .banner .swiper-slide {
        height: 200px;
    }

    .banner_text {
        display: none;
    }

    .main {
        padding: 20px 0;
        background-size: cover;
    }

    .main_tow_item_img {
        height: auto;
        height: 75px;
    }

    .main_tow_item {
        margin-right: 10px;
    }

    .foot {
        padding: 40px 0;
    }

    .foot_box {
        display: block;
    }

    .foot_logo a {
        margin: 0 auto;
    }

    .foot_box_l {
        width: 100%;
    }

    .foot_box_r {
        display: none;

        /* margin-top: 30px;
        margin-left: 0;
        flex-wrap: wrap; */
    }
}