/* 全局重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        list-style: none;
    }

    a {
        text-decoration: none;
        color: #333;
    }

    body {
        font-family: "Microsoft YaHei", Arial, sans-serif;
        background: linear-gradient(to top, #c2dfff, #ffffff) no-repeat bottom / 100% 1100px #ffffff;
    }

    /* swiper公用 */
    .swiper {
        width: 100%;
        height: 100%;
        overflow: hidden;
    }

    .swiper-slide {
        text-align: center;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .swiper-slide img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .swiper {
        margin-left: auto;
        margin-right: auto;
    }

    /* Header整体容器 */
    .header {
        width: 100%;
        background-color: #ecf4ff;
        background-image: url(../images/0backgroun.png);
        background-position-y: 170px;
    }
    .header_mobile {
            display:none;
        }

    /* 顶部区域（标题+搜索） */
    .top {
        height: 150px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1400px;
        /* 内容区最大宽度 */
        margin: 0 auto;
        /* 居中 */
        padding: 20px 0;
        /* 上下内边距 */

    }

    /* 标题样式 */
    .top_title h1 {
        color: #194a92;
        /* 深蓝色文字 */
        font-size: 52px;
        /* 大标题字号 */
        font-weight: bold;
    }

    /* 搜索框样式 */
    search {
        position: relative;
        width: 300px;
        /* 搜索框宽度 */
    }

    search input[type="text"] {
        width: 100%;
        height: 40px;
        padding: 0 40px 0 15px;
        /* 右侧留空间给搜索按钮 */
        border: 1px solid #d0d7de;
        /* 浅灰边框 */
        border-radius: 20px;
        /* 圆角 */
        outline: none;
        font-size: 14px;
        color: #666;
    }

    search bottom {
        position: absolute;
        right: 1px;
        top: 50%;
        transform: translateY(-50%);
        width: 55px;
        height: 40px;
        background-color: #194a92;
        /* 深蓝背景 */
        border: none;
        border-radius: 50px;
        /* 圆形按钮 */
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* 搜索图标（用伪元素模拟放大镜） */
    search bottom::before {
        content: "";
        display: block;
        width: 12px;
        height: 12px;
        border: 2px solid #fff;
        border-radius: 50%;
        position: relative;
    }

    search bottom::after {
        content: "";
        display: block;
        width: 6px;
        height: 2px;
        background-color: #fff;
        position: absolute;
        bottom: 13px;
        right: 16px;
        transform: rotate(45deg);
    }


    /* 导航栏样式 */
    nav {
        background-color: #194a92;
        /* 保持原有深蓝背景 */
        width: 100%;
        position: relative;
        z-index: 1000;
        font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        /* 增加底部投影，增加立体感 */
    }

    .nav_ul1 {
        display: flex;
        max-width: 1465px;
        margin: 0 auto;
        list-style: none;
    }

    .nav_li {
        flex: 1;
        text-align: center;
        position: relative;
        /* 关键定位基准 */
    }

    /* 一级菜单链接样式优化 */
    .nav_li>a {
        height: 78px;
        display: flex;
        justify-content: center;
        align-items: center;
        color: #fff;
        text-decoration: none;
        font-size: 20px;
        /* 稍微调小字号显得更精致 */
        font-weight: 500;
        letter-spacing: 1px;
        transition: all 0.3s ease;
        position: relative;
    }

    /* 一级菜单 Hover 效果：底部高亮条，而非全背景变色，更显现代 */
    
    .nav_li>a:hover,
    .nav_li.active>a {
        background-color: rgba(255, 255, 255, 0.1);
        /* 极淡的白色遮罩 */
        color: #fff;
        font-weight: bold;
    }

    
    .nav_li>a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 3px;
        background-color: #4facfe;
        /* 亮蓝色装饰条 */
        transition: width 0.3s ease;
    }

    .nav_li.on > a::after,
    .nav_li>a:hover::after {
        width: 60%;
        /* Hover 时装饰条展开 */
    }
     .nav_li.on > a{
        font-weight: bold;
     }

    /* --- 下拉菜单核心样式 (Modern Style) --- */
    .sub-menu {
        position: absolute;
        top: 100%;
        /* 紧贴父级底部 */
        left: 50%;
        transform: translateX(-50%) translateY(10px);
        /* 初始位置向下偏移，准备上浮动画 */
        width: 180px;
        /* 固定宽度，比父级稍宽 */
        background: #ffffff;
        border-radius: 0 0 4px 4px;
        /* 底部圆角 */
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        /* 柔和的深层阴影 */
        padding: 10px 0;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        /* 贝塞尔曲线让动画更自然 */
        list-style: none;
        z-index: 999;
    }

    /* 下拉菜单项样式 */
    .sub-menu li a {
        display: block;
        padding: 12px 20px;
        color: #333;
        /* 深灰文字，保证在白底上的可读性 */
        text-decoration: none;
        font-size: 16px;
        transition: all 0.2s;
        white-space: nowrap;
    }

    /* 下拉菜单 Hover 效果 */
    .sub-menu li a:hover {
        background-color: #f5f9ff;
        /* 极淡的蓝色背景 */
        color: #194a92;
        
        /* 左侧出现品牌色竖条 */
        padding-left: 25px;
        /* 文字轻微右移，增加动态感 */
    }
    .sub-menu li.on a{
        color: #194a92;
        background-color: #f5f9ff;
    }

    /* 触发显示：鼠标悬停在 nav_li 上时显示 sub-menu */
    .nav_li:hover .sub-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
        /* 上浮归位 */
    }

    /* 可选：给下拉菜单顶部加一个小三角指示器 */
    .sub-menu::before {
        content: '';
        position: absolute;
        top: -6px;
        left: 50%;
        transform: translateX(-50%);
        border-width: 0 6px 6px 6px;
        border-style: solid;
        border-color: transparent transparent #ffffff transparent;
    }

    /* =========================================== */
   

    /* ================列表公共=============== */
    /* --- 容器基础样式 --- */
    .main-list {
        width: 100%;
        max-width: 800px;
        font-family: "Microsoft YaHei", sans-serif;
        box-sizing: border-box;
    }

    /* --- 标题部分 --- */
    .main-list-title {
        display: flex;
        justify-content: space-between;
        /* 左右两端对齐 */
        align-items: center;
        border-bottom: 2px solid #b6d7ff;
        /* 灰色分割线 */

        margin-bottom: 25px;
    }

    .main-list-title-con {
        top: 1px;
        position: relative;
        padding-bottom: 10px;
        display: flex;
        align-items: center;
        gap: 20px;
        border-bottom: 4px solid #194a92;
    }

    .title-icon {
        width: 4px;
        height: 18px;
        margin-right: 10px;
    }

    .main-list-title h2 {
        margin: 0;
        font-size: 26px;
        color: #194a92;
        /* 标题深蓝 */
        font-weight: bold;
    }

    .more-link {
        font-size: 16px;
        color: #888888;
        text-decoration: none;
    }
    .more-link:hover{
        color: #194a92;
    }

    /* --- 列表部分 --- */
    .news-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .news-list li {
        margin-bottom: 36px;
    }

    .news-list li:last-child {
        margin-bottom: 0;
    }

    .news-list a {
        display: flex;
        /* 关键：开启Flex布局 */
        align-items: center;
        /* 垂直居中 */
        text-decoration: none;
        color: #333;
        font-size: 18px;
    }

    .news-list a:hover .text {
        color: #2b5ea7;
        /* 悬停变色 */
    }

    /* --- 菱形小图标 (CSS绘制) --- */
    .dot {
        display: inline-block;
        width: 6px;
        height: 6px;
        background-color: #aaccff;
        /* 浅蓝色菱形 */
        transform: rotate(45deg);
        /* 旋转成正方形即菱形 */
        margin-right: 12px;
        flex-shrink: 0;
        /* 防止图标被压缩 */
    }

    /* --- 文字内容 (核心：省略号处理) --- */
    .text {
        flex: 1;
        /* 占据剩余空间 */
        white-space: nowrap;
        /* 不换行 */
        overflow: hidden;
        /* 溢出隐藏 */
        text-overflow: ellipsis;
        /* 显示省略号 */
        margin: 0;
        padding-right: 15px;
        /* 与日期保持一点距离 */
    }

    /* --- 日期部分 --- */
    .date {
        color: #999;
        font-size: 16px;
        flex-shrink: 0;
        /* 防止日期被挤压换行 */
        font-family: Arial, sans-serif;
    }

    /* ================列表公共=============== */



    


    /* 底部 */
    .footer {
        height: 250px;
        background-color: #194a92;
        width: 100%;
        padding-top: 40px;
    }

    .footer1 {
        max-width: 1400px;
        margin: 0 auto;
    }

    .footer1 {
        display: flex;
        justify-content: center;
        /* 整体居中 */
        align-items: flex-start;
        gap: 60px;
        /* 关键：设置盒子之间的间距为 65px */
        color: #fff;
        padding-bottom: 30px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        /* 可选：添加一条淡淡的分割线 */
    }

    /* 单个栏目盒子 */
    .col-item {
        width: 305px;
        height: 45px;
        background-color: rgba(255, 255, 255, 0.1);
        /* 半透明背景，更有质感 */
        border-radius: 4px;
        display: flex;
        justify-content: center;
        gap: 10px;
        align-items: center;
        padding: 0 20px;
        cursor: pointer;
        position: relative;
        /* 关键：作为下拉菜单的定位基准 */
        transition: all 0.3s ease;
        user-select: none;
    }

    /* 鼠标悬停在按钮上时 */
    .col-item:hover {
        background-color: rgba(255, 255, 255, 0.2);
    }

    .col-item span:first-child {
        font-size: 16px;
        letter-spacing: 1px;
    }

    .arrow {
        font-size: 12px;
        opacity: 0.7;
        transition: transform 0.3s;
    }

    /* 激活状态下箭头旋转 */
    .col-item.active .arrow {
        transform: rotate(180deg);
    }

    /* --- 下拉菜单样式 (核心部分) --- */
    .dropdown-menu {
        overflow: auto !important;
        height: auto;
        max-height: 440px;
        position: absolute;
        bottom: 55px;
        /* 在按钮上方显示 */
        left: 0;
        width: 100%;
        background-color: #ffffff;
        color: #333;
        border-radius: 6px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        /* 阴影增加立体感 */
        overflow: hidden;

        /* 初始状态：隐藏且向下偏移 */
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
        /* 贝塞尔曲线让动画更自然 */
        z-index: 100;
    }

    /* 下拉列表项 */
    .dropdown-menu a {
        display: block;
        padding: 12px 20px;
        text-decoration: none;
        color: #555;
        font-size: 14px;
        border-bottom: 1px solid #f0f0f0;
        transition: background 0.2s;
    }

    .dropdown-menu a:last-child {
        border-bottom: none;
    }

    .dropdown-menu a:hover {
        background-color: #f5faff;
        /* 浅蓝背景高亮 */
        color: #1d4e89;
        /* 文字变蓝 */
        padding-left: 25px;
        /* 微小的位移动效 */
    }

    /* --- 激活状态：显示菜单 --- */
    .col-item.active .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    /* 底部装饰小三角 (可选) */
    .dropdown-menu::after {
        content: '';
        position: absolute;
        bottom: -6px;
        left: 50%;
        transform: translateX(-50%) rotate(45deg);
        width: 12px;
        height: 12px;
        background-color: #fff;
        box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.05);
        /* 仅保留右下阴影模拟连接感 */
        z-index: -1;
        /* 放在菜单后面一点，避免遮挡边框 */
    }

    /* 文字样式 */
    .col-item span {
        font-size: 16px;
        letter-spacing: 1px;
    }

    /* 模拟下拉小三角 */
    .arrow {
        font-size: 12px;
        opacity: 0.8;
    }

    /* 下半部分：版权信息区域 */
    .footer2 {
        display: flex;
        justify-content: space-between;
        /* 左右两栏分开 */
        max-width: 1400px;
        /* 限制最大宽度，使其与上方内容大致对齐 */
        margin: 0 auto;
        /* 居中 */
        padding: 40px 0;
        font-size: 15px;
        color: #ffffff;
        /* 浅灰色文字 */
        line-height: 1.8;
    }

    .footer_mobile {
        display: none;
    }

     /* 响应式适配（手机端≤750px） */
    @media (max-width: 750px) {

        header {
            display: none;
        }

        .header_mobile {
            display: block;
        }

        .top_mobile {
            width: 100%;
            height: 20vw;
            padding: 5.33333vw 2vw;
            background-color: #194a92;
            
            
        }

        .top_mobile h2 {
            font-size: 6.4vw;
            font-weight: bold;
            color: #fff;
        }

        /* ====== */
/* --- 顶部栏 --- */
.top_mobile {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #004ea2;
    color: #fff;
    padding: 0 15px;
    height: 60px;
    position: relative;
    z-index: 1000;
}

.top_mobile h2 {
    font-size: 18px;
    font-weight: bold;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* --- 汉堡按钮 --- */
.menu_btn {
    width: 30px;
    height: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 0;
}

.menu_btn span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #fff;
    border-radius: 2px;
    transition: all 0.3s ease-in-out;
}

.menu_btn.active span:nth-child(1) {
    transform: translateY(10.5px) rotate(45deg);
}
.menu_btn.active span:nth-child(2) {
    opacity: 0;
}
.menu_btn.active span:nth-child(3) {
    transform: translateY(-10.5px) rotate(-45deg);
}

/* --- 导航容器 --- */
#mobileNavContainer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: #ffffff;
    box-shadow: -2px 0 15px rgba(0,0,0,0.15);
    transition: right 0.3s ease-in-out;
    z-index: 999;
    overflow-y: auto;
    padding-top: 70px;
}

#mobileNavContainer.show {
    right: 0;
}

/* --- 一级菜单 --- */
.nav_ul1 {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.nav_li {
    border-bottom: 1px solid #e1dddd;
}

.nav_li a.nav-link {
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    background-color: #fff;
    transition: background-color 0.2s;
}

/* --- 【新增/修改】蓝条样式控制 --- */
.nav_li a.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;       /* 位于底部 */
    left: 50%;       /* 居中开始 */
    transform: translateX(-50%); /* 修正居中偏移 */
    width: 100%;     /* 蓝条宽度 */
    height: 3px;     /* 蓝条高度 */
    background-color: #338dec; /* 蓝条颜色 */
    
    /* 关键修改：默认隐藏 */
    opacity: 0; 
    visibility: hidden;
    transition: all 0.3s ease; /* 添加过渡效果，让出现更自然 */
}

/* --- 【关键逻辑】只有当 li 拥有 expanded 类时，才显示蓝条 --- */
.nav_li.expanded > a.nav-link::after {
    opacity: 1;
    visibility: visible;
}

/* 箭头图标 */
.nav_li .arrow {
    font-size: 12px;
    color: #999;
    transition: transform 0.3s ease;
}

.nav_li.expanded .arrow {
    transform: rotate(180deg);
}

/* --- 二级菜单：手风琴效果（等宽版） --- */
.sub-menu {
    width: 100%;
    list-style: none;
    padding: 0;          /* 移除左右内边距 */
    margin: 0;           /* 移除左右外边距 */
    background-color: #ecf5ff;
    border-radius: 0 0 8px 8px; /* 仅保留底部圆角，与一级菜单无缝衔接 */
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav_li.expanded .sub-menu {
    /* padding: 12px 0;     */
    box-sizing: content-box;
}
.sub-menu li{
    border-bottom: 1px solid #fff;
}
.sub-menu li a {
    display: block;
    padding: 12px 20px;  /* 与一级菜单保持一致的左右内边距 */
    color: #555;
    text-decoration: none;
    font-size: 15px;
    border-radius: 6px;
    transition: all 0.2s ease;
    line-height: 1.5;
    margin: 0 12px;      /* 用margin控制点击热区宽度，而非padding */
}

.sub-menu li:last-child a {
    margin-bottom: 0;
}
        /* ======== */
        search {
            width: 100%;
        }

        search bottom {
            top: 9.9vw;
            right: 2.3vw;
        }

        .search-box-mobile {
            padding: 4.93333vw 2vw;
            width: 100%;
            height: 18.66667vw;
        }

        .main1_top_mobile {
            width: 100%;
            height: 15.33333vw;
            background-color: #eff6ff;
            margin-bottom: 4.66667vw;
        }

        .main1_top_mobile a {
            font-size: 3.73333vw;
            font-weight: bold;
            color: #194a92;
        }

        /* 1. 容器定位与布局 */
        .m1-mobile-pagination {
            position: absolute;
            bottom: 10px !important;
            /* 距离底部的距离，可根据需要调整 */
            left: 50% !important;
            transform: translateX(-50%);
            /* 绝对居中 */
            width: auto !important;
            /* 宽度自适应内容 */
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            /* 短线之间的间距 */
            z-index: 10;
        }

        /* 2. 默认状态（未激活的短线） */
        .m1-mobile-pagination .swiper-pagination-bullet {
            width: 14px;
            height: 3px;
            background: #d6d6d6;
            border-radius: 2px;
            /* 轻微圆角 */
            opacity: 1;
            /* 保持不透明，使用背景色控制深浅 */
            margin: 0 !important;
            /* 清除Swiper默认的margin，使用gap控制间距 */
            transition: all 0.3s ease;
            /* 添加平滑过渡动画 */
            cursor: pointer;
        }

        /* 3. 激活状态（当前的长线） */
        .m1-mobile-pagination .swiper-pagination-bullet-active {
            width: 24px;
            /* 激活时变长 */
            background: #74aaf9 !important;
            /* 蓝色背景 */
        }



        /* 底部 */
        footer {
            display: none;
        }

        .footer_mobile {
            display: block;
            height: 42.66667vw;
            background-color: #194a92;
            padding: 5.33333vw 2vw;
            display: flex;
            gap: 2.66667vw;
            flex-direction: column;
        }

        .footer_mobile p {
            color: #fff;
            font-size: 3.2vw;
        }

        /* 列表 */
        .news-list li {
            margin-bottom: 6.6666vw;
        }
        .news-list a {
            font-size: 4vw;
        }
        .main-list-title h2 {
            font-size: 5.3333vw;
        }
        .more-link {
            font-size: 3.4666vw;
        }
    }