/* 顶部容器样式 */
.topBox {
    width: 100% !important;
    background: url(../images/side_bg.png) center no-repeat;
    background-size: cover;
    background-position: center center;
    overflow: hidden;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 50px;
    height: auto;
}

.logoBox {
    height: 90px;
}

.yuanxunBox {
    height: 55px;
}

/* PC端专属元素：大屏时显示，小屏隐藏 */
.pc-only {
    display: block;
}


/* 搜索框样式 */
.searchBox {
    color: #fff;
    /* 增加文字颜色，保证可读性 */
    padding: 5px 10px;
}

/* 移动端菜单按钮样式 */
.mobile-menu-btn {
    border: none;
    background: transparent;
    cursor: pointer;
}

.icon-bar {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 1px;
    border: #fff 1px solid;
    margin: 4px 0;
}

/* 轮播图样式 - 响应式高度 */
.slideBox {
    width: 100%;
    height: 450px;
}
#full-screen-slider{   
    width: 100%;  
    height: 375px; 
    float: left;
    position: relative;
}
#slides {
    display: block;
    width: 100%;
    height: 375px;
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
}
#slides li {
    display: block;
    width: 100%;
    height: 375px;
    list-style: none;
    padding: 0;
    margin: 0;
    position: absolute;
}


/* 导航容器样式 */
.navBox {
    width: 100%;
    background-color: #2764b3;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 导航列表基础样式（默认PC端） */
.ul-list {
    width: 1200px;
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-between;
}

.ul-list>li {
    position: relative;
}

.ul-list>li>a {
    display: block;
    padding: 15px;
    color: white;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.ul-list>li>a:hover {
    background-color: #2756ba;
}

/* 二级菜单默认隐藏 */
.ol-list {
    list-style: none;
    padding: 0;
    margin: 0;
    position: absolute;
    top: 100%;
    left: 0;
    font-size: 1.4rem;
    min-width: 180px;
    background: #2764b3;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 9999;
    display: none !important;
}

.ol-list>li>a {
    display: block;
    padding: 10px 15px;
    color: white;
    text-decoration: none;
    transition: font-size 0.3s ease, background-color 0.3s ease;
}

.ol-list>li>a:hover {
    background-color: #0066cc;
    color: #fff;
    font-size: 1.8rem;
    font-weight: 600;
}

/* ========== 媒体查询：大屏PC端（≥1201px） ========== */
@media (min-width: 1201px) {

    /* 显示PC端专属元素，隐藏移动端按钮 */
    .mobile-menu-btn {
        display: none !important;
    }

    /* PC端hover显示二级菜单 */
    .ul-list>li:hover .ol-list {
        display: block !important;
    }
}

/* ========== 媒体查询：小屏/移动端（≤1200px） ========== */
@media (max-width: 1200px) {



    .logoBox {
        height: 80px;
    }

    .yuanxunBox {
        height: 50px;
    }

    /* 轮播图高度适配 */
    .slideBox {
        height: 250px;
    }


}

/* ========== 媒体查询：平板端（≤992px） ========== */
@media (max-width: 992px) {
    .topBox {
        padding: 10px 15px;
    }

    .logoBox {
        height: 70px;
    }

    .yuanxunBox {
        height: 43px;
    }

    .searchBox {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }


    /* 导航列表改为纵向排列 */
    .ul-list {
        width: 100%;
        /* 占满容器宽度 */
        flex-direction: column;
        display: none;
        /* 默认隐藏，点击按钮显示 */
    }

    /* 导航显示状态（通过JS添加show类） */
    .ul-list.show {
        display: flex !important;
    }

    /* 移动端导航项样式 */
    .ul-list>li>a {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        /* 浅色分隔线，更协调 */
        padding: 12px 15px;
    }

    /* 移动端二级菜单样式 */
    .ol-list {
        position: static;
        width: 100%;
        background: #1e5099;
        /* 深色系，保持风格统一 */
        box-shadow: none;
        border: none;
        font-size: 1.2rem;
    }

    .ol-list>li>a {
        padding-left: 30px;
        color: #fff;
    }

    .ol-list>li>a:hover {
        font-size: 1.4rem;
        /* 移动端缩小hover字体放大幅度 */
    }

    .slideBox {
        display: none;
    }
}

/* ========== 媒体查询：手机端（≤768px） ========== */
@media (max-width: 768px) {
    .logoBox {
        height: 40px;
    }

    .yuanxunBox {
        height: 22px;
    }


    .slideBox {
        height: 150px;
    }
}

/* 版权信息样式优化（可选，补充原有缺失） */
.banquanBox {
    background-color: #f5f5f5;
    padding: 20px 0;
    margin-top: 20px;
}

.bqTxt {
    text-align: center;
    color: #666;
    font-size: 14px;
}