/* 自定义导航菜单基础样式 */
.custom-nav-menu-wrapper {
    position: relative;
    width: 100%;
}

.custom-nav-menu-wrapper ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
}

.custom-nav-menu-wrapper ul li {
    position: relative;
}

.custom-nav-menu-wrapper ul li a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: #333;
    font-size: 14px;
    transition: background 0.3s;
}

.custom-nav-menu-wrapper ul li a:hover {
    background: #f5f5f5;
}

/* 子菜单样式 */
.custom-nav-menu-wrapper ul ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 200px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    z-index: 999;
    flex-direction: column;
}

.custom-nav-menu-wrapper ul li:hover > ul {
    display: flex;
}

/* 子菜单箭头 */
.submenu-toggle {
    float: right;
    margin-left: 8px;
    cursor: pointer;
}

.submenu-toggle i {
    transition: transform 0.3s;
}

/* 汉堡按钮 */
.mobile-menu-toggle {
    display: none;
    background: #0073aa;
    color: white;
    border: none;
    padding: 10px 15px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 4px;
}

.mobile-menu-toggle.active {
    background: #c00;
}

/* 响应式：移动端 */
@media (max-width: 768px) {
    .custom-nav-menu-wrapper ul {
        flex-direction: column;
        background: #fff;
        border-top: 1px solid #eee;
    }

    .custom-nav-menu-wrapper ul li a {
        padding: 14px 20px;
    }

    .custom-nav-menu-wrapper ul ul {
        display: none !important; /* 由 JS 控制 */
        position: static; /* 取消绝对定位，垂直堆叠 */
        box-shadow: none;
        border-left: 2px solid #eee;
    }

    .custom-nav-menu-wrapper ul ul li a {
        padding-left: 40px;
        font-size: 13px;
    }

    /* 显示汉堡按钮 */
    .mobile-menu-toggle {
        display: block;
        width: 100%;
        margin-bottom: 10px;
    }
}

#mobile-menu-toggle i {
    font-size: 18px;
}

/* 移动端显示按钮 */
@media (max-width: 768px) {
    #mobile-menu-toggle {
        display: block;
    }

    .custom-nav-menu {
        display: none;
    }
}

/* 桌面端隐藏按钮 */
@media (min-width: 769px) {
    #mobile-menu-toggle {
        display: none;
    }
}

/* 汉堡按钮基础样式 */
#mobile-menu-toggle {
    position: absolute;
    right: 0;
    top: 0;
    background: #fff;
    border: none;
    width: 50px;
    height: 50px;
    cursor: pointer;
    z-index: 999;
    border-radius: 25px;
    padding: 0;
    font-size: 0;
    border: solid 1px #245aa7;
}

#mobile-menu-toggle i {
    font-size: 18px;
    color: #1c1c1c;
}

/* 移动端显示按钮 */
@media (max-width: 1023px) {
    #mobile-menu-toggle {
        display: block !important; /* 覆盖内联样式 */
    }
}

/* 桌面端隐藏按钮（JS 也会控制） */
@media (min-width: 1024px) {
    #mobile-menu-toggle {
        display: none !important;
    }
}