.header_menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: #fff;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            z-index: 1000;
        }
        
        /* 导航栏内部容器 */
        .header_menu_container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
            height: 80px;
        }
        
        /* Logo样式 */
        .header_menu_logo {
            flex-shrink: 0;
        }
        
        .header_menu_logo img {
            height: 60px;
            width: auto;
            transition: transform 0.3s ease;
        }
        
        .header_menu_logo:hover img {
            transform: scale(1.01);
        }
        
        /* 主导航菜单 */
        .header_menu_nav {
            display: flex;
            align-items: center;
        }
        
        /* 一级菜单列表 */
        .header_menu_list {
            display: flex;
            list-style: none;
        }
        
        /* 一级菜单项 */
        .header_menu_item {
            position: relative;
            margin: 0 15px;
        }
        
        /* 一级菜单链接 */
        .header_menu_link {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: #333;
            font-weight: 500;
            padding: 10px 0;
            position: relative;
            transition: color 0.3s ease;
        }
        
        /* 一级菜单链接悬停效果 */
        .header_menu_link:hover {
            color: #254c91;
        }
        
        /* 一级菜单下划线动画 */
        .header_menu_link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: #1a73e8;
            transition: all 0.3s ease;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        
        .header_menu_link:hover::after {
            width: 100%;
        }
        
        /* 下拉箭头 */
        .header_menu_arrow {
            margin-left: 5px;
            font-size: 10px;
            transition: transform 0.3s ease;
            color: #666;
        }
        
        .header_menu_item:hover .header_menu_arrow {
            transform: rotate(180deg);
            color: #1a73e8;
        }
        
        /* 二级菜单 */
        .header_menu_submenu {
            position: absolute;
            top: 120%;
            left: 0;
            width: 200px;
            background-color: #fff;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.12);
            border-radius: 5px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 1001;
            padding: 0px 0;
        }
        
        .header_menu_item:hover .header_menu_submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        /* 二级菜单项 */
        .header_menu_subitem {
            list-style: none;
            border-bottom: 1px solid #f0f0f0;
        }
        
        .header_menu_subitem:last-child {
            border-bottom: none;
        }
        
        /* 二级菜单链接 */
        .header_menu_sublink {
            display: block;
            padding: 12px 15px;
            text-decoration: none;
            color: #555;
            transition: all 0.2s ease;
            position: relative;
        }
        
        .header_menu_sublink:hover {
            background-color: #254c91;
            color: #ffffff;
            padding-left: 20px;
        }
        
        .header_menu_sublink:hover::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 4px;
            background-color: #ffffff;
            border-radius: 50%;
        }
        
        /* 电话区域 */
        .header_menu_phone {
            display: flex;
            align-items: center;
            color: #666666;
            font-weight: 500;
            text-decoration: none;
            margin-left: 20px;
            background-color-: #1a73e8;
            padding: 10px 15px;
            border-radius: 50px;
            transition: all 0.3s ease;
            box-shadow-: 0 3px 10px rgba(26, 115, 232, 0.3);
        }
        
        .header_menu_phone:hover {
            background-color: #f9f9f9;
            transform: translateY(-1px);
            box-shadow-: 0 5px 15px rgba(26, 115, 232, 0.4);
        }
        
        .header_menu_phone i {
            margin-right: 8px;
            font-size: 16px;
			color: #ffffff;
            background-color: #254c91;
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }
        
        /* 移动端菜单按钮 */
        .header_menu_toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: #333;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: %;
            background-color: #f0f0f0;
            transition: all 0.3s ease;
        }
        
        .header_menu_toggle:hover {
            background-color: #e0e0e0;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .header_menu_container {
                padding: 0 15px;
            }
            
            .header_menu_item {
                margin: 0 10px;
            }
        }
        
        @media (max-width: 768px) {
            .header_menu_toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            
            .header_menu_nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: #fff;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s ease;
            }
            
            .header_menu_nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            
            .header_menu_list {
                flex-direction: column;
                width: 100%;
            }
            
            .header_menu_item {
                margin: 0;
                width: 100%;
            }
            
            .header_menu_link {
                padding: 5px 0;
                width: 100%;
                justify-content: space-between;
            }
            
            .header_menu_submenu {
                position: static;
                width: 100%;
                box-shadow: none;
                opacity: 1;
                visibility: visible;
                transform: none;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
				color: #333333;
                background-color: #ffffff;
                margin-top: 10px;
                border-radius: 4px;
            }
            
            .header_menu_item:hover .header_menu_submenu {
                max-height: 0px;
            }
            
            .header_menu_phone {
                margin: 15px 0 0 0;
                justify-content: center;
                width: 100%;
            }
        }