body {
            padding-top: 70px; /* 为固定导航栏留出空间 */
        }
        
        .header_menu-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: #fff;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        
        .header_menu-inner {
            display: flex;
            height: 70px;
            justify-content: space-between;
            align-items: center;
            padding: 5px 5%;

            margin: 0 auto;
        }
        
        .header_menu-logo {
            display: flex;
            align-items: center;
        }
        
        .header_menu-logo img {
            height: 50px;
            width: auto;
            transition: all 0.3s ease;
        }
        
        .header_menu-nav {
            display: flex;
            align-items: center;
        }
        
        .header_menu-list {
            display: flex;
            list-style: none;
            margin-right: 30px;
        }
        
        .header_menu-item {
            position: relative;
            margin: 0 5px;
        }
        
        .header_menu-link {
            text-decoration: none;
            color: #333;
            font-weight: 400;
            font-size: 16px;
            padding: 25px 12px;
            transition: all 0.3s ease;
            position: relative;
            display: block;
            border-radius: 0px 0px 0 0;
        }
        
        /* 鼠标悬停时一级菜单样式变化 */
        .header_menu-item:hover .header_menu-link {
            background: #004098;
            color: white;
        }
        
        .header_menu-contact {
            display: flex;
            align-items: center;
            margin-right: 25px;
			font-size: 18px;
            color: #cc0000;
            font-weight: 600;
            text-decoration: none;
        }
        
        .header_menu-phone-icon {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 35px;
            height: 35px;
            background: #ffffff;
			border:1px solid #004098;
            border-radius: 50%;
            margin-right: 10px;
            color: #004098;
            box-shadow-: 0 4px 8px rgba(26, 115, 232, 0.3);
        }
        
        .header_menu-search {
            position: relative;
        }
        
        .header_menu-search-icon {
            font-size: 20px;
            color: #666;
            cursor: pointer;
            transition: all 0.3s ease;
            padding: 8px;
            border-radius: 50%;
            background: #f5f5f5;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .header_menu-search-icon:hover {
            color: #ffffff;
            background: #004098;
        }
        
        .header_menu-search-box {
            position: absolute;
            top: 130%;
            right: 0;
            width: 300px;
            padding: 15px;
            background: #fff;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
            border-radius: 0px;
            display: flex;
            align-items: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 1001;
        }
        
        .header_menu-search-box.active {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .header_menu-search-input {
            flex: 1;
            padding: 10px 15px;
            border: 1px solid #ddd;
            border-radius: 4px 0 0 4px;
            outline: none;
            font-size: 14px;
            transition: all 0.3s ease;
        }
        
        .header_menu-search-input:focus {
            border-color: #004098;
            box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
        }
        
        .header_menu-search-btn {
            padding: 13px 16px;
            background: #004098;
            color: white;
            border: none;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .header_menu-search-btn:hover {
            background: #0d61d1;
        }
        
        /* 下拉菜单样式 */
        .header_menu-mega {
            position: fixed;
			border-top: 1px solid #eeeeee;
            top: 70px; /* 修改为与导航栏高度一致 */
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            padding: 30px 0px 50px 0px;
            display: none;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            z-index: 999;
            opacity: 0;
            transform: translateY(-10px);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }
        
        .header_menu-item:hover .header_menu-mega {
            display: block;
            opacity: 1;
            transform: translateY(0);
        }
        
        .header_menu-mega-inner {
            display: flex;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .header_menu-mega-left {
            flex: 1;
            padding-right: 30px;
            border-right: 1px solid #e0e0e0;
        }
        
        .header_menu-mega-right {
            flex: 2;
            padding-left: 30px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        
        .header_menu-mega-title {
            font-size: 18px;
            font-weight: 700;
			height:40px;
         
            padding:10px 20px;
            border-radius: 6px;
            transition: all 0.3s ease;
            color: #333;
        }
        
        .header_menu-mega-link {
            display: block;
			
            padding: 10px 20px;
            text-decoration: none;
            color: #444;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            border-radius: 4px;
        }
        
        .header_menu-mega-link:hover {
            color: #1a73e8;
			height:40px;
            background: #f0f6ff;
        }
        
        .header_menu-mega-link:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 20px;
            width: calc(60% - 10px);
            height: 1px;
            background: linear-gradient(to right, #004098 15px, #eee 0);
        }
        
        /* 移动端样式 */
        .header_menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 45px;
            height: 45px;
            cursor: pointer;
            background-: #f5f5f5;
            border-radius: 6px;
            padding: 8px;
        }
        
        .header_menu-toggle span {
            width: 25px;
            height: 3px;
            background: #333;
            margin: 2px 0;
            transition: all 0.3s ease;
            border-radius: 2px;
        }
        
        .header_menu-toggle.active {
            background: #004098;
        }
        
        .header_menu-toggle.active span {
            background: #fff;
        }
        
        .header_menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        
        .header_menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        
        .header_menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }
        
        /* 响应式设计 */
        @media (max-width: 1024px) {
            .header_menu-list {
                margin-right: 15px;
            }
            
            .header_menu-item {
                margin: 0 3px;
            }
            
            .header_menu-link {
                padding: 25px 15px;
            }
            
            .header_menu-contact span {
                display: none;
            }
            
            .header_menu-phone-icon {
                margin-right: 0;
            }
        }
        
        @media (max-width: 768px) {
			
		.header_menu-logo img {
            height: 38px;
            width: auto;
            transition: all 0.3s ease;
        }
            .header_menu-nav {
                position: fixed;
                top: 70px;
                right: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background: #fff; /* 改为白色背景 */
                flex-direction: column;
                align-items: flex-start;
                padding: 25px;
                transition: all 0.4s ease;
                overflow-y: auto;
                box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
            }
            
            .header_menu-nav.active {
                right: 0;
            }
            
            .header_menu-list {
                flex-direction: column;
                width: 100%;
                margin-right: 0;
                margin-bottom: 25px;
            }
            
            .header_menu-item {
                width: 100%;
                margin: 0;
                border-bottom: 1px solid #eee; /* 改为浅色边框 */
            }
            
            .header_menu-link {
                display: block;
                padding: 15px 0;
                color: #000; /* 改为黑色文字 */
                border-radius: 0;
                font-weight: 600;
            }
            
            /* 移动端悬停效果 */
            .header_menu-item:hover .header_menu-link {
                background: #f0f6ff;
                color: #1a73e8;
            }
            
            .header_menu-contact {display: none !important;
                margin: 20px 0;
                color: #ff6600;
            }
            
            .header_menu-search {display: none !important;
                margin: 20px 0;
                width: 100%;
            }
            
            .header_menu-search-box {
                width: 100%;
                right: 0;
            }
            
            .header_menu-mega {
                display: none !important; /* 移动端隐藏二级菜单 */
            }
            
            .header_menu-toggle {
                display: flex;
            }
        }