:root {
            --primary-color: #0a4387;
            --hover-color: #0a4387;
            --text-color: #000;
            --light-gray: #f3f4f6;
            --border-color: #e5e7eb;
            --shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
        }


        /* 导航容器 */
        .header_menu_container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
			padding-left: calc(100vw / 1920 * 120);
           	max-width-: 1920px;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow);
            z-index: 1000;
            padding: 0px;
            transition: all 0.3s ease;
        }

        /* 导航内容 */
        .header_menu_content {        
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        /* 左侧LOGO */
        .header_menu_logo {
            height: 80px;
			padding-left:7%;
            display: flex;
            align-items: center;
            transition: transform 0.3s ease;
        }

        .header_menu_logo:hover {
            transform: scale(1.05);
        }

        .header_menu_logo img {
            height: 100%;
            max-width: 220px;
            object-fit: contain;
        }

        /* 主菜单 */
        .header_menu_main {
            display: flex;
            align-items: center;
            flex-grow: 1;
        }

        /* 一级菜单 */
        .header_menu_list {
            display: flex;
            list-style: none;
            margin-left: 2%;
            position: relative;
        }

        .header_menu_item {
            position: relative;
            padding:0 calc(100vw / 1920 * 40);
        }

        .header_menu_link {
            position: relative;
            display: block;
            padding: 10px 0;
            color: #666666;
            text-decoration: none;
            font-weight: 500;
            font-size: 20px;
            transition: color 0.3s;
        }

        .header_menu_link:hover {
            color: #0a4387;
        }

        /* 一级菜单下划线动画 */
        .header_menu_link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background-color: var(--primary-color);
            transition: width 0.3s ease;
            border-radius: 3px;
        }

        .header_menu_link:hover::after {
            width: 100%;
        }

        /* 下拉箭头 */
        .header_menu_arrow {
            display: inline-block;
            margin-left: 5px;
            font-size: 12px;
            transition: transform 0.3s ease;
        }

        .header_menu_item:hover .header_menu_arrow {
            transform: translateY(2px);
        }

        /* 二级菜单容器 - 关键修改：居中对齐 */
        .header_menu_sub {
            position: absolute;
            margin-top: 5px;
            left: 50%;
            transform--: translateX(-50%) translateY(10px);
            width: 200px;
            background: white;
            box-shadow: var(--shadow);
            border-radius: 0px;
            padding: 10px 0;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 100;
        }

        .header_menu_item:hover .header_menu_sub {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        /* 二级菜单项 */
        .header_menu_sub_item {
            position: relative;
        }

        .header_menu_sub_link {
            display: block;
            padding: 12px 20px;
            color: #333333;
            text-decoration: none;
            font-size: 16px;
            transition: all 0.2s ease;
			text-align:center;
        }

        .header_menu_sub_link:hover {
            background: #0a4387;
            color: #ffffff;
            padding-left: 30px;
			
        }

        /* 二级菜单分隔线 */
        .header_menu_sub_item:not(:last-child)::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 15px;
            right: 15px;
            height: 0px;
            background: var(--border-color);
        }

        /* 右侧工具 */
        .header_menu_tools {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        /* 语言切换 */
        .header_menu_lang {
            display: flex;
            align-items: center;
            gap: 5px;
            color: var(--text-color);
            text-decoration: none;
            font-size: 18px;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 6px 20px;
            border-radius: 4px;
        }

        .header_menu_lang:hover {
            background: var(--light-gray);
            color: var(--primary-color);
        }

        .header_menu_lang i {
            transition: transform 0.3s ease;
        }

        .header_menu_lang:hover i {
            transform: rotate(15deg);
        }

        /* 搜索按钮 */
        .header_menu_search_btn {
            width: 80px;
            height: 80px;
            background: var(--primary-color);
            border: none;
            border-radius: 0px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 8px rgba(37, 99, 235, 0.2);
        }

        .header_menu_search_btn:hover {
            background: var(--hover-color);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(37, 99, 235, 0.3);
        }

        .header_menu_search_btn i {
            color: white;
            font-size: 18px;
            transition: transform 0.3s ease;
        }

        .header_menu_search_btn:hover i {
            transform: scale(1.1);
        }

        /* 全屏搜索层 */
        .header_menu_search_overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(10, 67, 135, 0.85);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .header_menu_search_overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* 搜索框容器 */
        .header_menu_search_container {
            width: 80%;
            max-width: 700px;
            position: relative;
            transform: translateY(-20px);
            transition: transform 0.4s ease;
        }

        .header_menu_search_overlay.active .header_menu_search_container {
            transform: translateY(0);
        }

        /* 搜索输入框 */
        .header_menu_search_input {
            width: 100%;
            padding: 20px 60px 20px 0;
            background: transparent;
            border: none;
            border-bottom: 3px solid white;
            color: white;
            font-size: 28px;
            outline: none;
            transition: border-color 0.3s ease;
        }

        .header_menu_search_input:focus {
            border-bottom-color: #ec921a;
        }

        .header_menu_search_input::placeholder {
            color: rgba(255, 255, 255, 0.7);
            font-weight: 300;
        }

        /* 搜索按钮 */
        .header_menu_search_submit {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            background: transparent;
            border: none;
            color: white;
            font-size: 28px;
            cursor: pointer;
            padding: 10px;
            transition: all 0.3s ease;
        }

        .header_menu_search_submit:hover {
            color: #ec921a;
            transform: translateY(-50%) scale(1.1);
        }

        /* 关闭按钮 */
        .header_menu_search_close {
            position: absolute;
            top: 40px;
            right: 40px;
            background: transparent;
            border: none;
            color: white;
            font-size: 36px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .header_menu_search_close:hover {
            transform: rotate(90deg) scale(1.1);
            color: #ec921a;
        }

        /* 汉堡菜单按钮 */
        .header_menu_hamburger {
            display: none;
            width: 32px;
            height: 25px;
            flex-direction: column;
            justify-content: space-between;
            cursor: pointer;
            z-index: 1100;
            position: relative;
        }

        .header_menu_hamburger span {
            display: block;
            height: 3px;
            width: 100%;
            background: var(--text-color);
            border-radius: 3px;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        /* 移动端菜单样式 */
        .header_menu_mobile {
            position: fixed;
            top: 80px;
            left: 0;
            width: 100%;
            background: white;
            padding: 20px;
            box-shadow: var(--shadow);
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
            z-index: 900;
            max-height: calc(100vh - 80px);
            overflow-y: auto;
        }

        .header_menu_mobile.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }

        .header_menu_mobile_list {
            list-style: none;
        }

        .header_menu_mobile_item {
            border-bottom: 1px solid var(--border-color);
        }

        .header_menu_mobile_link {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            color: var(--text-color);
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: all 0.3s ease;
        }

        .header_menu_mobile_link:hover {
            color: var(--primary-color);
        }

        .header_menu_mobile_arrow {
            font-size: 14px;
            transition: transform 0.4s ease;
            padding: 5px;
        }

        .header_menu_mobile_arrow.active {
            transform: rotate(180deg);
        }

        .header_menu_mobile_sub {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease;
            list-style: none;
            padding-left: 15px;
        }

        .header_menu_mobile_sub.active {
            max-height: 500px;
        }

        .header_menu_mobile_sub_item {
            padding: 12px 0;
        }

        .header_menu_mobile_sub_link {
            display: block;
            color: #555;
            text-decoration: none;
            font-size: 16px;
            transition: all 0.3s ease;
            padding: 5px 10px;
            border-radius: 4px;
        }

        .header_menu_mobile_sub_link:hover {
            color: var(--primary-color);
            background: var(--light-gray);
            padding-left: 15px;
        }
   @media (max-width: 1024px) {
	   
	          .header_menu_link {

            font-size: 16px;

        }
	    }
        /* 响应式设计 */
        @media (max-width: 992px) {
            .header_menu_list {
                display: none;
            }

            .header_menu_hamburger {
                display: flex;
            }

            .header_menu_tools .header_menu_lang {
                flex-direction: column;
                font-size: 12px;
                gap: 2px;
            }

            .header_menu_tools .header_menu_lang i {
                margin-bottom: 2px;
            }
        }

        @media (max-width: 768px) {
            .header_menu_content {
                height: 70px;
            }

            .header_menu_logo img {
                max-width: 200px;
            }

            .header_menu_search_btn {
                width: 36px;
                height: 36px;
            }

            .header_menu_mobile {
                top: 70px;
            }
        }

        @media (max-width: 480px) {
            .header_menu_content {
                padding: 0 15px;
            }
            
            .header_menu_logo {
                height: 40px;
            }
            
            .header_menu_search_btn {
                width: 34px;
                height: 34px;
            }
            
            .header_menu_search_overlay .header_menu_search_input {
                font-size: 22px;
                padding: 15px 50px 15px 0;
            }
            
            .header_menu_search_submit {
                font-size: 22px;
            }
            
            .header_menu_search_close {
                top: 25px;
                right: 25px;
                font-size: 28px;
            }
        }