 <style>
        /* 重置样式确保不影响原网站 */
		
		
        #new-nav-system * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Microsoft YaHei', Arial, sans-serif;
        }
        
        /* 导航容器 - 使用ID确保优先级 */
        #new-nav-system {
            width: 100%;
            background-color: white;
            position: relative;
           /* box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);*/
            z-index: 9999;
        }
        
        /* 主菜单容器 - 限制宽度 */
        .new-nav-container {
            max-width: 1298px;
            margin: 0 auto;
            position: relative;
        }
        
        /* 移动端菜单按钮 */
        #new-mobile-menu-btn {
            display: none;
            color: #333;
            font-size: 24px;
            padding: 15px;
            cursor: pointer;
            background: none;
            border: none;
            position: absolute;
            right: 0;
            top: 0;
        }
        
        /* 主菜单 */
        #new-main-nav {
            display: flex;
            justify-content: center;
            position: relative;
            padding: 0;
            list-style: none;
            height: 100%;
			margin:0;
        }
        
        #new-main-nav > li {
            position: static; /* 关键：使子菜单可以突破容器限制 */
        }
        
        #new-main-nav > li > a {
            display: flex;
            align-items: center;
            color: #000;
            text-decoration: none;
            padding: 0 25px;
            font-size: 16px;
            transition: all 0.3s ease;
            font-weight: 600;
            height: 50px;
        }
        
        #new-main-nav > li:hover > a {
            color: #ff0000;
        }
        
        /* SVG图标样式 */
        .new-icon-caret {
            width: 12px;
            height: 12px;
            margin-left: 6px;
            transition: transform 0.3s ease;
        }
        
        #new-main-nav > li:hover .new-icon-caret {
            transform: rotate(180deg);
            color: #ff0000;
        }
        
        /* 二级菜单样式 - 关键修改 */
        .new-sub-nav {
            position: absolute;
            left: 0;
            top: 100%;
            width: 100vw; /* 视口宽度 */
            left: calc(-50vw + 50%); /* 关键修复：完全消除左侧空白 */
            background-color: white;
            padding: 20px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            z-index: 9998;
            border-top: 1px solid #eee;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
			
			   
        }
		
        
        #new-main-nav > li:hover .new-sub-nav {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        /* 内容容器 - 限制宽度 */
        .new-sub-nav-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-start; /* 修改为flex-start消除左侧间隙 */
            padding: 0 15px; /* 添加内边距替代原来的列间距 */
        }
        
        .new-sub-nav-column {
            min-width: 200px;
            padding: 0 15px 0 0; /* 调整padding只保留右侧间距 */
        }
        
        .new-sub-nav-column h3 {
            color: #666;
            font-size: 15px;
			font-weight: 200;
            margin-bottom: 15px;
            padding-bottom: 5px;
            border-bottom: 1px solid #eee;
        }
        
        .new-sub-nav-column ul {
            list-style: none;
            padding-left: 0; /* 确保ul没有默认padding */
        }
        
        .new-sub-nav-column ul li a {
            display: block;
            color: #666;
			font-weight: 200;
            text-decoration: none;
            padding: 8px 0;
            font-size: 14px;
            transition: all 0.2s ease;
        }
        
        .new-sub-nav-column ul li a:hover {
            color: #ff0000;
            padding-left: 5px;
        }
        
        /* 移动端样式 */
        @media (max-width: 900px) {
            #new-mobile-menu-btn {
                display: block;
            }
            
            #new-main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                position: absolute;
                top: 50px;
                left: 0;
                background-color: white;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
                height: auto;
            }
            
            #new-main-nav.active {
                display: flex;
            }
            
            #new-main-nav > li {
                border-bottom: 1px solid #eee;
            }
            
            #new-main-nav > li > a {
                padding: 15px 20px;
                height: auto;
            }
            
            /* 移动端二级菜单 */
            .new-sub-nav {
                position: static;
                width: 100% !important;
                left: 0 !important;
                padding: 0;
                background-color: #f9f9f9;
                box-shadow: none;
                opacity: 1;
                visibility: visible;
                transform: none;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }
            
            .new-sub-nav.active {
                max-height: 1000px;
                padding: 10px 0;
            }
            
            .new-sub-nav-content {
                flex-direction: column;
                max-width: 100%;
                padding: 0 20px;
            }
            
            .new-sub-nav-column {
                width: 100%;
                padding: 0;
                margin-bottom: 15px;
            }
            
            .new-sub-nav-column h3 {
                font-size: 15px;
                margin-bottom: 10px;
            }
            
            .new-sub-nav-column ul li a {
                padding: 6px 0 6px 15px;
            }
            
            /* 移动端图标旋转 */
            .new-sub-nav.active ~ a .new-icon-caret {
                transform: rotate(180deg);
            }
        }
    </style>