.header_container {
            position: relative;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
        }
        
        /* 顶部栏样式 */
        .header_top_bar {
            background-color: #fff;
            padding: 12px 6%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
            border-bottom: 1px solid #f0f0f0;
        }
        
        .header_welcome {
            font-size: 16px;
            color: #999;
            font-weight: 500;
            letter-spacing: 0.5px;
            animation: fadeIn 0.8s ease-out;
        }
        
        .header_contact {
            font-size: 16px;
            font-weight: 600;
            color: #222;
            animation: fadeIn 0.8s ease-out 0.2s forwards;
            opacity: 0;
        }
        
        .header_contact span {
            color: #dd0000;
            font-weight: 700;
            text-shadow: 0 1px 2px rgba(231, 76, 60, 0.2);
        }
        
        /* 主导航栏样式 */
        .header_main_nav {
            background-color: #fff;
            padding: 0 6%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
            position: relative;
        }
        
        .header_logo {
            height: 80px;
            padding: 10px 0;
            transition: all 0.3s ease;
        }
        
        .header_logo img {
            height: 100%;
            object-fit: contain;
            transition: all 0.3s ease;
        }
        
        /* 桌面端导航菜单 */
        .header_menu_desktop {
            display: flex;
            list-style: none;
        }
        
        .header_menu_item {
            position: relative;
            padding: 25px 10px;
            transition: all 0.3s ease;
        }
        
        .header_menu_item > a {
            text-decoration: none;
            color: #333;
            font-weight: 400;
            font-size: 16px;
            position: relative;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 5px;
            padding: 5px 8px;
            border-radius: 4px;
            z-index: 2;
        }
        
        /* PC端一级菜单悬停效果 */
        .header_menu_item:hover {
            background-color: #dd0000;
        }
        
        .header_menu_item:hover > a {
            color: #fff;
        }
        
        .header_menu_item::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 0;
            background: #dd0000;
            transition: height 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
            z-index: 1;
        }
        
        .header_menu_item:hover::after {
            height: 100%;
        }
        
        /* 二级菜单样式 */
        .header_submenu {
            position: absolute;
            top: 100%;
            left: 0;
            background: #dd0000;
            width: 220px;
            border-radius: 0 0 0px 0px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            z-index: 100;
            padding-top: 10px;
        }
        
        .header_menu_item:hover .header_submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .header_submenu li {
            list-style: none;
            padding: 0;
        }
        
        .header_submenu li a {
            display: block;
            padding: 12px 20px;
            text-decoration: none;
            color: #ffffff;
            font-size: 14px;
            transition: all 0.3s ease;
            border-bottom: 1px dotted #eeeeee;
            position: relative;
        }
        
        .header_submenu li a::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 50%;
            transform: translateY(-50%);
            width: 5px;
            height: 5px;
            background: #dd0000;
            border-radius: 50%;
            opacity: 0;
            transition: all 0.3s ease;
        }
        
        .header_submenu li:last-child a {
            border-bottom: none;
        }
        
        .header_submenu li a:hover {
            background: #dd0000;
            color: #ffffff;
            padding-left: 25px;
        }
        
        .header_submenu li a:hover::before {
            opacity: 1;
            left: 15px;
        }
        
        /* 移动端菜单按钮 */
        .header_menu_toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: #333;
            cursor: pointer;
            padding: 10px;
            z-index: 2001;
            transition: all 0.3s ease;
        }
        
        .header_menu_toggle:hover {
            color: #dd0000;
        }
        
        /* 移动端导航菜单 */
        .header_menu_mobile {
            position: fixed;
            top: 0;
            right: -100%;
            width: 85%;
            max-width: 320px;
            height: 100vh;
            background: #fff;
            z-index: 2000;
            transition: all 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
            box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }
        
        .header_menu_mobile.active {
            right: 0;
        }
        
        .header_menu_mobile_header {
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #eee;
            background: #f8f8f8;
            position: sticky;
            top: 0;
            z-index: 10;
        }
        
        .header_mobile_logo {
            height: 50px;
        }
        
        .header_close_btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #f1f1f1;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        .header_close_btn:hover {
            background: #dd0000;
            color: white;
            transform: rotate(90deg);
        }
        
        .header_mobile_menu {
            list-style: none;
            padding: 20px 0;
        }
        
        .header_mobile_menu_item {
            border-bottom: 1px solid #f0f0f0;
        }
        
        .header_mobile_menu_item > a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            text-decoration: none;
            color: #333;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
        }
        
        .header_mobile_menu_item > a:hover {
            background: #f9f9f9;
            color: #dd0000;
        }
        
        .header_submenu_toggle {
            transition: transform 0.3s ease;
            font-size: 12px;
            margin-left: 5px;
        }
        
        .header_submenu_toggle.active {
            transform: rotate(180deg);
        }
        
        .header_mobile_submenu {
            list-style: none;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
            background: #fafafa;
        }
        
        .header_mobile_submenu.active {
            max-height: 500px;
        }
        
        .header_mobile_submenu li a {
            display: block;
            padding: 12px 20px 12px 35px;
            text-decoration: none;
            color: #555;
            font-size: 15px;
            transition: all 0.2s ease;
            position: relative;
        }
        
        .header_mobile_submenu li a::before {
            content: '';
            position: absolute;
            left: 25px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #dd0000;
            opacity: 0.7;
        }
        
        .header_mobile_submenu li a:hover {
            background: #f0f0f0;
            color: #dd0000;
            padding-left: 38px;
        }
        
        .header_overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1500;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
            backdrop-filter: blur(3px);
        }
        
        .header_overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        /* 粘性导航效果 */
        .header_container.sticky .header_top_bar {
            transform: translateY(-100%);
            opacity: 0;
        }
        
        .header_container.sticky .header_main_nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            padding: 0px 5%;
            z-index: 1000;
            animation: slideDown 0.5s ease-out;
        }
        
        .header_container.sticky .header_logo {
            height: 80px;
        }

        
        /* 动画关键帧 */
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes slideDown {
            from {
                transform: translateY(-100%);
            }
            to {
                transform: translateY(0);
            }
        }
        
        /* 响应式设计 */

        
        @media (max-width: 768px) {
            .header_menu_desktop {
                display: none;
            }
            
            .header_menu_toggle {
                display: block;
            }
            
            .header_top_bar {
				display:none;
                padding: 10px 20px;
            }
            
            .header_main_nav {
                padding: 0 20px;
            }
            
            .header_welcome {
                font-size: 14px;
            }
            
            .header_contact {
                font-size: 16px;
            }
            

        }
        
        @media (max-width: 480px) {
            .header_top_bar {
					display:none;
                flex-direction: column;
                gap: 8px;
                padding: 8px 15px;
            }
            
            .header_welcome, .header_contact {
                text-align: center;
                width: 100%;
            }

        }