:root {
            /* 默认主题：浅蓝 */
            --primary-color: #1e88e5;
            --secondary-color: #0d47a1;
            --accent-color: #ff6d00;
            --text-color: #333;
            --light-bg: #f8f9fa;
            --dark-bg: #212529;
            --border-color: #e0e0e0;
            --transition: all 0.3s ease;
            
            /* 主题颜色预设 */
            --theme-lightblue-primary: #1e88e5;
            --theme-lightblue-secondary: #0d47a1;
            
            --theme-businessgreen-primary: #2e7d32;
            --theme-businessgreen-secondary: #1b5e20;
            
            --theme-elegantpurple-primary: #7b1fa2;
            --theme-elegantpurple-secondary: #4a148c;
            
            --theme-industrialred-primary: #d32f2f;
            --theme-industrialred-secondary: #b71c1c;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            /* font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif; */
			font-family: "宋体", "SimSun", serif;
        }
        
        body {
            color: var(--text-color);
            line-height: 1.6;
            background-color: #fff;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
		.cpzx-btn {
		    display: inline-block;
		    margin-top: 15px;
		    color: var(--primary-color);
		    text-decoration: none;
		    font-size: 14px;
		    transition: var(--transition);
		}
		
		.cpzx-btn:hover {
		    color: var(--secondary-color);
		    text-decoration: underline;
		}
		
        /* 分割线样式 */
        .section-divider {
            height: 1px;
            background: linear-gradient(to right, transparent, var(--primary-color), transparent);
            margin: 60px 0;
            border: none;
        }
        
        /* 顶部电话图标样式 */
        .header-phone {
            position: relative;
            /* background-color: var(--accent-color); */
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            cursor: pointer;
            transition: var(--transition);
            z-index: 10;
        }
        
        .header-phone:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
        }
        
        .header-phone i {
            color: white;
            font-size: 24px;
        }
        
        .phone-tooltip {
            position: absolute;
            right: 25px;
			margin-top: 20px;
            background-color: white;
            color: var(--secondary-color);
            padding: 10px 20px;
            border-radius: 30px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            font-weight: bold;
            /* display: none; */
            white-space: nowrap;
        }
        
        .header-phone:hover .phone-tooltip {
            display: block;
        }
        
        @media (max-width: 768px) {
            .header-phone {
                width: 50px;
                height: 50px;
            }
            
            .header-phone i {
                font-size: 20px;
            }
        }
        
        /* 头部样式 - 新增滚动隐藏/悬停显示逻辑 */
        header {
            background-color: #fff;
            box-shadow: 0 2px 15px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
            width: 100%;
            /* 新增：默认显示，滚动时隐藏的过渡动画 */
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        
        /* 桌面端滚动隐藏导航栏 */
        @media (min-width: 769px) {
            header.hidden {
                transform: translateY(-100%);
                opacity: 0;
            }
            /* 悬停时显示 */
            header:hover {
                transform: translateY(0);
                opacity: 1;
            }
        }
        
        /* 移动端导航栏始终显示 */
        @media (max-width: 768px) {
            header {
                transform: translateY(0) !important;
                opacity: 1 !important;
            }
        }
        
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            position: relative;
        }
        
        /* 导航背景图片 - 修复：补充position:absolute，修正定位 */
        .header-bg888 img {
            position: absolute; 
			/* 关键修复：添加绝对定位，否则背景图无法显示 */
            height: 100px;
            top: 0;
           /* left: 0;
            right: 100;
            bottom: 0; */
            margin-left: 37%;
            /* background: url('https://picsum.photos/id/119/1600/400') center/cover; */
            opacity: 0.4;
            z-index: 1;
			
        }
        
	 
		
        .header-content {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 100px;
            margin-right: 15px;
        }
        
        .logo-text {
            font-size: 38px;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        /* 右侧工具栏（主题切换+电话图标） */
        .header-right {
            display: flex;
            align-items: center;
            gap: 60px;
			/* 主题颜色按钮与电话的间距 */
        }
        
        /* 主题切换按钮样式 */
        .theme-switcher {
            display: flex;
            gap: 7px;
			/* 主题颜色按钮间距 */
  
		}
        
        .theme-btn {
			/* 主题颜色按钮的样式 */
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 2px solid #e0e0e0;
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.7;
        }
        
        .theme-btn:hover {
            transform: scale(1.1);
            opacity: 1;
        }
        
        .theme-btn.active {
            border-color: var(--primary-color);
            opacity: 1;
            box-shadow: 0 0 0 2px rgba(30, 136, 229, 0.3);
        }
        
        .theme-lightblue {
            background-color: var(--theme-lightblue-primary);
        }
        
        .theme-businessgreen {
            background-color: var(--theme-businessgreen-primary);
        }
        
        .theme-elegantpurple {
            background-color: var(--theme-elegantpurple-primary);
        }
        
        .theme-industrialred {
            background-color: var(--theme-industrialred-primary);
        }
        
        /* 分割线 */
        .fengexian {
            height: 2px;
            background: linear-gradient(to right, transparent, var(--primary-color), transparent);
            border: none;
        }
        
        /* 导航菜单样式 - 修复：删除冗余样式定义 */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--dark-bg);
            font-size: 24px;
            cursor: pointer;
        }
        
        .nav-menu {
            display: flex;
            justify-content: center;
            list-style: none;
            padding: 0;
			padding-top: 30px;
            position: relative;
            z-index: 2;
            width: 100%;
            margin: 0;
        }
        
        .nav-menu li {
            position: relative;
        }
        
        .nav-menu li a {
            display: block;
            color: black;
            text-align: center;
            padding: 18px 30px;
            text-decoration: none;
            font-size: 18px;
            transition: var(--transition);
        }
        
        .nav-menu li a:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        /* 顶部导航栏当前选中项样式 */
        .nav-menu li a.active {
            background-color: var(--secondary-color);
            color: white;
            clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
        }
        
        /* 产品中心一级菜单选中项样式 */
        .product-main-item.active .product-main-link {
            background-color: #ffcccc; /* 淡红色 */
            color: #333;
        }
        
        /* 产品二级导航选中项样式（可选） */
       /* 产品二级导航选中项样式 */
       .secondary-nav-item.active {
           background-color: #ffcccc;
           color: #333;
           font-weight: bold; /* 可选：增加字体加粗，提升高亮效果 */
       }
        
        /* 产品一级菜单样式修改 - 增加子菜单支持 */
        .product-submenu {
            display: flex;
            justify-content: center;
            background-color: var(--primary-color);
            padding: 15px 0;
            margin-bottom: 10px; /* 调整间距，为二级导航留出空间 */
            border-radius: 8px;
            flex-wrap: wrap;
        }
        
        .product-main-item {
            position: relative;
            margin: 0 10px;
            cursor: pointer;
        }
        
        .product-main-link {
            font-size: 20px;
            color: white;
            text-decoration: none;
            padding: 8px 20px;
            border-radius: 20px;
            transition: var(--transition);
            display: block;
            cursor: pointer;
        }
        
        .product-main-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        
        /* 新增：二级导航容器样式 */
        .product-secondary-nav {
            background-color: #f0f0f0; /* 灰白色背景 */
            border-radius: 8px;
            padding: 12px 20px;
            margin-bottom: 20px;
            display: none; /* 默认隐藏 */
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        /* 新增：二级导航项样式 */
        .secondary-nav-item {
            color: var(--text-color);
            text-decoration: none;
            font-size: 16px;
            padding: 8px 15px;
            border-radius: 4px;
            transition: var(--transition);
        }
        
        .secondary-nav-item:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        /* 产品子菜单数据（隐藏，仅作为数据源） */
        .product-submenu-items {
            display: none;
        }
        
        /* 移动端适配调整 */
        @media (max-width: 768px) {
            .product-submenu {
                flex-direction: column;
                align-items: stretch;
            }
            
            .product-main-item {
                margin: 5px 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            
            .product-main-link {
                width: 100%;
                text-align: left;
                padding: 10px 20px;
            }
            
            /* 移动端二级导航调整 */
            .product-secondary-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 10px 15px;
            }
            
            .secondary-nav-item {
                width: 100%;
                padding: 10px;
            }
        }
        
        /* Banner轮播样式 */
        .banner {
            height: 600px;
            position: relative;
            overflow: hidden;
            margin-top: 10px;
        }
        
        .banner-slider {
            display: flex;
            width: 300%;
            height: 100%;
            transition: transform 0.5s ease;
        }
        
        .banner-slide {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-align: center;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        
        /* 轮播图片设置 */
        .slide1 {
            background:  url('/style-demo8/img/banner1.jpg') center/cover;
        }
        
        .slide2 {
            background: url('/style-demo8/img/banner2.jpg') center/cover;
        }
        
        .slide3 {
            background:  url('/style-demo8/img/banner1.jpg') center/cover;
        }
        
        .banner-content {
            max-width: 800px;
            padding: 0 20px;
            z-index: 2;
        }
        
        .banner h1 {
            font-size: 48px;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        
        .banner p {
            font-size: 20px;
            margin-bottom: 30px;
        }
        
        /* 轮播控制按钮 */
        .banner-control {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 50px;
            height: 50px;
            background-color: rgba(255,255,255,0.3);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            cursor: pointer;
            transition: var(--transition);
            z-index: 3;
        }
        
        .banner-control:hover {
            background-color: rgba(255,255,255,0.6);
        }
        
        .banner-prev {
            left: 20px;
        }
        
        .banner-next {
            right: 20px;
        }
        
        /* 轮播指示器 */
        .banner-indicators {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 15px;
            z-index: 3;
        }
        
        .indicator {
            /*width: 15px;*/
            /*height: 15px;*/
            /*border-radius: 50%;*/
            /*background-color: rgba(255,255,255,0.5);*/
            /*cursor: pointer;*/
            /*transition: var(--transition);*/
        }
        
        .indicator.active {
            /*background-color: white;*/
            /*transform: scale(1.2);*/
        }
        
        .btn {
            display: inline-block;
            background-color: var(--accent-color);
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: bold;
            transition: var(--transition);
        }
        
        .btn:hover {
            background-color: #e65100;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        
        /* 标题容器样式 - 中英文并排 */
        .title-container {
            display: flex;
            /* justify-content: space-between; */
			justify-content: center;
            align-items: baseline;
            margin-bottom: 20px;
        }
        
        .section-title {
            font-size: 36px;
            color: var(--secondary-color);
            margin: 0;
        }
        
        .section-title a {
            /* background-color: aliceblue; */
            /* clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%); */
            /* padding: 10px 80px; */
        }
        
        .section-eng-title {
            font-size: 24px;
            color: #666;
            font-weight: normal;
            font-style: italic;
        }
        
        .section-subtitle {
            text-align: center;
            font-size: 28px;
            color: #666;
            margin-bottom: 20px;
        }
        
        /* 产品展示 */
		
		.icon-ali {
			  width: 1.25em;
			  height: 1.25em;
			  vertical-align: -0.15em;
			  fill: currentColor;
			  overflow: hidden;
		     }
			 
			/* .icon-ali  i {
			             font-size: 28px;
			             color: var(--primary-color);
			             margin-right: 20px;
			             margin-top: 5px;
			             min-width: 30px;
			             text-align: center;
			         } */
		
        .products {
            padding: 30px 0;
			/* 产品展示板块与banner图之间的间距 */
        }
        
        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
			/* 单个产品之间的间距 */
        }
        
        .product-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: var(--transition);
            /* 默认显示所有产品 */
            display: block;
        }
        
        /* 产品分类隐藏/显示样式 */
        .product-card.hidden {
            display: none;
        }
        
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        
        .product-img {
            /*height: 220px;*/
                          /*此处的高度和下面img的高度会使图片产生水波纹，避免用这个高度*/
            background-color: #f5f5f5;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        
        .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .product-info {
            padding: 20px;
        }
        
        .product-info h3 {
            font-size: 20px;
            margin-bottom: 10px;
			text-align: center;
        }
        
        .product-info p {
            color: #666;
            margin-bottom: 15px;
            height: 30px;
            overflow: hidden;
        }
        
        .product-info .specs {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            color: #777;
        }
        
        /* 公司简介 */
        .about {
            padding: 80px 0;
            background-color: var(--light-bg);
        }
        
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
            font-size: 20px;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-text h2 {
            font-size: 36px;
            margin-bottom: 20px;
            color: var(--secondary-color);
        }
        
        .about-image {
        }
        
        /* 资质证书 - 修复：删除CSS动画，仅保留JS控制 */
        .certificates {
            padding: 80px 0;
            position: relative;
        }
        
        .cert-container {
            position: relative;
            overflow: hidden;
            height: 300px;
            margin: 0 10px; 
            border-radius: 10px;
        }
        
        .cert-scroll {
            display: flex;
            position: absolute;
            /* 修复：移除CSS动画，由JS控制 */
        }
        
        .cert-item {
            min-width: 300px;  
            margin: 0 20px;
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .cert-img {
            height: 200px;
            background-color: #f5f5f5;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        
        .cert-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .cert-info {
            padding: 15px;
            text-align: center;
        }
        
        /* 证书滚动控制按钮 */
        .zzbg {
        }
        
        .cert-control {
            position: absolute;
            top: 59%;
            transform: translateY(-50%);
            width: 50px;
            height: 50px;
            background-color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            cursor: pointer;
            z-index: 10;
            transition: var(--transition);
        }
        
        .cert-control.prev {
            left: 150px; 
            z-index: 11;
        }
        
        .cert-control.next {
            right: 150px; 
            z-index: 11;
        }
        
        .cert-control:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        /* 解决方案 */
        .solutions {
            padding: 80px 0;
            background-color: var(--light-bg);
        }
        
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .solution-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: var(--transition);
            margin-top: 10px;
        }
        
        .solution-card:hover {
            transform: translateY(-10px);
        }
        
        .solution-icon {
            height: 300px;
            background-color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        
        .solution-icon img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .solution-info {
            padding: 20px;
        }
        
        .solution-info h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--secondary-color);
        }
        
        /* 技术实力 */
        .technology {
            padding: 2px 0;
			/* background-color:  #ddd9e8; */
			
        }
		
		.technology img {
			 /* opacity: 0.4; */
			 /* 不用了 */
		}
        
        .tech-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        
        .stat-item {
            padding: 10px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            text-shadow: 4px 4px 6px #000000;
        }
        
        .stat-value {
            font-size: 48px;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        
        /* 新闻中心 */
        .news {
            padding: 80px 0;
            background-color: var(--light-bg);
        }
        
        .news-container {
            display: flex;
            gap: 40px;
        }
        
        .news-focus {
        }
        
        .focus-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0,0,0,0.7);
            color: white;
            padding: 20px;
        }
        
        .news-list {
            flex: 1;
        }
        
        .news-item {
            padding: 15px 20px;
            background: white;
            margin-bottom: 0px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .news-item h3 {
            margin: 0;
            color: var(--secondary-color);
            font-size: 16px;
            flex: 1;
        }
        
        .news-meta {
            font-size: 14px;
            margin-left: 20px;
            white-space: nowrap;
        }
        
        /* 侧边栏容器样式 */
        .sidebar-wrapper {
            position: fixed;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            padding-right: 5px;
        }
        /* 侧边栏单个项样式 */
        .sidebar-item {
            position: relative;
            width: 56px;
            height: 56px;
            background-color: var(--secondary-color);
            color: #ffffff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
            border-radius: 8px 0 0 8px;
            margin-bottom: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .sidebar-item:hover {
            background-color: #2d8cf0;
        }
        /* 图标样式 */
        .sidebar-icon {
            width: 24px;
            height: 24px;
            display: block;
            background-size: 100% 100%;
            transition: all 0.3s ease;
        }
        /* 鼠标悬浮时图标变色（通过滤镜实现） */
        .sidebar-item:hover .sidebar-icon {
            filter: brightness(0) invert(1);
        }
        /* 侧边栏内容（默认隐藏） */
        .sidebar-content {
            position: absolute;
            right: 56px;
            top: 0;
            height: 100%;
            background-color: #ffffff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
            border-radius: 8px 0 0 8px;
            padding: 0 15px;
            display: flex;
            align-items: center;
            opacity: 0;
            visibility: hidden;
            transform: translateX(10px);
            transition: all 0.3s ease;
            z-index: -1;
        }
        /* 悬浮显示内容 */
        .sidebar-item:hover .sidebar-content {
            opacity: 1;
            visibility: visible;
            transform: translateX(0);
        }
        /* 二维码容器样式 */
        .qrcode-container {
            padding: 10px;
            background-color: #fff;
        }
        .qrcode-img {
            width: 120px;
            height: 120px;
            display: block;
        }
        .qrcode-tip {
            text-align: center;
            font-size: 12px;
            color: #666;
            margin-top: 5px;
        }
        /* 联系电话/QQ文本样式 */
        .contact-text {
            color: #333;
            font-size: 14px;
            white-space: nowrap;
        }
        /* 移动端适配 */
        @media (max-width: 768px) {
            .sidebar-wrapper {
                top: auto;
                bottom: 20px;
                transform: none;
            }
            .sidebar-item {
                width: 48px;
                height: 48px;
            }
            .sidebar-content {
                right: 48px;
            }
            .qrcode-img {
                width: 100px;
                height: 100px;
            }
        }
        
        /* Footer */
        footer {
            background-color: var(--dark-bg);
            color: white;
            padding: 60px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-info h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--accent-color);
        }
        
        .footer-contact {
            display: flex;
            align-items: center;
            margin-bottom: 10px;
        }
        
        .footer-contact i {
            margin-right: 10px;
            color: var(--accent-color);
        }
        
        .qrcode {
            text-align: center;
        }
        
        .qrcode img {
            width: 150px;
            margin-bottom: 15px;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--secondary-color);
            font-size: 14px;
            color: #aaa;
            padding-bottom: 70px;
        }
        
        /* 响应式设计 - 平板设备 - 修复：删除冗余的.nav-menu样式定义 */
        @media (min-width:1080px) {
            .logo-text {
                display: none;
            }
            
            .nav-menu li a:hover {
                background-color: var(--primary-color);
                clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
                color: white;
            }
        }
        
        @media (max-width: 1024px) {
            .logo img  {
                display: none;
            }
            
			
			.header-bg888 img {
				display: none;
				}
			
            .header-bg {
                display: none;
            }
            .logo-text  {
                font-size: 40px;
            }
            
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .tech-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .about-content {
                flex-direction: column;
                gap: 30px;
            }
            
            .about-image {
                width: 100%;
                height: 300px;
            }
            
            .news-container {
                flex-direction: column;
            }
            
            .news-focus {
                height: 300px;
                margin-top: 100px;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .nav-menu {
                background-color:black;
            }
            
            .nav-menu li a {
                padding: 15px 20px;
                font-size: 16px;
                color: white;
            }
            
            .nav-menu li a:hover {
                color: white;
            }
            
            .banner h1 {
                font-size: 40px;
            }
            
            .banner p {
                font-size: 18px;
            }
            
            .product-submenu {
                flex-wrap: wrap;
                padding: 10px;
            }
            
            .product-submenu a {
                margin: 5px;
            }
            
            .title-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 5px;
            }
            
            .section-eng-title {
                font-size: 20px;
            }
            
            /* 响应式轮播控制 */
            .banner-control {
                width: 40px;
                height: 40px;
                font-size: 20px;
            }
            
            .indicator {
                width: 12px;
                height: 12px;
            }
        }
        
        /* 响应式设计 - 手机设备 */
        @media (max-width: 768px) {
            .header-top {
                padding: 10px 0;
            }
            
            .logo-text {
                font-size: 30px;
            }
            
            .theme-btn {
                width: 30px;
                height: 30px;
            }
            
            .header-right {
                gap: 10px;
            }
            
            /* 移动端导航菜单 */
            .nav-toggle {
                display: block;
                margin-left: auto;
            }
            
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                z-index: 999;
                background-color: black;
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-menu li a {
                padding: 12px 20px;
                font-size: 16px;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                color: white;
            }
            
            .nav-menu li a:hover {
                color: white;
            }
            
            .banner {
                height: 400px;
            }
            
            .banner h1 {
                font-size: 32px;
            }
            
            .banner p {
                font-size: 16px;
            }
            
            /* 移动端轮播控制 */
            .banner-control {
                width: 35px;
                height: 35px;
                font-size: 18px;
            }
            
            .banner-prev {
                left: 10px;
            }
            
            .banner-next {
                right: 10px;
            }
            
            .indicator {
                width: 10px;
                height: 10px;
            }
            
            .section-title {
                font-size: 28px;
                margin-bottom: 5px;
            }
            
            .section-eng-title {
                font-size: 18px;
            }
            
            .product-grid {
                grid-template-columns: 1fr;
            }
            
            .solution-grid {
                grid-template-columns: 1fr;
            }
            
            .tech-stats {
                grid-template-columns: 1fr;
            }
            
            .cert-container {
                height: 250px;
                margin: 0 30px;
            }
            
            .cert-item {
                min-width: 250px;
            }
            
            .cert-img {
                height: 150px;
            }
            
            .cert-control {
                width: 40px;
                height: 40px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            
            .products, .about, .certificates, .solutions, .technology, .news {
                padding: 40px 0;
            }
            
            .section-divider {
                margin: 40px 0;
            }
            
            .about-text h2 {
                font-size: 28px;
            }
            
            .stat-value {
                font-size: 36px;
            }
            
            footer {
                padding: 40px 0 20px;
            }
            
            .product-submenu {
                flex-direction: column;
                align-items: center;
            }
            
            .product-submenu a {
                width: 80%;
                text-align: center;
            }
            
            /* 移动端新闻列表样式调整 */
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 15px;
            }
            
            .news-item h3 {
                margin-bottom: 5px;
            }
            
            .news-meta {
                margin-left: 0;
            }
        }
        
        /* 响应式设计 - 小屏手机 */
        @media (max-width: 480px) {
            .logo-text {
                font-size: 20px;
            }
            
            .banner h1 {
                font-size: 28px;
            }
            
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            
            .nav-menu {
                background-color:black;
            }
            
            .nav-menu li a:hover {
                color: white;
            }
            
            .cert-item {
                min-width: 220px;
            }
            
            .product-info p {
                height: auto;
                margin-bottom: 10px;
            }
            
            .header-phone {
                width: 45px;
                height: 45px;
            }
            
            .header-phone i {
                font-size: 18px;
            }
            
            .phone-tooltip {
                display: none !important;
            }
        }