body {
    zoom: 1.5; /* 1.25 代表放大到 125%，你可以根据需要改成 1.1 或 1.5 */
    transform-origin: top left;
}

        /* --- 沉稳的深蓝配色方案 --- */
        :root {
            --primary-navy: #1162A7;    /* 沉稳深蓝 - 主品牌色、主标题 */
            --deep-navy: #0D203A;       /* 极深海军蓝 - 首页背景遮罩、底部页脚 */
            --accent-blue: #1E64E0;     /* 商务蓝 - 鼠标悬停、高亮交互 */
            --icy-blue: #E3F2FD;        /* 极浅冰蓝 - 浅色背景、表格表头 */
            --white: #ffffff;           
            
            --text-dark: #333333;       /* 深灰 - 正文主体文字 */
            --text-light: #666666;      /* 浅灰 - 次要文字说明 */
            --transition: all 0.3s ease;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; font-family: "Microsoft YaHei", sans-serif; }
        body { background-color: var(--white); color: var(--text-dark); line-height: 1.6; overflow-x: hidden; }
        a { text-decoration: none; color: inherit; cursor: pointer; }
        ul { list-style: none; }

        /* --- 导航栏 --- */
        header {
            position: fixed; top: 0; width: 100%; z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
            padding: 72px 5%;
            display: flex; justify-content: space-between; align-items: center;
        }
        header.scrolled {
            padding: 40px 5%;
            background: var(--white);
            box-shadow: 0 4px 24px rgba(22, 54, 92, 0.15);
        }

        /* --- Logo 动画 --- */
        .logo-container { position: relative; display: flex; align-items: center; justify-content: center; height: 48px; width: 160px; cursor: pointer; }
        .logo-text { font-size: 24px; font-weight: bold; color: #1162A7; letter-spacing: 2px; position: absolute; width: 100%; text-align: center; transition: all 0.5s ease-in-out; opacity: 1; transform: scale(1); transform-origin: center center; }
        .logo-image { position: absolute; height: 48px; width: 100%; opacity: 0; transition: all 0.5s ease-in-out; transform: scale(0.8); object-fit: contain; transform-origin: center center; }
        .logo-container:hover .logo-text { opacity: 0; transform: scale(1.15); }
        .logo-container:hover .logo-image { opacity: 1; transform: scale(1); }

        nav ul { display: flex; gap: 24px; align-items: center; }
        nav ul li a { font-size: 16px; font-weight: 500; transition: var(--transition); }
        nav ul li a:hover { color: var(--accent-blue); }
        .lang-switch { border: 1px solid var(--primary-navy); padding: 6px 12px; border-radius: 4px; color: var(--primary-navy) !important; font-size: 14px !important; }
        .lang-switch:hover { background-color: var(--primary-navy); color: var(--white) !important; }

        /* --- 多级联动导航下拉菜单（含防手抖驻停效果） --- */
        .nav-dropdown-parent { position: relative; padding-bottom: 24px; margin-bottom: -24px; }
        
        /* 1级下拉框 */
        .nav-dropdown-box {
            display: none; position: absolute; top: 48px; left: -20px; background: white; 
            box-shadow: 0 8px 24px rgba(13,32,58,0.15); width: 180px; 
            border-top: 3px solid var(--primary-navy); border-radius: 0 0 8px 8px; z-index: 1001;
            padding: 8px 0;
        }
        .nav-dropdown-parent:hover .nav-dropdown-box { display: block; }

        /* 一级子选项容器 */
        .dropdown-item-container { position: relative; }
        .dropdown-item-container > a { 
            display: flex; justify-content: space-between; align-items: center;
            padding: 14px 20px; font-size: 15px; font-weight: bold; color: var(--text-dark) !important; transition: var(--transition); 
        }
        .dropdown-item-container:hover > a { background-color: var(--icy-blue); color: var(--primary-navy) !important; }

        /* 2级下拉框 */
        .nav-sub-dropdown-box {
            display: none; position: absolute; top: -8px; left: 180px; background: white; 
            box-shadow: 0 8px 24px rgba(13,32,58,0.15); width: 280px; 
            border-left: 3px solid var(--accent-blue); border-radius: 0 8px 8px 0; z-index: 1002;
            padding: 8px 0;
        }
        .dropdown-item-container:hover .nav-sub-dropdown-box { display: block; }
        .nav-sub-dropdown-box a { 
            display: block; padding: 12px 20px; font-size: 14px; font-weight: normal; color: var(--text-dark) !important; border-bottom: 1px solid #f9f9f9; transition: var(--transition); 
        }
        .nav-sub-dropdown-box a:last-child { border-bottom: none; }
        .nav-sub-dropdown-box a:hover { background-color: #f0f7ff; color: var(--accent-blue) !important; padding-left: 26px; }

        /* --- 首页背景图 & 标语 --- */
        .hero-banner {
            height: 400px;
            background: linear-gradient(rgba(13, 32, 58, 0.85), rgba(22, 54, 92, 0.7)), 
                        url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?auto=format&fit=crop&q=80&w=1600') center/cover;
            display: flex; justify-content: center; align-items: center;
            margin-top: 0;
        }
        .hero-banner h1 { color: var(--white); font-size: 3rem; text-shadow: 0 8px 16px rgba(0,0,0,0.6); letter-spacing: 4px; }

        /* --- 页面布局 --- */
        .page-content { display: none; padding-top: 96px; min-height: 80vh; padding-bottom: 64px; }
        .page-content.active { display: block; }
        .section-title { text-align: center; margin: 0 0 48px 0; font-size: 32px; color: var(--primary-navy); font-weight: bold; }

        /* --- 首页产品模块 --- */
        .product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 0 5%; margin-bottom: 64px; }
        .product-card { border: 1px solid #eee; border-radius: 8px; overflow: hidden; transition: var(--transition); text-align: center; background: #fff; cursor: pointer; }
        .product-card:hover { transform: translateY(-8px); box-shadow: 0 8px 24px rgba(22, 54, 92, 0.15); border-color: #cce4f7; }
        .product-card img { width: 100%; height: 224px; object-fit: contain; }
        .product-card h3 { padding: 16px 8px; font-size: 16px; color: var(--text-dark); transition: var(--transition); }
        .product-card:hover h3 { color: var(--accent-blue); }

        /* --- 关于我们排版样式 --- */
        .about-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .about-top-row { display: flex; gap: 48px; align-items: center; margin-bottom: 64px; }
        .about-top-left { flex: 1.2; }
        .about-p { font-size: 15px; color: var(--text-dark); line-height: 1.8; margin-bottom: 24px; text-align: justify; }
        .about-p:last-child { margin-bottom: 0; }
        .about-top-right { flex: 1; display: flex; justify-content: center; }
        
        /* 业务版图/战略中心地图预留框 */
        .map-placeholder-box img {
            width: 100%;
            height: 100%;
            object-fit: contain; 
            border-radius: 12px;
            padding: 16px;       
        }

        /* 下部三列网格布局 */
        .about-bottom-grid { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 32px; 
            margin-top: 32px; 
            align-items: stretch; 
        }
        .about-bottom-card { 
            display: flex; 
            flex-direction: column; 
            justify-content: space-between; 
            height: 100%;                   
        }
        .about-bottom-card h3 { font-size: 20px; color: #444444; margin-bottom: 16px; font-weight: bold; text-align: left; }
        
        /* 下部实景图预留框 */
       .img-placeholder-box {
            width: 100%;
            height: 220px; /* 强制统一高度 */
            overflow: hidden;
            border-radius: 12px;
        }
        .img-placeholder-box img {
            width: 100%;
            height: 100%;
            object-fit: cover; /* 自动剪裁填充，保持比例不变，填充整个220px高度 */
            display: block;
        }

        
        /* --- 产品独立页 --- */
        .product-detail-layout { display: flex; padding: 0 8%; gap: 40px; }
        .detail-main { flex: 4; } 
        .detail-main img { width: 100%; height: auto; max-height: 600px; object-fit: contain; border-radius: 8px; box-shadow: 0 8px 16px rgba(22, 54, 92, 0.08);}
        .side-nav { flex: 1; border-left: 2px solid var(--icy-blue); padding-left: 32px; align-self: start; position: sticky; top: 120px; }
        .side-nav h3 { font-size: 18px; color: var(--deep-navy); margin-bottom: 24px; padding-bottom: 8px; border-bottom: 1px solid #eef5fb; }
        .side-nav h4 { font-size: 15px; color: var(--primary-navy); margin: 20px 0 10px; font-weight: bold; border-left: 3px solid var(--accent-blue); padding-left: 8px; }
        .side-thumb { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; cursor: pointer; padding: 8px; border: 1px solid transparent; transition: 0.2s; border-radius: 8px; }
        .side-thumb img { 
            width: 64px; 
            height: 64px; 
            border-radius: 4px; 
            object-fit: contain !important; 
            background-color: #fafafa !important; 
            border: 1px solid #eee; 
        }
        .side-thumb span { font-size: 14px; font-weight: 500; color: var(--text-dark); }
        .side-thumb:hover { background: #f4f9ff; border-color: #dbeaff; }
        .side-thumb.active { background: var(--icy-blue); border-color: var(--primary-navy); color: var(--primary-navy); }
        .param-table { width: 100%; border-collapse: collapse; margin-top: 24px; }
        .param-table th, .param-table td { border: 1px solid #eef5fb; padding: 16px 24px; font-size: 14px; text-align: left; }
        .param-table th { background: var(--icy-blue); color: var(--deep-navy); font-weight: bold; width: 30%; }
        .param-table tr:hover { background: #f8fbff; }

       
        /* --- 新闻中心 --- */
        .news-container { padding: 0 10%; max-width: 1200px; margin: 0 auto; }
        .news-item { display: flex; gap: 32px; padding: 24px; border-bottom: 1px solid #eee; cursor: pointer; transition: var(--transition); border-radius: 8px; border: 1px solid transparent; border-bottom-color: #eee; }
        .news-item:hover { background: #f8fbff; transform: translateX(8px); border-color: var(--icy-blue); box-shadow: 0 8px 24px rgba(22, 54, 92, 0.08); }
        .news-date { min-width: 140px; text-align: center; border-right: 3px solid var(--icy-blue); padding-right: 24px; color: var(--accent-blue); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: bold; letter-spacing: 1px; }
        .news-content-preview { flex: 1; }
        .news-title { font-size: 18px; color: var(--primary-navy); margin-bottom: 8px; font-weight: bold; transition: var(--transition); }
        .news-item:hover .news-title { color: var(--accent-blue); }
        .news-summary { font-size: 14px; color: var(--text-light); line-height: 1.6; }

        .news-detail-container { padding: 0 15%; max-width: 1200px; margin: 0 auto; }
        .news-detail-header { text-align: center; margin-bottom: 40px; padding-bottom: 24px; border-bottom: 1px solid #eee; }
        .news-detail-header h2 { color: var(--primary-navy); font-size: 24px; margin-bottom: 16px; line-height: 1.5; }
        .news-detail-header span { color: var(--text-light); font-size: 14px; }
        .news-detail-body { color: var(--text-dark); line-height: 2; font-size: 16px; }
        .news-detail-body p { margin-bottom: 24px; text-indent: 2em; }
        
        .nd-img-placeholder { width: 100%; max-width: 800px; height: 360px; margin: 0 auto 40px auto; background-color: #f8fbff; border: 2px dashed #dbeaff; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--text-light); font-size: 16px; font-weight: 500; }
        .btn-back { display: inline-block; margin-top: 48px; padding: 16px 32px; border: 1px solid var(--primary-navy); color: var(--primary-navy); border-radius: 8px; transition: var(--transition); cursor: pointer; text-align: center; font-weight: bold; }
        .btn-back:hover { background: var(--primary-navy); color: var(--white); }

        /* --- 应用场景 --- */
        .scene-tabs { text-align: center; margin-bottom: 40px; }
        .scene-tabs button { padding: 16px 40px; font-size: 16px; margin: 0 8px; border: 2px solid var(--primary-navy); background: none; color: var(--primary-navy); cursor: pointer; transition: 0.3s; border-radius: 8px; font-weight: bold; }
        .scene-tabs button:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
        .scene-tabs button.active { background: var(--primary-navy); color: var(--white); border-color: var(--primary-navy); box-shadow: 0 8px 16px rgba(22, 54, 92, 0.3); }
        
        .scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 0 5%; display: none; }
        .scene-grid.active { display: grid; }
        .scene-item { border: 1px solid #eee; padding: 20px 16px; border-radius: 8px; background: #fff; transition: 0.3s; display: flex; flex-direction: column; justify-content: space-between; }
        .scene-item:hover { box-shadow: 0 8px 24px rgba(22, 54, 92, 0.12); border-color: #cce4f7; transform: translateY(-8px); }
        .scene-item img { width: 100%; height: 184px; object-fit: cover; margin-bottom: 16px; border-radius: 4px; }
        .scene-item h4 { color: var(--primary-navy); font-size: 16px; margin-bottom: 8px; text-align: center; font-weight: bold; }

        .scene-item p { 
            font-size: 14px !important;        
            color: var(--text-light); 
            text-align: center; 
            line-height: 1.6; 
            white-space: pre-line !important;  
            word-break: keep-all !important;   
            padding-top: 4px;
        }

        #grid-civil { display: none; }
        #grid-civil.active { display: flex !important; justify-content: center !important; gap: 40px !important; }
        #grid-civil .scene-item { width: 380px !important; flex-shrink: 0 !important; padding: 24px 20px !important; }
        #grid-civil .scene-item img { height: 240px !important; }

        /* --- 案例中心样式更新：自动按三个一排换行排布 --- */
        .case-grid { 
            display: none; 
            grid-template-columns: repeat(3, 1fr); /* 核心布局：严格执行每排3个，多出自动换行 */
            gap: 32px; 
            padding: 0 5%; 
            max-width: 1500px; 
            margin: 0 auto; 
        }
        .case-grid.active { display: grid; }
        .case-item { border: 1px solid #eee; border-radius: 8px; overflow: hidden; background: #fff; transition: var(--transition); box-shadow: 0 4px 12px rgba(0,0,0,0.03); display: flex; flex-direction: column; cursor: pointer; }
        .case-item:hover { transform: translateY(-8px); box-shadow: 0 16px 32px rgba(22, 54, 92, 0.12); border-color: #cce4f7; }
        .case-item img { width: 100%; height: 240px; object-fit: cover; border-bottom: 1px solid #f5f5f5; }
        .case-item h4 { color: var(--primary-navy); font-size: 18px; margin: 20px 20px 16px; font-weight: bold; }
        
        /* 案例设备标签样式 */
        .case-model-tag {
            color: var(--accent-blue);
            font-size: 14px;
            margin: 0 20px 24px;
            font-weight: bold;
            padding: 8px 12px;
            background: #f0f7ff;
            border-radius: 4px;
            display: inline-block;
            align-self: flex-start;
        }

        /* --- 新增：案例独立详情页样式 --- */
        .case-detail-container { padding: 0 10%; max-width: 1200px; margin: 0 auto; }
        .cd-header { display: flex; align-items: center; margin-bottom: 32px; border-bottom: 1px solid #eee; padding-bottom: 16px; }
        .btn-cd-back { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; color: var(--primary-navy); cursor: pointer; transition: 0.3s; padding: 8px 16px; border-radius: 4px; background: #f4f9ff; border: 1px solid #dbeaff; font-weight: bold; }
        .btn-cd-back:hover { background: var(--primary-navy); color: var(--white); border-color: var(--primary-navy); }
        .btn-cd-back svg { width: 18px; height: 18px; }
        
        .cd-title { font-size: 28px; color: var(--primary-navy); font-weight: bold; margin-bottom: 32px; text-align: center; }
        
        /* 独立页项目信息网格（仿照您的图排布，但保持纯净清爽的背景） */
        .cd-meta-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 20px; 
            background: #fafcfd; 
            padding: 32px; 
            border-radius: 8px; 
            margin-bottom: 40px; 
            border: 1px solid #eef5fb;
        }
        .cd-meta-item { font-size: 16px; display: flex; align-items: flex-start; }
        .cd-meta-label { color: var(--text-light); width: 110px; flex-shrink: 0; }
        .cd-meta-value { font-weight: bold; color: var(--primary-navy); line-height: 1.5; }

        .cd-img-wrapper { text-align: center; margin-bottom: 40px; }
        .cd-img-wrapper img { width: 100%; max-width: 1000px; border-radius: 8px; box-shadow: 0 8px 24px rgba(22, 54, 92, 0.08); object-fit: contain; }

        .cd-desc-box { 
            padding: 24px 32px; 
            background: #fff; 
            border-left: 4px solid var(--accent-blue); 
            box-shadow: 0 4px 20px rgba(0,0,0,0.04);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-dark);
            margin-bottom: 64px;
            text-align: justify;
        }


        /* --- 底部 --- */
        footer { background: var(--deep-navy); color: var(--icy-blue); padding: 48px 10% 24px; margin-top: 80px; }
        .footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-nav a { display: block; margin-bottom: 16px; color: #a8cbf0; font-size: 14px; transition: 0.2s; opacity: 0.8; cursor: pointer;}
        .footer-nav a:hover { color: var(--white); padding-left: 8px; opacity: 1; }
        .footer-info p { font-size: 14px; margin-bottom: 16px; opacity: 0.9; color: var(--white); }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 24px; text-align: center; font-size: 12px; color: rgba(255,255,255,0.5); display: flex; justify-content: space-between; align-items: center;}
        
        /* 响应式高级优化补丁 */
        .product-grid, 
        .scene-grid, 
        .case-grid,
        .patent-page-layout, 
        .product-detail-layout, 
        .news-container, 
        .news-detail-container,
        #selection > div {
            max-width: 1500px;
            margin-left: auto !important;
            margin-right: auto !important;
            padding-left: 24px !important;
            padding-right: 24px !important;
        }

        @media (min-width: 1300px) {
            header { padding: 24px calc((100% - 1200px) / 2 + 24px); }
            header.scrolled { padding: 16px calc((100% - 1200px) / 2 + 24px); }
        }

        @media (max-width: 1440px) {
            nav ul { gap: 16px; }
            nav ul li a { font-size: 15px; }
            .logo-container { width: 140px; }
            .logo-text { font-size: 22px; }
            .product-grid, .scene-grid { grid-template-columns: repeat(3, 1fr); }
            .case-grid { grid-template-columns: repeat(3, 1fr); }
        }

        @media (max-width: 1024px) {
            .product-grid, .scene-grid { grid-template-columns: repeat(2, 1fr); }
            .case-grid { grid-template-columns: repeat(2, 1fr); }
            .about-top-row { flex-direction: column; gap: 32px; }
            .about-top-left, .about-top-right { width: 100%; flex: none; }
            .map-placeholder-box { max-width: 100%; height: 300px; }
            .about-bottom-grid { grid-template-columns: repeat(2, 1fr); }
            .product-detail-layout { flex-direction: column; }
            .side-nav { border-left: none; border-top: 2px solid var(--icy-blue); padding-left: 0; padding-top: 32px; margin-top: 40px; position: static; }
            .patent-page-layout { flex-direction: column-reverse; }
            .patent-list { height: 300px; }
            .footer-content { grid-template-columns: 1fr; gap: 32px; }
            .cd-meta-grid { grid-template-columns: 1fr; gap: 16px;}
        }
/* 强制消除所有动态注入容器的约束 */
.product-extra-info {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin-top: 40px !important;
    background: transparent !important;
    border: none !important;
    overflow: visible !important;
}

/* 强制图片放大且清晰 */
#pd-more-content img {
    display: block !important;
    width: 100% !important;         /* 强制铺满 */
    max-width: 1200px !important;   /* 限制在大屏下依然清晰 */
    height: auto !important;        /* 随宽度自动拉长 */
    margin: 0 auto 30px auto !important;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15) !important;
}   
/* 彻底清除图片高度限制 */
#pd-more-content img {
    width: 100% !important;        /* 强制铺满 */
    max-height: none !important;   /* 解除高度限制 */
    height: auto !important;       /* 自动比例 */
    object-fit: fill !important;   /* 铺满 */
    display: block;
    margin-bottom: 20px;
} 
  

/* --- 核心专利展示部分自定义样式 --- */
.patent-section {
    padding: 60px 8%;            /* 保持与你网页整体左右边距一致 */
    background-color: #ffffff;   /* 纯白背景 */
    text-align: center;
    max-width: 1400px;           /* 限制全屏最大宽度 */
    margin: 0 auto;
}

/* 标题区域 */
.patent-title-container {
    margin-bottom: 40px;
}

.patent-title {
    color: var(--primary-navy);  /* 使用你原有的沉稳深蓝 */
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 12px;
}

/* 标题下方的商务蓝装饰短线 */
.patent-title-line {
    width: 60px;
    height: 4px;
    background-color: var(--accent-blue); /* 使用你原有的商务蓝 */
    margin: 0 auto;
    border-radius: 2px;
}

/* 🎯 核心大图外包裹层：控制图片在页面中的极佳占比 */
.patent-image-wrapper {
    width: 100%;
    max-width: 1200px;           /* 限制最大宽度，防止在超大显示器上过度拉伸模糊 */
    margin: 0 auto;
    border-radius: 12px;         /* 微微的圆角提升高级感 */
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08); /* 淡淡的现代化阴影，让长图有立体悬浮感 */
    background-color: #f9fcff;   /* 预留浅色底色，在图片未加载出来时保持美观 */
}

/* 🎯 核心大图：彻底解除高度限制，宽度撑满 */
.patent-large-img {
    width: 100% !important;
    height: auto !important;     /* 高度根据图片真实比例自适应伸展，页面自然变长 */
    display: block;
    object-fit: contain !important; /* 关键：完整显示，绝对不裁剪专利图上的任何文字或边框 */
}


/* --- 2026-07-13 苹果风与可编辑首页增强补丁 --- */
:root {
    --apple-blue: #0071e3;
    --line-blue: #d7e7f7;
    --panel-blue: #f5f9fe;
}

header {
    background: rgba(255, 255, 255, 0.78) !important;
    backdrop-filter: blur(24px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(24px) saturate(180%) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06) !important;
    box-shadow: none !important;
    padding: 18px 5% !important;
}

header.scrolled {
    padding: 12px 5% !important;
    background: rgba(255, 255, 255, 0.86) !important;
    box-shadow: 0 1px 0 rgba(0,0,0,0.06) !important;
}

.logo-text {
    color: var(--apple-blue) !important;
    font-weight: 700 !important;
    letter-spacing: 1.2px !important;
    text-shadow: none !important;
}

nav ul { gap: 18px !important; }

header nav > ul > li > a {
    position: relative;
    padding: 8px 0 !important;
    border: none !important;
    border-radius: 0 !important;
    color: rgba(29,29,31,0.86) !important;
    font-size: 15px !important;
    font-weight: 400 !important;
    background: transparent !important;
}

header nav > ul > li > a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--apple-blue);
    transform: translateX(-50%);
    transition: all 0.3s ease;
}

header nav > ul > li > a:hover,
.nav-dropdown-parent:hover > a {
    color: var(--apple-blue) !important;
    background: transparent !important;
    box-shadow: none !important;
}

header nav > ul > li > a:hover::after,
.nav-dropdown-parent:hover > a::after { width: 100%; }

.lang-switch {
    border: none !important;
    padding: 8px 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
}

.lang-switch:hover {
    background: transparent !important;
    color: var(--apple-blue) !important;
}

.nav-dropdown-box,
.nav-sub-dropdown-box {
    display: block !important;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    background: rgba(255,255,255,0.88) !important;
    backdrop-filter: blur(24px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(24px) saturate(180%) !important;
    border: 1px solid rgba(0,0,0,0.06) !important;
    border-radius: 14px !important;
    box-shadow: 0 18px 50px rgba(0,0,0,0.10) !important;
    padding: 10px !important;
    transform: translateY(8px) scale(0.98);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
}

.nav-dropdown-box {
    top: 46px !important;
    left: -24px !important;
    width: 208px !important;
    border-top: 1px solid rgba(0,0,0,0.06) !important;
}

.nav-dropdown-parent:hover .nav-dropdown-box {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

.dropdown-item-container > a {
    border-radius: 10px;
    padding: 12px 14px !important;
    font-weight: 400 !important;
    color: rgba(29,29,31,0.88) !important;
}

.dropdown-item-container:hover > a {
    background: rgba(0,113,227,0.08) !important;
    color: var(--apple-blue) !important;
}

.nav-sub-dropdown-box {
    top: -10px !important;
    left: 198px !important;
    width: 292px !important;
    border-left: 1px solid rgba(0,0,0,0.06) !important;
    transform: translateX(8px) scale(0.98);
}

.dropdown-item-container:hover .nav-sub-dropdown-box {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0) scale(1);
}

.nav-sub-dropdown-box a {
    border-bottom: none !important;
    border-radius: 10px;
    padding: 11px 14px !important;
    color: rgba(29,29,31,0.86) !important;
}

.nav-sub-dropdown-box a:hover {
    background: rgba(0,113,227,0.08) !important;
    color: var(--apple-blue) !important;
    padding-left: 18px !important;
}

.hero-banner {
    position: relative;
    overflow: hidden;
    background: #0b1e34 !important;
}

.hero-slider {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.03);
    transition: opacity 0.8s ease, transform 1.2s ease;
}

.hero-slide.active {
    opacity: 1;
    transform: scale(1);
}

.hero-slide::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(9,26,48,0.88), rgba(13,32,58,0.64) 45%, rgba(13,32,58,0.18));
}

.hero-content {
    position: relative;
    z-index: 1;
    width: min(1200px, calc(100% - 48px));
    margin: 0 auto;
    color: #fff;
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-size: 13px;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.76);
}

.hero-kicker::before {
    content: "";
    width: 28px;
    height: 1px;
    background: rgba(255,255,255,0.72);
}

.hero-content h1 {
    max-width: 720px;
    font-size: 46px !important;
    line-height: 1.16;
    letter-spacing: 0 !important;
    text-align: left;
}

.hero-lead {
    max-width: 650px;
    margin-top: 18px;
    font-size: 17px;
    line-height: 1.9;
    color: rgba(255,255,255,0.78);
}

.hero-dots {
    position: absolute;
    z-index: 3;
    left: max(24px, calc((100% - 1200px) / 2 + 24px));
    bottom: 30px;
    display: flex;
    gap: 10px;
}

.hero-dot {
    width: 34px;
    height: 2px;
    border: none;
    background: rgba(255,255,255,0.35);
    cursor: pointer;
    padding: 0;
    transition: all 0.3s ease;
}

.hero-dot.active {
    width: 52px;
    background: #fff;
}

.admin-shell { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.admin-note { background: #f8fbff; border: 1px solid var(--line-blue); border-radius: 8px; padding: 18px 22px; color: var(--text-light); margin-bottom: 24px; line-height: 1.8; }
.admin-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.admin-box { border: 1px solid var(--line-blue); border-radius: 8px; background: #fff; padding: 24px; }
.admin-box h3 { color: var(--primary-navy); margin-bottom: 16px; }
.admin-box label { display: block; color: var(--text-light); font-size: 13px; margin: 14px 0 6px; }
.admin-box input, .admin-box textarea { width: 100%; border: 1px solid #dce8f5; border-radius: 6px; padding: 10px 12px; font-size: 14px; font-family: inherit; outline: none; }
.admin-box textarea { min-height: 88px; resize: vertical; }
.admin-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.admin-btn { border: 1px solid var(--primary-navy); background: var(--primary-navy); color: #fff; border-radius: 6px; padding: 10px 18px; cursor: pointer; font-weight: bold; }
.admin-btn.secondary { background: #fff; color: var(--primary-navy); }
.admin-repeat { border-top: 1px solid #eef5fb; padding-top: 16px; margin-top: 16px; }

@media (max-width: 1024px) {
    nav ul { gap: 16px !important; }
    .hero-content h1 { font-size: 36px !important; }
    .admin-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
    header { position: static !important; padding: 18px 20px !important; }
    .hero-content { width: calc(100% - 36px); }
    .hero-content h1 { font-size: 30px !important; }
    .hero-lead { font-size: 15px; }
    .hero-dots { left: 18px; bottom: 22px; }
}



/* --- 2026-07-13 翻页灵敏度与顶部子项悬停增强 --- */
.nav-dropdown-parent::after {
    content: "";
    position: absolute;
    left: -18px;
    right: -18px;
    top: 100%;
    height: 18px;
}

.nav-dropdown-parent:hover .nav-dropdown-box,
.nav-dropdown-parent:focus-within .nav-dropdown-box {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: translateY(0) scale(1) !important;
}

.dropdown-item-container::after {
    content: "";
    position: absolute;
    top: 0;
    right: -20px;
    width: 24px;
    height: 100%;
}

.dropdown-item-container:hover > a,
.dropdown-item-container:focus-within > a {
    background: rgba(0,113,227,0.10) !important;
    color: var(--apple-blue) !important;
    transform: translateX(2px);
}

.dropdown-item-container:hover .nav-sub-dropdown-box,
.dropdown-item-container:focus-within .nav-sub-dropdown-box {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: translateX(0) scale(1) !important;
}

.nav-sub-dropdown-box a:hover,
.nav-sub-dropdown-box a:focus {
    background: rgba(0,113,227,0.10) !important;
    color: var(--apple-blue) !important;
    padding-left: 20px !important;
}

.hero-dots {
    bottom: 26px !important;
    gap: 4px !important;
    align-items: center;
}

.hero-dot {
    width: 58px !important;
    height: 30px !important;
    border: none !important;
    background: transparent !important;
    position: relative;
    cursor: pointer;
}

.hero-dot::before {
    content: "";
    position: absolute;
    left: 8px;
    right: 8px;
    top: 50%;
    height: 3px;
    border-radius: 999px;
    background: rgba(255,255,255,0.38);
    transform: translateY(-50%);
    transition: all 0.24s ease;
}

.hero-dot:hover::before {
    background: rgba(255,255,255,0.78);
    height: 4px;
}

.hero-dot.active::before {
    left: 4px;
    right: 4px;
    background: #fff;
}

.hero-arrow {
    position: absolute;
    z-index: 4;
    top: 50%;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255,255,255,0.28);
    border-radius: 50%;
    background: rgba(255,255,255,0.10);
    color: rgba(255,255,255,0.9);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    transform: translateY(-50%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.24s ease;
}

.hero-arrow:hover {
    background: rgba(255,255,255,0.20);
    border-color: rgba(255,255,255,0.48);
    transform: translateY(-50%) scale(1.04);
}

.hero-arrow.prev { left: 28px; }
.hero-arrow.next { right: 28px; }

@media (max-width: 720px) {
    .hero-arrow { display: none; }
    .hero-dot { width: 48px !important; }
}



/* --- 2026-07-13 箭头居中与产品详情清晰度修正 --- */
.hero-arrow {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 0 !important;
    line-height: 0 !important;
}

.hero-arrow::before {
    content: "";
    width: 12px;
    height: 12px;
    border-top: 4px solid rgba(255,255,255,0.92);
    border-left: 4px solid rgba(255,255,255,0.92);
    box-sizing: border-box;
}

.hero-arrow.prev::before {
    transform: translateX(2px) rotate(-45deg);
}

.hero-arrow.next::before {
    transform: translateX(-2px) rotate(135deg);
}

.product-detail-layout {
    max-width: 1580px !important;
    gap: 48px !important;
}

.detail-main {
    min-width: 0;
}

.detail-main > img#pd-img {
    width: 100% !important;
    max-height: 680px !important;
    object-fit: contain !important;
    image-rendering: auto;
}

#pd-more-content {
    max-width: 100% !important;
}

#pd-more-content img {
    width: 100% !important;
    max-width: none !important;
    max-height: none !important;
    height: auto !important;
    object-fit: contain !important;
    image-rendering: auto !important;
    border-radius: 10px;
}

#pd-more-content img:first-child {
    margin-top: 36px !important;
}

@media (min-width: 1280px) {
    .detail-main {
        flex: 4.6 !important;
    }
    .side-nav {
        flex: 0 0 310px !important;
    }
}



/* --- 2026-07-13 产品详情页比例再平衡 --- */
.product-detail-layout {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) 300px !important;
    max-width: 1420px !important;
    padding-left: 32px !important;
    padding-right: 32px !important;
    gap: 44px !important;
    align-items: start !important;
}

.detail-main {
    width: 100% !important;
    min-width: 0 !important;
    flex: none !important;
}

.detail-main > img#pd-img {
    max-height: 520px !important;
    width: 100% !important;
    object-fit: contain !important;
    background: #fff;
}

#pd-more-content {
    width: 100% !important;
    max-width: 1040px !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

#pd-more-content img {
    width: 100% !important;
    max-width: 1040px !important;
    height: auto !important;
    max-height: none !important;
    object-fit: contain !important;
    box-shadow: 0 8px 24px rgba(22,54,92,0.10) !important;
}

#pd-more-content img:first-child {
    margin-top: 28px !important;
}

.side-nav {
    width: 300px !important;
    flex: none !important;
    padding-left: 28px !important;
    top: 96px !important;
}

.side-nav h3 {
    font-size: 17px !important;
    margin-bottom: 20px !important;
}

.side-nav h4 {
    font-size: 14px !important;
    margin: 18px 0 10px !important;
}

.side-thumb {
    gap: 12px !important;
    padding: 7px !important;
    margin-bottom: 13px !important;
}

.side-thumb img {
    width: 56px !important;
    height: 56px !important;
}

.side-thumb span {
    font-size: 13px !important;
    line-height: 1.55 !important;
}

@media (max-width: 1024px) {
    .product-detail-layout {
        display: flex !important;
        max-width: 100% !important;
        padding-left: 24px !important;
        padding-right: 24px !important;
    }
    .side-nav {
        width: 100% !important;
    }
    #pd-more-content {
        max-width: 100% !important;
    }
}



/* --- 2026-07-13 移除首屏左右圆形箭头 --- */
.hero-arrow {
    display: none !important;
}



/* --- 2026-07-28 新闻中心暂时隐藏 + 移动端自适应优化补丁 --- */
/* 新闻页面及新闻详情保留在源代码中，仅暂时不显示；上下导航入口保持原样。 */
#news,
#news-detail {
    display: none !important;
}

/* 产品选型页面保留在源代码中，仅暂时不显示。 */
#selection {
    display: none !important;
}

/* 避免移动浏览器自行放大文字导致版式错位。 */
html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

@media (max-width: 900px) {
    html {
        font-size: clamp(14px, 3.65vw, 16px);
    }

    body {
        zoom: 1 !important;
        width: 100% !important;
        min-width: 0 !important;
        font-size: 1rem;
        overflow-x: hidden !important;
    }

    img,
    video,
    canvas,
    svg {
        max-width: 100%;
    }

    /* 移动端顶部导航：保留全部入口，以横向滑动避免文字挤压或溢出。 */
    header,
    header.scrolled {
        position: sticky !important;
        top: 0 !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 8px !important;
        padding: 10px 12px !important;
    }

    .logo-container {
        width: 132px !important;
        height: 38px !important;
        margin: 0 auto !important;
        flex: 0 0 auto !important;
    }

    .logo-text {
        font-size: clamp(19px, 5.5vw, 22px) !important;
    }

    .logo-image {
        height: 38px !important;
    }

    header nav {
        width: 100% !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    header nav::-webkit-scrollbar {
        display: none;
    }

    header nav > ul {
        width: max-content !important;
        min-width: 100% !important;
        display: flex !important;
        flex-wrap: nowrap !important;
        justify-content: flex-start !important;
        gap: 0 !important;
    }

    header nav > ul > li {
        flex: 0 0 auto !important;
    }

    header nav > ul > li > a,
    .lang-switch {
        min-height: 40px;
        display: flex !important;
        align-items: center !important;
        padding: 9px 10px !important;
        font-size: clamp(13px, 3.5vw, 15px) !important;
        line-height: 1.35 !important;
        white-space: nowrap !important;
    }

    /* 手机没有稳定的悬停操作，主导航入口仍可直接进入对应页面。 */
    .nav-dropdown-box,
    .nav-sub-dropdown-box,
    .nav-dropdown-parent::after,
    .dropdown-item-container::after {
        display: none !important;
    }

    .page-content {
        padding-top: clamp(24px, 6vw, 40px) !important;
        padding-bottom: 44px !important;
        min-height: auto !important;
    }

    #home.page-content {
        padding-top: 0 !important;
    }

    .hero-banner {
        height: clamp(360px, 68svh, 500px) !important;
        min-height: 360px !important;
    }

    .hero-content {
        width: calc(100% - 36px) !important;
    }

    .hero-content h1 {
        max-width: 100% !important;
        font-size: clamp(28px, 7.8vw, 40px) !important;
        line-height: 1.22 !important;
    }

    .hero-lead {
        max-width: 100% !important;
        font-size: clamp(14px, 3.8vw, 16px) !important;
        line-height: 1.75 !important;
    }

    .hero-kicker {
        font-size: clamp(11px, 3.2vw, 13px) !important;
        letter-spacing: 1.4px !important;
    }

    .hero-dots {
        left: 12px !important;
        right: 12px !important;
        bottom: 14px !important;
        justify-content: center !important;
    }

    .hero-dot {
        width: 42px !important;
    }

    .section-title,
    .patent-title,
    .cd-title {
        font-size: clamp(24px, 6.8vw, 30px) !important;
        line-height: 1.35 !important;
    }

    .section-title {
        margin-bottom: 30px !important;
        padding-left: 16px;
        padding-right: 16px;
    }

    .product-grid,
    .scene-grid,
    .case-grid,
    .product-detail-layout,
    .news-container,
    .news-detail-container,
    #selection > div {
        padding-left: 16px !important;
        padding-right: 16px !important;
    }

    .about-container,
    .admin-shell,
    .case-detail-container {
        padding-left: 16px !important;
        padding-right: 16px !important;
    }

    .about-top-row {
        gap: 26px !important;
        margin-bottom: 42px !important;
    }

    .about-p,
    .cd-desc-box,
    .news-detail-body {
        font-size: clamp(14px, 3.8vw, 16px) !important;
        line-height: 1.8 !important;
    }

    .about-bottom-grid {
        gap: 20px !important;
    }

    .img-placeholder-box {
        height: auto !important;
        aspect-ratio: 16 / 10;
    }

    .patent-section {
        padding: 42px 16px !important;
    }

    .scene-tabs {
        display: flex !important;
        gap: 10px !important;
        padding: 0 16px !important;
        overflow-x: auto !important;
        justify-content: flex-start !important;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .scene-tabs::-webkit-scrollbar {
        display: none;
    }

    .scene-tabs button {
        flex: 0 0 auto !important;
        margin: 0 !important;
        padding: 11px 20px !important;
        font-size: clamp(14px, 3.7vw, 16px) !important;
    }

    .scene-item img,
    .case-item img {
        height: auto !important;
        aspect-ratio: 16 / 10;
    }

    #grid-civil.active {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 18px !important;
    }

    #grid-civil .scene-item {
        width: 100% !important;
    }

    #grid-civil .scene-item img {
        height: auto !important;
        aspect-ratio: 16 / 10;
    }

    .product-detail-layout {
        gap: 30px !important;
    }

    .detail-main > img#pd-img {
        max-height: none !important;
    }

    .side-nav {
        margin-top: 18px !important;
        padding-top: 24px !important;
    }

    .side-thumb img {
        width: 60px !important;
        height: 60px !important;
    }

    .param-table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .param-table th,
    .param-table td {
        min-width: 132px;
        padding: 12px 14px !important;
        font-size: 13px !important;
    }

    .cd-meta-grid {
        padding: 20px !important;
    }

    .cd-meta-item {
        font-size: clamp(14px, 3.8vw, 16px) !important;
    }

    .cd-meta-label {
        width: 92px !important;
    }

    .cd-desc-box {
        padding: 20px !important;
    }

    .admin-box {
        padding: 18px !important;
    }

    .admin-box input,
    .admin-box textarea,
    .admin-btn {
        font-size: 16px !important;
    }

    #contact > div {
        padding: 20px 16px 10px !important;
    }

    #contact > div > div:nth-child(2) {
        grid-template-columns: 1fr !important;
        gap: 8px !important;
        margin-bottom: 42px !important;
    }

    #contact > div > div:last-child {
        margin-top: 48px !important;
    }

    footer {
        padding: 38px 20px 22px !important;
        margin-top: 44px !important;
    }

    .footer-content {
        gap: 26px !important;
        margin-bottom: 28px !important;
    }

    .footer-bottom {
        flex-direction: column !important;
        justify-content: center !important;
        gap: 12px !important;
        line-height: 1.65 !important;
    }
}

@media (max-width: 640px) {
    header nav {
        overflow: visible !important;
    }

    header nav > ul {
        width: 100% !important;
        min-width: 0 !important;
        flex-wrap: wrap !important;
        justify-content: center !important;
        row-gap: 0 !important;
    }

    header nav > ul > li > a,
    .lang-switch {
        min-height: 34px !important;
        padding: 7px 8px !important;
        font-size: clamp(12px, 3.35vw, 14px) !important;
    }

    .product-grid,
    .scene-grid,
    .case-grid,
    .about-bottom-grid {
        grid-template-columns: 1fr !important;
        gap: 18px !important;
    }

    .product-card img {
        height: auto !important;
        aspect-ratio: 4 / 3;
    }

    .map-placeholder-box {
        height: auto !important;
    }

    .news-item {
        flex-direction: column !important;
        gap: 12px !important;
        padding: 18px !important;
    }

    .news-date {
        min-width: 0 !important;
        justify-content: flex-start !important;
        border-right: 0 !important;
        border-bottom: 2px solid var(--icy-blue);
        padding: 0 0 10px !important;
    }
}



/* --- 2026-07-28 产品系列独立总览页（桌面端与移动端共用） --- */
.product-overview-shell {
    width: 100%;
    max-width: 1420px;
    margin: 0 auto;
    padding: 0 32px;
}

.product-overview-heading {
    margin-bottom: 28px;
    color: var(--deep-navy);
    font-size: 22px;
    font-weight: 700;
}

.product-overview-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    margin-bottom: 72px;
}

.product-overview-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid #e8eef5;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 5px 18px rgba(13, 32, 58, 0.05);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.product-overview-card:hover {
    transform: translateY(-6px);
    border-color: #c9ddf2;
    box-shadow: 0 16px 34px rgba(22, 54, 92, 0.12);
}

.product-overview-card-image {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 238px;
    padding: 18px;
    background: #fff;
}

.product-overview-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-overview-card h3 {
    min-height: 68px;
    padding: 18px 16px;
    border-top: 1px solid #f0f3f7;
    color: var(--text-dark);
    font-size: 16px;
    line-height: 1.55;
    text-align: center;
    transition: color 0.3s ease;
}

.product-overview-card:hover h3 {
    color: var(--accent-blue);
}

.product-family-nav {
    padding-top: 42px;
    border-top: 1px solid #e7edf4;
}

.product-family-nav-title {
    margin-bottom: 26px;
    color: var(--deep-navy);
    font-size: 22px;
    font-weight: 700;
}

.product-family-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.product-family-group {
    min-width: 0;
    padding: 22px;
    border: 1px solid #e4edf6;
    border-radius: 12px;
    background: #f8fbff;
}

.product-family-group > h3 {
    margin-bottom: 16px;
    padding-left: 10px;
    border-left: 3px solid var(--accent-blue);
    color: var(--primary-navy);
    font-size: 17px;
    line-height: 1.5;
}

.product-family-link {
    display: flex;
    align-items: center;
    gap: 13px;
    width: 100%;
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid transparent;
    border-radius: 9px;
    background: #fff;
    cursor: pointer;
    transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.product-family-link:last-child {
    margin-bottom: 0;
}

.product-family-link:hover {
    transform: translateX(3px);
    border-color: #d6e6f6;
    background: #f2f8ff;
}

.product-family-link img {
    width: 56px;
    height: 56px;
    flex: 0 0 56px;
    object-fit: contain;
    border: 1px solid #edf1f5;
    border-radius: 7px;
    background: #fff;
}

.product-family-link span {
    min-width: 0;
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.55;
}

@media (max-width: 1024px) {
    .product-overview-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .product-family-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .product-overview-shell {
        padding: 0 16px;
    }

    .product-overview-heading,
    .product-family-nav-title {
        margin-bottom: 20px;
        font-size: 20px;
    }

    .product-overview-grid,
    .product-family-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .product-overview-grid {
        margin-bottom: 52px;
    }

    .product-overview-card-image {
        height: auto;
        min-height: 220px;
        aspect-ratio: 4 / 3;
    }

    .product-overview-card h3 {
        min-height: 0;
        padding: 16px 14px;
    }

    .product-family-nav {
        padding-top: 34px;
    }

    .product-family-group {
        padding: 18px;
    }

    .product-family-link {
        min-height: 76px;
    }
}


/* --- 2026-07-28 移动端底部导航、场景页、联系页与Logo轮播优化补丁 --- */
@keyframes mobileHavstonTextCycle {
    0%, 40% {
        opacity: 1;
        transform: scale(1);
    }
    48%, 92% {
        opacity: 0;
        transform: scale(0.88);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes mobileHavstonLogoCycle {
    0%, 40% {
        opacity: 0;
        transform: scale(0.84);
    }
    48%, 92% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(0.84);
    }
}

@media (max-width: 900px) {
    /* 顶部品牌区：HAVSTON文字与Logo自动交替轮播，仅影响移动端。 */
    .logo-container .logo-text {
        animation: mobileHavstonTextCycle 7s ease-in-out infinite;
        will-change: opacity, transform;
    }

    .logo-container .logo-image {
        animation: mobileHavstonLogoCycle 7s ease-in-out infinite;
        will-change: opacity, transform;
    }

    /* 应用场景页：蒸汽、热水两个子标题居中排列。 */
    #scene .scene-tabs {
        justify-content: center !important;
        overflow: visible !important;
        padding-left: 16px !important;
        padding-right: 16px !important;
        gap: 12px !important;
    }

    #scene .scene-tabs button {
        min-width: 96px;
        text-align: center !important;
    }

    /* 联系我们页：标题、微信、邮箱、地址等元素全部居中。 */
    #contact > div {
        text-align: center !important;
    }

    #contact > div > div:first-child {
        text-align: center !important;
    }

    #contact > div > div:nth-child(2) {
        justify-items: center !important;
        text-align: center !important;
    }

    #contact > div > div:nth-child(2) > div:first-child {
        width: 100%;
        align-items: center !important;
        text-align: center !important;
    }

    #contact > div > div:nth-child(2) > div:first-child img {
        margin-left: auto !important;
        margin-right: auto !important;
    }

    #contact > div > div:nth-child(2) > div:last-child {
        width: 100%;
        align-items: center !important;
        text-align: center !important;
    }

    #contact > div > div:nth-child(2) > div:last-child > div {
        width: 100%;
        text-align: center !important;
    }

    /* 手机端页脚：公司信息占满一行，两个导航栏目在下方左右并排。 */
    footer .footer-content {
        display: grid !important;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) !important;
        column-gap: 22px !important;
        row-gap: 26px !important;
        align-items: start !important;
    }

    footer .footer-content > .footer-info {
        grid-column: 1 / -1;
    }

    footer .footer-content > .footer-nav {
        min-width: 0;
        display: grid !important;
        align-content: start !important;
        grid-auto-rows: minmax(42px, auto);
    }

    footer .footer-content > .footer-nav > h4 {
        min-height: 26px;
        margin-bottom: 12px !important;
        line-height: 1.6;
    }

    footer .footer-content > .footer-nav > a:not([style*="display: none"]) {
        display: flex !important;
        align-items: center !important;
        min-height: 42px;
        margin-bottom: 0 !important;
        padding: 3px 0;
        line-height: 1.45;
    }

    footer .footer-content > .footer-nav > a[style*="display: none"] {
        display: none !important;
    }
}

@media (max-width: 420px) {
    footer .footer-content {
        column-gap: 14px !important;
    }

    footer .footer-content > .footer-nav > a:not([style*="display: none"]) {
        font-size: 13px !important;
    }
}