* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
        }
        
        /* 主导航栏样式 */
        .main-navbar {
            background-color: #1a2b4c;
            color: white;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            color: #4dabf7;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 1.5rem;
        }
        
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: #4dabf7;
        }
        
        /* 文章内容导航栏 */
        .article-navbar {
            background-color: #2c3e5c;
            padding: 0.8rem 0;
            position: sticky;
            top: 70px;
            z-index: 999;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }
        
        .article-nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        
        .article-nav-links {
            display: flex;
            list-style: none;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .article-nav-links li {
            margin: 0 0.8rem;
        }
        
        .article-nav-links a {
            color: #e0e7ff;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            transition: all 0.3s;
            display: flex;
            align-items: center;
        }
        
        .article-nav-links a i {
            margin-right: 6px;
            font-size: 0.9rem;
        }
        
        .article-nav-links a:hover {
            background-color: rgba(77, 171, 247, 0.2);
            color: white;
        }
        
        .article-nav-links a.active {
            background-color: #4dabf7;
            color: white;
        }
        
        /* 主内容容器 */
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        
        /* 标题区域 */
        .header-section {
            background-color: white;
            border: 2px solid #1a2b4c;
            border-radius: 15px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .main-title {
            color: #1a2b4c;
            font-size: 2.2rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid #4dabf7;
            display: inline-block;
            padding-bottom: 0.5rem;
        }
        
        .subtitle {
            color: #555;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
        }
        
        .date-tag {
            display: inline-block;
            background-color: #e9f7fe;
            color: #1a2b4c;
            padding: 0.5rem 1.5rem;
            border-radius: 25px;
            font-weight: 600;
            border: 1px solid #b3e0ff;
        }
        
        /* 图片样式 - 尺寸优化 */
        .image-container {
            margin: 1.5rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .image-container img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s;
            max-height: 400px;
            object-fit: cover;
        }
        
        .image-container:hover img {
            transform: scale(1.03);
        }
        
        .image-caption {
            padding: 0.8rem 1rem;
            background-color: #f0f8ff;
            color: #1a2b4c;
            font-style: italic;
            text-align: center;
            border-top: 1px solid #d1e7ff;
            font-size: 0.9rem;
        }
        
        /* 双图布局 - 专门用于客户互动部分 */
        .dual-image-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
            margin: 1.5rem 0;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .dual-image-grid .image-container {
            margin: 0;
        }
        
        .dual-image-grid .image-container img {
            max-height: 280px;
        }
        
        /* 应用产品图片网格 */
        .image-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .image-grid .image-container {
            margin: 0;
        }
        
        .image-grid .image-container img {
            max-height: 250px;
        }
        
        /* 内容卡片样式 */
        .content-card {
            background-color: white;
            border: 2px solid #1a2b4c;
            border-radius: 15px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            scroll-margin-top: 140px; /* 为导航栏跳转留出空间 */
        }
        
        .card-title {
            color: #1a2b4c;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid #e9f7fe;
            display: flex;
            align-items: center;
        }
        
        .card-title i {
            color: #4dabf7;
            margin-right: 10px;
        }
        
        .card-content {
            color: #444;
            margin-bottom: 1.5rem;
        }
        
        /* 列表样式 */
        .feature-list {
            list-style-type: none;
            margin: 1.5rem 0;
        }
        
        .feature-list li {
            padding: 0.8rem 0;
            border-bottom: 1px dashed #e0e0e0;
            display: flex;
            align-items: flex-start;
        }
        
        .feature-list li:last-child {
            border-bottom: none;
        }
        
        .feature-list i {
            color: #4dabf7;
            margin-right: 10px;
            margin-top: 5px;
        }
        
        /* 高亮区域 */
        .highlight-box {
            background-color: #f0f8ff;
            border-left: 4px solid #4dabf7;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 10px 10px 0;
        }
        
        /* 应用领域标签 */
        .application-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        
        .tag {
            background-color: #e9f7fe;
            color: #1a2b4c;
            padding: 0.6rem 1.2rem;
            border-radius: 20px;
            font-weight: 500;
            border: 1px solid #b3e0ff;
        }
        
        /* 返回顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: #1a2b4c;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            transition: all 0.3s;
            z-index: 99;
        }
        
        .back-to-top:hover {
            background-color: #4dabf7;
            transform: translateY(-3px);
        }
        
        /* 页脚 */
        .footer {
            background-color: #1a2b4c;
            color: white;
            padding: 2.5rem 2rem;
            margin-top: 3rem;
            border-radius: 15px 15px 0 0;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        
        .footer-section {
            flex: 1;
            min-width: 250px;
            margin-bottom: 1.5rem;
        }
        
        .footer-title {
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            color: #4dabf7;
        }
        
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2c3e5c;
            margin-top: 1.5rem;
            color: #b0c4de;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .article-nav-links {
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 5px;
                -webkit-overflow-scrolling: touch;
            }
            
            .article-nav-links::-webkit-scrollbar {
                height: 4px;
            }
            
            .article-nav-links::-webkit-scrollbar-thumb {
                background-color: #4dabf7;
                border-radius: 2px;
            }
            
            .article-nav-links li {
                flex-shrink: 0;
            }
            
            .dual-image-grid, .image-grid {
                grid-template-columns: 1fr;
                max-width: 600px;
            }
            
            .image-container {
                max-width: 700px;
            }
        }
        
        @media (max-width: 768px) {
            .main-navbar {
                flex-direction: column;
                padding: 1rem;
            }
            
            .nav-links {
                margin-top: 1rem;
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .nav-links li {
                margin: 0.5rem;
            }
            
            .article-navbar {
                top: 110px;
            }
            
            .content-card {
                scroll-margin-top: 180px;
            }
            
            .main-title {
                font-size: 1.8rem;
            }
            
            .header-section, .content-card {
                padding: 1.5rem;
            }
            
            .image-container {
                max-width: 100%;
            }
            
            .image-container img {
                max-height: 300px;
            }
            
            .dual-image-grid .image-container img,
            .image-grid .image-container img {
                max-height: 200px;
            }
            
            .footer-content {
                flex-direction: column;
            }
            
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 45px;
                height: 45px;
            }
        }
        
        @media (max-width: 480px) {
            .image-container img {
                max-height: 220px;
            }
            
            .dual-image-grid .image-container img,
            .image-grid .image-container img {
                max-height: 180px;
            }
            
            .main-title {
                font-size: 1.5rem;
            }
            
            .card-title {
                font-size: 1.3rem;
            }
        }