:root {
            --primary-color: #223777;
            --secondary-color: #000000;
            --accent-color: #3d5a99;
            --text-color: #333333;
            --light-bg: #f8f9fc;
            --border-color: #e1e5f0;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Arial', 'Helvetica Neue', sans-serif;
            line-height: 1.8;
            color: var(--text-color);
            background-color: #ffffff;
        }
        
        .article-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }
        
        .article-header {
            text-align: center;
            margin-bottom: 50px;
            padding-bottom: 30px;
            border-bottom: 3px solid var(--primary-color);
        }
        
        .article-header h1 {
            font-size: 36px;
            color: var(--primary-color);
            margin-bottom: 20px;
            font-weight: 700;
            line-height: 1.3;
        }
        
        .article-meta {
            font-size: 14px;
            color: #666;
            margin-top: 15px;
        }
        
        .intro-section {
            background: linear-gradient(135deg, var(--light-bg) 0%, #ffffff 100%);
            padding: 35px;
            border-left: 5px solid var(--primary-color);
            margin-bottom: 45px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(34, 55, 119, 0.08);
        }
        
        .intro-section p {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-color);
        }
        
        .content-section {
            margin-bottom: 50px;
        }
        
        .content-section h2 {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--border-color);
            font-weight: 700;
        }
        
        .content-section h3 {
            font-size: 22px;
            color: var(--secondary-color);
            margin: 30px 0 20px 0;
            font-weight: 600;
        }
        
        .content-section p {
            font-size: 16px;
            margin-bottom: 20px;
            line-height: 1.85;
        }
        
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 25px 0;
        }
        
        .feature-list li {
            padding: 18px 20px 18px 50px;
            margin-bottom: 15px;
            background-color: var(--light-bg);
            border-radius: 6px;
            position: relative;
            font-size: 16px;
            line-height: 1.8;
            transition: all 0.3s ease;
        }
        
        .feature-list li:hover {
            background-color: #eef1f8;
            transform: translateX(5px);
        }
        
        .feature-list li:before {
            content: "✓";
            position: absolute;
            left: 18px;
            top: 18px;
            color: var(--primary-color);
            font-weight: bold;
            font-size: 20px;
        }
        
        .feature-list li strong {
            color: var(--primary-color);
            font-size: 17px;
        }
        
        .machinery-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            margin: 35px auto;
            display: block;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }
        
        .internal-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px solid transparent;
            transition: border-color 0.3s ease;
        }
        
        .internal-link:hover {
            border-bottom-color: var(--primary-color);
        }
        
        .expertise-box {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
            color: #ffffff;
            padding: 30px;
            border-radius: 8px;
            margin: 40px 0;
            box-shadow: 0 6px 20px rgba(34, 55, 119, 0.2);
        }
        
        .expertise-box h3 {
            color: #ffffff;
            margin-top: 0;
        }
        
        .expertise-box p {
            color: #ffffff;
            margin-bottom: 0;
        }
        
        .cta-box {
            background-color: var(--light-bg);
            border: 2px solid var(--primary-color);
            padding: 35px;
            margin: 45px 0;
            border-radius: 8px;
            text-align: center;
        }
        
        .cta-box h3 {
            color: var(--primary-color);
            margin-bottom: 20px;
            font-size: 24px;
        }
        
        .cta-box p {
            font-size: 17px;
            margin-bottom: 25px;
            color: var(--text-color);
        }
        
        .cta-button {
            display: inline-block;
            background-color: var(--primary-color);
            color: #ffffff;
            padding: 15px 40px;
            text-decoration: none;
            border-radius: 5px;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            margin: 10px;
        }
        
        .cta-button:hover {
            background-color: var(--accent-color);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(34, 55, 119, 0.3);
        }
        
        .contact-section {
            background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
            color: #ffffff;
            padding: 45px;
            border-radius: 8px;
            margin-top: 50px;
            text-align: center;
        }
        
        .contact-section h3 {
            color: #ffffff;
            font-size: 26px;
            margin-bottom: 25px;
        }
        
        .contact-section p {
            font-size: 17px;
            margin-bottom: 30px;
            color: #ffffff;
        }
        
        .contact-info {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 25px;
        }
        
        .contact-item {
            text-align: center;
        }
        
        .contact-item strong {
            display: block;
            font-size: 18px;
            margin-bottom: 10px;
            color: #ffffff;
        }
        
        .contact-item a {
            color: #ffffff;
            text-decoration: none;
            font-size: 17px;
            border-bottom: 2px solid rgba(255, 255, 255, 0.3);
            transition: border-color 0.3s ease;
        }
        
        .contact-item a:hover {
            border-bottom-color: #ffffff;
        }
        
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        
        .stat-item {
            background-color: var(--light-bg);
            padding: 25px;
            border-radius: 8px;
            text-align: center;
            border-top: 4px solid var(--primary-color);
        }
        
        .stat-item h4 {
            color: var(--primary-color);
            font-size: 20px;
            margin-bottom: 10px;
        }
        
        .stat-item p {
            font-size: 15px;
            color: var(--text-color);
            margin-bottom: 0;
        }
        
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 28px;
            }
            
            .content-section h2 {
                font-size: 24px;
            }
            
            .contact-info {
                flex-direction: column;
                gap: 20px;
            }
            
            .cta-button {
                display: block;
                margin: 10px 0;
            }
        }