.article-container {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        h1, h2, h3, h4 {
            color: #2c3e50;
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            font-weight: 600;
        }
        h1 { font-size: 2.8rem; border-bottom: 3px solid #3498db; padding-bottom: 10px; }
        h2 { font-size: 2.2rem; color: #2980b9; }
        h3 { font-size: 1.8rem; color: #16a085; }
        p { margin-bottom: 1.5em; font-size: 1.1rem; }
        .intro-paragraph {
            font-size: 1.3rem;
            color: #555;
            background-color: #f8f9fa;
            padding: 25px;
            border-left: 5px solid #3498db;
            border-radius: 0 8px 8px 0;
            margin: 30px 0;
        }
        .image-wrapper {
            text-align: center;
            margin: 40px 0;
            background-color: #fdfdfd;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .image-wrapper img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid #eee;
        }
        .image-caption {
            font-style: italic;
            color: #7f8c8d;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 40px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            border-radius: 10px;
            overflow: hidden;
        }
        .comparison-table th, .comparison-table td {
            border: 1px solid #ddd;
            padding: 18px 15px;
            text-align: left;
            vertical-align: top;
        }
        .comparison-table thead {
            background-color: #2c3e50;
            color: white;
        }
        .comparison-table tbody tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        .comparison-table tbody tr:hover {
            background-color: #e8f4fc;
        }
        .feature-box {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border-left: 5px solid #3498db;
        }
        .feature-box h4 {
            margin-top: 0;
            color: #2c3e50;
        }
        .interactive-slider {
            margin: 40px 0;
            padding: 20px;
            background-color: #ecf0f1;
            border-radius: 10px;
            text-align: center;
        }
        .slider-label {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            font-weight: bold;
            color: #2c3e50;
        }
        .slider-container {
            width: 100%;
            margin: 20px 0;
        }
        .slider {
            -webkit-appearance: none;
            width: 100%;
            height: 12px;
            border-radius: 5px;
            background: #bdc3c7;
            outline: none;
        }
        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 25px;
            height: 25px;
            border-radius: 50%;
            background: #3498db;
            cursor: pointer;
            border: 3px solid white;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }
        .slider-value {
            font-size: 1.2rem;
            font-weight: bold;
            color: #2980b9;
            margin-top: 10px;
        }
        .hub-type-visual {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
            margin: 40px 0;
        }
        .hub-card {
            flex: 1;
            min-width: 250px;
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            text-align: center;
            transition: transform 0.3s ease;
            border-top: 4px solid #3498db;
        }
        .hub-card:hover {
            transform: translateY(-10px);
        }
        .hub-card h4 {
            margin-top: 0;
        }
        .icon {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: #3498db;
        }
        .conclusion-box {
            background-color: #2c3e50;
            color: white;
            padding: 30px;
            border-radius: 10px;
            margin: 50px 0;
        }
        .conclusion-box h3 {
            color: white;
            margin-top: 0;
        }
        .key-takeaways {
            background-color: #e8f6f3;
            padding: 25px;
            border-radius: 10px;
            margin: 40px 0;
            border: 2px dashed #16a085;
        }
        .key-takeaways ul {
            padding-left: 20px;
        }
        .key-takeaways li {
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .hub-type-visual {
                flex-direction: column;
            }
            .comparison-table {
                font-size: 0.9rem;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
        }