    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            color: #333;
            line-height: 1.6;
            padding: 20px;
            min-height: 100vh;
        }
        
        .container {
            max-width: 960px;
            margin: 0 auto;
        }
        
        header {
            text-align: center;
            margin-bottom: 40px;
            padding: 20px;
            background: #2c3e50;
            color: white;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        
        h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
        .subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            font-weight: 300;
        }
        
        .content-wrapper {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        
        .main-content {
            flex: 2;
            min-width: 300px;
        }
        
        .sidebar {
            flex: 1;
            min-width: 250px;
        }
        
        .card {
            background: white;
            border-radius: 10px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-5px);
        }
        
        h2 {
            color: #2c3e50;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #3498db;
        }
        
        h3 {
            color: #2980b9;
            margin: 15px 0 10px;
        }
        
        p {
            margin-bottom: 15px;
            font-size: 1.05rem;
        }
        
        .question {
            background: #e8f4fc;
            border-left: 5px solid #3498db;
        }
        
        .answer {
            background: #f9f9f9;
        }
        
        .highlight {
            background: #fff8e1;
            padding: 20px;
            border-radius: 8px;
            margin: 20px 0;
            border-left: 5px solid #ffc107;
        }
        
        .tech-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        
        .tech-table th, .tech-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        
        .tech-table th {
            background-color: #f2f6fc;
            color: #2c3e50;
        }
        
        .tech-table tr:hover {
            background-color: #f5f9ff;
        }
        
        .tag {
            display: inline-block;
            background: #3498db;
            color: white;
            padding: 5px 10px;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-right: 8px;
            margin-bottom: 8px;
        }
        
        .icon-box {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 25px 0;
        }
        
        .icon {
            text-align: center;
            padding: 15px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
            flex: 1;
        }
        
        .icon i {
            font-size: 2.5rem;
            color: #3498db;
            margin-bottom: 10px;
        }
        
        footer {
            text-align: center;
            margin-top: 40px;
            padding: 20px;
            color: #7f8c8d;
            font-size: 0.9rem;
        }
        
        @media (max-width: 768px) {
            .content-wrapper {
                flex-direction: column;
            }
            
            h1 {
                font-size: 2rem;
            }
        }
        
        .btn {
            display: inline-block;
            background: #3498db;
            color: white;
            padding: 10px 20px;
            border-radius: 5px;
            text-decoration: none;
            margin-top: 15px;
            transition: background 0.3s;
        }
        
        .btn:hover {
            background: #2980b9;
        }
        
        .timeline {
            position: relative;
            margin: 30px 0;
            padding-left: 30px;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 4px;
            height: 100%;
            background: #3498db;
            border-radius: 2px;
        }
        
        .timeline-item {
            position: relative;
            margin-bottom: 20px;
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -38px;
            top: 5px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: #3498db;
            border: 4px solid white;
            box-shadow: 0 0 0 2px #3498db;
        }
        
        .timeline-year {
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 5px;
        }
        
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        
        .comparison-table th, .comparison-table td {
            padding: 12px 15px;
            text-align: center;
            border: 1px solid #ddd;
        }
        
        .comparison-table th {
            background-color: #2c3e50;
            color: white;
        }
        
        .comparison-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        
        .platform {
            font-weight: bold;
            background-color: #e8f4fc !important;
        }
    </style>
