<style>
        /* Estilos generales */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        /* Encabezado */
        header {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            padding: 40px 0;
            text-align: center;
            border-radius: 0 0 10px 10px;
            margin-bottom: 30px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        
        h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }
        
        .subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto;
        }
        
        /* Secciones */
        section {
            background-color: white;
            border-radius: 8px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        
        h2 {
            color: #1e3c72;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eaeef5;
        }
        
        h3 {
            color: #2a5298;
            margin: 25px 0 15px;
        }
        
        p {
            margin-bottom: 15px;
        }
        
        /* Lista de actividades */
        .actividades {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        
        .actividad {
            background: linear-gradient(145deg, #f9fbfd 0%, #eef2f7 100%);
            border-radius: 8px;
            padding: 20px;
            border-left: 4px solid #2a5298;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .actividad:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .actividad h4 {
            color: #1e3c72;
            margin-bottom: 10px;
            font-size: 1.2rem;
        }
        
        /* Ejemplos */
        .ejemplos {
            background-color: #f0f7ff;
            border-left: 4px solid #4a90e2;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        
        .ejemplos h4 {
            color: #1e3c72;
            margin-bottom: 10px;
        }
        
        /* Tabla de actividades */
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        
        th, td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #eaeef5;
        }
        
        th {
            background-color: #2a5298;
            color: white;
            font-weight: 600;
        }
        
        tr:nth-child(even) {
            background-color: #f9fbfd;
        }
        
        tr:hover {
            background-color: #f0f7ff;
        }
        
        /* Footer */
        footer {
            text-align: center;
            padding: 20px;
            color: #666;
            font-size: 0.9rem;
            margin-top: 50px;
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            
            .actividades {
                grid-template-columns: 1fr;
            }
            
            section {
                padding: 20px;
            }
        }
    </style>
