body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #e74c3c; border-bottom: 3px solid #f39c12; padding-bottom: 10px; }
        h2 { color: #2980b9; margin-top: 30px; }
        h3 { color: #27ae60; }
        .logo { font-size: 2.5em; font-weight: bold; color: #e74c3c; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); }
        .nav { background: #f8f9fa; padding: 15px; display: flex; justify-content: space-between; align-items: center; }
        .mobile-toggle { display: none; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-toggle { display: block; }
            .nav.active .nav-links { display: flex; flex-direction: column; }
        }
        .btn { display: inline-block; padding: 10px 20px; background: #e74c3c; color: white; border-radius: 5px; margin: 10px 0; text-decoration: none; }
        .highlight { background: #fffde7; padding: 5px; border-radius: 3px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        footer { margin-top: 50px; padding: 20px; background: #34495e; color: white; text-align: center; }