body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF6B35; text-align: center; }
        h2 { color: #4CAF50; border-bottom: 2px solid #eee; padding-bottom: 5px; }
        h3 { color: #2196F3; }
        .logo { font-size: 2em; font-weight: bold; color: #FF6B35; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); }
        .nav { display: flex; justify-content: space-around; background: #f8f8f8; padding: 10px; margin-bottom: 20px; }
        .nav a { text-decoration: none; color: #333; font-weight: bold; }
        .mobile-nav-btn { display: none; background: #FF6B35; color: white; border: none; padding: 10px; cursor: pointer; }
        .buttons { text-align: center; margin: 20px 0; }
        .btn { display: inline-block; padding: 10px 20px; background: #4CAF50; color: white; text-decoration: none; margin: 0 10px; border-radius: 5px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .footer { text-align: center; margin-top: 40px; padding: 20px; background: #f8f8f8; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; display: none; }
            .nav.active { display: flex; }
            .mobile-nav-btn { display: block; }
        }