body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #FF5722; }
        h1 { font-size: 2.2em; }
        h2 { font-size: 1.8em; margin-top: 30px; }
        h3 { font-size: 1.5em; }
        .logo { font-size: 2.5em; font-weight: bold; text-align: center; margin: 20px 0; color: #FF9800; }
        nav { background: #FF9800; padding: 10px; text-align: center; }
        nav a { color: white; margin: 0 15px; text-decoration: none; font-weight: bold; }
        .mobile-nav-btn { display: none; background: #FF5722; color: white; border: none; padding: 10px; cursor: pointer; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .btn { display: inline-block; background: #FF5722; color: white; padding: 12px 25px; margin: 10px 0; text-decoration: none; border-radius: 5px; }
        .download-section, .login-section { text-align: center; margin: 30px 0; }
        footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 40px; }
        @media (max-width: 768px) {
            .mobile-nav-btn { display: block; }
            nav { display: none; }
            nav.active { display: block; }
            body { padding: 10px; }
        }