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: #4a90e2; margin-top: 30px; }
        h3 { color: #50c878; }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; background: #ff6b35; color: white; text-decoration: none; border-radius: 5px; margin: 10px 0; }
        .nav-bar { background: #333; color: white; padding: 10px; position: relative; }
        .nav-bar a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-toggle { display: none; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-toggle { display: block; position: absolute; right: 20px; top: 10px; }
            .nav-links.active { display: block; }
        }
        img { max-width: 100%; height: auto; margin: 20px 0; }