body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF4500; text-align: center; }
        h2 { color: #FF6347; border-bottom: 2px solid #FFD700; padding-bottom: 5px; }
        h3 { color: #FF8C00; }
        .nav-mobile { display: none; }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-mobile { display: block; }
            .toggle-nav { background: #FF4500; color: white; padding: 10px; border: none; cursor: pointer; }
        }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; background: #FF4500; color: white; text-decoration: none; margin: 10px 0; border-radius: 5px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }