body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2em; font-weight: bold; color: #FF4500; text-align: center; margin: 20px 0; }
        nav { background: #FFD700; padding: 10px; display: flex; justify-content: space-around; }
        .mobile-nav-btn { display: none; }
        h1 { color: #FF4500; border-bottom: 2px solid #FFD700; }
        h2 { color: #FFA500; }
        h3 { color: #FF8C00; }
        .download-btn, .login-btn { background: #008000; color: white; padding: 10px 20px; margin: 10px 0; display: inline-block; }
        .image-container { text-align: center; margin: 20px 0; }
        img { max-width: 100%; height: auto; }
        footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 30px; }
        @media (max-width: 768px) {
            nav { flex-direction: column; }
            .mobile-nav-btn { display: block; background: #FF4500; color: white; border: none; padding: 10px; margin: 10px auto; }
        }