body { font-family: 'Arial', sans-serif; line-height: 1.6; max-width: 1200px; margin: 0 auto; padding: 20px; color: #333; }
        h1 { color: #FF9933; border-bottom: 3px solid #138808; padding-bottom: 10px; }
        h2 { color: #138808; margin-top: 30px; }
        h3 { color: #FF9933; }
        .nav { background: #138808; color: white; padding: 15px; display: flex; justify-content: space-between; align-items: center; }
        .nav-mobile { display: none; }
        .logo { font-size: 24px; font-weight: bold; text-transform: uppercase; }
        .download-btn { background: #FF9933; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; margin: 15px 0; }
        .login-btn { background: #138808; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; margin: 15px 0; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 40px; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .nav-desktop { display: none; }
            .nav-mobile { display: block; margin-top: 10px; }
        }