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: #006400; border-bottom: 2px solid #FFD700; padding-bottom: 5px; }
        h3 { color: #8B4513; }
        .mobile-nav { display: none; background: #000; color: #fff; padding: 10px; text-align: center; }
        .desktop-nav { display: flex; justify-content: space-around; background: #FFD700; padding: 15px; }
        .desktop-nav a { color: #000; text-decoration: none; font-weight: bold; }
        .content-section { margin: 30px 0; }
        .download-btn, .login-btn { display: block; width: 200px; padding: 15px; margin: 20px auto; text-align: center; background: #006400; color: #fff; border-radius: 5px; text-decoration: none; }
        .login-btn { background: #8B4513; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .footer { text-align: center; margin-top: 50px; padding: 20px; background: #333; color: #fff; }
        .tag { display: inline-block; margin: 5px; padding: 5px 10px; background: #FFD700; color: #000; border-radius: 3px; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; }
        }