body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .mobile-nav { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; }
            body { padding: 10px; }
        }
        h1 { color: #FF6B35; font-size: 2.5em; }
        h2 { color: #FF8C42; border-bottom: 2px solid #FF8C42; padding-bottom: 5px; }
        h3 { color: #FFA366; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #FF6B35; color: white; border-radius: 30px; margin: 15px 0; text-decoration: none; font-weight: bold; }
        .highlight { background: #FFF5E6; padding: 10px; border-radius: 5px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tag { background: #E6E6E6; padding: 5px 10px; border-radius: 15px; margin: 5px; display: inline-block; }