Landing page + phone tracking check service (4 languages, SEO)

Multilingual landing page (Ukrainian/Russian/English/Spanish) for the service of checking phones for spyware and stalkerware. Responsive design, SEO optimization (meta tags, canonical, hreflang), application submission form with payment via invoice, sections "how it works / what we check / prices / FAQ." Plus a series of SEO articles with canonical and syndication. Stack: HTML/CSS/JS, Python (Flask), nginx.