feat: Passwordless cross-device authentication

- Arkitektur: docs/auth/passwordless-architecture.md
- Backend: iom/quixzoom-auth-service/ (FastAPI + Redis)
- Webb: quixzoom-market-pages/se/login/ (QR-kod + polling)
- App: iom/quixzoom-app/src/features/auth/ (push + deep links)

Flöde: QR-kod → app-godkännande → webb-inloggad

landvex-site/insights/index.html

@@ -11,7 +11,7 @@ body { font-family: -apple-system, BlinkMacSystemFont, 'Inter', sans-serif; line
 h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 0.5em; }
 .subtitle { color: #666; font-size: 1.2rem; margin-bottom: 3em; }
 .article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 2em; }
-.article-card { border: 1px solid #eee; border-radius: 8px; padding: 24px; transition: box-shadow 0.2s; }
+.article-card { border: 1px solid #eee; border-radius: var(--radius-md); padding: 24px; transition: box-shadow 0.2s; }
 .article-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
 .article-card h2 { font-size: 1.3rem; margin-top: 0; }
 .article-card a { color: #1a1a1a; text-decoration: none; }