redesign stats: chart + stat cards, add crosslinks between articles

Replace broken health impact chart (mixed units) with stat cards showing
5h avg, 2-3x risk, 3h+ threshold. Keep horizontal bar for percentages.
Add crosslinks at end of addiction article → global overview + France ban.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

content/en/tech-companies-addiction-business-model.md

@@ -100,6 +100,8 @@ While legislation and court decisions are catching up, parents remain the first
 
 The era of treating addictive design as a neutral product feature is ending. What comes next will depend on continued legal pressure, stronger regulation, and informed parenting. Technology created this problem. Accountability, transparency, and engaged families can help solve it.
 
+**Related reading:** See how [countries around the world are responding with new child protection laws](/en/child-protection-laws-2026-global-overview/), and how [France is banning social media for children under 15](/en/france-social-media-ban-under-15/).
+
 {{< faq >}}
 Is social media actually addictive, or is that an exaggeration?
 Research published in peer-reviewed journals including JAMA Psychiatry and studies from institutions like Weill Cornell Medicine show that problematic social media use shares key features with behavioral addictions: cravings, withdrawal symptoms, loss of control, and continued use despite negative consequences. The U.S. Surgeon General has formally warned about the risk of harm to adolescents. While not every user becomes dependent, 47% of teenagers report feeling addicted.