Tutorials page rebuilt — sidebar removed, cleaner layout
The tutorials page had a fixed-position sidebar + main column layout that produced a persistent visual bug — sidebar nav items were rendering behind the hero text in some viewports, and the layered positioning made the page hard to read.
Rebuilt /tutorials.html to match the simpler content-page pattern used by the rest of the site: top nav, page hero, six full-width step sections with alternating backgrounds, CTA, footer. All step content (the V1.9.0 we-create-the-bot flow for Step 1, plus Brainwriting, Gmail, Onboarding, Delegating, Scheduling) is preserved verbatim. The "Start with Setup" button still smooth-scrolls to Step 1.
Also fixed footer links: Privacy Policy, Terms of Service, and Refund Policy now point to the right pages instead of dead anchors.