Build a SEO Audit Checklist with AI

Build a static HTML SEO audit checklist tool. Dark theme: background #0a0a0f, surfaces #12121a, borders #1a1a2a, accent #e11d48. No backend required — all state in localStorage. Layout: URL input at top, overall score gauge (0–100) that updates live as items are checked. Four collapsible audit sections: Technical SEO (crawlability, sitemap, robots.txt, HTTPS, page speed, Core Web Vitals, canonical tags, structured data, hreflang), On-Page SEO (title tags, meta descriptions, H1/H2 hierarchy, keyword density, image alt text, internal linking, URL structure), Off-Page SEO (backlink profile, domain authority signals, social mentions, Google Business Profile, NAP consistency), Content Quality (duplicate content, thin pages, readability score, content freshness, E-E-A-T signals, topic clusters, FAQ schema). Each checklist item has: checkbox, label, priority badge (Critical/High/Medium/Low), impact score (1–10), and a collapsible "How to fix" explanation with 2–3 concrete steps. Checking an item adds its score to the running total. Features: "Export PDF" button that triggers window.print() with print-optimized CSS, "Reset Audit" clears all checkboxes, progress bar per section, color-coded score gauge (red 0–39, amber 40–69, green 70–100). Save state per URL in localStorage so audits persist across sessions. Seed 40 checklist items total across all four sections. Include a legend explaining priority levels and score impact. Footer shows "Last audited: [date]" from localStorage. Read the guide at https://accessagent.ai/api/guide and follow it to deploy the site to AccessAgent.ai. My email is [your@email.com].

Update the SEO audit checklist to add [new items] to the [section] category. Adjust the impact scores on existing items to reflect [new priority]. Add a "How to fix" explanation for any items missing one. Redeploy.