Integrate Inga's content as an OC page (inga.html) — drop the separate subdomain

Build Inga's coaching practice as a native OC page in the OC design system: hero,
familiar-symptoms, approach + outcomes, "where to start" service cards, deeper-
engagement principles, social-impact callout, dark "in practice" band (count-up
stats + quotes), about essay, and a CTA wired to OC's real Cal.com booking. New
scoped inga.css for the components OC lacked. Repoint "More about Inga" from the
inga.opencommunications.consulting subdomain to the internal page.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

index.html

@@ -171,7 +171,7 @@
         <div class="person">
           <p class="person-name">Inga Michaelsen</p>
           <p>A Professional Certified Coach (PCC) and Team Coach (ACTC) with the International Coaching Federation, Inga designs experiential leadership work at Royal Roads University. Her depth in trauma-informed, systems-aware coaching is the backbone of how we work.</p>
-          <p><a href="https://inga.opencommunications.consulting" target="_blank" rel="noopener">More about Inga →</a></p>
+          <p><a href="inga.html">More about Inga →</a></p>
         </div>
       </div>
       <blockquote class="creed">The rigor to build something that works. The soul to make people actually want to use it.</blockquote>