refactor: update sections for improved layout and styling

- Revamp Contact, FinalCta, Hero, Hours, SalonPromise, Services, SiteHeader, Trust components to use a new v2 design system.
- Enhance responsiveness and accessibility across sections.
- Introduce new styles for better visual hierarchy and user experience.
- Integrate review data into Trust section and update site content structure.

src/components/sections/FinalCta.astro

@@ -2,12 +2,54 @@
 import { siteContent } from "@/content/site-content"
 ---
 
-<section class="final-cta" aria-labelledby="final-cta-title">
-  <p class="eyebrow">Bereit für den nächsten Schnitt?</p>
+<section class="final-cta-v2" aria-labelledby="final-cta-title">
+  <p class="eyebrow-v2">Bereit für den nächsten Schnitt?</p>
   <h2 id="final-cta-title">Kurz anrufen, Termin abstimmen, vorbeikommen.</h2>
-  <div class="final-cta-actions">
-    <a class="button-link button-link--light" href={siteContent.cta.primary.href}>
+  <div class="final-cta-v2__actions">
+    <a class="button-link-v2 button-link-v2--light" href={siteContent.cta.primary.href}>
       {siteContent.business.phone.display}
     </a>
   </div>
 </section>
+
+<style>
+  .final-cta-v2 {
+    display: grid;
+    gap: 1.75rem;
+    justify-items: start;
+    background: var(--v2-surface-dark);
+    color: var(--v2-hero-ink);
+    padding: clamp(5rem, 10vw, 9rem) clamp(1rem, 5vw, 5rem);
+    position: relative;
+    overflow: hidden;
+  }
+
+  .final-cta-v2::before {
+    content: "";
+    position: absolute;
+    inset: 0;
+    background:
+      radial-gradient(ellipse 60% 40% at 80% 120%, color-mix(in oklch, var(--v2-primary) 35%, transparent) 0%, transparent 70%);
+    pointer-events: none;
+  }
+
+  .final-cta-v2 .eyebrow-v2 {
+    color: var(--v2-accent);
+    position: relative;
+    z-index: 2;
+  }
+
+  .final-cta-v2 h2 {
+    max-width: 14ch;
+    position: relative;
+    z-index: 2;
+    color: var(--v2-hero-ink);
+  }
+
+  .final-cta-v2__actions {
+    border-top: 1.5px solid color-mix(in oklch, var(--v2-hero-ink) 28%, transparent);
+    padding-top: 1.5rem;
+    position: relative;
+    z-index: 2;
+  }
+</style>