feat: overhaul competence pages, unify brand colors, and polish site integrity

- Rewrote all 5 competence pages (Kabeltiefbau, Bohrtechnik, Glasfaser, Planung, Vermessung) with factual data from references
- Unified brand colors: replaced toxic neon green with brand-aligned teal (#10a379)
- Fixed ReferencesSlider injection in dynamic MDX pages
- Enhanced Footer with icon parity, improved branding placement, and unified hover effects
- Refined Header with 3D micro-animations and improved dropdown visibility
- Fixed localized tracking API (rewrites for /stats/api/send)
- Resolved ReferenceErrors in InteractiveGermanyMap and Header state management
- Cleaned reference titles and truncated metadata in lists

content/en/glasfaser.mdx

@@ -0,0 +1,60 @@
+---
+title: "Cable Civil Engineering in Telecommunications"
+date: "2024-03-20"
+excerpt: "Future-proof infrastructure through competent cable civil engineering for fiber optic and telecommunications networks."
+layout: "fullBleed"
+---
+
+<HeroSection
+  badge="Core Competency"
+  title="Fiber Optics & Telecommunications"
+  subtitle="Complete infrastructure solutions for future-proof broadband networks (FTTX)"
+  backgroundImage={{ url: '/assets/photos/DSC01129.JPG' }}
+  alignment="center"
+  ctaLabel="Request a project"
+  ctaHref="/en/kontakt"
+/>
+
+<ServiceDetailGrid
+  badge="Service Portfolio"
+  title="Backbone of Digitalization"
+  descriptionParagraphs={[
+    "Fast internet and state-of-the-art telecommunications networks require a **smooth and professional network expansion**.",
+    "With state-of-the-art machinery and specialized assembly teams, E-TIB ensures the highest quality in fiber optic expansion."
+  ]}
+  panels={[
+    {
+      id: "tiefbau",
+      title: "Civil Engineering & Routes",
+      icon: "fiber",
+      fullWidth: false,
+      lists: [
+        [
+          "Production of cable and pipe trenches",
+          "Production of empty conduit routes",
+          "Setting up multi-function enclosures"
+        ]
+      ]
+    },
+    {
+      id: "montage",
+      title: "Cable Pulling & Assembly",
+      icon: "fiber",
+      fullWidth: false,
+      lists: [
+        [
+          "Pulling of TK/FO cables",
+          "Blowing in of fiber optic cables",
+          "Cable assembly TK/FO"
+        ]
+      ]
+    }
+  ]}
+/>
+
+<CallToAction 
+  title="Are you planning an FTTX expansion?" 
+  text="We are happy to advise you on all aspects of FTTX and fiber optic expansion."
+  buttonText="Contact us"
+  buttonLink="/en/kontakt"
+/>