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/blog/modern-methods-civil-engineering.mdx

@@ -1,30 +0,0 @@
----
-title: "Modern Methods in Cable Civil Engineering"
-date: "2024-03-15T10:00:00.000Z"
-excerpt: "Learn more about the latest technologies and methods in modern cable civil engineering, from horizontal directional drilling to trenchless installation techniques."
-featuredImage: "/assets/images/blog/tiefbau.jpg"
-category: "Technology"
-public: true
----
-
-# Modern Methods in Cable Civil Engineering
-
-Cable civil engineering has evolved rapidly in recent years. New technologies enable more efficient and environmentally friendly installation of utility lines.
-
-## Trenchless Installation Techniques
-
-One of the most important methods is **Horizontal Directional Drilling (HDD)**. This method allows pipes to be laid under obstacles such as roads, rivers, or buildings without having to break open the surface.
-
-### Benefits of HDD Drilling:
-- Minimal impact on traffic
-- Protection of the environment and existing vegetation
-- Shorter construction times
-- Lower costs for complex crossings
-
-## Classic Civil Engineering in New Quality
-
-Classic trench construction also benefits from modern machinery and precise planning. By using suction excavators and GPS-supported surveying, we can virtually eliminate damage to existing utility lines.
-
-## Conclusion
-
-The combination of proven craftsmanship and state-of-the-art technology is the key to successful infrastructure projects. At E-TIB, we consistently focus on innovation to deliver the best possible results for our customers.