feat(ui): Enhance homepage responsiveness and layout

This commit introduces several UI improvements to enhance the responsive design and visual appeal of the homepage and main layout.

Key changes include:
- Adjusted the main header to be centered on mobile devices for better alignment.
- Refined the hero section on the homepage with responsive text sizes and improved spacing.
- Modified the "dynamic island" image container to adapt its size and position across different screen sizes.
- Improved typography and layout in the "democratizing tenders" section for better readability.
- Reorganized the contact page into a Next.js route group for better project structure.

app/_components/ApexChart.tsx

@@ -1,9 +1,11 @@
 "use client";
 
+import { ApexOptions } from "apexcharts";
 import dynamic from "next/dynamic";
 import { useEffect, useState } from "react";
-import { ApexOptions } from "apexcharts";
-const ReactApexChart = dynamic(() => import("react-apexcharts"), { ssr: false });
+const ReactApexChart = dynamic(() => import("react-apexcharts"), {
+  ssr: false,
+});
 
 interface ChartState {
   series: {