feat: simplify navigation and add RU/EN home and contacts

- simplify main navigation and hide extra menu items
- make home page more sales-focused with updated hero, benefits and fleet teaser
- add RU/EN handling for home and contacts, including SEO defaults
- integrate basic Strapi homepage API client (no breaking changes)
- update contacts page with messenger buttons and dynamic footer year

Made-with: Cursor

components/Benefits.tsx

@@ -1,16 +1,46 @@
 import React from 'react';
+import { useLocation } from 'react-router-dom';
 import { BENEFITS } from '../constants';
 
 const Benefits: React.FC = () => {
+  const location = useLocation();
+  const isEnglish = location.pathname.startsWith('/en');
+
+  const descriptions = BENEFITS.map((item) => {
+    if (!isEnglish) return item.description;
+    switch (item.title) {
+      case 'Надежность':
+        return 'A reliable company ranked among the top 10 in Russia.';
+      case 'Опыт':
+        return 'Experienced engineers with 10+ years of hands-on practice.';
+      case 'Поддержка':
+        return 'Direct communication and support from our specialists 24/7.';
+      case 'Условия':
+        return 'Tailored proposals and flexible terms of cooperation.';
+      default:
+        return item.description;
+    }
+  });
+
   return (
     <div className="py-24 bg-white">
       <div className="container mx-auto px-6">
         <div className="grid grid-cols-1 lg:grid-cols-12 gap-12">
           
           <div className="lg:col-span-4">
-            <span className="text-sm text-gray-500 uppercase tracking-widest mb-2 block">Выбирая нас</span>
-            <h2 className="text-4xl font-bold text-gray-900 mb-6">Вы получаете</h2>
-            <p className="text-gray-500 text-sm">Нас выбирают люди</p>
+            <span className="text-sm text-gray-500 uppercase tracking-widest mb-2 block">
+              {isEnglish ? 'WHO WE WORK WITH' : 'Для кого мы работаем'}
+            </span>
+            <h2 className="text-4xl font-bold text-gray-900 mb-6">
+              {isEnglish
+                ? 'For business and public sector clients'
+                : 'Для бизнеса и государственных заказчиков'}
+            </h2>
+            <p className="text-gray-500 text-sm">
+              {isEnglish
+                ? 'We help developers, industrial companies and public authorities solve complex engineering challenges and take responsibility for the final result.'
+                : 'Мы работаем с девелоперами, промышленными компаниями и государственными организациями, беря на себя сложные инженерные задачи и ответственность за результат.'}
+            </p>
           </div>
 
           <div className="lg:col-span-8 grid grid-cols-1 md:grid-cols-2 gap-x-12 gap-y-16">
@@ -20,7 +50,7 @@ const Benefits: React.FC = () => {
                   <item.icon size={24} />
                 </div>
                 <p className="text-gray-700 leading-relaxed font-medium">
-                  {item.description}
+                  {descriptions[index]}
                 </p>
               </div>
             ))}