Add 404 page, three phone numbers, fix nginx try_files

src/pages/NotFound.jsx

@@ -0,0 +1,27 @@
+import React from 'react'
+import { useLanguage } from '../contexts/LanguageContext.jsx'
+
+export default function NotFound() {
+  const { lang } = useLanguage()
+  return (
+    <div className="min-h-screen bg-slate-900 flex items-center justify-center px-4">
+      <div className="text-center">
+        <div className="text-8xl font-bold text-blue-600 mb-4">404</div>
+        <h1 className="text-2xl font-bold text-white mb-3">
+          {lang === 'ru' ? 'Страница не найдена' : 'Page not found'}
+        </h1>
+        <p className="text-slate-400 mb-8">
+          {lang === 'ru'
+            ? 'Такой страницы не существует или она была удалена'
+            : 'This page does not exist or has been removed'}
+        </p>
+        <a
+          href="/"
+          className="px-6 py-3 bg-blue-600 hover:bg-blue-500 text-white font-semibold rounded-lg transition-colors"
+        >
+          {lang === 'ru' ? 'На главную' : 'Back to home'}
+        </a>
+      </div>
+    </div>
+  )
+}