diff --git a/ospabhost/frontend/node_modules.zip b/ospabhost/frontend/node_modules.zip
new file mode 100644
index 0000000..b793507
Binary files /dev/null and b/ospabhost/frontend/node_modules.zip differ
diff --git a/ospabhost/frontend/src/pages/dashboard/billing.tsx b/ospabhost/frontend/src/pages/dashboard/billing.tsx
index 2916524..02985ff 100644
--- a/ospabhost/frontend/src/pages/dashboard/billing.tsx
+++ b/ospabhost/frontend/src/pages/dashboard/billing.tsx
@@ -37,6 +37,7 @@ const Billing = () => {
   const [balance, setBalance] = useState<number>(0);
   const [payments, setPayments] = useState<CryptoPayment[]>([]);
   const [exchangeRate, setExchangeRate] = useState<number>(95);
+  const [amount, setAmount] = useState<string>('500'); // Default 500 RUB
   const [message, setMessage] = useState('');
   const [messageType, setMessageType] = useState<'success' | 'error'>('success');
 
@@ -151,11 +152,29 @@ const Billing = () => {
       return;
     }
 
+    const amountInRub = parseFloat(amount);
+    if (isNaN(amountInRub) || amountInRub < 50) {
+      showMessage(
+        isEn ? 'Please enter amount at least 50 RUB' : 'Минимальная сумма 50 ₽',
+        'error'
+      );
+      return;
+    }
+
+    const amountInUSDT = (amountInRub / exchangeRate).toFixed(2);
+
     try {
       // Open DePay payment widget
       window.DePayWidgets.Payment({
         integration: DEPAY_INTEGRATION_ID,
         
+        // Amount to pay in USDT
+        amount: {
+          token: 'USDT',
+          blockchain: 'polygon',
+          amount: amountInUSDT,
+        },
+
         // User identifier for callback
         user: {
           id: String(userData.user.id),
@@ -303,6 +322,35 @@ const Billing = () => {
         </div>
       </div>
 
+      {/* Форма ввода суммы */}
+      <div className="mb-6">
+        <label className="block text-sm font-semibold text-gray-700 dark:text-gray-300 mb-2">
+          {isEn ? 'Top-up amount (RUB)' : 'Сумма пополнения (₽)'}
+        </label>
+        <div className="relative">
+          <input
+            type="number"
+            value={amount}
+            onChange={(e) => setAmount(e.target.value)}
+            min="50"
+            step="50"
+            className="w-full px-4 py-3 pr-20 rounded-xl border-2 border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 text-gray-900 dark:text-white focus:border-indigo-500 focus:ring-2 focus:ring-indigo-200 dark:focus:ring-indigo-800 transition-all text-lg font-semibold"
+            placeholder={isEn ? 'Enter amount' : 'Введите сумму'}
+          />
+          <span className="absolute right-4 top-1/2 -translate-y-1/2 text-gray-500 dark:text-gray-400 font-semibold">
+            ₽
+          </span>
+        </div>
+        <div className="flex items-center justify-between mt-2">
+          <p className="text-xs text-gray-500 dark:text-gray-400">
+            {isEn ? 'Minimum: 50 RUB' : 'Минимум: 50 ₽'}
+          </p>
+          <p className="text-sm font-semibold text-indigo-600 dark:text-indigo-400">
+            ≈ {(parseFloat(amount || '0') / exchangeRate).toFixed(4)} USDT
+          </p>
+        </div>
+      </div>
+
       {/* Кнопка оплаты через DePay */}
       <div className="mb-8">
         <button
diff --git a/ospabhost/frontend/vite.config.ts b/ospabhost/frontend/vite.config.ts
index 6236196..dc7e3e0 100644
--- a/ospabhost/frontend/vite.config.ts
+++ b/ospabhost/frontend/vite.config.ts
@@ -1,12 +1,59 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
-import { copyFileSync } from 'fs'
+import { copyFileSync, writeFileSync } from 'fs'
 import { dirname, resolve } from 'path'
 import { fileURLToPath } from 'url'
 
 const __filename = fileURLToPath(import.meta.url)
 const __dirname = dirname(__filename)
 
+// Функция для генерации sitemap.xml
+function generateSitemap() {
+  const baseUrl = 'https://ospab.host';
+  const lastmod = new Date().toISOString().split('T')[0];
+
+  const pages = [
+    { loc: '/', priority: '1.0', changefreq: 'weekly' },
+    { loc: '/about', priority: '0.9', changefreq: 'monthly' },
+    { loc: '/login', priority: '0.7', changefreq: 'monthly' },
+    { loc: '/register', priority: '0.8', changefreq: 'monthly' },
+    { loc: '/blog', priority: '0.85', changefreq: 'daily' },
+    { loc: '/tariffs', priority: '0.9', changefreq: 'weekly' },
+    { loc: '/s3plans', priority: '0.9', changefreq: 'weekly' },
+    { loc: '/terms', priority: '0.5', changefreq: 'yearly' },
+    { loc: '/privacy', priority: '0.5', changefreq: 'yearly' },
+  ];
+
+  let xml = '<?xml version="1.0" encoding="UTF-8"?>\n';
+  xml += '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">\n';
+
+  for (const page of pages) {
+    // Русская версия (без префикса)
+    xml += '  <url>\n';
+    xml += `    <loc>${baseUrl}${page.loc}</loc>\n`;
+    xml += `    <lastmod>${lastmod}</lastmod>\n`;
+    xml += `    <priority>${page.priority}</priority>\n`;
+    xml += `    <changefreq>${page.changefreq}</changefreq>\n`;
+    xml += `    <xhtml:link rel="alternate" hreflang="ru" href="${baseUrl}${page.loc}"/>\n`;
+    xml += `    <xhtml:link rel="alternate" hreflang="en" href="${baseUrl}/en${page.loc}"/>\n`;
+    xml += '  </url>\n';
+
+    // Английская версия (с префиксом /en)
+    xml += '  <url>\n';
+    xml += `    <loc>${baseUrl}/en${page.loc}</loc>\n`;
+    xml += `    <lastmod>${lastmod}</lastmod>\n`;
+    xml += `    <priority>${page.priority}</priority>\n`;
+    xml += `    <changefreq>${page.changefreq}</changefreq>\n`;
+    xml += `    <xhtml:link rel="alternate" hreflang="ru" href="${baseUrl}${page.loc}"/>\n`;
+    xml += `    <xhtml:link rel="alternate" hreflang="en" href="${baseUrl}/en${page.loc}"/>\n`;
+    xml += '  </url>\n';
+  }
+
+  xml += '</urlset>';
+
+  return xml;
+}
+
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [
@@ -25,6 +72,23 @@ export default defineConfig({
           console.error('❌ Ошибка копирования service worker:', error)
         }
       }
+    },
+    {
+      name: 'generate-sitemap',
+      writeBundle() {
+        // Генерируем sitemap.xml при сборке
+        try {
+          const sitemapContent = generateSitemap();
+          writeFileSync(
+            resolve(__dirname, 'dist/sitemap.xml'),
+            sitemapContent,
+            'utf-8'
+          );
+          console.log('✅ Sitemap.xml сгенерирован в dist/');
+        } catch (error) {
+          console.error('❌ Ошибка генерации sitemap:', error);
+        }
+      }
     }
   ],
   build: {
diff --git a/ospabhost/nginx.conf b/ospabhost/nginx.conf
index 36e39d7..65a44d8 100644
--- a/ospabhost/nginx.conf
+++ b/ospabhost/nginx.conf
@@ -168,13 +168,34 @@ server {
     # Robots.txt
     location = /robots.txt {
         access_log off;
-        try_files $uri =404;
+        try_files $uri @backend_robots;
     }
     
-    # Sitemap
+    # Sitemap - try static first, then backend
     location = /sitemap.xml {
         access_log off;
-        try_files $uri =404;
+        add_header Content-Type application/xml;
+        try_files $uri @backend_sitemap;
+    }
+    
+    # Fallback to backend for robots.txt
+    location @backend_robots {
+        proxy_pass https://backend_api/robots.txt;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+    
+    # Fallback to backend for sitemap
+    location @backend_sitemap {
+        proxy_pass https://backend_api/sitemap.xml;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
     }
     
     # Custom error page handler