diff --git a/app/api/search/route.js b/app/api/search/route.js
new file mode 100644
index 0000000..b13136b
--- /dev/null
+++ b/app/api/search/route.js
@@ -0,0 +1,28 @@
+import { NextResponse } from 'next/server';
+import { listArticles } from '@/lib/engine';
+
+// GET /api/search?q=foo — простой поиск по title/excerpt/tags
+export async function GET(req) {
+  const q = (req.nextUrl.searchParams.get('q') || '').trim().toLowerCase();
+  if (!q || q.length < 2) return NextResponse.json([]);
+
+  try {
+    const all = await listArticles({ limit: 100 });
+    const tokens = q.split(/\s+/).filter(Boolean);
+
+    const matched = all
+      .map(a => {
+        const haystack = [a.title, a.excerpt, (a.tags || []).join(' ')]
+          .filter(Boolean).join(' ').toLowerCase();
+        const score = tokens.reduce((acc, t) => acc + (haystack.includes(t) ? 1 : 0), 0);
+        return { ...a, score };
+      })
+      .filter(a => a.score > 0)
+      .sort((a, b) => b.score - a.score)
+      .slice(0, 12);
+
+    return NextResponse.json(matched);
+  } catch (err) {
+    return NextResponse.json({ error: err.message }, { status: 500 });
+  }
+}
diff --git a/app/blog/[slug]/page.js b/app/blog/[slug]/page.js
index 749fac2..b4fa6eb 100644
--- a/app/blog/[slug]/page.js
+++ b/app/blog/[slug]/page.js
@@ -2,7 +2,11 @@ import { notFound } from 'next/navigation';
 import Link from 'next/link';
 import Header from '@/components/Header';
 import Footer from '@/components/Footer';
-import { getArticle } from '@/lib/engine';
+import ReadingProgress from '@/components/ReadingProgress';
+import ScrollToTop from '@/components/ScrollToTop';
+import ShareButton from '@/components/ShareButton';
+import ArticleCard from '@/components/ArticleCard';
+import { getArticle, listArticles } from '@/lib/engine';
 import { renderMarkdown, formatDate } from '@/lib/markdown';
 import { Clock, ArrowLeft } from 'lucide-react';
 
@@ -21,70 +25,106 @@ export async function generateMetadata({ params }) {
       type: 'article',
       publishedTime: article.published_at,
       tags: article.tags || [],
+      images: article.cover_url ? [{ url: article.cover_url }] : undefined,
     },
   };
 }
 
+async function loadRelated(article) {
+  // ищем статьи с пересекающимися тегами, исключая текущую
+  if (!article.tags?.length) return [];
+  const all = await listArticles({ limit: 20 });
+  const scored = all
+    .filter(a => a.id !== article.id)
+    .map(a => ({
+      ...a,
+      score: (a.tags || []).filter(t => article.tags.includes(t)).length,
+    }))
+    .filter(a => a.score > 0)
+    .sort((a, b) => b.score - a.score)
+    .slice(0, 3);
+  return scored;
+}
+
 export default async function ArticlePage({ params }) {
   const { slug } = await params;
   const article = await getArticle(slug);
   if (!article) notFound();
 
+  const related = await loadRelated(article);
   const contentWithoutH1 = article.content.replace(/^#\s+.+$/m, '').trim();
   const html = renderMarkdown(contentWithoutH1);
 
   return (
     <>
       <Header />
-      <article className="container-narrow pt-10 pb-16">
-        <Link href="/" className="btn btn-ghost text-sm mb-6 -ml-2">
+      <ReadingProgress />
+
+      <article className="container-narrow pt-6 sm:pt-10 pb-12">
+        <Link href="/" className="btn btn-ghost text-sm mb-4 sm:mb-6 -ml-2">
           <ArrowLeft className="w-4 h-4" /> Все статьи
         </Link>
 
-        <div className="flex flex-wrap items-center gap-2 mb-4">
+        <div className="flex flex-wrap items-center gap-2 mb-3">
           {(article.tags || []).map(t => (
             <Link key={t} href={`/tag/${encodeURIComponent(t)}`} className="tag">#{t}</Link>
           ))}
         </div>
 
-        <h1 className="font-serif text-3xl sm:text-5xl font-bold leading-tight mb-5 tracking-tight ink">
+        <h1 className="font-serif text-2xl sm:text-4xl lg:text-5xl font-bold leading-[1.15] mb-4 sm:mb-5 tracking-tight ink">
           {article.title}
         </h1>
 
-        <div className="flex items-center gap-4 text-sm mute pb-8 mb-8 border-b-soft">
+        <div className="flex items-center flex-wrap gap-x-3 gap-y-2 text-xs sm:text-sm mute pb-6 sm:pb-8 mb-6 sm:mb-8 border-b-soft">
           <span>{article.author}</span>
-          <span>·</span>
+          <span aria-hidden>·</span>
           <span>{formatDate(article.published_at)}</span>
           {article.reading_time && (
             <>
-              <span>·</span>
+              <span aria-hidden>·</span>
               <span className="inline-flex items-center gap-1">
                 <Clock className="w-3.5 h-3.5" /> {article.reading_time} мин чтения
               </span>
             </>
           )}
+          <span className="ml-auto">
+            <ShareButton title={article.title} />
+          </span>
         </div>
 
         {article.cover_url && (
-          <div className="mb-10 -mx-4 sm:mx-0">
+          <div className="mb-8 sm:mb-10 -mx-4 sm:mx-0">
             <img
               src={article.cover_url}
               alt={article.title}
-              className="w-full rounded-xl"
+              className="w-full sm:rounded-xl"
               style={{ aspectRatio: '16/9', objectFit: 'cover' }}
             />
           </div>
         )}
 
         <div
-          className="prose prose-lg max-w-none font-serif prose-headings:font-sans"
+          className="prose prose-base sm:prose-lg max-w-none font-serif prose-headings:font-sans prose-p:leading-relaxed prose-img:rounded-xl"
           dangerouslySetInnerHTML={{ __html: html }}
         />
 
-        <div className="mt-16 pt-8 border-t-soft text-center">
+        <div className="mt-12 pt-6 border-t-soft text-center">
           <p className="mute text-sm">Статья сгенерирована ИИ под редакторским присмотром.</p>
         </div>
       </article>
+
+      {related.length > 0 && (
+        <section className="container-wide pb-12 sm:pb-16">
+          <h2 className="text-xs sm:text-sm font-medium uppercase tracking-widest mute mb-4 sm:mb-5">
+            Похожее
+          </h2>
+          <div className="grid sm:grid-cols-2 lg:grid-cols-3 gap-4 sm:gap-5">
+            {related.map(a => <ArticleCard key={a.id} article={a} />)}
+          </div>
+        </section>
+      )}
+
+      <ScrollToTop />
       <Footer />
     </>
   );
diff --git a/app/globals.css b/app/globals.css
index 7dd9c8a..1c54faa 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -4,15 +4,15 @@
 
 /* === Theme tokens === */
 :root {
-  --bg: 250 250 249;            /* почти белый, тёплый */
-  --surface: 255 255 255;        /* карточки */
-  --surface-2: 245 245 244;      /* приглушённый фон */
+  --bg: 250 250 249;
+  --surface: 255 255 255;
+  --surface-2: 245 245 244;
   --border: 231 229 228;
-  --ink: 28 25 23;               /* основной текст */
-  --mute: 120 113 108;           /* приглушённый текст */
-  --accent: 16 185 129;          /* emerald-500 */
-  --accent-2: 5 150 105;         /* emerald-600 */
-  --accent-soft: 209 250 229;    /* emerald-100 */
+  --ink: 28 25 23;
+  --mute: 120 113 108;
+  --accent: 16 185 129;
+  --accent-2: 5 150 105;
+  --accent-soft: 209 250 229;
 }
 
 .dark {
@@ -31,28 +31,39 @@
   html {
     background: rgb(var(--bg));
     color: rgb(var(--ink));
+    scroll-behavior: smooth;
+    /* лучше для мобильных WebKit */
+    -webkit-text-size-adjust: 100%;
+    -webkit-tap-highlight-color: transparent;
+  }
+  body {
+    @apply font-sans antialiased;
+    /* safe areas на iOS */
+    padding-left: env(safe-area-inset-left);
+    padding-right: env(safe-area-inset-right);
   }
-  body { @apply font-sans antialiased; }
   ::selection { background: rgb(var(--accent) / 0.25); }
+
+  /* tap target минимум 44px для кнопок и ссылок в навигации/действиях */
+  button, a.btn {
+    min-height: 40px;
+  }
+
+  /* плавный скролл к якорям с учётом sticky header */
+  :where(h1, h2, h3, h4, [id]) {
+    scroll-margin-top: 80px;
+  }
 }
 
 @layer components {
   .btn {
     @apply inline-flex items-center justify-center gap-2 px-4 py-2 rounded-lg font-medium transition-all disabled:opacity-50 disabled:cursor-not-allowed;
   }
-  .btn-primary {
-    background: rgb(var(--accent));
-    color: white;
-  }
+  .btn-primary { background: rgb(var(--accent)); color: white; }
   .btn-primary:hover { background: rgb(var(--accent-2)); }
 
-  .btn-ghost {
-    color: rgb(var(--mute));
-  }
-  .btn-ghost:hover {
-    background: rgb(var(--surface-2));
-    color: rgb(var(--ink));
-  }
+  .btn-ghost { color: rgb(var(--mute)); }
+  .btn-ghost:hover { background: rgb(var(--surface-2)); color: rgb(var(--ink)); }
 
   .container-narrow { @apply max-w-3xl mx-auto px-4; }
   .container-wide { @apply max-w-6xl mx-auto px-4; }
@@ -70,10 +81,15 @@
   .dark .article-card:hover {
     box-shadow: 0 10px 25px -10px rgb(0 0 0 / 0.5);
   }
+  /* на мобилке hover-эффект transform не нужен (тач) */
+  @media (hover: none) {
+    .article-card:hover { transform: none; box-shadow: none; }
+    .article-card:active { transform: scale(0.99); }
+  }
 
   .tag {
     display: inline-block;
-    @apply text-xs px-2.5 py-1 rounded-full transition-colors;
+    @apply text-xs px-2.5 py-1 rounded-full transition-colors whitespace-nowrap;
     background: rgb(var(--surface-2));
     color: rgb(var(--mute));
   }
@@ -91,3 +107,13 @@
   .border-b-soft { border-bottom: 1px solid rgb(var(--border)); }
   .border-t-soft { border-top: 1px solid rgb(var(--border)); }
 }
+
+/* Уважаем системную настройку "меньше анимаций" */
+@media (prefers-reduced-motion: reduce) {
+  html { scroll-behavior: auto; }
+  *, *::before, *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
+}
diff --git a/app/layout.js b/app/layout.js
index 7b5e54c..888e3d8 100644
--- a/app/layout.js
+++ b/app/layout.js
@@ -12,9 +12,22 @@ export const metadata = {
     locale: 'ru_RU',
     siteName: 'ZeroPost',
   },
+  alternates: {
+    types: { 'application/rss+xml': '/rss.xml' },
+  },
+};
+
+export const viewport = {
+  width: 'device-width',
+  initialScale: 1,
+  maximumScale: 5,
+  themeColor: [
+    { media: '(prefers-color-scheme: light)', color: '#fafaf9' },
+    { media: '(prefers-color-scheme: dark)', color: '#0a0a0a' },
+  ],
+  viewportFit: 'cover',
 };
 
-// Защита от FOUC: ставим тему до первого рендера
 const themeInitScript = `
 (function() {
   try {
@@ -36,6 +49,7 @@ export default function RootLayout({ children }) {
           href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Source+Serif+Pro:ital,wght@0,400;0,600;0,700;1,400&display=swap"
           rel="stylesheet"
         />
+        <link rel="alternate" type="application/rss+xml" title="ZeroPost RSS" href="/rss.xml" />
       </head>
       <body>{children}</body>
     </html>
diff --git a/app/page.js b/app/page.js
index 37e47b7..a8e071d 100644
--- a/app/page.js
+++ b/app/page.js
@@ -33,7 +33,7 @@ export default async function HomePage() {
       {/* Hero */}
       <section className="relative">
         <HeroBackground />
-        <div className="container-wide pt-16 pb-12 sm:pt-24 sm:pb-20 relative">
+        <div className="container-wide pt-12 pb-12 sm:pt-24 sm:pb-20 relative">
           <Reveal>
             <div className="max-w-3xl reveal">
               <div
@@ -43,18 +43,18 @@ export default async function HomePage() {
                 <Sparkles className="w-3.5 h-3.5" />
                 Блог, который ведёт ИИ
               </div>
-              <h1 className="text-4xl sm:text-6xl lg:text-7xl font-bold tracking-tight leading-[1.05] mb-5 ink">
+              <h1 className="text-[2.5rem] sm:text-6xl lg:text-7xl font-bold tracking-tight leading-[1.05] mb-5 ink">
                 Практический ИИ.<br />
                 <span className="mute">Без воды и хайпа.</span>
               </h1>
-              <p className="text-lg sm:text-xl mute mb-8 max-w-2xl leading-relaxed">
+              <p className="text-base sm:text-xl mute mb-8 max-w-2xl leading-relaxed">
                 Промпты, кейсы, инструменты и разборы. Эксперимент: блог, который ведёт ИИ — а человек только следит за курсом.
               </p>
-              <div className="flex flex-wrap gap-3">
-                <Link href="#articles" className="btn btn-primary">
+              <div className="flex flex-col sm:flex-row gap-3">
+                <Link href="#articles" className="btn btn-primary w-full sm:w-auto">
                   Читать статьи <ArrowRight className="w-4 h-4" />
                 </Link>
-                <Link href="/about" className="btn btn-ghost">
+                <Link href="/about" className="btn btn-ghost w-full sm:w-auto">
                   Как это работает
                 </Link>
               </div>
diff --git a/app/robots.js b/app/robots.js
new file mode 100644
index 0000000..82479f5
--- /dev/null
+++ b/app/robots.js
@@ -0,0 +1,9 @@
+export default function robots() {
+  return {
+    rules: [
+      { userAgent: '*', allow: '/', disallow: ['/api/'] },
+    ],
+    sitemap: 'https://zeropost.ru/sitemap.xml',
+    host: 'https://zeropost.ru',
+  };
+}
diff --git a/app/rss.xml/route.js b/app/rss.xml/route.js
new file mode 100644
index 0000000..c37ed32
--- /dev/null
+++ b/app/rss.xml/route.js
@@ -0,0 +1,44 @@
+import { listArticles } from '@/lib/engine';
+
+const SITE = 'https://zeropost.ru';
+
+function escapeXml(s = '') {
+  return s
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&apos;');
+}
+
+export async function GET() {
+  const articles = await listArticles({ limit: 50 });
+  const items = articles.map(a => `
+    <item>
+      <title>${escapeXml(a.title)}</title>
+      <link>${SITE}/blog/${a.slug}</link>
+      <guid isPermaLink="true">${SITE}/blog/${a.slug}</guid>
+      <pubDate>${new Date(a.published_at).toUTCString()}</pubDate>
+      <description>${escapeXml(a.excerpt || '')}</description>
+      ${(a.tags || []).map(t => `<category>${escapeXml(t)}</category>`).join('')}
+    </item>`).join('');
+
+  const xml = `<?xml version="1.0" encoding="UTF-8"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <title>ZeroPost</title>
+    <link>${SITE}</link>
+    <description>Блог про практическое применение ИИ</description>
+    <language>ru</language>
+    <atom:link href="${SITE}/rss.xml" rel="self" type="application/rss+xml"/>
+    ${items}
+  </channel>
+</rss>`;
+
+  return new Response(xml, {
+    headers: {
+      'Content-Type': 'application/rss+xml; charset=utf-8',
+      'Cache-Control': 'public, max-age=600, s-maxage=600',
+    },
+  });
+}
diff --git a/app/sitemap.js b/app/sitemap.js
new file mode 100644
index 0000000..10d7e6b
--- /dev/null
+++ b/app/sitemap.js
@@ -0,0 +1,31 @@
+import { listArticles, listTags } from '@/lib/engine';
+
+const SITE = 'https://zeropost.ru';
+
+export default async function sitemap() {
+  const [articles, tags] = await Promise.all([
+    listArticles({ limit: 200 }).catch(() => []),
+    listTags().catch(() => []),
+  ]);
+
+  const staticPages = [
+    { url: `${SITE}/`, lastModified: new Date(), changeFrequency: 'daily', priority: 1 },
+    { url: `${SITE}/about`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.5 },
+  ];
+
+  const articlePages = articles.map(a => ({
+    url: `${SITE}/blog/${a.slug}`,
+    lastModified: a.published_at ? new Date(a.published_at) : new Date(),
+    changeFrequency: 'monthly',
+    priority: 0.8,
+  }));
+
+  const tagPages = tags.map(t => ({
+    url: `${SITE}/tag/${encodeURIComponent(t.tag)}`,
+    lastModified: new Date(),
+    changeFrequency: 'weekly',
+    priority: 0.6,
+  }));
+
+  return [...staticPages, ...articlePages, ...tagPages];
+}
diff --git a/components/ArticleCard.js b/components/ArticleCard.js
index 63eda95..6db796d 100644
--- a/components/ArticleCard.js
+++ b/components/ArticleCard.js
@@ -4,10 +4,9 @@ import { Clock } from 'lucide-react';
 
 function imageUrl(article) {
   if (!article.cover_url) return null;
-  return article.cover_url; // /uploads/... проксируется через next.config rewrites
+  return article.cover_url;
 }
 
-// Детерминированный градиент-фоллбек, чтобы у каждой статьи был свой узнаваемый цвет
 function gradientFor(article) {
   const seed = (article.id || 0) * 31 + (article.title?.length || 0);
   const variants = [
@@ -21,14 +20,13 @@ function gradientFor(article) {
   return variants[seed % variants.length];
 }
 
-function CoverPlaceholder({ article, featured = false }) {
+function CoverPlaceholder({ article, featured = false, className = '' }) {
   const gradient = gradientFor(article);
   return (
     <div
-      className={`relative overflow-hidden ${featured ? 'aspect-[16/8]' : 'aspect-[16/9]'} rounded-xl`}
+      className={`relative overflow-hidden ${featured ? 'aspect-[16/9] sm:aspect-[16/10]' : 'aspect-[16/9]'} rounded-xl ${className}`}
       style={{ background: gradient }}
     >
-      {/* геометрические декорации */}
       <div className="absolute -top-10 -right-10 w-40 h-40 rounded-full opacity-30" style={{ background: 'rgba(255,255,255,0.3)' }} />
       <div className="absolute -bottom-12 -left-8 w-32 h-32 rounded-full opacity-20" style={{ background: 'rgba(0,0,0,0.2)' }} />
       <div className="absolute inset-0 flex items-end p-4">
@@ -46,25 +44,31 @@ export default function ArticleCard({ article, featured = false }) {
   if (featured) {
     return (
       <Link href={`/blog/${article.slug}`} className="article-card block group overflow-hidden p-0">
-        <div className="grid sm:grid-cols-2 gap-0">
-          <div className="p-4 sm:p-5">
+        <div className="flex flex-col sm:grid sm:grid-cols-5 sm:gap-0">
+          {/* Image: full-width на мобиле, 2/5 на десктопе */}
+          <div className="p-3 sm:p-5 sm:col-span-2">
             {img ? (
-              <img src={img} alt={article.title} className="w-full aspect-[16/9] object-cover rounded-xl" loading="eager" />
+              <img
+                src={img}
+                alt={article.title}
+                className="w-full aspect-[16/9] sm:aspect-square object-cover rounded-xl"
+                loading="eager"
+              />
             ) : (
-              <CoverPlaceholder article={article} featured />
+              <CoverPlaceholder article={article} className="sm:aspect-square" />
             )}
           </div>
-          <div className="p-6 sm:p-8 flex flex-col justify-center">
+          <div className="p-5 sm:p-8 sm:col-span-3 flex flex-col justify-center">
             <div className="flex flex-wrap items-center gap-2 mb-3">
               {(article.tags || []).slice(0, 3).map(t => (
                 <span key={t} className="tag">#{t}</span>
               ))}
             </div>
-            <h2 className="text-2xl sm:text-3xl font-bold mb-3 leading-tight ink group-hover:accent transition-colors">
+            <h2 className="text-xl sm:text-3xl font-bold mb-3 leading-tight ink group-hover:accent transition-colors">
               {article.title}
             </h2>
             {article.excerpt && (
-              <p className="mute leading-relaxed line-clamp-3 mb-4">
+              <p className="mute text-sm sm:text-base leading-relaxed line-clamp-3 mb-4">
                 {article.excerpt}
               </p>
             )}
@@ -91,13 +95,13 @@ export default function ArticleCard({ article, featured = false }) {
           <CoverPlaceholder article={article} />
         )}
       </div>
-      <div className="p-5 pt-2">
+      <div className="p-4 sm:p-5 pt-2">
         <div className="flex flex-wrap items-center gap-2 mb-2">
           {(article.tags || []).slice(0, 2).map(t => (
             <span key={t} className="tag">#{t}</span>
           ))}
         </div>
-        <h3 className="text-lg font-semibold mb-2 ink group-hover:accent transition-colors leading-snug line-clamp-2">
+        <h3 className="text-base sm:text-lg font-semibold mb-2 ink group-hover:accent transition-colors leading-snug line-clamp-2">
           {article.title}
         </h3>
         {article.excerpt && (
diff --git a/components/Header.js b/components/Header.js
index e4a14fb..82113c9 100644
--- a/components/Header.js
+++ b/components/Header.js
@@ -1,25 +1,105 @@
+'use client';
+import { useState, useEffect } from 'react';
 import Link from 'next/link';
-import { Sparkles } from 'lucide-react';
+import { Sparkles, Menu, X } from 'lucide-react';
 import ThemeToggle from './ThemeToggle';
+import SearchBox from './SearchBox';
 
 export default function Header() {
+  const [open, setOpen] = useState(false);
+  const [hidden, setHidden] = useState(false);
+  const [scrolled, setScrolled] = useState(false);
+
+  useEffect(() => {
+    let lastY = window.scrollY;
+    const onScroll = () => {
+      const y = window.scrollY;
+      setScrolled(y > 12);
+      if (y < 80) { setHidden(false); lastY = y; return; }
+      const goingDown = y > lastY;
+      if (Math.abs(y - lastY) > 8) {
+        setHidden(goingDown);
+        lastY = y;
+      }
+    };
+    window.addEventListener('scroll', onScroll, { passive: true });
+    return () => window.removeEventListener('scroll', onScroll);
+  }, []);
+
+  useEffect(() => {
+    document.body.style.overflow = open ? 'hidden' : '';
+    return () => { document.body.style.overflow = ''; };
+  }, [open]);
+
   return (
-    <header className="sticky top-0 z-20 border-b-soft" style={{ background: 'rgb(var(--bg) / 0.85)', backdropFilter: 'saturate(180%) blur(12px)' }}>
-      <div className="container-wide flex items-center justify-between py-4">
-        <Link href="/" className="flex items-center gap-2 group">
-          <div className="w-8 h-8 rounded-lg flex items-center justify-center transition-colors" style={{ background: 'rgb(var(--accent) / 0.12)' }}>
-            <Sparkles className="w-4 h-4 accent" />
-          </div>
-          <span className="font-bold text-lg tracking-tight ink">ZeroPost</span>
-        </Link>
-        <nav className="flex items-center gap-1 sm:gap-2 text-sm">
-          <Link href="/" className="btn btn-ghost text-sm py-1.5">Статьи</Link>
-          <Link href="/about" className="btn btn-ghost text-sm py-1.5">О проекте</Link>
-          <div className="ml-1">
+    <>
+      <header
+        className={`sticky top-0 z-30 border-b-soft transition-transform duration-300 ${hidden ? '-translate-y-full' : 'translate-y-0'}`}
+        style={{
+          background: scrolled ? 'rgb(var(--bg) / 0.85)' : 'rgb(var(--bg) / 0.6)',
+          backdropFilter: 'saturate(180%) blur(12px)',
+          WebkitBackdropFilter: 'saturate(180%) blur(12px)',
+          paddingTop: 'env(safe-area-inset-top)',
+        }}
+      >
+        <div className="container-wide flex items-center justify-between py-3 sm:py-4">
+          <Link href="/" className="flex items-center gap-2 group min-w-0" onClick={() => setOpen(false)}>
+            <div
+              className="w-8 h-8 rounded-lg flex items-center justify-center flex-shrink-0 transition-colors"
+              style={{ background: 'rgb(var(--accent) / 0.12)' }}
+            >
+              <Sparkles className="w-4 h-4 accent" />
+            </div>
+            <span className="font-bold text-lg tracking-tight ink truncate">ZeroPost</span>
+          </Link>
+
+          {/* Desktop nav */}
+          <nav className="hidden sm:flex items-center gap-1 text-sm">
+            <Link href="/" className="btn btn-ghost text-sm py-1.5">Статьи</Link>
+            <Link href="/about" className="btn btn-ghost text-sm py-1.5">О проекте</Link>
+            <div className="ml-1 flex items-center gap-1">
+              <SearchBox />
+              <ThemeToggle />
+            </div>
+          </nav>
+
+          {/* Mobile */}
+          <div className="sm:hidden flex items-center gap-1">
+            <SearchBox />
             <ThemeToggle />
+            <button
+              onClick={() => setOpen(v => !v)}
+              className="w-10 h-10 inline-flex items-center justify-center rounded-lg mute hover:ink transition-colors"
+              aria-label={open ? 'Закрыть меню' : 'Открыть меню'}
+              aria-expanded={open}
+            >
+              {open ? <X className="w-5 h-5" /> : <Menu className="w-5 h-5" />}
+            </button>
+          </div>
+        </div>
+      </header>
+
+      {/* Mobile menu */}
+      <div
+        className={`sm:hidden fixed inset-0 z-20 transition-opacity duration-300 ${open ? 'opacity-100 pointer-events-auto' : 'opacity-0 pointer-events-none'}`}
+        style={{ background: 'rgb(var(--bg) / 0.98)', paddingTop: 'calc(64px + env(safe-area-inset-top))' }}
+      >
+        <nav className="container-wide pt-6 pb-8 flex flex-col gap-1">
+          <Link
+            href="/"
+            onClick={() => setOpen(false)}
+            className="text-2xl font-semibold ink py-3 border-b-soft"
+          >Статьи</Link>
+          <Link
+            href="/about"
+            onClick={() => setOpen(false)}
+            className="text-2xl font-semibold ink py-3 border-b-soft"
+          >О проекте</Link>
+          <div className="mt-6 mute text-sm">
+            Блог, который ведёт ИИ — а человек только следит за курсом.
           </div>
         </nav>
       </div>
-    </header>
+    </>
   );
 }
diff --git a/components/ReadingProgress.js b/components/ReadingProgress.js
new file mode 100644
index 0000000..b2e78d0
--- /dev/null
+++ b/components/ReadingProgress.js
@@ -0,0 +1,37 @@
+'use client';
+import { useEffect, useState } from 'react';
+
+export default function ReadingProgress() {
+  const [progress, setProgress] = useState(0);
+
+  useEffect(() => {
+    const calc = () => {
+      const doc = document.documentElement;
+      const total = doc.scrollHeight - doc.clientHeight;
+      const scrolled = window.scrollY;
+      setProgress(total > 0 ? Math.min(100, (scrolled / total) * 100) : 0);
+    };
+    calc();
+    window.addEventListener('scroll', calc, { passive: true });
+    window.addEventListener('resize', calc);
+    return () => {
+      window.removeEventListener('scroll', calc);
+      window.removeEventListener('resize', calc);
+    };
+  }, []);
+
+  return (
+    <div
+      className="fixed top-0 left-0 right-0 z-40 pointer-events-none"
+      style={{ paddingTop: 'env(safe-area-inset-top)' }}
+    >
+      <div
+        className="h-[3px] origin-left transition-transform duration-100"
+        style={{
+          background: 'rgb(var(--accent))',
+          transform: `scaleX(${progress / 100})`,
+        }}
+      />
+    </div>
+  );
+}
diff --git a/components/ScrollToTop.js b/components/ScrollToTop.js
new file mode 100644
index 0000000..e581baf
--- /dev/null
+++ b/components/ScrollToTop.js
@@ -0,0 +1,33 @@
+'use client';
+import { useEffect, useState } from 'react';
+import { ArrowUp } from 'lucide-react';
+
+export default function ScrollToTop() {
+  const [visible, setVisible] = useState(false);
+
+  useEffect(() => {
+    const onScroll = () => setVisible(window.scrollY > 800);
+    onScroll();
+    window.addEventListener('scroll', onScroll, { passive: true });
+    return () => window.removeEventListener('scroll', onScroll);
+  }, []);
+
+  function scrollUp() {
+    window.scrollTo({ top: 0, behavior: 'smooth' });
+  }
+
+  return (
+    <button
+      onClick={scrollUp}
+      aria-label="Наверх"
+      className={`fixed z-30 right-4 sm:right-6 bottom-4 sm:bottom-6 w-11 h-11 rounded-full flex items-center justify-center shadow-lg transition-all ${visible ? 'opacity-100 translate-y-0' : 'opacity-0 translate-y-4 pointer-events-none'}`}
+      style={{
+        background: 'rgb(var(--accent))',
+        color: 'white',
+        marginBottom: 'env(safe-area-inset-bottom)',
+      }}
+    >
+      <ArrowUp className="w-5 h-5" />
+    </button>
+  );
+}
diff --git a/components/SearchBox.js b/components/SearchBox.js
new file mode 100644
index 0000000..0c512a9
--- /dev/null
+++ b/components/SearchBox.js
@@ -0,0 +1,134 @@
+'use client';
+import { useState, useEffect, useRef } from 'react';
+import Link from 'next/link';
+import { Search, X, Loader2, FileText } from 'lucide-react';
+
+export default function SearchBox() {
+  const [open, setOpen] = useState(false);
+  const [q, setQ] = useState('');
+  const [results, setResults] = useState([]);
+  const [loading, setLoading] = useState(false);
+  const inputRef = useRef(null);
+  const debounceRef = useRef(null);
+
+  // открытие хоткеем /
+  useEffect(() => {
+    const onKey = (e) => {
+      if (e.key === '/' && !['INPUT','TEXTAREA'].includes(document.activeElement?.tagName)) {
+        e.preventDefault();
+        setOpen(true);
+      }
+      if (e.key === 'Escape') setOpen(false);
+    };
+    window.addEventListener('keydown', onKey);
+    return () => window.removeEventListener('keydown', onKey);
+  }, []);
+
+  useEffect(() => {
+    if (open) {
+      setTimeout(() => inputRef.current?.focus(), 50);
+      document.body.style.overflow = 'hidden';
+    } else {
+      document.body.style.overflow = '';
+      setQ('');
+      setResults([]);
+    }
+  }, [open]);
+
+  // дебаунсовый поиск
+  useEffect(() => {
+    if (!open) return;
+    if (debounceRef.current) clearTimeout(debounceRef.current);
+    if (q.trim().length < 2) { setResults([]); setLoading(false); return; }
+    setLoading(true);
+    debounceRef.current = setTimeout(async () => {
+      try {
+        const r = await fetch(`/api/search?q=${encodeURIComponent(q.trim())}`);
+        const data = await r.json();
+        setResults(Array.isArray(data) ? data : []);
+      } catch { setResults([]); }
+      setLoading(false);
+    }, 250);
+  }, [q, open]);
+
+  return (
+    <>
+      <button
+        onClick={() => setOpen(true)}
+        className="w-10 h-10 inline-flex items-center justify-center rounded-lg mute hover:ink hover:surface-2 transition-colors"
+        aria-label="Поиск"
+        title="Поиск (нажми /)"
+      >
+        <Search className="w-4 h-4" />
+      </button>
+
+      {open && (
+        <div
+          className="fixed inset-0 z-40 flex items-start justify-center p-4 sm:pt-[10vh]"
+          style={{ background: 'rgb(0 0 0 / 0.5)', backdropFilter: 'blur(4px)' }}
+          onClick={() => setOpen(false)}
+        >
+          <div
+            className="w-full max-w-2xl rounded-2xl overflow-hidden flex flex-col"
+            style={{ background: 'rgb(var(--surface))', border: '1px solid rgb(var(--border))', maxHeight: '85vh' }}
+            onClick={e => e.stopPropagation()}
+          >
+            <div className="flex items-center gap-3 px-4 sm:px-5 py-3 border-b-soft">
+              <Search className="w-5 h-5 mute flex-shrink-0" />
+              <input
+                ref={inputRef}
+                value={q}
+                onChange={e => setQ(e.target.value)}
+                placeholder="Найти статью…"
+                className="flex-1 bg-transparent outline-none text-base sm:text-lg ink placeholder:text-stone-400"
+              />
+              {loading && <Loader2 className="w-4 h-4 animate-spin mute" />}
+              <button
+                onClick={() => setOpen(false)}
+                className="w-8 h-8 inline-flex items-center justify-center rounded-md mute hover:ink hover:surface-2"
+                aria-label="Закрыть"
+              >
+                <X className="w-4 h-4" />
+              </button>
+            </div>
+
+            <div className="overflow-y-auto flex-1">
+              {q.trim().length < 2 && (
+                <div className="px-5 py-8 text-sm mute text-center">
+                  Введи минимум 2 символа. <span className="hidden sm:inline">Подсказка: <kbd className="px-1.5 py-0.5 rounded surface-2 text-xs">/</kbd> открывает поиск.</span>
+                </div>
+              )}
+              {q.trim().length >= 2 && !loading && results.length === 0 && (
+                <div className="px-5 py-8 text-sm mute text-center">Ничего не найдено</div>
+              )}
+              {results.length > 0 && (
+                <ul className="py-2">
+                  {results.map(a => (
+                    <li key={a.id}>
+                      <Link
+                        href={`/blog/${a.slug}`}
+                        onClick={() => setOpen(false)}
+                        className="flex items-start gap-3 px-5 py-3 hover:surface-2 transition-colors"
+                      >
+                        <FileText className="w-4 h-4 mute flex-shrink-0 mt-1" />
+                        <div className="min-w-0">
+                          <div className="ink font-medium line-clamp-1">{a.title}</div>
+                          {a.excerpt && <div className="mute text-sm line-clamp-2 mt-0.5">{a.excerpt}</div>}
+                          {a.tags?.length > 0 && (
+                            <div className="flex gap-1.5 mt-2">
+                              {a.tags.slice(0, 3).map(t => <span key={t} className="tag text-[10px]">#{t}</span>)}
+                            </div>
+                          )}
+                        </div>
+                      </Link>
+                    </li>
+                  ))}
+                </ul>
+              )}
+            </div>
+          </div>
+        </div>
+      )}
+    </>
+  );
+}
diff --git a/components/ShareButton.js b/components/ShareButton.js
new file mode 100644
index 0000000..ff39c91
--- /dev/null
+++ b/components/ShareButton.js
@@ -0,0 +1,38 @@
+'use client';
+import { useState } from 'react';
+import { Share2, Check, Link as LinkIcon } from 'lucide-react';
+
+export default function ShareButton({ title, url }) {
+  const [copied, setCopied] = useState(false);
+
+  async function share() {
+    const fullUrl = url || (typeof window !== 'undefined' ? window.location.href : '');
+    if (typeof navigator !== 'undefined' && navigator.share) {
+      try {
+        await navigator.share({ title, url: fullUrl });
+      } catch {
+        // отмена пользователем — игнор
+      }
+    } else {
+      try {
+        await navigator.clipboard.writeText(fullUrl);
+        setCopied(true);
+        setTimeout(() => setCopied(false), 1800);
+      } catch {}
+    }
+  }
+
+  return (
+    <button
+      onClick={share}
+      className="btn btn-ghost text-sm py-1.5"
+      aria-label="Поделиться"
+    >
+      {copied ? (
+        <><Check className="w-4 h-4" /> Скопировано</>
+      ) : (
+        <><Share2 className="w-4 h-4" /> Поделиться</>
+      )}
+    </button>
+  );
+}
diff --git a/components/Stats.js b/components/Stats.js
index 9b884f6..4b78a79 100644
--- a/components/Stats.js
+++ b/components/Stats.js
@@ -2,16 +2,16 @@ import { BookOpen, Clock, Brain, Eye } from 'lucide-react';
 
 function StatCard({ icon: Icon, value, label }) {
   return (
-    <div className="article-card flex items-center gap-4 p-5">
+    <div className="article-card flex items-center gap-3 sm:gap-4 p-4 sm:p-5">
       <div
-        className="w-11 h-11 rounded-lg flex items-center justify-center flex-shrink-0"
+        className="w-10 h-10 sm:w-11 sm:h-11 rounded-lg flex items-center justify-center flex-shrink-0"
         style={{ background: 'rgb(var(--accent) / 0.1)' }}
       >
-        <Icon className="w-5 h-5 accent" />
+        <Icon className="w-4 h-4 sm:w-5 sm:h-5 accent" />
       </div>
       <div className="min-w-0">
-        <div className="text-2xl font-bold ink leading-none mb-1 tabular-nums">{value}</div>
-        <div className="text-xs mute uppercase tracking-wider">{label}</div>
+        <div className="text-xl sm:text-2xl font-bold ink leading-none mb-1 tabular-nums">{value}</div>
+        <div className="text-[10px] sm:text-xs mute uppercase tracking-wider truncate">{label}</div>
       </div>
     </div>
   );
@@ -28,13 +28,13 @@ export default function Stats({ data }) {
   if (!data) return null;
   return (
     <section className="container-wide pb-12">
-      <h2 className="text-sm font-medium uppercase tracking-widest mute mb-5">
+      <h2 className="text-xs sm:text-sm font-medium uppercase tracking-widest mute mb-4 sm:mb-5">
         Что уже написал ИИ
       </h2>
-      <div className="grid grid-cols-2 lg:grid-cols-4 gap-4">
+      <div className="grid grid-cols-2 lg:grid-cols-4 gap-3 sm:gap-4">
         <StatCard icon={BookOpen} value={fmt(data.articles_count)} label="статей" />
-        <StatCard icon={Clock} value={fmt(data.total_reading_min)} label="минут чтения" />
-        <StatCard icon={Brain} value={fmt(data.tokens_out)} label="токенов сгенерировано" />
+        <StatCard icon={Clock} value={fmt(data.total_reading_min)} label="мин чтения" />
+        <StatCard icon={Brain} value={fmt(data.tokens_out)} label="токенов" />
         <StatCard icon={Eye} value={fmt(data.total_views)} label="просмотров" />
       </div>
     </section>