diff --git a/dailystone/admin.py b/dailystone/admin.py
index 33cd6af..53a4f15 100644
--- a/dailystone/admin.py
+++ b/dailystone/admin.py
@@ -5,9 +5,9 @@ from .models import Mineral
 
 @admin.register(Mineral)
 class MineralAdmin(admin.ModelAdmin):
-    list_display = ('name', 'formula', 'day_of_year', 'color_hex', 'category')
+    list_display = ('name', 'name_ru', 'formula', 'day_of_year', 'color_hex', 'category')
     list_filter = ('category', 'crystal_system')
-    search_fields = ('name', 'formula')
+    search_fields = ('name', 'name_ru', 'formula')
     list_editable = ('day_of_year', 'color_hex')
     fieldsets = (
         (None, {
@@ -23,6 +23,10 @@ class MineralAdmin(admin.ModelAdmin):
         ('Text', {
             'fields': ('description', 'history'),
         }),
+        ('Russian', {
+            'fields': ('name_ru', 'color_description_ru',
+                       'description_ru', 'history_ru', 'wikipedia_url_ru'),
+        }),
         ('Links', {
             'fields': ('wikipedia_url',),
         }),
diff --git a/dailystone/management/commands/scrape_minerals_ru.py b/dailystone/management/commands/scrape_minerals_ru.py
new file mode 100644
index 0000000..4499664
--- /dev/null
+++ b/dailystone/management/commands/scrape_minerals_ru.py
@@ -0,0 +1,244 @@
+"""
+Scrape Russian Wikipedia translations for existing minerals.
+
+Usage:
+    python manage.py scrape_minerals_ru
+    python manage.py scrape_minerals_ru --limit 10
+    python manage.py scrape_minerals_ru --skip-existing
+"""
+import re
+import time
+
+import requests
+from bs4 import BeautifulSoup
+from django.core.management.base import BaseCommand
+
+from dailystone.models import Mineral
+
+SESSION = None
+
+
+def get_session():
+    global SESSION
+    if SESSION is None:
+        SESSION = requests.Session()
+        SESSION.headers.update({
+            'User-Agent': 'DailyStoneBot/1.0 (k-boris.tech; educational mineral wiki)'
+        })
+    return SESSION
+
+
+def _request_with_backoff(session, url, params, timeout=30, max_retries=5):
+    for attempt in range(max_retries):
+        resp = session.get(url, params=params, timeout=timeout)
+        if resp.status_code == 429:
+            retry_after = resp.headers.get('Retry-After')
+            if retry_after and retry_after.isdigit():
+                wait = min(int(retry_after) + 1, 120)
+            else:
+                wait = 10 * (2 ** attempt)
+            time.sleep(wait)
+            continue
+        resp.raise_for_status()
+        return resp
+    resp.raise_for_status()
+    return resp
+
+
+def _clean_text(text):
+    text = re.sub(r'\[[\d,\s]+\]', '', text)
+    text = re.sub(r'\[citation needed\]', '', text, flags=re.IGNORECASE)
+    text = re.sub(r'\[уточнить\]', '', text, flags=re.IGNORECASE)
+    text = re.sub(r'\s+', ' ', text)
+    text = re.sub(r'\s+([.,;:!?)])', r'\1', text)
+    text = re.sub(r'(\()\s+', r'\1', text)
+    return text.strip()
+
+
+def get_russian_title(english_title):
+    """Get the Russian Wikipedia article title via langlinks API."""
+    session = get_session()
+    resp = _request_with_backoff(session, 'https://en.wikipedia.org/w/api.php', params={
+        'action': 'query',
+        'titles': english_title,
+        'prop': 'langlinks',
+        'lllang': 'ru',
+        'redirects': 1,
+        'format': 'json',
+    })
+    data = resp.json()
+    pages = data.get('query', {}).get('pages', {})
+    for page_data in pages.values():
+        langlinks = page_data.get('langlinks', [])
+        if langlinks:
+            return langlinks[0]['*']
+    return None
+
+
+def get_russian_page(title):
+    """Fetch parsed Russian Wikipedia page."""
+    session = get_session()
+    resp = _request_with_backoff(session, 'https://ru.wikipedia.org/w/api.php', params={
+        'action': 'parse',
+        'page': title,
+        'prop': 'text',
+        'format': 'json',
+        'redirects': 1,
+    })
+    data = resp.json()
+    if 'error' in data:
+        return None
+    return data['parse']
+
+
+def _find_heading_wrapper(tag):
+    parent = tag.parent
+    if parent and parent.name == 'div' and 'mw-heading' in (parent.get('class') or []):
+        return parent
+    return tag
+
+
+def _collect_section_paragraphs(start_element, max_paras=2):
+    parts = []
+    heading_classes = {'mw-heading', 'mw-heading2', 'mw-heading3'}
+    sibling = start_element.find_next_sibling()
+    while sibling:
+        if sibling.name in ['h2', 'h3']:
+            break
+        if sibling.name == 'div' and heading_classes & set(sibling.get('class') or []):
+            break
+        if sibling.name == 'p':
+            text = sibling.get_text(' ', strip=True)
+            if len(text) > 30:
+                parts.append(_clean_text(text))
+                if len(parts) >= max_paras:
+                    break
+        sibling = sibling.find_next_sibling()
+    return parts
+
+
+def extract_description(soup):
+    paragraphs = []
+    for p in soup.find_all('p'):
+        text = p.get_text(' ', strip=True)
+        if len(text) > 50:
+            paragraphs.append(_clean_text(text))
+            if len(paragraphs) >= 3:
+                break
+    return '\n\n'.join(paragraphs)
+
+
+def extract_history(soup):
+    history_headers = [
+        'история', 'этимология', 'открытие', 'происхождение названия',
+        'название', 'нахождение', 'месторождения',
+    ]
+    for header_tag in soup.find_all(['h2', 'h3']):
+        header_text = header_tag.get_text(strip=True).lower()
+        header_text = re.sub(r'\[править[^\]]*\]', '', header_text).strip()
+        if any(h in header_text for h in history_headers):
+            wrapper = _find_heading_wrapper(header_tag)
+            parts = _collect_section_paragraphs(wrapper)
+            if parts:
+                return '\n\n'.join(parts)
+    return ''
+
+
+def extract_infobox_color(soup):
+    """Try to extract color description from Russian infobox."""
+    table = soup.find('table', class_='infobox')
+    if not table:
+        return ''
+    for row in table.find_all('tr'):
+        th = row.find('th')
+        td = row.find('td')
+        if th and td:
+            key = th.get_text(strip=True).lower()
+            if 'цвет' in key or 'окраска' in key:
+                return td.get_text(' ', strip=True)
+    return ''
+
+
+class Command(BaseCommand):
+    help = 'Scrape Russian Wikipedia translations for existing minerals'
+
+    def add_arguments(self, parser):
+        parser.add_argument('--limit', type=int, default=0)
+        parser.add_argument('--skip-existing', action='store_true',
+                            help='Skip minerals that already have Russian name')
+
+    def handle(self, *args, **options):
+        limit = options['limit']
+        skip_existing = options['skip_existing']
+
+        minerals = Mineral.objects.all()
+        if limit:
+            minerals = minerals[:limit]
+
+        total = minerals.count()
+        self.stdout.write(f'Processing {total} minerals...\n')
+
+        success = 0
+        skipped = 0
+        failed = 0
+
+        for i, mineral in enumerate(minerals, 1):
+            if skip_existing and mineral.name_ru:
+                skipped += 1
+                continue
+
+            self.stdout.write(f'[{i}/{total}] {mineral.name}... ', ending='')
+
+            try:
+                # Extract English Wikipedia title from URL or use name
+                if mineral.wikipedia_url:
+                    en_title = mineral.wikipedia_url.split('/wiki/')[-1]
+                    en_title = requests.utils.unquote(en_title)
+                else:
+                    en_title = mineral.name
+
+                # Find Russian article
+                ru_title = get_russian_title(en_title)
+                if not ru_title:
+                    self.stdout.write('no Russian article')
+                    failed += 1
+                    time.sleep(2)
+                    continue
+
+                # Fetch Russian page
+                parse_data = get_russian_page(ru_title)
+                if not parse_data:
+                    self.stdout.write(f'failed to fetch {ru_title}')
+                    failed += 1
+                    time.sleep(2)
+                    continue
+
+                html = parse_data['text']['*']
+                soup = BeautifulSoup(html, 'html.parser')
+
+                # Remove reference sections, navboxes, etc.
+                for tag in soup.find_all(['table', 'div'], class_=['navbox', 'metadata']):
+                    tag.decompose()
+
+                mineral.name_ru = ru_title
+                mineral.description_ru = extract_description(soup)
+                mineral.history_ru = extract_history(soup)
+                mineral.wikipedia_url_ru = f'https://ru.wikipedia.org/wiki/{requests.utils.quote(ru_title)}'
+
+                color = extract_infobox_color(soup)
+                if color:
+                    mineral.color_description_ru = color[:300]
+
+                mineral.save()
+                success += 1
+                self.stdout.write(f'{ru_title}')
+
+            except Exception as e:
+                self.stdout.write(f'ERROR: {e}')
+                failed += 1
+
+            time.sleep(3)
+
+        self.stdout.write(
+            f'\nDone: {success} translated, {skipped} skipped, {failed} failed'
+        )
diff --git a/dailystone/migrations/0002_add_russian_fields.py b/dailystone/migrations/0002_add_russian_fields.py
new file mode 100644
index 0000000..4aeff41
--- /dev/null
+++ b/dailystone/migrations/0002_add_russian_fields.py
@@ -0,0 +1,38 @@
+# Generated by Django 6.0.3 on 2026-03-30 19:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dailystone', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='mineral',
+            name='color_description_ru',
+            field=models.CharField(blank=True, max_length=300),
+        ),
+        migrations.AddField(
+            model_name='mineral',
+            name='description_ru',
+            field=models.TextField(blank=True),
+        ),
+        migrations.AddField(
+            model_name='mineral',
+            name='history_ru',
+            field=models.TextField(blank=True),
+        ),
+        migrations.AddField(
+            model_name='mineral',
+            name='name_ru',
+            field=models.CharField(blank=True, max_length=200),
+        ),
+        migrations.AddField(
+            model_name='mineral',
+            name='wikipedia_url_ru',
+            field=models.URLField(blank=True, max_length=500),
+        ),
+    ]
diff --git a/dailystone/models.py b/dailystone/models.py
index bbc2c28..198954a 100644
--- a/dailystone/models.py
+++ b/dailystone/models.py
@@ -18,6 +18,13 @@ class Mineral(models.Model):
     wikipedia_url = models.URLField(max_length=500, blank=True)
     day_of_year = models.IntegerField(unique=True, null=True, blank=True)
 
+    # Russian translations
+    name_ru = models.CharField(max_length=200, blank=True)
+    description_ru = models.TextField(blank=True)
+    history_ru = models.TextField(blank=True)
+    color_description_ru = models.CharField(max_length=300, blank=True)
+    wikipedia_url_ru = models.URLField(max_length=500, blank=True)
+
     class Meta:
         ordering = ['day_of_year']
 
diff --git a/dailystone/templates/dailystone/stone.html b/dailystone/templates/dailystone/stone.html
index 10d6ccc..3ab20fc 100644
--- a/dailystone/templates/dailystone/stone.html
+++ b/dailystone/templates/dailystone/stone.html
@@ -69,13 +69,15 @@
             align-items: center;
         }
 
-        .search-toggle {
+        .header-btn {
             display: inline-flex;
             align-items: center;
             justify-content: center;
-            width: 34px;
             height: 34px;
+            min-width: 34px;
+            padding: 0 0.5rem;
             font-family: 'Georgia', serif;
+            font-size: 0.8rem;
             color: var(--stone-text);
             background: var(--stone-muted);
             border: 1px solid var(--border);
@@ -85,15 +87,55 @@
             transition: background 0.2s;
         }
 
-        .search-toggle:hover {
+        .header-btn:hover {
             background: color-mix(in srgb, var(--stone-color) 20%, #f5f5f0);
         }
 
-        .search-toggle svg {
+        .header-btn svg {
             width: 14px;
             height: 14px;
         }
 
+        .header-btn.active {
+            background: var(--stone-color);
+            color: #fff;
+            border-color: var(--stone-color);
+        }
+
+        .random-btn {
+            gap: 0.35rem;
+            padding: 0 0.65rem;
+        }
+
+        .lang-toggle {
+            display: flex;
+            border: 1px solid var(--border);
+            border-radius: 3px;
+            overflow: hidden;
+            height: 34px;
+        }
+
+        .lang-toggle button {
+            padding: 0 0.5rem;
+            font-family: 'Georgia', serif;
+            font-size: 0.75rem;
+            font-weight: bold;
+            border: none;
+            cursor: pointer;
+            background: var(--stone-muted);
+            color: var(--stone-text);
+            transition: background 0.2s, color 0.2s;
+        }
+
+        .lang-toggle button:first-child {
+            border-right: 1px solid var(--border);
+        }
+
+        .lang-toggle button.active {
+            background: var(--stone-color);
+            color: #fff;
+        }
+
         .search-bar {
             display: none;
             margin: -0.5rem 0 1.5rem;
@@ -139,43 +181,51 @@
             background: color-mix(in srgb, var(--stone-color) 20%, #f5f5f0);
         }
 
-        .random-btn {
-            display: inline-flex;
-            align-items: center;
-            gap: 0.35rem;
-            padding: 0.4rem 0.65rem;
-            font-family: 'Georgia', serif;
-            font-size: 0.8rem;
-            color: var(--stone-text);
-            background: var(--stone-muted);
-            border: 1px solid var(--border);
-            border-radius: 3px;
-            text-decoration: none;
-            transition: background 0.2s;
-        }
-
-        .random-btn:hover {
-            background: color-mix(in srgb, var(--stone-color) 20%, #f5f5f0);
-        }
-
-        .random-btn svg {
-            width: 14px;
-            height: 14px;
-        }
-
         .page-header .date {
             font-size: 0.85rem;
             color: var(--text-secondary);
         }
 
+        .mineral-name-row {
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            gap: 0.5rem;
+            margin: 0.5rem 0 0.25rem;
+        }
+
         .mineral-name {
             font-size: 2.4rem;
             font-weight: normal;
             color: var(--stone-text);
-            margin: 0.5rem 0 0.25rem;
             line-height: 1.2;
         }
 
+        .speak-btn {
+            display: inline-flex;
+            align-items: center;
+            justify-content: center;
+            width: 30px;
+            height: 30px;
+            background: none;
+            border: 1px solid transparent;
+            border-radius: 50%;
+            cursor: pointer;
+            color: var(--text-secondary);
+            transition: color 0.2s, border-color 0.2s;
+            flex-shrink: 0;
+        }
+
+        .speak-btn:hover {
+            color: var(--stone-text);
+            border-color: var(--border);
+        }
+
+        .speak-btn svg {
+            width: 18px;
+            height: 18px;
+        }
+
         .formula {
             font-size: 1.15rem;
             font-family: 'Georgia', serif;
@@ -191,6 +241,16 @@
             top: 0.3em;
         }
 
+        /* Language content */
+        .lang-ru { display: none; }
+
+        .mineral-name-ru {
+            font-size: 1.1rem;
+            color: var(--text-secondary);
+            margin-top: -0.15rem;
+            margin-bottom: 0.25rem;
+        }
+
         /* Photo gallery */
         .gallery {
             margin: 1.5rem 0;
@@ -397,12 +457,18 @@
 
         <header class="page-header">
             <div class="header-actions">
-                <a href="#" class="search-toggle" title="Search minerals" onclick="document.getElementById('searchBar').classList.toggle('open');document.getElementById('searchInput').focus();return false;">
+                <a href="#" class="header-btn" title="Search minerals" onclick="document.getElementById('searchBar').classList.toggle('open');document.getElementById('searchInput').focus();return false;">
                     <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                         <circle cx="11" cy="11" r="8"></circle><line x1="21" y1="21" x2="16.65" y2="16.65"></line>
                     </svg>
                 </a>
-                <a href="{% url 'dailystone:random_stone' %}" class="random-btn" title="Random mineral">
+                {% if mineral.name_ru %}
+                <div class="lang-toggle">
+                    <button onclick="setLang('en')" data-lang="en" class="active">EN</button>
+                    <button onclick="setLang('ru')" data-lang="ru">RU</button>
+                </div>
+                {% endif %}
+                <a href="{% url 'dailystone:random_stone' %}" class="header-btn random-btn" title="Random mineral">
                     <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                         <polyline points="16 3 21 3 21 8"></polyline><line x1="4" y1="20" x2="21" y2="3"></line>
                         <polyline points="21 16 21 21 16 21"></polyline><line x1="15" y1="15" x2="21" y2="21"></line>
@@ -412,7 +478,25 @@
                 </a>
             </div>
             <div class="label">{% if is_random %}Random Stone{% else %}Daily Stone{% endif %}</div>
-            <h1 class="mineral-name">{{ mineral.name }}</h1>
+            <div class="mineral-name-row">
+                <h1 class="mineral-name">
+                    <span class="lang-en">{{ mineral.name }}</span>
+                    {% if mineral.name_ru %}<span class="lang-ru">{{ mineral.name_ru }}</span>{% endif %}
+                </h1>
+                <button class="speak-btn" onclick="speak('{{ mineral.name }}')" title="Pronounce name">
+                    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                        <polygon points="11 5 6 9 2 9 2 15 6 15 11 19 11 5"></polygon>
+                        <path d="M15.54 8.46a5 5 0 0 1 0 7.07"></path>
+                        <path d="M19.07 4.93a10 10 0 0 1 0 14.14"></path>
+                    </svg>
+                </button>
+            </div>
+            {% if mineral.name_ru %}
+            <div class="mineral-name-ru">
+                <span class="lang-en">{{ mineral.name_ru }}</span>
+                <span class="lang-ru">{{ mineral.name }}</span>
+            </div>
+            {% endif %}
             {% if mineral.formula %}<div class="formula">{{ mineral.formula|chem_formula }}</div>{% endif %}
             <div class="date">{{ today|date:"F j, Y" }}</div>
         </header>
@@ -449,52 +533,57 @@
         <div class="color-row">
             <div class="color-swatch"></div>
             <div class="color-info">
+                <span class="lang-en">
                 {% if mineral.color_description %}
                     {{ mineral.color_description }}
                 {% else %}
                     Typical color
                 {% endif %}
+                </span>
+                {% if mineral.color_description_ru %}
+                <span class="lang-ru">{{ mineral.color_description_ru }}</span>
+                {% endif %}
                 <br><span class="hex">{{ mineral.color_hex }}</span>
             </div>
         </div>
 
         <!-- Properties -->
         <div class="properties">
-            <h2>Properties</h2>
+            <h2><span class="lang-en">Properties</span><span class="lang-ru">Свойства</span></h2>
             <div class="prop-grid">
                 {% if mineral.category %}
                 <div class="prop-item">
-                    <span class="prop-label">Category</span>
+                    <span class="prop-label"><span class="lang-en">Category</span><span class="lang-ru">Категория</span></span>
                     <span class="prop-value">{{ mineral.category }}</span>
                 </div>
                 {% endif %}
                 {% if mineral.crystal_system %}
                 <div class="prop-item">
-                    <span class="prop-label">Crystal System</span>
+                    <span class="prop-label"><span class="lang-en">Crystal System</span><span class="lang-ru">Сингония</span></span>
                     <span class="prop-value">{{ mineral.crystal_system }}</span>
                 </div>
                 {% endif %}
                 {% if mineral.mohs_hardness %}
                 <div class="prop-item">
-                    <span class="prop-label">Hardness (Mohs)</span>
+                    <span class="prop-label"><span class="lang-en">Hardness (Mohs)</span><span class="lang-ru">Твёрдость (Моос)</span></span>
                     <span class="prop-value">{{ mineral.mohs_hardness }}</span>
                 </div>
                 {% endif %}
                 {% if mineral.luster %}
                 <div class="prop-item">
-                    <span class="prop-label">Luster</span>
+                    <span class="prop-label"><span class="lang-en">Luster</span><span class="lang-ru">Блеск</span></span>
                     <span class="prop-value">{{ mineral.luster }}</span>
                 </div>
                 {% endif %}
                 {% if mineral.streak %}
                 <div class="prop-item">
-                    <span class="prop-label">Streak</span>
+                    <span class="prop-label"><span class="lang-en">Streak</span><span class="lang-ru">Черта</span></span>
                     <span class="prop-value">{{ mineral.streak }}</span>
                 </div>
                 {% endif %}
                 {% if mineral.specific_gravity %}
                 <div class="prop-item">
-                    <span class="prop-label">Specific Gravity</span>
+                    <span class="prop-label"><span class="lang-en">Specific Gravity</span><span class="lang-ru">Плотность</span></span>
                     <span class="prop-value">{{ mineral.specific_gravity }}</span>
                 </div>
                 {% endif %}
@@ -504,32 +593,66 @@
         <!-- Description -->
         {% if mineral.description %}
         <div class="section">
-            <h2>About</h2>
+            <h2><span class="lang-en">About</span><span class="lang-ru">Описание</span></h2>
+            <div class="lang-en">
             {% for para in mineral.description.splitlines %}
                 {% if para %}<p>{{ para }}</p>{% endif %}
             {% endfor %}
+            </div>
+            {% if mineral.description_ru %}
+            <div class="lang-ru">
+            {% for para in mineral.description_ru.splitlines %}
+                {% if para %}<p>{{ para }}</p>{% endif %}
+            {% endfor %}
+            </div>
+            {% endif %}
         </div>
         {% endif %}
 
         <!-- History -->
         {% if mineral.history %}
         <div class="section">
-            <h2>History &amp; Etymology</h2>
+            <h2><span class="lang-en">History &amp; Etymology</span><span class="lang-ru">История и этимология</span></h2>
+            <div class="lang-en">
             {% for para in mineral.history.splitlines %}
                 {% if para %}<p>{{ para }}</p>{% endif %}
             {% endfor %}
+            </div>
+            {% if mineral.history_ru %}
+            <div class="lang-ru">
+            {% for para in mineral.history_ru.splitlines %}
+                {% if para %}<p>{{ para }}</p>{% endif %}
+            {% endfor %}
+            </div>
+            {% endif %}
         </div>
         {% endif %}
 
         <!-- Footer -->
         <footer class="page-footer">
+            <span class="lang-en">
             {% if mineral.wikipedia_url %}
             <a href="{{ mineral.wikipedia_url }}" target="_blank" rel="noopener">
                 Read more on Wikipedia &rarr;
             </a>
             {% endif %}
+            </span>
+            <span class="lang-ru">
+            {% if mineral.wikipedia_url_ru %}
+            <a href="{{ mineral.wikipedia_url_ru }}" target="_blank" rel="noopener">
+                Читать на Википедии &rarr;
+            </a>
+            {% elif mineral.wikipedia_url %}
+            <a href="{{ mineral.wikipedia_url }}" target="_blank" rel="noopener">
+                Read more on Wikipedia &rarr;
+            </a>
+            {% endif %}
+            </span>
             {% if total_minerals %}
-            <span class="mineral-count">{{ total_minerals }} minerals in collection</span>
+            <span class="mineral-count">
+                <span class="lang-en">{{ total_minerals }} minerals in collection</span>
+                <span class="lang-ru">{{ total_minerals }} минералов в коллекции</span>
+            </span>
             {% endif %}
             <br>
             <a href="/" class="home-link">k-boris.tech</a>
@@ -543,6 +666,34 @@
                 );
                 thumb.classList.add('active');
             }
+
+            function speak(text) {
+                if (!('speechSynthesis' in window)) return;
+                speechSynthesis.cancel();
+                var u = new SpeechSynthesisUtterance(text);
+                u.lang = 'en-US';
+                u.rate = 0.85;
+                speechSynthesis.speak(u);
+            }
+
+            function setLang(lang) {
+                var en = document.querySelectorAll('.lang-en');
+                var ru = document.querySelectorAll('.lang-ru');
+                for (var i = 0; i < en.length; i++) en[i].style.display = lang === 'en' ? '' : 'none';
+                for (var i = 0; i < ru.length; i++) ru[i].style.display = lang === 'ru' ? '' : 'none';
+                var btns = document.querySelectorAll('.lang-toggle button');
+                for (var i = 0; i < btns.length; i++) {
+                    btns[i].classList.toggle('active', btns[i].getAttribute('data-lang') === lang);
+                }
+                document.documentElement.lang = lang;
+                try { localStorage.setItem('dailystone-lang', lang); } catch(e) {}
+            }
+
+            // Restore saved language preference
+            try {
+                var saved = localStorage.getItem('dailystone-lang');
+                if (saved === 'ru') setLang('ru');
+            } catch(e) {}
         </script>
 
         {% else %}