diff --git a/app/app/Services/Tracking/ChannelResolver.php b/app/app/Services/Tracking/ChannelResolver.php
new file mode 100644
index 00000000..c0aab8e7
--- /dev/null
+++ b/app/app/Services/Tracking/ChannelResolver.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services\Tracking;
+
+/**
+ * Канал посетителя и тип устройства. Чистая логика, без БД.
+ * Приоритет: метка utm_source → откуда пришёл (referrer) → прямой заход.
+ * Spec: docs/superpowers/specs/2026-07-13-visitors-analytics-design.md §7
+ */
+class ChannelResolver
+{
+    private const SEARCH_HOSTS = ['yandex.', 'google.', 'bing.com', 'mail.ru', 'duckduckgo.com', 'ya.ru'];
+
+    private const OWN_HOSTS = ['liderra.ru', 'lk.liderra.ru', 'www.liderra.ru'];
+
+    /** @param array<string,string|null> $utm */
+    public function channel(array $utm, ?string $referrer): string
+    {
+        $source = trim((string) ($utm['utm_source'] ?? ''));
+        if ($source !== '') {
+            return mb_substr(preg_replace('/[^a-z0-9_-]/i', '', $source) ?: 'direct', 0, 32);
+        }
+
+        $host = strtolower((string) parse_url((string) $referrer, PHP_URL_HOST));
+        if ($host === '') {
+            return 'direct';
+        }
+        if (in_array($host, self::OWN_HOSTS, true)) {
+            return 'direct';
+        }
+        if (str_contains($host, 'hh.ru')) {
+            return 'hh';
+        }
+        foreach (self::SEARCH_HOSTS as $needle) {
+            if (str_contains($host, $needle)) {
+                return 'search';
+            }
+        }
+
+        return 'referral';
+    }
+
+    public function device(?string $userAgent): string
+    {
+        $ua = (string) $userAgent;
+        if (preg_match('/iPad|Tablet/i', $ua)) {
+            return 'tablet';
+        }
+        if (preg_match('/Mobile|Android|iPhone/i', $ua)) {
+            return 'phone';
+        }
+
+        return 'desktop';
+    }
+}
diff --git a/app/tests/Unit/ChannelResolverTest.php b/app/tests/Unit/ChannelResolverTest.php
new file mode 100644
index 00000000..6e930dfb
--- /dev/null
+++ b/app/tests/Unit/ChannelResolverTest.php
@@ -0,0 +1,39 @@
+<?php
+declare(strict_types=1);
+
+use App\Services\Tracking\ChannelResolver;
+
+$r = fn () => new ChannelResolver();
+
+test('метка utm_source побеждает всё остальное', function () use ($r) {
+    expect($r()->channel(['utm_source' => 'sms'], 'https://yandex.ru/'))->toBe('sms');
+});
+
+test('поисковик по referrer → search', function () use ($r) {
+    expect($r()->channel([], 'https://yandex.ru/search/?text=лидерра'))->toBe('search');
+    expect($r()->channel([], 'https://www.google.com/'))->toBe('search');
+});
+
+test('hh.ru по referrer → hh', function () use ($r) {
+    expect($r()->channel([], 'https://krasnoyarsk.hh.ru/vacancy/123'))->toBe('hh');
+});
+
+test('прочий сайт → referral', function () use ($r) {
+    expect($r()->channel([], 'https://vc.ru/post/1'))->toBe('referral');
+});
+
+test('пусто → direct', function () use ($r) {
+    expect($r()->channel([], ''))->toBe('direct');
+    expect($r()->channel([], null))->toBe('direct');
+});
+
+test('свой домен в referrer не считается источником → direct', function () use ($r) {
+    expect($r()->channel([], 'https://liderra.ru/'))->toBe('direct');
+});
+
+test('устройство по user-agent', function () use ($r) {
+    expect($r()->device('Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X)'))->toBe('phone');
+    expect($r()->device('Mozilla/5.0 (Linux; Android 10; K)'))->toBe('phone');
+    expect($r()->device('Mozilla/5.0 (iPad; CPU OS 17_0)'))->toBe('tablet');
+    expect($r()->device('Mozilla/5.0 (Windows NT 10.0; Win64; x64)'))->toBe('desktop');
+});