diff --git a/apps/accounts/forms.py b/apps/accounts/forms.py
new file mode 100644
index 0000000..467f106
--- /dev/null
+++ b/apps/accounts/forms.py
@@ -0,0 +1,83 @@
+from datetime import date
+
+from django import forms
+from django.contrib.auth.forms import UserCreationForm
+
+from apps.accounts.models import User
+from apps.catalog.models import LegalStatus
+
+MIN_AGE = 14
+MAX_AGE = 35
+
+
+class SellerStep1Form(UserCreationForm):
+    """Шаг 1 — учётная запись и личные данные (ФИО, дата рождения, регион)."""
+
+    full_name = forms.CharField(label='ФИО', max_length=255)
+    birth_date = forms.DateField(
+        label='Дата рождения',
+        widget=forms.DateInput(attrs={'type': 'date'}),
+    )
+    region = forms.CharField(label='Регион', max_length=120)
+
+    class Meta:
+        model = User
+        fields = ('username', 'email', 'full_name', 'birth_date', 'region')
+
+    def clean_birth_date(self):
+        birth_date = self.cleaned_data['birth_date']
+        today = date.today()
+        age = (
+            today.year
+            - birth_date.year
+            - ((today.month, today.day) < (birth_date.month, birth_date.day))
+        )
+        if age < MIN_AGE:
+            raise forms.ValidationError(
+                f'Минимальный возраст участника — {MIN_AGE} лет.',
+            )
+        if age > MAX_AGE:
+            raise forms.ValidationError(
+                f'Максимальный возраст участника — {MAX_AGE} лет.',
+            )
+        return birth_date
+
+
+class SellerStep2Form(forms.Form):
+    """Шаг 2 — данные бренда (название, статус, ИНН, город, соцсети, деятельность)."""
+
+    brand_name = forms.CharField(label='Название бренда', max_length=200)
+    legal_status = forms.ChoiceField(
+        label='Правовой статус', choices=LegalStatus.choices,
+    )
+    inn = forms.CharField(label='ИНН', max_length=12, required=False)
+    city = forms.CharField(label='Город', max_length=120, required=False)
+    socials = forms.CharField(
+        label='Ссылки на соцсети (по одной в строке)',
+        widget=forms.Textarea(attrs={'rows': 3}), required=False,
+    )
+    story = forms.CharField(
+        label='Описание деятельности',
+        widget=forms.Textarea(attrs={'rows': 4}), max_length=3000, required=False,
+    )
+
+    def clean_inn(self):
+        inn = self.cleaned_data.get('inn', '').strip()
+        if inn and not inn.isdigit():
+            raise forms.ValidationError('ИНН должен содержать только цифры.')
+        return inn
+
+
+class SellerStep3Form(forms.Form):
+    """Шаг 3 — подтверждения и согласие на обработку ПДн."""
+
+    production_photo = forms.ImageField(
+        label='Фото производства', required=False,
+    )
+    statement_doc = forms.FileField(
+        label='Выписка/справка (PDF, JPG, PNG)', required=False,
+    )
+    pd_consent = forms.BooleanField(
+        label='Согласен(на) на обработку персональных данных',
+        required=True,
+    )
\ No newline at end of file
diff --git a/apps/accounts/migrations/0002_user_pd_consent.py b/apps/accounts/migrations/0002_user_pd_consent.py
new file mode 100644
index 0000000..456a759
--- /dev/null
+++ b/apps/accounts/migrations/0002_user_pd_consent.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.1.15 on 2026-09-23 15:24
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounts', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='pd_consent',
+            field=models.BooleanField(default=False, verbose_name='Согласие на обработку ПДн'),
+        ),
+    ]
diff --git a/apps/accounts/models.py b/apps/accounts/models.py
index 430c853..07bbc42 100644
--- a/apps/accounts/models.py
+++ b/apps/accounts/models.py
@@ -22,6 +22,9 @@ class User(AbstractUser):
     phone = models.CharField('Телефон', max_length=32, blank=True)
     birth_date = models.DateField('Дата рождения', null=True, blank=True)
     region = models.CharField('Регион', max_length=120, blank=True)
+    pd_consent = models.BooleanField(
+        'Согласие на обработку ПДн', default=False,
+    )
 
     class Meta:
         verbose_name = 'Пользователь'
diff --git a/apps/accounts/urls.py b/apps/accounts/urls.py
new file mode 100644
index 0000000..96b661f
--- /dev/null
+++ b/apps/accounts/urls.py
@@ -0,0 +1,10 @@
+from django.urls import path
+
+from . import views
+
+app_name = 'accounts'
+
+urlpatterns = [
+    path('register/seller/', views.seller_register, name='seller_register'),
+    path('register/seller/done/', views.seller_register_done, name='seller_register_done'),
+]
\ No newline at end of file
diff --git a/apps/accounts/views.py b/apps/accounts/views.py
index 91ea44a..3ea5a2c 100644
--- a/apps/accounts/views.py
+++ b/apps/accounts/views.py
@@ -1,3 +1,114 @@
-from django.shortcuts import render
+from datetime import date
 
-# Create your views here.
+from django.contrib.contenttypes.models import ContentType
+from django.shortcuts import redirect, render
+from django.urls import reverse
+
+from apps.accounts.forms import SellerStep1Form, SellerStep2Form, SellerStep3Form
+from apps.accounts.models import Role, User
+from apps.catalog.models import Brand, VerificationStatus
+from apps.moderation.models import AuditLog, ModerationRequest
+
+SESSION_KEY = 'seller_registration'
+
+
+def _get_session_data(request):
+    return request.session.get(SESSION_KEY, {})
+
+
+def seller_register(request):
+    """Многошаговая регистрация продавца (FR-01)."""
+
+    step = int(request.GET.get('step', 1))
+    data = _get_session_data(request)
+
+    if step == 1:
+        form = SellerStep1Form(request.POST or None)
+        if request.method == 'POST' and form.is_valid():
+            cleaned = form.cleaned_data
+            # date нельзя сериализовать в сессию (JSON) — храним ISO-строку.
+            cleaned['birth_date'] = cleaned['birth_date'].isoformat()
+            data['step1'] = cleaned
+            request.session[SESSION_KEY] = data
+            return redirect(reverse('accounts:seller_register') + '?step=2')
+        return render(request, 'accounts/seller_register.html', {
+            'form': form, 'step': 1, 'total_steps': 3,
+        })
+
+    if step == 2:
+        if 'step1' not in data:
+            return redirect(reverse('accounts:seller_register'))
+        form = SellerStep2Form(request.POST or None)
+        if request.method == 'POST' and form.is_valid():
+            data['step2'] = form.cleaned_data
+            request.session[SESSION_KEY] = data
+            return redirect(reverse('accounts:seller_register') + '?step=3')
+        return render(request, 'accounts/seller_register.html', {
+            'form': form, 'step': 2, 'total_steps': 3,
+        })
+
+    if step == 3:
+        if 'step1' not in data or 'step2' not in data:
+            return redirect(reverse('accounts:seller_register'))
+        form = SellerStep3Form(request.POST or None, request.FILES or None)
+        if request.method == 'POST' and form.is_valid():
+            _create_seller(request, data, form.cleaned_data)
+            request.session.pop(SESSION_KEY, None)
+            return redirect(reverse('accounts:seller_register_done'))
+        return render(request, 'accounts/seller_register.html', {
+            'form': form, 'step': 3, 'total_steps': 3,
+        })
+
+    return redirect(reverse('accounts:seller_register'))
+
+
+def _create_seller(request, data, step3):
+    s1 = data['step1']
+    s2 = data['step2']
+
+    user = User.objects.create_user(
+        username=s1['username'],
+        email=s1.get('email', ''),
+        password=s1['password1'],
+        role=Role.SELLER,
+        full_name=s1['full_name'],
+        birth_date=date.fromisoformat(s1['birth_date']),
+        region=s1['region'],
+        pd_consent=step3['pd_consent'],
+    )
+
+    socials = [
+        line.strip()
+        for line in s2.get('socials', '').splitlines()
+        if line.strip()
+    ]
+
+    brand = Brand.objects.create(
+        user=user,
+        name=s2['brand_name'],
+        legal_status=s2['legal_status'],
+        inn=s2.get('inn', ''),
+        city=s2.get('city', ''),
+        region=s1['region'],
+        socials=socials,
+        story=s2.get('story', ''),
+        production_photo=step3.get('production_photo'),
+        statement_doc=step3.get('statement_doc'),
+        verification_status=VerificationStatus.PENDING,
+    )
+
+    ModerationRequest.objects.create(
+        content_type=ContentType.objects.get_for_model(Brand),
+        object_id=brand.pk,
+        decision='pending',
+    )
+    AuditLog.objects.create(
+        user=user,
+        action='seller_registered',
+        object_repr=f'Бренд «{brand.name}»',
+    )
+    return user, brand
+
+
+def seller_register_done(request):
+    return render(request, 'accounts/seller_register_done.html')
\ No newline at end of file
diff --git a/apps/catalog/migrations/0002_brand_production_photo_brand_statement_doc.py b/apps/catalog/migrations/0002_brand_production_photo_brand_statement_doc.py
new file mode 100644
index 0000000..88ba118
--- /dev/null
+++ b/apps/catalog/migrations/0002_brand_production_photo_brand_statement_doc.py
@@ -0,0 +1,23 @@
+# Generated by Django 5.1.15 on 2026-09-23 15:24
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('catalog', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='brand',
+            name='production_photo',
+            field=models.ImageField(blank=True, null=True, upload_to='brands/verification/', verbose_name='Фото производства'),
+        ),
+        migrations.AddField(
+            model_name='brand',
+            name='statement_doc',
+            field=models.FileField(blank=True, null=True, upload_to='brands/verification/', verbose_name='Выписка/справка'),
+        ),
+    ]
diff --git a/apps/catalog/models.py b/apps/catalog/models.py
index 851fd22..2ff2114 100644
--- a/apps/catalog/models.py
+++ b/apps/catalog/models.py
@@ -83,6 +83,14 @@ class Brand(models.Model):
         'Статус верификации', max_length=20,
         choices=VerificationStatus.choices, default=VerificationStatus.PENDING,
     )
+    production_photo = models.ImageField(
+        'Фото производства', upload_to='brands/verification/',
+        blank=True, null=True,
+    )
+    statement_doc = models.FileField(
+        'Выписка/справка', upload_to='brands/verification/',
+        blank=True, null=True,
+    )
     badges = models.JSONField('Знаки', default=list, blank=True)
     rating = models.DecimalField('Рейтинг', max_digits=3, decimal_places=2, default=0)
 
diff --git a/config/urls.py b/config/urls.py
index 9752efc..1c2e218 100644
--- a/config/urls.py
+++ b/config/urls.py
@@ -6,6 +6,7 @@ from django.urls import include, path
 urlpatterns = [
     path('admin/', admin.site.urls),
     path('', include('apps.catalog.urls')),
+    path('accounts/', include('apps.accounts.urls')),
 ]
 
 if settings.DEBUG:
diff --git a/static/css/style.css b/static/css/style.css
index 7f5f286..2195667 100644
--- a/static/css/style.css
+++ b/static/css/style.css
@@ -2,10 +2,14 @@
 
 :root {
   --color-bg: #ffffff;
-  --color-text: #1a1a1a;
+  --color-text: #111827;
   --color-muted: #6b7280;
-  --color-primary: #e11d48;
-  --color-primary-dark: #be123c;
+  --color-primary: #0e9f6e;
+  --color-primary-dark: #0b7a55;
+  --color-accent: #f59e0b;
+  --color-success: #16a34a;
+  --color-warning: #f59e0b;
+  --color-danger: #dc2626;
   --color-border: #e5e7eb;
   --radius: 12px;
   --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
@@ -83,8 +87,8 @@ body {
   display: block;
   padding: 24px;
   border-radius: var(--radius);
-  background: linear-gradient(135deg, #fecdd3, #fda4af);
-  color: #881337;
+  background: linear-gradient(135deg, #d1fae5, #a7f3d0);
+  color: #065f46;
   text-decoration: none;
   font-weight: 600;
 }
@@ -138,4 +142,42 @@ body {
 @media (min-width: 768px) {
   .hero h1 { font-size: 40px; }
   .banners { grid-template-columns: repeat(3, 1fr); }
-}
\ No newline at end of file
+}
+
+/* Форма регистрации продавца */
+.step-indicator {
+  color: var(--color-muted);
+  font-size: 14px;
+  margin: 8px 0 16px;
+}
+.reg-form {
+  max-width: 560px;
+  display: grid;
+  gap: 14px;
+  margin: 16px 0 32px;
+}
+.reg-form label { font-weight: 600; font-size: 14px; }
+.reg-form input,
+.reg-form select,
+.reg-form textarea {
+  width: 100%;
+  padding: 10px 12px;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius);
+  font-size: 15px;
+  font-family: inherit;
+}
+.reg-form .helptext { color: var(--color-muted); font-size: 13px; }
+.reg-form .errorlist { color: var(--color-danger); font-size: 13px; margin: 4px 0 0; padding-left: 18px; }
+.reg-actions {
+  display: flex;
+  gap: 12px;
+  align-items: center;
+  margin-top: 8px;
+}
+.btn-ghost {
+  background: transparent;
+  color: var(--color-primary);
+  border: 1px solid var(--color-primary);
+}
+.btn-ghost:hover { background: #f0fdf4; color: var(--color-primary-dark); }
\ No newline at end of file
diff --git a/templates/accounts/seller_register.html b/templates/accounts/seller_register.html
new file mode 100644
index 0000000..dbd5191
--- /dev/null
+++ b/templates/accounts/seller_register.html
@@ -0,0 +1,19 @@
+{% extends 'base.html' %}
+{% block title %}Регистрация продавца{% endblock %}
+{% block content %}
+  <h1>Регистрация продавца</h1>
+  <p class="step-indicator">Шаг {{ step }} из {{ total_steps }}</p>
+
+  <form method="post" enctype="multipart/form-data" class="reg-form">
+    {% csrf_token %}
+    {{ form.as_p }}
+    <div class="reg-actions">
+      {% if step > 1 %}
+        <a class="btn btn-ghost" href="?step={{ step|add:"-1" }}">Назад</a>
+      {% endif %}
+      <button class="btn" type="submit">
+        {% if step == total_steps %}Отправить на модерацию{% else %}Далее{% endif %}
+      </button>
+    </div>
+  </form>
+{% endblock %}
\ No newline at end of file
diff --git a/templates/accounts/seller_register_done.html b/templates/accounts/seller_register_done.html
new file mode 100644
index 0000000..483ee30
--- /dev/null
+++ b/templates/accounts/seller_register_done.html
@@ -0,0 +1,8 @@
+{% extends 'base.html' %}
+{% block title %}Заявка отправлена{% endblock %}
+{% block content %}
+  <h1>Заявка отправлена</h1>
+  <p>Ваша заявка на участие принята и находится на проверке модератором.
+     Статус можно отслеживать в личном кабинете.</p>
+  <a class="btn" href="{% url 'catalog:home' %}">На главную</a>
+{% endblock %}
\ No newline at end of file
diff --git a/templates/base.html b/templates/base.html
index 947b1f3..e3a3ab4 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -13,6 +13,7 @@
       <a class="logo" href="{% url 'catalog:home' %}">Создано&nbsp;молодыми</a>
       <nav class="nav">
         <a href="{% url 'catalog:catalog' %}">Каталог</a>
+        <a href="{% url 'accounts:seller_register' %}">Стать продавцом</a>
         {% if user.is_authenticated %}
           <span class="nav-user">{{ user.full_name|default:user.username }}</span>
           <a href="{% url 'admin:index' %}">Админка</a>