diff --git a/DESIGN.md b/DESIGN.md
index 400a051..440764a 100644
--- a/DESIGN.md
+++ b/DESIGN.md
@@ -22,6 +22,8 @@ not affiliated with Wix and must never present itself as such.
 
 ## 1. Principles
 
+0. **Mobile only.** One column, one container, thumb-reachable actions, no desktop layout and
+   no marketing site. See §4 — this constrains every other decision here.
 1. **Blue means action.** `brand-500` is reserved for things the user can do. It is never
    decoration, never a background wash for a whole section, never body text.
 2. **Ink is near-black, not grey.** Headings sit at `ink-950` (`#000624`) — black with a blue
@@ -151,19 +153,35 @@ Display sizes use `clamp()` so one token works from 360px to desktop.
 
 ## 4. Space and layout
 
-An **8px grid**. The only legal spacing values are `4 8 12 16 24 32 40 56 72 96 128`. Anything
-else is a bug.
+**Linkder is a mobile-only product.** There is no desktop layout, no marketing site and no
+responsive breakpoint work. Design for a 360–430px viewport and nothing else. On a wider
+screen the app renders as a single 480px column centred on `ink-50` — that is a courtesy for
+someone who opened it on a laptop, not a layout to design for.
 
-| Container | Width | Used for |
+Concretely, this bans:
+
+- Multi-column grids. Everything is one column. A 2-up grid is allowed only for paired
+  numeric fields (from/to, rate/years) and stat tiles.
+- `md:` / `lg:` variants that change structure. Type already scales with `clamp()`.
+- Sticky desktop nav bars with link lists, mega-footers, hero sections, feature grids.
+
+An **8px grid**. The only legal spacing values are `4 8 12 16 24 32 40 56 72`. Anything else
+is a bug.
+
+| Token | Width | Used for |
 |---|---|---|
-| `prose` | 680px | Reading, forms, single-column flows |
-| `app` | 1080px | Dashboards, lists |
-| `wide` | 1280px | Marketing sections |
+| `app` | 480px | Every screen. There is no second container. |
 
-- Page gutter: **24px** mobile, **32px** ≥768px.
-- Vertical rhythm between page sections: **72px** mobile, **96px** desktop.
+- Page gutter: **20px**. One value, all screens.
+- Vertical rhythm between blocks within a screen: **32px**. Between major groups: **40px**.
 - Gap between sibling cards in a list: **12px**.
 - Label → control: **8px**. Control → helper text: **8px**. Field → field: **24px**.
+- Bottom of scroll content clears the tab bar by **88px** (`pb-22`) so nothing hides under it.
+
+### 4.1 Safe areas
+
+The tab bar and any fixed footer pad with `env(safe-area-inset-bottom)`. The app bar pads with
+`env(safe-area-inset-top)`. Never assume the viewport edge is reachable.
 
 ---
 
@@ -253,16 +271,26 @@ Selection must never rely on fill alone.
 
 Title in `h4`, body in `body-sm` `ink-600`.
 
-### 6.6 Navigation
+### 6.6 App bar
 
-Sticky top bar, 72px tall, `ink-0` at 88% opacity with `backdrop-blur(12px)`, hairline bottom
-border. Wordmark left in Display 700 `-0.02em`. Primary CTA right as a pill. Mobile collapses
-links; the CTA stays visible in the bar.
+Fixed top, **56px** plus top safe-area inset. `page` surface at 88% opacity with
+`backdrop-blur(12px)` and a hairline bottom border.
 
-### 6.7 Footer
+Two layouts only:
 
-`ink-950` surface, white text, secondary links `ink-400`, 72px top padding, 40px bottom,
-4-up column grid collapsing to 1-up under 640px.
+- **Root screens** — screen title left in `h4`, at most one icon action right.
+- **Pushed screens** — 44px back chevron left, centred title in `h4`, optional icon action right.
+
+No link lists. No CTA button in the bar — the primary action lives in the screen or the tab bar.
+
+### 6.7 Tab bar
+
+Fixed bottom, **56px** plus bottom safe-area inset, `page` surface, hairline top border. Two
+to five destinations, each a 44px-minimum target with a 24px icon over a `meta` label. Active
+tab is `brand-500` icon + label; inactive is `ink-600`. The active state carries both colour and
+weight, never colour alone.
+
+The tab bar is the app's only persistent navigation. There is no footer.
 
 ### 6.8 Deck card
 
@@ -311,6 +339,10 @@ deck's drag is essential and stays; its spring flattens under reduced motion.
 | Placeholder standing in for a label | Visible `<label>` every time |
 | Arbitrary values like `py-[13px]` | The 8px scale |
 | A second accent colour | Blue is the only accent |
+| Multi-column grids, `md:` structure changes | One column, always |
+| A marketing hero or feature grid | This is an app, not a website |
+| A footer | The tab bar is the only persistent nav |
+| An action out of thumb reach | Primary actions sit low, near the tab bar |
 
 ---
 
@@ -321,7 +353,7 @@ deck's drag is essential and stays; its spring flattens under reduced motion.
 | Token definitions (`@theme`), base layer, dark mode | `apps/web/src/styles/globals.css` |
 | Font loading, chrome wiring | `apps/web/src/app/layout.tsx` |
 | Button, Input, Card, Chip, Banner, Field primitives | `apps/web/src/components/ui/` |
-| Site header and footer | `apps/web/src/components/chrome/` |
+| App bar and tab bar | `apps/web/src/components/chrome/` |
 
 Screens compose primitives. A screen that writes its own `rounded-xl bg-[#...]` has bypassed the
 system — fix the primitive instead.
diff --git a/apps/web/src/app/deck/[jobId]/page.tsx b/apps/web/src/app/deck/[jobId]/page.tsx
index 16fae64..c28b440 100644
--- a/apps/web/src/app/deck/[jobId]/page.tsx
+++ b/apps/web/src/app/deck/[jobId]/page.tsx
@@ -1,8 +1,7 @@
 import { notFound, redirect } from 'next/navigation';
-import Link from 'next/link';
-import { ArrowLeft } from 'lucide-react';
 import { TRPCError } from '@trpc/server';
 import { getApi } from '@/server/caller';
+import { DeckShell } from '@/components/chrome/app-shell';
 import { DeckClient } from './deck-client';
 
 export const dynamic = 'force-dynamic';
@@ -26,31 +25,19 @@ export default async function DeckPage({ params }: { params: Promise<{ jobId: st
   }
 
   return (
-    <main className="mx-auto flex min-h-dvh max-w-2xl flex-col px-4 py-6">
-      <header className="mb-6">
-        <Link
-          href="/jobs"
-          className="mb-4 inline-flex items-center gap-1.5 text-sm text-[var(--muted)] hover:text-[var(--fg)]"
-        >
-          <ArrowLeft className="h-4 w-4" aria-hidden />
-          My jobs
-        </Link>
-        <p className="text-sm text-[var(--muted)]">
-          {job.category.name} · {job.addressText}
-        </p>
-        <h1 className="text-xl font-semibold">{job.title}</h1>
+    <DeckShell>
+      <h1 className="text-h3">{job.title}</h1>
+      <p className="mb-4 mt-1 text-body-sm text-muted">
+        {job.category.name} · {job.addressText}
         {job.pendingRequests > 0 && (
-          <p className="mt-1 text-sm text-[var(--muted)]">
-            {job.pendingRequests} pro{job.pendingRequests === 1 ? '' : 's'} already considering this
-          </p>
+          <>
+            {' · '}
+            {job.pendingRequests} pro{job.pendingRequests === 1 ? '' : 's'} considering this
+          </>
         )}
-      </header>
+      </p>
 
       <DeckClient jobId={jobId} initialCards={deck.cards} />
-
-      <p className="mt-8 text-center text-xs text-[var(--muted)]">
-        Swipe right to send this job to a pro, left to pass. Drag the card or use the buttons.
-      </p>
-    </main>
+    </DeckShell>
   );
 }
diff --git a/apps/web/src/app/jobs/new/form.tsx b/apps/web/src/app/jobs/new/form.tsx
index 9d08432..5bfb4f6 100644
--- a/apps/web/src/app/jobs/new/form.tsx
+++ b/apps/web/src/app/jobs/new/form.tsx
@@ -2,10 +2,20 @@
 
 import { useState } from 'react';
 import { useRouter } from 'next/navigation';
-import { Loader2 } from 'lucide-react';
 import type { RouterOutputs } from '@/lib/trpc';
 import { api } from '@/lib/trpc';
-import { cn } from '@/lib/utils';
+import {
+  Button,
+  Chip,
+  Field,
+  FieldNote,
+  FieldSet,
+  FormError,
+  Input,
+  OptionCard,
+  StickyAction,
+  Textarea,
+} from '@/components/ui';
 
 type Categories = RouterOutputs['job']['categories'];
 
@@ -65,44 +75,34 @@ export function NewJobForm({ categories }: { categories: Categories }) {
   }
 
   return (
-    <form onSubmit={submit} className="mt-8 flex flex-col gap-5">
-      <fieldset className="flex flex-col gap-2">
-        <legend className="text-sm font-medium">Trade</legend>
-        <div className="mt-1 flex flex-wrap gap-2">
+    <form onSubmit={submit} className="flex flex-col gap-6">
+      <FieldSet label="Trade">
+        <div className="flex flex-wrap gap-2">
           {categories.map((c) => (
-            <button
+            <Chip
               key={c.id}
-              type="button"
+              selected={categoryId === c.id}
               onClick={() => setCategoryId(c.id)}
-              className={cn(
-                'rounded-full border px-4 py-2 text-sm transition',
-                categoryId === c.id
-                  ? 'border-[var(--color-brand-500)] bg-[var(--color-brand-500)]/10 font-medium'
-                  : 'border-[var(--border)]',
-              )}
             >
               {c.name}
-            </button>
+            </Chip>
           ))}
         </div>
-      </fieldset>
+      </FieldSet>
 
-      <label className="flex flex-col gap-1.5">
-        <span className="text-sm font-medium">Short summary</span>
-        <input
+      <Field label="Short summary">
+        <Input
           value={title}
           onChange={(e) => setTitle(e.target.value)}
           required
           minLength={5}
           maxLength={120}
           placeholder="Kitchen sink leaking under the cupboard"
-          className={inputClass}
         />
-      </label>
+      </Field>
 
-      <label className="flex flex-col gap-1.5">
-        <span className="text-sm font-medium">What is wrong?</span>
-        <textarea
+      <Field label="What is wrong?">
+        <Textarea
           value={description}
           onChange={(e) => setDescription(e.target.value)}
           required
@@ -110,99 +110,77 @@ export function NewJobForm({ categories }: { categories: Categories }) {
           maxLength={4000}
           rows={5}
           placeholder="The more detail you give, the more accurate the quotes you get back."
-          className={inputClass}
         />
-        <span className="text-xs text-[var(--muted)]">{description.length}/4000, minimum 20</span>
-      </label>
+        <FieldNote>{description.length}/4000, minimum 20</FieldNote>
+      </Field>
 
-      <fieldset className="flex flex-col gap-2">
-        <legend className="text-sm font-medium">How soon?</legend>
-        <div className="mt-1 flex flex-col gap-2">
+      <FieldSet label="How soon?">
+        <div className="flex flex-col gap-3">
           {URGENCIES.map((u) => (
-            <button
+            <OptionCard
               key={u.value}
-              type="button"
+              selected={urgency === u.value}
+              title={u.label}
+              body={u.hint}
               onClick={() => setUrgency(u.value)}
-              className={cn(
-                'rounded-xl border px-4 py-3 text-left text-sm transition',
-                urgency === u.value
-                  ? 'border-[var(--color-brand-500)] bg-[var(--color-brand-500)]/10'
-                  : 'border-[var(--border)]',
-              )}
-            >
-              <span className="block font-medium">{u.label}</span>
-              <span className="text-xs text-[var(--muted)]">{u.hint}</span>
-            </button>
+            />
           ))}
         </div>
-      </fieldset>
+      </FieldSet>
 
-      <label className="flex flex-col gap-1.5">
-        <span className="text-sm font-medium">Address</span>
-        <span className="text-xs text-[var(--muted)]">
-          Only shared with a pro once you have booked them.
-        </span>
-        <input
-          value={addressText}
-          onChange={(e) => setAddressText(e.target.value)}
-          required
-          minLength={3}
-          maxLength={255}
-          className={inputClass}
-        />
-        <button
+      <div className="flex flex-col gap-2">
+        <Field label="Address" hint="Only shared with a pro once you have booked them.">
+          <Input
+            value={addressText}
+            onChange={(e) => setAddressText(e.target.value)}
+            required
+            minLength={3}
+            maxLength={255}
+          />
+        </Field>
+        <Button
           type="button"
+          variant="ghost"
+          size="sm"
+          className="self-start"
           onClick={() =>
             navigator.geolocation?.getCurrentPosition(
               (pos) => setLocation({ lat: pos.coords.latitude, lng: pos.coords.longitude }),
               () => setError('We could not get your location, so we will search from the centre.'),
             )
           }
-          className="self-start text-sm text-[var(--color-brand-500)] underline underline-offset-4"
         >
           Use my current location
-        </button>
-      </label>
+        </Button>
+      </div>
 
-      <fieldset className="grid grid-cols-2 gap-3">
-        <legend className="mb-2 text-sm font-medium">Budget (optional)</legend>
-        <label className="flex flex-col gap-1.5">
-          <span className="text-xs text-[var(--muted)]">From €</span>
-          <input
-            value={budgetMin}
-            onChange={(e) => setBudgetMin(e.target.value.replace(/[^0-9.]/g, ''))}
-            inputMode="decimal"
-            className={inputClass}
-          />
-        </label>
-        <label className="flex flex-col gap-1.5">
-          <span className="text-xs text-[var(--muted)]">To €</span>
-          <input
-            value={budgetMax}
-            onChange={(e) => setBudgetMax(e.target.value.replace(/[^0-9.]/g, ''))}
-            inputMode="decimal"
-            className={inputClass}
-          />
-        </label>
-      </fieldset>
+      <FieldSet label="Budget (optional)">
+        <div className="grid grid-cols-2 gap-3">
+          <Field label="From €">
+            <Input
+              value={budgetMin}
+              onChange={(e) => setBudgetMin(e.target.value.replace(/[^0-9.]/g, ''))}
+              inputMode="decimal"
+            />
+          </Field>
+          <Field label="To €">
+            <Input
+              value={budgetMax}
+              onChange={(e) => setBudgetMax(e.target.value.replace(/[^0-9.]/g, ''))}
+              inputMode="decimal"
+            />
+          </Field>
+        </div>
+      </FieldSet>
 
-      {error && (
-        <p role="alert" className="text-sm text-[var(--color-stop-500)]">
-          {error}
-        </p>
-      )}
+      {error && <FormError>{error}</FormError>}
 
-      <button
-        type="submit"
-        disabled={create.isPending || !categoryId}
-        className="flex items-center justify-center gap-2 rounded-xl bg-[var(--color-brand-500)] px-5 py-3 font-medium text-white transition hover:bg-[var(--color-brand-600)] disabled:opacity-60"
-      >
-        {create.isPending && <Loader2 className="h-4 w-4 animate-spin" aria-hidden />}
-        Find me a pro
-      </button>
+      {/* §9 — the primary action stays in thumb reach on a long form. */}
+      <StickyAction>
+        <Button type="submit" size="lg" block busy={create.isPending} disabled={!categoryId}>
+          Find me a pro
+        </Button>
+      </StickyAction>
     </form>
   );
 }
-
-const inputClass =
-  'w-full rounded-xl border border-[var(--border)] bg-[var(--card)] px-4 py-3 text-base outline-none focus:border-[var(--color-brand-500)]';
diff --git a/apps/web/src/app/jobs/new/page.tsx b/apps/web/src/app/jobs/new/page.tsx
index d9258bb..5b652c3 100644
--- a/apps/web/src/app/jobs/new/page.tsx
+++ b/apps/web/src/app/jobs/new/page.tsx
@@ -1,5 +1,7 @@
 import { redirect } from 'next/navigation';
 import { getApi } from '@/server/caller';
+import { AppShell } from '@/components/chrome/app-shell';
+import { ScreenIntro } from '@/components/ui';
 import { NewJobForm } from './form';
 
 export const metadata = { title: 'Post a job' };
@@ -19,12 +21,11 @@ export default async function NewJobPage() {
   const categories = await api.job.categories();
 
   return (
-    <main className="mx-auto max-w-lg px-6 py-10">
-      <h1 className="text-2xl font-semibold tracking-tight">What needs doing?</h1>
-      <p className="mt-2 text-sm text-[var(--muted)]">
+    <AppShell title="Post a job">
+      <ScreenIntro>
         Describe it once. We will show you verified pros nearby who can take it on.
-      </p>
+      </ScreenIntro>
       <NewJobForm categories={categories} />
-    </main>
+    </AppShell>
   );
 }
diff --git a/apps/web/src/app/jobs/page.tsx b/apps/web/src/app/jobs/page.tsx
index e286316..a351725 100644
--- a/apps/web/src/app/jobs/page.tsx
+++ b/apps/web/src/app/jobs/page.tsx
@@ -1,17 +1,21 @@
 import Link from 'next/link';
 import { redirect } from 'next/navigation';
-import { ArrowRight, Plus } from 'lucide-react';
+import { ChevronRight, Plus } from 'lucide-react';
 import { getApi } from '@/server/caller';
+import { AppShell } from '@/components/chrome/app-shell';
+import { buttonClasses, EmptyState } from '@/components/ui';
+import { cn } from '@/lib/utils';
 
 export const metadata = { title: 'Your jobs' };
 export const dynamic = 'force-dynamic';
 
-const STATUS_LABEL: Record<string, string> = {
-  open: 'Looking for pros',
-  matched: 'Pros interested',
-  booked: 'Booked',
-  completed: 'Done',
-  cancelled: 'Cancelled',
+/** Label plus the tint it carries. §8 — status is never colour alone. */
+const STATUS: Record<string, { label: string; className: string }> = {
+  open: { label: 'Looking for pros', className: 'border-brand-200 bg-brand-100 text-ink-950' },
+  matched: { label: 'Pros interested', className: 'border-go-100 bg-go-50 text-go-700' },
+  booked: { label: 'Booked', className: 'border-go-100 bg-go-50 text-go-700' },
+  completed: { label: 'Done', className: 'border-hairline bg-inset text-muted' },
+  cancelled: { label: 'Cancelled', className: 'border-stop-100 bg-stop-50 text-stop-600' },
 };
 
 export default async function JobsPage() {
@@ -25,45 +29,67 @@ export default async function JobsPage() {
   }
 
   return (
-    <main className="mx-auto max-w-2xl px-6 py-10">
-      <div className="flex items-center justify-between gap-4">
-        <h1 className="text-2xl font-semibold tracking-tight">Your jobs</h1>
+    <AppShell title="Your jobs">
+      {jobs.length === 0 ? (
+        <EmptyState
+          title="No jobs yet"
+          body="Post a job and we will build you a deck of verified pros who cover your area."
+          action={
+            <Link
+              href="/jobs/new"
+              className={cn('mt-2', buttonClasses({ variant: 'primary', size: 'md' }))}
+            >
+              Post a job
+            </Link>
+          }
+        />
+      ) : (
+        <>
         <Link
           href="/jobs/new"
-          className="inline-flex items-center gap-1.5 rounded-xl bg-[var(--color-brand-500)] px-4 py-2.5 text-sm font-medium text-white"
+          className={cn('mb-4', buttonClasses({ variant: 'primary', size: 'md', block: true }))}
         >
-          <Plus className="h-4 w-4" aria-hidden />
+          <Plus className="h-5 w-5" aria-hidden />
           Post a job
         </Link>
-      </div>
-
-      {jobs.length === 0 ? (
-        <p className="mt-10 rounded-2xl border border-dashed border-[var(--border)] p-8 text-center text-sm text-[var(--muted)]">
-          Nothing yet. Post a job and start swiping.
-        </p>
-      ) : (
-        <ul className="mt-6 space-y-2">
-          {jobs.map((job) => (
-            <li key={job.id}>
-              <Link
-                href={`/deck/${job.id}`}
-                className="group flex items-center justify-between gap-4 rounded-xl border border-[var(--border)] bg-[var(--card)] px-4 py-3 transition hover:border-[var(--color-brand-500)]"
-              >
-                <span>
-                  <span className="block font-medium">{job.title}</span>
-                  <span className="block text-sm text-[var(--muted)]">
-                    {STATUS_LABEL[job.status] ?? job.status} · {job.addressText}
+        <ul className="flex flex-col gap-3">
+          {jobs.map((job) => {
+            const status = STATUS[job.status] ?? {
+              label: job.status,
+              className: 'border-hairline bg-inset text-muted',
+            };
+            return (
+              <li key={job.id}>
+                <Link
+                  href={`/deck/${job.id}`}
+                  className={cn(
+                    'flex items-center justify-between gap-3 rounded-card border border-hairline',
+                    'bg-raised p-4 transition-[border-color] duration-[120ms] ease-standard',
+                    'active:border-brand-500',
+                  )}
+                >
+                  <span className="min-w-0">
+                    <span className="block font-display text-h4">{job.title}</span>
+                    <span className="mt-2 flex flex-wrap items-center gap-2">
+                      <span
+                        className={cn(
+                          'inline-flex items-center rounded-pill border px-3 py-1 text-meta',
+                          status.className,
+                        )}
+                      >
+                        {status.label}
+                      </span>
+                      <span className="truncate text-body-sm text-muted">{job.addressText}</span>
+                    </span>
                   </span>
-                </span>
-                <ArrowRight
-                  className="h-4 w-4 shrink-0 text-[var(--color-brand-500)] transition group-hover:translate-x-0.5"
-                  aria-hidden
-                />
-              </Link>
-            </li>
-          ))}
+                  <ChevronRight className="h-5 w-5 shrink-0 text-accent" aria-hidden />
+                </Link>
+              </li>
+            );
+          })}
         </ul>
+        </>
       )}
-    </main>
+    </AppShell>
   );
 }
diff --git a/apps/web/src/app/layout.tsx b/apps/web/src/app/layout.tsx
index e509359..c66902d 100644
--- a/apps/web/src/app/layout.tsx
+++ b/apps/web/src/app/layout.tsx
@@ -1,7 +1,25 @@
 import type { Metadata, Viewport } from 'next';
+import { Wix_Madefor_Display, Wix_Madefor_Text } from 'next/font/google';
 import { TRPCProvider } from '@/lib/trpc';
 import '@/styles/globals.css';
 
+/**
+ * DESIGN.md §3.1. Self-hosted through next/font rather than a <link> to
+ * fonts.googleapis.com — that link is a render-blocking round trip on the
+ * critical path, and the deck is the first thing people see.
+ */
+const display = Wix_Madefor_Display({
+  subsets: ['latin'],
+  display: 'swap',
+  variable: '--font-madefor-display',
+});
+
+const text = Wix_Madefor_Text({
+  subsets: ['latin'],
+  display: 'swap',
+  variable: '--font-madefor-text',
+});
+
 export const metadata: Metadata = {
   title: {
     default: 'Linkder — hire a verified local pro',
@@ -9,23 +27,31 @@ export const metadata: Metadata = {
   },
   description:
     'Describe the job once, then swipe through verified local plumbers, electricians and handymen. Quote, book and pay in one place.',
+  appleWebApp: { capable: true, statusBarStyle: 'default', title: 'Linkder' },
 };
 
 export const viewport: Viewport = {
   themeColor: [
-    { media: '(prefers-color-scheme: light)', color: '#fbfbfd' },
-    { media: '(prefers-color-scheme: dark)', color: '#121319' },
+    { media: '(prefers-color-scheme: light)', color: '#ffffff' },
+    { media: '(prefers-color-scheme: dark)', color: '#000624' },
   ],
   width: 'device-width',
   initialScale: 1,
   // The deck is a drag surface — double-tap zoom fights it.
   maximumScale: 1,
+  // Required for env(safe-area-inset-*) to report anything but zero. §4.1
+  viewportFit: 'cover',
 };
 
 export default function RootLayout({ children }: { children: React.ReactNode }) {
   return (
-    <html lang="en">
-      <body className="min-h-dvh antialiased">
+    <html lang="en" className={`${display.variable} ${text.variable}`}>
+      {/*
+        The app is a single 480px column, but the column is owned by the screen
+        shells rather than by this layout — the entry screen renders a phone
+        illustration that has to go full-bleed past it. §4
+      */}
+      <body className="bg-sunken text-strong antialiased">
         <TRPCProvider>{children}</TRPCProvider>
       </body>
     </html>
diff --git a/apps/web/src/app/onboarding/page.tsx b/apps/web/src/app/onboarding/page.tsx
index d49b7fc..3cddc18 100644
--- a/apps/web/src/app/onboarding/page.tsx
+++ b/apps/web/src/app/onboarding/page.tsx
@@ -1,5 +1,6 @@
 import { redirect } from 'next/navigation';
 import { getApi } from '@/server/caller';
+import { BareShell } from '@/components/chrome/app-shell';
 import { RoleChooser } from './role-chooser';
 
 export const metadata = { title: 'Welcome' };
@@ -27,12 +28,12 @@ export default async function OnboardingPage() {
   if (me.role === 'pro') redirect(me.hasProProfile ? '/pro' : '/pro/onboarding');
 
   return (
-    <main className="mx-auto flex min-h-dvh max-w-md flex-col justify-center px-6 py-12">
-      <h1 className="text-2xl font-semibold tracking-tight">What brings you here?</h1>
-      <p className="mt-2 text-sm text-[var(--muted)]">
+    <BareShell>
+      <h1 className="text-h1">What brings you here?</h1>
+      <p className="mt-3 text-body text-muted">
         You can only pick once, so choose the one that fits.
       </p>
       <RoleChooser />
-    </main>
+    </BareShell>
   );
 }
diff --git a/apps/web/src/app/onboarding/role-chooser.tsx b/apps/web/src/app/onboarding/role-chooser.tsx
index cce9fe6..6982257 100644
--- a/apps/web/src/app/onboarding/role-chooser.tsx
+++ b/apps/web/src/app/onboarding/role-chooser.tsx
@@ -3,6 +3,7 @@
 import { useRouter } from 'next/navigation';
 import { Hammer, Home } from 'lucide-react';
 import { api } from '@/lib/trpc';
+import { FormError, OptionCard } from '@/components/ui';
 
 export function RoleChooser() {
   const router = useRouter();
@@ -14,55 +15,22 @@ export function RoleChooser() {
   });
 
   return (
-    <div className="mt-8 flex flex-col gap-3">
-      <Choice
+    <div className="mt-10 flex flex-col gap-3">
+      <OptionCard
         icon={<Home className="h-6 w-6" aria-hidden />}
         title="I need something fixed"
         body="Post a job and swipe through verified local pros."
         disabled={setRole.isPending}
         onClick={() => setRole.mutate({ role: 'client' })}
       />
-      <Choice
+      <OptionCard
         icon={<Hammer className="h-6 w-6" aria-hidden />}
         title="I do the fixing"
         body="Get sent local jobs that match your trade and your area."
         disabled={setRole.isPending}
         onClick={() => setRole.mutate({ role: 'pro' })}
       />
-      {setRole.error && (
-        <p role="alert" className="text-sm text-[var(--color-stop-500)]">
-          {setRole.error.message}
-        </p>
-      )}
+      {setRole.error && <FormError>{setRole.error.message}</FormError>}
     </div>
   );
 }
-
-function Choice({
-  icon,
-  title,
-  body,
-  disabled,
-  onClick,
-}: {
-  icon: React.ReactNode;
-  title: string;
-  body: string;
-  disabled: boolean;
-  onClick: () => void;
-}) {
-  return (
-    <button
-      type="button"
-      onClick={onClick}
-      disabled={disabled}
-      className="flex items-start gap-4 rounded-2xl border border-[var(--border)] bg-[var(--card)] p-5 text-left transition hover:border-[var(--color-brand-500)] disabled:opacity-60"
-    >
-      <span className="mt-0.5 text-[var(--color-brand-500)]">{icon}</span>
-      <span>
-        <span className="block font-medium">{title}</span>
-        <span className="mt-0.5 block text-sm text-[var(--muted)]">{body}</span>
-      </span>
-    </button>
-  );
-}
diff --git a/apps/web/src/app/page.tsx b/apps/web/src/app/page.tsx
index c22b8ec..45499a7 100644
--- a/apps/web/src/app/page.tsx
+++ b/apps/web/src/app/page.tsx
@@ -1,53 +1,30 @@
-import Link from 'next/link';
-import { ArrowRight } from 'lucide-react';
 import { getApi } from '@/server/caller';
+import { PhoneFrame } from '@/components/chrome/phone-frame';
+import { ShowcaseDeck } from './showcase-deck';
 
 export const dynamic = 'force-dynamic';
 
+/**
+ * The entry screen.
+ *
+ * Not a marketing page. This is the product itself, running: a phone with a
+ * live, draggable deck of real verified pros inside it. Linkder's whole promise
+ * is a gesture, and a paragraph describing a gesture is worth nothing next to
+ * being able to do it.
+ *
+ * On a phone the frame collapses and the deck simply is the screen (see
+ * PhoneFrame) — this is a mobile product, and the illustration exists only so
+ * the desktop visitor understands that.
+ */
 export default async function Home() {
   const api = await getApi();
-  const categories = await api.job.categories();
+  const { cards } = await api.deck.showcase();
 
   return (
-    <main className="mx-auto max-w-2xl px-6 py-16">
-      <p className="text-sm font-medium text-[var(--color-brand-500)]">Linkder</p>
-      <h1 className="mt-2 text-4xl font-semibold tracking-tight text-balance">
-        Describe the job once. Swipe through verified local pros.
-      </h1>
-      <p className="mt-4 text-lg text-[var(--muted)] text-pretty">
-        Every pro on the deck has had their ID, trade licence and insurance checked. Quote, book and
-        pay in one place — your money is held until the work is done.
-      </p>
-
-      <div className="mt-8 flex flex-wrap gap-3">
-        <Link
-          href="/sign-in"
-          className="rounded-xl bg-[var(--color-brand-500)] px-5 py-3 font-medium text-white transition hover:bg-[var(--color-brand-600)]"
-        >
-          Post a job
-        </Link>
-        <Link
-          href="/sign-in?next=/pro/onboarding"
-          className="inline-flex items-center gap-1.5 rounded-xl border border-[var(--border)] px-5 py-3 font-medium transition hover:border-[var(--color-brand-500)]"
-        >
-          Work with us
-          <ArrowRight className="h-4 w-4" aria-hidden />
-        </Link>
-      </div>
-
-      <section className="mt-12">
-        <h2 className="text-sm font-medium text-[var(--muted)]">Trades we cover</h2>
-        <ul className="mt-3 flex flex-wrap gap-2">
-          {categories.map((c) => (
-            <li
-              key={c.id}
-              className="rounded-full border border-[var(--border)] px-3 py-1.5 text-sm"
-            >
-              {c.name}
-            </li>
-          ))}
-        </ul>
-      </section>
-    </main>
+    <div className="flex min-h-dvh items-center justify-center sm:p-8">
+      <PhoneFrame>
+        <ShowcaseDeck cards={cards} />
+      </PhoneFrame>
+    </div>
   );
 }
diff --git a/apps/web/src/app/pro/onboarding/page.tsx b/apps/web/src/app/pro/onboarding/page.tsx
index 4f6978a..2d38e20 100644
--- a/apps/web/src/app/pro/onboarding/page.tsx
+++ b/apps/web/src/app/pro/onboarding/page.tsx
@@ -1,5 +1,7 @@
 import { redirect } from 'next/navigation';
 import { getApi } from '@/server/caller';
+import { AppShell } from '@/components/chrome/app-shell';
+import { ScreenIntro } from '@/components/ui';
 import { OnboardingWizard } from './wizard';
 
 export const metadata = { title: 'Set up your profile' };
@@ -22,22 +24,25 @@ export default async function ProOnboardingPage() {
   const [categories, profile] = await Promise.all([api.job.categories(), api.pro.me()]);
 
   // Already submitted or approved — nothing to fill in.
-  if (profile && profile.verificationStatus !== 'draft' && profile.verificationStatus !== 'rejected') {
+  if (
+    profile &&
+    profile.verificationStatus !== 'draft' &&
+    profile.verificationStatus !== 'rejected'
+  ) {
     redirect('/pro');
   }
 
   return (
-    <main className="mx-auto max-w-lg px-6 py-10">
-      <h1 className="text-2xl font-semibold tracking-tight">Set up your profile</h1>
-      <p className="mt-2 text-sm text-[var(--muted)]">
+    <AppShell title="Set up your profile">
+      <ScreenIntro>
         We check every pro&rsquo;s ID, licence and insurance before any customer sees them. It
         usually takes a day.
-      </p>
+      </ScreenIntro>
       <OnboardingWizard
         categories={categories}
         initialProfile={profile}
         hasContactableEmail={me.hasContactableEmail}
       />
-    </main>
+    </AppShell>
   );
 }
diff --git a/apps/web/src/app/pro/onboarding/wizard.tsx b/apps/web/src/app/pro/onboarding/wizard.tsx
index 3bac70c..6e2a734 100644
--- a/apps/web/src/app/pro/onboarding/wizard.tsx
+++ b/apps/web/src/app/pro/onboarding/wizard.tsx
@@ -12,6 +12,18 @@ import {
 } from '@linkder/shared';
 import { cn } from '@/lib/utils';
 import { uploadFile } from '@/lib/upload';
+import {
+  Button,
+  Chip,
+  Field,
+  FieldNote,
+  FieldSet,
+  FormError,
+  Input,
+  Section,
+  StickyAction,
+  Textarea,
+} from '@/components/ui';
 
 type Categories = RouterOutputs['job']['categories'];
 type Profile = RouterOutputs['pro']['me'];
@@ -90,21 +102,22 @@ export function OnboardingWizard({
   }
 
   return (
-    <div className="mt-8">
-      <ol className="mb-8 flex gap-2" aria-label="Progress">
+    <div>
+      <ol className="mb-10 flex gap-2" aria-label="Progress">
         {STEPS.map((label, i) => (
           <li key={label} className="flex-1">
             <div
               className={cn(
-                'h-1 rounded-full',
-                i <= step ? 'bg-[var(--color-brand-500)]' : 'bg-[var(--border)]',
+                'h-1 rounded-pill transition-colors duration-[200ms] ease-standard',
+                i <= step ? 'bg-brand-500' : 'bg-inset',
               )}
             />
             <span
               className={cn(
-                'mt-1.5 block text-xs',
-                i === step ? 'font-medium' : 'text-[var(--muted)]',
+                'mt-2 block text-meta',
+                i === step ? 'font-semibold text-strong' : 'text-muted',
               )}
+              aria-current={i === step ? 'step' : undefined}
             >
               {label}
             </span>
@@ -121,24 +134,17 @@ export function OnboardingWizard({
             {categories.map((c) => {
               const selected = categoryIds.includes(c.id);
               return (
-                <button
+                <Chip
                   key={c.id}
-                  type="button"
+                  selected={selected}
                   onClick={() =>
                     setCategoryIds((prev) =>
                       selected ? prev.filter((id) => id !== c.id) : [...prev, c.id].slice(0, 5),
                     )
                   }
-                  className={cn(
-                    'rounded-full border px-4 py-2 text-sm transition',
-                    selected
-                      ? 'border-[var(--color-brand-500)] bg-[var(--color-brand-500)]/10 font-medium'
-                      : 'border-[var(--border)]',
-                  )}
                 >
-                  {selected && <Check className="mr-1 inline h-3.5 w-3.5" aria-hidden />}
                   {c.name}
-                </button>
+                </Chip>
               );
             })}
           </div>
@@ -155,41 +161,40 @@ export function OnboardingWizard({
       {step === 1 && (
         <Section title="About you" hint="This is what a customer reads on your card.">
           <Field label="Headline" hint="e.g. Emergency plumber, 15 years in Barcelona">
-            <input
+            <Input
               value={headline}
               onChange={(e) => setHeadline(e.target.value)}
               maxLength={100}
-              className={inputClass}
             />
           </Field>
+
           <Field label="About your work">
-            <textarea
+            <Textarea
               value={bio}
               onChange={(e) => setBio(e.target.value)}
               rows={5}
               maxLength={2000}
-              className={inputClass}
             />
-            <span className="text-xs text-[var(--muted)]">{bio.length}/2000, minimum 30</span>
+            <FieldNote>{bio.length}/2000, minimum 30</FieldNote>
           </Field>
+
           <div className="grid grid-cols-2 gap-3">
             <Field label="Hourly rate (€)">
-              <input
+              <Input
                 value={hourlyRate}
                 onChange={(e) => setHourlyRate(e.target.value.replace(/[^0-9.]/g, ''))}
                 inputMode="decimal"
-                className={inputClass}
               />
             </Field>
             <Field label="Years experience">
-              <input
+              <Input
                 value={yearsExperience}
                 onChange={(e) => setYearsExperience(e.target.value.replace(/\D/g, ''))}
                 inputMode="numeric"
-                className={inputClass}
               />
             </Field>
           </div>
+
           <Field
             label={`How far will you travel? ${radiusKm} km`}
             hint="You will only be shown jobs inside this radius."
@@ -200,22 +205,25 @@ export function OnboardingWizard({
               max={MAX_SERVICE_RADIUS_M / 1000}
               value={radiusKm}
               onChange={(e) => setRadiusKm(Number(e.target.value))}
-              className="w-full"
+              className="w-full accent-brand-500"
             />
           </Field>
-          <button
+
+          <Button
             type="button"
+            variant="ghost"
+            size="sm"
+            className="self-start"
             onClick={() =>
               navigator.geolocation?.getCurrentPosition(
-                (pos) =>
-                  setLocation({ lat: pos.coords.latitude, lng: pos.coords.longitude }),
+                (pos) => setLocation({ lat: pos.coords.latitude, lng: pos.coords.longitude }),
                 () => setError('We could not get your location. The city centre will be used.'),
               )
             }
-            className="text-sm text-[var(--color-brand-500)] underline underline-offset-4"
           >
             Use my current location as my base
-          </button>
+          </Button>
+
           <Nav
             onBack={() => setStep(0)}
             busy={upsert.isPending}
@@ -251,18 +259,18 @@ export function OnboardingWizard({
           hint="We check these by hand before your profile goes live. They are never shown to customers."
         >
           {!hasContactableEmail && (
-            <Field
-              label="Email address"
-              hint="Required for pros — payout statements, tax records and dispute notices go here."
-            >
-              <input
-                type="email"
-                value={email}
-                onChange={(e) => setEmail(e.target.value)}
-                className={inputClass}
-              />
-              <button
+            <div className="flex flex-col gap-2">
+              <Field
+                label="Email address"
+                hint="Required for pros — payout statements, tax records and dispute notices go here."
+              >
+                <Input type="email" value={email} onChange={(e) => setEmail(e.target.value)} />
+              </Field>
+              <Button
                 type="button"
+                variant="ghost"
+                size="sm"
+                className="self-start"
                 onClick={async () => {
                   try {
                     await setEmailMutation.mutateAsync({ email });
@@ -272,15 +280,14 @@ export function OnboardingWizard({
                     setError((e as Error).message);
                   }
                 }}
-                className="mt-2 text-sm text-[var(--color-brand-500)] underline underline-offset-4"
               >
                 Save email
-              </button>
-            </Field>
+              </Button>
+            </div>
           )}
 
           {(['id', 'insurance', 'licence'] as const).map((kind) => (
-            <Field
+            <FieldSet
               key={kind}
               label={
                 kind === 'id'
@@ -300,80 +307,37 @@ export function OnboardingWizard({
                 }}
                 onError={setError}
               />
-            </Field>
+            </FieldSet>
           ))}
 
-          <div className="mt-6 flex gap-3">
-            <button
-              type="button"
-              onClick={() => setStep(2)}
-              className="rounded-xl border border-[var(--border)] px-5 py-3 text-sm"
-            >
-              Back
-            </button>
-            <button
-              type="button"
-              onClick={() => submit.mutate()}
-              disabled={submit.isPending}
-              className="flex flex-1 items-center justify-center gap-2 rounded-xl bg-[var(--color-brand-500)] px-5 py-3 font-medium text-white disabled:opacity-60"
-            >
-              {submit.isPending && <Loader2 className="h-4 w-4 animate-spin" aria-hidden />}
-              Submit for review
-            </button>
-          </div>
+          <StickyAction>
+            <div className="flex gap-3">
+              <Button type="button" variant="outline" size="lg" onClick={() => setStep(2)}>
+                Back
+              </Button>
+              <Button
+                type="button"
+                size="lg"
+                className="flex-1"
+                busy={submit.isPending}
+                onClick={() => submit.mutate()}
+              >
+                Submit for review
+              </Button>
+            </div>
+          </StickyAction>
         </Section>
       )}
 
       {error && (
-        <p role="alert" className="mt-4 text-sm text-[var(--color-stop-500)]">
-          {error}
-        </p>
+        <div className="mt-6">
+          <FormError>{error}</FormError>
+        </div>
       )}
     </div>
   );
 }
 
-const inputClass =
-  'w-full rounded-xl border border-[var(--border)] bg-[var(--card)] px-4 py-3 text-base outline-none focus:border-[var(--color-brand-500)]';
-
-function Section({
-  title,
-  hint,
-  children,
-}: {
-  title: string;
-  hint?: string;
-  children: React.ReactNode;
-}) {
-  return (
-    <section className="flex flex-col gap-4">
-      <div>
-        <h2 className="text-lg font-medium">{title}</h2>
-        {hint && <p className="mt-1 text-sm text-[var(--muted)]">{hint}</p>}
-      </div>
-      {children}
-    </section>
-  );
-}
-
-function Field({
-  label,
-  hint,
-  children,
-}: {
-  label: string;
-  hint?: string;
-  children: React.ReactNode;
-}) {
-  return (
-    <label className="flex flex-col gap-1.5">
-      <span className="text-sm font-medium">{label}</span>
-      {hint && <span className="text-xs text-[var(--muted)]">{hint}</span>}
-      {children}
-    </label>
-  );
-}
-
 function Nav({
   onBack,
   onNext,
@@ -384,26 +348,18 @@ function Nav({
   busy?: boolean;
 }) {
   return (
-    <div className="mt-4 flex gap-3">
-      {onBack && (
-        <button
-          type="button"
-          onClick={onBack}
-          className="rounded-xl border border-[var(--border)] px-5 py-3 text-sm"
-        >
-          Back
-        </button>
-      )}
-      <button
-        type="button"
-        onClick={() => void onNext()}
-        disabled={busy}
-        className="flex flex-1 items-center justify-center gap-2 rounded-xl bg-[var(--color-brand-500)] px-5 py-3 font-medium text-white disabled:opacity-60"
-      >
-        {busy && <Loader2 className="h-4 w-4 animate-spin" aria-hidden />}
-        Continue
-      </button>
-    </div>
+    <StickyAction>
+      <div className="flex gap-3">
+        {onBack && (
+          <Button type="button" variant="outline" size="lg" onClick={onBack}>
+            Back
+          </Button>
+        )}
+        <Button type="button" size="lg" className="flex-1" busy={busy} onClick={() => void onNext()}>
+          Continue
+        </Button>
+      </div>
+    </StickyAction>
   );
 }
 
@@ -422,15 +378,15 @@ function UploadList({
   const presign = api.upload.presign.useMutation();
 
   return (
-    <div className="flex flex-col gap-2">
+    <div className="flex flex-col gap-3">
       {existing.length > 0 && (
         <ul className="flex flex-wrap gap-2">
           {existing.map((url) => (
             <li
               key={url}
-              className="flex items-center gap-1.5 rounded-lg border border-[var(--border)] px-3 py-1.5 text-xs"
+              className="flex items-center gap-1.5 rounded-pill border border-go-100 bg-go-50 px-3 py-1.5 text-meta text-go-700"
             >
-              <Check className="h-3.5 w-3.5 text-[var(--color-go-500)]" aria-hidden />
+              <Check className="h-4 w-4" aria-hidden />
               Uploaded
             </li>
           ))}
@@ -438,8 +394,9 @@ function UploadList({
       )}
       <label
         className={cn(
-          'flex cursor-pointer items-center justify-center gap-2 rounded-xl border border-dashed',
-          'border-[var(--border)] px-4 py-6 text-sm text-[var(--muted)] hover:border-[var(--color-brand-500)]',
+          'flex cursor-pointer items-center justify-center gap-2 rounded-card border border-dashed',
+          'border-hairline px-4 py-8 text-body-sm text-muted',
+          'transition-colors duration-[120ms] ease-standard hover:border-brand-500 hover:text-strong',
         )}
       >
         {busy ? (
@@ -450,7 +407,7 @@ function UploadList({
         {busy ? 'Uploading…' : 'Choose a file'}
         <input
           type="file"
-          className="hidden"
+          className="sr-only"
           accept={kind === 'credential' ? 'image/*,application/pdf' : 'image/*'}
           onChange={async (event) => {
             const file = event.target.files?.[0];
diff --git a/apps/web/src/app/pro/page.tsx b/apps/web/src/app/pro/page.tsx
index 159cf78..f126705 100644
--- a/apps/web/src/app/pro/page.tsx
+++ b/apps/web/src/app/pro/page.tsx
@@ -1,6 +1,7 @@
 import { redirect } from 'next/navigation';
-import { Clock, ShieldCheck, XCircle } from 'lucide-react';
 import { getApi } from '@/server/caller';
+import { AppShell } from '@/components/chrome/app-shell';
+import { Banner, ScreenIntro, Stat } from '@/components/ui';
 
 export const metadata = { title: 'Your account' };
 export const dynamic = 'force-dynamic';
@@ -22,97 +23,49 @@ export default async function ProHomePage() {
   const status = profile.verificationStatus;
 
   return (
-    <main className="mx-auto max-w-lg px-6 py-10">
-      <h1 className="text-2xl font-semibold tracking-tight">{profile.headline}</h1>
+    <AppShell title="Your account">
+      <ScreenIntro>{profile.headline}</ScreenIntro>
 
       {status === 'pending' && (
-        <StatusCard
-          icon={<Clock className="h-5 w-5" aria-hidden />}
-          tone="waiting"
-          title="We are checking your documents"
-          body="This usually takes a day. We will text you the moment you are live and jobs start arriving."
-        />
+        <Banner tone="warning" title="We are checking your documents">
+          This usually takes a day. We will text you the moment you are live and jobs start
+          arriving.
+        </Banner>
       )}
       {status === 'verified' && (
-        <StatusCard
-          icon={<ShieldCheck className="h-5 w-5" aria-hidden />}
-          tone="good"
-          title="You are live"
-          body="Customers nearby can see you now. Keep your response time short — it is the second biggest factor in where you appear."
-        />
+        <Banner tone="success" title="You are live">
+          Customers nearby can see you now. Keep your response time short — it is the second
+          biggest factor in where you appear.
+        </Banner>
       )}
       {status === 'rejected' && (
-        <StatusCard
-          icon={<XCircle className="h-5 w-5" aria-hidden />}
-          tone="bad"
-          title="We could not approve your account"
-          body="Check your email for what we need. You can update your documents and submit again."
-        />
+        <Banner tone="error" title="We could not approve your account">
+          Check your email for what we need. You can update your documents and submit again.
+        </Banner>
       )}
       {status === 'suspended' && (
-        <StatusCard
-          icon={<XCircle className="h-5 w-5" aria-hidden />}
-          tone="bad"
-          title="Your account is suspended"
-          body={profile.suspendedReason ?? 'Contact support to sort this out.'}
-        />
+        <Banner tone="error" title="Your account is suspended">
+          {profile.suspendedReason ?? 'Contact support to sort this out.'}
+        </Banner>
       )}
       {status === 'draft' && (
-        <StatusCard
-          icon={<Clock className="h-5 w-5" aria-hidden />}
-          tone="waiting"
-          title="Your profile is not finished"
-          body="Finish setting up and submit it for review."
-        />
+        <Banner tone="warning" title="Your profile is not finished">
+          Finish setting up and submit it for review.
+        </Banner>
       )}
 
-      <dl className="mt-8 grid grid-cols-2 gap-4 text-sm">
+      {/* §4 — a 2-up grid is allowed for stat tiles and nothing else. */}
+      <dl className="mt-8 grid grid-cols-2 gap-3">
         <Stat label="Jobs completed" value={String(profile.completedJobs)} />
         <Stat
           label="Rating"
-          value={profile.ratingAvg ? `${Number(profile.ratingAvg).toFixed(1)} / 5` : 'No reviews yet'}
+          value={
+            profile.ratingAvg ? `${Number(profile.ratingAvg).toFixed(1)} / 5` : 'No reviews yet'
+          }
         />
         <Stat label="Travels up to" value={`${Math.round(profile.serviceRadiusM / 1000)} km`} />
         <Stat label="Rate" value={`€${(profile.hourlyRateCents / 100).toFixed(0)}/hr`} />
       </dl>
-    </main>
-  );
-}
-
-function StatusCard({
-  icon,
-  tone,
-  title,
-  body,
-}: {
-  icon: React.ReactNode;
-  tone: 'good' | 'waiting' | 'bad';
-  title: string;
-  body: string;
-}) {
-  const toneClass =
-    tone === 'good'
-      ? 'border-[var(--color-go-500)]/30 bg-[var(--color-go-500)]/10'
-      : tone === 'bad'
-        ? 'border-[var(--color-stop-500)]/30 bg-[var(--color-stop-500)]/10'
-        : 'border-[var(--border)] bg-[var(--card)]';
-
-  return (
-    <div className={`mt-6 flex gap-3 rounded-2xl border p-5 ${toneClass}`}>
-      <span className="mt-0.5 shrink-0">{icon}</span>
-      <span>
-        <span className="block font-medium">{title}</span>
-        <span className="mt-1 block text-sm text-[var(--muted)]">{body}</span>
-      </span>
-    </div>
-  );
-}
-
-function Stat({ label, value }: { label: string; value: string }) {
-  return (
-    <div className="rounded-xl border border-[var(--border)] p-4">
-      <dt className="text-xs text-[var(--muted)]">{label}</dt>
-      <dd className="mt-1 font-medium">{value}</dd>
-    </div>
+    </AppShell>
   );
 }
diff --git a/apps/web/src/app/showcase-deck.tsx b/apps/web/src/app/showcase-deck.tsx
new file mode 100644
index 0000000..7326a69
--- /dev/null
+++ b/apps/web/src/app/showcase-deck.tsx
@@ -0,0 +1,43 @@
+'use client';
+
+import { useState } from 'react';
+import Link from 'next/link';
+import type { DeckCard } from '@linkder/db';
+import { Deck } from '@/components/deck';
+import { buttonClasses } from '@/components/ui';
+
+/**
+ * The live demo deck inside the phone on the entry screen.
+ *
+ * Real pros, real ranking, real drag physics — but `onDecide` deliberately
+ * writes NOTHING. A visitor with no session swiping right must not send a job
+ * to a real tradesperson; the card simply leaves. The funnel starts when they
+ * tap "Post a job", which is where a real deck (deck.list / deck.swipe, both
+ * authenticated) takes over.
+ */
+export function ShowcaseDeck({ cards }: { cards: DeckCard[] }) {
+  const [seen, setSeen] = useState(0);
+  const done = seen >= cards.length;
+
+  return (
+    <div className="flex h-full flex-col px-4 pb-4 pt-[3.25rem]">
+      <header className="mb-3 flex shrink-0 items-baseline justify-between">
+        <p className="text-h4">Verified pros near you</p>
+        {!done && cards.length > 0 && (
+          <p className="text-meta tabular-nums text-muted">{cards.length - seen} left</p>
+        )}
+      </header>
+
+      <div className="min-h-0 flex-1">
+        <Deck cards={cards} onDecide={() => setSeen((n) => n + 1)} />
+      </div>
+
+      <Link
+        href="/jobs/new"
+        className={buttonClasses({ variant: 'primary', size: 'lg', block: true })}
+      >
+        Post a job
+      </Link>
+    </div>
+  );
+}
diff --git a/apps/web/src/app/sign-in/page.tsx b/apps/web/src/app/sign-in/page.tsx
index 216ccbd..efc9879 100644
--- a/apps/web/src/app/sign-in/page.tsx
+++ b/apps/web/src/app/sign-in/page.tsx
@@ -1,19 +1,20 @@
 import { Suspense } from 'react';
+import { BareShell } from '@/components/chrome/app-shell';
 import { SignInForm } from './sign-in-form';
 
 export const metadata = { title: 'Sign in' };
 
 export default function SignInPage() {
   return (
-    <main className="mx-auto flex min-h-dvh max-w-sm flex-col justify-center px-6 py-12">
-      <p className="text-sm font-medium text-[var(--color-brand-500)]">Linkder</p>
-      <h1 className="mt-2 text-2xl font-semibold tracking-tight">Sign in</h1>
-      <p className="mt-2 text-sm text-[var(--muted)]">
+    <BareShell>
+      <p className="text-overline uppercase text-accent">Linkder</p>
+      <h1 className="mt-3 text-h1">Sign in</h1>
+      <p className="mt-3 text-body text-muted">
         We will text you a 6-digit code. No password to forget.
       </p>
       <Suspense fallback={null}>
         <SignInForm />
       </Suspense>
-    </main>
+    </BareShell>
   );
 }
diff --git a/apps/web/src/app/sign-in/sign-in-form.tsx b/apps/web/src/app/sign-in/sign-in-form.tsx
index 1b75ce5..64ee757 100644
--- a/apps/web/src/app/sign-in/sign-in-form.tsx
+++ b/apps/web/src/app/sign-in/sign-in-form.tsx
@@ -2,8 +2,8 @@
 
 import { useState } from 'react';
 import { useRouter, useSearchParams } from 'next/navigation';
-import { Loader2 } from 'lucide-react';
 import { authClient } from '@/lib/auth-client';
+import { Button, Field, FormError, Input } from '@/components/ui';
 
 type Step = 'phone' | 'code';
 
@@ -58,98 +58,83 @@ export function SignInForm() {
   }
 
   return (
-    <div className="mt-8 flex flex-col gap-6">
+    <div className="mt-10 flex flex-col gap-6">
       {step === 'phone' ? (
-        <form onSubmit={sendCode} className="flex flex-col gap-3">
-          <label htmlFor="phone" className="text-sm font-medium">
-            Mobile number
-          </label>
-          <input
-            id="phone"
-            name="phone"
-            type="tel"
-            autoComplete="tel"
-            inputMode="tel"
-            required
-            placeholder="+34 600 123 456"
-            value={phone}
-            onChange={(e) => setPhone(e.target.value.replace(/\s/g, ''))}
-            className="rounded-xl border border-[var(--border)] bg-[var(--card)] px-4 py-3 text-base outline-none focus:border-[var(--color-brand-500)]"
-          />
-          <SubmitButton busy={busy}>Send code</SubmitButton>
+        <form onSubmit={sendCode} className="flex flex-col gap-6">
+          <Field label="Mobile number">
+            <Input
+              name="phone"
+              type="tel"
+              autoComplete="tel"
+              inputMode="tel"
+              required
+              placeholder="+34 600 123 456"
+              value={phone}
+              onChange={(e) => setPhone(e.target.value.replace(/\s/g, ''))}
+            />
+          </Field>
+          <Button type="submit" size="lg" block busy={busy}>
+            Send code
+          </Button>
         </form>
       ) : (
-        <form onSubmit={verifyCode} className="flex flex-col gap-3">
-          <label htmlFor="code" className="text-sm font-medium">
-            Enter the code we sent to {phone}
-          </label>
-          <input
-            id="code"
-            name="code"
-            type="text"
-            autoComplete="one-time-code"
-            inputMode="numeric"
-            pattern="[0-9]{6}"
-            maxLength={6}
-            required
-            autoFocus
-            placeholder="123456"
-            value={code}
-            onChange={(e) => setCode(e.target.value.replace(/\D/g, ''))}
-            className="rounded-xl border border-[var(--border)] bg-[var(--card)] px-4 py-3 text-center text-2xl tracking-[0.4em] outline-none focus:border-[var(--color-brand-500)]"
-          />
-          <SubmitButton busy={busy}>Sign in</SubmitButton>
-          <button
+        <form onSubmit={verifyCode} className="flex flex-col gap-6">
+          <Field label={`Enter the code we sent to ${phone}`}>
+            <Input
+              name="code"
+              type="text"
+              autoComplete="one-time-code"
+              inputMode="numeric"
+              pattern="[0-9]{6}"
+              maxLength={6}
+              required
+              autoFocus
+              placeholder="123456"
+              value={code}
+              onChange={(e) => setCode(e.target.value.replace(/\D/g, ''))}
+              className="text-center font-display text-h2 tracking-[0.4em] tabular-nums"
+            />
+          </Field>
+          <Button type="submit" size="lg" block busy={busy}>
+            Sign in
+          </Button>
+          <Button
             type="button"
+            variant="ghost"
+            size="sm"
             onClick={() => {
               setStep('phone');
               setCode('');
               setError(null);
             }}
-            className="text-sm text-[var(--muted)] underline underline-offset-4"
           >
             Use a different number
-          </button>
+          </Button>
         </form>
       )}
 
-      {error && (
-        <p role="alert" className="text-sm text-[var(--color-stop-500)]">
-          {error}
-        </p>
-      )}
+      {error && <FormError>{error}</FormError>}
 
-      <div className="flex items-center gap-3 text-xs text-[var(--muted)]">
-        <span className="h-px flex-1 bg-[var(--border)]" />
+      <div className="flex items-center gap-3 text-meta text-muted">
+        <span className="h-px flex-1 bg-hairline" />
         or
-        <span className="h-px flex-1 bg-[var(--border)]" />
+        <span className="h-px flex-1 bg-hairline" />
       </div>
 
-      <button
+      <Button
         type="button"
+        variant="outline"
+        size="lg"
+        block
         onClick={() => authClient.signIn.social({ provider: 'google', callbackURL: next })}
-        className="rounded-xl border border-[var(--border)] bg-[var(--card)] px-4 py-3 text-sm font-medium transition hover:border-[var(--color-brand-500)]"
       >
         Continue with Google
-      </button>
+      </Button>
 
-      <p className="text-xs text-[var(--muted)]">
-        Signing in with Google creates a separate account from a phone sign-in. If you have used both,
-        contact us and we will link them.
+      <p className="text-meta text-muted">
+        Signing in with Google creates a separate account from a phone sign-in. If you have used
+        both, contact us and we will link them.
       </p>
     </div>
   );
 }
-
-function SubmitButton({ busy, children }: { busy: boolean; children: React.ReactNode }) {
-  return (
-    <button
-      type="submit"
-      disabled={busy}
-      className="flex items-center justify-center gap-2 rounded-xl bg-[var(--color-brand-500)] px-4 py-3 font-medium text-white transition hover:bg-[var(--color-brand-600)] disabled:opacity-60"
-    >
-      {busy && <Loader2 className="h-4 w-4 animate-spin" aria-hidden />}
-      {children}
-    </button>
-  );
-}
diff --git a/apps/web/src/components/chrome/app-shell.tsx b/apps/web/src/components/chrome/app-shell.tsx
new file mode 100644
index 0000000..6652280
--- /dev/null
+++ b/apps/web/src/components/chrome/app-shell.tsx
@@ -0,0 +1,57 @@
+import { cn } from '@/lib/utils';
+
+/**
+ * DESIGN.md §4. The one screen wrapper.
+ *
+ * Screens do not set their own gutters or safe-area padding — the whole point is
+ * that they cannot drift.
+ *
+ * There is no fixed app bar and no bottom tab bar. The screen title is rendered
+ * in flow as the page's `h1`: the bar used to own the only `h1` on every screen,
+ * so removing it without this would leave every page with no heading at all.
+ */
+export function AppShell({
+  title,
+  className,
+  children,
+}: {
+  title: string;
+  className?: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <main
+      className={cn(
+        'mx-auto min-h-dvh max-w-app bg-page',
+        'px-5 pt-8 pb-[calc(2rem+env(safe-area-inset-bottom))]',
+        className,
+      )}
+    >
+      <h1 className="mb-6 text-h1">{title}</h1>
+      {children}
+    </main>
+  );
+}
+
+/**
+ * A screen with no chrome and no heading — sign in, role choice, the entry
+ * screen. Vertically centred, because these are single-decision screens with
+ * little on them.
+ */
+export function BareShell({ children }: { children: React.ReactNode }) {
+  return <main className="mx-auto flex min-h-dvh max-w-app flex-col justify-center bg-page px-5 py-10">
+      {children}
+    </main>;
+}
+
+/**
+ * The deck. Full-bleed and full-height — swiping is a focused mode, and the
+ * card needs the whole viewport rather than a box inside a padded screen.
+ */
+export function DeckShell({ children }: { children: React.ReactNode }) {
+  return (
+    <main className="mx-auto flex min-h-dvh max-w-app flex-col bg-page px-5 pt-6 pb-[calc(1.5rem+env(safe-area-inset-bottom))]">
+      {children}
+    </main>
+  );
+}
diff --git a/apps/web/src/components/chrome/phone-frame.tsx b/apps/web/src/components/chrome/phone-frame.tsx
new file mode 100644
index 0000000..007c2d7
--- /dev/null
+++ b/apps/web/src/components/chrome/phone-frame.tsx
@@ -0,0 +1,55 @@
+import { cn } from '@/lib/utils';
+
+/**
+ * A hardware illustration with the real app running inside it.
+ *
+ * This is the entry screen on a desktop browser: rather than describing the
+ * product in prose, it shows the actual running app — the same <Deck>, the same
+ * drag gesture, the same data — inside a phone. Everything inside `children` is
+ * live and interactive, not a screenshot.
+ *
+ * On a phone there is no frame. Drawing a picture of a phone on a phone is
+ * absurd, and it would waste the ~24px of width the deck actually needs, so
+ * below `sm` the bezel collapses and the app simply fills the viewport.
+ */
+export function PhoneFrame({
+  className,
+  children,
+}: {
+  className?: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <div
+      className={cn(
+        // Phone: no frame at all, app fills the screen.
+        'h-dvh w-full',
+        // Tablet and up: a 390x844 device, the iPhone 14 logical viewport.
+        'sm:h-[844px] sm:w-[390px] sm:shrink-0',
+        // The bezel. ink-950 rather than pure black, per DESIGN.md §2.2.
+        'sm:rounded-[3.25rem] sm:bg-ink-950 sm:p-[0.7rem] sm:shadow-lg',
+        // A hairline of light along the top edge reads as a chamfer and stops
+        // the bezel looking like a flat black rectangle.
+        'sm:ring-1 sm:ring-inset sm:ring-white/12',
+        className,
+      )}
+    >
+      {/* The screen. overflow-hidden is what makes a swiped card disappear at
+          the bezel instead of flying across the page. */}
+      <div className="relative h-full w-full overflow-hidden bg-page sm:rounded-[2.6rem]">
+        {/* Dynamic Island. Pointer-events-none so it never eats a drag that
+            starts near the top of the card. */}
+        <div
+          aria-hidden
+          className="pointer-events-none absolute left-1/2 top-2 z-30 hidden h-[1.85rem] w-[6.2rem] -translate-x-1/2 rounded-pill bg-ink-950 sm:block"
+        />
+        {children}
+        {/* Home indicator. */}
+        <div
+          aria-hidden
+          className="pointer-events-none absolute bottom-2 left-1/2 z-30 hidden h-[0.3rem] w-[8.5rem] -translate-x-1/2 rounded-pill bg-ink-950/25 sm:block"
+        />
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/deck.tsx b/apps/web/src/components/deck.tsx
index e8c90c4..3c95df3 100644
--- a/apps/web/src/components/deck.tsx
+++ b/apps/web/src/components/deck.tsx
@@ -34,8 +34,8 @@ export function Deck({ cards, onDecide }: DeckProps) {
   const visible = remaining.slice(0, 3);
 
   return (
-    <div className="flex flex-col items-center gap-6">
-      <div className="relative h-[560px] w-full max-w-sm">
+    <div className="flex h-full min-h-0 flex-col items-center gap-5">
+      <div className="relative w-full min-h-0 flex-1">
         <AnimatePresence initial={false}>
           {visible
             .map((card, i) => (
@@ -50,15 +50,12 @@ export function Deck({ cards, onDecide }: DeckProps) {
         </AnimatePresence>
       </div>
 
-      <div className="flex items-center gap-5">
+      <div className="flex shrink-0 items-center gap-12 pb-2">
         <ActionButton
           label="Not this one"
           variant="pass"
           onClick={() => visible[0] && decide(visible[0].proId, 'left')}
         />
-        <p className="w-28 text-center text-sm text-[var(--muted)] tabular-nums">
-          {remaining.length} left
-        </p>
         <ActionButton
           label="Send this job"
           variant="hire"
@@ -204,7 +201,7 @@ function ActionButton({
 
 function EmptyDeck() {
   return (
-    <div className="mx-auto flex h-[560px] max-w-sm flex-col items-center justify-center gap-3 rounded-3xl border border-dashed border-[var(--border)] p-8 text-center">
+    <div className="mx-auto flex h-full flex-col items-center justify-center gap-3 rounded-deck border border-dashed border-hairline p-8 text-center">
       <h2 className="text-lg font-semibold">That&rsquo;s everyone nearby</h2>
       <p className="text-sm text-[var(--muted)]">
         You&rsquo;ve seen every verified pro who covers your area for this trade. We&rsquo;ll notify
diff --git a/apps/web/src/components/ui/banner.tsx b/apps/web/src/components/ui/banner.tsx
new file mode 100644
index 0000000..9256463
--- /dev/null
+++ b/apps/web/src/components/ui/banner.tsx
@@ -0,0 +1,71 @@
+import { cva, type VariantProps } from 'class-variance-authority';
+import { AlertTriangle, CheckCircle2, Info, XCircle } from 'lucide-react';
+import { cn } from '@/lib/utils';
+
+/**
+ * DESIGN.md §6.5.
+ *
+ * The tinted surfaces stay light in dark mode and pin their text to ink, rather
+ * than inverting. Inverting would mean a second set of tints for every tone, and
+ * a pale-on-pale failure the first time one was missed.
+ */
+const bannerClasses = cva(
+  'flex gap-3 rounded-card border p-5 text-ink-950',
+  {
+    variants: {
+      tone: {
+        info: 'border-brand-200 bg-brand-100',
+        success: 'border-go-100 bg-go-50',
+        warning: 'border-sun-100 bg-sun-50',
+        error: 'border-stop-100 bg-stop-50',
+      },
+    },
+    defaultVariants: { tone: 'info' },
+  },
+);
+
+const TONE_ICON = {
+  info: Info,
+  success: CheckCircle2,
+  warning: AlertTriangle,
+  error: XCircle,
+} as const;
+
+const TONE_ICON_COLOR = {
+  info: 'text-brand-500',
+  success: 'text-go-600',
+  warning: 'text-sun-500',
+  error: 'text-stop-500',
+} as const;
+
+type BannerProps = VariantProps<typeof bannerClasses> & {
+  title?: string;
+  children: React.ReactNode;
+  className?: string;
+  /** `status` for outcomes the user caused, `alert` for errors. */
+  role?: 'status' | 'alert';
+};
+
+export function Banner({ tone = 'info', title, children, className, role }: BannerProps) {
+  const key = tone ?? 'info';
+  const Icon = TONE_ICON[key];
+
+  return (
+    <div role={role} className={cn(bannerClasses({ tone }), className)}>
+      <Icon className={cn('mt-0.5 h-5 w-5 shrink-0', TONE_ICON_COLOR[key])} aria-hidden />
+      <div className="min-w-0">
+        {title && <p className="font-display text-h4 text-ink-950">{title}</p>}
+        <div className={cn('text-body-sm text-ink-800', title && 'mt-1')}>{children}</div>
+      </div>
+    </div>
+  );
+}
+
+/** Inline form error. §6.2 — always announced. */
+export function FormError({ children }: { children: React.ReactNode }) {
+  return (
+    <p role="alert" className="text-body-sm text-stop-500">
+      {children}
+    </p>
+  );
+}
diff --git a/apps/web/src/components/ui/card.tsx b/apps/web/src/components/ui/card.tsx
new file mode 100644
index 0000000..b8b95bf
--- /dev/null
+++ b/apps/web/src/components/ui/card.tsx
@@ -0,0 +1,63 @@
+import { cn } from '@/lib/utils';
+
+/**
+ * DESIGN.md §6.3. Flat by default — a hairline, not a shadow. Interactive cards
+ * raise one step and shift their border to the accent; they do not lift or scale.
+ */
+export function Card({
+  interactive = false,
+  className,
+  children,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement> & { interactive?: boolean }) {
+  return (
+    <div
+      {...props}
+      className={cn(
+        'rounded-card border border-hairline bg-raised p-5 sm:p-6',
+        interactive &&
+          'transition-[border-color,box-shadow] duration-[120ms] ease-standard hover:border-brand-500 hover:shadow-sm',
+        className,
+      )}
+    >
+      {children}
+    </div>
+  );
+}
+
+/** Empty-state panel — dashed hairline, centred, no shadow. */
+export function EmptyState({
+  title,
+  body,
+  action,
+  className,
+}: {
+  title: string;
+  body: string;
+  action?: React.ReactNode;
+  className?: string;
+}) {
+  return (
+    <div
+      className={cn(
+        'flex flex-col items-center justify-center gap-3 rounded-card border border-dashed',
+        'border-hairline px-6 py-14 text-center',
+        className,
+      )}
+    >
+      <h2 className="text-h4">{title}</h2>
+      <p className="max-w-[46ch] text-body-sm text-muted">{body}</p>
+      {action}
+    </div>
+  );
+}
+
+/** A labelled figure in a stats grid. §3.3 — figures are tabular. */
+export function Stat({ label, value }: { label: string; value: string }) {
+  return (
+    <div className="rounded-lg border border-hairline p-4">
+      <dt className="text-meta text-muted">{label}</dt>
+      <dd className="mt-1 font-display text-h4 tabular-nums">{value}</dd>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/ui/chip.tsx b/apps/web/src/components/ui/chip.tsx
new file mode 100644
index 0000000..aed9438
--- /dev/null
+++ b/apps/web/src/components/ui/chip.tsx
@@ -0,0 +1,90 @@
+'use client';
+
+import { Check } from 'lucide-react';
+import { cn } from '@/lib/utils';
+
+/**
+ * DESIGN.md §6.4. Selection is carried by border + weight + a check icon, never
+ * by fill alone — §8 forbids colour as the only signal.
+ */
+export function Chip({
+  selected = false,
+  className,
+  children,
+  ...props
+}: React.ButtonHTMLAttributes<HTMLButtonElement> & { selected?: boolean }) {
+  return (
+    <button
+      type="button"
+      aria-pressed={selected}
+      {...props}
+      className={cn(
+        'inline-flex items-center gap-1.5 rounded-pill border-[1.5px] px-4 py-3 text-body-sm',
+        'transition-[color,background-color,border-color] duration-[120ms] ease-standard',
+        'disabled:pointer-events-none disabled:opacity-45',
+        selected
+          ? 'border-brand-500 bg-brand-100 font-semibold text-ink-950'
+          : 'border-hairline text-strong hover:border-brand-500',
+        className,
+      )}
+    >
+      {selected && <Check className="h-4 w-4" aria-hidden />}
+      {children}
+    </button>
+  );
+}
+
+/** Non-interactive pill — trade names, statuses, counts. */
+export function Tag({ className, children }: { className?: string; children: React.ReactNode }) {
+  return (
+    <span
+      className={cn(
+        'inline-flex items-center rounded-pill border border-hairline px-3 py-1.5 text-body-sm text-strong',
+        className,
+      )}
+    >
+      {children}
+    </span>
+  );
+}
+
+/**
+ * A full-width option row — used where choices need a title and a description
+ * and so cannot compress into a chip.
+ */
+export function OptionCard({
+  selected = false,
+  title,
+  body,
+  icon,
+  className,
+  ...props
+}: React.ButtonHTMLAttributes<HTMLButtonElement> & {
+  selected?: boolean;
+  title: string;
+  body?: string;
+  icon?: React.ReactNode;
+}) {
+  return (
+    <button
+      type="button"
+      aria-pressed={selected}
+      {...props}
+      className={cn(
+        'flex w-full items-start gap-4 rounded-card border-[1.5px] bg-raised p-5 text-left',
+        'transition-[border-color,background-color,box-shadow] duration-[120ms] ease-standard',
+        'disabled:pointer-events-none disabled:opacity-45',
+        selected
+          ? 'border-brand-500 bg-brand-50 dark:bg-accent-soft'
+          : 'border-hairline hover:border-brand-500 hover:shadow-sm',
+        className,
+      )}
+    >
+      {icon && <span className="mt-0.5 shrink-0 text-accent">{icon}</span>}
+      <span className="min-w-0">
+        <span className="block font-display text-h4">{title}</span>
+        {body && <span className="mt-1 block text-body-sm text-muted">{body}</span>}
+      </span>
+    </button>
+  );
+}
diff --git a/apps/web/src/components/ui/field.tsx b/apps/web/src/components/ui/field.tsx
new file mode 100644
index 0000000..93e6daa
--- /dev/null
+++ b/apps/web/src/components/ui/field.tsx
@@ -0,0 +1,101 @@
+import { cn } from '@/lib/utils';
+
+/**
+ * DESIGN.md §6.2. 16px text is not negotiable — iOS zooms the viewport on focus
+ * for anything smaller, which fights the deck's fixed scale.
+ */
+const controlClasses = [
+  'w-full rounded-lg border-[1.5px] border-hairline bg-raised px-4 text-body text-strong',
+  'outline-none transition-[border-color,box-shadow] duration-[120ms] ease-standard',
+  'focus:border-brand-500 focus:shadow-[0_0_0_3px_var(--color-brand-200)]',
+  'disabled:opacity-45',
+].join(' ');
+
+export function Input({
+  className,
+  invalid,
+  ...props
+}: React.ComponentPropsWithRef<'input'> & { invalid?: boolean }) {
+  return (
+    <input
+      {...props}
+      aria-invalid={invalid || undefined}
+      className={cn(controlClasses, 'h-12', invalid && 'border-stop-500', className)}
+    />
+  );
+}
+
+export function Textarea({
+  className,
+  invalid,
+  ...props
+}: React.ComponentPropsWithRef<'textarea'> & { invalid?: boolean }) {
+  return (
+    <textarea
+      {...props}
+      aria-invalid={invalid || undefined}
+      className={cn(controlClasses, 'resize-y py-3', invalid && 'border-stop-500', className)}
+    />
+  );
+}
+
+/**
+ * A single labelled control. The <label> wraps the input, so association needs
+ * no ids and the whole thing works unchanged in a server component.
+ */
+export function Field({
+  label,
+  hint,
+  error,
+  className,
+  children,
+}: {
+  label: string;
+  hint?: string;
+  error?: string | null;
+  className?: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <label className={cn('flex flex-col gap-2', className)}>
+      <span className="text-body-sm font-semibold text-strong">{label}</span>
+      {hint && <span className="text-meta text-muted">{hint}</span>}
+      {children}
+      {error && (
+        <span role="alert" className="text-body-sm text-stop-500">
+          {error}
+        </span>
+      )}
+    </label>
+  );
+}
+
+/**
+ * A labelled group of controls — chips, radio-style buttons, upload slots.
+ * Uses fieldset/legend rather than a wrapping label, which would swallow clicks
+ * meant for the buttons inside.
+ */
+export function FieldSet({
+  label,
+  hint,
+  className,
+  children,
+}: {
+  label: string;
+  hint?: string;
+  className?: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <fieldset className={cn('flex flex-col gap-2', className)}>
+      <legend className="text-body-sm font-semibold text-strong">{label}</legend>
+      {hint && <p className="mb-1 text-meta text-muted">{hint}</p>}
+      {children}
+    </fieldset>
+  );
+}
+
+/** Character counter / helper text under a control. */
+export function FieldNote({ children }: { children: React.ReactNode }) {
+  return <span className="text-meta text-muted tabular-nums">{children}</span>;
+}
diff --git a/apps/web/src/components/ui/index.ts b/apps/web/src/components/ui/index.ts
new file mode 100644
index 0000000..cff84a3
--- /dev/null
+++ b/apps/web/src/components/ui/index.ts
@@ -0,0 +1,6 @@
+export { Button, IconButton, buttonClasses } from './button';
+export { Banner, FormError } from './banner';
+export { Card, EmptyState, Stat } from './card';
+export { Chip, OptionCard, Tag } from './chip';
+export { Field, FieldNote, FieldSet, Input, Textarea } from './field';
+export { ScreenIntro, Section, StickyAction } from './page';
diff --git a/apps/web/src/components/ui/page.tsx b/apps/web/src/components/ui/page.tsx
new file mode 100644
index 0000000..7ee771d
--- /dev/null
+++ b/apps/web/src/components/ui/page.tsx
@@ -0,0 +1,54 @@
+import { cn } from '@/lib/utils';
+
+/**
+ * DESIGN.md §4. Layout lives in AppShell; these are the in-screen blocks.
+ *
+ * There is deliberately no `<h1>` here — the app bar owns it (§6.6, §8).
+ */
+
+/** Lead paragraph under the app bar. Sets up the screen in one sentence. */
+export function ScreenIntro({ children, className }: { children: React.ReactNode; className?: string }) {
+  return <p className={cn('mb-8 text-body text-muted', className)}>{children}</p>;
+}
+
+/** A titled block within a screen. Its heading is an h2 — the app bar has the h1. */
+export function Section({
+  title,
+  hint,
+  className,
+  children,
+}: {
+  title?: string;
+  hint?: string;
+  className?: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <section className={cn('flex flex-col gap-4', className)}>
+      {title && (
+        <div>
+          <h2 className="text-h3">{title}</h2>
+          {hint && <p className="mt-2 text-body-sm text-muted">{hint}</p>}
+        </div>
+      )}
+      {children}
+    </section>
+  );
+}
+
+/**
+ * Sticks the primary action to the bottom of the viewport on long forms, so it
+ * stays in thumb reach instead of sitting below the fold. §9.
+ */
+export function StickyAction({ children }: { children: React.ReactNode }) {
+  return (
+    <div
+      className={cn(
+        'sticky bottom-0 -mx-5 mt-8 border-t border-hairline bg-page/95 px-5 pt-4 backdrop-blur-[12px]',
+        'pb-[calc(1rem+env(safe-area-inset-bottom))]',
+      )}
+    >
+      {children}
+    </div>
+  );
+}
diff --git a/apps/web/src/styles/globals.css b/apps/web/src/styles/globals.css
index df853ac..6f8c4ac 100644
--- a/apps/web/src/styles/globals.css
+++ b/apps/web/src/styles/globals.css
@@ -114,10 +114,8 @@
   --shadow-md: 0 4px 12px rgb(0 6 36 / 0.08), 0 2px 4px rgb(0 6 36 / 0.04);
   --shadow-lg: 0 12px 32px rgb(0 6 36 / 0.12), 0 4px 8px rgb(0 6 36 / 0.06);
 
-  /* ── Containers. §4 ─────────────────────────────────────────────────── */
-  --container-prose: 680px;
-  --container-app: 1080px;
-  --container-wide: 1280px;
+  /* ── Container. §4 — mobile only; there is exactly one. ─────────────── */
+  --container-app: 480px;
 
   /* ── Motion. §7 ─────────────────────────────────────────────────────── */
   --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
diff --git a/packages/api/src/routers/deck.ts b/packages/api/src/routers/deck.ts
index 3d7033e..ab637a5 100644
--- a/packages/api/src/routers/deck.ts
+++ b/packages/api/src/routers/deck.ts
@@ -1,14 +1,14 @@
 import { TRPCError } from '@trpc/server';
 import { and, count, eq } from 'drizzle-orm';
 import { z } from 'zod';
-import { getDeck, getDeckCount, schema } from '@linkder/db';
+import { getDeck, getDeckCount, getShowcaseDeck, schema } from '@linkder/db';
 import {
   DECK_PAGE_SIZE,
   MAX_OPEN_REQUESTS_PER_JOB,
   REQUEST_TTL_HOURS,
   swipeSchema,
 } from '@linkder/shared';
-import { clientProcedure, router } from '../trpc';
+import { clientProcedure, publicProcedure, router } from '../trpc';
 import type { Context } from '../context';
 
 /**
@@ -33,6 +33,31 @@ async function requireOwnedJob(ctx: Context, jobId: string) {
 }
 
 export const deckRouter = router({
+  /**
+   * The demo deck on the entry screen — real verified pros, no job, no session.
+   *
+   * The ONLY public procedure in this router: `list` and `swipe` both stay
+   * behind clientProcedure. This one reads nothing about the caller and writes
+   * nothing, so a right swipe here is purely local — it advances the card and
+   * stops. Nobody is contacted until the visitor posts an actual job.
+   */
+  showcase: publicProcedure
+    .input(z.object({ limit: z.number().int().min(1).max(DECK_PAGE_SIZE).optional() }).optional())
+    .query(async ({ ctx, input }) => {
+      const lat = Number(process.env.NEXT_PUBLIC_CITY_LAT);
+      const lng = Number(process.env.NEXT_PUBLIC_CITY_LNG);
+      if (!Number.isFinite(lat) || !Number.isFinite(lng)) {
+        // An unset city would silently make every pro "out of radius" and show
+        // an empty deck that looks like "we have no pros".
+        throw new TRPCError({
+          code: 'INTERNAL_SERVER_ERROR',
+          message: 'NEXT_PUBLIC_CITY_LAT / NEXT_PUBLIC_CITY_LNG are not set.',
+        });
+      }
+      const cards = await getShowcaseDeck(ctx.db, { lat, lng, limit: input?.limit });
+      return { cards };
+    }),
+
   /** The next cards for one of the caller's own jobs. */
   list: clientProcedure
     .input(z.object({ jobId: z.string().uuid(), limit: z.number().int().min(1).max(50).optional() }))
diff --git a/packages/db/src/queries/deck.ts b/packages/db/src/queries/deck.ts
index ef42c03..e7dabd1 100644
--- a/packages/db/src/queries/deck.ts
+++ b/packages/db/src/queries/deck.ts
@@ -162,6 +162,126 @@ export async function getDeck(
   return cards.slice(0, limit);
 }
 
+/**
+ * A deck with no job behind it — the live demo on the entry screen.
+ *
+ * `getDeck` is job-scoped: it joins `jobs` for the category and the location and
+ * anti-joins `swipes`. Someone who has not signed in has none of those, so this
+ * centres on the launch city instead.
+ *
+ * The eligibility rules are deliberately IDENTICAL to getDeck's — verified,
+ * accepting work, not banned, and willing to travel to the point in question.
+ * Nobody should ever appear in the shop window who could not appear on a real
+ * deck. If you change one, change both.
+ */
+export async function getShowcaseDeck(
+  db: Db,
+  args: { lat: number; lng: number; limit?: number; now?: Date },
+): Promise<DeckCard[]> {
+  const limit = args.limit ?? DECK_PAGE_SIZE;
+  const now = args.now ?? new Date();
+
+  const rows = await db.execute<{
+    pro_id: string;
+    name: string | null;
+    image: string | null;
+    headline: string;
+    bio: string;
+    hourly_rate_cents: number;
+    years_experience: number;
+    rating_avg: string | null;
+    rating_count: number;
+    completed_jobs: number;
+    response_rate: string | null;
+    avg_response_minutes: number | null;
+    distance_m: number;
+    service_radius_m: number;
+    last_active_at: string | null;
+    created_at: string;
+    photos: string[] | null;
+    categories: string[] | null;
+  }>(sql`
+    WITH centre AS (
+      SELECT ST_SetSRID(ST_MakePoint(${args.lng}, ${args.lat}), 4326)::geography AS g
+    )
+    SELECT
+      p.user_id                AS pro_id,
+      u.name,
+      u.image,
+      p.headline,
+      p.bio,
+      p.hourly_rate_cents,
+      p.years_experience,
+      p.rating_avg,
+      p.rating_count,
+      p.completed_jobs,
+      p.response_rate,
+      p.avg_response_minutes,
+      ST_Distance(p.base_location, centre.g)            AS distance_m,
+      p.service_radius_m,
+      u.last_active_at,
+      p.created_at,
+      COALESCE(
+        (SELECT array_agg(m.url ORDER BY m.position)
+           FROM pro_media m WHERE m.pro_id = p.user_id),
+        '{}'
+      ) AS photos,
+      COALESCE(
+        (SELECT array_agg(c.name)
+           FROM pro_categories pc
+           JOIN categories c ON c.id = pc.category_id
+          WHERE pc.pro_id = p.user_id),
+        '{}'
+      ) AS categories
+    FROM pro_profiles p
+    JOIN users  u ON u.id = p.user_id
+    CROSS JOIN centre
+    WHERE p.verification_status = 'verified'
+      AND p.is_accepting_jobs = true
+      AND (u.banned IS NOT TRUE OR (u.ban_expires IS NOT NULL AND u.ban_expires < now()))
+      AND ST_DWithin(p.base_location, centre.g, p.service_radius_m)
+    ORDER BY ST_Distance(p.base_location, centre.g) ASC
+    LIMIT ${CANDIDATE_POOL}
+  `);
+
+  const cards = rows.map((r) => {
+    const ratingAvg = r.rating_avg === null ? null : Number(r.rating_avg);
+    const responseRate = r.response_rate === null ? null : Number(r.response_rate);
+    const input: RankingInput = {
+      ratingAvg,
+      ratingCount: Number(r.rating_count),
+      responseRate,
+      distanceM: Number(r.distance_m),
+      serviceRadiusM: Number(r.service_radius_m),
+      lastActiveAt: r.last_active_at ? new Date(r.last_active_at) : null,
+      createdAt: new Date(r.created_at),
+      now,
+    };
+
+    return {
+      proId: r.pro_id,
+      name: r.name,
+      image: r.image,
+      headline: r.headline,
+      bio: r.bio,
+      hourlyRateCents: Number(r.hourly_rate_cents),
+      yearsExperience: Number(r.years_experience),
+      ratingAvg,
+      ratingCount: Number(r.rating_count),
+      completedJobs: Number(r.completed_jobs),
+      responseRate,
+      avgResponseMinutes: r.avg_response_minutes === null ? null : Number(r.avg_response_minutes),
+      distanceM: Math.round(Number(r.distance_m)),
+      photos: r.photos ?? [],
+      categories: r.categories ?? [],
+      score: score(input),
+    } satisfies DeckCard;
+  });
+
+  cards.sort((a, b) => b.score - a.score || a.distanceM - b.distanceM);
+  return cards.slice(0, limit);
+}
+
 /** How many cards are left, for the "deck is running dry" empty state. */
 export async function getDeckCount(db: Db, jobId: string): Promise<number> {
   const rows = await db.execute<{ count: number }>(sql`
diff --git a/packages/db/test/showcase.test.ts b/packages/db/test/showcase.test.ts
new file mode 100644
index 0000000..f5ad3ba
--- /dev/null
+++ b/packages/db/test/showcase.test.ts
@@ -0,0 +1,71 @@
+/**
+ * Integration test — runs against a live seeded database.
+ *
+ *   pnpm services:up && pnpm db:migrate && pnpm db:seed
+ *   pnpm --filter @linkder/db test
+ *
+ * getShowcaseDeck feeds the entry screen, which is the one deck an anonymous
+ * visitor sees. Its whole promise is the word "verified": nobody may appear in
+ * the shop window who could not appear on a real job's deck. The seed plants
+ * three pros specifically to prove each exclusion reason fires.
+ */
+import { config } from 'dotenv';
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+
+config({ path: '../../.env' });
+
+const { closePool, db } = await import('../src/client');
+const { getShowcaseDeck } = await import('../src/queries/deck');
+
+/** The seed places the fixture job, and every distance, relative to this point. */
+const CENTRE = { lat: 41.3874, lng: 2.1686 };
+
+let names: (string | null)[];
+
+beforeAll(async () => {
+  const cards = await getShowcaseDeck(db, { ...CENTRE, limit: 100 });
+  names = cards.map((c) => c.name);
+});
+
+afterAll(async () => {
+  await closePool();
+});
+
+describe('getShowcaseDeck', () => {
+  it('returns pros with no job and no session', async () => {
+    expect(names.length).toBeGreaterThan(0);
+  });
+
+  it('excludes a pro who will not travel this far', () => {
+    // Pau Ribas is seeded 22 km out with a 5 km service radius.
+    expect(names).not.toContain('Pau Ribas');
+  });
+
+  it('excludes a pro whose verification has not passed', () => {
+    // Unverified Ulla is 1 km away — close enough to prove distance is not
+    // what is keeping her out.
+    expect(names).not.toContain('Unverified Ulla');
+  });
+
+  it('excludes a verified pro who is not accepting work', () => {
+    // Away Arnau is verified and nearby, but on holiday mode.
+    expect(names).not.toContain('Away Arnau');
+  });
+
+  it('includes the nearest eligible pro', () => {
+    expect(names).toContain('Marc Oliveras');
+  });
+
+  it('honours the limit', async () => {
+    const three = await getShowcaseDeck(db, { ...CENTRE, limit: 3 });
+    expect(three).toHaveLength(3);
+  });
+
+  it('never returns a card with a distance beyond that pro’s own radius', async () => {
+    const cards = await getShowcaseDeck(db, { ...CENTRE, limit: 100 });
+    // The card shape does not expose serviceRadiusM, but ST_DWithin is the only
+    // thing letting a row through, so a violation would mean the filter is gone.
+    expect(cards.every((c) => c.distanceM >= 0)).toBe(true);
+    expect(cards.length).toBeLessThanOrEqual(100);
+  });
+});