Add IntroStep page (wizard step 1) + audit fixes

IntroStep: urgency-sensitive segmentation entry point. ToggleButtonGroup
for forWhom (Myself/Someone else) with progressive disclosure revealing
hasPassedAway (Yes/No) via Collapse. Auto-sets hasPassedAway="no" when
forWhom="myself". Grief-sensitive copy adapts subheading per selection.
Pure presentation — props in, callbacks out.

Audit fixes (18/20 → 20/20):
- P1: Add <main> landmark wrapper in WizardLayout (all variants)
- P2: Wrap IntroStep fields in <form> for landmark + Enter-to-submit

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/pages/IntroStep/IntroStep.stories.tsx

@@ -0,0 +1,214 @@
+import { useState } from 'react';
+import type { Meta, StoryObj } from '@storybook/react';
+import { IntroStep } from './IntroStep';
+import type { IntroStepValues, IntroStepErrors } from './IntroStep';
+import { Navigation } from '../../organisms/Navigation';
+import Box from '@mui/material/Box';
+
+// ─── Helpers ─────────────────────────────────────────────────────────────────
+
+const FALogo = () => (
+  <Box sx={{ display: 'flex', alignItems: 'center' }}>
+    <Box
+      component="img"
+      src="/brandlogo/logo-full.svg"
+      alt="Funeral Arranger"
+      sx={{ height: 28, display: { xs: 'none', md: 'block' } }}
+    />
+    <Box
+      component="img"
+      src="/brandlogo/logo-short.svg"
+      alt="Funeral Arranger"
+      sx={{ height: 28, display: { xs: 'block', md: 'none' } }}
+    />
+  </Box>
+);
+
+const nav = (
+  <Navigation
+    logo={<FALogo />}
+    items={[
+      { label: 'FAQ', href: '/faq' },
+      { label: 'Contact Us', href: '/contact' },
+      { label: 'Log in', href: '/login' },
+    ]}
+  />
+);
+
+// ─── Meta ────────────────────────────────────────────────────────────────────
+
+const meta: Meta<typeof IntroStep> = {
+  title: 'Pages/IntroStep',
+  component: IntroStep,
+  tags: ['autodocs'],
+  parameters: {
+    layout: 'fullscreen',
+  },
+};
+
+export default meta;
+type Story = StoryObj<typeof IntroStep>;
+
+// ─── Interactive (default) ──────────────────────────────────────────────────
+
+/** Fully interactive — click through the progressive disclosure flow */
+export const Default: Story = {
+  render: () => {
+    const [values, setValues] = useState<IntroStepValues>({
+      forWhom: null,
+      hasPassedAway: null,
+    });
+    const [errors, setErrors] = useState<IntroStepErrors>({});
+
+    const handleContinue = () => {
+      const newErrors: IntroStepErrors = {};
+      if (!values.forWhom) {
+        newErrors.forWhom = 'We need to know who the funeral is for to show you the right options.';
+      }
+      if (values.forWhom === 'someone' && !values.hasPassedAway) {
+        newErrors.hasPassedAway = 'This helps us tailor the process to your situation.';
+      }
+      setErrors(newErrors);
+      if (Object.keys(newErrors).length === 0) {
+        alert(`Continue with: ${JSON.stringify(values)}`);
+      }
+    };
+
+    return (
+      <IntroStep
+        values={values}
+        onChange={(v) => {
+          setValues(v);
+          setErrors({});
+        }}
+        onContinue={handleContinue}
+        errors={errors}
+        navigation={nav}
+      />
+    );
+  },
+};
+
+// ─── Pre-planning (myself) ──────────────────────────────────────────────────
+
+/** User has selected "Myself" — hasPassedAway auto-set to "no", no second question */
+export const PrePlanningMyself: Story = {
+  render: () => {
+    const [values, setValues] = useState<IntroStepValues>({
+      forWhom: 'myself',
+      hasPassedAway: 'no',
+    });
+    return (
+      <IntroStep
+        values={values}
+        onChange={setValues}
+        onContinue={() => alert('Continue')}
+        navigation={nav}
+      />
+    );
+  },
+};
+
+// ─── At-need (someone, yes) ─────────────────────────────────────────────────
+
+/** User arranging for someone who has passed — at-need flow */
+export const AtNeedSomeone: Story = {
+  render: () => {
+    const [values, setValues] = useState<IntroStepValues>({
+      forWhom: 'someone',
+      hasPassedAway: 'yes',
+    });
+    return (
+      <IntroStep
+        values={values}
+        onChange={setValues}
+        onContinue={() => alert('Continue')}
+        navigation={nav}
+      />
+    );
+  },
+};
+
+// ─── Pre-planning (someone, no) ─────────────────────────────────────────────
+
+/** User arranging for someone who is alive — pre-planning flow */
+export const PrePlanningSomeone: Story = {
+  render: () => {
+    const [values, setValues] = useState<IntroStepValues>({
+      forWhom: 'someone',
+      hasPassedAway: 'no',
+    });
+    return (
+      <IntroStep
+        values={values}
+        onChange={setValues}
+        onContinue={() => alert('Continue')}
+        navigation={nav}
+      />
+    );
+  },
+};
+
+// ─── Validation errors ──────────────────────────────────────────────────────
+
+/** Both fields showing validation errors */
+export const WithErrors: Story = {
+  render: () => {
+    const [values, setValues] = useState<IntroStepValues>({
+      forWhom: null,
+      hasPassedAway: null,
+    });
+    return (
+      <IntroStep
+        values={values}
+        onChange={setValues}
+        onContinue={() => {}}
+        errors={{
+          forWhom: 'We need to know who the funeral is for to show you the right options.',
+        }}
+        navigation={nav}
+      />
+    );
+  },
+};
+
+// ─── Loading state ──────────────────────────────────────────────────────────
+
+/** Continue button in loading state */
+export const Loading: Story = {
+  render: () => {
+    const [values, setValues] = useState<IntroStepValues>({
+      forWhom: 'myself',
+      hasPassedAway: 'no',
+    });
+    return (
+      <IntroStep
+        values={values}
+        onChange={setValues}
+        onContinue={() => {}}
+        loading
+        navigation={nav}
+      />
+    );
+  },
+};
+
+// ─── No navigation (embedded) ───────────────────────────────────────────────
+
+/** Without navigation — for embedded/iframe use */
+export const Embedded: Story = {
+  render: () => {
+    const [values, setValues] = useState<IntroStepValues>({
+      forWhom: null,
+      hasPassedAway: null,
+    });
+    return (
+      <IntroStep
+        values={values}
+        onChange={setValues}
+        onContinue={() => alert('Continue')}
+        hideHelpBar
+      />
+    );
+  },
+};

src/components/pages/IntroStep/IntroStep.tsx

@@ -0,0 +1,191 @@
+import React from 'react';
+import Box from '@mui/material/Box';
+import type { SxProps, Theme } from '@mui/material/styles';
+import { WizardLayout } from '../../templates/WizardLayout';
+import { ToggleButtonGroup } from '../../atoms/ToggleButtonGroup';
+import { Collapse } from '../../atoms/Collapse';
+import { Typography } from '../../atoms/Typography';
+import { Button } from '../../atoms/Button';
+import { Divider } from '../../atoms/Divider';
+
+// ─── Types ───────────────────────────────────────────────────────────────────
+
+/** Form values for the intro step */
+export interface IntroStepValues {
+  /** Who the funeral is being arranged for */
+  forWhom: 'myself' | 'someone' | null;
+  /** Whether the person has passed away (only relevant when forWhom="someone") */
+  hasPassedAway: 'yes' | 'no' | null;
+}
+
+/** Field-level error messages */
+export interface IntroStepErrors {
+  /** Error for the forWhom field */
+  forWhom?: string;
+  /** Error for the hasPassedAway field */
+  hasPassedAway?: string;
+}
+
+/** Props for the IntroStep page component */
+export interface IntroStepProps {
+  /** Current form values */
+  values: IntroStepValues;
+  /** Callback when any field value changes */
+  onChange: (values: IntroStepValues) => void;
+  /** Callback when the Continue button is clicked */
+  onContinue: () => void;
+  /** Field-level validation errors */
+  errors?: IntroStepErrors;
+  /** Whether the Continue button is in a loading state */
+  loading?: boolean;
+  /** Navigation bar — passed through to WizardLayout */
+  navigation?: React.ReactNode;
+  /** Hide the help bar */
+  hideHelpBar?: boolean;
+  /** MUI sx prop for the root */
+  sx?: SxProps<Theme>;
+}
+
+// ─── Copy helpers ────────────────────────────────────────────────────────────
+
+function getSubheading(values: IntroStepValues): string {
+  if (values.forWhom === 'someone' && values.hasPassedAway === 'yes') {
+    return "We'll guide you through each step. You can save your progress and come back anytime.";
+  }
+  if (values.forWhom === 'myself' || values.hasPassedAway === 'no') {
+    return "Explore your options and plan at your own pace. Nothing is locked in until you're ready.";
+  }
+  return "We'll guide you through arranging a funeral, step by step. You can save your progress and come back anytime.";
+}
+
+// ─── Component ───────────────────────────────────────────────────────────────
+
+/**
+ * Step 1 — Intro page for the FA arrangement wizard.
+ *
+ * Entry point with urgency-sensitive segmentation. User selects who
+ * the funeral is for, and (if arranging for someone else) whether
+ * that person has died.
+ *
+ * Uses the Centered Form layout variant. Progressive disclosure:
+ * selecting "Someone else" reveals the hasPassedAway question.
+ * Selecting "Myself" auto-sets hasPassedAway to "no" (pre-planning).
+ *
+ * Pure presentation component — props in, callbacks out.
+ * No routing, state management, or API calls.
+ *
+ * Spec: documentation/steps/steps/01_intro.yaml
+ */
+export const IntroStep: React.FC<IntroStepProps> = ({
+  values,
+  onChange,
+  onContinue,
+  errors,
+  loading = false,
+  navigation,
+  hideHelpBar,
+  sx,
+}) => {
+  const handleForWhomChange = (newValue: string | null) => {
+    const forWhom = newValue as IntroStepValues['forWhom'];
+    if (forWhom === 'myself') {
+      // Auto-set hasPassedAway to 'no' — user is alive, pre-planning
+      onChange({ forWhom, hasPassedAway: 'no' });
+    } else {
+      // Reset hasPassedAway when switching to "someone"
+      onChange({ forWhom, hasPassedAway: null });
+    }
+  };
+
+  const handleHasPassedAwayChange = (newValue: string | null) => {
+    onChange({ ...values, hasPassedAway: newValue as IntroStepValues['hasPassedAway'] });
+  };
+
+  const showHasPassedAway = values.forWhom === 'someone';
+
+  return (
+    <WizardLayout variant="centered-form" navigation={navigation} hideHelpBar={hideHelpBar} sx={sx}>
+      {/* Page heading — receives focus on entry for screen readers */}
+      <Typography variant="display3" component="h1" sx={{ mb: 1 }} tabIndex={-1}>
+        Let&apos;s get started
+      </Typography>
+
+      <Typography variant="body1" color="text.secondary" sx={{ mb: 5 }} aria-live="polite">
+        {getSubheading(values)}
+      </Typography>
+
+      <Box
+        component="form"
+        noValidate
+        onSubmit={(e: React.FormEvent) => {
+          e.preventDefault();
+          onContinue();
+        }}
+      >
+        {/* forWhom field */}
+        <Box sx={{ mb: 3 }}>
+          <ToggleButtonGroup
+            label="Who is this funeral being arranged for?"
+            options={[
+              {
+                value: 'myself',
+                label: 'Myself',
+                description: 'I want to plan my own funeral',
+              },
+              {
+                value: 'someone',
+                label: 'Someone else',
+                description: 'I am arranging for a family member or friend',
+              },
+            ]}
+            value={values.forWhom}
+            onChange={handleForWhomChange}
+            error={!!errors?.forWhom}
+            helperText={errors?.forWhom}
+            required
+            fullWidth
+          />
+        </Box>
+
+        {/* hasPassedAway field — revealed when forWhom="someone" */}
+        <Collapse in={showHasPassedAway}>
+          <Box sx={{ mb: 3 }}>
+            <ToggleButtonGroup
+              label="Has the person died?"
+              options={[
+                {
+                  value: 'yes',
+                  label: 'Yes',
+                  description: 'I need to arrange a funeral now',
+                },
+                {
+                  value: 'no',
+                  label: 'No',
+                  description: 'I am planning ahead',
+                },
+              ]}
+              value={values.hasPassedAway}
+              onChange={handleHasPassedAwayChange}
+              error={!!errors?.hasPassedAway}
+              helperText={errors?.hasPassedAway}
+              required
+              fullWidth
+            />
+          </Box>
+        </Collapse>
+
+        <Divider sx={{ my: 4 }} />
+
+        {/* CTA */}
+        <Box sx={{ display: 'flex', justifyContent: 'flex-end' }}>
+          <Button type="submit" variant="contained" size="large" loading={loading}>
+            Continue
+          </Button>
+        </Box>
+      </Box>
+    </WizardLayout>
+  );
+};
+
+IntroStep.displayName = 'IntroStep';
+export default IntroStep;

src/components/pages/IntroStep/index.ts

@@ -0,0 +1,2 @@
+export { default } from './IntroStep';
+export * from './IntroStep';

src/components/templates/WizardLayout/WizardLayout.tsx

@@ -324,7 +324,9 @@ export const WizardLayout = React.forwardRef<HTMLDivElement, WizardLayoutProps>(
         )}
 
         {/* Main content area */}
+        <Box component="main" sx={{ display: 'flex', flexDirection: 'column', flex: 1 }}>
           <LayoutComponent secondaryPanel={secondaryPanel}>{children}</LayoutComponent>
+        </Box>
 
         {/* Sticky help bar */}
         {!hideHelpBar && <HelpBar phone={helpPhone} />}