fix(home): correct remaining KS2/Ofsted terminology on the landing page

Follow-up to the accuracy pass — the medium-severity wording issues
from the same expert review:

- KS2 "Exceeding" isn't a DfE term. The above-expected level is the
  "higher standard" for the reading and maths tests and "greater depth"
  for teacher-assessed writing. Labelled per subject, and brought the
  illustrative reading value down from an implausible 73% (national
  higher standard is ~29%) to a realistic strong-school figure.
- Attributed inspection outcomes to Ofsted, not only the DfE (Ofsted is
  a separate non-ministerial department).
- Hero: "2026/2027 admissions results" -> "the 2026/27 admissions
  round" (admissions produce offers, not results, and we don't hold
  per-school offer outcomes).

Tightened .miniRowHead so the longer "Greater depth" label stays on one
line and the three subject columns keep their bars aligned (the visual
is desktop-only; hidden on mobile).

Verified with tsc --noEmit and next build.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0146VHeLAWjDVE2B5uU67jCB

nextjs-app/components/HowItWorksSection.tsx

@@ -5,10 +5,13 @@
 import styles from './HomeView.module.css';
 
 export function HowItWorksSection() {
+  // "exc" is the school's above-expected result. DfE names this differently
+  // by subject: "higher standard" for the reading and maths tests, "greater
+  // depth" for teacher-assessed writing. "nat" is the national expected %.
   const miniCascade = [
-    { subj: 'Reading', exp: 96, exc: 73, nat: 75 },
-    { subj: 'Writing', exp: 81, exc: 15, nat: 72 },
-    { subj: 'Maths', exp: 85, exc: 47, nat: 74 },
+    { subj: 'Reading', exp: 96, exc: 44, nat: 75, excLabel: 'Higher std' },
+    { subj: 'Writing', exp: 81, exc: 26, nat: 72, excLabel: 'Greater depth' },
+    { subj: 'Maths', exp: 85, exc: 41, nat: 74, excLabel: 'Higher std' },
   ];
   const compareRows = [
     { label: 'Reading, Writing & Maths', a: '70%', b: '64%', aHi: true },
@@ -37,7 +40,7 @@ export function HowItWorksSection() {
             <div className={styles.hiwPhaseBlock}>
               <div className={styles.hiwPhaseLabel}>Primary · Year 6 · <strong>Key Stage 2 SATs</strong></div>
               <div className={styles.miniCascade}>
-                {miniCascade.map(({ subj, exp, exc, nat }) => (
+                {miniCascade.map(({ subj, exp, exc, nat, excLabel }) => (
                   <div key={subj} className={styles.miniCascadeCol}>
                     <div className={styles.miniSubj}>{subj}</div>
                     <div className={styles.miniRowHead}><span>Expected</span><strong>{exp}%</strong></div>
@@ -45,7 +48,7 @@ export function HowItWorksSection() {
                       <div className={styles.miniNatPill} style={{ left: `${nat}%` }}>{nat}%</div>
                       <div className={styles.miniBarExp} style={{ width: `${exp}%` }} />
                     </div>
-                    <div className={styles.miniRowHead}><span>Exceeding</span><strong>{exc}%</strong></div>
+                    <div className={styles.miniRowHead}><span>{excLabel}</span><strong>{exc}%</strong></div>
                     <div className={styles.miniTrack}>
                       <div className={styles.miniBarExc} style={{ width: `${exc}%` }} />
                     </div>