diff --git a/e2e/board.smoke.spec.ts b/e2e/board.smoke.spec.ts
index c12b19c..fea4897 100644
--- a/e2e/board.smoke.spec.ts
+++ b/e2e/board.smoke.spec.ts
@@ -30,6 +30,12 @@ test('move, folder expansion, empty-board pan, desktop wheel zoom, mobile pinch,
   await expect(page.locator('.documents-panel')).toHaveClass(/\bclosed\b/)
   await expect(page.locator('.brief-panel')).toBeVisible()
   await expect(page.getByRole('button', { name: 'Case brief', exact: true })).toContainText('2')
+  await page.getByRole('button', { name: 'Minimize brief', exact: true }).click()
+  await expect(page.locator('.brief-panel')).toHaveClass(/\bminimized\b/)
+  await expect(page.locator('.brief-panel > p')).toBeHidden()
+  await expect(page.getByRole('button', { name: 'Close brief', exact: true })).toBeVisible()
+  await page.getByRole('button', { name: 'Restore brief', exact: true }).click()
+  await expect(page.locator('.brief-panel')).not.toHaveClass(/\bminimized\b/)
   await page.getByRole('button', { name: 'BEGIN INVESTIGATION', exact: true }).click()
 
   const folder = page.locator('[data-temporal-id="widget:11111111-1111-4111-8111-111111111111"]')
diff --git a/src/App.tsx b/src/App.tsx
index d0b6aa6..f8f7c19 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -720,9 +720,10 @@ function ThreadEditor({ connection, sourceName, targetName, isNew, onClose, onSa
 }
 
 function BriefPanel({ brief, parties, recentlyCreatedExhibitId, canEdit, onClose, onEdit, onClassify, onNewParty, onLocate, onEditParty }: { brief: LevelBrief; parties: Evidence[]; recentlyCreatedExhibitId: string | null; canEdit: boolean; onClose: () => void; onEdit: () => void; onClassify: (id: string, kind: PartyKind) => void; onNewParty: () => void; onLocate: (id: string) => void; onEditParty: (id: string) => void }) {
+  const [minimized, setMinimized] = useState(false)
   const partyById = new Map(parties.map(party => [party.id, party]))
   const unresolved = brief.concepts.filter(concept => !concept.resolvedPartyExhibitId).length
-  return <aside className="brief-panel"><header><div><small>LEVEL BRIEF · {unresolved} UNRESOLVED</small><b>CONCEPT CLASSIFICATION</b></div><button aria-label="Close brief" onClick={onClose}><X size={14}/></button></header>
+  return <aside className={`brief-panel ${minimized ? 'minimized' : ''}`}><header onDoubleClick={() => setMinimized(value => !value)}><div><small>LEVEL BRIEF · {unresolved} UNRESOLVED</small><b>CONCEPT CLASSIFICATION</b></div><span/><button type="button" aria-label={minimized ? 'Restore brief' : 'Minimize brief'} title={minimized ? 'Restore' : 'Minimize'} onDoubleClick={event => event.stopPropagation()} onClick={() => setMinimized(value => !value)}>{minimized ? <Plus size={14}/> : <Minus size={14}/>}</button><button type="button" aria-label="Close brief" title="Close" onDoubleClick={event => event.stopPropagation()} onClick={onClose}><X size={14}/></button></header>
     <p>{brief.body || 'No brief has been authored yet.'}</p>
     <div className="brief-concepts">{brief.concepts.map(concept => { const resolved = concept.resolvedPartyExhibitId ? partyById.get(concept.resolvedPartyExhibitId) : undefined; return <section className={`${resolved ? 'resolved' : ''} ${resolved?.id === recentlyCreatedExhibitId ? 'just-resolved' : ''}`} key={concept.id}><div><b>{concept.label}</b><span>{concept.context}</span></div>{resolved ? <div className="resolved-actions"><span>{resolved.partyKind === 'person' ? <UserRound size={14}/> : <Building2 size={14}/>} {resolved.partyKind?.toUpperCase()}</span><button onClick={() => onLocate(resolved.id)}>LOCATE</button><button onClick={() => onEditParty(resolved.id)}>EDIT DOSSIER</button></div> : <div className="classify-actions"><button onClick={() => onClassify(concept.id, 'person')}><UserRound size={14}/> PERSON</button><button onClick={() => onClassify(concept.id, 'organization')}><Building2 size={14}/> ORGANIZATION</button></div>}</section> })}</div>
     <button className="new-party-from-brief" onClick={onNewParty}><Plus size={13}/> CREATE PARTY NOT LISTED ABOVE</button>
diff --git a/src/styles.css b/src/styles.css
index e3b8585..dc01bb8 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -180,8 +180,9 @@ button:focus-visible { outline: 2px solid #e99a44; outline-offset: 2px; }
 .story-strip b { color: #d9ddd8; font: 9px IBM Plex Mono; }
 .story-strip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #849b93; font: 8px Special Elite; }
 .brief-panel { position: absolute; z-index: 12; right: 18px; top: 18px; width: min(410px, 42vw); max-height: calc(100% - 36px); overflow: auto; background: #c6c9c1; color: #17231f; border: 2px solid #d8dbd4; box-shadow: 7px 9px 0 #020a08, 0 0 0 1px #46554f; }
-.brief-panel > header { height: 44px; padding: 0 8px 0 13px; display: flex; align-items: center; background: #173d34; color: #e0e8e4; }
-.brief-panel > header div { display: grid; gap: 2px; }.brief-panel > header small { color: #9bb0a9; font: 7px IBM Plex Mono; letter-spacing: .14em; }.brief-panel > header b { font: 10px IBM Plex Mono; }.brief-panel > header button { margin-left: auto; width: 25px; height: 24px; display: grid; place-items: center; }
+.brief-panel > header { height: 44px; padding: 0 7px 0 13px; display: flex; align-items: center; background: #173d34; color: #e0e8e4; cursor: default; }
+.brief-panel > header div { display: grid; gap: 2px; }.brief-panel > header > span { flex: 1; }.brief-panel > header small { color: #9bb0a9; font: 7px IBM Plex Mono; letter-spacing: .14em; }.brief-panel > header b { font: 10px IBM Plex Mono; }.brief-panel > header button { flex: 0 0 auto; width: 25px; height: 24px; margin-left: 4px; display: grid; place-items: center; padding: 0; border: 1px outset #e8ece8; background: #c9cec8; color: #17312b; cursor: pointer; }.brief-panel > header button:hover { background: #eef0eb; color: #070d0b; }
+.brief-panel.minimized { width: min(330px, 42vw); overflow: hidden; }.brief-panel.minimized > :not(header) { display: none; }
 .brief-panel > p { margin: 16px; padding: 13px; background: #e2dfd2; border-left: 3px solid #a66d37; font: 13px/1.55 Special Elite; }
 .brief-concepts { border-top: 1px solid #8c958e; }.brief-concepts section { padding: 12px 15px; border-bottom: 1px solid #959c95; }.brief-concepts section.resolved { background: #d5ddcf; }.brief-concepts section.just-resolved { animation: concept-resolved 1.15s ease-out; }.brief-concepts section > div:first-child { display: grid; gap: 4px; }.brief-concepts b { font: 600 10px IBM Plex Mono; }.brief-concepts span { color: #616d67; font: 9px Special Elite; }
 .classify-actions, .resolved-actions { display: flex; align-items: center; gap: 7px; margin-top: 9px; }.classify-actions button, .resolved-actions button, .edit-brief, .new-party-from-brief { display: inline-flex; align-items: center; gap: 5px; border: 1px outset #89948e; background: #e3e1d6; color: #29463e; padding: 7px 8px; cursor: pointer; font: 8px IBM Plex Mono; }.resolved-actions > span { margin-right: auto; display: inline-flex; align-items: center; gap: 5px; color: #31584d; font: 600 8px IBM Plex Mono; }.edit-brief, .new-party-from-brief { margin: 12px 15px 0; }.edit-brief { background: #234c41; color: white; }.new-party-from-brief { width: calc(100% - 30px); justify-content: center; border-style: dashed; background: #d8d8cf; }.dismiss-brief { width: calc(100% - 30px); margin: 12px 15px 14px; padding: 9px; border: 1px outset #73877f; background: #1e473d; color: white; cursor: pointer; font: 600 9px IBM Plex Mono; letter-spacing: .08em; }