diff --git a/components/reasoning-workspace.jsx b/components/reasoning-workspace.jsx
index e65ccbf..c8aae00 100644
--- a/components/reasoning-workspace.jsx
+++ b/components/reasoning-workspace.jsx
@@ -86,45 +86,21 @@ function ActivitySpinner() {
   );
 }
 
-// ── Situation card ────────────────────────────────────────────
-function SituationCard({ centralStatement }) {
-  if (!centralStatement) return null;
-  return (
-    <div className="investigation-card rounded-lg border border-gray-200 bg-white p-5">
-      <h2 className="mb-2 text-sm font-semibold uppercase tracking-wide text-gray-500">
-        Your situation
-      </h2>
-      <p className="text-base leading-relaxed text-gray-900">{centralStatement}</p>
-    </div>
-  );
-}
-
-// ── Current understanding card ────────────────────────────────
-function CurrentUnderstanding({ currentSummary }) {
-  const summary = resolveCurrentSummary(currentSummary);
-
-  if (!summary) return null;
-
-  return (
-    <div className="investigation-card rounded-lg border border-gray-200 bg-white p-5">
-      <h2 className="mb-3 text-sm font-semibold uppercase tracking-wide text-gray-500">
-        What we&#x27;ve established
-      </h2>
-      <p className="text-sm leading-relaxed text-gray-700">{summary}</p>
-    </div>
-  );
-}
-
-// ── Current investigation card (prominent) ─────────────────────
+// ── Current investigation card (prominent hero section) ──────
 function CurrentInvestigationCard({ selectedQuestion, graph }) {
   if (!selectedQuestion) return null;
 
   const q = typeof selectedQuestion === "string" ? selectedQuestion : selectedQuestion.question;
   if (!q) return null;
 
-  const activeNode = graph?.activeUnknownNodeId
-    ? graph.nodes.find((n) => n.id === graph.activeUnknownNodeId)
-    : null;
+  // Derive meaningful context from the active node only when it adds value
+  let whyMattersText = null;
+  if (graph?.activeUnknownNodeId && graph.nodes) {
+    const activeNode = graph.nodes.find((n) => n.id === graph.activeUnknownNodeId);
+    if (activeNode?.description && activeNode.description !== activeNode.label) {
+      whyMattersText = activeNode.description;
+    }
+  }
 
   return (
     <div className="investigation-card rounded-lg border-2 border-green-300 bg-green-50 p-6">
@@ -132,18 +108,10 @@ function CurrentInvestigationCard({ selectedQuestion, graph }) {
         Current investigation
       </h2>
       <p className="text-xl font-semibold leading-snug text-gray-900">{q}</p>
-      {activeNode?.description && activeNode.description !== activeNode.label && (
+      {whyMattersText && (
         <div className="mt-4 space-y-1">
-          <h3 className="text-xs font-bold uppercase tracking-wide text-green-800">Why we are asking this</h3>
-          <p className="text-sm text-gray-700">{activeNode.description}</p>
-        </div>
-      )}
-      {graph?.activeUnknownNodeId && activeNode && (
-        <div className="mt-2 space-y-1">
-          <h3 className="text-xs font-bold uppercase tracking-wide text-green-800">What we are investigating</h3>
-          <p className="text-sm text-gray-700">
-            Understanding whether "{activeNode.label}" affects the confidence in this situation.
-          </p>
+          <h3 className="text-xs font-bold uppercase tracking-wide text-green-800">Why this matters</h3>
+          <p className="text-sm text-gray-700">{whyMattersText}</p>
         </div>
       )}
     </div>
@@ -166,34 +134,50 @@ function hasGenuineCompletion(graph) {
   return true;
 }
 
-// ── Current focus card ───────────────────────────────────────
-function CurrentFocusCard({ graph }) {
-  const activeNode = graph?.activeUnknownNodeId
-    ? graph.nodes.find((n) => n.id === graph.activeUnknownNodeId)
-    : null;
-
-  if (!graph || !activeNode) return null;
-
+// ── Completion card (terminal state when all unknowns resolved) ─
+function CompletionCard() {
   return (
-    <div className="rounded-lg border border-gray-200 bg-gray-50 px-5 py-4">
-      <h3 className="mb-1 text-xs font-bold uppercase tracking-wide text-gray-500">
-        Current focus
-      </h3>
-      <p className="text-sm leading-relaxed text-gray-700">
-        We are investigating one part of your situation at a time.
-        {activeNode && (
-          <>
-            <br />
-            Right now we are trying to understand{" "}
-            <strong>{activeNode.label}</strong>.
-          </>
-        )}
-      </p>
+    <div className="rounded-lg border border-green-300 bg-green-50 px-5 py-6 text-center">
+      <h2 className="mb-1 text-sm font-bold uppercase tracking-wide text-green-700">Investigation complete</h2>
+      <p className="text-base text-gray-800">You have provided enough information. The situation has been fully investigated.</p>
     </div>
   );
 }
 
-// ── Investigation history card (readable notebook style) ───────
+// ── Evidence exhaustion card (terminal state) ─────────────────
+function EvidenceExhaustedCard({ noQuestionReason }) {
+  let message = "There is not yet enough evidence to guide the next step.";
+  if (noQuestionReason) {
+    const reason = String(noQuestionReason);
+    if (reason.toLowerCase().includes("insufficient")) {
+      message = reason;
+    }
+  }
+  return (
+    <div className="rounded-lg border border-gray-200 bg-gray-50 px-5 py-6 text-center">
+      <h2 className="mb-1 text-sm font-bold uppercase tracking-wide text-gray-500">Further investigation needed</h2>
+      <p className="text-base text-gray-700">{message}</p>
+    </div>
+  );
+}
+
+// ── Current understanding card ────────────────────────────────
+function CurrentUnderstandingCard({ currentSummary }) {
+  const summary = resolveCurrentSummary(currentSummary);
+
+  if (!summary) return null;
+
+  return (
+    <div className="rounded-lg border border-gray-200 bg-white p-5">
+      <h2 className="mb-3 text-sm font-semibold uppercase tracking-wide text-gray-500">
+        Current understanding
+      </h2>
+      <p className="text-sm leading-relaxed text-gray-700">{summary}</p>
+    </div>
+  );
+}
+
+// ── Investigation history card (readable notebook style) ──────
 function InvestigationHistoryCard({ turn }) {
   const isCollapsed = turn._collapsed;
 
@@ -249,54 +233,22 @@ function InvestigationHistory({ turns }) {
   );
 }
 
-// ── Investigation complete state ───────────────────────────────
-function InvestigationCompleteMessage({ noQuestionReason }) {
-  let message = "We have established enough for now.";
-  if (noQuestionReason) {
-    const reason = String(noQuestionReason);
-    if (
-      reason.toLowerCase().includes("resolved") ||
-      reason.toLowerCase().includes("satisfied") ||
-      reason.toLowerCase().includes("complete")
-    ) {
-      message = "You have provided enough information. The situation has been fully investigated.";
-    } else if (reason.toLowerCase().includes("insufficient")) {
-      message = "There is not yet enough evidence to guide the next step. Your original situation will remain our focus when new information becomes available.";
-    } else {
-      message = reason;
-    }
-  }
-  return (
-    <div className="rounded-lg border border-gray-200 bg-gray-50 px-5 py-4 text-center transition-opacity duration-300">
-      <p className="text-sm text-gray-600">{message}</p>
-    </div>
-  );
-}
-
-// ── Loading overlay (for both start and update) ───────────────
-function LoadingOverlay({ isLoading, elapsed, currentMessage, variant }) {
-  if (!isLoading) return null;
-
-  const messages = variant === "update" ? UPDATE_MESSAGES : INITIAL_MESSAGES;
-  let statusText = messages[0].text;
-  for (const m of messages) {
-    if (elapsed >= m.min) statusText = m.text;
-  }
+// ── Original situation (collapsed by default) ─────────────────
+function OriginalSituation({ scenario, centralStatement }) {
+  if (!scenario) return null;
 
   return (
-    <div className="rounded-lg border border-gray-200 bg-blue-50 px-5 py-6" role="status" aria-busy="true">
-      <div className="flex items-center gap-3">
-        <ActivitySpinner />
-        <span className="text-base font-medium text-blue-900">Working through your situation</span>
-      </div>
-      <p className="mt-2 text-sm text-blue-700">{statusText}</p>
-      <p className="mt-1 text-xs text-blue-500" aria-live="polite">
-        This has been running for {elapsed}s.
-        {variant === "initial" && elapsed >= 45 && (
-          <span className="block mt-1">This can take around a minute with the current local model.</span>
+    <details className="rounded-lg border border-gray-200 bg-gray-50">
+      <summary className="cursor-pointer px-5 py-3 text-sm font-medium text-gray-600 hover:text-gray-800">
+        Original situation
+      </summary>
+      <div className="border-t border-gray-200 px-5 pb-4 pt-3 space-y-3">
+        {centralStatement && (
+          <p className="text-sm text-gray-600 italic">{centralStatement}</p>
         )}
-      </p>
-    </div>
+        <p className="whitespace-pre-wrap text-sm text-gray-800">{scenario}</p>
+      </div>
+    </details>
   );
 }
 
@@ -384,8 +336,36 @@ function DeveloperDetails({ graph, selectedQuestion, diagnostics, newlySurfacedN
   );
 }
 
+// ── Loading overlay (for both start and update) ───────────────
+function LoadingOverlay({ isLoading, elapsed, currentMessage, variant }) {
+  if (!isLoading) return null;
+
+  const messages = variant === "update" ? UPDATE_MESSAGES : INITIAL_MESSAGES;
+  let statusText = messages[0].text;
+  for (const m of messages) {
+    if (elapsed >= m.min) statusText = m.text;
+  }
+
+  return (
+    <div className="rounded-lg border border-gray-200 bg-blue-50 px-5 py-6" role="status" aria-busy="true">
+      <div className="flex items-center gap-3">
+        <ActivitySpinner />
+        <span className="text-base font-medium text-blue-900">Working through your situation</span>
+      </div>
+      <p className="mt-2 text-sm text-blue-700">{statusText}</p>
+      <p className="mt-1 text-xs text-blue-500" aria-live="polite">
+        This has been running for {elapsed}s.
+        {variant === "initial" && elapsed >= 45 && (
+          <span className="block mt-1">This can take around a minute with the current local model.</span>
+        )}
+      </p>
+    </div>
+  );
+}
+
 // ── Main workspace component ──────────────────────────────────
 export default function ReasoningWorkspace({
+  scenario,
   status,
   updateStatus,
   result,
@@ -459,25 +439,24 @@ export default function ReasoningWorkspace({
   const genuineCompletion = hasGenuineCompletion(graph);
 
   return (
-    <div className="space-y-5">
+    <div className="space-y-6">
       {/* ── Loading overlays ─────────────────────────────── */}
-      <LoadingOverlay
-        isLoading={status === "loading"}
-        elapsed={startElapsed}
-        currentMessage={startMsg}
-        variant="initial"
-      />
-      {updateStatus === "loading" && (
-        <div className="h-px bg-gray-100" />
+      {status === "loading" && (
+        <LoadingOverlay
+          elapsed={startElapsed}
+          currentMessage={startMsg}
+          variant="initial"
+        />
+      )}
+      {updateStatus === "loading" && (
+        <LoadingOverlay
+          elapsed={updateElapsed}
+          currentMessage={updateMsg}
+          variant="update"
+        />
       )}
-      <LoadingOverlay
-        isLoading={updateStatus === "loading"}
-        elapsed={updateElapsed}
-        currentMessage={updateMsg}
-        variant="update"
-      />
 
-      {/* ── User-facing workspace ────────────────────────── */}
+      {/* ── No graph produced after initial analysis ───────── */}
       {(status === "success" || status === "error") && !graph ? (
         <div className="rounded-lg border border-yellow-300 bg-yellow-50 px-4 py-3 text-sm text-yellow-800">
           {noQuestionReason
@@ -486,32 +465,27 @@ export default function ReasoningWorkspace({
         </div>
       ) : (
         <>
-          {/* Post-update acknowledgement */}
-          {updateStatus === "success" && canAnswer && <UpdateAcknowledgement updateResult={result} />}
+          {/* ── 1. Current investigation (or terminal state) ─ */}
+          {canAnswer && <CurrentInvestigationCard selectedQuestion={selectedQ} graph={graph} />}
 
-          {/* Completion state */}
+          {/* Terminal states occupy the hero position when no question */}
           {status === "success" && !canAnswer && graph && genuineCompletion && (
-            <InvestigationCompleteMessage noQuestionReason={noQuestionReason} />
+            <CompletionCard />
           )}
           {status === "success" && !canAnswer && graph && !genuineCompletion && updateStatus !== "success" && (
-            <div className="rounded-lg border border-gray-200 bg-gray-50 px-5 py-4 text-center">
-              <p className="text-sm text-gray-600">There is no further question the engine can justify at the moment.</p>
-              <p className="mt-1 text-xs text-gray-500">More evidence may be needed before a next step is clear.</p>
-            </div>
+            <EvidenceExhaustedCard noQuestionReason={noQuestionReason} />
           )}
 
-          {/* Situation context */}
-          {graph && <SituationCard centralStatement={graph.centralStatement} />}
-          {graph && <CurrentUnderstanding currentSummary={graph.currentSummary} />}
+          {/* ── 2. Post-update acknowledgement ─────────────── */}
+          {updateStatus === "success" && canAnswer && <UpdateAcknowledgement updateResult={result} />}
 
-          {/* ── Investigation history (below situation, above current focus) ─ */}
+          {/* ── 3. Current understanding ───────────────────── */}
+          {canAnswer && graph && <CurrentUnderstandingCard currentSummary={graph.currentSummary} />}
+
+          {/* ── 4. Investigation history ───────────────────── */}
           <InvestigationHistory turns={investigationHistory} />
 
-          {/* Active investigation (only when we have a question to answer) */}
-          {canAnswer && <CurrentInvestigationCard selectedQuestion={selectedQ} graph={graph} />}
-          {canAnswer && <CurrentFocusCard graph={graph} />}
-
-          {/* ── Answer form ──────────────────────────────── */}
+          {/* ── 5. Response form (immediately after Current investigation) ─ */}
           {canAnswer && (
             <form onSubmit={handleUpdateCaptureAndSubmit} className="space-y-4 rounded-lg border border-gray-200 bg-white p-5">
               <div>
@@ -543,7 +517,10 @@ export default function ReasoningWorkspace({
             </form>
           )}
 
-          {/* ── Developer details (collapsed by default) ─── */}
+          {/* ── 6. Original situation (collapsed by default) ─ */}
+          <OriginalSituation scenario={scenario} centralStatement={graph?.centralStatement} />
+
+          {/* ── 7. Developer details (collapsed by default) ── */}
           {(status === "success" || status === "error") && graph && (
             <DeveloperDetails
               graph={graph}
@@ -553,6 +530,10 @@ export default function ReasoningWorkspace({
               updateResult={updateStatus === "success" ? result : null}
             />
           )}
+
+          {/* ── Terminal state with understanding (when no active question) ─ */}
+          {status === "success" && !canAnswer && graph && genuineCompletion && <CurrentUnderstandingCard currentSummary={graph.currentSummary} />}
+          {status === "success" && !canAnswer && graph && !genuineCompletion && updateStatus !== "success" && <CurrentUnderstandingCard currentSummary={graph.currentSummary} />}
         </>
       )}
 
diff --git a/components/scenario-form.jsx b/components/scenario-form.jsx
index bd598b8..7a6a744 100644
--- a/components/scenario-form.jsx
+++ b/components/scenario-form.jsx
@@ -309,20 +309,20 @@ export default function ScenarioForm() {
 
   return (
     <div className="space-y-6">
-      <form onSubmit={handleSubmit} className="space-y-4">
-        <textarea
-          ref={textareaRef}
-          value={scenario}
-          onChange={(e) => setScenario(e.target.value)}
-          placeholder="Describe the scenario you want analysed..."
-          rows={10}
-          className="w-full rounded-lg border border-gray-300 px-4 py-3 text-sm focus:border-gray-500 focus:outline-none focus:ring-2 focus:ring-gray-400"
-        />
-        <div className="flex items-center justify-between">
-          <span className="text-xs text-gray-400">
-            {scenario.length}/{MAX_LENGTH}
-          </span>
-          {status === "idle" && (
+      {status === "idle" && (
+        <form onSubmit={handleSubmit} className="space-y-4">
+          <textarea
+            ref={textareaRef}
+            value={scenario}
+            onChange={(e) => setScenario(e.target.value)}
+            placeholder="Describe the scenario you want analysed..."
+            rows={10}
+            className="w-full rounded-lg border border-gray-300 px-4 py-3 text-sm focus:border-gray-500 focus:outline-none focus:ring-2 focus:ring-gray-400"
+          />
+          <div className="flex items-center justify-between">
+            <span className="text-xs text-gray-400">
+              {scenario.length}/{MAX_LENGTH}
+            </span>
             <button
               type="submit"
               disabled={!scenario.trim()}
@@ -330,9 +330,9 @@ export default function ScenarioForm() {
             >
               Analyse
             </button>
-          )}
-        </div>
-      </form>
+          </div>
+        </form>
+      )}
 
       {/* ── Initial analysis loading card ─────────────── */}
       {status === "loading" && (
@@ -347,6 +347,7 @@ export default function ScenarioForm() {
       {/* ── Main result workspace ─────────────────────── */}
       {(status === "success" || status === "error" || updateStatus === "success") && (
         <ReasoningWorkspace
+          scenario={scenario}
           status={status}
           updateStatus={updateStatus}
           result={{
@@ -364,6 +365,27 @@ export default function ScenarioForm() {
         />
       )}
 
+      {/* Reset button after successful analysis */}
+      {status === "success" && (
+        <div className="text-center">
+          <button
+            onClick={() => {
+              setScenario("");
+              setStatus("idle");
+              setResult(null);
+              setAnswer("");
+              setUpdateStatus("idle");
+              setUpdateResult(null);
+              setLastSubmittedAnswer("");
+              setUpdateError(null);
+            }}
+            className="rounded-lg border border-gray-300 px-4 py-2 text-sm font-medium text-gray-600 transition hover:bg-gray-50"
+          >
+            Start new investigation
+          </button>
+        </div>
+      )}
+
       {/* Empty state */}
       {status === "idle" && (
         <div className="rounded-lg border border-dashed border-gray-300 bg-gray-50 px-6 py-8 text-center">