fix: stabilize conclusion map layout

web/apps/console/src/presentation/conclusion/ConclusionScene.test.tsx

@@ -76,4 +76,24 @@ describe("ConclusionScene", () => {
     expect(screen.getByText("Planner proposes; runtime executes.")).toBeInTheDocument();
     expect(screen.getByRole("list", { name: "future work layers" })).toHaveAttribute("data-state", "receded");
   });
+
+  it("keeps evidence as a separately identified node after the runtime", () => {
+    render(<ConclusionScene scene={scene} beat={beat("future")} />);
+    const nodes = [...screen.getByLabelText("contribution flow").children];
+    expect(nodes.map((node) => node.getAttribute("data-node-id"))).toEqual([
+      "planner",
+      "substrate",
+      "runtime",
+      "evidence",
+    ]);
+    expect(nodes[2]).toHaveAttribute("data-node-id", "runtime");
+    expect(nodes[3]).toHaveAttribute("data-node-id", "evidence");
+  });
+
+  it("marks every future-work icon neutral while substrate stays the sole emphasis", () => {
+    render(<ConclusionScene scene={scene} beat={beat("future")} />);
+    const map = screen.getByRole("region", { name: "thesis contribution boundary" });
+    expect(map.querySelector('[data-node-id="substrate"]')).toHaveAttribute("data-emphasis", "substrate");
+    expect([...map.querySelectorAll(".conclusion-map__future svg")].every((icon) => icon.getAttribute("data-emphasis") === "neutral")).toBe(true);
+  });
 });

web/apps/console/src/presentation/conclusion/ConclusionScene.tsx

@@ -61,7 +61,7 @@ export const ConclusionScene: FC<ConclusionSceneProps> = ({ scene, beat }) => {
             const Icon = futureWorkIcons[branch.icon];
             return (
               <li key={branch.id} data-future-work-id={branch.id}>
-                <Icon aria-hidden="true" />
+                <Icon aria-hidden="true" data-emphasis="neutral" />
                 <span>
                   <strong>{branch.label}</strong>
                   <small>{branch.example}</small>

web/apps/console/src/presentation/presentation-css.test.ts

@@ -21,4 +21,17 @@ describe("presentation.css", () => {
 
     expect(breakpointBlock).toMatch(/\.evaluation-board__audit-row\s*\{\s*grid-template-columns: 1fr;/);
   });
+
+  it("places the conclusion evidence beneath substrate at the 1080px breakpoint", () => {
+    expect(css).toMatch(/\.conclusion-map__node--planner\s*\{\s*grid-column: 1;\s*grid-row: 1;/);
+    expect(css).toMatch(/\.conclusion-map__node--substrate\s*\{\s*grid-column: 2;\s*grid-row: 1;/);
+    expect(css).toMatch(/\.conclusion-map__node--runtime\s*\{\s*grid-column: 3;\s*grid-row: 1;/);
+    expect(css).toMatch(/\.conclusion-map__node--evidence\s*\{\s*grid-column: 2;\s*grid-row: 2;/);
+    expect(css).not.toMatch(/\.conclusion-map__node--runtime::after/);
+  });
+
+  it("keeps future-work icons neutral by default", () => {
+    expect(css).toMatch(/\.conclusion-map__future svg\s*\{[^}]*color: var\(--text-secondary\);/s);
+    expect(css).not.toMatch(/\.conclusion-map__future svg\s*\{[^}]*color: var\(--accent-cyan\);/s);
+  });
 });

web/apps/console/src/presentation/presentation.css

@@ -287,7 +287,8 @@
   background: oklch(0.19 0.03 250 / 88%);
 }
 
-.conclusion-map__node:not(:last-child)::after {
+.conclusion-map__node--planner::after,
+.conclusion-map__node--substrate::after {
   position: absolute;
   top: 50%;
   right: -0.85rem;
@@ -352,7 +353,12 @@
   transition: opacity 180ms ease, transform 180ms ease;
 }
 
-.conclusion-map__future svg { flex: 0 0 auto; width: 1.1rem; height: 1.1rem; color: var(--accent-cyan); }
+.conclusion-map__future svg {
+  flex: 0 0 auto;
+  width: 1.1rem;
+  height: 1.1rem;
+  color: var(--text-secondary);
+}
 .conclusion-map__future span { display: grid; gap: 0.2rem; }
 .conclusion-map__future strong { font-size: 0.8rem; }
 .conclusion-map__future small { color: var(--text-secondary); font-family: "Source Sans 3", sans-serif; font-size: 0.76rem; }
@@ -371,6 +377,19 @@
   .conclusion-map__future { grid-template-columns: repeat(3, minmax(0, 1fr)); }
 }
 
+@media (max-width: 1080px) {
+  .conclusion-map__flow {
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    grid-template-rows: auto auto;
+    gap: 0.8rem 1.7rem;
+  }
+
+  .conclusion-map__node--planner { grid-column: 1; grid-row: 1; }
+  .conclusion-map__node--substrate { grid-column: 2; grid-row: 1; }
+  .conclusion-map__node--runtime { grid-column: 3; grid-row: 1; }
+  .conclusion-map__node--evidence { grid-column: 2; grid-row: 2; }
+}
+
 @media (max-width: 640px) {
   .conclusion-map__flow { grid-template-columns: 1fr; gap: 0.85rem; }
   .conclusion-map__node:not(:last-child)::after {