diff --git a/scripts/test_prescreen_ui.cjs b/scripts/test_prescreen_ui.cjs
index 2d01923..d729948 100644
--- a/scripts/test_prescreen_ui.cjs
+++ b/scripts/test_prescreen_ui.cjs
@@ -35,7 +35,11 @@ for (const [name, source] of [["panel", panel], ["lib", lib]]) {
 assert.match(panel, /simulation\.probability_view/, "情景数值必须取自服务端响应");
 
 // 4. 演示值只在演示域显示，且紧邻"人工设定"说明（AC-12/30、DESIGN §38）
-assert.match(panel, /demoValue\(run\?\.data_domain/, "演示值必须按数据域判定后才显示");
+assert.match(panel, /const domainName = run\?\.data_domain/, "演示值必须按数据域判定后才显示");
+assert.match(panel, /demoValue\(domainName, simulation\?\.baseline_probability_view \|\| run\?\.probability_view\)/,
+  "基线演示值必须取自服务端基线视图，不能由前端合成");
+assert.match(panel, /if \(first && first\.data_domain === "demo"\) await applyScenario\(\[\], first\)/,
+  "首屏演示值只对演示域取值，production 域不得请求演示表");
 assert.match(panel, /未完成真实历史校准/, "未校准时必须说明为何不显示概率");
 assert.match(panel, /正式审批由人工决定/, "演示值旁必须有用途边界说明");
 assert.match(lib, /domain !== "demo"/, "lib 必须在非演示域返回 null");
@@ -49,6 +53,12 @@ assert.match(lib, /EMPTY_DIMENSIONS = "当前方案尚未配置核查维度"/);
 assert.match(panel, /shown\.layout === "radar" && <RadarChart/, "只有判定为雷达时才画雷达");
 assert.match(panel, /shown\.layout === "empty" && <div className="ra-empty">/, "空维度用空状态，不补六轴");
 assert.match(panel, /文字列表与图等价/, "图必须有等价文字列表");
+assert.match(panel, /width=\{\d+\} height=\{\d+\} viewBox=/, "雷达必须给显式尺寸，否则会撑满容器（真渲染验证过的缺陷）");
+assert.match(panel, /<text key=\{`label-\$\{item\.id\}`\}/, "雷达必须有轴标签，图不能只有形状");
+assert.match(panel, /strokeDasharray="4 4"/, "基线必须用虚线，不能只靠颜色区分");
+assert.match(panel, /hasScenario = Array\.from\(scenarioStages\.values\(\)\)\.some\(\(item\) => item\.assumed\)/,
+  "没有勾选假设时不得画出实线情景轮廓");
+assert.match(panel, /阶段 \{stage \?\? "—"\} · \{stageName\(stage\)\}/, "维度必须同时给出阶段序号与名称");
 
 // 6. 乱序与过期响应必须丢弃（AC-31）
 assert.match(panel, /ticket !== seq\.current/, "旧请求晚到必须丢弃");
diff --git a/src/components/xingbang/PrescreenPanel.tsx b/src/components/xingbang/PrescreenPanel.tsx
index 9518e01..3a78b4b 100644
--- a/src/components/xingbang/PrescreenPanel.tsx
+++ b/src/components/xingbang/PrescreenPanel.tsx
@@ -50,6 +50,9 @@ export default function PrescreenPanel({project, request, busy, setBusy, setErro
       } else {
         setActions([]);
       }
+      // 演示域的基线演示值来自服务端演示表：首屏就要能看到"演示值 + 人工设定说明"，
+      // 而不是等用户勾选后才出现数字（13 §7）。production 域不取，避免越域数值。
+      if (first && first.data_domain === "demo") await applyScenario([], first);
     } catch (e: any) {
       setError(e.message);
     } finally {
@@ -69,15 +72,16 @@ export default function PrescreenPanel({project, request, busy, setBusy, setErro
       .catch((e: any) => setError(e.message));
   }
 
-  async function applyScenario(keys: string[]) {
-    if (!run) return;
+  async function applyScenario(keys: string[], target?: RunView | null) {
+    const current = target || run;
+    if (!current) return;
     const ticket = ++seq.current;
     setBusy(true); setError(""); setNotice("");
     setScenarioState(keys.length ? "computing" : "baseline");
     try {
       const result: Simulation = await request(
-        `${PRESCREEN}${projectPath}/runs/${encodeURIComponent(run.id)}/simulations`,
-        {assumptions: keys, expected_revision: run.revision});
+        `${PRESCREEN}${projectPath}/runs/${encodeURIComponent(current.id)}/simulations`,
+        {assumptions: keys, expected_revision: current.revision});
       if (ticket !== seq.current) return;                       // 旧请求晚到：丢弃，不覆盖新结果
       const returned = (result.assumptions || []).map((item) => item.key).sort().join(",");
       if (returned !== [...keys].sort().join(",")) return;      // 结果与当前选择不一致：丢弃
@@ -111,9 +115,10 @@ export default function PrescreenPanel({project, request, busy, setBusy, setErro
     opener.current?.focus();
   }
 
-  const baseline = demoValue(run?.data_domain || "demo", run?.probability_view);
-  const scenario = simulation && simulation.status === "ready"
-    ? demoValue(run?.data_domain || "demo", simulation.probability_view) : null;
+  const domainName = run?.data_domain || "demo";
+  const baseline = demoValue(domainName, simulation?.baseline_probability_view || run?.probability_view);
+  const scenario = simulation && simulation.status === "ready" && selected.length
+    ? demoValue(domainName, simulation.probability_view) : null;
   const dimensions = run?.dimension_results || [];
   // 刻度信息来自呈现层：运行视图只带阶段序数，因此默认同一刻度；方案带 scale_id 时按实际判断。
   const shown = presentationFor(dimensions.map((item: any) => ({scale_id: item.scale_id || "stage"})));
@@ -170,7 +175,7 @@ export default function PrescreenPanel({project, request, busy, setBusy, setErro
               const overlay = scenarioStages.get(item.id);
               const stage = overlay ? overlay.scenario_stage : item.stage;
               return <p key={item.id}>
-                <b>{item.id}</b> · {stateLabel(item.state)} · 阶段 {stageName(stage)}
+                <b>{item.id}</b> · {stateLabel(item.state)} · 阶段 {stage ?? "—"} · {stageName(stage)}
                 {overlay?.assumed ? "（本情景假设该维度交叉核验成立；原项目仍待核实）" : ""}
                 {" "}
                 <button className="ra-button" aria-label={`查看 ${item.id} 的依据`}
@@ -228,9 +233,11 @@ function RadarChart({dimensions, scenarioStages}: {dimensions: any[]; scenarioSt
     const overlay = scenarioStages.get(item.id);
     return overlay ? overlay.scenario_stage : item.stage;
   });
-  const hasScenario = scenarioStages.size > 0;
+  // 只有真的存在被假设的维度才画实线：没勾选时把基线复制成"所选情景"是误导
+  const hasScenario = Array.from(scenarioStages.values()).some((item) => item.assumed);
   return <div>
-    <svg role="group" aria-label="证据核验阶段雷达，详细内容见下方维度按钮" viewBox="-140 -120 280 250">
+    <svg role="group" aria-label="证据核验阶段雷达，详细内容见下方维度按钮"
+         width={330} height={260} viewBox="-150 -130 300 270">
       {[1, 2, 3, 4].map((step) => <polygon key={step} className="radar-grid" fill="none" stroke="currentColor" opacity={0.2}
         points={polygon(Array(count).fill(step))} />)}
       {dimensions.map((item, index) => {
@@ -241,6 +248,11 @@ function RadarChart({dimensions, scenarioStages}: {dimensions: any[]; scenarioSt
         points={polygon(baselineStages)} />
       {hasScenario && <polygon data-series="scenario" fill="currentColor" fillOpacity={0.15} stroke="currentColor"
         points={polygon(scenarioStagesList)} />}
+      {dimensions.map((item, index) => {
+        const [x, y] = point(index, 4.7);
+        return <text key={`label-${item.id}`} x={x} y={y} fontSize={11} textAnchor="middle"
+                     fill="currentColor">{item.id}</text>;
+      })}
     </svg>
     <p>虚线为基线，实线为所选假设；两者都只是阶段，不是分数。</p>
   </div>;