diff --git a/web/storyforge-web-v4/assets/app.js b/web/storyforge-web-v4/assets/app.js
index e4653ac..bfdd8d7 100644
--- a/web/storyforge-web-v4/assets/app.js
+++ b/web/storyforge-web-v4/assets/app.js
@@ -4499,8 +4499,12 @@ async function saveCandidateAsBenchmark(candidateIndex, relationType = "benchmar
 
 function screenShell(title, subtitle, actionsHtml, bodyHtml) {
   const actionLayout = splitPrimaryAction(actionsHtml);
+  const body = String(bodyHtml || "");
+  const hasMobileFocusCard = body.includes("mobile-flow-focus-card");
+  const headClassName = ["screen-head"];
+  if (hasMobileFocusCard) headClassName.push("screen-head-has-mobile-focus");
   return `
-    <div class="screen-head">
+    <div class="${headClassName.join(" ")}">
       <div>
         <h2>${escapeHtml(title)}</h2>
         <p>${escapeHtml(subtitle)}</p>
@@ -4510,7 +4514,7 @@ function screenShell(title, subtitle, actionsHtml, bodyHtml) {
         ${actionLayout.secondary ? `<div class="action-row-secondary">${actionLayout.secondary}</div>` : ""}
       </div>
     </div>
-    ${bodyHtml}
+    ${body}
   `;
 }
 
diff --git a/web/storyforge-web-v4/assets/styles.css b/web/storyforge-web-v4/assets/styles.css
index bd67f1b..a306c76 100644
--- a/web/storyforge-web-v4/assets/styles.css
+++ b/web/storyforge-web-v4/assets/styles.css
@@ -42,6 +42,11 @@ body {
   overflow-x: hidden;
 }
 
+body.sheet-open,
+body.mobile-sidebar-open {
+  overflow: hidden;
+}
+
 a {
   color: inherit;
   text-decoration: none;
@@ -2187,6 +2192,10 @@ tbody tr:hover {
     overflow: hidden;
   }
 
+  .screen-head.screen-head-has-mobile-focus p {
+    -webkit-line-clamp: 1;
+  }
+
   .panel-subtitle {
     display: -webkit-box;
     -webkit-line-clamp: 2;
@@ -2232,6 +2241,10 @@ tbody tr:hover {
     display: none;
   }
 
+  .screen-head.screen-head-has-mobile-focus .action-row-secondary {
+    display: none;
+  }
+
   .btn,
   .tab,
   .tag.clickable-tag {
@@ -2289,6 +2302,24 @@ tbody tr:hover {
     min-width: 0;
   }
 
+  .compact-summary-row {
+    flex-wrap: nowrap;
+    overflow-x: auto;
+    overscroll-behavior-x: contain;
+    scrollbar-width: none;
+    padding-bottom: 2px;
+  }
+
+  .compact-summary-row::-webkit-scrollbar {
+    display: none;
+  }
+
+  .compact-summary-row .tag {
+    flex: 0 0 auto;
+    white-space: nowrap;
+    text-align: center;
+  }
+
   .grid-4,
   .grid-5,
   .mini-grid,
@@ -2620,7 +2651,7 @@ tbody tr:hover {
   }
 
   .compact-summary-row .tag {
-    width: calc(50% - 4px);
+    width: auto;
     text-align: center;
   }
 
diff --git a/web/storyforge-web-v4/tests/workbench-pages.test.mjs b/web/storyforge-web-v4/tests/workbench-pages.test.mjs
index f9d20d4..9a03a9e 100644
--- a/web/storyforge-web-v4/tests/workbench-pages.test.mjs
+++ b/web/storyforge-web-v4/tests/workbench-pages.test.mjs
@@ -109,6 +109,7 @@ test("mobile action sheets and oneliner runtime behave like bottom sheets", () =
   assert.match(CSS, /\.sheet-handle\s*\{/);
   assert.match(CSS, /\.sheet-open \.mobile-tabbar\s*\{[\s\S]*opacity:\s*0/);
   assert.match(CSS, /\.oneliner-open \.oneliner-fab\s*\{[\s\S]*opacity:\s*0/);
+  assert.match(CSS, /body\.sheet-open,\s*body\.mobile-sidebar-open\s*\{[\s\S]*overflow:\s*hidden/);
   assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.auth-modal,\s*[\s\S]*\.action-modal,\s*[\s\S]*\.oneliner-panel\s*\{[\s\S]*border-radius:\s*24px 24px 0 0/);
   assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.auth-actions\s*\{[\s\S]*position:\s*sticky/);
   assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.oneliner-composer\s*\{[\s\S]*position:\s*sticky/);
@@ -155,6 +156,13 @@ test("mobile touch targets raise tappable buttons, tabs, and action tags closer
   assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.btn,\s*[\s\S]*\.tab,\s*[\s\S]*\.tag\.clickable-tag\s*\{[\s\S]*display:\s*inline-flex/);
 });
 
+test("mobile compact summaries scroll horizontally instead of stacking into a second row", () => {
+  assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.compact-summary-row\s*\{[\s\S]*flex-wrap:\s*nowrap/);
+  assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.compact-summary-row\s*\{[\s\S]*overflow-x:\s*auto/);
+  assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.compact-summary-row::-webkit-scrollbar\s*\{[\s\S]*display:\s*none/);
+  assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.compact-summary-row \.tag\s*\{[\s\S]*flex:\s*0 0 auto/);
+});
+
 test("action tags render interactive controls as buttons instead of passive spans", () => {
   const actionTagSource = extractBetween(APP, "function actionTag(", "function renderPipelineButton(");
   assert.match(actionTagSource, /if \(targetAction\) \{/);
@@ -172,6 +180,13 @@ test("mobile screen heads split the first action into a primary rail and keep th
   assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.action-row-secondary\s*\{[\s\S]*overflow-x:\s*auto/);
 });
 
+test("mobile screens with a focus card collapse the secondary action rail", () => {
+  assert.match(APP, /const hasMobileFocusCard = body\.includes\("mobile-flow-focus-card"\)/);
+  assert.match(APP, /screen-head-has-mobile-focus/);
+  assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.screen-head\.screen-head-has-mobile-focus \.action-row-secondary\s*\{[\s\S]*display:\s*none/);
+  assert.match(CSS, /@media \(max-width: 760px\)[\s\S]*\.screen-head\.screen-head-has-mobile-focus p\s*\{[\s\S]*-webkit-line-clamp:\s*1/);
+});
+
 test("mobile bottom navigation stays highlighted for grouped related screens", () => {
   assert.match(APP, /function getMobileTabGroup\(screenId = appState\.screen\)/);
   assert.match(APP, /tracking:\s*"discovery"/);