diff --git a/changelog.d/1410-scope-controls-hud-readability.md b/changelog.d/1410-scope-controls-hud-readability.md
new file mode 100644
index 000000000..38cfdf48e
--- /dev/null
+++ b/changelog.d/1410-scope-controls-hud-readability.md
@@ -0,0 +1,8 @@
+- Add a Scope checkbox and extend feathering to 200%, retaining scope settings
+  across HUD layouts, share links and scenes. First run opens with Scope ON at
+  100% feather; explicit settings and historical links retain their values. Give
+  Tactical, Operator and Minimal text black backplates only when Scope is OFF,
+  including vertical metadata, without changing the original HUD text color, glow or
+  opacity. Scope ON retains its original HUD presentation (bilawalsidhu, #1410).
+  Keep title and tagline positions stable when toggling Scope, include the eye
+  in the title backing, and brighten the two secondary labels only with Scope OFF.
diff --git a/docs/CURRENT-STATE.md b/docs/CURRENT-STATE.md
index 0ace86811..b4ed2bacb 100644
--- a/docs/CURRENT-STATE.md
+++ b/docs/CURRENT-STATE.md
@@ -196,6 +196,23 @@ Regression coverage lives in `src/tools/area.test.mjs`,
 `src/tools/queries/environment.test.mjs` and
 `src/layers/perimeters/cards.test.mjs`.
 
+## Scope display controls
+
+Display's native Scope checkbox defaults ON with feather at 100%, adjustable
+from 0–200%. OFF disables the slider while retaining its value. HUD layout
+changes preserve both settings; share links and scenes restore them. The
+historical missing-`scf` fallback remains 35%; explicit 0% keeps the hard edge.
+
+With Scope OFF, Tactical, Operator and Minimal add text-sized black backplates
+at 70% opacity behind telemetry, vertical metadata and scene chrome. Original
+HUD text color, glow and opacity are preserved. Scope OFF brightens the tagline
+and Active Style label with the shared secondary text color. The title plate
+covers the eye and title without moving the title or tagline. Scope ON retains
+the original HUD presentation; Cyber retains its existing skin.
+
+`node scripts/qa-scope-hud.mjs` checks native input, range, layout persistence,
+restoration and both Scope presentations. `QA_SCREENSHOT_DIR` saves screenshots.
+
 ## Cyber HUD — September 30, 2026
 
 Display > HUD > Layout includes Cyber, also available through the HUD voice
@@ -5545,10 +5562,11 @@ the `_detectionUserOverridden` / explicit-intent flags that would suppress a
 separate landed behaviour. Pinned in `src/reasonableDefaults.test.mjs` (feather,
 detection, OUTSIDE opacity) and `src/data/layerState.test.mjs` (3D).
 
-**The 2026-08-24 defaults** (superseding the interim 08-23 values of 8%/3%):
+**Current defaults** (scope feather revised to 100% on 2026-10-25;
+detection and outside opacity retain the 2026-08-24 defaults):
 the first-run look is Detection DENSE
-`75%`, ELASTIC allocation, Fade `7%`, OUTSIDE opacity `1%`, scope feather `11%`,
-and 3D fleet mode PROXIMITY, with `AIRCRAFT_BRACKET_FLOOR_ANCHOR` at `0.01` so
+`75%`, ELASTIC allocation, Fade `7%`, OUTSIDE opacity `1%`, Scope ON with feather
+`100%`, and 3D fleet mode PROXIMITY, with `AIRCRAFT_BRACKET_FLOOR_ANCHOR` at `0.01` so
 brackets keep their approved brightness exactly at the new OUTSIDE default. Two
 terms that must never be conflated: scope FEATHER softens the black scope-mask
 edge; detection FADE is the label/card fading band around the keyhole. The
@@ -5618,14 +5636,10 @@ easier to meet (detection is now on more often), but does not create it.
   calibrated so `AIRCRAFT_BRACKET_ALPHA_FLOOR` (0.35) lands exactly at the
   default, and the mapping follows bracket brightness rather than slider
   position. The `ko` PARSE fallback stays at `5`.
-- **Scope feather: `11%`** — a soft scope-mask edge (moved `0% → 8% → 11%`; `0%` hard crop for one day,
-  `35%` before that). `SCOPE_FEATHER_RATIO_DEFAULT` in `src/scopeMask.js`,
-  mirrored by `#scope-feather-slider`'s markup value AND readout and
-  `_scopeFeatherPct` in `sharelink.js`. The slider is untouched and still spans
-  0–100, and an explicit `0` is still the hard-crop path — pinned, so moving the
-  default cannot quietly delete it. The `scf` PARSE fallback deliberately stays
-  at `35`: a link predating `scf` was authored when 35 was what its author saw,
-  and restoring the author's view is what a share link is for.
+- **Scope: `ON`, feather: `100%`**. `SCOPE_FEATHER_RATIO_DEFAULT` in
+  `src/scopeMask.js` matches the slider, readout and share generator. The range
+  is 0–200%; explicit 0% is a hard edge. Missing-`scf` links retain the historical
+  35% parse fallback.
 - **3D aircraft models: `ON`, mode `proximity`** — see the 3D Aircraft section
   above and the DISPLAY-rail entry below (was `OFF`).
 - Style shader starting params: CRT/NVG/FLIR pixelation `1.2` (just above the native `1.0` floor); thermal/FLIR ships an optional Ironbow "Predator" palette (`palette` uniform, default `0` = accurate grayscale).
diff --git a/scripts/format-scope.json b/scripts/format-scope.json
index 20e28122a..e60413624 100644
--- a/scripts/format-scope.json
+++ b/scripts/format-scope.json
@@ -194,6 +194,7 @@
   "src/ui/visualInput.js",
   "src/ui/visualInput.test.mjs",
   "scripts/qa-visual-input.mjs",
+  "scripts/qa-scope-hud.mjs",
   "scripts/qa-segmented-controls.mjs",
   "src/ui/displayControls.js",
   "src/ui/segmentedControl.test.mjs",
diff --git a/scripts/package-boundaries.json b/scripts/package-boundaries.json
index 89589091a..d15897175 100644
--- a/scripts/package-boundaries.json
+++ b/scripts/package-boundaries.json
@@ -805,7 +805,8 @@
       "src/ui/keyGuidance.js",
       "src/ui/layerNames.js",
       "src/ui/statusText.js",
-      "src/ui/statusBadge.js"
+      "src/ui/statusBadge.js",
+      "src/scopeMaskPolicy.js"
     ],
     "external": ["cesium"]
   },
@@ -2574,7 +2575,8 @@
       "src/voice/geminiAudio.js",
       "src/voice/geminiCaptureWorklet.js",
       "src/ui/statusBadge.js",
-      "src/sceneCommandRelease.js"
+      "src/sceneCommandRelease.js",
+      "src/scopeMaskPolicy.js"
     ],
     "external": [
       "hls.js",
@@ -3295,7 +3297,9 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
-      "src/i18n/locales/zh-CN.json"
+      "src/i18n/locales/zh-CN.json",
+      "src/scopeMaskPolicy.js",
+      "src/ui/displayControls.js"
     ],
     "external": ["cesium"]
   },
diff --git a/scripts/qa-scope-hud.mjs b/scripts/qa-scope-hud.mjs
new file mode 100644
index 000000000..7fece45ee
--- /dev/null
+++ b/scripts/qa-scope-hud.mjs
@@ -0,0 +1,681 @@
+#!/usr/bin/env node
+/**
+ * Scope and HUD browser acceptance. Requires the development server.
+ * Run: node scripts/qa-scope-hud.mjs
+ * Optional: QA_BASE_URL, QA_SCREENSHOT_DIR (screenshots stay outside the repo).
+ * Proves a fresh boot defaults to Scope ON at 100%, native checkbox click/Space,
+ * feather 0/11/100/200, layout independence,
+ * share/scene restore, and visible text backing including rotated metadata.
+ */
+import fs from 'node:fs';
+import path from 'node:path';
+import puppeteer from 'puppeteer';
+
+const browser = await puppeteer.launch({
+  headless: true,
+  args: [
+    '--no-sandbox',
+    ...(process.platform === 'darwin'
+      ? ['--use-angle=metal', '--enable-gpu']
+      : ['--use-gl=angle', '--use-angle=swiftshader']),
+  ],
+});
+const page = await browser.newPage();
+const errors = [];
+page.on('pageerror', (error) => errors.push(error.message));
+let failures = 0;
+const check = (name, passed, detail) => {
+  console.log(`[${passed ? 'PASS' : 'FAIL'}] ${name}`);
+  if (!passed) {
+    failures += 1;
+    if (detail) console.log(JSON.stringify(detail));
+  }
+};
+const readScope = () =>
+  page.evaluate(() => {
+    const scope = window.__godsEyeView.styleManager.getVisualState().scope;
+    const canvas = document.getElementById('scope-mask');
+    const context = canvas.getContext('2d');
+    const radialX = Math.round(
+      canvas.width / 2 + Math.min(canvas.width, canvas.height) * 0.35,
+    );
+    return {
+      enabled: scope.enabled,
+      feather: scope.featherPct / 100,
+      cornerAlpha: context.getImageData(1, 1, 1, 1).data[3],
+      radialAlpha: context.getImageData(
+        radialX,
+        Math.round(canvas.height / 2),
+        1,
+        1,
+      ).data[3],
+      checked: document.getElementById('scope-toggle').checked,
+      disabled: document.getElementById('scope-feather-slider').disabled,
+      value: Number(document.getElementById('scope-feather-slider').value),
+      readout: document.getElementById('scope-feather-value').textContent,
+    };
+  });
+
+const readHudGlyphs = () =>
+  page.evaluate(() => {
+    const hud = document.getElementById('intel-hud');
+    const probe = document.createElement('span');
+    probe.style.display = 'none';
+    hud.appendChild(probe);
+    const baseline = {
+      color: getComputedStyle(probe).color,
+      shadow: getComputedStyle(probe).textShadow,
+    };
+    probe.remove();
+    const glyphs = [
+      '.hud-mode',
+      '.hud-system',
+      '.hud-summary-label',
+      '.hud-summary',
+      '.hud-orbital',
+      '#hud-mgrs',
+      '#hud-coll',
+    ].map((selector) => {
+      const el = hud.querySelector(selector);
+      const style = getComputedStyle(el);
+      let opacity = 1;
+      for (
+        let current = el;
+        current && current !== hud;
+        current = current.parentElement
+      )
+        opacity *= Number(getComputedStyle(current).opacity);
+      return {
+        selector,
+        color: style.color,
+        shadow: style.textShadow,
+        opacity,
+      };
+    });
+    return { baseline, glyphs };
+  });
+
+async function settleTextBackings(enabled) {
+  // The pre-existing active-style value transitions all properties for 300ms.
+  // Wait for its backing to finish changing before inspecting or capturing it.
+  await page
+    .waitForFunction(
+      (scopeEnabled) => {
+        const expected = scopeEnabled
+          ? 'rgba(0, 0, 0, 0)'
+          : 'rgba(0, 0, 0, 0.7)';
+        return [
+          ...document.querySelectorAll(
+            '#intel-hud .hud-readout, .scene-text-holdout',
+          ),
+        ].every(
+          (el) =>
+            getComputedStyle(el).backgroundColor === expected &&
+            getComputedStyle(el).boxShadow === 'none',
+        );
+      },
+      { timeout: 2_000 },
+      enabled,
+    )
+    .catch(() => null);
+}
+
+const readSceneChrome = () =>
+  page.evaluate(() => {
+    const title = document.querySelector('#title-bar h1');
+    const eye = title.querySelector('.title-logo');
+    const subtitle = document.querySelector('#title-bar .subtitle');
+    const label = document.querySelector('#style-indicator .indicator-label');
+    const rect = (el, text = false) => {
+      if (!el.getClientRects().length) return null;
+      const range = document.createRange();
+      range.selectNodeContents(el);
+      const box = text
+        ? range.getBoundingClientRect()
+        : el.getBoundingClientRect();
+      return {
+        left: box.left,
+        top: box.top,
+        right: box.right,
+        bottom: box.bottom,
+      };
+    };
+    const titleBox = rect(title);
+    const eyeBox = rect(eye);
+    const backing = getComputedStyle(title, '::before');
+    const plate = {
+      left: titleBox.left + parseFloat(backing.left),
+      top: titleBox.top + parseFloat(backing.top),
+      right: titleBox.right - parseFloat(backing.right),
+      bottom: titleBox.bottom - parseFloat(backing.bottom),
+    };
+    const contains = (box) =>
+      Object.entries(box).every(([side, value]) =>
+        ['left', 'top'].includes(side)
+          ? plate[side] <= value + 0.5
+          : plate[side] >= value - 0.5,
+      );
+    const probe = document.createElement('span');
+    document.body.appendChild(probe);
+    probe.style.color = 'var(--text-dim)';
+    const dim = getComputedStyle(probe).color;
+    probe.style.color = 'var(--text-secondary)';
+    const secondary = getComputedStyle(probe).color;
+    probe.remove();
+    return {
+      positions: {
+        title: titleBox,
+        eye: eyeBox,
+        text: rect(title.querySelector('[translate="no"]'), true),
+        subtitle: rect(subtitle, true),
+      },
+      titleUnbacked: backing.backgroundColor === 'rgba(0, 0, 0, 0)',
+      titleCovered:
+        backing.position === 'absolute' &&
+        backing.backgroundColor === 'rgba(0, 0, 0, 0.7)' &&
+        contains(titleBox) &&
+        contains(eyeBox),
+      leftAligned:
+        !rect(subtitle) || Math.abs(plate.left - rect(subtitle).left) <= 0.5,
+      colors: [getComputedStyle(subtitle).color, getComputedStyle(label).color],
+      dim,
+      secondary,
+    };
+  });
+
+function checkSceneChrome(name, before, after) {
+  const stable = Object.keys(before.positions).every((key) => {
+    const a = before.positions[key];
+    const b = after.positions[key];
+    return a && b
+      ? Object.keys(a).every((side) => Math.abs(a[side] - b[side]) <= 0.5)
+      : a === b;
+  });
+  check(`${name}: title, eye and subtitle stay in place across Scope`, stable, {
+    before,
+    after,
+  });
+  check(
+    `${name}: OFF title plate covers the eye and aligns with the subtitle`,
+    before.titleUnbacked && after.titleCovered && after.leftAligned,
+    after,
+  );
+  check(
+    `${name}: secondary labels brighten only with Scope OFF`,
+    before.colors.every((color) => color === before.dim) &&
+      after.colors.every((color) => color === after.secondary),
+    { before: before.colors, after: after.colors },
+  );
+}
+
+async function openApplication(url) {
+  await page.goto(url.href, { waitUntil: 'domcontentloaded' });
+  await page.waitForFunction(
+    () => window.__godsEyeView?.styleManager?._applicationShortcuts,
+    { timeout: 60_000 },
+  );
+  await page.waitForFunction(
+    () => {
+      const cover = document.getElementById('loading-screen');
+      return (
+        cover?.classList.contains('hidden') &&
+        Number(getComputedStyle(cover).opacity) === 0
+      );
+    },
+    { timeout: 60_000 },
+  );
+}
+
+try {
+  await page.setViewport({ width: 1440, height: 900 });
+  const url = new URL(process.env.QA_BASE_URL || 'http://127.0.0.1:4173');
+  url.searchParams.set('welcome', '0');
+  // This browser has a fresh profile. Start without authored state so the
+  // first assertion exercises the defaults rather than a share-link restore.
+  url.hash = '';
+  await openApplication(url);
+  const fresh = await readScope();
+  check(
+    'bare-URL fresh boot opens Scope ON with 100% feather',
+    fresh.enabled &&
+      fresh.checked &&
+      !fresh.disabled &&
+      fresh.feather === 1 &&
+      fresh.value === 100 &&
+      fresh.readout === '100%' &&
+      fresh.cornerAlpha > 0,
+    fresh,
+  );
+
+  // Use a known city view for canvas and readability checks below.
+  url.hash =
+    'v=2&lat=30.2672&lon=-97.7431&alt=2500&heading=0&pitch=-45&roll=0&map=esri&sc=1&scf=100&l=';
+  // Changing only the hash does not rerun startup restoration. Leave the app
+  // document first so this fixture is applied by a new application boot.
+  await page.goto('about:blank');
+  await openApplication(url);
+  await page.evaluate(() => {
+    const manager = window.__godsEyeView.styleManager;
+    manager.setPanelCollapsed('pp-toggles', false, {
+      persist: false,
+      syncShare: false,
+    });
+    manager.hud.setMode('on');
+    manager.setStyle('normal');
+  });
+  const initial = await readScope();
+  check(
+    'Austin fixture restores Scope ON and 100% feather',
+    initial.enabled &&
+      initial.checked &&
+      !initial.disabled &&
+      initial.feather === 1 &&
+      initial.value === 100 &&
+      initial.readout === '100%' &&
+      initial.cornerAlpha > 0,
+    initial,
+  );
+  const name = await page.$eval('#scope-toggle', (el) => ({
+    type: el.type,
+    label: el.labels?.[0]?.textContent.trim(),
+  }));
+  check(
+    'Scope uses a native checkbox with a visible label',
+    name.type === 'checkbox' && name.label?.includes('Scope'),
+    name,
+  );
+  await page.click('#scope-toggle');
+  const off = await readScope();
+  check(
+    'click disables Scope and its feather slider',
+    !off.enabled &&
+      !off.checked &&
+      off.disabled &&
+      off.feather === 1 &&
+      off.cornerAlpha === 0,
+    off,
+  );
+  await page.focus('#scope-toggle');
+  await page.keyboard.press('Space');
+  const on = await readScope();
+  check(
+    'Space re-enables the native checkbox without losing feather',
+    on.enabled &&
+      on.checked &&
+      !on.disabled &&
+      on.feather === 1 &&
+      on.cornerAlpha > 0,
+    on,
+  );
+
+  const paintedAlpha = [];
+  for (const pct of [0, 11, 100, 200]) {
+    await page.$eval(
+      '#scope-feather-slider',
+      (el, value) => {
+        el.value = String(value);
+        el.dispatchEvent(new Event('input', { bubbles: true }));
+      },
+      pct,
+    );
+    const state = await readScope();
+    paintedAlpha.push(state.radialAlpha);
+    check(
+      `feather ${pct}% reaches the mask and readout`,
+      state.value === pct &&
+        state.feather === pct / 100 &&
+        state.readout === `${pct}%`,
+      state,
+    );
+  }
+  check(
+    'painted gradient widens beyond the old 100% ceiling',
+    paintedAlpha[0] === 0 &&
+      paintedAlpha[1] === 0 &&
+      paintedAlpha[2] > 0 &&
+      paintedAlpha[3] > paintedAlpha[2],
+    paintedAlpha,
+  );
+  await page.focus('#scope-feather-slider');
+  await page.keyboard.press('Home');
+  check('native Home reaches the hard edge', (await readScope()).feather === 0);
+  await page.keyboard.press('End');
+  check(
+    'native End reaches the expanded 200% maximum',
+    (await readScope()).feather === 2,
+  );
+  await page.click('#scope-toggle');
+  for (const layout of ['minimal', 'operator', 'cyber', 'tactical']) {
+    await page.select('#hud-layout-select', layout);
+    const state = await readScope();
+    check(
+      `Scope OFF and 200% survive ${layout}`,
+      !state.enabled &&
+        !state.checked &&
+        state.disabled &&
+        state.feather === 2 &&
+        state.value === 200 &&
+        state.cornerAlpha === 0,
+      state,
+    );
+  }
+
+  const restored = await page.evaluate(async () => {
+    const manager = window.__godsEyeView.styleManager;
+    const links = manager.shareLinkManager;
+    manager._syncShareState();
+    const params = links._buildHashParams();
+    const encoded = { enabled: params.get('sc'), feather: params.get('scf') };
+    await manager.applyVisualState({ scope: { enabled: true, featherPct: 0 } });
+    await manager._visualSettings.restoreShareState({
+      scopeEnabled: encoded.enabled === '1',
+      scopeFeatherPct: Number(encoded.feather),
+    });
+    const shared = manager.getVisualState().scope;
+    await manager.applyVisualState({
+      scope: { enabled: true, featherPct: 200 },
+    });
+    const scene = manager.getVisualState().scope;
+    await manager.applyVisualState({
+      scope: { enabled: false, featherPct: 200 },
+    });
+    return { encoded, shared, scene };
+  });
+  check(
+    'share state serializes and restores Scope OFF with 200%',
+    restored.encoded.enabled === '0' &&
+      restored.encoded.feather === '200' &&
+      restored.shared.enabled === false &&
+      restored.shared.featherPct === 200,
+    restored,
+  );
+  check(
+    'scene state restores Scope ON with 200%',
+    restored.scene.enabled === true && restored.scene.featherPct === 200,
+    restored,
+  );
+
+  for (const layout of ['minimal', 'operator', 'tactical']) {
+    await page.select('#hud-layout-select', layout);
+    await page.evaluate(() =>
+      window.__godsEyeView.styleManager.applyVisualState({
+        scope: { enabled: true, featherPct: 100 },
+      }),
+    );
+    await settleTextBackings(true);
+    const originalGlyphs = await readHudGlyphs();
+    const originalChrome = await readSceneChrome();
+    const original = await page.evaluate(() => {
+      const hud = document.getElementById('intel-hud');
+      const wrappers = [...hud.querySelectorAll('.hud-readout')];
+      const scene = [...document.querySelectorAll('.scene-text-holdout')];
+      const unexpectedBackings = [...wrappers, ...scene]
+        .map((el) => {
+          const style = getComputedStyle(el);
+          return {
+            selector: el.id || el.className,
+            background: style.backgroundColor,
+            shadow: style.boxShadow,
+          };
+        })
+        .filter(
+          (style) =>
+            style.background !== 'rgba(0, 0, 0, 0)' || style.shadow !== 'none',
+        );
+      return {
+        markerAbsent: !document.documentElement.hasAttribute('data-scope-mask'),
+        unbacked: unexpectedBackings.length === 0,
+        unexpectedBackings,
+        wrappersTransparent: wrappers.every(
+          (el) => getComputedStyle(el).display === 'contents',
+        ),
+        operatorFrame:
+          hud.dataset.variant !== 'operator' ||
+          (getComputedStyle(hud.querySelector('.hud-corner'))
+            .backgroundColor === 'rgba(0, 0, 0, 0.36)' &&
+            getComputedStyle(hud.querySelector('.hud-top-bar'))
+              .backgroundImage !== 'none'),
+      };
+    });
+    check(
+      `${layout}: Scope ON retains the original presentation without new backplates`,
+      original.markerAbsent &&
+        original.unbacked &&
+        original.wrappersTransparent &&
+        original.operatorFrame,
+      original,
+    );
+    check(
+      `${layout}: original HUD color, glow and metadata alpha remain intact`,
+      originalGlyphs.glyphs.every(
+        (glyph) =>
+          glyph.color === originalGlyphs.baseline.color &&
+          glyph.shadow === originalGlyphs.baseline.shadow,
+      ) &&
+        originalGlyphs.glyphs.find(
+          (glyph) => glyph.selector === '.hud-summary-label',
+        ).opacity === 0.55 &&
+        originalGlyphs.glyphs.find((glyph) => glyph.selector === '.hud-orbital')
+          .opacity === 0.7 &&
+        originalGlyphs.glyphs.find((glyph) => glyph.selector === '#hud-coll')
+          .opacity === 0.5,
+      originalGlyphs,
+    );
+    if (process.env.QA_SCREENSHOT_DIR) {
+      fs.mkdirSync(process.env.QA_SCREENSHOT_DIR, { recursive: true });
+      await page.screenshot({
+        path: path.join(
+          process.env.QA_SCREENSHOT_DIR,
+          `scope-on-${layout}.png`,
+        ),
+      });
+    }
+    await page.evaluate(() =>
+      window.__godsEyeView.styleManager.applyVisualState({
+        scope: { enabled: false },
+      }),
+    );
+    await settleTextBackings(false);
+    const backedGlyphs = await readHudGlyphs();
+    checkSceneChrome(layout, originalChrome, await readSceneChrome());
+    check(
+      `${layout}: Scope OFF adds backing without changing glyph styles`,
+      JSON.stringify(backedGlyphs) === JSON.stringify(originalGlyphs),
+      backedGlyphs,
+    );
+    const coverage = await page.evaluate(() => {
+      const hud = document.getElementById('intel-hud');
+      const walker = document.createTreeWalker(hud, NodeFilter.SHOW_TEXT);
+      const missing = [];
+      let visible = 0;
+      let node;
+      while ((node = walker.nextNode())) {
+        if (
+          !node.textContent.trim() ||
+          node.parentElement.closest('.hud-bracket')
+        )
+          continue;
+        const range = document.createRange();
+        range.selectNodeContents(node);
+        if (
+          ![...range.getClientRects()].some(
+            (rect) => rect.width > 0 && rect.height > 0,
+          )
+        )
+          continue;
+        visible += 1;
+        const backing = node.parentElement.closest('.hud-readout');
+        const color = backing && getComputedStyle(backing).backgroundColor;
+        if (
+          !backing ||
+          color !== 'rgba(0, 0, 0, 0.7)' ||
+          getComputedStyle(backing).boxShadow !== 'none' ||
+          backing.parentElement.closest('.hud-readout')
+        )
+          missing.push(node.textContent.trim());
+      }
+      const wrapped = [...hud.querySelectorAll('.hud-readout')].filter(
+        (el) => el.offsetWidth > 0 && el.offsetHeight > 0,
+      );
+      const empty = wrapped.filter((el) => !el.innerText.trim()).length;
+      const overlaps = [];
+      for (const parent of new Set(wrapped.map((el) => el.parentElement))) {
+        const siblings = wrapped.filter((el) => el.parentElement === parent);
+        for (let i = 1; i < siblings.length; i += 1) {
+          const previous = siblings[i - 1].getBoundingClientRect();
+          const current = siblings[i].getBoundingClientRect();
+          const horizontal =
+            Math.min(previous.right, current.right) -
+            Math.max(previous.left, current.left);
+          const vertical =
+            Math.min(previous.bottom, current.bottom) -
+            Math.max(previous.top, current.top);
+          // Horizontal bars share a vertical band. Only intersecting text boxes
+          // can stack their backing alpha; allow subpixel layout rounding.
+          if (horizontal > 0.5 && vertical > 0.5) {
+            overlaps.push({
+              parent: parent.className,
+              previous: siblings[i - 1].innerText,
+              current: siblings[i].innerText,
+              vertical,
+            });
+          }
+        }
+      }
+      const lineIds = [
+        'hud-mgrs',
+        'hud-latlon',
+        'hud-gsd',
+        'hud-alt',
+        'hud-timestamp',
+        'hud-bottom-line',
+      ];
+      const multiline = lineIds.filter((id) => {
+        const el = document.getElementById(id);
+        if (!el.getClientRects().length) return false;
+        const range = document.createRange();
+        range.selectNodeContents(el);
+        return (
+          range.getBoundingClientRect().height >
+          parseFloat(getComputedStyle(el).lineHeight) * 1.5
+        );
+      });
+      const edges = [...hud.querySelectorAll('.hud-edge')]
+        .filter((el) => getComputedStyle(el).display !== 'none')
+        .map((el) => {
+          const box = el.querySelector('.hud-readout').getBoundingClientRect();
+          return (
+            getComputedStyle(el).transform !== 'none' &&
+            box.height > box.width &&
+            Number(getComputedStyle(el).opacity) === 1
+          );
+        });
+      const broadBackings = [
+        ...hud.querySelectorAll('.hud-corner, .hud-top-bar, .hud-bottom-bar'),
+      ].filter(
+        (el) =>
+          el.offsetWidth > 0 &&
+          getComputedStyle(el).backgroundColor !== 'rgba(0, 0, 0, 0)',
+      );
+      return {
+        scopeOff: document.documentElement.dataset.scopeMask === 'off',
+        visible,
+        missing,
+        empty,
+        overlaps,
+        multiline,
+        edges,
+        broadBackings: broadBackings.length,
+      };
+    });
+    check(
+      `${layout}: all visible HUD text has one backing`,
+      coverage.scopeOff &&
+        coverage.visible > 0 &&
+        coverage.missing.length === 0 &&
+        coverage.empty === 0 &&
+        coverage.broadBackings === 0,
+      coverage,
+    );
+    check(
+      `${layout}: adjacent readout backings do not overlap`,
+      coverage.overlaps.length === 0,
+      coverage,
+    );
+    check(
+      `${layout}: desktop telemetry remains single line; rotated backing follows the labels`,
+      coverage.multiline.length === 0 && coverage.edges.every(Boolean),
+      coverage,
+    );
+    if (process.env.QA_SCREENSHOT_DIR) {
+      fs.mkdirSync(process.env.QA_SCREENSHOT_DIR, { recursive: true });
+      await page.screenshot({
+        path: path.join(
+          process.env.QA_SCREENSHOT_DIR,
+          `scope-off-${layout}.png`,
+        ),
+      });
+    }
+  }
+  const details = await page.evaluate(() => {
+    const summary = document.getElementById('hud-summary');
+    summary.textContent = 'LONG TELEMETRY SUMMARY '.repeat(30);
+    const ais = document.getElementById('hud-ais-vessel');
+    ais.textContent = 'AIS: 4 VESSELS\nLATEST OBSERVATION';
+    return {
+      summaryClipped:
+        summary.scrollWidth > summary.clientWidth &&
+        getComputedStyle(summary).textOverflow === 'ellipsis',
+      aisMultiline:
+        getComputedStyle(ais).whiteSpace === 'pre-line' &&
+        ais.textContent.split('\n').length === 2 &&
+        ais.getBoundingClientRect().height + 0.5 >=
+          parseFloat(getComputedStyle(ais).lineHeight) * 2,
+      recColor: getComputedStyle(document.getElementById('hud-rec-dot')).color,
+    };
+  });
+  check(
+    'summary clipping, multiline AIS and red REC dot retain their behavior',
+    details.summaryClipped &&
+      details.aisMultiline &&
+      details.recColor === 'rgb(255, 51, 51)',
+    details,
+  );
+  await page.setViewport({ width: 390, height: 844 });
+  await page.select('#hud-layout-select', 'minimal');
+  const narrow = await page.evaluate(() =>
+    [...document.querySelectorAll('#intel-hud .hud-readout')]
+      .filter(
+        (el) =>
+          el.getClientRects().length &&
+          getComputedStyle(el).display !== 'contents',
+      )
+      .every((el) => {
+        const box = el.getBoundingClientRect();
+        return box.left >= 0 && box.right <= innerWidth;
+      }),
+  );
+  check('narrow HUD text backings stay within the viewport', narrow);
+  for (const layout of ['minimal', 'operator', 'tactical']) {
+    await page.select('#hud-layout-select', layout);
+    await page.evaluate(() =>
+      window.__godsEyeView.styleManager.applyVisualState({
+        scope: { enabled: true },
+      }),
+    );
+    await settleTextBackings(true);
+    const before = await readSceneChrome();
+    await page.evaluate(() =>
+      window.__godsEyeView.styleManager.applyVisualState({
+        scope: { enabled: false },
+      }),
+    );
+    await settleTextBackings(false);
+    checkSceneChrome(`narrow ${layout}`, before, await readSceneChrome());
+  }
+  check('runtime has no uncaught browser errors', errors.length === 0, errors);
+} finally {
+  await browser.close();
+}
+console.log(`RESULT: ${failures} failures`);
+process.exitCode = failures ? 1 : 0;
diff --git a/src/hud.js b/src/hud.js
index 1428f8503..954e3ea94 100644
--- a/src/hud.js
+++ b/src/hud.js
@@ -282,28 +282,28 @@ export class IntelHUD {
       <div class="hud-sonar" aria-hidden="true"></div>
 
       <div class="hud-top-bar">
-        <span class="hud-top-bar-left">TOP SECRET // SI-TK // NOFORN</span>
-        <span class="hud-top-bar-center">${this._missionId}</span>
-        <span class="hud-top-bar-right">PAGE 1/1</span>
+        <span class="hud-readout"><span class="hud-top-bar-left">TOP SECRET // SI-TK // NOFORN</span></span>
+        <span class="hud-readout"><span class="hud-top-bar-center">${this._missionId}</span></span>
+        <span class="hud-readout"><span class="hud-top-bar-right">PAGE 1/1</span></span>
       </div>
 
       <div class="hud-corner hud-top-left">
         <div class="hud-bracket">┌</div>
         <div class="hud-content">
-          <div class="hud-classification">TOP SECRET // SI-TK // NOFORN</div>
-          <div class="hud-system">${this._missionId}  ${this._sensorId}</div>
-          <div class="hud-mode" id="hud-mode">${t(MODE_LABELS.normal)}</div>
+          <div class="hud-readout"><div class="hud-classification">TOP SECRET // SI-TK // NOFORN</div></div>
+          <div class="hud-readout"><div class="hud-system">${this._missionId}  ${this._sensorId}</div></div>
+          <div class="hud-readout"><div class="hud-mode" id="hud-mode">${t(MODE_LABELS.normal)}</div></div>
           <div class="hud-summary-wrap">
-            <div class="hud-summary-label">${t('SUMMARY')}</div>
-            <div class="hud-summary" id="hud-summary">${t('Awaiting telemetry...')}</div>
+            <div class="hud-readout"><div class="hud-summary-label">${t('SUMMARY')}</div></div>
+            <div class="hud-readout"><div class="hud-summary" id="hud-summary">${t('Awaiting telemetry...')}</div></div>
           </div>
         </div>
       </div>
 
       <div class="hud-corner hud-top-right">
         <div class="hud-content" style="text-align:right">
-          <div class="hud-rec"><span id="hud-rec-dot">●</span> ${t('REC')}  <span id="hud-timestamp">2026-01-01 00:00:00Z</span></div>
-          <div class="hud-orbital">ORB: ${this._orbitNum}  PASS: DESC-${this._passNum}</div>
+          <div class="hud-readout"><div class="hud-rec"><span id="hud-rec-dot">●</span> ${t('REC')}  <span id="hud-timestamp">2026-01-01 00:00:00Z</span></div></div>
+          <div class="hud-readout"><div class="hud-orbital">ORB: ${this._orbitNum}  PASS: DESC-${this._passNum}</div></div>
         </div>
         <div class="hud-bracket">┐</div>
       </div>
@@ -311,33 +311,33 @@ export class IntelHUD {
       <div class="hud-corner hud-bottom-left">
         <div class="hud-bracket">└</div>
         <div class="hud-content">
-          <div id="hud-mgrs">MGRS: ---</div>
-          <div id="hud-latlon">--°--'--"N ---°--'--"W</div>
+          <div class="hud-readout"><div id="hud-mgrs">MGRS: ---</div></div>
+          <div class="hud-readout"><div id="hud-latlon">--°--'--"N ---°--'--"W</div></div>
         </div>
       </div>
 
       <div class="hud-corner hud-bottom-right">
         <div class="hud-content" style="text-align:right">
-          <div id="hud-gsd">GSD: --m  NIIRS: --</div>
-          <div id="hud-alt">ALT: --m   SUN: --° EL</div>
-          <div id="hud-ais-vessel" class="hud-ais-vessel">${t('AIS: --')}</div>
+          <div class="hud-readout"><div id="hud-gsd">GSD: --m  NIIRS: --</div></div>
+          <div class="hud-readout"><div id="hud-alt">ALT: --m   SUN: --° EL</div></div>
+          <div class="hud-readout"><div id="hud-ais-vessel" class="hud-ais-vessel">${t('AIS: --')}</div></div>
         </div>
         <div class="hud-bracket">┘</div>
       </div>
 
       <div class="hud-edge hud-left-edge">
-        <div id="hud-coll">COLL: --:--:--Z</div>
-        <div id="hud-ona">ONA: --°</div>
+        <div class="hud-readout"><div id="hud-coll">COLL: --:--:--Z</div></div>
+        <div class="hud-readout"><div id="hud-ona">ONA: --°</div></div>
       </div>
 
       <div class="hud-edge hud-right-edge">
-        <div>BAND: PAN</div>
-        <div>BITS: 11</div>
-        <div>LVL: 1A</div>
+        <div class="hud-readout"><div>BAND: PAN</div></div>
+        <div class="hud-readout"><div>BITS: 11</div></div>
+        <div class="hud-readout"><div>LVL: 1A</div></div>
       </div>
 
       <div class="hud-bottom-bar">
-        <span id="hud-bottom-line">LAT: --  LON: --  MGRS: ---</span>
+        <span class="hud-readout"><span id="hud-bottom-line">LAT: --  LON: --  MGRS: ---</span></span>
       </div>
     `;
     this._el.dataset.variant = this._variant;
diff --git a/src/reasonableDefaults.test.mjs b/src/reasonableDefaults.test.mjs
index dfd951377..766079aa4 100644
--- a/src/reasonableDefaults.test.mjs
+++ b/src/reasonableDefaults.test.mjs
@@ -11,9 +11,8 @@ import { expandApplicationHtml } from '../build/application-html.js';
 //      actually decides fresh-boot layer state — including the early return that
 //      makes each layer's own initializer the operative default.
 //   2. Scope feather. Owner: "I like to hide feather" set it to 0% on
-//      2026-08-22; the owner revised that to 8% on 2026-08-23 and locked 11%
-//      on 2026-08-24, a soft
-//      edge. The hard crop is still one drag away, and that is pinned too.
+//      2026-08-22; later revisions were 8%, then 11%, then 100% on
+//      2026-10-25. Scope stays ON on a fresh boot. The hard crop remains available.
 //   3. Detection ON (Dense @ 75%) for EVERY style, Normal included.
 //      Owner: "detect should also be on by default."
 //   4. Detection OUTSIDE opacity 1% (owner final lock, 2026-08-24; 3% on 08-23, 5% before), with
@@ -38,6 +37,7 @@ import { AIRCRAFT_BRACKET_FLOOR_ANCHOR } from './data/detectionPolicy.js';
 import {
   SCOPE_FEATHER_RATIO_DEFAULT,
   getScopeMaskFeather,
+  isScopeMaskEnabled,
   scopeMaskGeometry,
   setScopeMaskFeather,
 } from './scopeMask.js';
@@ -75,32 +75,40 @@ function managerForHash(hash) {
 }
 
 // ---------------------------------------------------------------------------
-// 2. Scope feather — a subtle soft edge on a first run
+// 2. Scope ON with 100% feather on a first run
 // ---------------------------------------------------------------------------
 
-test('first run opens with a subtle scope feather, at every surface that decides it', () => {
-  assert.equal(SCOPE_FEATHER_RATIO_DEFAULT, 0.11,
-    'owner final lock 2026-08-24, superseding the 08-22 hard-crop and 08-23 8% rulings');
-  assert.equal(getScopeMaskFeather(), 0.11,
+test('first run opens with Scope ON and 100% feather at every default surface', () => {
+  assert.equal(isScopeMaskEnabled(), true, 'the live mask starts enabled');
+  assert.equal(SCOPE_FEATHER_RATIO_DEFAULT, 1, 'owner preference 2026-10-25');
+  assert.equal(getScopeMaskFeather(), 1,
     'and the live module starts there, not merely documents it');
 
   // The slider and its readout are the same default rendered as markup — a
   // fresh boot applies no restore, so a stale value here would show one number
   // over a mask drawn at another.
-  assert.match(indexHtml, /id="scope-feather-slider"[^>]*\svalue="11"/,
-    'index.html: the feather slider ships at 11');
-  assert.match(indexHtml, /id="scope-feather-value"[^>]*>11%</,
+  assert.match(indexHtml, /id="scope-feather-slider"[^>]*\svalue="100"/,
+    'index.html: the feather slider ships at 100');
+  assert.match(indexHtml, /id="scope-feather-value"[^>]*>100%</,
     'index.html: and its readout agrees with the handle');
 
+  assert.match(indexHtml, /<input type="checkbox" id="scope-toggle"[^>]*\schecked\s*\/>/,
+    'the native Scope checkbox starts checked');
+
   // The link this session generates must describe the mask this session draws,
   // for the window before the first _syncShareState.
-  assert.match(shareSource, /this\._scopeFeatherPct = 11;/,
+  assert.match(shareSource, /this\._scopeFeatherPct = 100;/,
     'sharelink.js: the generator starts from the same value the mask starts at');
+  const params = managerForHash('')._buildHashParams();
+  assert.equal(params.get('sc'), '1');
+  assert.equal(params.get('scf'), '100');
 });
 
-test('an explicit feather still wins over the subtle default', () => {
+test('an explicit feather still wins over the 100% default', () => {
   // A link is authored state. The new default governs a session that said
   // nothing; it must never overwrite one that said something.
+  assert.equal(managerForHash('#lat=10&lon=20&scf=11').parseInitialHash().scopeFeatherPct, 11,
+    'links carrying the previous default preserve their authored feather');
   assert.equal(managerForHash('#lat=10&lon=20&scf=35').parseInitialHash().scopeFeatherPct, 35);
   assert.equal(managerForHash('#lat=10&lon=20&scf=64').parseInitialHash().scopeFeatherPct, 64);
   assert.equal(managerForHash('#lat=10&lon=20&scf=0').parseInitialHash().scopeFeatherPct, 0,
@@ -113,23 +121,28 @@ test('an explicit feather still wins over the subtle default', () => {
     'a pre-scf link restores the author\'s view, not the new default');
 });
 
-test('the subtle default did not weaken the feather control, and 0 is still reachable', () => {
+test('share links preserve explicit Scope OFF and feather choices over the defaults', () => {
+  const shared = managerForHash('#lat=10&lon=20&sc=0&scf=11').parseInitialHash();
+  assert.equal(shared.scopeEnabled, false);
+  assert.equal(shared.scopeFeatherPct, 11);
+});
+
+test('the 100% default retains the expanded feather range and hard edge', () => {
   // The cheap way to move a default would be to nerf the control. Prove the
   // slider still spans its full range and the geometry is still DERIVED from
   // the ratio — a check that would pass vacuously if it only ever saw one value.
-  assert.match(indexHtml, /id="scope-feather-slider"[^>]*\smin="0"[^>]*\smax="100"/,
+  assert.match(indexHtml, /id="scope-feather-slider"[^>]*\smin="0"[^>]*\smax="200"/,
     'the slider still offers the whole range');
   const previous = getScopeMaskFeather();
   try {
-    for (const ratio of [0.35, 0.7, 1]) {
+    for (const ratio of [0.35, 0.7, 1, 1.75, 2]) {
       setScopeMaskFeather(ratio);
       const geo = scopeMaskGeometry(1200, 900);
       const keyholeR = 900 * 0.5 * KEYHOLE_OUTER_RADIUS;
       assert.ok(Math.abs((geo.outerR - geo.innerR) - keyholeR * ratio) < 1e-9,
         `feather ${ratio} must still widen the band to that fraction of the keyhole`);
     }
-    // The new default is a real, narrow band — not the hard crop, and nowhere
-    // near the retired 35 % halo.
+    // The first-run value draws a band derived from the same keyhole radius.
     setScopeMaskFeather(SCOPE_FEATHER_RATIO_DEFAULT);
     const soft = scopeMaskGeometry(1200, 900);
     const keyholeR = 900 * 0.5 * KEYHOLE_OUTER_RADIUS;
diff --git a/src/scopeMask.js b/src/scopeMask.js
index 775a257f7..c43108377 100644
--- a/src/scopeMask.js
+++ b/src/scopeMask.js
@@ -1,4 +1,5 @@
 import { getKeyholeGeometry } from './celestialRing.js';
+import { SCOPE_FEATHER_RATIO_MAX } from './scopeMaskPolicy.js';
 
 /**
  * Scope mask — the app's signature circular viewport treatment, made real.
@@ -41,25 +42,10 @@ import { getKeyholeGeometry } from './celestialRing.js';
 /** Matches the page background the emergent scope faded into. */
 const SCOPE_OUTSIDE_COLOR = { r: 5, g: 5, b: 8 };
 /**
- * Default edge feather as a fraction of the keyhole radius.
- *
- * 0.11 since 2026-08-24 (owner final lock; 0.08 on 08-23, hard-crop 0 on
- * 08-22 — this supersedes both), REVISING the 2026-08-22 ruling that
- * set it to zero: a subtle soft edge rather than either the hard crop or the
- * retired 35 % halo. The slider is untouched and still spans 0..100; this is
- * only where it STARTS. `setScopeMaskFeather` is unchanged, so any feather a
- * share link carries, or the operator dials in, overrides this immediately, and
- * the hard-crop path at 0 is still reachable from the handle.
- *
- * Keep in lockstep with `#scope-feather-slider`'s markup value AND readout in
- * index.html and `_scopeFeatherPct` in sharelink.js — a fresh boot applies no
- * restore, so those literals ARE the first-run state. NOT the `scf` PARSE
- * fallback, which stays at 35 on purpose: a link predating that field was
- * authored when 35 was what its author saw, and a link from the feather-0 era
- * carries `scf=0` explicitly because the generator always writes the field.
- * Pinned in reasonableDefaults.test.mjs.
+ * First-run feather ratio; the Display slider and share defaults use 100%.
+ * The historical missing-scf parse fallback remains 35%.
  */
-export const SCOPE_FEATHER_RATIO_DEFAULT = 0.11;
+export const SCOPE_FEATHER_RATIO_DEFAULT = 1;
 /**
  * Terminus opacity at/above SCOPE_TERMINUS_FAR_M — slightly translucent so
  * faint stars survive in the corners at globe scale.
@@ -344,7 +330,10 @@ function teardownDevicePixelRatioWatch() {
 export function scopeMaskGeometry(width, height, featherRatio = _featherRatio) {
   const keyhole = getKeyholeGeometry(width, height);
   if (!(keyhole.radius > 0)) return null;
-  const feather = Math.max(0, Math.min(1, Number(featherRatio) || 0));
+  const feather = Math.max(
+    0,
+    Math.min(SCOPE_FEATHER_RATIO_MAX, Number(featherRatio) || 0),
+  );
   // Feather straddles the keyhole edge so the visible radius stays anchored
   // to the shared geometry every keyhole consumer (labels, cards) fades on.
   const half = keyhole.radius * feather * 0.5;
@@ -423,6 +412,14 @@ function draw() {
   _painted = true;
 }
 
+/** Expose only the OFF state; an absent attribute preserves the original HUD. */
+function syncScopeMaskAppearance(enabled = _enabled) {
+  const dataset = globalThis.document?.documentElement?.dataset;
+  if (!dataset) return;
+  if (enabled) delete dataset.scopeMask;
+  else dataset.scopeMask = 'off';
+}
+
 /**
  * Install the scope mask into the viewer container. Idempotent.
  * @param {Cesium.Viewer} viewer
@@ -430,6 +427,7 @@ function draw() {
  */
 export function installScopeMask(viewer) {
   if (_canvas || !viewer?.container) return;
+  syncScopeMaskAppearance();
   _container = viewer.container;
   _viewer = viewer;
   _canvas = document.createElement('canvas');
@@ -505,6 +503,7 @@ export function setScopeMaskEnabled(enabled) {
   const next = Boolean(enabled);
   const reEnabled = next && !_enabled;
   _enabled = next;
+  syncScopeMaskAppearance();
   if (reEnabled) {
     // The camera moved freely while the scope was off and nothing sampled it,
     // so the painted terminus can be a whole altitude band stale. Re-sync once
@@ -522,11 +521,14 @@ export function isScopeMaskEnabled() {
 }
 
 /**
- * @param {number} ratio - Edge feather as a fraction of keyhole radius [0,1].
+ * @param {number} ratio - Edge feather as a fraction of keyhole radius [0,2].
  * @returns {void}
  */
 export function setScopeMaskFeather(ratio) {
-  _featherRatio = Math.max(0, Math.min(1, Number(ratio) || 0));
+  _featherRatio = Math.max(
+    0,
+    Math.min(SCOPE_FEATHER_RATIO_MAX, Number(ratio) || 0),
+  );
   draw();
 }
 
@@ -540,6 +542,7 @@ export function getScopeMaskFeather() {
  * @returns {void}
  */
 export function destroyScopeMask() {
+  syncScopeMaskAppearance(true);
   _resizeObserver?.disconnect();
   _resizeObserver = null;
   teardownDevicePixelRatioWatch();
@@ -553,6 +556,7 @@ export function destroyScopeMask() {
 
 /** Test seam. */
 export function _resetScopeMaskForTest() {
+  syncScopeMaskAppearance(true);
   _resizeObserver?.disconnect();
   _resizeObserver = null;
   teardownDevicePixelRatioWatch();
diff --git a/src/scopeMask.test.mjs b/src/scopeMask.test.mjs
index 7f5dcba62..d37b6b23b 100644
--- a/src/scopeMask.test.mjs
+++ b/src/scopeMask.test.mjs
@@ -18,6 +18,7 @@ import {
   SCOPE_TERMINUS_MIN_PCT,
   SCOPE_TERMINUS_MAX_PCT,
   SCOPE_FEATHER_RATIO_DEFAULT,
+  getScopeMaskFeather,
   SCOPE_OUTSIDE_ALPHA,
   SCOPE_TERMINUS_ALPHA_NEAR,
   SCOPE_TERMINUS_FAR_M,
@@ -26,6 +27,7 @@ import {
   _resetScopeMaskForTest,
 } from './scopeMask.js';
 import { KEYHOLE_OUTER_RADIUS } from './celestialRing.js';
+import { SCOPE_FEATHER_RATIO_MAX, clampScopeFeatherPct } from './scopeMaskPolicy.js';
 
 beforeEach(() => _resetScopeMaskForTest());
 
@@ -47,16 +49,34 @@ test('zero feather produces a hard edge exactly at the keyhole radius', () => {
   assert.equal(geo.outerR, keyholeR);
 });
 
-test('feather ratio is clamped to [0,1] and bad input falls back to 0', () => {
+test('feather ratio reaches the center at 200% and clamps larger input', () => {
   const wide = scopeMaskGeometry(1000, 800, 7);
-  const one = scopeMaskGeometry(1000, 800, 1);
-  assert.equal(wide.innerR, one.innerR);
-  assert.equal(wide.outerR, one.outerR);
+  const maximum = scopeMaskGeometry(1000, 800, SCOPE_FEATHER_RATIO_MAX);
+  const keyholeR = 800 * 0.5 * KEYHOLE_OUTER_RADIUS;
+  assert.equal(maximum.innerR, 0);
+  assert.equal(maximum.outerR, keyholeR * 2);
+  assert.equal(wide.innerR, maximum.innerR);
+  assert.equal(wide.outerR, maximum.outerR);
+  for (const ratio of [1, 1.5, 2]) {
+    setScopeMaskFeather(ratio);
+    assert.equal(getScopeMaskFeather(), ratio);
+    const geometry = scopeMaskGeometry(1000, 800);
+    assert.equal((geometry.innerR + geometry.outerR) / 2, keyholeR);
+    assert.equal(geometry.outerR - geometry.innerR, keyholeR * ratio);
+  }
+  setScopeMaskFeather(7);
+  assert.equal(getScopeMaskFeather(), SCOPE_FEATHER_RATIO_MAX);
   const nan = scopeMaskGeometry(1000, 800, Number.NaN);
   const zero = scopeMaskGeometry(1000, 800, 0);
   assert.equal(nan.innerR, zero.innerR);
 });
 
+test('UI and share feather percentages share one bounded integer range', () => {
+  for (const [value, expected] of [[0, 0], [11, 11], [175.6, 176], [200, 200], [350, 200], [-4, 0], [Number.NaN, 0]]) {
+    assert.equal(clampScopeFeatherPct(value), expected);
+  }
+});
+
 test('degenerate viewport yields null instead of a broken gradient', () => {
   assert.equal(scopeMaskGeometry(0, 0), null);
   assert.equal(scopeMaskGeometry(-5, 100), null);
@@ -136,12 +156,14 @@ function stubScopeMaskDom({ width = 1000, height = 800, dpr = 1 } = {}) {
       removeEventListener: (type, fn) => listeners.delete(fn),
     }),
   };
-  globalThis.document = { createElement: () => canvas };
+  const documentElement = { dataset: {} };
+  globalThis.document = { documentElement, createElement: () => canvas };
   globalThis.ResizeObserver = class { observe() {} disconnect() {} };
   const container = { clientWidth: width, clientHeight: height, appendChild() {} };
   return {
     canvas,
     container,
+    documentElement,
     /** Canvas work counters: backing-store resizes, clears, fills. */
     ops,
     /** Every fillStyle string assigned since install (hard-crop path). */
@@ -160,6 +182,29 @@ function stubScopeMaskDom({ width = 1000, height = 800, dpr = 1 } = {}) {
   };
 }
 
+test('scope appearance follows direct state changes and install/destroy lifecycles', () => {
+  const dom = stubScopeMaskDom();
+  try {
+    setScopeMaskEnabled(false);
+    assert.equal(dom.documentElement.dataset.scopeMask, 'off');
+    delete dom.documentElement.dataset.scopeMask;
+    installScopeMask({ container: dom.container });
+    assert.equal(dom.documentElement.dataset.scopeMask, 'off', 'install publishes retained OFF state');
+    destroyScopeMask();
+    assert.equal(dom.documentElement.dataset.scopeMask, undefined, 'destroy clears the document marker');
+    installScopeMask({ container: dom.container });
+    assert.equal(dom.documentElement.dataset.scopeMask, 'off', 'reinstall retains the preference');
+    setScopeMaskEnabled(true);
+    assert.equal(dom.documentElement.dataset.scopeMask, undefined, 'ON uses the original presentation');
+    setScopeMaskEnabled(false);
+    _resetScopeMaskForTest();
+    assert.equal(dom.documentElement.dataset.scopeMask, undefined, 'test reset clears the marker');
+  } finally {
+    destroyScopeMask();
+    dom.restore();
+  }
+});
+
 test('a DPR change with no resize still repaints the backing store', () => {
   const dom = stubScopeMaskDom({ width: 1000, height: 800, dpr: 1 });
   try {
diff --git a/src/scopeMaskPolicy.js b/src/scopeMaskPolicy.js
new file mode 100644
index 000000000..13515fb43
--- /dev/null
+++ b/src/scopeMaskPolicy.js
@@ -0,0 +1,11 @@
+/** A 200% feather reaches the center while keeping its midpoint on the keyhole. */
+export const SCOPE_FEATHER_RATIO_MAX = 2;
+const SCOPE_FEATHER_MAX_PCT = SCOPE_FEATHER_RATIO_MAX * 100;
+
+/** Normalize a UI/share-link feather percentage to the supported integer range. */
+export function clampScopeFeatherPct(value) {
+  return Math.max(
+    0,
+    Math.min(SCOPE_FEATHER_MAX_PCT, Math.round(Number(value) || 0)),
+  );
+}
diff --git a/src/sharelink.celestial.test.mjs b/src/sharelink.celestial.test.mjs
index 230843584..746d5b3bc 100644
--- a/src/sharelink.celestial.test.mjs
+++ b/src/sharelink.celestial.test.mjs
@@ -99,6 +99,22 @@ test('Nepal locator token is valid in v2 share links', () => {
   assert.equal(parsed.layerStateInvalid, false);
 });
 
+test('scope feather above 100% survives share parsing and serialization', () => {
+  const manager = makeManager('#v=2&lat=10&lon=20&sc=0&scf=200');
+  const parsed = manager.parseInitialHash();
+  assert.equal(parsed.scopeEnabled, false);
+  assert.equal(parsed.scopeFeatherPct, 200);
+  assert.equal(makeManager('#lat=10&lon=20&scf=175').parseInitialHash().scopeFeatherPct, 175);
+  assert.equal(makeManager('#lat=10&lon=20&scf=999').parseInitialHash().scopeFeatherPct, 200);
+  manager.onToggleChange(false, true, { scopeEnabled: false, scopeFeatherPct: 200 });
+  const params = manager._buildHashParams();
+  assert.equal(params.get('sc'), '0');
+  assert.equal(params.get('scf'), '200');
+  manager.onToggleChange(false, true, { scopeFeatherPct: 999 });
+  assert.equal(manager._buildHashParams().get('scf'), '200');
+  clearTimeout(manager._debounceTimer);
+});
+
 test('share-link serialization emits the current celestial state', () => {
   const manager = makeManager();
   manager.onToggleChange(false, false, { celestialRingEnabled: false });
@@ -498,8 +514,8 @@ test('every explicit visual UI gesture claims restore authority before it mutate
     ['cycleDetection: () => {', 'toggleCctv: () =>', 'cycleDetectionMode()', 'detection hotkey'],
     ['toggleBloom:', 'setBloomIntensity:', 'this._setBloomEnabled(', 'toggleBloom control'],
     ['setBloomIntensity:', 'toggleSharpen:', 'this._setBloomIntensity(', 'setBloomIntensity control'],
-    ['toggleSharpen:', 'toggleScope:', 'this._setSharpenEnabled(', 'toggleSharpen control'],
-    ['toggleScope:', 'setScopeFeather:', 'setScopeMaskEnabled(', 'toggleScope control'],
+    ['toggleSharpen:', 'setScopeEnabled:', 'this._setSharpenEnabled(', 'toggleSharpen control'],
+    ['setScopeEnabled:', 'setScopeFeather:', 'setScopeMaskEnabled(', 'setScopeEnabled control'],
     ['setScopeFeather:', 'setSharpenIntensity:', 'setScopeMaskFeather(', 'setScopeFeather control'],
     ['setSharpenIntensity:', 'setHudLayout:', 'this._applySharpenIntensity(', 'setSharpenIntensity control'],
     ['setHudLayout:', 'toggleCleanView:', 'this._setHudVariant(', 'setHudLayout control'],
diff --git a/src/sharelink.js b/src/sharelink.js
index 7e0e78b35..c184a59f5 100644
--- a/src/sharelink.js
+++ b/src/sharelink.js
@@ -5,6 +5,7 @@ import {
   normalizeAllocationStrategy,
 } from './data/detectionPolicy.js';
 import { clampScopeTerminusPct } from './scopeMask.js';
+import { clampScopeFeatherPct } from './scopeMaskPolicy.js';
 import {
   decodeLayerStateParams,
   encodeLayerStateParams,
@@ -112,10 +113,7 @@ export class ShareLinkManager {
     this._detectionOutsideOpacityPct = 1;
     this._celestialRingEnabled = false;
     this._scopeEnabled = true;
-    // Feather opens on a soft 11% scope-mask edge (owner final lock 2026-08-24,
-    // superseding the 08-22 hard-crop and 08-23 8% rulings) — mirrors
-    // SCOPE_FEATHER_RATIO_DEFAULT in scopeMask.js and the slider's markup value.
-    this._scopeFeatherPct = 11;
+    this._scopeFeatherPct = 100;
     // null = the altitude-adaptive terminus (the default). A number pins the
     // outside-fill opacity as a percent, 94..100. (`sce`, 2026-08-17)
     this._scopeTerminusPct = null;
@@ -227,10 +225,7 @@ export class ShareLinkManager {
       // (`_scopeFeatherPct` in the constructor tracks the default: that one
       // mirrors live state for the link this session generates, so it must match
       // the mask, not the archive.)
-      scopeFeatherPct: Math.max(
-        0,
-        Math.min(100, Math.round(parseOr(params.get('scf'), 35))),
-      ),
+      scopeFeatherPct: clampScopeFeatherPct(parseOr(params.get('scf'), 35)),
       // Absent (or non-numeric) `sce` = adaptive (null), the default behavior;
       // a value pins the terminus opacity percent, clamped into the SUPPORTED
       // 94..100 band. `sce=0` used to survive as a sub-94 terminus — a hole in
@@ -494,10 +489,7 @@ export class ShareLinkManager {
     if (typeof extras.scopeEnabled === 'boolean')
       this._scopeEnabled = extras.scopeEnabled;
     if (typeof extras.scopeFeatherPct === 'number') {
-      this._scopeFeatherPct = Math.max(
-        0,
-        Math.min(100, Math.round(extras.scopeFeatherPct)),
-      );
+      this._scopeFeatherPct = clampScopeFeatherPct(extras.scopeFeatherPct);
     }
     if (extras.scopeTerminusPct === null) this._scopeTerminusPct = null;
     else if (typeof extras.scopeTerminusPct === 'number') {
diff --git a/src/ui/aircraftDisplay.js b/src/ui/aircraftDisplay.js
index ba325f6e9..6e14e0adf 100644
--- a/src/ui/aircraftDisplay.js
+++ b/src/ui/aircraftDisplay.js
@@ -70,7 +70,6 @@ export class AircraftDisplay {
     // a screen reader without this. It matters more now that the button ships
     // ACTIVE from markup (default-on, 2026-08-22): the very first thing assistive
     // tech reported was an unpressed-looking control over an armed layer.
-    // Mirrors #scope-toggle, which has always carried aria-pressed.
     this._models3dBtn?.setAttribute(
       'aria-pressed',
       String(this._models3dEnabled),
diff --git a/src/ui/cyberTheme.test.mjs b/src/ui/cyberTheme.test.mjs
index 68710a36a..03ee75f08 100644
--- a/src/ui/cyberTheme.test.mjs
+++ b/src/ui/cyberTheme.test.mjs
@@ -1,3 +1,4 @@
+import { getScopeMaskFeather, isScopeMaskEnabled, setScopeMaskEnabled, setScopeMaskFeather } from '../scopeMask.js';
 import assert from 'node:assert/strict';
 import { readFileSync } from 'node:fs';
 import test from 'node:test';
@@ -271,6 +272,35 @@ test('Display and voice HUD routes preserve explicit Cyber entry and exit author
   assert.equal(voice.owner.activeStyle, 'snow');
 });
 
+test('scope choice and expanded feather survive every HUD layout and both restore paths', async (t) => {
+  const { owner } = styleOwner(t, 'tactical');
+  const previous = { enabled: isScopeMaskEnabled(), feather: getScopeMaskFeather() };
+  t.after(() => { setScopeMaskEnabled(previous.enabled); setScopeMaskFeather(previous.feather); });
+  Object.assign(owner.services, { setScopeMaskEnabled, setScopeMaskFeather });
+  owner._scopeBtn = { checked: true };
+  owner._scopeFeatherSlider = { value: '11', disabled: false };
+  owner._scopeFeatherValue = {};
+  await owner.restoreShareState({ scopeEnabled: false, scopeFeatherPct: 200 });
+  assert.equal(owner._scopeBtn.checked, false);
+  assert.equal(owner._scopeFeatherSlider.disabled, true);
+  assert.equal(owner._scopeFeatherSlider.value, '200');
+  for (const layout of ['minimal', 'operator', 'cyber', 'tactical']) {
+    owner._setHudVariant(layout, { applyVisualDefaults: true });
+    assert.equal(isScopeMaskEnabled(), false, layout);
+    assert.equal(getScopeMaskFeather(), 2, layout);
+    assert.equal(owner._scopeBtn.checked, false, layout);
+  }
+  await owner.applyVisualState({ scope: { enabled: true, featherPct: 175 } });
+  assert.equal(isScopeMaskEnabled(), true);
+  assert.equal(getScopeMaskFeather(), 1.75);
+  assert.equal(owner._scopeBtn.checked, true);
+  assert.equal(owner._scopeFeatherSlider.disabled, false);
+  assert.equal(owner._scopeFeatherValue.textContent, '175%');
+  await owner.applyVisualState({ scope: { featherPct: 500 } });
+  assert.equal(getScopeMaskFeather(), 2);
+  assert.equal(owner._scopeFeatherSlider.value, '200');
+});
+
 test('scene and share HUD transitions do not restore a local pre-Cyber preset', async (t) => {
   const { owner, hud } = styleOwner(t, 'tactical');
   owner.setStyle('noir');
diff --git a/src/ui/displayBindings.js b/src/ui/displayBindings.js
index 329681798..3ae874c3c 100644
--- a/src/ui/displayBindings.js
+++ b/src/ui/displayBindings.js
@@ -1,6 +1,7 @@
+import { clampScopeFeatherPct } from '../scopeMaskPolicy.js';
 import { createFrameRateMonitor } from './frameRateMonitor.js';
 import { bindApplicationShortcuts } from './visualInput.js';
-import { bindDisplayControls } from './displayControls.js';
+import { bindDisplayControls, syncScopeControls } from './displayControls.js';
 import { canonicalizeDensity } from '../data/detectionPolicy.js';
 
 /** Own keyboard/display event subscriptions; settings remain with their state owners. */
@@ -92,6 +93,11 @@ export class DisplayBindings {
       },
     });
 
+    syncScopeControls(
+      this._scopeBtn,
+      this._scopeFeatherSlider,
+      isScopeMaskEnabled(),
+    );
     this._displayControls?.destroy();
     this._displayControls = bindDisplayControls({
       elements: {
@@ -100,7 +106,7 @@ export class DisplayBindings {
         bloomSlider: this._bloomSlider,
         sharpenButton: this._sharpenBtn,
         sharpenSlider: this._sharpenSlider,
-        scopeButton: this._scopeBtn,
+        scopeToggle: this._scopeBtn,
         scopeFeatherSlider: this._scopeFeatherSlider,
         hudLayout: this._hudLayoutSelect,
         hudButton: this._hudBtn,
@@ -134,17 +140,15 @@ export class DisplayBindings {
           this.shareLinkManager?.claimRestoreLane?.('visual');
           this._setSharpenEnabled(!this.sharpenEnabled);
         },
-        toggleScope: () => {
+        setScopeEnabled: (enabled) => {
           this.shareLinkManager?.claimRestoreLane?.('visual');
-          const next = !isScopeMaskEnabled();
-          setScopeMaskEnabled(next);
-          this._scopeBtn.classList.toggle('active', next);
-          this._scopeBtn.setAttribute('aria-pressed', String(next));
+          setScopeMaskEnabled(enabled);
+          syncScopeControls(this._scopeBtn, this._scopeFeatherSlider, enabled);
           this._syncShareState();
         },
         setScopeFeather: (value) => {
           this.shareLinkManager?.claimRestoreLane?.('visual');
-          const pct = Math.max(0, Math.min(100, value || 0));
+          const pct = clampScopeFeatherPct(value);
           if (this._scopeFeatherValue)
             this._scopeFeatherValue.textContent = `${pct}%`;
           setScopeMaskFeather(pct / 100);
diff --git a/src/ui/displayControls.js b/src/ui/displayControls.js
index e0d76d338..ceab61d91 100644
--- a/src/ui/displayControls.js
+++ b/src/ui/displayControls.js
@@ -18,7 +18,6 @@ export function bindDisplayControls({ elements, actions }) {
   for (const [name, action] of [
     ['bloomButton', 'toggleBloom'],
     ['sharpenButton', 'toggleSharpen'],
-    ['scopeButton', 'toggleScope'],
     ['cleanViewButton', 'toggleCleanView'],
     ['cleanViewExitButton', 'exitCleanView'],
     ['celestialButton', 'toggleCelestial'],
@@ -34,6 +33,7 @@ export function bindDisplayControls({ elements, actions }) {
     ['scopeFeatherSlider', 'setScopeFeather'],
   ])
     listen(elements[name], 'input', action, integer);
+  listen(elements.scopeToggle, 'change', 'setScopeEnabled', (el) => el.checked);
   listen(elements.densitySlider, 'input', 'setDensity', (el) => el.value);
   listen(elements.hudLayout, 'change', 'setHudLayout', (el) => el.value);
   for (const [name, action] of [
@@ -72,3 +72,9 @@ export function bindDisplayControls({ elements, actions }) {
     },
   };
 }
+
+/** Keep the native Scope checkbox and feather availability in step with the mask. */
+export function syncScopeControls(toggle, featherSlider, enabled) {
+  if (toggle) toggle.checked = enabled;
+  if (featherSlider) featherSlider.disabled = !enabled;
+}
diff --git a/src/ui/displayControls.test.mjs b/src/ui/displayControls.test.mjs
index 705a9f775..f7c5bcafb 100644
--- a/src/ui/displayControls.test.mjs
+++ b/src/ui/displayControls.test.mjs
@@ -158,3 +158,29 @@ test('optional controls are absent safely and subscriptions stay instance-owned'
   assert.deepEqual(calls, ['b']);
   two.destroy();
 });
+
+test('the native Scope checkbox reads checked state on change and disposes its listener', () => {
+  const scopeToggle = element();
+  scopeToggle.checked = true;
+  const scopeFeatherSlider = element('200');
+  const calls = [];
+  const controls = bindDisplayControls({
+    elements: { scopeToggle, scopeFeatherSlider },
+    actions: {
+      setScopeEnabled: (value) => calls.push(['enabled', value]),
+      setScopeFeather: (value) => calls.push(['feather', value]),
+    },
+  });
+  scopeToggle.checked = false;
+  scopeToggle.dispatchEvent(new Event('change'));
+  scopeToggle.checked = true;
+  scopeToggle.dispatchEvent(new Event('change'));
+  scopeFeatherSlider.dispatchEvent(new Event('input'));
+  controls.destroy();
+  scopeToggle.dispatchEvent(new Event('change'));
+  assert.deepEqual(calls, [
+    ['enabled', false],
+    ['enabled', true],
+    ['feather', 200],
+  ]);
+});
diff --git a/src/ui/frameRateMonitor.js b/src/ui/frameRateMonitor.js
index 3bad73a20..2f6ab8e8d 100644
--- a/src/ui/frameRateMonitor.js
+++ b/src/ui/frameRateMonitor.js
@@ -6,7 +6,7 @@ export function createFrameRateMonitor({ viewer, documentRef = document }) {
   if (!host || !frameEvent) return { destroy() {} };
 
   const readout = documentRef.createElement('div');
-  readout.className = 'frame-rate-readout';
+  readout.className = 'frame-rate-readout scene-text-holdout';
   readout.hidden = true;
   // i18n-ignore: FPS is a unit code, the same in every language
   readout.textContent = 'FPS —';
diff --git a/src/ui/styles/command-dock-trays.css b/src/ui/styles/command-dock-trays.css
index eef3c6001..547037de7 100644
--- a/src/ui/styles/command-dock-trays.css
+++ b/src/ui/styles/command-dock-trays.css
@@ -478,6 +478,12 @@ body:not(.ui-clean-view):not(.recording-mode):has(
   bottom: calc(2vh + 5.4rem);
 }
 
+:root[data-scope-mask='off']
+  #intel-hud[data-variant='minimal']
+  .hud-bottom-left {
+  bottom: calc(2vh + 6.5rem);
+}
+
 #intel-hud[data-variant='minimal'] .hud-bottom-bar {
   bottom: calc(2vh + 9rem);
 }
diff --git a/src/ui/styles/controls.css b/src/ui/styles/controls.css
index f11378bb9..59f275109 100644
--- a/src/ui/styles/controls.css
+++ b/src/ui/styles/controls.css
@@ -501,6 +501,27 @@ html:not([lang='en']) .panel-collapse-btn {
   color: var(--accent);
 }
 
+.pp-scope-toggle input {
+  width: 14px;
+  height: 14px;
+  margin: 0 0 0 auto;
+  accent-color: var(--accent);
+  cursor: pointer;
+}
+
+.pp-scope-toggle:has(input:checked) .pp-label {
+  color: var(--accent);
+}
+
+.pp-scope-toggle:has(input:focus-visible) {
+  outline: 1px solid var(--accent);
+  outline-offset: 2px;
+}
+
+#scope-slider-row:has(input:disabled) {
+  opacity: 0.45;
+}
+
 /* ── Bloom Slider (inline with toggle) ───────── */
 .pp-toggle-group {
   display: flex;
diff --git a/src/ui/styles/overlays.css b/src/ui/styles/overlays.css
index 227d2d6d0..7f491439b 100644
--- a/src/ui/styles/overlays.css
+++ b/src/ui/styles/overlays.css
@@ -371,3 +371,134 @@
 #intel-hud[data-variant='minimal'] .hud-summary-wrap {
   max-width: 280px;
 }
+
+/* Scope OFF adds text-sized backing; Scope ON retains the original HUD. */
+.hud-readout {
+  display: contents;
+}
+
+:root[data-scope-mask='off']
+  #intel-hud:is(
+    [data-variant='minimal'],
+    [data-variant='operator'],
+    [data-variant='tactical']
+  )
+  .hud-readout,
+:root[data-scope-mask='off']:not([data-ui-theme='cyber']) .scene-text-holdout {
+  background: rgba(0, 0, 0, 0.7);
+  box-shadow: none;
+  border-radius: 2px;
+  padding-block: 0;
+  padding-inline: 6px;
+  margin-block: 0;
+  margin-inline: -6px;
+  width: fit-content;
+  max-width: 100%;
+  box-sizing: content-box;
+  white-space: nowrap;
+}
+
+:root[data-scope-mask='off']
+  #intel-hud:is(
+    [data-variant='minimal'],
+    [data-variant='operator'],
+    [data-variant='tactical']
+  )
+  .hud-readout {
+  display: block;
+  width: max-content;
+  min-width: 0;
+  box-sizing: content-box;
+  white-space: nowrap;
+}
+
+:root[data-scope-mask='off']
+  #intel-hud:is(
+    [data-variant='minimal'],
+    [data-variant='operator'],
+    [data-variant='tactical']
+  )
+  :is(.hud-top-right, .hud-bottom-right)
+  .hud-readout,
+:root[data-scope-mask='off']:not([data-ui-theme='cyber'])
+  #style-indicator
+  .scene-text-holdout {
+  margin-inline-start: auto;
+}
+
+/* Preserve glyph opacity without dimming the vertical backplates. */
+:root[data-scope-mask='off']
+  #intel-hud:is([data-variant='operator'], [data-variant='tactical'])
+  .hud-edge {
+  opacity: 1;
+}
+
+:root[data-scope-mask='off']
+  #intel-hud:is([data-variant='operator'], [data-variant='tactical'])
+  .hud-edge
+  .hud-readout
+  > * {
+  opacity: 0.5;
+}
+
+:root[data-scope-mask='off'] #intel-hud[data-variant='operator'] .hud-corner,
+:root[data-scope-mask='off']
+  #intel-hud:is([data-variant='minimal'], [data-variant='operator'])
+  :is(.hud-top-bar, .hud-bottom-bar) {
+  background: transparent;
+}
+
+:root[data-scope-mask='off']
+  #intel-hud:is([data-variant='minimal'], [data-variant='operator'])
+  :is(.hud-top-bar, .hud-bottom-bar) {
+  width: fit-content;
+  max-width: calc(100vw - 120px);
+  gap: 24px;
+}
+
+:root[data-scope-mask='off']
+  #intel-hud:is([data-variant='minimal'], [data-variant='operator'])
+  :is(.hud-top-bar, .hud-bottom-bar)
+  .hud-readout {
+  overflow: hidden;
+  white-space: nowrap;
+  text-overflow: ellipsis;
+}
+
+:root[data-scope-mask='off']:not([data-ui-theme='cyber'])
+  #title-bar
+  h1::before {
+  content: '';
+  position: absolute;
+  inset: -0.12em -6px;
+  z-index: -1;
+  border-radius: 2px;
+  background: rgba(0, 0, 0, 0.7);
+}
+
+:root[data-scope-mask='off']:not([data-ui-theme='cyber'])
+  :is(#title-bar .subtitle, #style-indicator .indicator-label) {
+  color: var(--text-secondary);
+}
+
+:root[data-scope-mask='off']:not([data-ui-theme='cyber']) #title-bar .subtitle {
+  margin-top: 8px;
+}
+
+:root[data-scope-mask='off']:not([data-ui-theme='cyber'])
+  #style-indicator
+  .indicator-value {
+  margin-top: 4px;
+}
+
+:root[data-scope-mask='off']
+  #intel-hud[data-variant='minimal']
+  .hud-readout:has(> :is(.hud-classification, .hud-system)) {
+  display: none;
+}
+
+:root[data-scope-mask='off']:not([data-ui-theme='cyber'])
+  #title-bar
+  .frame-rate-readout {
+  margin-top: 6px;
+}
diff --git a/src/ui/templates/display-controls.html b/src/ui/templates/display-controls.html
index f31453b6c..f6af31127 100644
--- a/src/ui/templates/display-controls.html
+++ b/src/ui/templates/display-controls.html
@@ -106,19 +106,15 @@
       </div>
     </div>
     <div class="pp-toggle-group">
-      <button class="pp-toggle-btn active" id="scope-toggle" title="Scope — the circular viewport mask" aria-pressed="true" data-i18n-title>
+      <label class="pp-toggle-btn pp-scope-toggle" title="Scope — the circular viewport mask" data-i18n-title>
         <span class="pp-icon material-symbols-outlined" aria-hidden="true">adjust</span>
         <span class="pp-label" data-i18n>Scope</span>
-      </button>
+        <input type="checkbox" id="scope-toggle" checked />
+      </label>
       <div class="pp-slider-row visible" id="scope-slider-row">
         <span class="pp-slider-mini-label" data-i18n>Feather</span>
-        <!-- Feather starts at an 11% soft scope-mask edge (owner final lock
-             2026-08-24, superseding the 08-22 hard-crop and 08-23 8% rulings);
-             mirrors SCOPE_FEATHER_RATIO_DEFAULT in src/scopeMask.js. Feather
-             softens the black mask edge; label fading is the separate Fade
-             slider. -->
-        <input type="range" class="gev-quantitative-slider pp-slider" id="scope-feather-slider" min="0" max="100" value="11" aria-label="Scope edge feather" title="Scope edge feather as a percentage of the keyhole radius" data-i18n-aria-label data-i18n-title />
-        <span class="pp-slider-value" id="scope-feather-value">11%</span>
+        <input type="range" class="gev-quantitative-slider pp-slider" id="scope-feather-slider" min="0" max="200" value="100" aria-label="Scope edge feather" title="Scope edge feather as a percentage of the keyhole radius" data-i18n-aria-label data-i18n-title />
+        <span class="pp-slider-value" id="scope-feather-value">100%</span>
       </div>
     </div>
     <div class="pp-toggle-group">
diff --git a/src/ui/templates/scene-chrome.html b/src/ui/templates/scene-chrome.html
index b3c9785f1..ba786c30b 100644
--- a/src/ui/templates/scene-chrome.html
+++ b/src/ui/templates/scene-chrome.html
@@ -11,13 +11,13 @@
   <div id="title-bar">
     <div class="title-glow"></div>
     <h1><span class="title-logo brand-logo" data-logo-gaze data-logo-src="/logo.svg" aria-hidden="true"><img src="/logo.svg" alt="" /></span> <span translate="no">GOD'S EYE <span class="title-accent">VIEW</span></span></h1>
-    <p class="subtitle" data-i18n>NO PLACE LEFT BEHIND</p>
+    <p class="subtitle scene-text-holdout" data-i18n>NO PLACE LEFT BEHIND</p>
   </div>
 
   <!-- Style indicator -->
   <div id="style-indicator">
-    <span class="indicator-label" data-i18n>ACTIVE STYLE</span>
-    <span class="indicator-value" id="active-style-name" data-i18n>NORMAL</span>
+    <span class="indicator-label scene-text-holdout" data-i18n>ACTIVE STYLE</span>
+    <span class="indicator-value scene-text-holdout" id="active-style-name" data-i18n>NORMAL</span>
   </div>
 
   <!-- Top-center camera and share actions -->
diff --git a/src/ui/visualSettings.js b/src/ui/visualSettings.js
index c804ea342..1d5f16a28 100644
--- a/src/ui/visualSettings.js
+++ b/src/ui/visualSettings.js
@@ -1,3 +1,5 @@
+import { clampScopeFeatherPct } from '../scopeMaskPolicy.js';
+import { syncScopeControls } from './displayControls.js';
 import { STYLE_STATUS_LABELS } from './visualPresets.js';
 import { syncSegmentedControl } from './segmentedControl.js';
 import { t } from '../i18n/index.js';
@@ -136,11 +138,10 @@ export class VisualSettings {
     }
     if (typeof scopeEnabled === 'boolean') {
       setScopeMaskEnabled(scopeEnabled);
-      this._scopeBtn?.classList.toggle('active', scopeEnabled);
-      this._scopeBtn?.setAttribute('aria-pressed', String(scopeEnabled));
+      syncScopeControls(this._scopeBtn, this._scopeFeatherSlider, scopeEnabled);
     }
     if (typeof scopeFeatherPct === 'number' && this._scopeFeatherSlider) {
-      const pct = Math.max(0, Math.min(100, Math.round(scopeFeatherPct)));
+      const pct = clampScopeFeatherPct(scopeFeatherPct);
       this._scopeFeatherSlider.value = String(pct);
       if (this._scopeFeatherValue)
         this._scopeFeatherValue.textContent = `${pct}%`;
@@ -1302,11 +1303,14 @@ export class VisualSettings {
     const scopeState = state.scope || {};
     if (typeof scopeState.enabled === 'boolean') {
       setScopeMaskEnabled(scopeState.enabled);
-      this._scopeBtn?.classList.toggle('active', scopeState.enabled);
-      this._scopeBtn?.setAttribute('aria-pressed', String(scopeState.enabled));
+      syncScopeControls(
+        this._scopeBtn,
+        this._scopeFeatherSlider,
+        scopeState.enabled,
+      );
     }
     if (typeof scopeState.featherPct === 'number' && this._scopeFeatherSlider) {
-      const pct = Math.max(0, Math.min(100, Math.round(scopeState.featherPct)));
+      const pct = clampScopeFeatherPct(scopeState.featherPct);
       this._scopeFeatherSlider.value = String(pct);
       if (this._scopeFeatherValue)
         this._scopeFeatherValue.textContent = `${pct}%`;