diff --git a/src/scopeMask.test.mjs b/src/scopeMask.test.mjs
index d37b6b23b..ef612493b 100644
--- a/src/scopeMask.test.mjs
+++ b/src/scopeMask.test.mjs
@@ -19,6 +19,8 @@ import {
   SCOPE_TERMINUS_MAX_PCT,
   SCOPE_FEATHER_RATIO_DEFAULT,
   getScopeMaskFeather,
+  setScopeMaskOpacity,
+  getScopeMaskOpacity,
   SCOPE_OUTSIDE_ALPHA,
   SCOPE_TERMINUS_ALPHA_NEAR,
   SCOPE_TERMINUS_FAR_M,
@@ -205,6 +207,37 @@ test('scope appearance follows direct state changes and install/destroy lifecycl
   }
 });
 
+test('scope opacity fades the painted mask without repainting it', () => {
+  const dom = stubScopeMaskDom();
+  try {
+    assert.equal(getScopeMaskOpacity(), 1, 'full by default');
+    setScopeMaskOpacity(0.4);
+    installScopeMask({ container: dom.container });
+    assert.equal(dom.canvas.style.opacity, '0.4', 'a choice made before install applies');
+    const paints = { ...dom.ops };
+    const terminus = getScopeTerminusAlpha();
+    setScopeMaskOpacity(0.25);
+    assert.equal(dom.canvas.style.opacity, '0.25');
+    assert.deepEqual(dom.ops, paints, 'the mask is not repainted');
+    assert.equal(getScopeTerminusAlpha(), terminus, 'the terminus is its own setting');
+    setScopeMaskOpacity(3);
+    assert.equal(getScopeMaskOpacity(), 1);
+    setScopeMaskOpacity(-1);
+    assert.equal(getScopeMaskOpacity(), 0);
+    setScopeMaskOpacity('soft');
+    assert.equal(getScopeMaskOpacity(), 1, 'not a number is full');
+    setScopeMaskOpacity(0.5);
+    destroyScopeMask();
+    installScopeMask({ container: dom.container });
+    assert.equal(dom.canvas.style.opacity, '0.5', 'reinstall keeps it');
+    _resetScopeMaskForTest();
+    assert.equal(getScopeMaskOpacity(), 1, 'test reset restores full');
+  } 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/share/viewCodec.test.mjs b/src/share/viewCodec.test.mjs
index f19261a16..7b876269a 100644
--- a/src/share/viewCodec.test.mjs
+++ b/src/share/viewCodec.test.mjs
@@ -119,6 +119,7 @@ function randomState(random) {
     detectionFadePct: maybe(0.5, int(0, 40)),
     detectionOutsideOpacityPct: maybe(0.5, int(0, 100)),
     scopeFeatherPct: maybe(0.5, int(0, 200)),
+    scopeOpacityPct: maybe(0.5, int(0, 100)),
     scopeTerminusPct: maybe(
       0.3,
       int(SCOPE_TERMINUS_MIN_PCT, SCOPE_TERMINUS_MAX_PCT),
@@ -210,6 +211,7 @@ test('each setting costs bytes only when it differs from its default', () => {
     detectionFadePct: 8,
     detectionOutsideOpacityPct: 2,
     scopeFeatherPct: 99,
+    scopeOpacityPct: 40,
     scopeTerminusPct: 95,
   };
   const defaults = createDefaultShareViewState();
@@ -355,6 +357,7 @@ test('every registered field round-trips at once', () => {
     celestialRing: true,
     scopeEnabled: false,
     scopeFeatherPct: 35,
+    scopeOpacityPct: 60,
     scopeTerminusPct: 97,
     mapStack: 'esri-imagery',
     layerState,
@@ -1587,3 +1590,50 @@ test('Data Library tokens round-trip and malformed ones are skipped', () => {
   assert.equal(normalizeLibraryTokens(null), null);
   assert.deepEqual(normalizeLibraryTokens('x'.repeat(500)), []);
 });
+
+test('scope opacity is field 30; a link made before it opens at full opacity', () => {
+  // Made before field 30 existed: thermal, Cyber, Scope off at 35% feather
+  // and a pinned terminus.
+  const before = 'ARD-7j4YuxMguBcoUEgQcAOAAQPIASPQAWGa';
+  const old = decodeOk(before).state;
+  assert.equal(old.scopeOpacityPct, 100);
+  assert.equal(old.scopeFeatherPct, 35);
+  assert.equal(encodeShareView(old), before, 'it still encodes to itself');
+  const state = {
+    lat: 51.5007,
+    lon: -0.1246,
+    alt: 1500,
+    heading: 40,
+    style: 'thermal',
+    scopeEnabled: false,
+    scopeFeatherPct: 35,
+    scopeTerminusPct: 97,
+    hudVariant: 'cyber',
+  };
+  assert.equal(encodeShareView(state), before);
+  assert.equal(encodeShareView({ ...state, scopeOpacityPct: 100 }), before);
+  const faded = assertRoundTrip({ ...state, scopeOpacityPct: 45 });
+  assert.notEqual(faded, before);
+  assert.equal(decodeOk(faded).state.scopeOpacityPct, 45);
+  assert.equal(
+    decodeOk(assertRoundTrip({ scopeOpacityPct: 0 })).state.scopeOpacityPct,
+    0,
+  );
+  // Out of range is clamped; anything not a number is the default.
+  assert.equal(
+    normalizeShareViewState({ scopeOpacityPct: 150 }).scopeOpacityPct,
+    100,
+  );
+  assert.equal(
+    normalizeShareViewState({ scopeOpacityPct: -5 }).scopeOpacityPct,
+    0,
+  );
+  assert.equal(
+    normalizeShareViewState({ scopeOpacityPct: 33.6 }).scopeOpacityPct,
+    34,
+  );
+  assert.equal(
+    normalizeShareViewState({ scopeOpacityPct: 'x' }).scopeOpacityPct,
+    100,
+  );
+});
diff --git a/src/sharelink.celestial.test.mjs b/src/sharelink.celestial.test.mjs
index 0e77e8303..a7326d12b 100644
--- a/src/sharelink.celestial.test.mjs
+++ b/src/sharelink.celestial.test.mjs
@@ -121,6 +121,29 @@ test('scope feather above 100% survives share parsing and serialization', () =>
   clearTimeout(manager._debounceTimer);
 });
 
+test('scope opacity rides as sco only below full, and through the compact link', () => {
+  // Links without `sco`, every link made before it, open at full opacity.
+  assert.equal(makeManager('#v=2&lat=10&lon=20&scf=35').parseInitialHash().scopeOpacityPct, 100);
+  assert.equal(makeManager('#v=2&lat=10&lon=20&sco=40').parseInitialHash().scopeOpacityPct, 40);
+  assert.equal(makeManager('#v=2&lat=10&lon=20&sco=250').parseInitialHash().scopeOpacityPct, 100);
+  assert.equal(makeManager('#v=2&lat=10&lon=20&sco=-3').parseInitialHash().scopeOpacityPct, 0);
+  assert.equal(makeManager('#v=2&lat=10&lon=20&sco=x').parseInitialHash().scopeOpacityPct, 100);
+
+  const manager = makeManager();
+  manager.onToggleChange(false, true, {});
+  const before = manager._buildHashParams().toString();
+  assert.equal(manager._buildHashParams().has('sco'), false, 'full opacity writes nothing');
+  manager.onToggleChange(false, true, { scopeOpacityPct: 100 });
+  assert.equal(manager._buildHashParams().toString(), before);
+  manager.onToggleChange(false, true, { scopeOpacityPct: 45.4 });
+  assert.equal(manager._buildHashParams().get('sco'), '45');
+  assert.equal(sharedState(manager.buildLink()).scopeOpacityPct, 45);
+  manager.onToggleChange(false, true, { scopeOpacityPct: 100 });
+  assert.equal(manager._buildHashParams().has('sco'), false);
+  assert.equal(sharedState(manager.buildLink()).scopeOpacityPct, 100);
+  clearTimeout(manager._debounceTimer);
+});
+
 test('share-link serialization emits the current celestial state', () => {
   const manager = makeManager();
   manager.onToggleChange(false, false, { celestialRingEnabled: false });
diff --git a/src/ui/cyberTheme.test.mjs b/src/ui/cyberTheme.test.mjs
index fdbe64284..4c8b40dff 100644
--- a/src/ui/cyberTheme.test.mjs
+++ b/src/ui/cyberTheme.test.mjs
@@ -1,4 +1,11 @@
-import { getScopeMaskFeather, isScopeMaskEnabled, setScopeMaskEnabled, setScopeMaskFeather } from '../scopeMask.js';
+import {
+  getScopeMaskFeather,
+  getScopeMaskOpacity,
+  isScopeMaskEnabled,
+  setScopeMaskEnabled,
+  setScopeMaskFeather,
+  setScopeMaskOpacity,
+} from '../scopeMask.js';
 import assert from 'node:assert/strict';
 import { readFileSync } from 'node:fs';
 import test from 'node:test';
@@ -298,6 +305,36 @@ test('scope choice and expanded feather survive every HUD layout and both restor
   assert.deepEqual(shown, { enabled: true, featherPct: 200, opacityPct: 100 });
 });
 
+test('a shared scope opacity is restored and rides in the next share state', async (t) => {
+  const { owner } = styleOwner(t, 'tactical');
+  const previous = getScopeMaskOpacity();
+  t.after(() => setScopeMaskOpacity(previous));
+  Object.assign(owner.services, {
+    setScopeMaskEnabled() {},
+    setScopeMaskFeather() {},
+    setScopeMaskOpacity,
+  });
+  let shown = null;
+  owner.store = { publish: (view) => (shown = view.scope) };
+  await owner.restoreShareState({ scopeOpacityPct: 40 });
+  assert.equal(getScopeMaskOpacity(), 0.4);
+  assert.equal(shown.opacityPct, 40);
+  // A state without it leaves the opacity alone.
+  await owner.restoreShareState({ scopeFeatherPct: 80 });
+  assert.equal(getScopeMaskOpacity(), 0.4);
+  assert.equal(shown.opacityPct, 40);
+  Object.assign(owner.services, {
+    getDetectionTuning: () => ({ allocationStrategy: 'ELASTIC' }),
+    getDetectionMode: () => 'OFF',
+    isScopeMaskEnabled: () => true,
+    getScopeMaskFeather: () => 0.8,
+    getScopeMaskOpacity,
+    getScopeTerminusOverride: () => null,
+  });
+  owner.readCelestialRing = () => null;
+  assert.equal(owner._readShareState().options.scopeOpacityPct, 40);
+});
+
 test('a scene shot saved with the retired Snow style plays on Normal', async (t) => {
   const { owner } = styleOwner(t, 'tactical');
   owner.setStyle('noir');
diff --git a/src/ui/displayPanel.test.mjs b/src/ui/displayPanel.test.mjs
index 5185f9ab5..5b9489f39 100644
--- a/src/ui/displayPanel.test.mjs
+++ b/src/ui/displayPanel.test.mjs
@@ -314,6 +314,59 @@ test('Scope and Celestial render what VisualSettings shows', async (t) => {
   assert.equal(celestial.title, 'Celestial ring — reveal the full globe');
 });
 
+test('scope opacity renders what VisualSettings shows and sets the mask', async (t) => {
+  const { store, $ } = fixture(t);
+  const { owner } = settings(store);
+  const mask = { opacity: 1 };
+  owner.services = {
+    ...owner.services,
+    setScopeMaskEnabled() {},
+    setScopeMaskOpacity: (value) => (mask.opacity = value),
+  };
+  assert.equal($('scope-opacity-slider').value, '100');
+  assert.equal($('scope-opacity-value').textContent, '100%');
+
+  owner._setScope({ opacityPct: 42.4 });
+  await nextTick();
+  assert.equal(mask.opacity, 0.42);
+  assert.equal($('scope-opacity-slider').value, '42');
+  assert.equal($('scope-opacity-value').textContent, '42%');
+  assert.equal(store.view.scope.opacityPct, 42);
+
+  owner._setScope({ opacityPct: 180 });
+  await nextTick();
+  assert.equal(mask.opacity, 1, 'clamped');
+  assert.equal($('scope-opacity-value').textContent, '100%');
+
+  owner._setScope({ opacityPct: 30 }, { apply: false });
+  await nextTick();
+  assert.equal(mask.opacity, 1, 'only shown');
+  assert.equal($('scope-opacity-value').textContent, '30%');
+
+  owner._setScope({ enabled: false });
+  await nextTick();
+  assert.equal($('scope-opacity-slider').disabled, true, 'off with the scope');
+  assert.equal(store.view.scope.opacityPct, 30, 'kept while off');
+});
+
+test('the Visual panel groups its controls and words its on/off pills', (t) => {
+  const { $ } = fixture(t);
+  const panel = $('pp-toggles');
+  assert.deepEqual(
+    [...panel.querySelectorAll('.pp-section-heading, .visual-presets__heading')].map(
+      (el) => el.textContent.trim(),
+    ),
+    ['Look', 'MAP SOURCE 3D', 'Overlay', 'Effects'],
+  );
+  assert.equal(panel.querySelector('.pp-header-label').textContent, 'VISUAL');
+  const body = panel.querySelector('.pp-panel-body');
+  assert.equal(body.style.getPropertyValue('--pp-pill-on'), '"ON"');
+  assert.equal(body.style.getPropertyValue('--pp-pill-off'), '"OFF"');
+  const reset = panel.querySelector('.pp-reset-btn');
+  assert.equal(reset, body.lastElementChild, 'the reset closes the panel');
+  assert.equal(reset.textContent.trim(), 'restart_altReset to default');
+});
+
 test('the 3D aircraft group renders what AircraftDisplay shows', async (t) => {
   const { store, $ } = fixture(t);
   const params = [];
diff --git a/src/ui/displayPanelActions.test.mjs b/src/ui/displayPanelActions.test.mjs
index 061a13fba..32a8e8d1b 100644
--- a/src/ui/displayPanelActions.test.mjs
+++ b/src/ui/displayPanelActions.test.mjs
@@ -231,3 +231,100 @@ test('several owners answer their own actions, the newest first', (t) => {
     ['display', 'toggleBloom'],
   ]);
 });
+
+test('the Visual panel’s scope opacity, reset and presets call their actions', async (t) => {
+  const store = mount(t);
+  const { calls } = recorder(store);
+  const selected = [];
+  store.connectMapSource({ select: async (id) => selected.push(id) });
+  store.publishMapSource({
+    status: { text: 'OSM', warn: false },
+    chips: [
+      { id: 'photoreal', label: 'Google 3D', available: false },
+      { id: 'osm', label: 'OSM', available: true, active: true },
+    ],
+  });
+  await nextTick();
+  input($('scope-opacity-slider'), 40);
+  document.querySelector('#pp-toggles .pp-reset-btn').click();
+  const presets = document.querySelector('#pp-toggles .visual-presets');
+  presets.querySelector('[data-style="noir"]').click();
+  const chips = presets.querySelectorAll('.visual-presets__chip');
+  chips[0].click();
+  chips[1].click();
+  assert.deepEqual(calls, [
+    ['setScopeOpacity', 40],
+    ['resetVisual'],
+    ['setStyle', 'noir'],
+  ]);
+  assert.deepEqual(selected, ['osm'], 'an unavailable source is not selected');
+  // The presets follow the published style, as the dock's do.
+  assert.equal(
+    presets.querySelector('[data-style="normal"]').getAttribute('aria-pressed'),
+    'true',
+  );
+  store.publishStyle({ name: 'noir', label: 'NOIR' });
+  await nextTick();
+  assert.equal(
+    presets.querySelector('[data-style="noir"]').getAttribute('aria-pressed'),
+    'true',
+  );
+  assert.equal(
+    presets.querySelector('[data-style="normal"]').getAttribute('aria-pressed'),
+    'false',
+  );
+  // The dock keeps its own presets and map source beside them.
+  assert.ok(
+    document.querySelector('#control-panel .style-btn[data-style="noir"]'),
+  );
+  assert.ok($('map-stack-chips'));
+});
+
+test('DisplayBindings sets the scope opacity and resets Visual to its defaults', (t) => {
+  const store = mount(t);
+  const calls = [];
+  const bindings = new DisplayBindings({
+    viewer: null,
+    services: { isScopeMaskEnabled: () => true, cycleDetectionMode: () => {} },
+    elements: { _locationSearch: document.createElement('input') },
+    operations: {
+      setStyle: (style, options) => calls.push(['style', style, options]),
+      _applyGlobalPostDefaults: () => calls.push(['postDefaults']),
+      _setDetectionAllocation: (value) => calls.push(['allocation', value]),
+      _setScope: (scope) => calls.push(['scope', scope]),
+      _setModels3dEnabled: (on) => calls.push(['models3d', on]),
+      _setModels3dMode: (mode) => calls.push(['models3dMode', mode]),
+      _syncModels3dModeRow: () => calls.push(['models3dRow']),
+      _syncShareState: () => calls.push(['share']),
+    },
+    readState: () => ({
+      shareLinkManager: {
+        claimRestoreLane: (lane) => calls.push(['claim', lane]),
+      },
+    }),
+    claimDetection: () => {},
+    displayStore: store,
+  });
+  bindings._initUI();
+  t.after(() => bindings.destroy());
+  calls.length = 0;
+  input($('scope-opacity-slider'), 35);
+  assert.deepEqual(calls, [
+    ['claim', 'visual'],
+    ['scope', { opacityPct: 35 }],
+    ['share'],
+  ]);
+  calls.length = 0;
+  document.querySelector('#pp-toggles .pp-reset-btn').click();
+  assert.deepEqual(calls, [
+    ['claim', 'visual'],
+    ['style', 'normal', { userInitiated: true }],
+    ['postDefaults'],
+    ['allocation', 'ELASTIC'],
+    ['scope', { enabled: true, featherPct: 100, opacityPct: 100 }],
+    ['models3d', true],
+    ['models3dMode', 'proximity'],
+    ['models3dRow'],
+    ['share'],
+  ]);
+});