diff --git a/.config/nextest.toml b/.config/nextest.toml
index 2a4cd2cb93..11ec94cc1a 100644
--- a/.config/nextest.toml
+++ b/.config/nextest.toml
@@ -1,3 +1,10 @@
 # Minimum cargo-nextest for this repository: GHSA-vc25-qg58-w57c is fixed in 0.9.150 and CI
 # installs exactly that version, so an older nextest refuses to run (exit 92 REQUIRED_VERSION_NOT_MET).
 nextest-version = "0.9.150"
+
+# These measurements require a quiet runner. Their in-process SERIAL mutex only
+# serializes cargo test; nextest gives each test its own process. Reserve all slots
+# so other tests cannot charge their CPU/render-worker time to a frame budget.
+[[profile.default.overrides]]
+filter = 'package(pdfcraft-ui-egui) & binary(perf)'
+threads-required = "num-test-threads"
diff --git a/ROADMAP.md b/ROADMAP.md
index 00622a79b7..14419f9857 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -806,3 +806,5 @@ PR #2133 retains document-local Pages sidebar focus for Ctrl/Cmd+A and Escape af
 ## Button export-value refresh (2026-10-30)
 
 PR #1952 retains per-widget checkbox/radio export-value editing in the split form-authoring and Prepare modules. Caption editing remains supported. Tests cover preserved appearances and selection, invalid/locked refusals, data-format round trips, and Apply/Cancel/Undo. Current-head hosted validation is pending; feature estimates are unchanged.
+
+- **2026-10-31 (#1577):** Reconciled the page-shadow preference with split viewer, organizer, settings and control modules, preserving upstream page-gap shadow suppression. CI validation pending.
diff --git a/crates/ui-egui/src/app.rs b/crates/ui-egui/src/app.rs
index dc564c0011..e00a11f430 100644
--- a/crates/ui-egui/src/app.rs
+++ b/crates/ui-egui/src/app.rs
@@ -91,6 +91,7 @@ impl PdfCraftApp {
             // A fresh install follows the desktop's appearance (#1248); saved settings override.
             theme_preference: ThemePreference::System,
             reading_colors: Default::default(),
+            show_page_edge_shadows: true,
             #[cfg(target_os = "linux")]
             desktop_theme: None,
             #[cfg(target_os = "linux")]
diff --git a/crates/ui-egui/src/app/control.rs b/crates/ui-egui/src/app/control.rs
index 79bd2fa258..85fdae38af 100644
--- a/crates/ui-egui/src/app/control.rs
+++ b/crates/ui-egui/src/app/control.rs
@@ -32,6 +32,9 @@ impl PdfCraftApp {
                 };
                 self.set_theme_preference(preference);
             }
+            ("show_page_edge_shadows", _) => {
+                self.show_page_edge_shadows = value.parse::<bool>().map_err(|_| "show_page_edge_shadows must be true or false")?;
+            }
             ("scroll_speed", _) => {
                 self.scroll_speed = scroll_speed::ScrollSpeed::parse(value).ok_or("scroll_speed must be slow, normal, or fast")?;
             }
diff --git a/crates/ui-egui/src/app/prefs.rs b/crates/ui-egui/src/app/prefs.rs
index e5eaae5863..7dd9846a74 100644
--- a/crates/ui-egui/src/app/prefs.rs
+++ b/crates/ui-egui/src/app/prefs.rs
@@ -143,6 +143,7 @@ impl PdfCraftApp {
         v["redact_prefs"] = self.redact_defaults.to_json();
         // Set outside json! above, which is at serde_json's macro recursion limit.
         v["hide_empty_highlight_hover"] = serde_json::Value::Bool(self.comment_prefs.hide_empty_highlight_hover);
+        v["show_page_edge_shadows"] = self.show_page_edge_shadows.into();
         v["comment_tool_pinned"] = serde_json::Value::Bool(self.comment_prefs.pinned);
         v["show_secured_notice"] = serde_json::Value::Bool(self.show_secured_notice);
         v["organize_zoom"] = serde_json::json!(self.organize_zoom);
@@ -267,6 +268,9 @@ impl PdfCraftApp {
         {
             self.fill_text_color = color;
         }
+        if let Some(show) = v["show_page_edge_shadows"].as_bool() {
+            self.show_page_edge_shadows = show;
+        }
         if let Some(prefs) = RedactPrefs::from_json(&v["redact_prefs"]) {
             self.redact_prefs = prefs.clone();
             self.redact_defaults = prefs;
diff --git a/crates/ui-egui/src/canvas.rs b/crates/ui-egui/src/canvas.rs
index 8b280ba75d..5625587a69 100644
--- a/crates/ui-egui/src/canvas.rs
+++ b/crates/ui-egui/src/canvas.rs
@@ -862,6 +862,7 @@ struct PageEnv<'a> {
     modal: bool,
     navigation_enabled: bool,
     paper: Color32,
+    show_page_edge_shadows: bool,
     ppp: f32,
     precise_scroll: Vec2,
     prefs: &'a comments::CommentPrefs,
@@ -952,7 +953,7 @@ fn paint_page_surface(ui: &mut egui::Ui, view: &mut DocView, frame: &mut PageFra
     let info = frame.env.info;
     let painter = ui.painter();
     // Shadows would darken the preceding page when pages touch.
-    if view.show_page_gaps {
+    if view.show_page_gaps && frame.env.show_page_edge_shadows {
         painter.add(egui::epaint::Shadow { offset: [0, 3], blur: 14, spread: 0, color: t.page_shadow }.as_shape(r, CornerRadius::ZERO));
     }
     painter.rect_filled(r, CornerRadius::ZERO, paper);
@@ -3049,7 +3050,7 @@ pub fn document_area(app: &mut PdfCraftApp, index: usize, ui: &mut egui::Ui) {
     if view.organize {
         // One remembered grid size for every document, kept in the settings.
         view.set_grid_zoom(organize_zoom);
-        organize_grid(view, info, doc.allows_assembly(), doc.dirty, unobstructed, ui, &t);
+        organize_grid(view, doc, unobstructed, app.show_page_edge_shadows, ui, &t);
         app.organize_zoom = view.grid_zoom();
         return;
     }
@@ -3204,6 +3205,7 @@ pub fn document_area(app: &mut PdfCraftApp, index: usize, ui: &mut egui::Ui) {
         modal,
         navigation_enabled,
         paper,
+        show_page_edge_shadows: app.show_page_edge_shadows,
         ppp,
         precise_scroll,
         prefs,
@@ -3229,9 +3231,14 @@ pub fn document_area(app: &mut PdfCraftApp, index: usize, ui: &mut egui::Ui) {
         today,
     };
     let mut page_out = PageOut::default();
+    let fade_strength = ui.spacing().scroll.fade.strength;
+    if !app.show_page_edge_shadows {
+        ui.spacing_mut().scroll.fade.strength = 0.0;
+    }
     let out = page_scroll(ui, scroll, egui::Id::unique(("page-view-scope", view.id)), |ui, viewport| {
         draw_pages(ui, viewport, view, &env, &mut page_out, &mut app.signature_preview)
     });
+    ui.spacing_mut().scroll.fade.strength = fade_strength;
     let PageOut {
         canvas_action,
         clicked_link,
diff --git a/crates/ui-egui/src/canvas/organize.rs b/crates/ui-egui/src/canvas/organize.rs
index 7f333b3e46..48c7e82d8f 100644
--- a/crates/ui-egui/src/canvas/organize.rs
+++ b/crates/ui-egui/src/canvas/organize.rs
@@ -267,7 +267,17 @@ fn request_sharper(
     }
 }
 
-pub(super) fn organize_grid(view: &mut DocView, info: &DocInfo, editable: bool, dirty: bool, unobstructed: bool, ui: &mut egui::Ui, t: &Tokens) {
+pub(super) fn organize_grid(
+    view: &mut DocView,
+    doc: &pdfcraft_engine::Document,
+    unobstructed: bool,
+    show_page_edge_shadows: bool,
+    ui: &mut egui::Ui,
+    t: &Tokens,
+) {
+    let info = &doc.info;
+    let editable = doc.allows_assembly();
+    let dirty = doc.dirty;
     let ppp = ui.ctx().pixels_per_point();
     // The page image scales with the zoom; the padding and the page number don't.
     let cell = vec2(146.0 * view.grid_zoom + 44.0, 194.0 * view.grid_zoom + 88.0);
@@ -290,6 +300,10 @@ pub(super) fn organize_grid(view: &mut DocView, info: &DocInfo, editable: bool,
     let (mut in_view, mut sharper): (Vec<(usize, f32)>, Vec<RenderRequest>) = (Vec::new(), Vec::new());
     // The source cell can scroll out of the virtualized rows during a drag.
     let mut drop = view.org_drag.is_some() && ui.input(|i| i.pointer.primary_released());
+    let fade_strength = ui.spacing().scroll.fade.strength;
+    if !show_page_edge_shadows {
+        ui.spacing_mut().scroll.fade.strength = 0.0;
+    }
     egui::ScrollArea::vertical().auto_shrink([false, false]).show_viewport(ui, |ui, clip| {
         apply_auto_scroll(ui, middle_gesture, auto_delta);
         ui.add_space(20.0);
@@ -329,7 +343,9 @@ pub(super) fn organize_grid(view: &mut DocView, info: &DocInfo, editable: bool,
                 if view.selected.contains(&i) {
                     ui.painter().rect_stroke(c.shrink(6.0), CornerRadius::same(8), Stroke::new(1.5, t.accent), egui::StrokeKind::Inside);
                 }
-                ui.painter().rect_filled(pr.translate(vec2(0.0, 1.5)), CornerRadius::same(1), t.page_shadow);
+                if show_page_edge_shadows {
+                    ui.painter().rect_filled(pr.translate(vec2(0.0, 1.5)), CornerRadius::same(1), t.page_shadow);
+                }
                 ui.painter().rect_filled(pr, CornerRadius::ZERO, Color32::WHITE);
                 // A page drawn larger than its thumbnail gets a render at the size drawn, while
                 // it is in view; until that arrives the thumbnail stands in.
@@ -507,6 +523,7 @@ pub(super) fn organize_grid(view: &mut DocView, info: &DocInfo, editable: bool,
             view.org_drag = None;
         }
     });
+    ui.spacing_mut().scroll.fade.strength = fade_strength;
     // Files dragged in from outside go to the gap under the pointer. Some platforms don't say
     // where the pointer is until the files are dropped; then the whole grid is the target.
     let pointer = ui.input(|i| i.pointer.hover_pos()).filter(|p| viewport.contains(*p));
diff --git a/crates/ui-egui/src/control.rs b/crates/ui-egui/src/control.rs
index 43c41889e5..c3c730ed68 100644
--- a/crates/ui-egui/src/control.rs
+++ b/crates/ui-egui/src/control.rs
@@ -28,6 +28,8 @@
 //!   comments, selecting text, moving comments). `ui.state` reports `pages_on_screen` to aim at.
 //! - `ui.type {text}`, `ui.key {key, modifiers?}`: keyboard input to the focused widget / app.
 //! - `ui.command {id}`: run a registry command (as the menu would). `ui.commands` lists them.
+//! - `ui.set {key: "show_page_edge_shadows", value: "true"|"false"}` controls page
+//!   decoration app-wide; `ui.state.show_page_edge_shadows` reports the saved preference.
 //! - `ui.set {key, value}`: view options (`--page`, `--zoom`, …), plus persistent preferences.
 //!   `select` accepts physical page numbers and ranges such as `1,12,16-18`; blank clears the
 //!   explicit selection. This is the same bounded parser as the Organize Pages field; invalid
diff --git a/crates/ui-egui/src/control/host.rs b/crates/ui-egui/src/control/host.rs
index 1166c0e7ec..64b10b69fb 100644
--- a/crates/ui-egui/src/control/host.rs
+++ b/crates/ui-egui/src/control/host.rs
@@ -141,6 +141,7 @@ impl Host for crate::PdfCraftApp {
             "palette_open": self.palette_open,
             "theme": format!("{:?}", self.theme),
             "theme_preference": self.theme_preference,
+            "show_page_edge_shadows": self.show_page_edge_shadows,
             "language": self.language,
             "notice": self.toast.as_ref().map(|t| t.0.clone()),
             "progress": self.progress_notice.as_ref().map(|p| json!({ "label": p.label, "fraction": p.fraction })),
diff --git a/crates/ui-egui/src/i18n/ar.tsv b/crates/ui-egui/src/i18n/ar.tsv
index 56f62b7734..6e06c424df 100644
--- a/crates/ui-egui/src/i18n/ar.tsv
+++ b/crates/ui-egui/src/i18n/ar.tsv
@@ -2854,3 +2854,4 @@ certificate	Version	الإصدار
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	خيارات هذا الرد
 	Export value	قيمة التصدير
+	Show Page Edge Shadows	إظهار ظلال حواف الصفحات
diff --git a/crates/ui-egui/src/i18n/bg.tsv b/crates/ui-egui/src/i18n/bg.tsv
index ceccdf9582..8fe56514df 100644
--- a/crates/ui-egui/src/i18n/bg.tsv
+++ b/crates/ui-egui/src/i18n/bg.tsv
@@ -2541,3 +2541,4 @@ animation effects	Off	Изключени
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Опции за този отговор
 	Export value	Стойност за експортиране
+	Show Page Edge Shadows	Показване на сенки по краищата на страниците
diff --git a/crates/ui-egui/src/i18n/cs.tsv b/crates/ui-egui/src/i18n/cs.tsv
index 8bfde72a85..8ecd80d30b 100644
--- a/crates/ui-egui/src/i18n/cs.tsv
+++ b/crates/ui-egui/src/i18n/cs.tsv
@@ -2885,3 +2885,4 @@ certificate	Version	Verze
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Možnosti této odpovědi
 	Export value	Exportní hodnota
+	Show Page Edge Shadows	Zobrazovat stíny okrajů stránek
diff --git a/crates/ui-egui/src/i18n/de.tsv b/crates/ui-egui/src/i18n/de.tsv
index 83684c08ea..2d6afea2c8 100644
--- a/crates/ui-egui/src/i18n/de.tsv
+++ b/crates/ui-egui/src/i18n/de.tsv
@@ -2579,3 +2579,4 @@ animation effects	Off	Aus
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Optionen für diese Antwort
 	Export value	Exportwert
+	Show Page Edge Shadows	Schatten an Seitenrändern anzeigen
diff --git a/crates/ui-egui/src/i18n/el.tsv b/crates/ui-egui/src/i18n/el.tsv
index 576cdfcd6d..3c2f2e2050 100644
--- a/crates/ui-egui/src/i18n/el.tsv
+++ b/crates/ui-egui/src/i18n/el.tsv
@@ -2584,3 +2584,4 @@ animation effects	Off	Ανενεργά
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Επιλογές για αυτήν την απάντηση
 	Export value	Τιμή εξαγωγής
+	Show Page Edge Shadows	Εμφάνιση σκιών στα άκρα των σελίδων
diff --git a/crates/ui-egui/src/i18n/es.tsv b/crates/ui-egui/src/i18n/es.tsv
index 3216e4e448..f5f1b4b6ff 100644
--- a/crates/ui-egui/src/i18n/es.tsv
+++ b/crates/ui-egui/src/i18n/es.tsv
@@ -2901,3 +2901,4 @@ theme	Appearance	Aspecto
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Opciones de esta respuesta
 	Export value	Valor de exportación
+	Show Page Edge Shadows	Mostrar sombras en los bordes de las páginas
diff --git a/crates/ui-egui/src/i18n/fr.tsv b/crates/ui-egui/src/i18n/fr.tsv
index 6092231df3..f31b3741b6 100644
--- a/crates/ui-egui/src/i18n/fr.tsv
+++ b/crates/ui-egui/src/i18n/fr.tsv
@@ -2844,3 +2844,4 @@ certificate	Version	Version
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Options de cette réponse
 	Export value	Valeur d’exportation
+	Show Page Edge Shadows	Afficher les ombres des bords des pages
diff --git a/crates/ui-egui/src/i18n/hu.tsv b/crates/ui-egui/src/i18n/hu.tsv
index 53b81062bb..e74944e33e 100644
--- a/crates/ui-egui/src/i18n/hu.tsv
+++ b/crates/ui-egui/src/i18n/hu.tsv
@@ -2577,3 +2577,4 @@ animation effects	Off	Ki
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	A válasz beállításai
 	Export value	Exportérték
+	Show Page Edge Shadows	Oldalszéli árnyékok megjelenítése
diff --git a/crates/ui-egui/src/i18n/it.tsv b/crates/ui-egui/src/i18n/it.tsv
index a3dc999d6d..82973756fa 100644
--- a/crates/ui-egui/src/i18n/it.tsv
+++ b/crates/ui-egui/src/i18n/it.tsv
@@ -2810,3 +2810,4 @@ certificate	SHA-256 digest	Impronta SHA-256
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Opzioni per questa risposta
 	Export value	Valore di esportazione
+	Show Page Edge Shadows	Mostra le ombre ai bordi delle pagine
diff --git a/crates/ui-egui/src/i18n/ja.tsv b/crates/ui-egui/src/i18n/ja.tsv
index 5e64a1a8ce..ef055d436f 100644
--- a/crates/ui-egui/src/i18n/ja.tsv
+++ b/crates/ui-egui/src/i18n/ja.tsv
@@ -2578,3 +2578,4 @@ animation effects	Off	オフ
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	この返信のオプション
 	Export value	書き出し値
+	Show Page Edge Shadows	ページ端の影を表示
diff --git a/crates/ui-egui/src/i18n/kk.tsv b/crates/ui-egui/src/i18n/kk.tsv
index 5c8e594759..47061d3a25 100644
--- a/crates/ui-egui/src/i18n/kk.tsv
+++ b/crates/ui-egui/src/i18n/kk.tsv
@@ -2576,3 +2576,4 @@ animation effects	Off	Өшірулі
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Осы жауаптың параметрлері
 	Export value	Экспорт мәні
+	Show Page Edge Shadows	Бет жиектерінің көлеңкелерін көрсету
diff --git a/crates/ui-egui/src/i18n/lt.tsv b/crates/ui-egui/src/i18n/lt.tsv
index 61fd9dc9a2..9385c27907 100644
--- a/crates/ui-egui/src/i18n/lt.tsv
+++ b/crates/ui-egui/src/i18n/lt.tsv
@@ -2839,3 +2839,4 @@ theme	Appearance	Išvaizda
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Šio atsakymo parinktys
 	Export value	Eksporto reikšmė
+	Show Page Edge Shadows	Rodyti puslapių kraštų šešėlius
diff --git a/crates/ui-egui/src/i18n/pl.tsv b/crates/ui-egui/src/i18n/pl.tsv
index 203cad58d8..e333b1075e 100644
--- a/crates/ui-egui/src/i18n/pl.tsv
+++ b/crates/ui-egui/src/i18n/pl.tsv
@@ -2674,3 +2674,4 @@ animation effects	Off	Wyłączone
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Opcje tej odpowiedzi
 	Export value	Wartość eksportowa
+	Show Page Edge Shadows	Pokaż cienie krawędzi stron
diff --git a/crates/ui-egui/src/i18n/pt-br.tsv b/crates/ui-egui/src/i18n/pt-br.tsv
index 45f827171b..cd6d8f3e2f 100644
--- a/crates/ui-egui/src/i18n/pt-br.tsv
+++ b/crates/ui-egui/src/i18n/pt-br.tsv
@@ -2863,3 +2863,4 @@ theme	Appearance	Aparência
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Opções desta resposta
 	Export value	Valor de exportação
+	Show Page Edge Shadows	Mostrar sombras nas bordas das páginas
diff --git a/crates/ui-egui/src/i18n/ru.tsv b/crates/ui-egui/src/i18n/ru.tsv
index 59c483526a..047c01228e 100644
--- a/crates/ui-egui/src/i18n/ru.tsv
+++ b/crates/ui-egui/src/i18n/ru.tsv
@@ -2491,3 +2491,4 @@ animation effects	Off	Выкл
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Параметры этого ответа
 	Export value	Значение экспорта
+	Show Page Edge Shadows	Показывать тени по краям страниц
diff --git a/crates/ui-egui/src/i18n/sl.tsv b/crates/ui-egui/src/i18n/sl.tsv
index 83cb594158..63c3a3f77d 100644
--- a/crates/ui-egui/src/i18n/sl.tsv
+++ b/crates/ui-egui/src/i18n/sl.tsv
@@ -2583,3 +2583,4 @@ animation effects	Off	Izklopljeni
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Možnosti tega odgovora
 	Export value	Izvozna vrednost
+	Show Page Edge Shadows	Prikaži sence robov strani
diff --git a/crates/ui-egui/src/i18n/te.tsv b/crates/ui-egui/src/i18n/te.tsv
index 0bb56f4793..6186eb1713 100644
--- a/crates/ui-egui/src/i18n/te.tsv
+++ b/crates/ui-egui/src/i18n/te.tsv
@@ -2487,3 +2487,4 @@ animation effects	Off	ఆఫ్
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	ఈ ప్రత్యుత్తరం ఎంపికలు
 	Export value	ఎగుమతి విలువ
+	Show Page Edge Shadows	పేజీ అంచుల నీడలను చూపించు
diff --git a/crates/ui-egui/src/i18n/tr.tsv b/crates/ui-egui/src/i18n/tr.tsv
index b52688606b..a8a993af80 100644
--- a/crates/ui-egui/src/i18n/tr.tsv
+++ b/crates/ui-egui/src/i18n/tr.tsv
@@ -2574,3 +2574,4 @@ animation effects	Off	Kapalı
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Bu yanıtın seçenekleri
 	Export value	Dışa aktarma değeri
+	Show Page Edge Shadows	Sayfa kenarı gölgelerini göster
diff --git a/crates/ui-egui/src/i18n/uk.tsv b/crates/ui-egui/src/i18n/uk.tsv
index dc65faf7a2..566e673176 100644
--- a/crates/ui-egui/src/i18n/uk.tsv
+++ b/crates/ui-egui/src/i18n/uk.tsv
@@ -2600,3 +2600,4 @@ animation effects	Off	Вимкнено
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Параметри цієї відповіді
 	Export value	Значення експорту
+	Show Page Edge Shadows	Показувати тіні на краях сторінок
diff --git a/crates/ui-egui/src/i18n/vi.tsv b/crates/ui-egui/src/i18n/vi.tsv
index e9a9a73f2b..41063cc0da 100644
--- a/crates/ui-egui/src/i18n/vi.tsv
+++ b/crates/ui-egui/src/i18n/vi.tsv
@@ -2845,3 +2845,4 @@ key	Space	Space
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	Tùy chọn cho câu trả lời này
 	Export value	Giá trị xuất
+	Show Page Edge Shadows	Hiển thị bóng viền trang
diff --git a/crates/ui-egui/src/i18n/zh-hans.tsv b/crates/ui-egui/src/i18n/zh-hans.tsv
index 5f08576b8e..6089c942fd 100644
--- a/crates/ui-egui/src/i18n/zh-hans.tsv
+++ b/crates/ui-egui/src/i18n/zh-hans.tsv
@@ -2542,3 +2542,4 @@ animation effects	Off	关
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	此回复的选项
 	Export value	导出值
+	Show Page Edge Shadows	显示页面边缘阴影
diff --git a/crates/ui-egui/src/i18n/zh-hant.tsv b/crates/ui-egui/src/i18n/zh-hant.tsv
index 2570f12f1c..292e399579 100644
--- a/crates/ui-egui/src/i18n/zh-hant.tsv
+++ b/crates/ui-egui/src/i18n/zh-hant.tsv
@@ -2528,3 +2528,4 @@ animation effects	Off	關
 # Comments panel: each reply's own "…" menu (AI-assisted, not separately native-reviewed)
 	Options for this reply	此回覆的選項
 	Export value	匯出值
+	Show Page Edge Shadows	顯示頁面邊緣陰影
diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index 4f2a87660c..d9b77dcc3f 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -292,6 +292,8 @@ pub struct PdfCraftApp {
     /// The reading-colours preference (Preferences ▸ Reading colours): applied to every open
     /// document, and documents open with it (Acrobat's Replace Document Colors).
     pub reading_colors: pdfcraft_render::ReadingColors,
+    /// App-wide page decoration only; never part of a PDF edit or render request.
+    pub show_page_edge_shadows: bool,
     /// The Linux portal is enabled only by the native host, and starts on the first System choice.
     #[cfg(target_os = "linux")]
     desktop_theme: Option<pdfcraft_platform::desktop_theme::DesktopTheme>,
diff --git a/crates/ui-egui/src/workflows/js_ui.rs b/crates/ui-egui/src/workflows/js_ui.rs
index b8f5d51cc6..c876992785 100644
--- a/crates/ui-egui/src/workflows/js_ui.rs
+++ b/crates/ui-egui/src/workflows/js_ui.rs
@@ -355,6 +355,10 @@ fn date_language_picker_name(l: &pdfcraft_engine::dates::DateLanguage, drawable:
 /// area; [`preferences_buttons`] goes below it, outside the scroll, so OK is always in reach.
 pub(crate) fn preferences_body(ui: &mut egui::Ui, app: &mut PdfCraftApp, t: &Tokens) {
     ui.label(egui::RichText::new(tl!("Preferences")).font(theme::semibold(18.0)));
+    ui.label(egui::RichText::new(tl!("Appearance")).font(theme::semibold(13.0)));
+    if ui.add(widgets::checkbox(&mut app.show_page_edge_shadows, tl!("Show Page Edge Shadows"))).changed() {
+        ui.ctx().request_repaint();
+    }
     ui.horizontal(|ui| {
         let label = ui.label(tl!("Interface language"));
         // A native name is only drawn when these fonts can draw it; otherwise the English name
diff --git a/crates/ui-egui/tests/it/control.rs b/crates/ui-egui/tests/it/control.rs
index e1a7e1f1db..2ca751f11a 100644
--- a/crates/ui-egui/tests/it/control.rs
+++ b/crates/ui-egui/tests/it/control.rs
@@ -140,6 +140,25 @@ fn thumbnail_size_is_settable_and_inspectable_through_the_control_channel() {
     assert!(ok(&mut h, &c, "ui.state", json!({}))["active"]["thumbnail_zoom"].as_f64().unwrap() > 0.75);
 }
 
+#[test]
+fn page_shadows_are_an_observable_app_wide_preference() {
+    let (mut h, c) = harness();
+    assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["show_page_edge_shadows"], true);
+    for value in ["false", "true"] {
+        ok(&mut h, &c, "ui.set", json!({ "key": "show_page_edge_shadows", "value": value }));
+        assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["show_page_edge_shadows"], value == "true");
+    }
+    for value in ["off", "1", "False", ""] {
+        assert!(call(&mut h, &c, "ui.set", json!({ "key": "show_page_edge_shadows", "value": value })).is_err());
+        assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["show_page_edge_shadows"], true);
+    }
+    ok(&mut h, &c, "ui.set", json!({ "key": "show_page_edge_shadows", "value": false }));
+    assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["show_page_edge_shadows"], false);
+    h.state_mut().active = None;
+    ok(&mut h, &c, "ui.set", json!({ "key": "show_page_edge_shadows", "value": "false" }));
+    assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["show_page_edge_shadows"], false);
+}
+
 #[test]
 fn control_resize_reports_observed_dimensions_and_rejects_invalid_sizes() {
     let (mut h, c) = harness();
diff --git a/crates/ui-egui/tests/page_shadows.rs b/crates/ui-egui/tests/page_shadows.rs
new file mode 100644
index 0000000000..a83fa6ce05
--- /dev/null
+++ b/crates/ui-egui/tests/page_shadows.rs
@@ -0,0 +1,353 @@
+//! Decorative page shadows are app preferences, never PDF edits.
+
+use egui_kittest::{Harness, kittest::Queryable};
+use pdfcraft_ui_egui::PdfCraftApp;
+
+#[test]
+fn viewer_shadows_follow_the_preference_without_moving_pages() {
+    for theme in ["light", "dark"] {
+        for layout in ["single", "two-page", "continuous", "two-up"] {
+            let mut h = harness(theme);
+            h.state_mut().set_option("layout", layout).unwrap();
+            h.run_steps(3);
+            let rectangles = h.state().views[0].visible_page_rects().to_vec();
+            let original = shadows(&h, false);
+            assert!(!original.is_empty(), "{theme} {layout}");
+            h.state_mut().set_option("show_page_edge_shadows", "false").unwrap();
+            h.run_steps(2);
+            assert!(shadows(&h, false).is_empty(), "{theme} {layout}");
+            assert_eq!(h.state().views[0].visible_page_rects(), rectangles);
+            h.state_mut().set_option("zoom", "125").unwrap();
+            h.state_mut().set_option("page", "2").unwrap();
+            h.run_steps(3);
+            assert!(shadows(&h, false).is_empty());
+            h.state_mut().set_option("show_page_edge_shadows", "true").unwrap();
+            h.run_steps(2);
+            assert!(!shadows(&h, false).is_empty());
+        }
+    }
+}
+
+#[test]
+fn viewport_fades_follow_the_preference_and_keep_other_scroll_areas_styled() {
+    for theme in ["light", "dark"] {
+        for organize in [false, true] {
+            let mut h = harness(theme);
+            if organize {
+                h.state_mut().set_option("organize", "on").unwrap();
+                // Make the three-page grid overflow vertically.
+                h.state_mut().set_option("grid-zoom", "300").unwrap();
+            }
+            h.run_steps(4);
+            let original_style = h.ctx.global_style().spacing.scroll.fade;
+            assert!(original_style.strength > 0.0);
+            assert!(!viewport_fades(&h).is_empty(), "bottom fade at start: {theme}, organize={organize}");
+            scroll_down(&mut h, 100.0);
+            let original = viewport_fades(&h);
+            let viewport = h.state().views[0].viewport_rect();
+            assert!(original.iter().any(|r| (r.top() - viewport.top()).abs() < 2.0), "top fade: {original:?}");
+            assert!(original.iter().any(|r| (r.bottom() - viewport.bottom()).abs() < 2.0), "bottom fade: {original:?}");
+            let pages = h.state().views[0].visible_page_rects().to_vec();
+            h.state_mut().set_option("show_page_edge_shadows", "false").unwrap();
+            h.run_steps(2);
+            assert!(viewport_fades(&h).is_empty(), "viewport fades remain: {theme}, organize={organize}");
+            assert_eq!(h.state().views[0].visible_page_rects(), pages);
+            assert_eq!(h.ctx.global_style().spacing.scroll.fade, original_style);
+            h.state_mut().set_option("show_page_edge_shadows", "true").unwrap();
+            h.run_steps(2);
+            assert_eq!(viewport_fades(&h), original);
+            scroll_down(&mut h, 100_000.0);
+            let at_end = viewport_fades(&h);
+            assert!(at_end.iter().any(|r| (r.top() - viewport.top()).abs() < 2.0));
+            assert!(!at_end.iter().any(|r| (r.bottom() - viewport.bottom()).abs() < 2.0), "no bottom fade at the end");
+        }
+    }
+}
+
+#[test]
+fn horizontal_viewport_fades_also_follow_the_preference() {
+    let mut h = harness("dark");
+    h.state_mut().set_option("zoom", "400").unwrap();
+    h.run_steps(4);
+    let viewport = h.state().views[0].viewport_rect();
+    let horizontal: Vec<_> = viewport_fades(&h).into_iter().filter(|r| r.width() <= 21.0).collect();
+    assert!(horizontal.iter().any(|r| (r.left() - viewport.left()).abs() < 2.0), "left fade: {horizontal:?}");
+    assert!(horizontal.iter().any(|r| (r.right() - viewport.right()).abs() < 2.0), "right fade: {horizontal:?}");
+    let pages = h.state().views[0].visible_page_rects().to_vec();
+    h.state_mut().set_option("show_page_edge_shadows", "false").unwrap();
+    h.run_steps(2);
+    assert!(viewport_fades(&h).is_empty());
+    assert_eq!(h.state().views[0].visible_page_rects(), pages);
+}
+
+fn scroll_down(h: &mut Harness<'static, PdfCraftApp>, points: f32) {
+    h.hover_at(h.state().views[0].viewport_rect().center());
+    h.run_steps(1);
+    h.event(egui::Event::MouseWheel {
+        unit: egui::MouseWheelUnit::Point,
+        delta: egui::vec2(0.0, -points),
+        phase: egui::TouchPhase::Move,
+        modifiers: egui::Modifiers::NONE,
+        source: egui::MouseWheelSource::Unknown,
+    });
+    h.run_steps(12);
+}
+
+/// Inspect the actual egui painter output: untextured four-vertex gradients
+/// with a transparent edge, spanning one dimension of the document viewport.
+fn viewport_fades(h: &Harness<'static, PdfCraftApp>) -> Vec<egui::Rect> {
+    let viewport = h.state().views[0].viewport_rect();
+    h.output()
+        .shapes
+        .iter()
+        .filter_map(|s| {
+            let egui::Shape::Mesh(mesh) = &s.shape else { return None };
+            if mesh.texture_id != egui::TextureId::default() || mesh.vertices.len() != 4 || mesh.indices.len() != 6 {
+                return None;
+            }
+            let rect = mesh.calc_bounds();
+            let transparent = mesh.vertices.iter().filter(|v| v.color == egui::Color32::TRANSPARENT).count();
+            (transparent == 2
+                && (((rect.width() - viewport.width()).abs() < 2.0 && rect.height() <= 21.0)
+                    || ((rect.height() - viewport.height()).abs() < 2.0 && rect.width() <= 21.0))
+                && rect.intersects(viewport))
+            .then_some(rect)
+        })
+        .collect()
+}
+
+#[test]
+fn organize_shadows_follow_the_preference() {
+    for theme in ["light", "dark"] {
+        let mut h = harness(theme);
+        h.state_mut().set_option("organize", "on").unwrap();
+        h.run_steps(3);
+        let original = shadows(&h, true);
+        assert_eq!(original.len(), 3);
+        h.state_mut().set_option("show_page_edge_shadows", "false").unwrap();
+        h.run_steps(2);
+        assert!(shadows(&h, true).is_empty());
+        h.state_mut().set_option("show_page_edge_shadows", "true").unwrap();
+        h.run_steps(2);
+        assert_eq!(shadows(&h, true), original);
+    }
+}
+
+#[test]
+fn checkbox_and_multiple_documents_do_not_edit_pdf_state() {
+    let mut h = harness("light");
+    h.state_mut().open_bytes("second.pdf", None, pdf()).unwrap();
+    let ids: Vec<_> = h.state().views.iter().map(|v| v.id).collect();
+    h.state_mut().session.apply(ids[0], pdfcraft_engine::Edit::SetInfo { key: "Title".into(), value: "Keep existing edits".into() }).unwrap();
+    assert!(h.state().session.get(ids[0]).unwrap().dirty);
+    assert!(h.state().session.get(ids[0]).unwrap().can_undo().is_some());
+    let saved: Vec<_> = ids.iter().map(|id| h.state_mut().session.save_bytes(*id).unwrap()).collect();
+    let before: Vec<_> = h
+        .state()
+        .views
+        .iter()
+        .map(|v| {
+            let d = h.state().session.get(v.id).unwrap();
+            (
+                d.bytes.clone(),
+                d.dirty,
+                d.can_undo().map(str::to_owned),
+                d.can_redo().map(str::to_owned),
+                d.info.pages.iter().map(|p| (p.width, p.height, p.rotation)).collect::<Vec<_>>(),
+            )
+        })
+        .collect();
+    h.state_mut().set_option("dialog", "preferences").unwrap();
+    h.run_steps(3);
+    let checkbox = h.get_by_label("Show Page Edge Shadows");
+    checkbox.click();
+    h.run_steps(2);
+    assert_eq!(serde_json::from_str::<serde_json::Value>(&h.state().persist()).unwrap()["show_page_edge_shadows"], false);
+    h.get_by_label("Show Page Edge Shadows").focus();
+    h.key_press(egui::Key::Space);
+    h.run_steps(2);
+    assert_eq!(serde_json::from_str::<serde_json::Value>(&h.state().persist()).unwrap()["show_page_edge_shadows"], true);
+    let dialog_shadow = h.ctx.global_style().visuals.window_shadow;
+    assert_ne!(dialog_shadow, egui::Shadow::NONE);
+    h.state_mut().set_option("show_page_edge_shadows", "false").unwrap();
+    h.run_steps(2);
+    assert_eq!(h.ctx.global_style().visuals.window_shadow, dialog_shadow);
+    h.state_mut().set_option("dialog", "none").unwrap();
+    for tab in [0, 1] {
+        h.state_mut().active = Some(tab);
+        h.run_steps(2);
+        assert!(shadows(&h, false).is_empty());
+        let d = h.state().session.get(h.state().views[tab].id).unwrap();
+        assert_eq!(
+            (&d.bytes, d.dirty, d.can_undo(), d.can_redo()),
+            (&before[tab].0, before[tab].1, before[tab].2.as_deref(), before[tab].3.as_deref())
+        );
+        assert_eq!(d.info.pages.iter().map(|p| (p.width, p.height, p.rotation)).collect::<Vec<_>>(), before[tab].4);
+    }
+    for (id, bytes) in ids.iter().zip(&saved) {
+        assert_eq!(h.state_mut().session.save_bytes(*id).unwrap(), *bytes);
+    }
+    h.state_mut().open_bytes("new.pdf", None, pdf()).unwrap();
+    h.run_steps(2);
+    assert!(shadows(&h, false).is_empty());
+}
+
+#[test]
+fn rendered_page_content_is_identical_with_and_without_decoration() {
+    let mut h = harness("dark");
+    h.state_mut().set_option("panel", "pages").unwrap();
+    h.state_mut().set_option("zoom", "175").unwrap();
+    h.run_steps(3);
+    scroll_down(&mut h, 20.0);
+    for _ in 0..400 {
+        h.run_steps(2);
+        if !h.state().render_pending() {
+            break;
+        }
+        std::thread::sleep(std::time::Duration::from_millis(5));
+    }
+    assert!(!h.state().render_pending(), "the actual PDF raster must be ready");
+    let rect = h.state().views[0].page_screen_rect(0).unwrap();
+    let fades = viewport_fades(&h);
+    assert_eq!(fades.iter().filter(|r| r.height() <= 21.0).count(), 2, "the screenshot comparison must contain both vertical fades");
+    let enabled = h.render().unwrap();
+    h.state_mut().set_option("show_page_edge_shadows", "false").unwrap();
+    h.run_steps(2);
+    let disabled = h.render().unwrap();
+    assert_eq!(h.state().views[0].page_screen_rect(0), Some(rect));
+    let viewport = h.state().views[0].viewport_rect();
+    assert!(viewport_fades(&h).is_empty());
+    // Only the painter's actual decorative fade strips may change over the page.
+    // All remaining artwork, annotation and form pixels must be identical.
+    for (_, page) in h.state().views[0].visible_page_rects() {
+        let visible = page.intersect(viewport).shrink(2.0);
+        if !visible.is_positive() {
+            continue;
+        }
+        for y in visible.top().ceil() as u32..visible.bottom().floor() as u32 {
+            for x in visible.left().ceil() as u32..visible.right().floor() as u32 {
+                if !fades.iter().any(|fade| fade.expand(1.0).contains(egui::pos2(x as f32, y as f32))) {
+                    assert_eq!(enabled.get_pixel(x, y), disabled.get_pixel(x, y), "page content at {x},{y}");
+                }
+            }
+        }
+    }
+    // The top overlaps the first page's blue artwork; the bottom overlaps the
+    // blank second page. Sample clear of the unchanged scrollbar at the edge.
+    let x = rect.intersect(viewport).center().x as u32;
+    for (y, expected) in [(viewport.top() + 8.0, [204, 230, 255, 255]), (viewport.bottom() - 10.0, [255, 255, 255, 255])] {
+        assert_eq!(disabled.get_pixel(x, y as u32).0, expected, "unobscured PDF at y={y}");
+        assert_ne!(enabled.get_pixel(x, y as u32).0, expected, "fade overlays the PDF at y={y}");
+    }
+    // The Pages sidebar, including its thumbnails and selection borders, is unaffected.
+    for y in 0..enabled.height() {
+        for x in (0..viewport.left().floor() as u32).chain(viewport.right().ceil() as u32..enabled.width()) {
+            assert_eq!(enabled.get_pixel(x, y), disabled.get_pixel(x, y), "sidebar at {x},{y}");
+        }
+    }
+    assert_ne!(enabled.as_raw(), disabled.as_raw(), "the decoration really changes the image");
+    if let Ok(directory) = std::env::var("PDFCRAFT_SHADOW_SCREENSHOTS") {
+        enabled.save(format!("{directory}/page-shadows-enabled.png")).unwrap();
+        disabled.save(format!("{directory}/page-shadows-disabled.png")).unwrap();
+    }
+}
+
+fn harness(theme: &str) -> Harness<'static, PdfCraftApp> {
+    let theme = theme.to_string();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_| {
+        let mut app = PdfCraftApp::new();
+        // Save comparisons must not depend on crossing a /ModDate second boundary.
+        app.session = app.session.with_clock(|| 1_700_000_000);
+        app.set_option("language", "en").unwrap();
+        app.set_option("theme", &theme).unwrap();
+        app.open_bytes("pages.pdf", None, pdf()).unwrap();
+        app.set_option("zoom", "100").unwrap();
+        app
+    });
+    h.run_steps(3);
+    h
+}
+
+fn shadows(h: &Harness<'static, PdfCraftApp>, grid: bool) -> Vec<egui::Rect> {
+    let color = pdfcraft_ui_egui::theme::Tokens::for_kind(h.state().theme).page_shadow;
+    fn collect(shape: &egui::Shape, color: egui::Color32, grid: bool, out: &mut Vec<egui::Rect>) {
+        match shape {
+            egui::Shape::Vec(shapes) => {
+                for s in shapes {
+                    collect(s, color, grid, out);
+                }
+            }
+            egui::Shape::Rect(r)
+                if r.fill == color
+                    && r.rect.width() > 20.0
+                    && r.rect.height() > 20.0
+                    && if grid {
+                        r.blur_width == 0.0 && r.corner_radius == egui::CornerRadius::same(1)
+                    } else {
+                        r.blur_width == 14.0 && r.corner_radius == egui::CornerRadius::ZERO
+                    } =>
+            {
+                out.push(r.rect)
+            }
+            _ => {}
+        }
+    }
+    let mut out = Vec::new();
+    for s in &h.output().shapes {
+        collect(&s.shape, color, grid, &mut out);
+    }
+    out
+}
+
+/// Synthetic pages include colored artwork, an annotation and a form field.
+fn pdf() -> Vec<u8> {
+    let objects = [
+        "<< /Type /Catalog /Pages 2 0 R /AcroForm << /Fields [7 0 R] >> >>".to_string(),
+        "<< /Type /Pages /Kids [3 0 R 4 0 R 5 0 R] /Count 3 /MediaBox [0 0 300 400] >>".to_string(),
+        "<< /Type /Page /Parent 2 0 R /Contents 8 0 R /Annots [6 0 R 7 0 R] >>".to_string(),
+        "<< /Type /Page /Parent 2 0 R >>".to_string(),
+        "<< /Type /Page /Parent 2 0 R >>".to_string(),
+        "<< /Type /Annot /Subtype /Text /Rect [20 20 40 40] /Contents (Note) >>".to_string(),
+        "<< /Type /Annot /Subtype /Widget /FT /Tx /T (field) /V (value) /Rect [50 50 100 70] /P 3 0 R >>".to_string(),
+        {
+            let body = "0.8 0.9 1 rg 0 0 300 400 re f 0.3 g 10 10 280 8 re f";
+            format!("<< /Length {} >>\nstream\n{body}\nendstream", body.len())
+        },
+    ];
+    let mut bytes = b"%PDF-1.7\n".to_vec();
+    let mut offsets = Vec::new();
+    for (i, object) in objects.iter().enumerate() {
+        offsets.push(bytes.len());
+        bytes.extend_from_slice(format!("{} 0 obj\n{object}\nendobj\n", i + 1).as_bytes());
+    }
+    let xref = bytes.len();
+    bytes.extend_from_slice(format!("xref\n0 {}\n0000000000 65535 f \n", objects.len() + 1).as_bytes());
+    for offset in offsets {
+        bytes.extend_from_slice(format!("{offset:010} 00000 n \n").as_bytes());
+    }
+    bytes.extend_from_slice(format!("trailer\n<< /Size {} /Root 1 0 R >>\nstartxref\n{xref}\n%%EOF\n", objects.len() + 1).as_bytes());
+    bytes
+}
+
+#[test]
+fn page_shadow_preference_round_trips_and_ignores_invalid_settings() {
+    let mut app = PdfCraftApp::new();
+    let enabled = |app: &PdfCraftApp| serde_json::from_str::<serde_json::Value>(&app.persist()).unwrap()["show_page_edge_shadows"].clone();
+    assert_eq!(enabled(&app), true);
+    app.restore("{}");
+    assert_eq!(enabled(&app), true);
+    for value in [false, true] {
+        app.set_option("show_page_edge_shadows", if value { "true" } else { "false" }).unwrap();
+        let mut restored = PdfCraftApp::new();
+        restored.restore(&app.persist());
+        assert_eq!(enabled(&restored), value);
+    }
+    for invalid in ["null", "0", "\"false\"", "[]", "{}"] {
+        app.restore(&format!("{{\"show_page_edge_shadows\":{invalid}}}"));
+        assert_eq!(enabled(&app), true);
+    }
+    app.restore("not json");
+    assert_eq!(enabled(&app), true);
+    assert!(app.set_option("show_page_edge_shadows", "maybe").is_err());
+    assert_eq!(enabled(&app), true);
+}
diff --git a/docs/roadmap.md b/docs/roadmap.md
index e3987182e2..4319796163 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -290,6 +290,7 @@ Estimates unchanged.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-31 | patch | #1577: reconcile optional page shadows with current viewer/organizer and settings modules; CI validation pending. |
 | 2026-10-31 | patch | M3 #1354: reconcile the launch override with split app/file modules and the structured open result; preserve headless help/version exits. CI validation pending. |
 | 2026-10-31 | patch | M2, PR #4172: eight GBK font/alias cases compare exact pixels with independent installed-face and explicit-Unicode references; wrong-glyph and wrong-family negative controls fail. Estimates unchanged. |
 | 2026-10-31 | patch | M2, PR #4172: integrate main fa5f9f8c, preserve both raster test groups and restore explicit display_config imports; display-only CJK policy and estimates unchanged. |
diff --git a/parity/acrobat-features.toml b/parity/acrobat-features.toml
index 9abb4e379c..18498399c9 100644
--- a/parity/acrobat-features.toml
+++ b/parity/acrobat-features.toml
@@ -9928,8 +9928,8 @@ milestone = "M14"
 status = "partial"
 commands = []
 tools = []
-evidence = ["crates/ui-egui/tests/it/view.rs::default_page_display_is_used_for_new_documents", "crates/ui-egui/tests/it/view.rs::default_zoom_is_used_for_new_documents", "crates/ui-egui/tests/it/view.rs::preferences_set_the_default_zoom", "crates/ui-egui/tests/it/view.rs::always_use_my_default_zoom_and_page_layout_ignores_what_the_pdf_asks_for"]
-notes = "Preferences ▸ Documents and view: Default page display and Default zoom (Fit to width, Zoom to page level or a percentage) for every new tab; a PDF that asks for a layout or zoom gets it, unless Always use my default zoom and page layout is on. Missing: Acrobat's resolution, rendering and page-content options"
+evidence = ["crates/ui-egui/tests/page_shadows.rs::viewport_fades_follow_the_preference_and_keep_other_scroll_areas_styled", "crates/ui-egui/tests/page_shadows.rs::rendered_page_content_is_identical_with_and_without_decoration", "crates/ui-egui/tests/page_shadows.rs::page_shadow_preference_round_trips_and_ignores_invalid_settings", "crates/ui-egui/tests/page_shadows.rs::viewer_shadows_follow_the_preference_without_moving_pages", "crates/ui-egui/tests/page_shadows.rs::organize_shadows_follow_the_preference", "crates/ui-egui/tests/it/control.rs::page_shadows_are_an_observable_app_wide_preference", "crates/ui-egui/tests/it/view.rs::default_page_display_is_used_for_new_documents", "crates/ui-egui/tests/it/view.rs::default_zoom_is_used_for_new_documents", "crates/ui-egui/tests/it/view.rs::preferences_set_the_default_zoom", "crates/ui-egui/tests/it/view.rs::always_use_my_default_zoom_and_page_layout_ignores_what_the_pdf_asks_for"]
+notes = "Preferences ▸ Documents and view: Default page display and Default zoom (Fit to width, Zoom to page level or a percentage) for every new tab; a PDF that asks for a layout or zoom gets it, unless Always use my default zoom and page layout is on. Preferences ▸ Appearance also has an app-wide, persistent Show Page Edge Shadows checkbox (on by default), exposed through ui.set and ui.state; it affects viewer and Organize decorations, including the viewport-edge gradients painted over pages, only. Missing: Acrobat's resolution, rendering and page-content options"
 
 [[feature]]
 id = "misc.prefs-documents"