diff --git a/crates/op-editor-ui/src/widgets/mod.rs b/crates/op-editor-ui/src/widgets/mod.rs
index b722af940..149b45ed1 100644
--- a/crates/op-editor-ui/src/widgets/mod.rs
+++ b/crates/op-editor-ui/src/widgets/mod.rs
@@ -42,6 +42,7 @@ mod layer_panel_tests;
 mod layer_panel_walkers;
 pub mod property_panel;
 pub mod property_panel_code;
+pub mod property_panel_effects;
 pub mod property_panel_fill;
 pub mod property_panel_inputs;
 pub mod property_panel_layout;
diff --git a/crates/op-editor-ui/src/widgets/property_panel_effects.rs b/crates/op-editor-ui/src/widgets/property_panel_effects.rs
new file mode 100644
index 000000000..e0e69cca5
--- /dev/null
+++ b/crates/op-editor-ui/src/widgets/property_panel_effects.rs
@@ -0,0 +1,128 @@
+//! Effects-section paint helpers for [`crate::widgets::PropertyPanel`].
+//! Split out of `property_panel_sections.rs` to honor the 800-line
+//! file ceiling. Each effect block paints a type row plus one
+//! parameter row per editable scalar field.
+
+use crate::theme::Theme;
+use crate::widgets::icons::{draw_icon, Icon};
+use crate::widgets::property_panel::EffectSummary;
+use crate::widgets::property_panel_inputs::{
+    paint_section_divider, paint_section_label_with_add, to_jian_color, INPUT_HEIGHT, PAD_X,
+    SECTION_GAP,
+};
+use crate::widgets::property_panel_layout::{
+    effect_param_fields, EFFECT_PARAM_ROW_HEIGHT, EFFECT_ROW_HEIGHT,
+};
+use crate::widgets::property_panel_sections::PropertyLabels;
+use crate::widgets::PaintCx;
+use crate::{Point2D, Rect, TextLayout};
+
+// ── Effects section ───────────────────────────────────────────────
+
+pub fn paint_effects_section(
+    cx: &mut PaintCx<'_>,
+    theme: &Theme,
+    labels: &PropertyLabels,
+    effects: &[EffectSummary],
+    x: f32,
+    y: f32,
+    width: f32,
+) -> f32 {
+    let mut row_y = paint_section_label_with_add(cx, theme, labels.effects, x, y, width);
+    if effects.is_empty() {
+        row_y += 8.0;
+    } else {
+        for eff in effects {
+            paint_effect_row(cx, theme, eff, x, row_y, width);
+            row_y += EFFECT_ROW_HEIGHT;
+            for &(field, label) in effect_param_fields(eff.kind) {
+                paint_effect_param_row(cx, theme, label, eff.param_value(field), x, row_y, width);
+                row_y += EFFECT_PARAM_ROW_HEIGHT;
+            }
+        }
+    }
+    paint_section_divider(cx, theme, x, row_y, width);
+    row_y + SECTION_GAP
+}
+
+/// Paint one effect-parameter row: `<label>  <value>  [−] [+]`. The
+/// "−"/"+" stepper rects must match `action_button_rects`'s
+/// `AdjustEffectParam` rects exactly so paint + hit-test agree.
+fn paint_effect_param_row(
+    cx: &mut PaintCx<'_>,
+    theme: &Theme,
+    label: &str,
+    value: f32,
+    x: f32,
+    y: f32,
+    width: f32,
+) {
+    let label_layout = TextLayout::single_run(
+        label,
+        "system-ui",
+        11.0,
+        to_jian_color(theme.muted_foreground),
+        Point2D::new(0.0, 0.0),
+    );
+    cx.backend
+        .draw_text(&label_layout, Point2D::new(x + PAD_X + 4.0, y + 15.0));
+    let value_text = format!("{value:.0}");
+    let value_layout = TextLayout::single_run(
+        &value_text,
+        "system-ui",
+        12.0,
+        to_jian_color(theme.foreground),
+        Point2D::new(0.0, 0.0),
+    );
+    cx.backend.draw_text(
+        &value_layout,
+        Point2D::new(x + width - PAD_X - 78.0, y + 15.0),
+    );
+    // "−" then "+" — geometry mirrors the `AdjustEffectParam` rects.
+    for (icon, off) in [(Icon::Minus, 48.0_f32), (Icon::Plus, 22.0_f32)] {
+        let r = Rect {
+            origin: Point2D::new(x + width - PAD_X - off, y + 3.0),
+            size: Point2D::new(22.0, INPUT_HEIGHT - 6.0),
+        };
+        cx.backend.fill_round_rect(r, 6.0, theme.muted);
+        draw_icon(
+            cx.backend,
+            icon,
+            Point2D::new(r.origin.x + 5.0, r.origin.y + (r.size.y - 12.0) / 2.0),
+            12.0,
+            theme.foreground,
+            1.4,
+        );
+    }
+}
+
+/// Paint one effect row — the effect-type label on the left + a
+/// right-aligned "✕" remove glyph. The "✕" hit rect is emitted by
+/// `action_button_rects` as `RemoveEffect(index)`, so the glyph
+/// position here must match that rect.
+fn paint_effect_row(
+    cx: &mut PaintCx<'_>,
+    theme: &Theme,
+    eff: &EffectSummary,
+    x: f32,
+    y: f32,
+    width: f32,
+) {
+    let label = TextLayout::single_run(
+        eff.kind.label(),
+        "system-ui",
+        12.0,
+        to_jian_color(theme.foreground),
+        Point2D::new(0.0, 0.0),
+    );
+    cx.backend
+        .draw_text(&label, Point2D::new(x + PAD_X, y + 15.0));
+    draw_icon(
+        cx.backend,
+        Icon::Close,
+        Point2D::new(x + width - PAD_X - 14.0, y + 3.0),
+        14.0,
+        theme.muted_foreground,
+        1.4,
+    );
+}
diff --git a/crates/op-editor-ui/src/widgets/property_panel_sections.rs b/crates/op-editor-ui/src/widgets/property_panel_sections.rs
index 29d48ef4b..be1dc8110 100644
--- a/crates/op-editor-ui/src/widgets/property_panel_sections.rs
+++ b/crates/op-editor-ui/src/widgets/property_panel_sections.rs
@@ -5,15 +5,12 @@
 
 use crate::theme::Theme;
 use crate::widgets::icons::{draw_icon, Icon};
-use crate::widgets::property_panel::{EffectSummary, NodeSnapshot};
+use crate::widgets::property_panel::NodeSnapshot;
 use crate::widgets::property_panel_inputs::{
     format_color_hex, paint_dropdown, paint_input_with_icon_focused,
     paint_input_with_prefix_focused, paint_input_with_suffix_focused, paint_section_divider,
-    paint_section_label, paint_section_label_with_add, to_jian_color, HEADER_HEIGHT, INPUT_HEIGHT,
-    INPUT_RADIUS, PAD_X, SECTION_GAP, TAB_HEIGHT,
-};
-use crate::widgets::property_panel_layout::{
-    effect_param_fields, EFFECT_PARAM_ROW_HEIGHT, EFFECT_ROW_HEIGHT,
+    paint_section_label, to_jian_color, HEADER_HEIGHT, INPUT_HEIGHT, INPUT_RADIUS, PAD_X,
+    SECTION_GAP, TAB_HEIGHT,
 };
 use crate::widgets::PaintCx;
 use crate::{Color, Point2D, Rect, TextLayout};
@@ -21,6 +18,7 @@ use op_editor_core::PropertyFocus;
 
 // Re-exports — fill paint moved to `property_panel_fill.rs`,
 // layout walkers + visibility flags to `property_panel_layout.rs`.
+pub use crate::widgets::property_panel_effects::paint_effects_section;
 pub use crate::widgets::property_panel_fill::{
     fill_type_label, paint_fill_section, paint_fill_type_picker,
 };
@@ -695,114 +693,9 @@ pub fn paint_stroke_section(
 }
 
 // ── Effects section ───────────────────────────────────────────────
-
-pub fn paint_effects_section(
-    cx: &mut PaintCx<'_>,
-    theme: &Theme,
-    labels: &PropertyLabels,
-    effects: &[EffectSummary],
-    x: f32,
-    y: f32,
-    width: f32,
-) -> f32 {
-    let mut row_y = paint_section_label_with_add(cx, theme, labels.effects, x, y, width);
-    if effects.is_empty() {
-        row_y += 8.0;
-    } else {
-        for eff in effects {
-            paint_effect_row(cx, theme, eff, x, row_y, width);
-            row_y += EFFECT_ROW_HEIGHT;
-            for &(field, label) in effect_param_fields(eff.kind) {
-                paint_effect_param_row(cx, theme, label, eff.param_value(field), x, row_y, width);
-                row_y += EFFECT_PARAM_ROW_HEIGHT;
-            }
-        }
-    }
-    paint_section_divider(cx, theme, x, row_y, width);
-    row_y + SECTION_GAP
-}
-
-/// Paint one effect-parameter row: `<label>  <value>  [−] [+]`. The
-/// "−"/"+" stepper rects must match `action_button_rects`'s
-/// `AdjustEffectParam` rects exactly so paint + hit-test agree.
-fn paint_effect_param_row(
-    cx: &mut PaintCx<'_>,
-    theme: &Theme,
-    label: &str,
-    value: f32,
-    x: f32,
-    y: f32,
-    width: f32,
-) {
-    let label_layout = TextLayout::single_run(
-        label,
-        "system-ui",
-        11.0,
-        to_jian_color(theme.muted_foreground),
-        Point2D::new(0.0, 0.0),
-    );
-    cx.backend
-        .draw_text(&label_layout, Point2D::new(x + PAD_X + 4.0, y + 15.0));
-    let value_text = format!("{value:.0}");
-    let value_layout = TextLayout::single_run(
-        &value_text,
-        "system-ui",
-        12.0,
-        to_jian_color(theme.foreground),
-        Point2D::new(0.0, 0.0),
-    );
-    cx.backend.draw_text(
-        &value_layout,
-        Point2D::new(x + width - PAD_X - 78.0, y + 15.0),
-    );
-    // "−" then "+" — geometry mirrors the `AdjustEffectParam` rects.
-    for (icon, off) in [(Icon::Minus, 48.0_f32), (Icon::Plus, 22.0_f32)] {
-        let r = Rect {
-            origin: Point2D::new(x + width - PAD_X - off, y + 3.0),
-            size: Point2D::new(22.0, INPUT_HEIGHT - 6.0),
-        };
-        cx.backend.fill_round_rect(r, 6.0, theme.muted);
-        draw_icon(
-            cx.backend,
-            icon,
-            Point2D::new(r.origin.x + 5.0, r.origin.y + (r.size.y - 12.0) / 2.0),
-            12.0,
-            theme.foreground,
-            1.4,
-        );
-    }
-}
-
-/// Paint one effect row — the effect-type label on the left + a
-/// right-aligned "✕" remove glyph. The "✕" hit rect is emitted by
-/// `action_button_rects` as `RemoveEffect(index)`, so the glyph
-/// position here must match that rect.
-fn paint_effect_row(
-    cx: &mut PaintCx<'_>,
-    theme: &Theme,
-    eff: &EffectSummary,
-    x: f32,
-    y: f32,
-    width: f32,
-) {
-    let label = TextLayout::single_run(
-        eff.kind.label(),
-        "system-ui",
-        12.0,
-        to_jian_color(theme.foreground),
-        Point2D::new(0.0, 0.0),
-    );
-    cx.backend
-        .draw_text(&label, Point2D::new(x + PAD_X, y + 15.0));
-    draw_icon(
-        cx.backend,
-        Icon::Close,
-        Point2D::new(x + width - PAD_X - 14.0, y + 3.0),
-        14.0,
-        theme.muted_foreground,
-        1.4,
-    );
-}
+// `paint_effects_section` + its row helpers live in
+// `property_panel_effects.rs` (split out at the 800-line cap);
+// re-exported below so callers keep using `sections::*`.
 
 // ── Export section ────────────────────────────────────────────────