diff --git a/src/static_src/scss/_card-deck.scss b/src/static_src/scss/_card-deck.scss
index 1cb0fee..568456b 100644
--- a/src/static_src/scss/_card-deck.scss
+++ b/src/static_src/scss/_card-deck.scss
@@ -914,9 +914,17 @@ html:has(.sig-backdrop) {
 // same polarity-themed colour rules apply to the standalone Game Sign picker.
 // data-polarity lives on the page wrapper (not on .my-sign-stage) so descendant
 // `.sig-card` (in the grid, sibling to the stage) inherits the rules.
+// NOTE: `.my-sea-page[data-polarity="..."]` deliberately NOT in this shared
+// selector list (was bitten 2026-05-21 by drawn-card stage bleed). My-sea's
+// drawn cards open into the `.sea-stage` modal whose `.sig-stage-card.sea-
+// stage-card` element has BOTH classes — so a `.my-sea-page[data-polarity]
+// .sig-stage-card` rule (0,3,0) silently overrides the proper card-specific
+// `.sea-stage--levity/--gravity .sea-stage-card` polarity (0,2,0), forcing
+// every drawn card's stage to inherit the user's sig polarity. My-sea's own
+// page polarity rules live below + target ONLY `.sea-sig-card` (the spread-
+// center sig). See [[feedback-page-polarity-scope-trap]].
 .sig-overlay[data-polarity="levity"],
-.my-sign-page[data-polarity="levity"],
-.my-sea-page[data-polarity="levity"] {
+.my-sign-page[data-polarity="levity"] {
     // Mini card: inverted palette. game-kit sets explicit colours on .fan-card-name
     // and .fan-card-corner that out-specifc the parent color, so re-target them here.
     .sig-card {
@@ -970,8 +978,7 @@ html:has(.sig-backdrop) {
     // Cursor colours live in .sig-cursor-float[data-role] rules (portal elements)
 }
 .sig-overlay[data-polarity="gravity"],
-.my-sign-page[data-polarity="gravity"],
-.my-sea-page[data-polarity="gravity"] {
+.my-sign-page[data-polarity="gravity"] {
     // Stat block: invert priUser/secUser so gravity gets the same stark contrast as leavened cards
     .sig-stat-block {
         background: rgba(var(--secUser), 0.75);
@@ -1004,6 +1011,25 @@ html:has(.sig-backdrop) {
     // Cursor colours live in .sig-cursor-float[data-role] rules (portal elements)
 }
 
+// ── My-sea page polarity: scoped to `.sea-sig-card` only ──────────────────────
+// The user's chosen sig (rendered as `.sig-stage-card.sea-sig-card` in the
+// spread-center cell) is the ONLY element on my-sea whose colours track the
+// page-level `data-polarity` (= `User.significator_reversed`). Drawn cards
+// belong to their own polarity from the deck-stack they were pulled from +
+// must NOT inherit the user's sig polarity — see big NOTE above the shared
+// `.sig-overlay`/`.my-sign-page` block for the bleed trap that prompted this
+// scoping (2026-05-21 bug).
+//
+// Gravity is the default rendering (`.sig-stage-card.sea-sig-card` base rule
+// sets `background: --priUser, color: --secUser` at `_card-deck.scss:1379`)
+// so we only need an override for the LEVITY case here — same idea as the
+// `.sig-overlay[data-polarity="levity"] .sig-stage-card` block above.
+.my-sea-page[data-polarity="levity"] .sig-stage-card.sea-sig-card {
+    background: rgba(var(--secUser), 1);
+    border-color: rgba(var(--priUser), 0.6);
+    color: rgba(var(--priUser), 1);  // currentColor propagates to .fan-corner-rank + i
+}
+
 // ─── Sig select: landscape overrides ─────────────────────────────────────────
 // Cascade (each step is a SUPERSET of the prior):
 //   narrow landscape         → 6 cols × 2.5rem, row layout (stage beside grid)