diff --git a/Assets/Scripts/Mechanics/PlayerController.cs b/Assets/Scripts/Mechanics/PlayerController.cs
index 8bc7153..ebd0c06 100644
--- a/Assets/Scripts/Mechanics/PlayerController.cs
+++ b/Assets/Scripts/Mechanics/PlayerController.cs
@@ -251,10 +251,18 @@ namespace Platformer.Mechanics
             bool standingOnPlatform = false;
             if (collider2d != null && !isJumpingThrough)
             {
-                Vector2 footPos = new Vector2(collider2d.bounds.center.x, collider2d.bounds.min.y + 0.02f);
+                // BT73 — footHit Raycast 3점 (좌·중·우) (PD 보고 2026-05-08: 발판 가장자리 jitter)
+                //         단일 중앙 Raycast 시 가장자리 영역 검출 X·검출 O frame 교차 → 밀려남
+                //         좌·중·우 3점 어느 하나라도 검출 시 standingOnPlatform=true → 안정
+                float footY = collider2d.bounds.min.y + 0.02f;
+                float boundsLeft = collider2d.bounds.min.x + 0.02f;
+                float boundsCenter = collider2d.bounds.center.x;
+                float boundsRight = collider2d.bounds.max.x - 0.02f;
                 int jumpThroughMask = 1 << JUMP_THROUGH_LAYER;
-                RaycastHit2D footHit = Physics2D.Raycast(footPos, Vector2.down, 0.1f, jumpThroughMask);
-                standingOnPlatform = footHit.collider != null;
+                RaycastHit2D footHitC = Physics2D.Raycast(new Vector2(boundsCenter, footY), Vector2.down, 0.1f, jumpThroughMask);
+                RaycastHit2D footHitL = Physics2D.Raycast(new Vector2(boundsLeft, footY), Vector2.down, 0.1f, jumpThroughMask);
+                RaycastHit2D footHitR = Physics2D.Raycast(new Vector2(boundsRight, footY), Vector2.down, 0.1f, jumpThroughMask);
+                standingOnPlatform = footHitC.collider != null || footHitL.collider != null || footHitR.collider != null;
             }
 
             // standingOnPlatform=true → Layer 16 ON (착지·서있는 영역 영역 X) / 그 외 → Layer 16 OFF (통과)