diff --git a/star-raid/js/boss_art.js b/star-raid/js/boss_art.js
index b3ae790..7751b4f 100644
--- a/star-raid/js/boss_art.js
+++ b/star-raid/js/boss_art.js
@@ -45,9 +45,9 @@ function drawPiano(b,t,fl,split){
      circ(px2,2,5.5,"#5a1a1a");circ(px2-1.5,0,2.5,"#8a2a2a");
      px(px2-1.5,4,3,8,"#1b2434");
      px(px2-1,10,2,3,"#ff3355");
-     // 大激光蓄力/消退圆环：蓄力期(1-60)逐渐变大，消退期(61-360)保持最大，最后回0消失
+     // 大激光蓄力圆环：仅在蓄力阶段(1-59)显示，消退期不显示
      const raw=sd<0?(b.pedLasL||0):(b.pedLasR||0);
-     if(raw>0){const a=Math.min(raw/60,1);
+     if(raw>0&&raw<60){const a=raw/60;
        ctx.globalAlpha=0.3+0.55*a;ctx.strokeStyle="#ff3355";ctx.lineWidth=1.5;
        ctx.beginPath();ctx.arc(px2,14,2+3.5*a,0,TAU);ctx.stroke();
        ctx.globalAlpha=0.22*a;ctx.fillStyle="#ff3355";
diff --git a/star-raid/js/enemies.js b/star-raid/js/enemies.js
index 15352a3..4d05471 100644
--- a/star-raid/js/enemies.js
+++ b/star-raid/js/enemies.js
@@ -350,32 +350,26 @@ function updateBoss(){
     }
   }
   const lck=(b.laserT||0)>0;   // 巨宽核心激光期间压制其他攻击
-  // 钢琴：大炮塔惩罚激光——三态：蓄力(1-60)→发射→消退(61-360)→空闲(0)
+  // 钢琴：大炮塔惩罚激光——蓄力与消退分离：蓄力pedLasL(0-60) + 消退pedLasLCd(300→0)
   if(b.idx===4&&!lck){
     const off0=b.phase>=1?16:0,p=G.p;
     const leftX=b.x-(112+off0),rightX=b.x+(112+off0);
-    // 左炮
-    const l=b.pedLasL||0;
-    if(l===0&&p.dead<=0&&Math.abs(p.x-leftX)<14){
-      b.pedLasL=1;
-    }else if(l>0&&l<60){
-      if(p.dead<=0&&Math.abs(p.x-leftX)<14)b.pedLasL=l+1;
-      else b.pedLasL=Math.max(0,l-1);
-      if(b.pedLasL>=60){bossBeam(leftX,b.y+10,leftX,H+8,14,"#ff3355",10,40,99999,{b,ox:-(112+off0),oy:10,followX2:true});b.pedLasL=360;SFX.warn();}
-    }else if(l>=60){
-      b.pedLasL=l-1;
-    }
+    // 左炮：消退倒计时优先
+    if((b.pedLasLCd||0)>0){b.pedLasLCd=b.pedLasLCd-1;}
+    else{const l=b.pedLasL||0;
+      if(l===0&&p.dead<=0&&Math.abs(p.x-leftX)<14){b.pedLasL=1;}
+      else if(l>0&&l<60){
+        if(p.dead<=0&&Math.abs(p.x-leftX)<14)b.pedLasL=l+1;
+        else b.pedLasL=Math.max(0,l-1);
+        if(b.pedLasL>=60){bossBeam(leftX,b.y+10,leftX,H+8,14,"#ff3355",10,40,99999,{b,ox:-(112+off0),oy:10,followX2:true});b.pedLasL=0;b.pedLasLCd=300;SFX.warn();}}}
     // 右炮
-    const r=b.pedLasR||0;
-    if(r===0&&p.dead<=0&&Math.abs(p.x-rightX)<14){
-      b.pedLasR=1;
-    }else if(r>0&&r<60){
-      if(p.dead<=0&&Math.abs(p.x-rightX)<14)b.pedLasR=r+1;
-      else b.pedLasR=Math.max(0,r-1);
-      if(b.pedLasR>=60){bossBeam(rightX,b.y+10,rightX,H+8,14,"#ff3355",10,40,99999,{b,ox:(112+off0),oy:10,followX2:true});b.pedLasR=360;SFX.warn();}
-    }else if(r>=60){
-      b.pedLasR=r-1;
-    }
+    if((b.pedLasRCd||0)>0){b.pedLasRCd=b.pedLasRCd-1;}
+    else{const r=b.pedLasR||0;
+      if(r===0&&p.dead<=0&&Math.abs(p.x-rightX)<14){b.pedLasR=1;}
+      else if(r>0&&r<60){
+        if(p.dead<=0&&Math.abs(p.x-rightX)<14)b.pedLasR=r+1;
+        else b.pedLasR=Math.max(0,r-1);
+        if(b.pedLasR>=60){bossBeam(rightX,b.y+10,rightX,H+8,14,"#ff3355",10,40,99999,{b,ox:(112+off0),oy:10,followX2:true});b.pedLasR=0;b.pedLasRCd=300;SFX.warn();}}}
   }
   // —— 主攻击 ——
   b.mainT--;