diff --git a/star-raid/js/boss_art.js b/star-raid/js/boss_art.js
index aa3cea9..b3ae790 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");
-     // 大激光蓄力前摇：画在炮塔口下方的蓄力圆（与小激光琴键蓄力圆同源，换色赤红）
-     const prog=sd<0?((b.pedLasL||0)/60):((b.pedLasR||0)/60);
-     if(prog>0){const a=Math.min(prog,1);
+     // 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
+     const raw=sd<0?(b.pedLasL||0):(b.pedLasR||0);
+     if(raw>0){const a=Math.min(raw/60,1);
        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 cc226ef..15352a3 100644
--- a/star-raid/js/enemies.js
+++ b/star-raid/js/enemies.js
@@ -350,18 +350,32 @@ 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——玩家站在炮塔水平正下方蓄力后发射99999伤害大激光（不管上下远近，只管左右）
+  // 钢琴：大炮塔惩罚激光——三态：蓄力(1-60)→发射→消退(61-360)→空闲(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);
-    if(p.dead<=0&&Math.abs(p.x-leftX)<14){
-      b.pedLasL=Math.min(60,(b.pedLasL||0)+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;SFX.warn();}
-    }else b.pedLasL=Math.max(0,(b.pedLasL||0)-1);
-    if(p.dead<=0&&Math.abs(p.x-rightX)<14){
-      b.pedLasR=Math.min(60,(b.pedLasR||0)+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;SFX.warn();}
-    }else b.pedLasR=Math.max(0,(b.pedLasR||0)-1);
+    // 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;
+    }
+    // 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;
+    }
   }
   // —— 主攻击 ——
   b.mainT--;