diff --git a/star-raid/js/enemies.js b/star-raid/js/enemies.js
index 7376642..d8ac5bd 100644
--- a/star-raid/js/enemies.js
+++ b/star-raid/js/enemies.js
@@ -210,7 +210,7 @@ function bossHit(x,y,r){
 }
 function shuffled(n){const a=[];for(let i=0;i<n;i++)a.push(i);for(let i=n-1;i>0;i--){const j=rndi(0,i),t=a[i];a[i]=a[j];a[j]=t;}return a;}
 function bossBeam(x1,y1,x2,y2,w,col,tele,dur,dmg,src){  // Boss光束：tele帧预警→dur帧伤害；src={b,ox,oy,followX2}时发射点跟随Boss
-  G.bbeams.push({x1,y1,x2,y2,w,col,tele,life:dur,dmg:dmg||20,cd:0,src:src||null});
+  G.bbeams.push({x1,y1,x2,y2,w,col,tele,life:dur,dur0:dur,dmg:dmg||20,cd:0,src:src||null});
 }
 function spawnFunnels(b,n){  // 夺权者X：蓝白长钉无人机（环绕僚机；定期脱离环绕摆阵型齐射）
   for(let i=0;i<n;i++)
@@ -350,18 +350,18 @@ 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1秒后发射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——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）
   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=(b.pedLasL||0)+1;
-      if(b.pedLasL>=60){bossBeam(leftX,b.y+10,leftX,H+8,6,"#ff3355",10,40,99999,{b,ox:-(112+off0),oy:10,followX2:true});b.pedLasL=0;SFX.warn();}
-    }else b.pedLasL=0;
+      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=(b.pedLasR||0)+1;
-      if(b.pedLasR>=60){bossBeam(rightX,b.y+10,rightX,H+8,6,"#ff3355",10,40,99999,{b,ox:(112+off0),oy:10,followX2:true});b.pedLasR=0;SFX.warn();}
-    }else b.pedLasR=0;
+      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);
   }
   // —— 主攻击 ——
   b.mainT--;
diff --git a/star-raid/js/render.js b/star-raid/js/render.js
index 7b0655b..454552a 100644
--- a/star-raid/js/render.js
+++ b/star-raid/js/render.js
@@ -224,6 +224,12 @@ function drawBossFx(){
       ctx.beginPath();ctx.moveTo(bm.x1,bm.y1);ctx.lineTo(bm.x2,bm.y2);ctx.stroke();ctx.globalAlpha=1;}}
     else{ctx.globalCompositeOperation="lighter";
       ctx.globalAlpha=clamp(bm.life/10,0,1)*0.85;
+      // 大激光起点扩口半圆（发射时较小然后扩大）
+      if(bm.dmg>=90000){const pR=Math.min(bm.w*0.7,bm.w*0.6*(1-bm.life/(bm.dur0||1)));
+        if(pR>0.5){ctx.fillStyle=bm.col;
+          ctx.beginPath();ctx.arc(bm.x1,bm.y1,pR,0,Math.PI);ctx.fill();
+          ctx.strokeStyle="#fff";ctx.lineWidth=Math.max(1,pR/3);
+          ctx.beginPath();ctx.arc(bm.x1,bm.y1,pR,0,Math.PI);ctx.stroke();}}
       ctx.strokeStyle=bm.col;ctx.lineWidth=bm.w;
       ctx.beginPath();ctx.moveTo(bm.x1,bm.y1);ctx.lineTo(bm.x2,bm.y2);ctx.stroke();
       ctx.strokeStyle="#fff";ctx.lineWidth=Math.max(1,bm.w/3);