diff --git a/cache/crop_gap.png b/cache/crop_gap.png
new file mode 100644
index 0000000..a1c301b
Binary files /dev/null and b/cache/crop_gap.png differ
diff --git a/star-raid/js/enemies.js b/star-raid/js/enemies.js
index 87fed20..8cf4bce 100644
--- a/star-raid/js/enemies.js
+++ b/star-raid/js/enemies.js
@@ -354,7 +354,7 @@ function bossMain(b,def,fm){
       for(let i=-2;i<=2;i++)ebul(b.x+i*12,b.y+16,a0+i*0.13,2.2+0.2*ph,"orbR");
       b.mainT=Math.round((ph?52:70)/fm);break;
     case "spawn": { // 太空原种：花弹从腹末生殖腔喷出（发射点=生殖腔摆动，与drawProgenitor同源公式）；P1三波起手偏左 / P2生殖腔血光柱+翼尖花弹
-      if(ph===0){const swx=Math.sin(b.t*0.055+2.8)*5.2;
+      if(ph===0){const swx=Math.sin(b.t*0.055+2.8)*4.8;
         for(let k=0;k<3;k++)for(let i=-2;i<=2;i++){
           const bb=ebul(b.x+swx,b.y+34,a0+i*0.16+(k-1)*0.09+[0.2,0.1,0][k],1.5+k*0.2,"flowr",14);
           bb.grow=0.007;bb.maxS=2.8;bb.scale=0.9;}
diff --git a/star-raid/js/render.js b/star-raid/js/render.js
index 091aee1..b1f3b70 100644
--- a/star-raid/js/render.js
+++ b/star-raid/js/render.js
@@ -280,22 +280,22 @@ function drawProgenitor(b,t,fl,tf){ // 太空原种·装甲虫兽（tf 0=装甲
     ctx.restore();}
   // —— 摆尾：先画在躯体下层（尾根被加长的身体覆住，无缝衔接），5节逐节相位摆动；P2节间血红肉显露+整体伸长 ——
   const segH=5.2+tf*1.6,gap=11;
-  for(let i=4;i>=0;i--){const sw=Math.sin(t*0.055+i*0.7)*(1.2+i),sy=gap+i*segH,hw=9-i*1.5;
+  for(let i=4;i>=0;i--){const sw=Math.sin(t*0.055+i*0.7)*(0.8+i),sy=gap+i*segH,hw=9-i*1.5;
     if(tf>0&&i<4){ctx.globalAlpha=tf*0.85;px(sw-hw+2,sy+segH-2,(hw-2)*2,2,"#c8202e");ctx.globalAlpha=1;}   // 节间血肉环
     poly([sw-hw,sy,sw+hw,sy,sw+hw-2,sy+segH,sw-hw+2,sy+segH],i%2?"#b8c8d8":"#c9d6e2");   // 尾节甲片
     px(sw-hw,sy,3,segH,"#e8f0f6");px(sw+hw-3,sy,3,segH,"#8498ac");   // 左亮右暗
     for(const sd of[-1,1])poly([sw+sd*(hw+1),sy+1,sw+sd*(hw+4),sy+2.5,sw+sd*(hw+1),sy+4],"#e8dcc0");   // 节侧骨刺
   }
-  const swT=Math.sin(t*0.055+2.8)*5.2,tipY=gap+4*segH;   // 尾末生殖腔（花弹发射口，与enemies.js同源公式）
+  const swT=Math.sin(t*0.055+2.8)*4.8,tipY=gap+4*segH;   // 尾末生殖腔（花弹发射口，与enemies.js同源公式）
   circ(swT,tipY+2,2.6+Math.sin(t*0.11)*0.6,fl||(tf>0.5?"#ff2a3c":"#ff5566"));
   circ(swT,tipY+2,1.1,"#ffdfe5");
   // —— 壳下血肉（常存于背甲之下，滑开才见；血红，非粉） ——
   if(tf>0){ctx.globalAlpha=tf*0.9;
-    poly([0,-36,9,-29,11,-14,8,2,5,16,0,20,-5,16,-8,2,-11,-14,-9,-29],"#c8202e");
-    px(-2,-30,4,46,"#e8393a");ctx.globalAlpha=1;}
+    poly([0,-36,9,-29,11,-14,10,2,9,16,8,22,-8,22,-9,16,-10,2,-11,-14,-9,-29],"#c8202e");
+    px(-2,-30,4,52,"#e8393a");ctx.globalAlpha=1;}
   // —— 背甲两瓣：沿背脊中线裂开，P2向外滑开（同一多边形平移） ——
   for(const sd of[-1,1]){ctx.save();ctx.translate(sd*tf*7,0);
-    poly([0,-40,sd*11,-37,sd*15,-28,sd*13,-12,sd*10,4,sd*6,14,0,18],sd<0?"#c9d6e2":"#9fb0c2");
+    poly([0,-40,sd*11,-37,sd*15,-28,sd*13,-12,sd*12,4,sd*11,14,sd*10,20,0,20],sd<0?"#c9d6e2":"#9fb0c2");
     poly([0,-40,sd*11,-37,sd*15,-28,sd*7,-26,sd*5,-36],"#e8f0f6");   // 受光斜面
     for(let i=0;i<4;i++)px(sd*(4+i*2.8)-1,-24+i*9,2,5,"#5a6c80");     // 甲片板缝
     const crk=Math.max(0,Math.min(1,(tf-0.15)/0.4))*10;                 // 裂纹随tf生长（延长，非新增）