diff --git a/index.html b/index.html
index 2f2dae0..92d5a15 100644
--- a/index.html
+++ b/index.html
@@ -6,7 +6,7 @@
 <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate">
 <meta http-equiv="Pragma" content="no-cache">
 <meta http-equiv="Expires" content="0">
-<title>MV1 赛道数学</title>
+<title>🏆 #1 世界冠军数学赛道 — Max Verstappen</title>
 <link href="https://fonts.googleapis.com/css2?family=Inter:wght@500;700;900&family=Noto+Sans+SC:wght@400;700;900&display=swap" rel="stylesheet">
 <style>
 * { margin:0; padding:0; box-sizing:border-box; }
@@ -82,7 +82,7 @@ body {
 .cp.done circle { fill:#ffd700; stroke:#ffd700; }
 
 .cp-label {
-  font-size:9px; font-weight:900; fill:rgba(255,255,255,0.65); letter-spacing:1px;
+  font-size:10px; font-weight:900; fill:rgba(255,255,255,0.65); letter-spacing:1px;
   transition:all 0.3s; text-anchor:middle; font-family:'Inter',monospace;
 }
 .cp.done .cp-label { fill:#ffd700; }
@@ -243,6 +243,7 @@ body {
 .pm .ps { font-size:18px; margin:8px 0 4px; letter-spacing:5px; }
 .pm .pxp { color:#ffd700; font-weight:900; font-size:16px; margin:2px 0 6px; font-family:'Inter',monospace; }
 .pm .pms { color:rgba(255,255,255,0.4); font-size:12px; letter-spacing:1px; line-height:1.5; }
+.pm .pmQuote { font-size:11px; color:rgba(255,255,255,0.2); font-style:italic; margin:2px 0; letter-spacing:0.5px; line-height:1.4; }
 
 .pm .next-track {
   margin:16px auto 0; padding:8px 20px; border:none; background:#e10600; color:#fff;
@@ -296,6 +297,34 @@ body {
 }
 @keyframes spFall { 0%{transform:translateY(-10px) scale(1);opacity:1} 100%{transform:translateY(100vh) scale(0);opacity:0} }
 
+/* ===== F1 TEAM RADIO ===== */
+.radio {
+  display:inline-flex; align-items:center; gap:8px;
+  padding:6px 14px; margin:2px 0; border-radius:3px;
+  font-size:12px; font-weight:700; letter-spacing:0.5px;
+  animation:squawk 0.3s cubic-bezier(.34,1.56,.64,1);
+}
+.radio.pass { background:rgba(46,204,113,0.08); border-left:3px solid #2ecc71; color:#2ecc71; }
+.radio.fail { background:rgba(225,6,0,0.05); border-left:3px solid #e10600; color:#e10600; }
+.radio.streak { background:rgba(255,215,0,0.08); border-left:3px solid #ffd700; color:#ffd700; }
+.radio .rbl { font-size:16px; }
+.radio .rbl.s1{animation:blip 0.4s ease 3;}
+.radio .rbl.s2{animation:blip 0.3s ease 3;}
+
+.hudExtra { display:flex; gap:10px; justify-content:center; margin-bottom:6px; min-height:22px; }
+.streakDisplay { font-size:11px; display:inline-flex; align-items:center; gap:4px; padding:3px 10px; border-radius:2px; }
+.streakDisplay.on { background:rgba(255,215,0,0.06); border:1px solid rgba(255,215,0,0.1); color:#ffd700; animation:pop 0.3s ease; }
+.lapCounter { font-size:10px; color:rgba(255,255,255,0.2); display:inline-flex; align-items:center; gap:4px; font-family:'Inter',monospace; padding:3px 8px; }
+@keyframes squawk { 0%{opacity:0;transform:scale(0.92) translateX(-8px)} 100%{opacity:1;transform:scale(1) translateX(0)} }
+@keyframes blip { 0%,100%{opacity:1} 50%{opacity:0.2} }
+
+.checker {
+  position:absolute; inset:0; pointer-events:none; overflow:hidden; opacity:0.04;
+  background:repeating-conic-gradient(#fff 0% 25%,#000 0% 50%) 0 0 / 20px 20px;
+  animation:scrollBg 8s linear infinite;
+}
+@keyframes scrollBg { 0%{background-position:0 0} 100%{background-position:40px 40px} }
+
 /* ===== RESPONSIVE ===== */
 @media (max-width:600px) {
   .app { padding:12px; }
@@ -430,7 +459,7 @@ body {
       <span class="y">MV1</span>
     </div>
     <div class="hud-spacer"></div>
-    <div class="hud-stat"><div class="lbl">STAGE</div><div class="val y" id="hStage">1/4</div></div>
+    <div class="hud-stat"><div class="lbl">\u{1F3C6} GP</div><div class="val y" id="hStage">1/4</div></div>
     <div class="hud-stat"><div class="lbl">PTS</div><div class="val r" id="hPts">0</div></div>
     <button class="mbtn" id="mBtn">&#x266B;</button>
   </div>
@@ -442,10 +471,6 @@ body {
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         <svg viewBox="0 0 60 28" class="cs" xmlns="http://www.w3.org/2000/svg">
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+          <rect x="4" y="4" width="4" height="20" rx="1" fill="#1e41a0" stroke="#e10600" stroke-width="0.3"/>
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-          <path d="M 12,7 L 24,6 Q 28,6 30,8 L 30,20 Q 28,22 24,22 L 12,21 Z" fill="url(#bodyGrad)"/>
+          <path d="M 12,7 L 24,6 Q 28,6 30,8 L 30,20 Q 28,22 24,22 L 12,21 Z" fill="#1e41a0"/>
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+          <path d="M 24,4 L 34,4 Q 38,4 40,8 L 40,10 L 24,9 Z" fill="#1e41a0"/>
+          <path d="M 24,24 L 34,24 Q 38,24 40,20 L 40,18 L 24,19 Z" fill="#1e41a0"/>
+          <path d="M 30,8 Q 36,7 40,9 L 44,10 Q 48,10 50,11 L 52,13 L 52,15 L 50,17 Q 48,18 44,18 L 40,19 Q 36,21 30,20 Z" fill="#1e41a0"/>
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-          <path d="M 52,9 L 60,10 L 60,18 L 52,19 Z" fill="#0a0a3a" stroke="#e10600" stroke-width="0.3"/>
+          <path d="M 52,9 L 60,10 L 60,18 L 52,19 Z" fill="#1e41a0" stroke="#e10600" stroke-width="0.3"/>
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-          <text x="35" y="16" font-family="'Inter',Arial,sans-serif" font-weight="900" font-size="7" fill="#ffd700" text-anchor="middle">1</text>
-          <text x="20" y="20" font-family="'Inter',Arial,sans-serif" font-weight="900" font-size="2.5" fill="#e10600" text-anchor="middle" opacity="0.6">RED BULL</text>
+          <text x="35" y="16" font-family="'Inter',Arial,sans-serif" font-weight="900" font-size="8" fill="#ffd700" text-anchor="middle">#1</text>
+          <text x="20" y="20" font-family="'Inter',Arial,sans-serif" font-weight="900" font-size="2.5" fill="#e10600" text-anchor="middle" opacity="0.8">RED BULL</text>
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@@ -501,8 +526,8 @@ body {
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           <circle cx="280" cy="68" r="14" fill="rgba(225,6,0,0.12)" stroke="rgba(225,6,0,0.3)" stroke-width="2"/>
-          <text class="cp-label" x="280" y="72">SS 1</text>
-          <text class="cp-name" x="280" y="40">有理数</text>
+          <text class="cp-label" x="280" y="72">🏆 #1</text>
+          <text class="cp-name" x="280" y="40">第1站 · 有理数</text>
           <text class="cp-stars" id="cps0" x="280" y="90"></text>
           <text class="lock-icon" x="280" y="68" style="display:none">&#x1F512;</text>
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@@ -511,8 +536,8 @@ body {
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-          <text class="cp-label" x="80" y="204">SS 2</text>
-          <text class="cp-name" x="80" y="172">整式的加减</text>
+          <text class="cp-label" x="80" y="204">🏆 #1</text>
+          <text class="cp-name" x="80" y="172">第2站 · 整式的加减</text>
           <text class="cp-stars" id="cps1" x="80" y="222"></text>
           <text class="lock-icon" x="80" y="200" style="display:none">&#x1F512;</text>
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@@ -521,8 +546,8 @@ body {
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-          <text class="cp-label" x="280" y="344">SS 3</text>
-          <text class="cp-name" x="280" y="312">一元一次方程</text>
+          <text class="cp-label" x="280" y="344">🏆 #1</text>
+          <text class="cp-name" x="280" y="312">第3站 · 一元一次方程</text>
           <text class="cp-stars" id="cps2" x="280" y="362"></text>
           <text class="lock-icon" x="280" y="340" style="display:none">&#x1F512;</text>
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           <circle cx="120" cy="468" r="14" fill="rgba(225,6,0,0.12)" stroke="rgba(225,6,0,0.3)" stroke-width="2"/>
-          <text class="cp-label" x="120" y="472">SS 4</text>
-          <text class="cp-name" x="120" y="440">几何图形初步</text>
+          <text class="cp-label" x="120" y="472">🏆 #1</text>
+          <text class="cp-name" x="120" y="440">第4站 · 几何图形初步</text>
           <text class="cp-stars" id="cps3" x="120" y="490"></text>
           <text class="lock-icon" x="120" y="468" style="display:none">&#x1F512;</text>
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@@ -542,13 +567,15 @@ body {
     <div style="text-align:center;margin-top:4px;">
       <div style="display:inline-block;background:rgba(225,6,0,0.03);border:1px solid rgba(225,6,0,0.05);padding:5px 16px;border-radius:2px;">
         <span style="font-size:9px;color:rgba(255,255,255,0.35);letter-spacing:2px;font-weight:700;">
-          &#x26A1; 点击检查点发车 &nbsp;|&nbsp; 四站全胜 = 世界冠军
+          &#x26A1; 追随 #1 Max Verstappen 的冠军之路 · 四站全胜 = 世界冠军 &#x1F3C6;
         </span>
       </div>
     </div>
     <div style="display:flex;gap:8px;justify-content:center;margin-top:6px;flex-wrap:wrap;">
       <button class="hudBtn" id="wrongBtn"><span id="hintBadge">0</span>\u{1F4D2} 错题集</button>
+      <button class="hudBtn" id="revLapBtn" style="display:none;background:rgba(255,215,0,0.06);border-color:rgba(255,215,0,0.1);color:#ffd700;">\u{1F3CE}\uFE0F 复习圈</button>
       <button class="hudBtn hudDanger" id="clrP">\u{1F5D1} 清除进度</button>
+      <button class="hudBtn" id="unlockBtn" style="background:rgba(255,215,0,0.06);border-color:rgba(255,215,0,0.1);color:#ffd700;">🔓 解锁章节</button>
     </div>
     <div style="text-align:center;margin-top:6px;margin-bottom:4px;">
       <button class="hudBtn" id="dbBtn" style="padding:8px 16px;font-size:10px;">\u{1F4CA} 学习总览</button>
@@ -563,10 +590,11 @@ body {
       <button class="bk" id="bkMapBtn" style="margin-bottom:0;background:rgba(255,215,0,0.06);border-color:rgba(255,215,0,0.1);color:#ffd700;">&#x1F4CA; 答题地图</button>
     </div>
     <div class="ch">
-      <div class="gl" id="cGl">SS 1</div>
+      <div class="gl" id="cGl">🏆 MV1 · 第1站</div>
       <h2 id="cTi"></h2>
       <div class="sm" id="cDe"></div>
     </div>
+    <div class="hudExtra" id="hudExtra"><div class="streakDisplay" id="streakD"></div><div class="lapCounter" id="lapCnt"></div></div>
     <div id="cCo"></div>
   </div>
 
@@ -601,6 +629,7 @@ body {
 <!-- PODIUM -->
 <div class="po" id="po">
   <div class="pm">
+    <div class="checker" id="pmChk"></div>
     <img src="mv1.png" class="mv1-photo" id="mv1Img" onerror="this.classList.add('hide');document.getElementById('mv1Av').classList.remove('hide')" onload="document.getElementById('mv1Av').classList.add('hide')">
     <div class="mv1-av hide" id="mv1Av">MV1</div>
     <div class="pn1" id="pmN">P1</div>
@@ -609,6 +638,8 @@ body {
     <div class="ps" id="pmSt"></div>
     <div class="pxp" id="pmXp">+0 PTS</div>
     <p class="pms" id="pmMs">下个赛段继续冲</p>
+    <div class="radio pmRadio" id="pmRadio"></div>
+    <div class="pmQuote" id="pmQ"></div>
     <button class="next-track" id="pmNt">下一站 &rarr;</button>
   </div>
 </div>
@@ -962,10 +993,12 @@ const SS = [
       // ── 分站赛题：重点 ──
       { type:'ss', tag:'重点', question:'下面哪个数既是分数又是负数？', opts:['\u22123','\u22122.5','0','+1/3'], correct:1, passMsg:'✅ -2.5=-5/2，是分数也是负数', failMsg:'💡 -3是整数；0既不是正也不是负；+1/3是正分数。\u22122.5=-5/2✓' },
       { type:'ss', tag:'重点', question:'下面哪个数既不是正数也不是负数？', opts:['\u22123','0','1/2','\u22122.5'], correct:1, passMsg:'✅ 0是正负数的分界线', failMsg:'💡 0是唯一既不是正数也不是负数的数' },
+      { type:'ss', tag:'重点', question:'下列各数中：-3、2/3、0、-0.5、3.14、-7/2，属于负分数的是', opts:['-3、-0.5','-0.5、-7/2','-7/2、3.14','-3、-7/2'], correct:1, passMsg:'✅ -0.5=-1/2，-7/2=-3.5，都是负分数', failMsg:'💡 负分数=小于0的分数。<br>-3是负整数不是分数；2/3是正分数；0不是正负；3.14是正小数=正分数<br>只有-0.5=-1/2、-7/2是<strong>负分数</strong>' },
       { type:'ss', tag:'重点', question:'\u22123 的相反数是什么？', opts:['3','\u22123','±3','0'], correct:0, passMsg:'✅ -3的相反数是+3', failMsg:'💡 相反数就是<strong>符号相反</strong>的数，-3→+3（简写3）' },
       { type:'ss', tag:'重点', question:'\u22122 的倒数是？', opts:['2','\u22122','1/2','\u22121/2'], correct:3, passMsg:'✅ -2×(-1/2)=1', failMsg:'💡 倒数=1÷该数，-2→1÷(-2)=<strong>-1/2</strong>' },
       { type:'ss', tag:'重点', question:'用科学记数法表示305000正确的是', opts:['3.05×10⁵','3.05×10⁶','0.305×10⁶','305×10³'], correct:0, passMsg:'✅ 305000=3.05×10⁵', failMsg:'💡 小数点向左移5位→3.05×10⁵' },
       { type:'ss', tag:'重点', question:'近似数3.14×10⁴精确到', opts:['百分位','十分位','百位','千位'], correct:2, passMsg:'✅ 3.14×10⁴=31400，4在百位', failMsg:'💡 先还原：31400，最后的4在百位→精确到<strong>百位</strong>' },
+      { type:'ss', tag:'重点', question:'在(-3)⁴中，底数和指数分别是', opts:['-3和4','3和4','-4和3','-3和-4'], correct:0, passMsg:'✅ (-3)⁴底数=-3，指数=4', failMsg:'💡 aⁿ中a是底数（乘的数），n是指数（乘的次数）。<br>(-3)⁴=(-3)×(-3)×(-3)×(-3)=81。注意底数是<strong>-3</strong>不是3！' },
       // ── 分站赛题：核心 ──
       { type:'ss', tag:'核心', diagram:Geo.numLine(30,25,300,[-2,5],{labels:{'-2':'A','5':'B'}}), question:'数轴上，\u22122和5之间的距离是多少？', opts:['3','7','\u22127','\u22123'], correct:1, passMsg:'✅ 距离=|5-(-2)|=7', failMsg:'💡 距离=|大-小|=|5-(-2)|=7，距离永远是<strong>正数</strong>' },
       { type:'ss', tag:'核心', diagram:Geo.numLine(30,25,300,[-3,0],{labels:{'-3':'A','0':'O'}}), question:'数轴上表示\u22123的点到原点的距离是', opts:['3','\u22123','±3','0'], correct:0, passMsg:'✅ |-3|=3', failMsg:'💡 点到原点的距离=\|该数\|，\|-3\|=3' },
@@ -995,7 +1028,15 @@ const SS = [
       { type:'review', question:'有理数综合：下面哪个结果是对的？', opts:['(\u22122)+(\u22123)=\u22125','(\u22123)\u2212(\u22125)=\u22128','(\u22122)×(\u22123)=\u22126','(\u22128)÷(\u22122)=\u22124'], correct:0, passMsg:'✅ (-2)+(-3)=-5', failMsg:'💡 (-3)-(-5)=(-3)+(+5)=2；(-2)×(-3)=6；(-8)÷(-2)=4' },
       { type:'review', question:'利用运算律简算：(-2.5)+3.5+2.5+(-4.5)', opts:['\u22121','1','\u22120.5','0'], correct:0, passMsg:'✅ (-2.5+2.5)+(3.5-4.5)=0-1=-1', failMsg:'💡 交换结合：(-2.5+2.5)+(3.5-4.5)=0-1=<strong>-1</strong>' },
       { type:'review', question:'若a、b互为倒数，则ab的值为', opts:['0','1','\u22121','2'], correct:1, passMsg:'✅ 互为倒数的两个数乘积=1', failMsg:'💡 倒数定义：a×b=1时，a和b互为倒数' },
-      { type:'review', question:'下列比较大小正确的是', opts:['\u22123 < \u22125','\u22120.5 > \u22121','\u22127 > 0','\u22124 < \u22126'], correct:1, passMsg:'✅ -0.5>-1（绝对值小的反而大）', failMsg:'💡 负数比较：绝对值大的反而小。\n-0.5的绝对值0.5 < -1的绝对值1→-0.5 > -1' }
+      { type:'review', question:'下列比较大小正确的是', opts:['\u22123 < \u22125','\u22120.5 > \u22121','\u22127 > 0','\u22124 < \u22126'], correct:1, passMsg:'✅ -0.5>-1（绝对值小的反而大）', failMsg:'💡 负数比较：绝对值大的反而小。\n-0.5的绝对值0.5 < -1的绝对值1→-0.5 > -1' },
+      // ── 章末锦囊 ──
+      { type:'ms', icon:'📚', title:'有理数·章末锦囊',
+        kv:[
+          ['🧠 知识树','正负数→数轴→相反数/绝对值→四则运算→倒数→乘方→科学记数法'],
+          ['📝 核心口诀','零上为正零下为负，零是分界线\n数轴一条线，右边总比左边大\n相反数照镜子，符号相反值一样\n绝对值看距离，永远不取负值\n同号相加符号不变、绝对值相加\n异号相加符号取大、绝对值相减\n减去一个数≡加它的相反数\n同号得正异号得负，乘除通用\n乘积为一是倒数，零没倒数\n奇次方符号不变，偶次方负号不见\n科学记数a×10ⁿ，1≤|a|<10'],
+          ['⚠️ 易错TOP3','① -1⁴≠(-1)⁴：-1⁴=-(1⁴)=-1，(-1)⁴=1\n② 异号相加取符号：取绝对值大的符号，不是被减数\n③ 绝对值去掉忘变号：\|负数\|=它的相反数'],
+          ['💡 解题通法','含\|A\|+B²=0→各自为0\n两个负数比大小→绝对值大的反而小\n相反数→a+b=0；倒数→cd=1\n非负性：\|A\|≥0，A²≥0']
+        ]},
     ]},
   // ═══════════════════════════════════════
   // CHAPTER 2: 整式的加减
@@ -1121,11 +1162,20 @@ const SS = [
       { type:'ss', tag:'综合', question:'已知a²-a-1=0，求a³-2a+5的值', opts:['5','6','7','4'], correct:1, passMsg:'✅ a²=a+1，a³=a×a²=a(a+1)=a²+a=(a+1)+a=2a+1；原式=2a+1-2a+5=6', failMsg:'💡 整体代换：a²=a+1→a³=a(a+1)=a²+a=(a+1)+a=2a+1→原式=6' },
       { type:'ss', tag:'综合', question:'一个多项式加上-3x²+2x-5得2x²-x+3，求这个多项式', opts:['5x²-3x+8','-5x²+3x-8','5x²-3x-8','5x²+3x-8'], correct:0, passMsg:'✅ 被加式=和-加式=(2x²-x+3)-(-3x²+2x-5)=5x²-3x+8', failMsg:'💡 被加式+加式=和→被加式=和-加式。注意减多项式要变号！' },
       { type:'ss', tag:'综合', question:'已知|x+2|+(y-3)²=0，求多项式2xy²-3x²y的值', opts:['-54','36','-6','54'], correct:0, passMsg:'✅ x+2=0→x=-2；y-3=0→y=3；代入：2(-2)(9)-3(4)(3)=-36-36=-72...验算：2×(-2)×9=-36；-3×4×3=-36；和=-72', failMsg:'💡 非负性→x=-2,y=3。代入计算注意符号！' },
+      { type:'ss', tag:'综合', question:'长方形长3x+2、宽2x，右上角挖去一个边长x的正方形，剩余面积是', opts:['6x²+4x','6x²+4x-x²=5x²+4x','6x+4','3x²+2x'], correct:1, passMsg:'✅ 大长方形=(3x+2)(2x)=6x²+4x，减x²得5x²+4x', failMsg:'💡 长方形面积=长×宽=(3x+2)×2x=<strong>6x²+4x</strong><br>挖去x²→剩余=6x²+4x-x²=<strong>5x²+4x</strong>' },
       // ── 章节复习 ──
       { type:'review', question:'单项式3ab的系数和次数是', opts:['3和1','3和2','1和2','3和0'], correct:1, passMsg:'✅ 系数3，次数=a¹b¹=2', failMsg:'💡 系数=数字→3；次数=a¹+b¹=1+1=2' },
       { type:'review', question:'下列合并同类项正确的是', opts:['3x+5x=8x²','2a+3b=5ab','5x²-2x²=3','-2ab+2ba=0'], correct:3, passMsg:'✅ -2ab+2ba=0（3ab与4ba是同类项）', failMsg:'💡 A应为8x（指数不变）；B不能合并；C应为3x²' },
       { type:'review', question:'化简：(5a²-3b²)-2(a²-b²)-(a²-5b²)=', opts:['2a²+0b²=2','2a²+4b²=18','6a²+4b²=22','2a²-4b²=-14'], correct:1, passMsg:'✅ 化简得2a²+4b²，代入a=-1,b=2得18', failMsg:'💡 =5a²-3b²-2a²+2b²-a²+5b²=(5-2-1)a²+(-3+2+5)b²=2a²+4b²' },
-      { type:'review', question:'三角形边长分别为2x+1、3x-2、x+3，则周长为', opts:['6x+2','6x-2','6x+6','5x+2'], correct:0, passMsg:'✅ 周长=(2x+1)+(3x-2)+(x+3)=6x+2', failMsg:'💡 周长=三边之和。2x+3x+x=6x；1-2+3=2→6x+2' }
+      { type:'review', question:'三角形边长分别为2x+1、3x-2、x+3，则周长为', opts:['6x+2','6x-2','6x+6','5x+2'], correct:0, passMsg:'✅ 周长=(2x+1)+(3x-2)+(x+3)=6x+2', failMsg:'💡 周长=三边之和。2x+3x+x=6x；1-2+3=2→6x+2' },
+      // ── 章末锦囊 ──
+      { type:'ms', icon:'📚', title:'整式的加减·章末锦囊',
+        kv:[
+          ['🧠 知识树','单项式(系数+次数)→多项式(项+次数)→同类项→合并→去括号→整式加减应用'],
+          ['📝 核心口诀','系数看数字，次数看字母指数和\n单独一个数也是单项式（次数0）\n同类项看"长相"：字母相同指数相同\n合并同类项：系数相加，字母指数照抄\n去括号=拆快递：+直接开箱不变，-里面全变号\n括号前有系数：分配律逐项乘\n整式加减三步走：去括号→合并→代入'],
+          ['⚠️ 易错TOP3','① π是常数不是字母！-πx²y/3系数=-π/3\n② 去括号忘变号：-(a-b)=-a+b，不是-a-b\n③ 单项式次数漏加：-3x²y次数=2+1=3，不是2'],
+          ['💡 解题通法','整体代入：相同部分看作整体\n不含某项→该项系数=0\n降幂排列：从高次到低次\n化简求值：先化简再代入']
+        ]},
     ]},
   // ═══════════════════════════════════════
   // CHAPTER 3: 一元一次方程
@@ -1247,6 +1297,7 @@ const SS = [
       { type:'ss', tag:'重点', question:'若x=2是方程3x-4=mx的解，则m=', opts:['1','2','-1','0'], correct:0, passMsg:'✅ 代入：6-4=2m→2=2m→m=1', failMsg:'💡 把x=2代入方程：3×2-4=m×2→2=2m→m=1' },
       { type:'ss', tag:'重点', question:'根据等式性质，由x=y可推出', opts:['x+2=y-2','2x=3y','x/2=y/2','x²=y²'], correct:2, passMsg:'✅ 两边同÷2→x/2=y/2', failMsg:'💡 性质2：两边同乘/除同一个不为0的数，等式仍成立' },
       { type:'ss', tag:'重点', question:'解方程2(x-2)-3(4x-1)=9(1-x)，x=', opts:['x=-10','x=10','x=-1','x=1'], correct:0, passMsg:'✅ 展开：2x-4-12x+3=9-9x→-10x-1=9-9x→-x=10→x=-10', failMsg:'💡 去括号仔细：-3(4x-1)=-12x+3；9(1-x)=9-9x' },
+      { type:'ss', tag:'重点', question:'一个两位数，十位数字是x，个位数字是y，这个两位数是', opts:['x+y','10xy','10x+y','x+10y'], correct:2, passMsg:'✅ 十位×10+个位=10x+y', failMsg:'💡 十位上的x代表x个10→10x；个位上的y代表y个1→y。两位数=<strong>10x+y</strong><br>例：x=3,y=5→10×3+5=35✓' },
       // ── 核心题 ──
       { type:'ss', tag:'核心', question:'车间28人生产螺栓螺母，每人每天做螺栓12个或螺母18个。1螺栓配2螺母。设x人做螺栓，方程正确的是', opts:['18(28-x)=2×12x','12x=2×18(28-x)','2×12x=18(28-x)','12x=18(28-x)'], correct:0, passMsg:'✅ 螺母数=2×螺栓数→18(28-x)=2×12x', failMsg:'💡 螺栓=12x，螺母=18(28-x)，1配2→螺母=2×螺栓' },
       { type:'ss', tag:'核心', question:'商品进价100元，标价150元，打八折出售，利润为', opts:['10元','20元','30元','50元'], correct:1, passMsg:'✅ 售价=150×0.8=120，利润=120-100=20元', failMsg:'💡 利润=售价-进价。售价=标价×折扣=120，120-100=20' },
@@ -1266,11 +1317,20 @@ const SS = [
       { type:'ss', tag:'综合', question:'甲、乙两地相距300km，快车80km/h，慢车60km/h。快车先开30分钟，两车相向而行，慢车开出几小时后相遇？', opts:['2小时','1.5小时','2.5小时','3小时'], correct:0, passMsg:'✅ 快车先走80×0.5=40km。设t小时：80t+60t=300-40→140t=260→t=1.86...→约2小时', failMsg:'💡 快车先走40km，剩余260km。速度和140km/h→260÷140≈1.86小时' },
       { type:'ss', tag:'综合', question:'某校七年级共8个班进行足球赛，胜得3分、平得1分、负得0分。七(1)班比赛全部结束，共得17分，其中负了2场，这个班胜了几场？', opts:['5场','6场','4场','3场'], correct:1, passMsg:'✅ 共赛7场（8队单循环每队7场）。负2场→设胜x场：3x+(7-2-x)=17→3x+5-x=17→2x=12→x=6', failMsg:'💡 8队单循环每队赛7场。胜x场→平7-2-x=5-x场。3x+(5-x)=17→x=6' },
       { type:'ss', tag:'综合', question:'小王将一笔钱存入银行1年，年利率2.5%，到期后本息和5125元，本金是', opts:['5000元','5100元','5025元','5050元'], correct:0, passMsg:'✅ 设本金x：x+2.5%x=5125→1.025x=5125→x=5000', failMsg:'💡 x+0.025x=1.025x=5125→x=5000' },
+      { type:'ss', tag:'综合', question:'某市出租车：起步价8元（3km内），超过3km部分按2.4元/km计费。行驶x km（x>3）的费用是', opts:['8+2.4x','8+2.4(x-3)','2.4x','2.4(x-3)'], correct:1, passMsg:'✅ 8+2.4(x-3)=2.4x+0.8', failMsg:'💡 3km以内付8元；超出部分=(x-3)km，收2.4(x-3)元<br>总价=8+2.4(x-3)。x=10时代入：8+2.4×7=8+16.8=<strong>24.8元</strong>' },
       // ── 章节复习 ──
       { type:'review', question:'下列解方程步骤正确的是', opts:['3x+5=0→3x=5','4x-2=x→4x-x=2','2x=6→x=3','x/2=3→x=3/2'], correct:2, passMsg:'✅ 2x=6→x=3✓（两边同÷2）', failMsg:'💡 A应为3x=-5；B应为4x-x=2→3x=2→x=2/3；C✓；D应为x=6' },
       { type:'review', question:'甲乙两地240km，一轮船往返需10小时（顺流5小时，逆流5小时），求船速和水速', opts:['船24km/h 水0','船26km/h 水2','船25km/h 水1','船28km/h 水4'], correct:0, passMsg:'✅ 顺=240÷5=48，逆=240÷5=48→船速48，水速0（静水）', failMsg:'💡 顺流=船+水=48，逆流=船-水=48→船速=48，水速=0（静水行船）' },
       { type:'review', question:'某电信公司话费：A方案无月租0.4元/分，B方案月租18元+0.2元/分。每月通话多少分钟时两方案费用相同？', opts:['60分','90分','120分','150分'], correct:1, passMsg:'✅ 设x分钟：0.4x=18+0.2x→0.2x=18→x=90', failMsg:'💡 A=0.4x，B=18+0.2x。相等→0.4x=18+0.2x→x=90分钟' },
-      { type:'review', question:'某商品标价200元，打八折后仍获利60元，进价是', opts:['120元','100元','80元','140元'], correct:1, passMsg:'✅ 售价=160，进价x：160-x=60→x=100', failMsg:'💡 售价=200×0.8=160；利润=售价-进价=60→进价=100' }
+      { type:'review', question:'某商品标价200元，打八折后仍获利60元，进价是', opts:['120元','100元','80元','140元'], correct:1, passMsg:'✅ 售价=160，进价x：160-x=60→x=100', failMsg:'💡 售价=200×0.8=160；利润=售价-进价=60→进价=100' },
+      // ── 章末锦囊 ──
+      { type:'ms', icon:'📚', title:'一元一次方程·章末锦囊',
+        kv:[
+          ['🧠 知识树','等式性质→去分母→去括号→移项→合并→系数化1→应用题(配套/工程/行程/销售/方案/积分)'],
+          ['📝 核心口诀','方程是含未知数的等式，解方程就是求x\n去分母：每项都要乘公分母（常数项也要！）\n去括号：正不变号、负全变号\n移项过桥要变号！+变-，-变+\n系数化1：同除以x前面的数\n应用题四步走：设→列→解→验（写答！）'],
+          ['⚠️ 易错TOP3','① 去分母漏乘常数项：=1、=2等也要乘以公分母\n② 移项不变号：移到等号另一边要变号\n③ 设未知数不写单位：设x小时，不是设x'],
+          ['💡 解题通法','行程：相向用速度和，追及用速度差\n配套：甲×n=乙（1配n）\n工程：总量=1，效率=1/时间\n销售：利润=售价-进价\n方案：列等式找临界点\n比赛积分：胜×3+平×1+负×0=总分']
+        ]},
     ]},
   // ═══════════════════════════════════════
   // CHAPTER 4: 几何图形初步
@@ -1439,6 +1499,7 @@ const SS = [
       { type:'ss', tag:'核心', question:'一个角比它的补角小40°，这个角是', opts:['110°','70°','55°','35°'], correct:1, passMsg:'✅ x=(180-x)-40→x=70°', failMsg:'💡 x=180-x-40→2x=140→x=<strong>70°</strong>。验算：70+110=180✓' },
       { type:'ss', tag:'核心', question:'点C在直线AB上，AB=8，BC=3，则AC等于', opts:['8 或 3','5','11','5 或 11'], correct:3, passMsg:'✅ C在AB间→AC=5；C在AB延长线上→AC=11', failMsg:'💡 没说"在线段上"！分类讨论：①C在AB间→5；②C在B右侧→11' },
       { type:'ss', tag:'核心', question:'∠AOB=80°，OC平分∠AOB，OD平分∠BOC，则∠AOD=', opts:['80°','40°','60°','20°'], correct:2, passMsg:'✅ ∠AOC=40°，∠COD=20°，∠AOD=60°', failMsg:'💡 OC平分80°→∠AOC=40°，OD平分40°→∠COD=20°→∠AOD=60°' },
+      { type:'ss', tag:'核心', question:'计算：42°18′+37°52′=', opts:['80°10′','79°70′','80°70′','79°10′'], correct:0, passMsg:'✅ 42°18′+37°52′=79°70′=80°10′（70′=1°10′）', failMsg:'💡 度+度，分+分：18′+52′=70′=1°10′；42°+37°+1°=<strong>80°10′</strong><br>牢记度分秒<strong>60进制</strong>！满60进1！' },
       // ── 高频题 ──
       { type:'ss', tag:'高频', question:'AM:MB=3:2，AN:NB=5:1，M、N在线段AB上，MN=7，则AB=', opts:['AB=25','AB=28','AB=30','AB=35'], correct:2, passMsg:'✅ 双设k→AB=30', failMsg:'💡 AM:MB=3:2→AB=5k；AN:NB=5:1→AB=6t→5k=6t→t=5k/6<br>MN=|3k-5t|=7k/6=7→k=6→AB=30' },
       { type:'ss', tag:'高频', question:'2:15到2:45，时针转过的角度是', opts:['180°','30°','15°','90°'], correct:2, passMsg:'✅ 30分钟×0.5°/分=15°', failMsg:'💡 时针每分钟转0.5°，30分钟×0.5°=<strong>15°</strong>。分针转180°但时针只转15°' },
@@ -1446,6 +1507,7 @@ const SS = [
       { type:'ss', tag:'高频', question:'C在线段AB上，AC:CB=2:3，M是AC中点，N是CB中点。MN=5，求AB', opts:['AB=8','AB=10','AB=12','AB=15'], correct:1, passMsg:'✅ 设k→AB=10', failMsg:'💡 AC=2k,CB=3k→AB=5k。MC=k,CN=1.5k→MN=2.5k=5→k=2→AB=10' },
       { type:'ss', tag:'高频', question:'正方体的展开图不可能是', opts:['一四一型','二三一型','三三型','五连方'], correct:3, passMsg:'✅ 没有5个连在一起的展开图', failMsg:'💡 正方体展开图共11种：一四一(6)、二三一(3)、二二二(1)、三三(1)。五连方不行！' },
       { type:'ss', tag:'高频', question:'下列哪个是正方体展开图？', opts:['田字形','L形','一四一型','T字形'], correct:2, passMsg:'✅ "一四一"是正方体展开图', failMsg:'💡 展开图口诀：一四一、二三一、二二二、三三。田字、L形、T字都不是' },
+      { type:'ss', tag:'高频', question:'正方体展开图如图，"红"字的对面是', opts:['"黄"字', '"蓝"字', '"绿"字', '"白"字'], correct:1, passMsg:'✅ 隔一个正方形的是对面，红→蓝', failMsg:'💡 展开图找对面："隔一个"就是对面。<br>想象折回正方体：红和蓝中间隔一个正方形→<strong>红对蓝</strong><br>口诀：<strong>隔一相对，Z型两端</strong>' },
       // ── 综合题 ──
       { type:'ss', tag:'综合', question:'从O点引三条射线OA、OB、OC，∠AOB=80°，∠BOC=50°，则∠AOC=', opts:['30°或130°','130°','30°','50°'], correct:0, passMsg:'✅ OC在内→30°；OC在外→130°', failMsg:'💡 分类：①OC在∠AOB内→80-50=30°；②OC在外→80+50=130°' },
       { type:'ss', tag:'综合', question:'钟面上3点多少分时时针分针第一次重合？', opts:['16分','16分21秒','16分11秒','15分'], correct:2, passMsg:'✅ 90=5.5x→x≈16.36分=16分22秒', failMsg:'💡 |30×3-5.5x|=0→90-5.5x=0→x≈16.36分=16分22秒' },
@@ -1456,7 +1518,15 @@ const SS = [
       { type:'review', question:'若∠A=60°，则∠A的补角比余角大', opts:['30°','60°','90°','120°'], correct:2, passMsg:'✅ 补角=120°，余角=30°，差=90°', failMsg:'💡 补角=180-60=120°，余角=90-60=30°，120-30=<strong>90°</strong>' },
       { type:'review', question:'线段AB=10，AC=4，M是AC中点，N是BC中点，则MN=', opts:['3','5','7','2'], correct:1, passMsg:'✅ MC=2，BC=6，CN=3，MN=5', failMsg:'💡 AC=4→MC=2；BC=6→CN=3；MN=2+3=<strong>5</strong>' },
       { type:'review', question:'在直线l上取A、B、C三点，AB=5，BC=3，则AC=', opts:['2或8','8','2','无法确定'], correct:0, passMsg:'✅ C在AB间→2；C在AB外→8', failMsg:'💡 分类：①C在A、B之间→5-3=2；②C在B右侧→5+3=8' },
-      { type:'review', question:'钟面上9:30时针与分针的夹角', opts:['90°','105°','75°','120°'], correct:1, passMsg:'✅ |30×9-5.5×30|=|270-165|=105°', failMsg:'💡 公式：\|30h-5.5m\|=\|270-165\|=<strong>105°</strong>' }
+      { type:'review', question:'钟面上9:30时针与分针的夹角', opts:['90°','105°','75°','120°'], correct:1, passMsg:'✅ |30×9-5.5×30|=|270-165|=105°', failMsg:'💡 公式：\|30h-5.5m\|=\|270-165\|=<strong>105°</strong>' },
+      // ── 章末锦囊 ──
+      { type:'ms', icon:'📚', title:'几何图形初步·章末锦囊',
+        kv:[
+          ['🧠 知识树','立体图形(展开图)→线段/射线/直线→角(度分秒)→余角/补角→方位角→钟面角'],
+          ['📝 核心口诀','线段两个点，射线一个点，直线没有点\n两点确定一条直线，两点之间线段最短\n度分秒60进制，借1°换60′\n余角和为90°，补角和为180°\n展开图：一四一、二三一、二二二、三三（共11种）\n对面不相邻，隔一个就是对面'],
+          ['⚠️ 易错TOP3','① 射线AB和BA方向相反→端点不同\n② 度分秒用十进制→60进制！42°18′≠42.18°\n③ 看到"直线"不分类→一定想两种情况'],
+          ['💡 解题通法','双中点→MN=AB/2，C不管在哪\n角平分线→看到平分就÷2\n分类讨论→看到"直线"马上想两种情况\n钟面角公式：\|30h-5.5m\|\n方位角互看：南北交换、东西交换、角度不变']
+        ]},
     ]},
 ];
 
@@ -1471,18 +1541,24 @@ const CP_POS = [
 const SVG_PATH = 'M 180,20 C 320,20 320,120 180,140 C 40,160 40,260 180,280 C 320,300 320,400 180,420 C 40,440 40,520 180,520';
 
 // ===== 状态 =====
-let S = { pts:0, stars:[0,0,0,0], curSS:0, curSeg:0, wrongQ:[], doneQ:[], seenQ:[], viewMode:'normal', wrIdx:0 };
+let S = { pts:0, stars:[0,0,0,0], curSS:0, curSeg:0, wrongQ:[], wrongQMap:{}, doneQ:[], seenQ:[], viewMode:'normal', wrIdx:0, streak:0 };
 function ld() { try { const d=localStorage.getItem('rb2'); if(d){const p=JSON.parse(d);Object.assign(S,p);} }catch(e){} }
 function sv() { try { localStorage.setItem('rb2',JSON.stringify(S)); }catch(e){} }
 ld();
 
+// 调试解锁：在 URL 后加 #debug-unlock 自动解锁全部章节
+if (location.hash === '#debug-unlock') {
+  S.stars = [3,3,3,0]; sv();
+  history.replaceState(null, '', 'index.html');
+}
+
 // ===== DOM =====
 const $ = id => document.getElementById(id);
 const qs = (s,el) => (el||document).querySelector(s);
 const page = id => { document.querySelectorAll('.pg').forEach(p=>p.classList.remove('act')); $(id).classList.add('act'); };
 
 // ===== 导航 =====
-function goMap() { page('pH'); sync(); renderMap(); }
+function goMap() { S.viewMode='normal'; page('pH'); sync(); renderMap(); }
 function goChap(idx) {
   if (idx<0 || idx>3) return;
   if (idx>0 && S.stars[idx-1]===0) return;
@@ -1585,12 +1661,18 @@ document.addEventListener('click', e => {
   if (closest(e.target, '#egBtn')) { stepEg(); return; }
 
   const actEl = closest(e.target, '.act');
-  if (actEl && actEl.classList.contains('show')) { nextSeg(); return; }
+  if (actEl && actEl.classList.contains('show')) {
+    if (S.viewMode === 'wrongReviewSession') { nextWrongInReview(); return; }
+    nextSeg(); return;
+  }
 
   if (closest(e.target, '#pmNt')) { closePodium(); return; }
 
   if (closest(e.target, '#mBtn')) { toggleBGM(); return; }
 
+  if (closest(e.target, '#revStart')) { startWrongReview(); return; }
+  if (closest(e.target, '#revLapBtn')) { startWrongReview(); return; }
+
   const wrRm = closest(e.target, '.wrRm'); if (wrRm) {
     const id = wrRm.getAttribute('data-id'); const wi = S.wrongQ.indexOf(id);
     if (wi>=0) { S.wrongQ.splice(wi,1); if (S.wrIdx>=S.wrongQ.length) S.wrIdx=0; }
@@ -1623,10 +1705,11 @@ document.addEventListener('click', e => {
   }
   if (closest(e.target, '#stgDone')) { renderStgResult(); return; }
   if (closest(e.target, '#bkMapW')) { S.viewMode='normal'; goMap(); return; }
+  if (closest(e.target, '#unlockBtn')) { S.stars=[3,3,3,0]; sv(); goMap(); return; }
   if (closest(e.target, '#clrP')) {
     if (confirm('\u{1F6D1} 确定清除所有进度？本地记录将被清空。')) {
       localStorage.removeItem('rb2');
-      Object.assign(S,{pts:0,stars:[0,0,0,0],curSS:0,curSeg:0,wrongQ:[],doneQ:[],seenQ:[],viewMode:'normal',wrIdx:0});
+      Object.assign(S,{pts:0,stars:[0,0,0,0],curSS:0,curSeg:0,wrongQ:[],wrongQMap:{},doneQ:[],seenQ:[],viewMode:'normal',wrIdx:0,streak:0});
       sv(); goMap();
     }
     return;
@@ -1737,7 +1820,9 @@ function renderSeg() {
   if (!seg) return finishChap();
   const co = $('cCo');
   co.style.animation = 'none'; void co.offsetHeight;
-  $('cGl').textContent = `SS ${S.curSS+1} \u00B7 ${segLabel(seg,S.curSeg)}`;
+  $('cGl').textContent = S.viewMode==='wrongReviewSession'
+    ? `\u{1F3CE}\uFE0F \u{1F4D2} 复习圈 · ${S.wrIdx+1}/${S.wrongQ.length} · ${segLabel(seg,S.curSeg)}`
+    : `🏆 MV1 · 第${S.curSS+1}站 · ${segLabel(seg,S.curSeg)}`;
   $('cTi').textContent = s.emoji+' '+s.title;
   $('cDe').textContent = s.desc;
   const mBtn = $('bkMapBtn');
@@ -1746,6 +1831,7 @@ function renderSeg() {
   else if (seg.type==='stg') renderStg(seg);
   else if (seg.type==='pn') renderPN(seg);
   else if (seg.type==='ss'||seg.type==='review') renderSSeg(seg);
+  else if (seg.type==='ms') renderMS(seg);
   else if (seg.type==='rd') renderRd(seg);
   else if (seg.type==='eg') renderEg(seg);
   co.style.animation = 'fIn 0.35s ease';
@@ -1757,6 +1843,21 @@ function renderKP(seg) {
   initDragModels();
 }
 
+// ===== 章末锦囊 =====
+function renderMS(seg) {
+  let html = `<div class="pn" style="border-left:3px solid #2ecc71;"><div class="kpTitle">${seg.icon||'📚'} ${seg.title}</div>`;
+  (seg.kv||[]).forEach(function(pair){
+    const [key, val] = pair;
+    const lines = val.split('\n');
+    html += `<div style="margin:6px 0;"><span style="font-weight:700;color:#ffd700;">${key}</span><div style="padding:4px 8px;background:rgba(255,255,255,0.03);border-radius:3px;font-size:13px;line-height:1.8;">`;
+    lines.forEach(function(l){ html += `<div>${l}</div>`; });
+    html += `</div></div>`;
+  });
+  html += `<div style="text-align:center;margin-top:14px;"><button class="act show">继续 →</button></div></div>`;
+  $('cCo').innerHTML = html;
+  beep('click');
+}
+
 // ===== 分站赛 =====
 let stgStat = { total:0, done:0, cor:0, wrg:0 };
 function stgReset() {
@@ -1840,7 +1941,11 @@ function renderSSeg(seg) {
     progHtml = `<div class="stgBar" style="margin:0 0 8px"><div class="stgFill" style="width:${pct}%"></div></div><div style="font-size:10px;color:rgba(255,255,255,0.2);margin-bottom:6px;font-family:'Inter',monospace;"><span style="color:#ffd700">${seg.tag}</span> · ${stgStat.done-1}/${stgStat.total} 答 · ${stgStat.cor}✓ ${stgStat.wrg}✗</div>`;
   }
   const tagBadge = seg.tag ? `<span style="display:inline-block;padding:1px 6px;border:1px solid rgba(255,255,255,0.06);border-radius:2px;font-size:9px;font-weight:700;color:rgba(255,255,255,0.3);margin-left:6px;font-family:'Inter',monospace;">${seg.tag}</span>` : '';
-  $('cCo').innerHTML = `${progHtml}<div class="qp"><div class="qn">${qnLabel}${tagBadge}</div>${diag}<div class="qt">${seg.question}</div><div class="qo">${seg.opts.map((o,i)=>`<div class="opt ${done?(i===seg.correct?'pass':(i===sel?'fail':'disabled')):''}" data-idx="${i}"><span class="lb">${lbl[i]}</span>${o}</div>`).join('')}</div><div class="qfb ${done?'show '+(sel===seg.correct?'pass':'fail'):''}">${done?(sel===seg.correct?seg.passMsg:seg.failMsg):''}</div>${done?'<button class="act show">继续 \u2192</button>':''}</div>`;
+  const srsBadge = S.viewMode==='wrongReviewSession' && S.wrongQMap[qid()] && S.wrongQMap[qid()].count > 0
+    ? `<span style="display:inline-block;padding:1px 8px;background:rgba(225,6,0,0.08);border:1px solid rgba(225,6,0,0.1);border-radius:2px;font-size:9px;font-weight:700;color:#e10600;margin-left:6px;font-family:'Inter',monospace;">\u{2716}\u00D7${S.wrongQMap[qid()].count}</span>` : '';
+  const streakHtml = S.streak>=2 && done && sel===seg.correct ? `<div class="radio streak" style="margin-bottom:4px;">${S.streak>=10?'\u{1F451}终极统治':S.streak>=5?'\u{1F3C6}大奖赛全胜':'\u{26A1}最快圈速'} \u00D7 ${S.streak}</div>` : '';
+  const radioHtml = done && seg._radioMsg ? `<div class="radio ${sel===seg.correct?'pass':'fail'}">${seg._radioMsg}</div>` : '';
+  $('cCo').innerHTML = `${progHtml}<div class="qp"><div class="qn">${qnLabel}${tagBadge}${srsBadge}</div>${diag}<div class="qt">${seg.question}</div><div class="qo">${seg.opts.map((o,i)=>`<div class="opt ${done?(i===seg.correct?'pass':(i===sel?'fail':'disabled')):''}" data-idx="${i}"><span class="lb">${lbl[i]}</span>${o}</div>`).join('')}</div><div class="qfb ${done?'show '+(sel===seg.correct?'pass':'fail'):''}">${streakHtml}${radioHtml}${done?(sel===seg.correct?seg.passMsg:seg.failMsg):''}</div>${done?'<button class="act show">继续 \u2192</button>':''}</div>`;
 }
 
 function qid() { return S.curSS+'_'+S.curSeg; }
@@ -1855,17 +1960,50 @@ function renderWrongList() {
     $wl.innerHTML='<div style="text-align:center;padding:40px 20px;color:rgba(255,255,255,0.15);font-size:12px;">\u{1F389} 暂无错题！继续保持！</div>';
     return;
   }
-  $wl.innerHTML=S.wrongQ.map((id,i)=>{
+  $wl.innerHTML = `<div style="margin-bottom:10px;text-align:center;"><button class="hudBtn" id="revStart" style="background:rgba(255,215,0,0.06);border-color:rgba(255,215,0,0.1);color:#ffd700;font-size:12px;padding:10px 20px;">\u{1F3CE}\uFE0F \u{1F4D2} 错题复习圈  \u00D7${S.wrongQ.length}</button></div>`
+    + S.wrongQ.map((id,i)=>{
     const [ci,si]=id.split('_').map(Number);
     const seg=SS[ci].segs[si];
     if (!seg) return '';
+    const wm = S.wrongQMap[id];
+    const failBadge = wm && wm.count > 1 ? ` <span style="color:#e10600;font-size:9px;font-weight:700;">\u{2716}\u00D7${wm.count}</span>` : '';
     return `<div class="wrItem" data-idx="${i}">
-      <div class="wrH">SS${ci+1} · ${SS[ci].emoji} ${SS[ci].title} · <span class="wrLb">${segLabel(seg,si)}</span></div>
+      <div class="wrH">\u{1F3C6} #1 · ${SS[ci].title} · <span class="wrLb">${segLabel(seg,si)}</span>${failBadge}</div>
       <div class="wrQ">${seg.question}</div>
       <div class="wrAct"><button class="wrDo" data-id="${id}">\u{1F504} 重做</button><button class="wrRm" data-id="${id}">\u{2716} 移除</button></div>
     </div>`;
   }).join('');
 }
+function startWrongReview() {
+  if (!S.wrongQ.length) return;
+  S.viewMode = 'wrongReviewSession';
+  S.wrIdx = 0;
+  goToWrongQ(0);
+}
+function goToWrongQ(idx) {
+  if (idx >= S.wrongQ.length) { finishWrongReview(); return; }
+  S.wrIdx = idx;
+  const id = S.wrongQ[idx];
+  const [ci, si] = id.split('_').map(Number);
+  S.curSS = ci; S.curSeg = si;
+  const seg = SS[ci].segs[si];
+  if (seg) { delete seg._answered; delete seg._selected; delete seg._passed; }
+  page('pC'); renderSeg(); sync();
+}
+function nextWrongInReview() {
+  goToWrongQ(S.wrIdx + 1);
+}
+function finishWrongReview() {
+  S.viewMode = 'normal';
+  const cleared = S.wrongQ.length === 0;
+  if (cleared) {
+    sparks(40); beep('win');
+    $('cCo').innerHTML = `<div class="pn" style="text-align:center;border-left:3px solid #ffd700;animation:bounceIn 0.5s ease;"><div style="font-size:48px;margin:8px 0;">\u{1F3C6}</div><h2 style="color:#ffd700;font-size:22px;">\u{1F389} 错题全部清空！</h2><p style="color:rgba(255,255,255,0.3);margin:6px 0 14px;">#1 完美表现！没有任何题能难倒你！</p><button class="act show" onclick="goMap();">返回赛道 \u2192</button></div>`;
+  } else {
+    $('cCo').innerHTML = `<div class="pn" style="text-align:center;border-left:3px solid #e10600;"><div style="font-size:40px;margin:8px 0;">\u{1F3CE}\uFE0F</div><h2 style="color:#fff;font-size:18px;">复习完成！还有 <span style="color:#ffd700;">${S.wrongQ.length}</span> 道待攻克</h2><p style="color:rgba(255,255,255,0.3);margin:6px 0 14px;">下次进站再解决它们！</p><button class="act show" onclick="startWrongReview();">\u{1F504} 再复习一圈</button><button class="act show" onclick="goMap();" style="background:rgba(255,255,255,0.05);margin-left:8px;">返回赛道 \u2192</button></div>`;
+  }
+  page('pC');
+}
 function pickAns(idx) {
   const s = SS[S.curSS];
   const seg = s.segs[S.curSeg];
@@ -1873,16 +2011,51 @@ function pickAns(idx) {
   seg._answered=true; seg._selected=idx; seg._passed=idx===seg.correct;
   const id = qid();
   if (!S.doneQ.includes(id)) S.doneQ.push(id);
+  seg._radioMsg = '';
   if (idx===seg.correct) {
-    S.pts=Math.min(100,S.pts+8); beep('pass'); sparks(6);
+    S.streak++;
+    S.pts=Math.min(100,S.pts+8); beep(S.streak>=3?'hattrick':'pass'); sparks(6);
     const wi = S.wrongQ.indexOf(id);
-    if (wi>=0) { S.wrongQ.splice(wi,1); if (S.wrIdx>=S.wrongQ.length) S.wrIdx=0; }
+    if (wi>=0) {
+      S.wrongQ.splice(wi,1);
+      if (S.wrIdx>=S.wrongQ.length) S.wrIdx=0;
+      // SRS: mark reviewed in wrongQMap
+      if (S.wrongQMap[id]) { S.wrongQMap[id].lastReview = Date.now(); S.wrongQMap[id].reviews = (S.wrongQMap[id].reviews||0) + 1; }
+    }
+    const radioMsgs = [
+      '\u{1F4FB} 干得漂亮 Max！这圈完美！',
+      '\u{1F4FB} 最快圈速！+8 PTS',
+      '\u{1F4FB} Great driving! 继续保持！',
+      '\u{1F4FB} P1! P1! 拉开差距！',
+      '\u{1F4FB} 哇！教科书般的操作！',
+      '\u{1F3CE}\uFE0F 冲刺！无人能挡！'
+    ];
+    seg._radioMsg = radioMsgs[Math.floor(Math.random()*radioMsgs.length)];
+    if (S.streak===3) seg._radioMsg = '\u{1F3BA} HAT TRICK! 连续三站冠军！\u{1F3C6}';
+    else if (S.streak===5) seg._radioMsg = '\u{1F451} GRAND SLAM! 包办最快圈速！\u{2728}';
+    else if (S.streak===10) seg._radioMsg = '\u{1F680} \u2716\uFE0F 就是统治！VERSTAPPEN 不可阻挡！';
   } else {
+    S.streak=0;
     beep('fail');
-    if (!S.wrongQ.includes(id)) S.wrongQ.push(id);
+    if (!S.wrongQ.includes(id)) { S.wrongQ.push(id); }
+    // SRS: track wrong attempt
+    if (!S.wrongQMap[id]) S.wrongQMap[id] = { count:0, lastWrong:0, lastReview:0, reviews:0 };
+    S.wrongQMap[id].count = (S.wrongQMap[id].count||0) + 1;
+    S.wrongQMap[id].lastWrong = Date.now();
+    const radioMsgs = [
+      '\u{1F4FB} BOX BOX — 进站换胎修正！',
+      '\u{1F4FB} 别急 #1，下个弯道超回来！',
+      '\u{1F4FB} 练习赛试错而已，正赛加油！',
+      '\u{1F4FB} 失误是升级的燃料\u{1F527}',
+      '\u{1F4FB} 稳住！#1 这圈不算，重新来！'
+    ];
+    seg._radioMsg = radioMsgs[Math.floor(Math.random()*radioMsgs.length)];
   }
   sv(); renderSeg(); sync();
   const hb=$('hintBadge'); if(hb)hb.textContent=S.wrongQ.length||'';
+  // toggle review lap button
+  const $revBtn = $('revLapBtn');
+  if ($revBtn) $revBtn.style.display = S.wrongQ.length ? 'inline-flex' : 'none';
 }
 
 function renderRd(seg) {
@@ -1946,9 +2119,22 @@ function finishChap() {
 
   const pos = ['DNF','P10','P5','P1'];
   const cups = ['\u{1F3C1}','\u{1F949}','\u{1F948}','\u{1F3C6}'];
-  const titles = ['未完赛','P10 \u2014 积分区外','P5 \u2014 得分','SS WIN \u2014 冠军！'];
-  const msgs = ['再练一圈，下个赛段复仇','继续 push，争取更好成绩','差一点就完美了！','VERSTAPPEN 模式！冲向下一个赛段'];
-  const nextTxt = S.curSS < 3 && S.stars[S.curSS] > 0 ? '驶向下一站 \u2192' : '返回赛道';
+  const titles = ['未完赛','P10 \u2014 积分区外','P5 \u2014 得分','#1 WIN \u2014 世界冠军！'];
+  const msgs = ['再练一圈，下个赛段复仇','继续 push，#1 争取更好成绩','差一点就完美了！#1 下次碾压！','#1 VERSTAPPEN 模式！冲向下一个赛段'];
+  const radioMsgs = [
+    '\u{1F4FB} DNF... #1 下站必争！',
+    '\u{1F4FB} P10，还有很大提升空间！',
+    '\u{1F4FB} P5领奖台！#1 正在逼近！',
+    '\u{1F4FB} #1 Max: \u201CSimply simply lovely!\u201D \u{1F3C6}'
+  ];
+  const maxQuotes = [
+    '',
+    '',
+    '',
+    '\u201C只要你不停push，总会到顶。\u201D \u2014 Max Verstappen'
+  ];
+  const nextTxt = S.curSS < 3 && S.stars[S.curSS] > 0 ? '驶向下一站 \u2192'
+    : (S.curSS >= 3 && S.stars[S.curSS] >= 3 ? '\u{1F3C6} 世界冠军！重返赛道' : '返回赛道');
 
   $('pmN').textContent = pos[stars];
   $('pmC').textContent = cups[stars];
@@ -1957,15 +2143,26 @@ function finishChap() {
   $('pmXp').textContent = '+'+stars*5+' PTS';
   $('pmMs').textContent = msgs[stars];
   $('pmNt').textContent = nextTxt;
+  const $pmR = $('pmRadio');
+  $pmR.textContent = radioMsgs[stars];
+  $pmR.className = 'radio ' + (stars>=2?'pass':stars===1?'fail':'');
+  $pmR.style.display = stars > 0 ? 'inline-flex' : 'none';
+  // Max quote for 3-star
+  const $pmQ = document.getElementById('pmQ');
+  if ($pmQ) $pmQ.textContent = maxQuotes[stars];
+  // Show checkered flag for 3-star
+  const $chk = $('pmChk');
+  if ($chk) $chk.style.opacity = stars===3 ? '0.06' : '0';
   $('po').classList.add('show');
 
-  // big confetti
-  sparks(50);
+  // big confetti — branded colors for 3-star
+  sparks(stars===3?80:50);
   beep(stars===3?'win':'pass');
 }
 
 function closePodium() {
   $('po').classList.remove('show');
+  S.streak=0;
   const nextIdx = S.curSS + 1;
 
   if (nextIdx < 4 && S.stars[S.curSS] > 0) {
@@ -2045,6 +2242,25 @@ function sync() {
   const done = S.stars.filter(s=>s>0).length;
   $('hStage').textContent = Math.min(done+1,4)+'/4';
   $('hPts').textContent = S.pts;
+  // streak display
+  const $sD = $('streakD');
+  if ($sD) {
+    if (S.streak >= 2) {
+      const labels = ['','','\u{26A1}','\u{26A1}','\u{1F525}','\u{1F525}','\u{1F3C6}','\u{1F3C6}','\u{1F451}','\u{1F451}','\u{1F680}'];
+      const label = labels[Math.min(S.streak, labels.length-1)];
+      $sD.className = 'streakDisplay on';
+      $sD.innerHTML = `${label} #1 \u00D7${S.streak}连对`;
+    } else { $sD.className = 'streakDisplay'; $sD.innerHTML = ''; }
+  }
+  // lap counter
+  const $lC = $('lapCnt');
+  if ($lC) {
+    const s = SS[S.curSS];
+    const qs = s.segs.filter(function(seg){return seg.type==='ss'||seg.type==='review'||seg.type==='rd';});
+    const total = qs.length;
+    const doneCount = qs.filter(function(seg){return seg._answered;}).length;
+    $lC.innerHTML = `\u{1F3CE}\uFE0F #1 LAP ${Math.min(doneCount+1,total)}/${total}`;
+  }
 }
 
 // ===== 学习总览 =====
@@ -2091,6 +2307,7 @@ function beep(t) {
     if (t==='pass') { [523,659,784].forEach((f,i)=>{const o=ctx.createOscillator(),g=ctx.createGain();o.connect(g);g.connect(ctx.destination);g.gain.value=0.03;o.frequency.value=f;o.start(ctx.currentTime+i*0.1);o.stop(ctx.currentTime+i*0.1+0.1);}); }
     else if (t==='fail') { const o=ctx.createOscillator(),g=ctx.createGain();o.type='sawtooth';o.connect(g);g.connect(ctx.destination);g.gain.value=0.015;o.frequency.setValueAtTime(200,ctx.currentTime);o.frequency.setValueAtTime(160,ctx.currentTime+0.1);o.start(ctx.currentTime);o.stop(ctx.currentTime+0.2); }
     else if (t==='win') { [523,587,659,784,1047].forEach((f,i)=>{const o=ctx.createOscillator(),g=ctx.createGain();o.connect(g);g.connect(ctx.destination);g.gain.value=0.03;o.frequency.value=f;o.start(ctx.currentTime+i*0.08);o.stop(ctx.currentTime+i*0.08+0.12);}); }
+    else if (t==='hattrick') { [523,659,784,1047,1319].forEach((f,i)=>{const o=ctx.createOscillator(),g=ctx.createGain();o.connect(g);g.connect(ctx.destination);g.gain.value=0.035;o.frequency.value=f;o.start(ctx.currentTime+i*0.06);o.stop(ctx.currentTime+i*0.06+0.15);}); }
     else { const o=ctx.createOscillator(),g=ctx.createGain();o.connect(g);g.connect(ctx.destination);g.gain.value=0.015;o.frequency.value=440;o.start(ctx.currentTime);o.stop(ctx.currentTime+0.04); }
   } catch(e) {}
 }
@@ -2256,7 +2473,7 @@ function stopBGM() {
 // ===== 粒子 =====
 function sparks(n) {
   const c = $('pyro');
-  const cs = ['#e10600','#ffd700','#e10600','#fff','#ffd700','#2ecc71'];
+  const cs = ['#e10600','#ffd700','#1e41a0','#fff','#ffd700','#e10600','#1e41a0','#2ecc71'];
   for(let i=0;i<n;i++){const e=document.createElement('div');e.className='sp';e.style.left=(10+Math.random()*80)+'%';e.style.top='-5px';e.style.background=cs[Math.floor(Math.random()*cs.length)];e.style.width=e.style.height=(2+Math.random()*4)+'px';e.style.animationDuration=(1.5+Math.random()*2)+'s';e.style.animationDelay=(Math.random()*0.5)+'s';c.appendChild(e);setTimeout(()=>e.remove(),4000);}
 }
 
diff --git a/几何章_解锁.png b/几何章_解锁.png
new file mode 100644
index 0000000..d0c1b5c
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