Special math border

Author: willyblah

game.js

@@ -699,6 +699,7 @@
       const count = userData.ownedTactics[k] || 0;
       const btn = document.createElement('div');
       btn.className = 'tactic-btn';
+      if (k === 'Math') btn.style.border = '2px solid green';
       btn.dataset.name = k;
       btn.innerHTML = `<div>${k}</div><div class="skill-count">${count}</div>`;
       attachTooltip(btn, t.desc);
@@ -756,6 +757,7 @@
       const count = battlePlayerTactics[k] || 0;
       const btn = document.createElement('div');
       btn.className = 'tactic-btn';
+      if (k === 'Math') btn.style.border = '2px solid green';
       btn.dataset.name = k;
       btn.innerHTML = `<div>${k}</div><div class="skill-count">${count}</div>`;
       if (k !== "Emergency Platform") btn.addEventListener('click', () => useTacticByName(k));
@@ -784,6 +786,7 @@
       const t = TACTICS[k];
       const row = document.createElement('div');
       row.className = 'shop-item';
+      if (k === 'Math') row.style.border = '2px solid green';
       row.innerHTML = `<div><b>${k}</b><div style="font-size:13px;color:var(--muted)">${t.desc}</div></div>
         <div style="display:flex;gap:8px;align-items:center">
         <div style="color:var(--muted);font-weight:600">${userData.profile === 'Villager' ? Math.ceil(t.price / 2) : t.price}</div>

math.txt

@@ -143,7 +143,7 @@ a: 4x(x - 1)(1 - x)
 b: (2x^2 - 2x)(2 - 2x)
 C: -4x(x - 1)^2
 
-4,5: If P(x) = (x^2 + 5x + 6)(x^2 + 3x + 2), coefficient of x^3 = ?
+4,5: What is the coefficient of x^3 in (x^2 + 5x + 6)(x^2 + 3x + 2)?
 A: 8
 B: 15
 c: 21