.dual-rules {
  list-style: none;
  padding: 0;
  margin: 8px 0;
  font-size: 14px;
  line-height: 1.7;
}

.dual-rules li::before {
  content: "→ ";
  color: var(--accent);
  font-weight: 700;
  margin-right: 4px;
}

.dual-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  aspect-ratio: 1;
  margin: 0 auto 20px;
  max-width: 380px;
  padding: 16px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 32px;
  box-shadow: 0 0 80px 4px color-mix(in srgb, var(--accent) 13%, transparent);
}

.dual-cell {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  transition: background 0.12s, border-color 0.12s, box-shadow 0.12s, transform 0.12s;
}

.dual-cell.active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 38px color-mix(in srgb, var(--accent) 62%, transparent);
  animation: cell-appear 0.22s ease-out;
}

.dual-cell.center {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--text-dim);
  background: transparent;
  border-color: transparent;
  pointer-events: none;
}

.dual-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 8px;
}

.dual-btn {
  background: var(--bg-card);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 14px;
  padding: 18px 14px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.1s;
  text-align: center;
}

.dual-btn:hover { border-color: var(--accent-dim); }
.dual-btn:active { transform: scale(0.97); }
.dual-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.dual-btn.good {
  background: rgba(74, 222, 128, 0.25);
  border-color: var(--good);
}

.dual-btn.bad {
  background: rgba(228, 74, 74, 0.25);
  border-color: var(--bad);
}

.dual-btn.armed {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 45%, transparent);
}

.dual-btn-label {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 1px;
}

.dual-btn-key {
  display: inline-block;
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: monospace;
}

.result-detail {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 14px;
  line-height: 1.5;
  text-align: left;
}

.result-detail strong { color: var(--text); }