.mc-board {
  display: flex; flex-direction: column; gap: 10px; align-items: center;
  width: min(380px, 94vw); margin: 0 auto;
}
.mc-row { display: flex; align-items: center; gap: 8px; }
.mc-pit {
  width: 46px; height: 46px; border-radius: 50%;
  background: #f1f5f9; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px; cursor: pointer; user-select: none;
  border: 2px solid #e2e8f0; transition: border .12s, background .12s;
}
.mc-pit.mine { border-color: #2563eb; background: #e0ecff; }
.mc-pit.empty { opacity: .5; }
.mc-store {
  width: 46px; height: 96px; border-radius: 22px;
  background: #1e293b; color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 22px; flex-direction: column;
}
.mc-store small { font-size: 10px; font-weight: 600; opacity: .7; }