.ms-board {
  display: grid;
  grid-template-columns: repeat(3, 56px);
  gap: 4px;
  margin: 8px auto;
  width: max-content;
}
.ms-cell {
  width: 56px;
  height: 56px;
  background: #fff;
  border: 2px solid #cdd6e2;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: #25323f;
  cursor: pointer;
  user-select: none;
}
.ms-cell.sel { border-color: #4d96ff; box-shadow: 0 0 0 3px rgba(77,150,255,.25); }
.ms-cell.given { color: #888; background: #f3f5f9; }
.ms-pad {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  max-width: 280px;
  margin: 8px auto;
}
.ms-num {
  padding: 10px 0;
  font-size: 18px;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  background: #eef3f9;
  color: #25323f;
  cursor: pointer;
}
.ms-num.clear { background: #ffe1e1; color: #c0392b; }
.ms-num:active { transform: scale(.95); }