.ck-board {
  display: grid;
  grid-template-columns: repeat(8, 44px);
  gap: 0;
  margin: 8px auto;
  width: max-content;
  border: 4px solid #4a3b2a;
  border-radius: 8px;
  overflow: hidden;
}
.ck-cell {
  width: 44px;
  height: 44px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
}
.ck-cell.light { background: #e9d3a8; }
.ck-cell.dark { background: #b07a43; }
.ck-cell.sel { box-shadow: inset 0 0 0 3px #ffd93d; }
.ck-cell.dot::after {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(40,160,80,.7);
  position: absolute;
}
.ck-piece {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  box-shadow: 0 2px 3px rgba(0,0,0,.35), inset 0 2px 4px rgba(255,255,255,.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 900;
  color: #fff;
  cursor: pointer;
}
.ck-piece.r { background: radial-gradient(circle at 35% 30%, #ff7b7b, #d63031); }
.ck-piece.b { background: radial-gradient(circle at 35% 30%, #5a6b7d, #2d3a4a); }
.ck-piece.king::after { content: "♔"; }
.ck-score { text-align: center; color: #25323f; font-weight: 700; }