.yj-board { display: grid; grid-template-columns: repeat(6, 1fr); gap: 3px; width: min(92vw, 330px); margin: 12px auto; aspect-ratio: 1 / 1; }
.yj-cell { border-radius: 4px; background: #fff; border: 1px solid #c8ccd6; display: flex; align-items: center; justify-content: center; font-size: 15px; cursor: pointer; user-select: none; }
.yj-cell.black { background: #2b2f38; color: #fff; }
.yj-cell.arrow { background: #ffe9a8; cursor: default; font-weight: 700; }