.checkers-board{display:grid;grid-template-columns:repeat(8,1fr);width:min(92vw,520px);margin:auto;border:2px solid #303b54}.checker-cell{aspect-ratio:1;border:0;padding:7%;display:grid;place-items:center}.checker-cell.light{background:#192238}.checker-cell.dark{background:#090e19}.checker-cell.target{box-shadow:inset 0 0 0 4px var(--lime)}.checker-piece{width:82%;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;font-style:normal;font-size:clamp(10px,2.5vw,22px);box-shadow:0 5px 10px #0008}.checker-piece.p{background:var(--lime);color:#111}.checker-piece.c{background:var(--violet);color:#fff}.checker-piece.king{border:3px solid var(--orange)}.orbit-canvas{display:block;width:min(100%,640px);height:auto;touch-action:none;margin:auto;border:1px solid var(--line);background:#070c18}.merge-next{text-align:center;margin-bottom:8px;color:var(--muted)}.merge-next strong{color:var(--lime);font-size:22px}.merge-controls,.merge-board{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;width:min(92vw,410px);margin:auto}.merge-controls{margin-bottom:6px}.merge-controls button{padding:7px;border:1px solid var(--line);background:#151d2b;color:var(--lime)}.merge-cell{aspect-ratio:1;display:grid;place-items:center;background:#111927;border:1px solid #28344b;font-style:normal;font-weight:800;font-size:clamp(14px,4vw,25px)}.merge-cell.v2{color:#9bc4ff}.merge-cell.v4{color:var(--lime)}.merge-cell.v8{color:#ffe26b}.merge-cell.v16{color:#ff9f43}.merge-cell.v32{color:#ff5e91}.merge-cell.v64{color:#fff;background:var(--violet);box-shadow:0 0 15px #7b4dff77}.sliding-board{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;width:min(88vw,430px);margin:auto}.sliding-cell{aspect-ratio:1;border:1px solid #3a4965;background:linear-gradient(145deg,#202c42,#121a29);color:var(--lime);font:800 clamp(18px,5vw,30px) 'Chakra Petch';box-shadow:inset 0 0 14px #0004}.sliding-cell.empty{visibility:hidden}@media(max-width:520px){.checker-cell{padding:4%}.checker-piece{width:90%}.merge-controls,.merge-board{gap:4px}}