:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box;margin:0}html,body,#root{min-height:100vh;background:#0a0a0a;color:#fafafa}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem;gap:.75rem}h1{font-size:1.75rem;font-weight:700;letter-spacing:-.02em}.game{display:flex;flex-direction:column;align-items:center;gap:.4rem}.captured{display:flex;flex-wrap:wrap;gap:.15rem;min-height:1.5rem;max-width:min(480px,calc(100vw - 3rem));justify-content:center}.cap{font-size:1.1rem;opacity:.6}.board{display:grid;grid-template-columns:repeat(8,1fr);width:min(480px,calc(100vw - 3rem));aspect-ratio:1;border:2px solid rgba(255,255,255,.12);border-radius:4px;overflow:hidden;-webkit-user-select:none;user-select:none}.sq{position:relative;display:flex;align-items:center;justify-content:center;cursor:pointer}.sq.lt{background:#f0d9b5}.sq.dk{background:#b58863}.sq.sel.lt{background:#829769}.sq.sel.dk{background:#646d40}.sq.last.lt{background:#cdd26a}.sq.last.dk{background:#aaa23a}.sq.chk{background:#e74c3c!important}.lbl{position:absolute;font-size:.6rem;font-weight:700;pointer-events:none;line-height:1}.lbl.rank{top:2px;left:3px}.lbl.file{bottom:2px;right:3px}.lbl.lt{color:#b58863}.lbl.dk{color:#f0d9b5}.pc{font-size:min(3rem,calc((100vw - 3rem)*.10625));line-height:1;z-index:2}.pc.white{color:#fff;filter:drop-shadow(0 1px 2px rgba(0,0,0,.5))}.pc.black{color:#1a1a1a;filter:drop-shadow(0 1px 0 rgba(255,255,255,.15))}.dot{position:absolute;width:30%;height:30%;border-radius:50%;background:#0003;z-index:1;pointer-events:none}.ring{position:absolute;top:4px;right:4px;bottom:4px;left:4px;border-radius:50%;border:5px solid rgba(0,0,0,.2);z-index:1;pointer-events:none}.status-bar{display:flex;align-items:center;gap:1rem}.status{font-size:1rem;font-weight:600}.status.check{color:#e74c3c}.status.over{color:#2ecc71}.btn{padding:.4rem .9rem;border:1px solid rgba(255,255,255,.15);border-radius:.5rem;background:#ffffff0d;color:#fafafa;cursor:pointer;font-size:.85rem;font-family:inherit}.btn:hover{background:#ffffff1a}.history{max-width:min(480px,calc(100vw - 3rem));width:100%;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8rem;color:#fff9;line-height:1.8;display:flex;flex-wrap:wrap;gap:0 .6rem}.hpair{white-space:nowrap}.hnum{color:#ffffff59;margin-right:.15rem}.hmove{margin-right:.3rem}.promo-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100}.promo-dialog{background:#1a1a1a;border:1px solid rgba(255,255,255,.15);border-radius:.75rem;padding:1.5rem 2rem;text-align:center}.promo-dialog p{margin-bottom:1rem;font-size:1rem}.promo-pieces{display:flex;gap:.5rem;justify-content:center}.promo-btn{font-size:2.5rem;padding:.4rem .6rem;border:1px solid rgba(255,255,255,.15);border-radius:.5rem;background:#ffffff0d;color:#fafafa;cursor:pointer;line-height:1;font-family:inherit}.promo-btn:hover{background:#ffffff26}