*{box-sizing:border-box}body{margin:0;background:#efede5;color:#303e35;font:14px system-ui,-apple-system,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}header,footer{max-width:1320px;margin:auto;padding:24px 35px;display:flex;align-items:center;justify-content:space-between;font-size:12px}header{border-bottom:1px solid #d7dbcf}.brand{letter-spacing:3px;font-size:13px}.brand b{color:#778a63}button,select{font:inherit}button{cursor:pointer;border:1px solid #cbd2c0;background:#f8f8f0;color:#455b43;border-radius:7px;padding:10px 13px;font-size:12px}button:hover{background:#e0e6d5}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #a77f40;outline-offset:3px}main{max-width:1320px;margin:auto;padding:0 35px 35px}.intro{display:flex;justify-content:space-between;align-items:center;padding:34px 0 27px}small{font-size:9px;letter-spacing:2px;color:#83906e;font-weight:700}h1{font:44px Georgia;margin:12px 0 8px;letter-spacing:-1px}p{color:#7c8777;line-height:1.7}.intro p{margin:0}.engine-badge{font-size:11px;color:#6f8067;background:#e4e8dc;border-radius:30px;padding:12px 17px}.engine-badge i{display:inline-block;width:6px;height:6px;background:#799562;border-radius:50%;margin-right:7px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:25px}.board-card{background:#d9ded0;border:1px solid #c6cebc;border-radius:16px;overflow:hidden}.board-top,.board-bottom{display:flex;align-items:center;justify-content:space-between;padding:18px 23px;font-size:10px;letter-spacing:1.5px;color:#68745d}.board-bottom{padding-bottom:8px}.board-bottom button{font-size:10px;padding:7px 9px;background:transparent}.board-help{font-size:10px;text-align:center;padding:0 15px}#board{width:100%;aspect-ratio:1.15;position:relative;touch-action:manipulation}#board canvas{display:block;width:100%;height:100%;cursor:pointer}aside{display:flex;flex-direction:column;gap:18px}.status-card,.tools,.history{border:1px solid #d6dbce;border-radius:12px;padding:22px;background:#faf9f2}h2{font:27px Georgia;margin:13px 0}.status-card p{font-size:12px;margin-bottom:0}#engine-status{font-size:11px;margin-top:15px;color:#6f825e}#engine-status.error{color:#a24738}select{display:block;width:100%;padding:11px 8px;margin:8px 0 12px;border:1px solid #cfd8c6;border-radius:6px;background:#fffef8;color:#3c563d}.tools label{font-size:11px;color:#718267}.primary{background:#3f6046;color:#fff;border-color:#3f6046}.primary:hover{background:#507754}.tools>.primary{width:100%}.button-row{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.button-row button{flex:1}#save-status{font-size:10px;margin-bottom:0}.history>div{display:flex;justify-content:space-between;align-items:center;gap:8px}h3{font-size:12px;font-weight:600;margin:0}.history span{font-size:10px;color:#8b967f}#moves{max-height:200px;overflow:auto;padding:0;list-style:none;font:13px monospace;margin-bottom:0}#moves li{display:grid;grid-template-columns:30px 1fr 1fr;padding:7px 3px;border-bottom:1px solid #e6e8df}#moves li span{font:inherit;color:#50644b}#empty{font-size:11px}footer{border-top:1px solid #d7dbcf;color:#8a947e;gap:20px}dialog{width:min(430px,92vw);border:1px solid #d0d9c4;border-radius:18px;padding:28px;background:#fbfaf2;color:#344732;box-shadow:0 25px 100px #0004}dialog::backdrop{background:#21372a99;backdrop-filter:blur(4px)}dialog label{display:block;font-size:12px;margin-top:15px}dialog p{font-size:11px}dialog button{margin-top:8px}[hidden]{display:none!important}.fallback{padding:40px;text-align:center;line-height:1.8}.licenses{max-width:850px;margin:30px auto;padding:25px;line-height:1.8}.licenses a{color:#356348;text-decoration:underline}@media(max-width:900px){.layout{grid-template-columns:minmax(0,1fr) 245px;gap:15px}main{padding:0 20px 25px}aside>section{padding:17px}.board-top,.board-bottom{padding:14px 12px}.board-bottom{letter-spacing:0}.board-bottom button{padding:7px 5px}}@media(max-width:700px){header,footer{padding:19px 16px}.brand{font-size:10px;letter-spacing:1.5px}main{padding:0 12px 25px}.intro{padding:25px 5px}.intro h1{font-size:35px}.intro p{font-size:12px}.engine-badge{display:none}.layout{grid-template-columns:1fr}#board{aspect-ratio:1}aside{display:grid;grid-template-columns:1fr 1fr;gap:12px}.history{grid-column:1/-1}.status-card h2{font-size:22px}.board-help{font-size:9px}footer{font-size:10px}.tools .button-row{flex-direction:column}}@media(max-width:370px){aside{grid-template-columns:1fr}}

dialog .check{display:flex;align-items:center;gap:10px}dialog .check input{width:17px;height:17px;accent-color:#3f6046}dialog{max-height:90vh;overflow-y:auto}#rules-summary{color:#4d6541;font-weight:600}