:root{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#263d35;background:#faf8f2;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0}button,select{font:inherit;color:inherit}button,summary,select{cursor:pointer}button:disabled{cursor:default;opacity:.4}a{color:inherit}button:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #125b91;outline-offset:3px}main{width:min(100%,640px);margin:0 auto;padding:24px 20px}.header{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-bottom:20px;border-bottom:1px solid #d9ddd3}.wordmark{text-decoration:none;font-size:24px;font-weight:750;letter-spacing:-1px;display:flex;align-items:center;gap:8px}.brand-icon{display:inline-flex;width:30px}.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:1.6px;font-weight:650}.header>.eyebrow{text-align:right;max-width:120px;line-height:1.6}.intro{padding:32px 0 24px}.intro>.eyebrow{color:#54674e;margin:0 0 14px}h1{font-family:ui-serif,Georgia,serif;font-size:clamp(32px,7vw,46px);line-height:1.08;font-weight:500;letter-spacing:-1.4px;margin:0 0 16px}.intro>p:last-child{font-size:14px;line-height:1.65;margin:0;color:#526259}.board-heading{display:flex;align-items:baseline;justify-content:space-between;margin:0 0 14px}h2{font-size:16px;font-weight:650;margin:0}#timer{font-size:13px;font-variant-numeric:tabular-nums;color:#526259}.board{display:grid;grid-template-columns:repeat(var(--size),minmax(0,1fr));aspect-ratio:1;width:100%;border:2px solid #516052;border-radius:10px;overflow:hidden;background:#516052}.cell{position:relative;display:grid;place-items:center;padding:0;min-width:0;min-height:0;aspect-ratio:1;background:var(--region-color);border:0;border-top:1px solid #263d3559;border-left:1px solid #263d3559;color:#263d35;-webkit-tap-highlight-color:transparent}.cell.edge-top{border-top:2px solid #516052}.cell.edge-bottom{border-bottom:2px solid #516052}.cell.edge-left{border-left:2px solid #516052}.cell.edge-right{border-right:2px solid #516052}.cell svg{width:62%;height:62%}.cell .excluded-icon{font-size:clamp(18px,5vw,34px);font-weight:350;line-height:1}.cell.conflict{color:#8b1524;box-shadow:inset 0 0 0 3px #a72334}.cell.conflict:after{content:"!";position:absolute;top:2px;right:3px;font-size:13px;font-weight:800}.cell:focus-visible{outline-offset:-5px;z-index:1}.interaction{color:#526259;font-size:12px;line-height:1.6;margin:12px 0}.status{margin:0 0 18px;background:#edf0e6;border-radius:8px;padding:12px 14px;font-size:13px;line-height:1.55;min-height:44px}.status.warning{background:#f9e5e6;color:#8b1524}.status.success{background:#dce8cd;font-weight:650}.controls{display:grid;gap:12px}.puzzle-picker{display:grid;gap:6px}.puzzle-picker label{font-size:11px;text-transform:uppercase;letter-spacing:1px;font-weight:650}select{background:#fffdf8;border:1px solid #aeb8ac;border-radius:8px;width:100%;min-width:0;padding:12px;font-size:13px;min-height:44px}.control-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.control-row button{background:transparent;border:1px solid #aeb8ac;border-radius:8px;min-height:44px;font-size:13px;padding:8px}.next-button{display:flex;justify-content:space-between;align-items:center;background:#263d35;color:#faf8f2;border:0;border-radius:8px;padding:14px 16px;font-size:14px;min-height:48px}.rules{margin:24px 0 0;border-top:1px solid #d9ddd3;border-bottom:1px solid #d9ddd3;padding:16px 0;font-size:13px;line-height:1.65}.rules summary{font-weight:650}.rules ol{padding-left:24px}footer{font-size:11px;line-height:1.6;color:#526259;margin-top:24px;text-align:center}.storage-notice{font-size:12px;line-height:1.6;color:#8b1524}@media(min-width:600px){main{padding:32px 40px}.intro{padding:40px 0 30px}}@media(hover:hover){.cell:hover{filter:brightness(.97)}.control-row button:not(:disabled):hover{background:#edf0e6}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important}}