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6px)}.number.cleared{background:transparent;color:#526f7b;border-style:dashed;border-color:#92afb9;box-shadow:none;font-size:24px}.number.hinted{outline:3px dashed var(--blue);outline-offset:-5px}.pair-mark{position:absolute;top:3px;left:6px;font-size:12px;line-height:16px;font-weight:750}.selection{font-size:14px;color:var(--quiet);line-height:1.5;margin:17px 0 0}.selection:empty{display:none}.status{margin:17px 0;font-size:15px;line-height:1.5;min-height:0}.status:empty{display:none}.status.complete{font:600 34px/1.2 Georgia,serif;margin:38px 0;color:var(--blue)}.status.error{color:#8c291a;border-left:3px solid var(--accent);padding-left:12px}.actions{display:flex;gap:8px;margin-top:22px;flex-wrap:wrap}.actions .primary{margin-left:auto}.hint-box{margin-top:20px;border-left:3px solid var(--blue);padding:1px 0 2px 14px;line-height:1.5}.hint-actions,.dialog-actions{display:flex;gap:8px;flex-wrap:wrap}.small,details{font-size:14px;color:var(--quiet);line-height:1.55}.small{margin:16px 0}details{margin-top:18px}summary{cursor:pointer;min-height:44px;display:flex;align-items:center;gap:8px}summary:before{content:"+";font-weight:800}details[open]>summary:before{content:"−"}details p{margin:5px 0 14px}#play-today{margin-top:20px}.save-problem{margin-top:22px;border:1px solid var(--accent);padding:14px;background:#fff3e9}.save-problem p{line-height:1.5}pre{white-space:pre-wrap;overflow-wrap:anywhere}footer{border-top:1px solid #bdcfd5;font-size:13px}dialog{width:min(440px,calc(100% - 28px));color:var(--ink);border:1px solid #486a79;border-radius:9px;padding:24px;background:#f7faf9}dialog::backdrop{background:#0e2d3bab}dialog h2{font:600 26px Georgia,serif;margin:0 0 14px}dialog p{line-height:1.6}.dialog-actions{margin-top:24px}.skip{position:absolute;left:-9999px;top:0}.skip:focus{left:14px;top:8px;padding:12px;background:white;z-index:10}.guide{max-width:700px}.guide h2{font:600 25px/1.3 Georgia,serif;margin-top:30px}.guide p,.guide li{line-height:1.7}.guide li{margin:9px 0}.worked{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;max-width:360px;margin:22px 0}.worked span{background:var(--tile);border:1px solid var(--line);padding:16px 4px;text-align:center;font-size:28px;font-variant-numeric:tabular-nums}.worked .marked{border:2px solid var(--accent);text-decoration:underline}.guide .note{border-left:3px solid var(--blue);padding-left:16px}@media(max-width:420px){header,footer{padding:12px 14px}main{padding:0 14px;margin-top:8px}.heading{margin-bottom:16px}h1{margin-bottom:8px}.heading p{font-size:14px}.toolbar{gap:9px}.size-label{font-size:13px;gap:6px}.modes button{padding:7px 12px}select{max-width:160px;font-size:13px}.edition-line{margin:15px 0 10px}.board-area{padding:10px}.board,.board-row{gap:7px}.number{min-height:56px}.actions{gap:7px}.actions button{padding:8px 12px}.actions .primary{margin-left:0}.brand{font-size:24px}.status{font-size:14px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media(forced-colors:active){.number.selected{border:3px solid Highlight}.number.hinted{outline:3px dashed Highlight}.number.cleared{border:1px dashed GrayText}.number{box-shadow:none}.board-area{box-shadow:none}.modes button[aria-pressed=true]{border-bottom:3px solid Highlight}.pair-mark{color:ButtonText}}