:root{--bg:#f7f7f5;--surface:#fff;--text:#1d1d1f;--muted:#6b6b72;--border:#d3d3d8;--strong-border:#8e8e96;--given-bg:#e9e9ec;--key-bg:#e2e2e6;--accent:#178a5b;--accent-soft:#d8f0e4;--accent-text:#0f6b45;--on-accent:#fff;--error:#b42318;--backdrop:#00000073;--gap:6px;--bead:max(30px, min(64px, calc((100vw - 32px - 5 * var(--gap) - 12px) / 6), calc((100dvh - 427px) / 5)));--radius:6px;--logo-header-size:1.5rem;--logo-help-size:1.6rem;--bead-string:#d5d9de;--bead-given-bg:#eceef0;--bead-given-text:#3a3f45;--bead-empty-bg:#fff;--bead-empty-border:#c9ced4;--bead-done-border:#8c939b;--bead-text:#1f2328;--bead-active:#1f2328;--link-1:#3f6aae;--link-2:#8f6e12;--link-3:#8550a3;--link-4:#a84e32;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#121214;--surface:#1b1b1e;--text:#f1f1f3;--muted:#9c9ca4;--border:#3a3a40;--strong-border:#6c6c75;--given-bg:#29292e;--key-bg:#2f2f35;--accent:#2fb57a;--accent-soft:#143d2b;--accent-text:#6fdcaa;--on-accent:#08130e;--error:#ff8a7a;--backdrop:#000000a6;--bead-string:#42474e;--bead-given-bg:#2c3035;--bead-given-text:#d3d7dc;--bead-empty-bg:#1b1b1e;--bead-empty-border:#4a5058;--bead-done-border:#8a9099;--bead-text:#f1f1f3;--bead-active:#e6e8eb;--link-1:#5b86c9;--link-2:#d4b04a;--link-3:#a573c4;--link-4:#c97a52}}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#121214;--surface:#1b1b1e;--text:#f1f1f3;--muted:#9c9ca4;--border:#3a3a40;--strong-border:#6c6c75;--given-bg:#29292e;--key-bg:#2f2f35;--accent:#2fb57a;--accent-soft:#143d2b;--accent-text:#6fdcaa;--on-accent:#08130e;--error:#ff8a7a;--backdrop:#000000a6;--bead-string:#42474e;--bead-given-bg:#2c3035;--bead-given-text:#d3d7dc;--bead-empty-bg:#1b1b1e;--bead-empty-border:#4a5058;--bead-done-border:#8a9099;--bead-text:#f1f1f3;--bead-active:#e6e8eb;--link-1:#5b86c9;--link-2:#d4b04a;--link-3:#a573c4;--link-4:#c97a52}@media (width>=520px){:root{--gap:10px}}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--text);margin:0}button{font:inherit;color:inherit;touch-action:manipulation}[hidden]{display:none!important}.app{max-width:520px;min-height:100dvh;padding:0 8px env(safe-area-inset-bottom);flex-direction:column;margin:0 auto;display:flex}.header{grid-template-columns:1fr auto 1fr;align-items:center;padding:6px 4px;display:grid}.title{text-align:center;font-size:var(--logo-header-size);letter-spacing:.08em;text-transform:uppercase;margin:0;font-weight:800}.logo-link-2{color:var(--link-2)}.logo-link-3{color:var(--link-3)}.logo-link-4{color:var(--link-4)}.tm{letter-spacing:0;text-transform:none;margin:.3em 0 0 .1em;font-size:.4em;font-weight:700;line-height:1;position:absolute}.info-strip{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;padding:4px 8px;display:flex}.subtitle{color:var(--muted);margin:0;font-size:.9rem}.header-right{justify-content:flex-end;align-items:center;gap:4px;display:flex}.timer{text-align:right;font-variant-numeric:tabular-nums;min-width:3.2em;font-size:1.05rem;font-weight:700}.icon-button{cursor:pointer;background:0 0;border:0;border-radius:50%;place-items:center;width:40px;height:40px;padding:0;display:inline-grid}.icon-button:hover{background:var(--given-bg)}.icon-button svg{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;width:24px;height:24px}.icon-button svg .dot{fill:currentColor}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.main{flex-direction:column;flex:1;justify-content:center;align-items:center;padding:16px 0 8px;display:flex}.start-panel{text-align:center;max-width:320px}.tagline{color:var(--muted);margin:0 0 20px}.tagline-row{align-items:center;gap:4px;display:flex}.start-panel .tagline-row{justify-content:center}.tagline-bead{box-sizing:border-box;border:3px solid var(--link-1);background:var(--bead-empty-bg);width:1.45em;height:1.45em;color:var(--link-1);font-size:calc(var(--logo-header-size) * .8);letter-spacing:0;border-radius:50%;flex:none;justify-content:center;align-items:center;font-style:normal;font-weight:800;line-height:1;display:flex}.help-tagline .tagline-bead{font-size:calc(var(--logo-help-size) * .8)}.tagline-bead>span{text-box:trim-both cap alphabetic}.tagline-text{font-size:15px;font-style:normal;font-weight:500;line-height:1;position:relative;top:0}.modal h2.help-name{font-size:var(--logo-help-size);letter-spacing:.08em;text-transform:uppercase;margin:0 0 4px;font-weight:800}.text-bead{border:3px solid var(--link-1);background:var(--bead-empty-bg);width:1.45em;height:1.45em;color:var(--link-1);letter-spacing:0;vertical-align:.12em;border-radius:50%;place-items:center;margin:0 .05em;font-size:.8em;font-style:normal;font-weight:800;line-height:1;display:inline-grid}.text-bead>span{text-box:trim-both cap alphabetic}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.help-tagline{margin:0 0 20px}.start-meta{color:var(--accent-text);margin:0 0 8px;font-weight:700}.start-lede{margin:0 0 20px;line-height:1.45}.start-note{color:var(--muted);margin:12px 0 0;font-size:.85rem}.primary-button{background:var(--accent);min-width:160px;color:var(--on-accent);cursor:pointer;border:0;border-radius:999px;padding:12px 28px;font-size:1.05rem;font-weight:700}.primary-button:disabled{opacity:.55;cursor:default}.primary-button.wide{width:100%}.board{align-items:center;gap:calc(var(--gap) + 2px);flex-direction:column;display:flex}.row{--row-pad:3px;gap:var(--gap);padding:var(--row-pad);outline-offset:2px;background:0 0;border:0;border-radius:999px;outline:2px solid #0000;display:flex;position:relative}.row:before{content:"";top:50%;left:calc(var(--row-pad) + var(--bead) / 2);right:calc(var(--row-pad) + var(--bead) / 2);background:var(--bead-string);height:2px;margin-top:-1px;position:absolute}.row-active{--row-pad:8px;outline-color:var(--bead-active);outline-offset:0}.tile{width:var(--bead);height:var(--bead);border:2px solid var(--bead-empty-border);background:var(--bead-empty-bg);color:var(--bead-text);font-size:calc(var(--bead) * .42);text-transform:uppercase;-webkit-user-select:none;user-select:none;border-radius:50%;place-items:center;padding:0;font-weight:800;line-height:1;display:grid;position:relative}.tile-given,.tile-locked{background:var(--bead-given-bg);color:var(--bead-given-text);border-color:#0000}.tile-done{border-color:var(--bead-done-border)}button.tile{cursor:pointer}button.tile:hover:not(.tile-active):not(.link){border-color:var(--bead-done-border)}.link-1{--link:var(--link-1)}.link-2{--link:var(--link-2)}.link-3{--link:var(--link-3)}.link-4{--link:var(--link-4)}.tile.link{border:3px solid var(--link);background:var(--bead-empty-bg);color:var(--link)}.tile.link.tile-empty{border-style:dashed}.tile.tile-active{border-width:3px;border-color:var(--bead-active)}.board[data-status=solved] .tile-done:not(.link){border-color:var(--accent);background:var(--accent);color:var(--on-accent)}.mini-board{--bead:30px;--gap:4px;gap:4px;margin:16px 0}.mini-board .row{--row-pad:0px}.mini-board .tile{font-size:.85rem}.message{min-height:1.5em;color:var(--error);text-align:center;margin:12px 0 0;font-weight:600}.keyboard{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;flex-direction:column;gap:6px;padding:8px 0 6px;display:flex}.footer{color:var(--muted);text-align:center;padding:0 0 8px;font-size:.72rem}.footer a{color:inherit;text-underline-offset:2px}.footer a:hover{color:var(--text)}.keyboard.disabled{opacity:.45}.key-row{justify-content:center;gap:5px;display:flex}.key{border-radius:var(--radius);background:var(--key-bg);cursor:pointer;border:0;flex:1 1 0;max-width:44px;height:54px;padding:0;font-size:1rem;font-weight:700}.key[data-key=backspace]{isolation:isolate;position:relative;overflow:hidden}.key[data-key=backspace]:before{content:"";z-index:-1;background:var(--strong-border);transform-origin:0;position:absolute;inset:0;transform:scaleX(0)}.key[data-key=backspace].holding:before{transition:transform .5s linear;transform:scaleX(1)}.key[data-key=backspace]:active:not(:disabled){background:var(--key-bg)}.key:active:not(:disabled){background:var(--strong-border)}.key:disabled{cursor:default}.key-wide{flex-grow:1.6;max-width:68px;font-size:.8rem}.key svg{fill:none;stroke:currentColor;stroke-width:2px;stroke-linejoin:round;stroke-linecap:round;vertical-align:middle;width:22px;height:22px}.modal{background:var(--surface);width:min(92vw,420px);max-height:90dvh;color:var(--text);border:0;border-radius:14px;padding:24px;box-shadow:0 12px 40px #00000040}.modal::backdrop{background:var(--backdrop)}.modal h2{margin:0 0 12px;font-size:1.25rem}.modal p{line-height:1.45}.modal-close-form{float:right;margin:-12px -12px 0 0}.close{font-size:1.1rem}.help-list{margin:0 0 20px;padding-left:1.2em;line-height:1.45}.help-list li+li{margin-top:6px}.result-heading{text-align:center}.result-time{text-align:center;font-variant-numeric:tabular-nums;color:var(--accent-text);margin:0 0 12px;font-size:2.6rem;font-weight:800}.result-backtracks{color:var(--muted);text-align:center;margin:-8px 0 12px;font-size:.9rem}.result-label{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:12px 0 2px;font-size:.75rem;font-weight:700}.chain-line{overflow-wrap:anywhere;margin:0;font-weight:700}.chain-line.muted{color:var(--muted);font-weight:500}#share-button{margin-top:20px}.share-status{text-align:center;min-height:1.4em;color:var(--muted);margin:6px 0 0;font-size:.9rem}.stats-heading{margin-top:16px!important;font-size:1rem!important}.stats-grid{text-align:center;grid-template-columns:repeat(4,1fr);gap:8px;margin:0;display:grid}.stats-grid dd{font-variant-numeric:tabular-nums;margin:0;font-size:1.4rem;font-weight:800}.stats-grid dt{color:var(--muted);font-size:.75rem}.stats-grid div{flex-direction:column-reverse;display:flex}.countdown{text-align:center;color:var(--muted);font-variant-numeric:tabular-nums;margin:16px 0 0}.countdown 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var(--accent);outline-offset:1px}.modal-actions{gap:10px;display:flex}#help-dialog{scroll-padding-bottom:104px}.modal #help-rules .modal-actions,.modal #help-demo .modal-actions{z-index:2;border-top:1px solid var(--border);background:var(--surface);margin:0 -24px -24px;padding:10px 24px 24px;position:sticky;bottom:-24px}.modal-actions>*,.modal-actions form>button{flex:1 1 0;width:100%;min-width:0;padding-inline:12px}.modal-actions form{display:flex}.secondary-button{border:2px solid var(--accent);color:var(--accent-text);cursor:pointer;background:0 0;border-radius:999px;padding:10px 12px;font-size:1.05rem;font-weight:700}.secondary-button:hover{background:var(--accent-soft)}.demo-header{align-items:center;gap:4px;margin:-7px 0 12px -12px;display:flex}.demo-header h2{text-box:trim-both cap alphabetic;margin:0}#demo-title{outline:none}.demo-stage{position:relative}.demo-board{--bead:32px;--gap:5px;gap:5px}.demo-board .row{--row-pad:2px}.demo-caption{min-height:4.4em;color:var(--muted);text-align:center;margin:10px 0 4px;font-size:.92rem}.demo-keyboard{gap:5px;padding:0 0 16px}.demo-keyboard .key-row{gap:4px}.demo-keyboard .key{cursor:default;height:40px;font-size:.85rem}.demo-keyboard .key-wide{font-size:.68rem}.demo-keyboard .key svg{width:18px;height:18px}.key.key-pressed{background:var(--accent);color:var(--on-accent)}.demo-finger{--x:50%;--y:75%;--s:1;border:2px solid var(--accent);background:color-mix(in srgb, var(--accent) 30%, transparent);pointer-events:none;opacity:0;width:30px;height:30px;transform:translate(var(--x), var(--y)) scale(var(--s));border-radius:50%;margin:-15px 0 0 -15px;transition:transform .26s ease-in-out,opacity .2s;position:absolute;top:0;left:0;box-shadow:0 3px 10px #0000004d}.demo-finger.visible{opacity:1}.demo-finger.pressing{--s:.78;transition-duration:90ms}.pop{animation:.11s ease-out pop}.shake{animation:.36s ease-in-out shake}.hop{animation:.38s ease-out both hop}@keyframes pop{50%{transform:scale(1.12)}}@keyframes shake{20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}@keyframes hop{40%{transform:translateY(-10px)}}.touch-only{display:none}@media (hover:none) and (pointer:coarse){.touch-only{display:list-item}}@media (prefers-reduced-motion:reduce){.pop,.shake,.hop{animation:none}}@media (height<=620px){.key{height:46px}.board{gap:5px}}.nowrap{white-space:nowrap}