@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Manrope:wght@400;500;600;650;700;750;800&display=swap');
:root{color-scheme:dark;--bg:#111616;--panel:#171d1c;--line:#303936;--text:#f0f2e9;--muted:#8d9993;--accent:#c4e9ba;--font:'DM Sans',sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px var(--font);-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:5px}button{transition:background .16s,color .16s,opacity .16s}button:hover:not(:disabled){filter:brightness(1.16)}a{color:inherit}.topbar{height:100px;padding:0 4.5%;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;font:750 36px 'Manrope',sans-serif;letter-spacing:-1.8px}.brand svg{width:35px;height:35px;stroke:var(--accent);fill:none;stroke-width:1.3}.brand-dot{color:var(--accent)}.edition{font-size:12px;letter-spacing:2px;color:#b2bbb5;display:flex;gap:24px}.edition span{color:#697770;border-left:1px solid var(--line);padding-left:24px}.quiet-button{background:none;border:0;color:#b6c0b8;font-size:14px;display:flex;align-items:center;gap:10px}.help-icon{border:1px solid #78877d;border-radius:50%;width:19px;height:19px;font-size:12px;display:grid;place-items:center}main{max-width:1530px;margin:auto;display:grid;grid-template-columns:minmax(600px,1fr) 338px;padding:38px 4.5% 32px;gap:46px}.play-surface{min-width:0}.surface-heading{display:flex;justify-content:space-between;align-items:flex-start;position:relative;z-index:1;pointer-events:none}.eyebrow,.section-label{font-size:11px;font-weight:550;letter-spacing:1.9px}.eyebrow{color:var(--accent);margin-bottom:13px}h1{font:500 43px/1.13 'Manrope',sans-serif;letter-spacing:-1.9px;margin:0}.live-state{display:flex;align-items:center;gap:8px;font-size:12px;color:#b0bdb3;padding-top:4px}.live-state>span:first-child{width:5px;height:5px;border-radius:50%;background:var(--accent)}.board-wrap{position:relative;max-width:800px;width:100%;margin:-87px auto -18px;aspect-ratio:760/756}#board{width:100%;height:100%;overflow:visible;touch-action:none}.ring-track{stroke:#46504a;stroke-width:1.5;fill:none;transition:stroke .18s,stroke-width .18s}.ring-track.selected{stroke:var(--accent);stroke-width:2.4}.ring-hit{fill:none;stroke:transparent;stroke-width:16;cursor:grab}.ring-hit:active{cursor:grabbing}.sticker{stroke:#111616;stroke-width:3.5;pointer-events:none}.sticker-center{fill:none;stroke:#15201a;stroke-width:1.2;opacity:.48;pointer-events:none}.ring-control{position:absolute;display:flex;flex-direction:column;gap:5px;width:96px;transform:translate(-50%,-50%)}.control-row{display:grid;grid-template-columns:29px 38px 29px;align-items:center;background:#1b2320;border:1px solid #344139;border-radius:5px;height:25px;color:#8f9e93}.control-row.active{border-color:#bdd9b3;background:#28362b;color:var(--accent)}.control-row button{color:inherit;background:transparent;border:0;padding:0;height:23px;font-size:17px}.control-row .select-ring{font:600 11px var(--font);letter-spacing:1px;border-inline:1px solid #344139;height:14px}.control-label{position:absolute;white-space:nowrap;text-align:center;width:100%;top:-20px;color:#87978b;font-size:10px;letter-spacing:1.8px}.control-y{left:50%;top:8.5%}.control-x{left:8%;top:77%;transform:translate(-50%,-50%) rotate(-30deg)}.control-z{left:92%;top:77%;transform:translate(-50%,-50%) rotate(30deg)}.board-caption{display:flex;align-items:center;justify-content:center;gap:10px;font-size:12px;color:#87958c;position:relative}.mouse-icon{font-size:20px;color:#becbc0}.caption-separator{color:#46584a;margin:0 3px}kbd{font:11px var(--font);border:1px solid #38443c;border-radius:3px;padding:2px 5px;display:inline-block;color:#a5b2a8}.actions{border-top:1px solid var(--line);padding-top:25px;margin-top:25px;display:flex;align-items:center;gap:12px}.primary-button,.outline-button,.solve-button{border:0;border-radius:6px;min-height:46px;padding:0 21px;font-size:14px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px}.primary-button{background:var(--accent);color:#1d2c20}.primary-button>span,.outline-button>span{font-size:22px;line-height:1}.outline-button{border:1px solid #465048;background:transparent;color:var(--text)}.action-divider{height:22px;width:1px;background:var(--line);margin:0 4px}.text-button{border:0;background:none;color:#acb8ae;font-size:13px;padding:8px 0}.keyboard-tip{margin-left:auto;color:#6d7d72;font-size:11px;display:flex;align-items:center;gap:7px}.sidebar{border:1px solid var(--line);background:#151c19;border-radius:9px;overflow:hidden;align-self:start}.side-section{padding:23px 24px;border-bottom:1px solid var(--line)}.section-label{color:#a3b2a6;display:flex;align-items:center;justify-content:space-between;font-size:10px;letter-spacing:1.5px}.section-label>span{font-size:10px;letter-spacing:0;color:#8b9f90}.section-label .tiny-cube{font-size:20px;color:#a4bca6;line-height:10px}#cube-view{display:block;width:100%;height:191px;margin:1px 0 -4px}.cube-note{text-align:center;font-size:11px;color:#7e9184}.face-net{display:grid;grid-template-columns:repeat(4,34px);grid-template-rows:repeat(3,34px);gap:4px;justify-content:center;margin:18px auto 9px}.net-face{display:grid;grid-template-columns:repeat(3,1fr);gap:2px}.net-face span{border-radius:1px}.net-face[data-face=U]{grid-area:1/2}.net-face[data-face=L]{grid-area:2/1}.net-face[data-face=F]{grid-area:2/2}.net-face[data-face=R]{grid-area:2/3}.net-face[data-face=B]{grid-area:2/4}.net-face[data-face=D]{grid-area:3/2}.net-caption{text-align:center;font-size:9px;letter-spacing:1.8px;color:#768d7c}.stats{display:grid;grid-template-columns:1fr 1fr 1fr;margin:18px 0}.stats>div{display:flex;flex-direction:column;gap:4px}.stats strong{font:450 30px 'Manrope',sans-serif;letter-spacing:-1px}.stats strong span{font:400 12px var(--font);letter-spacing:0;color:#768e7d}.stats>div>span{font-size:11px;color:#7e9285}.progress-track{height:3px;background:#2f3b32;overflow:hidden;border-radius:3px}.progress-track>div{height:100%;background:var(--accent);transition:width .3s}.history-label{margin-top:23px}.mini-button{font-size:9px;background:none;color:#7d9384;border:1px solid #3a493e;border-radius:3px}.history{display:flex;gap:5px;align-items:center;min-height:29px;margin-top:9px;flex-wrap:wrap}.history>span:not(.empty-history){font-size:11px;color:#b1c2b5;background:#253229;min-width:25px;padding:5px;border-radius:3px;text-align:center}.empty-history{font-size:11px;color:#748a7b}.solver-section p{font:450 20px/1.5 'Manrope',sans-serif;letter-spacing:-.4px;margin:15px 0 18px}.solve-button{width:100%;background:#25372a;border:1px solid #42553e;color:var(--accent);justify-content:flex-start}.button-end{margin-left:auto}.solver-secondary{display:flex;justify-content:center;margin-top:9px}.solver-secondary button{font-size:11px;color:#9caf9d}.solver-secondary button span{padding-left:8px}.solver-status{font-size:12px;line-height:1.5;color:var(--accent)}.solver-status:not(:empty){margin-top:12px}.solution{display:flex;flex-wrap:wrap;gap:4px;margin-top:12px}.solution span{font-size:11px;padding:4px 5px;border:1px solid #465840;border-radius:3px}.solution .done{opacity:.3}.solution .next{background:var(--accent);color:#17291d}.small-note{padding:20px 24px;display:flex;gap:11px}.note-mark{color:#a5c2aa;font-size:21px;line-height:1}.small-note strong{font-size:11px;font-weight:500;color:#a4b7a8}.small-note p{font-size:11px;line-height:1.7;color:#718a7a;margin:7px 0 0}footer{border-top:1px solid var(--line);padding:23px 4.5%;display:flex;justify-content:space-between;color:#738178;font-size:10px;letter-spacing:1.3px}footer>span:last-child{letter-spacing:.2px}footer i{font-style:normal;margin:0 9px;color:#506258}dialog{color:var(--text);background:#1a241e;border:1px solid #4f6252;border-radius:14px;padding:36px;max-width:560px;width:calc(100% - 32px)}dialog::backdrop{background:#080e0bcc;backdrop-filter:blur(5px)}dialog h2{font:500 32px 'Manrope',sans-serif;margin:12px 0}dialog p,dialog li{font-size:15px;line-height:1.7;color:#a9bbad}dialog ol{padding-left:21px}dialog li{margin-bottom:13px}dialog li strong{color:var(--text)}.dialog-close{position:absolute;right:15px;top:10px;font-size:26px}.help-keys{font-size:12px;color:#9fb5a4;line-height:2.6}.help-keys span{display:block}.credits{font-size:11px!important;margin-bottom:0}[hidden]{display:none!important}@media(min-width:1450px){main{grid-template-columns:minmax(600px,1fr) 360px}.board-wrap{margin-top:-85px}.side-section{padding:25px 28px}}@media(max-width:1100px){main{grid-template-columns:minmax(460px,1fr) 285px;gap:25px;padding:30px 3%}h1{font-size:35px}.topbar{padding:0 3%}.board-wrap{margin-top:-36px;margin-bottom:8px}.side-section{padding:21px 19px}.keyboard-tip{display:none}.board-caption{font-size:10px;gap:6px}.control-row{height:24px}.ring-control{width:84px}.control-row{grid-template-columns:25px 34px 25px}.surface-heading{min-height:136px}.live-state{font-size:10px}.actions{flex-wrap:wrap}}@media(max-width:800px){.topbar{height:79px;padding:0 6%}.brand{font-size:31px}.edition{display:none}main{display:block;padding:26px 5%}.surface-heading{min-height:90px}h1{font-size:32px}.eyebrow{font-size:9px}.board-wrap{margin:-7px auto 6px;max-width:680px}.sidebar{display:grid;grid-template-columns:1fr 1fr;margin-top:28px}.side-section{border-right:1px solid var(--line)}.cube-section{grid-row:span 2}.small-note{grid-column:1/-1}.board-caption{font-size:11px;flex-wrap:wrap}.actions{justify-content:center}footer{font-size:8px;gap:16px;padding:20px 5%}.live-state{padding-top:0}.control-label{font-size:8px}.ring-control{width:78px;gap:3px}.control-row{grid-template-columns:23px 32px 23px;height:25px}.control-row .select-ring{font-size:9px}.control-y{top:7.5%}.control-x{left:7%;top:79%}.control-z{left:93%;top:79%}}@media(max-width:440px){.surface-heading .live-state{font-size:9px}.board-wrap{margin-top:8px}.board-caption{gap:5px;font-size:10px}.caption-separator{display:none}.actions{gap:9px}.primary-button,.outline-button{font-size:12px;padding:0 15px;min-height:43px}.sidebar{display:block}.cube-section{display:grid;grid-template-columns:1fr 1fr}.cube-section .section-label{grid-column:1/-1}#cube-view{height:160px}.cube-note{grid-column:1/-1;grid-row:3}.face-net{align-self:center;margin:0 auto}.net-caption{display:none}.small-note{padding:20px}.control-row{height:26px}.control-row button{height:24px}footer>span:first-child{display:none}footer{justify-content:center}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
/* Keep the three marker stacks clear of the ring paths. */
.board-wrap{aspect-ratio:760/836;margin-top:-106px;margin-bottom:0}
.control-y{top:7.8%}.control-x,.control-z{top:88%}
.ring-track{stroke:#536056}
.stats{grid-template-columns:.7fr 1.2fr 1fr;gap:12px}.stats strong{font-size:28px;font-variant-numeric:tabular-nums;white-space:nowrap}
.section-label{font-size:12px;letter-spacing:1.1px}.cube-note,.stats>div>span,.empty-history,.small-note strong,.small-note p,.solver-secondary button{font-size:12px}
.live-state,.board-caption,.text-button{font-size:14px}.control-label{font-size:12px}.control-row .select-ring{font-size:12px}
@media(min-width:1101px){.board-wrap{max-width:740px}.surface-heading{min-height:125px}}
@media(max-width:1100px){.board-wrap{margin-top:-85px}.section-label{font-size:11px;letter-spacing:.8px}.stats{gap:8px}.stats strong{font-size:24px}.board-caption{font-size:12px}.control-label{font-size:10px}}
@media(max-width:800px){.board-wrap{margin-top:-36px}.control-y{top:8%}.control-x,.control-z{top:89%}.control-x{left:9%}.control-z{left:91%}.stats{grid-template-columns:.7fr 1.2fr 1fr;gap:8px}.stats strong{font-size:23px}.control-label{font-size:10px}.control-row .select-ring{font-size:11px}}
@media(max-width:550px){.sidebar{display:block}.cube-section{display:grid;grid-template-columns:1fr 1fr}.cube-section .section-label{grid-column:1/-1}#cube-view{height:160px}.cube-note{grid-column:1/-1;grid-row:3}.face-net{align-self:center;margin:0 auto}.net-caption{display:none}.stats strong{font-size:30px}.live-state{font-size:12px}.board-caption{font-size:12px;gap:7px}.board-caption>span:last-child{display:none}.caption-separator{display:none}.surface-heading{min-height:114px}.board-wrap{margin-top:-33px}.ring-control{width:87px}.control-row{grid-template-columns:27px 33px 27px;height:28px}.control-row button{height:26px}.control-x{left:11%}.control-z{left:89%}.control-x,.control-z{top:91%}.control-y{top:7%}.small-note strong,.small-note p{font-size:13px}}
@media(max-width:550px){.control-x{left:14%}.control-z{left:86%}}
@media(max-width:550px){.board-wrap{margin-top:22px}}