[hidden]{display:none!important}:root{--bg: #0f1115;--panel: #171a21;--card: #1e222b;--line: #2c313c;--text: #e8eaed;--muted: #9aa0a6;--accent: #ffd60a;--ok: #34c759;--warn: #ff9f0a;--err: #ff453a;--info: #64d2ff;color-scheme:dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text)}button{font:inherit;color:var(--text);background:#2a2f3a;border:1px solid var(--line);border-radius:8px;padding:8px 14px;cursor:pointer}button:hover:not(:disabled){background:#343a47}button:disabled{opacity:.45;cursor:default}button.primary{background:var(--accent);color:#111;border-color:var(--accent);font-weight:650}button.primary:hover:not(:disabled){background:#ffe04d}button.big{padding:12px 20px;font-size:1.05rem}button.link{background:none;border:none;color:var(--info);padding:4px 6px}button.on{outline:2px solid var(--accent)}kbd{font-size:.75em;opacity:.7;border:1px solid currentColor;border-radius:4px;padding:0 4px;margin-left:4px}.app{max-width:1400px;margin:0 auto;padding:12px 16px 40px}header{display:flex;align-items:center;justify-content:space-between;padding:4px 0 12px}header h1{margin:0;font-size:1.4rem;letter-spacing:.2px}.logo{color:var(--accent)}.header-actions{display:flex;gap:8px;align-items:center}.pill{font-size:.75rem;border:1px solid var(--warn);color:var(--warn);border-radius:99px;padding:2px 8px}main{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(320px,1fr);gap:16px;align-items:start}@media (max-width: 900px){main{grid-template-columns:1fr}}.stage{position:relative}.video-host{position:relative;width:100%;border-radius:12px;overflow:hidden;background:#000;line-height:0}.video-host .source{width:100%;height:auto;display:block;transform:scaleX(-1)}.video-host .overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.video-placeholder{aspect-ratio:16 / 9;border:1px dashed var(--line);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;gap:6px}.toast{position:absolute;left:50%;bottom:16px;transform:translate(-50%);padding:10px 16px;border-radius:10px;background:#000c;font-weight:600;max-width:90%;text-align:center;animation:pop .25s ease-out;border:2px solid var(--line)}.toast.ok{border-color:var(--ok);color:#b8f5c8}.toast.warn{border-color:var(--warn);color:#ffd9a0}.toast.error{border-color:var(--err);color:#ffb4ae}.toast.info{border-color:var(--info)}@keyframes pop{0%{transform:translate(-50%) scale(.9);opacity:0}to{transform:translate(-50%) scale(1);opacity:1}}.panel{display:flex;flex-direction:column;gap:12px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}.card h2{margin:0 0 8px;font-size:1.15rem}.muted{color:var(--muted)}.small{font-size:.85rem}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.error,.errors{color:#ffb4ae}.errors{padding-left:18px;margin:8px 0}.ok{color:#9ff0b5}.note{color:var(--info);font-size:.9rem}.row{display:flex;gap:8px;align-items:center;margin-top:12px;flex-wrap:wrap}.row.wrap{flex-wrap:wrap}.steps-list{padding-left:20px;line-height:1.7}.scan-head{display:flex;justify-content:space-between;align-items:baseline}.hold{width:150px;height:160px;display:block;margin:0 auto}.hold-t{fill:var(--muted);font-size:11px}.hold-t.dark{fill:#333;font-weight:600}.instructions{font-size:1.02rem;line-height:1.45}.progress{height:8px;border-radius:99px;background:#2a2f3a;overflow:hidden;margin:10px 0}.progress div{height:100%;background:var(--ok);transition:width .1s}.thumbs{display:flex;gap:8px;margin:10px 0;flex-wrap:wrap}.thumb{padding:4px;display:flex;flex-direction:column;align-items:center;gap:2px;background:none}.thumb.current{border-color:var(--accent)}.mini{display:grid;grid-template-columns:repeat(3,12px);gap:1px;background:#111;padding:1px}.mini span{width:12px;height:12px;background:#333}.net{display:grid;grid-template-columns:repeat(4,auto);gap:4px;justify-content:center;margin:10px 0}.net-face{display:grid;grid-template-columns:repeat(3,26px);gap:2px;background:#000;padding:2px;border-radius:4px}.sticker{width:26px;height:26px;padding:0;border-radius:3px;border:none;font-size:11px;font-weight:700;color:#0000008c}.sticker:disabled{opacity:1}.sticker.center{box-shadow:inset 0 0 0 2px #00000059}.net-small .net-face{grid-template-columns:repeat(3,14px)}.net-small .sticker{width:14px;height:14px}.coach .stages{display:flex;gap:6px;margin-bottom:10px}.stages span{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#2a2f3a;color:var(--muted);font-size:.85rem;font-weight:700}.stages span.done{background:var(--ok);color:#0b2;color:#102a14}.stages span.current{background:var(--accent);color:#111}.goal{color:var(--muted);margin:0 0 6px}.big-move{font-size:5.5rem;font-weight:800;text-align:center;line-height:1.1;letter-spacing:1px;color:var(--accent);padding:6px 0;animation:pop2 .3s ease-out;font-family:ui-rounded,system-ui,sans-serif}.big-move.invisible-move{color:var(--info)}@keyframes pop2{0%{transform:scale(.85);opacity:.3}to{transform:scale(1);opacity:1}}.explain{line-height:1.4}.alg{display:flex;flex-wrap:wrap;gap:10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1.1rem}.seg{display:inline-flex;gap:6px;align-items:baseline;padding:4px 8px;background:#252a34;border-radius:8px}.seg-note{color:var(--muted);font-size:.7rem;font-family:system-ui}.mv.past{color:#6b7280;text-decoration:line-through}.mv.now{color:#111;background:var(--accent);border-radius:4px;padding:0 4px;font-weight:700}.toggle{display:inline-flex;gap:6px;align-items:center;font-size:.9rem;color:var(--muted)}.optimal{margin-top:14px}.optimal summary{cursor:pointer;color:var(--info)}.twisty-card{padding:8px}.twisty{width:100%;height:280px}.debug{margin-top:20px;background:#12151b;border:1px solid var(--warn);border-radius:12px;padding:12px 16px}.debug h3{margin:0 0 8px;color:var(--warn)}.debug h4{margin:4px 0}.debug-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}table.lab{border-collapse:collapse;font-size:.75rem;font-family:ui-monospace,monospace}table.lab td{padding:3px 6px;border-bottom:1px solid var(--line)}.cls{display:grid;grid-template-columns:repeat(3,44px);gap:3px}.cls span{background:#252a34;text-align:center;padding:4px;border-radius:4px;font-weight:700}.cls span small{display:block;font-weight:400;color:var(--muted);font-size:.65rem}.cls span.unsure{outline:2px solid var(--err)}.file input{display:block;margin:4px 0 8px}.sim{margin-top:12px;border-top:1px solid var(--line);padding-top:8px}.mv-btn{padding:4px 8px;min-width:40px;font-family:ui-monospace,monospace}.problem{border:1px solid var(--warn);background:#ff9f0a14;border-radius:10px;padding:10px 12px;margin:10px 0}.problem p{margin:0 0 4px;line-height:1.4}.problem .row{margin-top:6px}.cube-view{cursor:grab;touch-action:none;user-select:none;height:260px;perspective:900px;display:grid;place-items:center;margin:4px 0 8px}.cube-3{--h: 75px;width:150px;height:150px;position:relative;transform-style:preserve-3d;transition:transform .9s cubic-bezier(.3,.7,.3,1)}.c3-face{position:absolute;inset:0;display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:6px;background:#111;border-radius:3px;backface-visibility:hidden}.c3-st{border:none;padding:0;border-radius:2px;background:#3b3f47;display:grid;place-items:center}.c3-st:disabled{cursor:default;opacity:1}.c3-st:not(:disabled){cursor:pointer}.c3-st:not(:disabled):hover{filter:brightness(.85)}.c3-st span{font-size:20px;font-weight:800;color:#111;text-shadow:0 0 3px #fff}.c3-st.unsure{outline:3px dashed #111;outline-offset:-5px}.c3-label{position:absolute;inset:0;display:grid;place-items:center;color:#fff9;font-size:14px;font-weight:600;pointer-events:none}.instructions{font-size:1.02rem;line-height:1.45;margin:4px 0}.readback{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:10px 0;background:#1a1e26}.readback p{margin:0 0 8px}.cube-view.dragging{cursor:grabbing}.cube-view.dragging .cube-3{transition:none}.auto-faces{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin:12px 0}.auto-face{padding:6px 2px;display:flex;flex-direction:column;align-items:center;gap:4px;background:#232833}.auto-face.got{border-color:var(--ok)}.auto-mini{display:grid;grid-template-columns:repeat(3,12px);gap:2px;background:#111;padding:2px;border-radius:3px}.auto-mini i{width:12px;height:12px;background:#3b3f47;border-radius:1px}.landing{--ink: #0b0d12;--ink-2: #12151d;--edge: rgba(255, 255, 255, .09);--text-1: #f2f4f8;--text-2: #a6adbb;--gold: #ffd60a;color:var(--text-1);background:radial-gradient(900px 600px at 78% -8%,rgba(255,214,10,.16),transparent 60%),radial-gradient(700px 520px at 8% 12%,rgba(45,110,245,.16),transparent 60%),var(--ink);min-height:100vh;margin:-12px -16px -40px;padding:0 0 1px;font-size:17px;line-height:1.6}.landing section,.lp-nav,.lp-foot{max-width:1120px;margin-inline:auto;padding-inline:24px}.landing h1,.landing h2,.landing h3{line-height:1.12;letter-spacing:-.02em;margin:0}.landing p{margin:0}.lp-nav{display:flex;align-items:center;gap:24px;padding-block:20px}.lp-logo{font-weight:750;font-size:1.12rem;text-decoration:none;color:var(--text-1);letter-spacing:-.01em}.lp-logo span{color:var(--gold)}.lp-nav nav{display:flex;gap:22px;margin-left:auto}.lp-nav nav a{color:var(--text-2);text-decoration:none;font-size:.95rem}.lp-nav nav a:hover{color:var(--text-1)}.lp-cta{background:var(--gold);color:#10131a;border:none;border-radius:10px;padding:14px 26px;font-weight:700;font-size:1.02rem;cursor:pointer;transition:transform .15s,box-shadow .15s;box-shadow:0 8px 26px #ffd60a38}.lp-cta:hover{transform:translateY(-1px);box-shadow:0 12px 32px #ffd60a4d}.lp-cta.small{padding:9px 16px;font-size:.92rem;box-shadow:none}.lp-cta.wide{width:100%;margin-top:6px}.lp-ghost{color:var(--text-1);text-decoration:none;padding:14px 20px;border-radius:10px;border:1px solid var(--edge)}.lp-ghost:hover{border-color:#ffffff47}.lp-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding-block:64px 72px}.lp-eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.75rem;color:var(--gold);font-weight:700}.lp-hero h1{font-size:clamp(2.4rem,4.6vw,3.9rem);margin:14px 0 18px;font-weight:780}.lp-hero h1 em{font-style:normal;color:var(--text-2);display:block}.lp-sub{color:var(--text-2);font-size:1.1rem;max-width:56ch}.lp-actions{display:flex;gap:14px;align-items:center;margin:28px 0 22px;flex-wrap:wrap}.lp-points{list-style:none;padding:0;margin:0;display:flex;gap:14px 26px;flex-wrap:wrap;color:var(--text-2);font-size:.95rem}.lp-points li{display:flex;gap:6px}.lp-points b{color:var(--text-1);font-weight:650}.lp-hero-art{position:relative;display:grid;justify-items:end;align-content:start;min-height:470px;padding-top:8px}.hero-cube{width:180px;height:180px;perspective:900px;position:absolute;top:0;right:2%;filter:drop-shadow(0 24px 40px rgba(0,0,0,.55))}.hero-cube-inner{width:100%;height:100%;position:relative;transform-style:preserve-3d;animation:spin 26s linear infinite}@keyframes spin{0%{transform:rotateX(-24deg) rotateY(0)}to{transform:rotateX(-24deg) rotateY(360deg)}}.hc-face{position:absolute;inset:0;display:grid;grid-template-columns:repeat(3,1fr);gap:5px;padding:5px;background:#0a0a0c;border-radius:6px}.hc-face span{border-radius:3px}.hc-front{transform:translateZ(90px)}.hc-back{transform:rotateY(180deg) translateZ(90px)}.hc-right{transform:rotateY(90deg) translateZ(90px)}.hc-left{transform:rotateY(-90deg) translateZ(90px)}.hc-top{transform:rotateX(90deg) translateZ(90px)}.hc-bottom{transform:rotateX(-90deg) translateZ(90px)}@media (prefers-reduced-motion: reduce){.hero-cube-inner{animation:none;transform:rotateX(-24deg) rotateY(-30deg)}}.mock{margin:210px 0 0;width:min(380px,100%);background:linear-gradient(180deg,#171b24,#12151c);border:1px solid var(--edge);border-radius:16px;box-shadow:0 30px 70px #00000080;overflow:hidden}.mock-bar{display:flex;gap:7px;padding:12px 14px;border-bottom:1px solid var(--edge)}.mock-bar i{width:10px;height:10px;border-radius:50%;background:#2e3442}.mock-body{padding:18px 20px 22px}.mock-stages{display:flex;gap:6px}.mock-stages span{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:.72rem;font-weight:700;background:#232936;color:var(--text-2)}.mock-stages .done{background:#1f6f43;color:#d6ffe6}.mock-stages .now{background:var(--gold);color:#10131a}.mock-stage{color:var(--text-2);font-size:.85rem;margin-top:12px!important}.mock-move{font-size:4.6rem;font-weight:800;color:var(--gold);text-align:center;line-height:1.1}.mock-explain{color:var(--text-2);font-size:.92rem}.mock-alg{display:flex;gap:8px;margin-top:14px;font-family:ui-monospace,Menlo,monospace}.mock-alg span{color:var(--text-2)}.mock-alg .past{text-decoration:line-through;opacity:.5}.mock-alg .now{color:#10131a;background:var(--gold);border-radius:4px;padding:0 5px;font-weight:700}.mock-check{margin-top:16px;color:#7ee2a8;font-size:.88rem}.lp-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;border-block:1px solid var(--edge);padding-block:26px;margin-block:10px 70px}.lp-strip div{display:flex;flex-direction:column;gap:2px}.lp-strip b{font-size:1.5rem;letter-spacing:-.02em}.lp-strip span{color:var(--text-2);font-size:.9rem}.lp-section{padding-block:60px}.lp-section h2{font-size:clamp(1.8rem,3vw,2.5rem);font-weight:760}.lp-lead{color:var(--text-2);margin-top:12px!important;font-size:1.05rem;max-width:60ch}.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}.reveal.in{opacity:1;transform:none}.lp-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}.lp-step{background:linear-gradient(180deg,#ffffff0a,#ffffff04);border:1px solid var(--edge);border-radius:16px;padding:26px 24px;height:100%}.lp-step-n{color:var(--gold);font-weight:800;letter-spacing:.06em;font-size:.85rem}.lp-step h3{margin:10px 0 8px;font-size:1.22rem}.lp-step p,.lp-card p{color:var(--text-2);font-size:.98rem}.lp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.lp-card{border:1px solid var(--edge);border-radius:16px;padding:24px 20px;height:100%;background:#ffffff05}.lp-icon{font-size:1.5rem;color:var(--gold)}.lp-card h3{margin:12px 0 8px;font-size:1.08rem}.lp-timeline{list-style:none;padding:0;margin:36px 0 0;display:grid;gap:2px}.lp-timeline li{display:grid;grid-template-columns:210px 1fr;gap:24px;padding:20px 0;border-top:1px solid var(--edge)}.lp-timeline li:last-child{border-bottom:1px solid var(--edge)}.lp-timeline b{color:var(--gold);font-weight:650}.lp-timeline span{color:var(--text-2)}.lp-price-wrap{display:grid;place-items:center}.lp-price{width:min(520px,100%);border:1px solid rgba(255,214,10,.35);border-radius:22px;padding:36px 34px;background:linear-gradient(180deg,#ffd60a12,#ffffff05);text-align:center}.lp-amount{display:flex;align-items:baseline;justify-content:center;gap:10px;margin:14px 0 22px}.lp-amount span{font-size:3.6rem;font-weight:800;letter-spacing:-.03em}.lp-amount small{color:var(--text-2)}.lp-price ul{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:10px;text-align:left}.lp-price li{color:var(--text-2);padding-left:28px;position:relative}.lp-price li:before{content:"✓";position:absolute;left:0;color:#7ee2a8;font-weight:700}.lp-fineprint{color:var(--text-2);font-size:.85rem;margin-top:14px!important}.lp-faq{margin-top:28px;border-top:1px solid var(--edge)}.lp-faq details{border-bottom:1px solid var(--edge);padding:18px 0}.lp-faq summary{cursor:pointer;font-weight:600;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:16px}.lp-faq summary::-webkit-details-marker{display:none}.lp-faq summary:after{content:"+";color:var(--gold);font-weight:700}.lp-faq details[open] summary:after{content:"−"}.lp-faq p{color:var(--text-2);margin-top:10px!important;max-width:70ch}.lp-final{text-align:center;padding-block:90px 80px}.lp-final h2{font-size:clamp(1.9rem,3.4vw,2.7rem);margin-bottom:26px}.lp-foot{display:flex;justify-content:space-between;gap:20px;align-items:center;flex-wrap:wrap;border-top:1px solid var(--edge);padding-block:26px 40px;color:var(--text-2)}@media (max-width: 900px){.lp-hero{grid-template-columns:1fr;gap:30px;padding-block:34px 40px}.lp-hero-art{min-height:340px}.hero-cube{position:relative;right:auto;width:170px;height:170px;margin-bottom:8px}.hero-cube-inner{animation-duration:30s}.hc-face{--z: 85px}.mock{margin-top:24px}.lp-nav nav{display:none}.lp-strip,.lp-steps,.lp-grid{grid-template-columns:repeat(2,1fr)}.lp-timeline li{grid-template-columns:1fr;gap:6px}.landing{font-size:16px}}@media (max-width: 560px){.lp-strip,.lp-grid{grid-template-columns:1fr 1fr}.lp-steps{grid-template-columns:1fr}}header h1 .home{background:none;border:none;padding:0;font:inherit;color:inherit;cursor:pointer}.lp-steps .reveal,.lp-grid .reveal{height:100%}.lp-hero>*,.lp-steps>*,.lp-grid>*,.lp-strip>*,.lp-timeline li>*{min-width:0}.landing{overflow-x:hidden}.landing h1,.landing h2,.landing h3,.landing p{overflow-wrap:break-word}@media (max-width: 900px){.lp-hero-art{justify-items:center;min-height:0}.hero-cube{position:relative;right:auto;top:auto;width:150px;height:150px;margin:8px auto 26px}.hero-cube-inner{transform-origin:50% 50%}.mock{margin-top:0;width:100%}}.paywall{text-align:left}.paywall h2{margin-bottom:6px}.paywall-price{display:flex;align-items:baseline;gap:10px;margin:14px 0 10px}.paywall-price b{font-size:2.4rem;letter-spacing:-.02em}.paywall-price span{color:var(--muted)}.paywall-list{list-style:none;padding:0;margin:0 0 6px;display:grid;gap:6px}.paywall-list li{color:var(--muted);padding-left:24px;position:relative}.paywall-list li:before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}.code-input{font:inherit;background:#11141a;color:var(--text);border:1px solid var(--line);border-radius:8px;padding:9px 12px;width:190px;font-family:ui-monospace,Menlo,monospace}.paywall-field{display:block;margin:12px 0 4px}.paywall-field span{display:block;font-size:.85rem;color:var(--muted);margin-bottom:4px}.code-input.wide{width:100%;font-family:inherit}.consent{display:flex;gap:10px;align-items:flex-start;margin:10px 0 8px;font-size:.9rem;line-height:1.4}.consent input{margin-top:3px;flex:none}.consent em{color:var(--muted);font-style:normal}.lp-legal{display:flex;gap:16px}.lp-legal a{color:var(--text-2, #a6adbb);text-decoration:none}.lp-legal a:hover{color:#fff}.code-input.key{width:320px;max-width:100%;font-size:.85rem}.buy-line{margin-top:10px}.lp-tryline{color:var(--text-2, #a6adbb);font-size:.92rem;margin-top:-8px!important}.lp-ghost.wide{display:block;width:100%;text-align:center;margin-top:10px;background:none}button.lp-ghost{font:inherit;cursor:pointer;background:none}.scan-nav{display:inline-flex;gap:4px;align-items:baseline}.grid-zoom{position:absolute;left:12px;bottom:12px;display:flex;gap:8px;align-items:center;background:#000000a6;border:1px solid var(--line);border-radius:10px;padding:6px 10px;font-size:.85rem;color:var(--muted);backdrop-filter:blur(4px)}.grid-zoom b{color:var(--text);min-width:38px;text-align:center;font-variant-numeric:tabular-nums}.grid-zoom button{padding:2px 10px;font-size:1rem;line-height:1.2}.grid-zoom button.link{font-size:.8rem;padding:2px 4px}.move-words{color:var(--text);font-size:1rem;text-align:center;margin:-4px 0 12px}.plan{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:10px 0}.plan-head{display:flex;justify-content:space-between;align-items:baseline;color:var(--muted);font-size:.82rem;margin-bottom:8px}.plan-moves{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.plan-moves li{padding:3px 8px;border-radius:6px;background:#252a34;font-size:.95rem}.plan-moves li.done{color:#6b7280;text-decoration:line-through;background:#1d212a}.plan-moves li.now{background:var(--accent);color:#111;font-weight:700}.tip{background:#64d2ff14;border-left:3px solid var(--info);padding:8px 12px;border-radius:0 8px 8px 0;font-size:.92rem;line-height:1.45;margin:10px 0}.tip b{color:var(--info);margin-right:6px}.sheet-backdrop{position:fixed;inset:0;background:#000000a6;backdrop-filter:blur(3px);display:grid;place-items:center;padding:20px;z-index:50}.sheet{background:var(--card);border:1px solid var(--line);border-radius:16px;width:min(940px,100%);max-height:90vh;overflow:auto;box-shadow:0 30px 80px #0009}.sheet-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px 0}.sheet-head h2{margin:0;font-size:1.15rem}.sheet-body{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;padding:16px 22px 0}.sheet-p{line-height:1.55;margin:10px 0}.ba{background:#191d25;border-radius:12px;padding:14px 16px;margin-bottom:12px}.ba span{color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}.ba p{margin:4px 0 0;line-height:1.45}.ba-arrow{color:var(--accent);font-size:1.3rem;margin:8px 0}.sheet-cube{display:flex;flex-direction:column}.sheet-player{height:300px;background:#14171e;border-radius:12px}.sheet-tips summary{cursor:pointer;color:var(--info);margin-top:10px}.sheet-foot{border-top:1px solid var(--line);margin-top:18px;padding:14px 22px 20px}.sheet-foot b{color:var(--info)}.sheet-foot ul{margin:8px 0 0;padding-left:20px;color:var(--muted);line-height:1.6}@media (max-width: 820px){.sheet-body{grid-template-columns:1fr}.sheet-player{height:240px}}.sheet-loading{display:grid;place-items:center;height:100%;margin:0}.pattern-now{background:#ffd60a14;border-left:3px solid var(--accent);padding:8px 12px;border-radius:0 8px 8px 0;font-size:.92rem;line-height:1.45;margin:0 0 10px}.pattern-now b{color:var(--accent)}.chunk{border-top:1px solid var(--line);padding-top:8px;margin-top:8px}.chunk:first-of-type{border-top:none;padding-top:0;margin-top:0}.chunk-label{display:flex;flex-direction:column;margin-bottom:6px}.chunk-label b{font-size:.9rem}.chunk-label small{color:var(--muted);font-size:.78rem}.chunk:not(.current) .plan-moves li{opacity:.55}.done-row{margin-bottom:8px}.pill.local{border-color:var(--ok);color:var(--ok)}.tutorial .lp-hero.tut-hero{grid-template-columns:1fr;padding-block:40px 20px}.nav-link,.lp-logo.as-button{background:none;border:none;color:var(--text-2, #a6adbb);font:inherit;cursor:pointer;padding:0}.nav-link:hover{color:#fff}.nav-link.inline{color:var(--info);text-decoration:underline}.lp-logo.as-button{color:#f2f4f8;font-weight:750;font-size:1.12rem}.link-a{color:var(--info);text-decoration:none;font-size:.9rem}.tut-stage{border:1px solid var(--edge, rgba(255,255,255,.09));border-radius:16px;padding:22px;margin:18px 0}.tut-stage-head{display:flex;gap:14px;align-items:flex-start}.tut-num{width:34px;height:34px;flex:none;border-radius:50%;background:var(--gold, #ffd60a);color:#10131a;display:grid;place-items:center;font-weight:800}.tut-stage-head h3{font-size:1.25rem;margin:2px 0 4px}.tut-pics{display:flex;gap:18px;flex-wrap:wrap;margin:18px 0}.facefig{margin:0;text-align:center}.facefig figcaption{color:var(--text-2, #a6adbb);font-size:.78rem;margin-top:6px;max-width:130px}.tut-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}.tut-cols h4,.pat-text h4{margin:0 0 6px;font-size:1rem}.tut-cols p{margin:0 0 10px;line-height:1.55}.tut-cases{list-style:none;padding:0;margin:0;display:grid;gap:10px}.tut-cases li{border-left:2px solid var(--edge, rgba(255,255,255,.12));padding-left:12px}.tut-cases b{display:block;font-weight:600}.tut-cases span{color:var(--text-2, #a6adbb)}.tut-caveats{background:#ff9f0a14;border-left:3px solid #ff9f0a;border-radius:0 10px 10px 0;padding:12px 16px;margin-top:18px}.tut-caveats b{color:#ff9f0a}.tut-caveats ul{margin:8px 0 0;padding-left:18px;color:var(--text-2, #a6adbb);line-height:1.6}.pat-card{display:grid;grid-template-columns:1fr 260px;gap:20px;align-items:start;background:#ffffff08;border-radius:12px;padding:16px;margin-top:18px}.pat-moves{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0;font-family:ui-monospace,Menlo,monospace}.pat-moves span{background:#252a34;border-radius:6px;padding:4px 9px}.pat-words{list-style:none;padding:0;margin:8px 0;color:var(--text-2, #a6adbb);font-size:.85rem;display:grid;gap:3px}.pat-words b{font-family:ui-monospace,Menlo,monospace;color:#f2f4f8;margin-right:6px}.pat-words.two-col{grid-template-columns:1fr 1fr;gap:4px 20px}.pat-cube{height:230px;display:flex;flex-direction:column;background:#14171e;border-radius:10px;padding:6px}.pat-cube>:first-child{flex:1}@media (max-width: 820px){.tut-cols,.pat-card{grid-template-columns:1fr}.pat-cube{height:200px}}.tut-aside{background:#64d2ff0f;border-left:3px solid var(--info, #64d2ff);border-radius:0 10px 10px 0;padding:14px 18px;margin-top:18px}.tut-aside h4{margin:0 0 8px;color:var(--info, #64d2ff)}.tut-aside p{line-height:1.55;margin:0 0 10px}.tut-aside .tut-pics{margin:6px 0 12px}.pat-moves .reps{background:none;color:var(--text-2, #a6adbb);font-size:.8rem;align-self:center}.pat-cube-foot{display:flex;justify-content:space-between;align-items:center;padding:0 6px 2px}.pat-cube-foot small{color:var(--text-2, #a6adbb);font-size:.75rem}.tut-top{display:grid;grid-template-columns:1fr 280px;gap:20px;align-items:start;margin:18px 0}.tut-top .tut-pics{margin:0}.tut-cube{height:250px;display:flex;flex-direction:column;background:#14171e;border-radius:12px;padding:6px}.tut-cube>:first-child{flex:1}@media (max-width: 820px){.tut-top{grid-template-columns:1fr}}.tut-moves{margin:4px 0 14px}.tut-moves summary{cursor:pointer;color:var(--info, #64d2ff)}.tut-moves ol{list-style:decimal;margin:12px 0 0;padding-left:22px;display:grid;gap:10px}.tut-moves li b{display:block;font-size:.9rem;margin-bottom:4px}.tut-moves .plan-moves span{background:#252a34;border-radius:6px;padding:3px 8px;font-family:ui-monospace,Menlo,monospace;font-size:.9rem}.tut-moves .plan-moves{display:flex;flex-wrap:wrap;gap:5px}.tut-cases li.with-pic{display:flex;gap:12px;align-items:flex-start;border-left:none;padding-left:0}.tut-cases li.with-pic .facefig{flex:none}.tut-cases b em{color:var(--gold, #ffd60a);font-style:normal;font-weight:600;font-size:.85em}.twisty-wrap{display:flex;flex-direction:column;height:100%}.twisty-wrap .twisty{flex:1;min-height:0}.twisty-controls{display:flex;gap:8px;align-items:center;padding:6px 4px 2px}.twisty-controls button{padding:4px 12px;font-size:.85rem;font-variant-numeric:tabular-nums}.twisty-controls small{color:var(--muted, #9aa0a6);font-size:.75rem;margin-left:auto}.case-cube{width:200px;flex:none;background:#14171e;border-radius:10px;padding:6px;overflow:hidden}.case-cube .twisty-wrap{height:210px}.case-cube .twisty-controls{gap:4px;padding:4px 0 0;justify-content:center}.case-cube .twisty-controls button{padding:2px 6px;font-size:.72rem;line-height:1.3;background:#1c202a}.case-cube .twisty-controls button.primary{padding:2px 10px}.case-cube .twisty-controls small{display:none}.tut-cases li.with-pic{gap:16px;align-items:center}@media (max-width: 820px){.tut-cases li.with-pic{flex-direction:column}.case-cube{width:100%}}.piece-chip{display:flex;align-items:center;justify-content:center;gap:6px;margin:6px 0 2px;font-size:12px;color:var(--muted)}.piece-chip span{display:inline-flex;gap:2px}.piece-chip i{width:10px;height:10px;border-radius:2px;display:block;box-shadow:0 0 0 1px #0006 inset}.twisty{position:relative}.twisty-mark{position:absolute;inset:0;pointer-events:none}
