:root{color-scheme:dark;--bg:#14151a;--surface:#1b1d24;--surface-2:#23262f;--line:#353945;--text:#edeef3;--muted:#a1a5b4;--accent:#b8a9ff;--green:#8cd3ad;--error:#ffaaa6;font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}.wrap{width:min(1180px,calc(100% - 64px));margin:auto}button,input,select,textarea{font:inherit}button,a,select,input{ -webkit-tap-highlight-color:transparent}button{color:var(--text);background:transparent;border:1px solid #484d5b;border-radius:8px;padding:8px 13px;cursor:pointer;transition:background .16s,transform .16s,border-color .16s}button:hover{background:#2c2f3a;border-color:#72768a}button:active{transform:translateY(1px)}button:disabled{opacity:.38;cursor:default;transform:none}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,p{margin:0}h1{font-size:30px;letter-spacing:-1px;line-height:1.4;margin:4px 0 9px}h2{font-size:14px}small{display:block}.muted,.fine{color:var(--muted)}.fine{font-size:12px;line-height:1.7}.site-header{height:84px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:0;font-size:19px;font-weight:720;color:var(--accent);letter-spacing:-.4px}.brand img{margin-right:10px}.brand span{color:#e6dfff}.brand:hover{text-decoration:none}.view-switch{display:flex;padding:4px;border:1px solid #4d5260;border-radius:10px;gap:3px}.view-switch button{border:0;font-size:12px;padding:6px 11px}.view-switch [aria-pressed=true]{background:#333244;color:#d5caff}.intro{display:flex;justify-content:space-between;align-items:flex-end;padding:31px 0 22px}.eyebrow{font-size:10px;letter-spacing:2.5px;color:#8f839f;font-weight:650}.intro .muted{font-size:13px}.daily{width:220px;text-align:right;color:var(--muted);font-size:12px;padding-bottom:4px}.daily-track{display:flex;gap:5px;margin-top:10px}.daily-track i{height:4px;flex:1;border-radius:4px;background:#343743;transition:background .2s}.daily-track i.done{background:var(--accent)}.offline-strip{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:11px;padding:0 0 20px;min-height:40px}#offline-status:before{content:'●';color:var(--accent);font-size:9px;margin-right:8px}.offline-strip button{font-size:11px}.eo-link{margin-left:auto}.text-button{border:0;color:var(--accent);padding:4px 2px;background:none;font-size:12px;white-space:nowrap}.text-button:hover{background:transparent;text-decoration:underline}.workspace{display:grid;grid-template-columns:330px minmax(0,1fr);gap:22px;align-items:start}.panel{border:1px solid #3e424e;border-radius:18px;background:linear-gradient(140deg,#1d2027e8,#191c24e8);box-shadow:0 1px 0 #ffffff0b inset}.settings{padding:23px}.step-heading{font-size:11px;letter-spacing:.5px;font-weight:500;color:var(--muted)}.step-heading span{color:var(--accent);margin-right:9px;font-family:ui-monospace,SFMono-Regular,monospace;font-size:12px}.mode-switch{display:flex;background:#14161d;padding:5px;gap:5px;border-radius:11px;margin:18px 0 13px}.mode-switch button{flex:1;border:0;padding:10px 4px;color:var(--muted);font-weight:700;font-size:18px;border-radius:7px}.mode-switch [aria-pressed=true]{color:var(--accent);background:#2b2d38;box-shadow:0 3px 8px #0003}.mode-switch small{font-size:10px;font-weight:400;margin-top:3px;color:inherit;opacity:.9}.mode-description{font-size:12px;color:var(--muted);min-height:40px}.field{margin-top:19px}.field label{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:600;margin-bottom:8px}.field-hint{font-size:11px;font-weight:400;color:var(--muted)}select{border:1px solid #4b5060;color:var(--text);background:#1a1d25;border-radius:7px;min-height:34px;padding:5px 9px}.field select{width:100%}.pool-options{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px;margin-top:13px}.pool-options label{display:flex;align-items:center;gap:5px;cursor:pointer}.pool-options input{accent-color:var(--accent);margin:0}.extra-settings{margin-top:16px}.extra-settings summary{font-size:12px;color:var(--accent)}.extra-settings .field{margin-top:12px}.extra-settings .fine{margin-top:7px}summary{cursor:pointer;list-style-position:inside}.scramble-field{margin-top:23px}textarea{width:100%;display:block;resize:vertical;min-height:118px;max-height:340px;line-height:1.85;letter-spacing:1px;padding:12px;color:#f0f0f8;background:#14171e;border:1px solid #575c6d;border-radius:9px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}.scramble-field .fine{margin-top:7px;font-size:11px}.question-nav{display:flex;gap:8px;margin-top:15px}.question-nav button{flex:1;font-size:12px}.primary{display:block;width:100%;padding:12px;background:var(--accent);color:#252039;font-weight:700;border-color:var(--accent);margin-top:10px;box-shadow:0 4px 14px #a48aff16}.primary:hover{background:#c7bbff;border-color:#c7bbff}.library-status{font-size:10px;margin-top:12px;min-height:16px}.stage{padding:23px 27px 22px;overflow:hidden}.stage-header{display:flex;justify-content:space-between;gap:10px;align-items:center}.stage-header p{font-size:17px;font-weight:650;margin-top:8px;letter-spacing:-.3px}.cube-area{height:320px;position:relative;margin-top:3px;background:radial-gradient(ellipse at 50% 55%,#b8a9ff07,transparent 65%)}#cube-model{width:100%;height:100%}.cube-caption{position:absolute;bottom:4px;left:0;right:0;text-align:center;color:#777d91;font-size:10px;pointer-events:none}#cube-fallback{position:absolute;inset:15px;display:grid;place-items:center}#cube-fallback[hidden]{display:none}#cube-fallback svg{height:240px;width:240px}.state-status{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;padding:11px 0 15px;font-size:11px;border-bottom:1px solid var(--line)}.state-item{color:var(--muted)}.state-item.good{color:var(--green)}.state-item:before{content:'○';padding-right:5px}.state-item.good:before{content:'✓'}.question-guidance{padding:26px 0 10px;text-align:center;color:var(--muted);font-size:12px;min-height:105px}.question-guidance strong{font-weight:500;color:#d9d9e5}.question-guidance p{margin-top:5px}.answer-heading{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:18px}.case-name{font-size:12px;font-weight:650;color:var(--accent)}.verified{font-size:10px;color:var(--green);margin-left:12px}.algorithm{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:17px;line-height:1.95;letter-spacing:.8px;min-height:65px;margin:13px 0 15px;overflow-wrap:anywhere}.move{display:inline-block;padding:0 2px;border-radius:3px;cursor:pointer;border:0;font-family:inherit;font-size:inherit;letter-spacing:inherit;color:inherit;line-height:inherit}.move.done{color:#9296a6}.move.current{background:#b8a9ff25;color:#dfd6ff}.move:hover{background:#b8a9ff20;transform:none}.playback{display:flex;justify-content:center;align-items:center;gap:10px}.playback button{font-size:20px;line-height:1.1;height:40px;min-width:40px;padding:6px 12px;border-color:#3e4352}.playback .play-button{background:var(--accent);color:#252039;border-color:var(--accent);min-width:112px;font-size:13px;font-weight:650}.seek-label{display:flex;align-items:center;gap:17px;margin-top:17px;color:var(--muted);font-size:11px}.seek-label span{min-width:130px}.seek-label input{flex:1;min-width:0;accent-color:var(--accent);height:20px}.playback-options{display:flex;gap:20px;align-items:center;margin-top:6px;font-size:11px;color:var(--muted)}.playback-options label{margin-left:auto}.playback-options select{font-size:11px;min-height:28px;padding:2px 4px;margin-left:5px}.step-explanation{color:#aeb2c3;font-size:12px;margin-top:14px;min-height:39px;line-height:1.8}#alternatives{margin-top:13px;border-top:1px solid var(--line);padding-top:13px}#alternatives summary{font-size:12px;color:var(--accent)}.solution-list{margin-top:10px}.solution-row{display:block;text-align:left;width:100%;padding:10px 4px;border-width:0 0 1px;border-radius:0;border-color:var(--line);color:var(--muted);font-size:11px;line-height:1.8}.solution-row strong{font-family:ui-monospace,SFMono-Regular,monospace;color:#d8d9e7;font-size:12px;display:block;overflow-wrap:anywhere}.solution-row[aria-pressed=true]{background:#b8a9ff0c}.favorites-section{margin-top:28px;border-top:1px solid var(--line);padding:18px 0}.favorites-section>summary{display:flex;justify-content:space-between;color:#c7c9d6;font-size:13px}.favorites-section>summary span:first-child:before{content:'＋';color:var(--accent);margin-right:9px}.favorites-section[open]>summary span:first-child:before{content:'－'}.favorites-toolbar{display:flex;align-items:center;gap:9px;margin-top:18px;margin-bottom:18px}.favorites-toolbar p{flex:1}.favorites-toolbar button{font-size:11px;padding:5px 8px}.favorite-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.favorite-card{position:relative;display:flex;align-items:center;gap:11px;background:#1c1e26;padding:12px;border-radius:10px;min-width:0}.favorite-card svg{width:67px;height:67px;flex-shrink:0}.favorite-open{border:0;border-radius:0;padding:0;text-align:left;min-width:0;flex:1}.favorite-open strong{display:block;font-size:12px;color:var(--accent)}.favorite-open small{font-size:10px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.favorite-remove{border:0;color:var(--muted);padding:3px;font-size:16px;align-self:flex-start}.error{font-size:12px;color:var(--error);margin-top:12px}.notice{font-size:12px;padding:10px 14px;background:#b8a9ff12;border-left:2px solid var(--accent);margin-bottom:18px}.notice:empty{display:none}footer{display:flex;align-items:center;gap:20px;color:#777c90;border-top:1px solid var(--line);font-size:10px;padding:20px 0 30px;margin-top:3px}footer a{margin-left:auto;color:#9399ad}body[data-view=simple] .eyebrow,body[data-view=simple] .library-status,body[data-view=simple] .extra-settings,body[data-view=simple] footer #coverage{display:none}body[data-view=simple] .algorithm{font-size:19px}body[data-view=simple] .playback .play-button{min-width:148px;height:44px}.stage{animation:appear .28s ease-out}#answer:not([hidden]){animation:appear .22s ease-out}@keyframes appear{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}[hidden]{display:none!important}@media(min-width:1200px){.stage .cube-area{height:350px}.settings{padding:25px}.workspace{grid-template-columns:342px minmax(0,1fr)}}@media(max-width:800px){.wrap{width:calc(100% - 36px)}.workspace{grid-template-columns:280px minmax(0,1fr);gap:15px}.settings{padding:18px}.stage{padding:19px}.cube-area{height:280px}.playback{gap:6px}.playback button{min-width:33px;padding:6px 9px}.playback .play-button{min-width:88px}.verified{margin-left:7px}.favorite-list{grid-template-columns:repeat(2,1fr)}}@media(max-width:660px){.wrap{width:calc(100% - 36px)}.site-header{height:75px}.brand{font-size:16px}.brand img{width:23px;height:23px;margin-right:7px}.view-switch{padding:3px;gap:1px}.view-switch button{font-size:10px;padding:5px 6px}.intro{padding:26px 0 19px;display:block}.eyebrow{font-size:9px}h1{font-size:27px}.daily{width:100%;margin-top:15px;display:flex;align-items:center;gap:13px;text-align:left;padding:0}.daily>span{white-space:nowrap;font-size:11px}.daily-track{margin:0;flex:1}.offline-strip{gap:10px;font-size:10px;padding-bottom:16px;flex-wrap:wrap}.offline-strip button{font-size:10px}.eo-link{font-size:10px}.workspace{display:block}.settings{padding:20px}.mode-switch{margin-top:15px}.mode-switch button{font-size:19px;padding:10px}.mode-description{min-height:0}.field{margin-top:16px}.scramble-field{margin-top:21px}textarea{font-size:14px;min-height:98px;line-height:1.8}.settings .field-hint{font-size:11px}.stage{margin-top:17px;padding:21px 19px}.stage-header p{font-size:16px}.cube-area{height:310px}.state-status{gap:12px;font-size:10px}.question-guidance{padding-top:23px}.answer-heading{gap:5px}.verified{font-size:9px}.algorithm{font-size:16px;margin-top:12px}.playback{gap:9px}.playback button{min-width:38px}.playback .play-button{min-width:112px}.seek-label{gap:10px}.seek-label span{min-width:120px}.playback-options{gap:12px}.playback-options .text-button{font-size:11px}.favorite-list{grid-template-columns:1fr}.favorites-toolbar{flex-wrap:wrap}.favorites-toolbar p{flex-basis:100%}footer{gap:10px}footer #coverage{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
.score-summary{display:flex;flex-wrap:wrap;gap:7px 18px;margin:-3px 0 12px;padding:10px 0;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.score-summary span:first-child{color:var(--accent);font-weight:650}#score-details{margin:0 0 17px;color:var(--muted);font-size:11px}#score-details summary{color:var(--accent);font-size:11px}#score-details p{margin-top:8px;line-height:1.8}.finger-hint{color:var(--muted);font-size:11px;line-height:1.8;margin:2px 0 10px}.search-actions{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-top:18px}.search-actions button{font-size:12px;padding:7px 12px}#find-more{color:var(--accent);border-color:#70648e}.search-actions .fine{margin-left:auto;font-size:10px}.search-status{font-size:11px;min-height:19px;margin-top:8px}.solution-row span{display:block;margin-top:3px}@media(max-width:660px){.score-summary{gap:6px 13px;font-size:10px}.search-actions .fine{width:100%;margin:1px 0 0}.search-actions button{min-height:36px}}
.stage-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;flex-shrink:0;flex-wrap:wrap;max-width:116px}#lock-view[aria-pressed=true]{color:#e0d8ff;text-decoration:underline}#cube-model[data-view-locked=true] canvas{cursor:default!important;touch-action:pan-y!important}
.main-nav{display:flex;gap:25px;align-self:stretch;align-items:center;margin-left:auto;margin-right:34px}.main-nav a{font-size:13px;color:var(--muted);height:100%;display:flex;align-items:center;border-bottom:2px solid transparent}.main-nav a[aria-current=page]{color:var(--accent);border-bottom-color:var(--accent)}.main-nav a:hover{text-decoration:none;color:var(--text)}body[data-page=library] .offline-strip{padding-top:20px}body[data-page=library] .view-switch{display:none}@media(max-width:660px){.site-header{height:auto;min-height:75px;flex-wrap:wrap;gap:8px;padding-top:15px}.main-nav{order:3;width:100%;height:42px;margin:0;gap:24px}.main-nav a{font-size:12px}.view-switch{margin-left:auto}body[data-page=library] .site-header{padding-top:18px}}
[data-segment-kind]{--segment-color:#d5d8e6}[data-segment-kind=extract]{--segment-color:#82b9ff}[data-segment-kind=process]{--segment-color:#efbc77}[data-segment-kind=insert]{--segment-color:#83d7a3}[data-segment-kind=pair]{--segment-color:#75d5df}[data-segment-kind=eo]{--segment-color:#c1adff}[data-segment-kind=f2l]{--segment-color:#8bdbc1}[data-segment-kind=transform]{--segment-color:#d4a0ef}[data-segment-kind=finish]{--segment-color:#a3d995}[data-segment-kind=auf]{--segment-color:#edcf83}.segment-token[data-segment-kind]{color:var(--segment-color)}.segment-token{display:inline-block;white-space:nowrap}.segment-token.segment-start{border-left:1px solid #70748778;margin-left:.45em;padding-left:.5em;border-top-left-radius:0;border-bottom-left-radius:0}.segment-token.done{opacity:.64}.segment-token.current{opacity:1;color:var(--segment-color);background:#b8a9ff24;box-shadow:0 2px 0 currentColor}.solution-row .segment-token{display:inline-block;margin-top:0}.segment-legend{display:flex;flex-wrap:wrap;gap:5px 13px;font-size:10px;line-height:1.8;margin:-4px 0 15px;color:var(--muted)}.segment-legend span{color:var(--segment-color)}.segment-legend span:before{content:'';display:inline-block;width:5px;height:5px;background:currentColor;border-radius:50%;margin-right:6px;vertical-align:middle}