@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500;600&display=swap');
:root{--bg:#f7f6f2;--panel:#fff;--ink:#242a2d;--muted:#939694;--line:#e9e9e2;--orange:#e96c40;--orange-light:#fff1e9;--green:#4c826d;--mono:'IBM Plex Mono',Consolas,monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px 'Noto Sans SC','Microsoft YaHei',sans-serif}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.4;cursor:default}button,input,textarea{outline-offset:4px}button{transition:background .2s,transform .2s}button:hover:not(:disabled){filter:brightness(.97)}.topbar{height:76px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 4.5vw}.brand{text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:12px;font-weight:700}.brand-icon{display:grid;place-items:center;background:var(--ink);color:#fff;border-radius:9px;font-size:26px;width:33px;height:33px}.brand-divider{color:#c6c8c2;font-weight:400;margin:0 6px}.brand-sub{font:12px var(--mono);color:#949992}.source-tag{font:11px var(--mono);color:#788277;display:flex;gap:8px;align-items:center}.green-dot{width:6px;height:6px;background:#6a9b73;border-radius:50%}main{max-width:1600px;margin:auto;padding:40px 4.5vw 0}.intro{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.eyebrow{font:10px var(--mono);letter-spacing:2px;color:#90968b}h1{font-size:45px;letter-spacing:-2px;margin:10px 0 11px;line-height:1.25;font-weight:800}.title-dot{color:var(--orange)}.intro p{margin:0;color:#848981;font-size:13px}.type-label{display:flex;align-items:center;gap:13px;font-size:12px;padding:16px 22px;border:1px solid #e2e4db;border-radius:8px}.type-label>span{font-size:25px;color:var(--green)}.type-label small{display:block;font-size:10px;margin-top:5px;color:#93988e}.workspace{display:grid;grid-template-columns:245px minmax(420px,1fr) 310px;gap:18px;align-items:stretch}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}.panel-title{display:flex;justify-content:space-between;align-items:center;gap:8px}.panel-title h2{font-size:13px;margin:0;font-weight:600}.panel-title>span{font:9px var(--mono);color:#a0a49b;letter-spacing:.5px}.settings{padding:23px 20px}.settings .panel-title{margin-bottom:27px}label{display:flex;align-items:center;justify-content:space-between;font-size:12px;margin-bottom:10px}label span{font:11px var(--mono);color:#a5a99e}input[type=number],textarea{width:100%;background:#fafbf8;border:1px solid #e5e8df;border-radius:6px;padding:10px 12px;font-family:var(--mono);font-size:13px;color:#485044}input[type=number]{appearance:textfield;-moz-appearance:textfield}input::-webkit-inner-spin-button{appearance:none}.number-row{display:flex;margin-bottom:23px}.number-row input{border-radius:0;text-align:center;border-left:none;border-right:none}.number-row button{border:1px solid #e5e8df;background:#fafbf8;width:39px;font-size:19px;color:#6b7564}.number-row button:first-child{border-radius:6px 0 0 6px}.number-row button:last-child{border-radius:0 6px 6px 0}#m{margin-bottom:23px}textarea{resize:vertical;line-height:1.9}.field-hint{font-size:10px;color:#a0a59b;line-height:1.9;margin:9px 0 16px}.apply{border:1px solid #dfe4d6;background:#f4f6ef;color:#5c6b50;border-radius:6px;padding:11px 4px;width:100%;font-size:11px}.rule{border-top:1px solid var(--line);margin-top:23px;padding-top:22px;position:relative}.rule-icon{font:italic 12px Georgia;border:1px solid #a5b59b;border-radius:50%;color:#7b8d70;width:15px;height:15px;text-align:center;display:inline-block}.rule h3{font-size:11px;display:inline;margin-left:5px;font-weight:500}.rule p{font-size:11px;color:#8e9788;line-height:1.95;margin:12px 0}.rule b{font-weight:500;color:#5c6c52}.formula{background:#f7f8f3;border:1px dashed #dce3d3;text-align:center;border-radius:6px;padding:11px;font:12px var(--mono);color:#6b7c5c}.formula span{color:#acb7a1;margin:0 10px}.example{margin-top:23px;display:flex;gap:8px;flex-wrap:wrap;font-size:10px}.example>span{width:100%;color:#a0a79a}.example button{font-size:10px;border:0;background:none;padding:0;color:#7a876e}#error{color:#bf4c31;font-size:11px;line-height:1.6}.simulation{padding:23px 23px 0;display:flex;flex-direction:column}.live-dot{display:inline-block;width:6px;height:6px;background:var(--orange);border-radius:50%;margin:0 7px 2px 0}.metrics{display:flex;justify-content:center;margin:24px 0 0;background:#fafaf7;border:1px solid #f0f0e9;border-radius:8px;padding:16px 0}.metrics>div{width:33.333%;text-align:center;border-right:1px solid #e9ebe3}.metrics>div:last-child{border:0}.metrics span{display:block;color:#9a9f93;font-size:10px}.metrics strong{display:block;margin-top:4px;font:500 27px var(--mono)}.metrics small{font:11px var(--mono);color:#9a9f93;margin-left:8px}#metric-m{color:var(--orange)}.ring-stage{position:relative;flex:1;min-height:340px;display:flex;align-items:center;justify-content:center}#ring{width:100%;max-height:440px;overflow:visible}.ring-center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;pointer-events:none;min-width:180px}.ring-center>span{display:block;font-size:10px;color:#a0a697}.ring-center>span:first-child{font:8px var(--mono);letter-spacing:1.6px}.ring-center strong{display:block;font-size:25px;font-weight:500;margin:11px 0}.node circle{transition:fill .25s,stroke .25s}.node text{font-family:var(--mono)}.edge{transition:opacity .25s,stroke .25s}.legend{display:flex;justify-content:center;gap:15px;color:#959b8e;font-size:9px;margin:0 0 23px}.legend>span{display:flex;align-items:center;gap:5px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%}.current{background:var(--orange)}.predecessor{background:#779382}.waiting{background:#f7f9f1;border:1px solid #cdd6bd}.removed{background:#eceee7}.playback{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:18px 0;gap:10px}.play-buttons{display:flex;gap:8px;align-items:center}.primary{border:0;background:var(--orange);color:white;border-radius:6px;padding:11px 15px;font-size:11px;min-width:112px;box-shadow:0 3px 6px #e96c4015}.step{border:1px solid #e6e9df;border-radius:6px;padding:10px 12px;background:#fff;font-size:11px;color:#727c67}.step span{margin-left:8px}.icon-button{border:1px solid #e6e9df;border-radius:6px;width:33px;height:36px;background:#fff;color:#87917c;font-size:19px}.speed{display:flex;align-items:center;gap:7px}.speed label{font-size:9px;color:#929a88;margin:0}.speed input{width:55px;accent-color:var(--orange);height:3px}.speed>span{font:9px var(--mono);color:#849077;min-width:22px}.status{font-size:10px;color:#919a86;background:#f8f9f4;margin:0 -23px;padding:12px 20px;min-height:41px;line-height:1.8}.code-panel{padding:23px 0 0;background:#fcfdf9}.code-panel>.panel-title{padding:0 20px}.code-file{margin-top:24px;padding:13px 19px;font:10px var(--mono);color:#87907c;border-top:1px solid #e9ece2;border-bottom:1px solid #e9ece2;background:#f5f7ee}.code-file>span:first-child{color:#8da878;margin-right:8px}.file-badge{float:right;font:9px 'Microsoft YaHei';color:#9ca68f}.code{padding:19px 0;font:10px/2.15 var(--mono);overflow:auto}.code-line{white-space:pre;padding:0 12px 0 0;border-left:3px solid transparent;color:#5e6b52;min-width:max-content}.code-line.active{background:#fce9dc;border-left-color:var(--orange);color:#a84e2a}.line-no{display:inline-block;text-align:right;width:28px;margin-right:12px;color:#bec4b4;user-select:none;font-size:9px}.kw{color:#b57753}.comment{color:#9ba78d;font-size:9px}.pointer-box{margin:0 18px;background:white;border:1px solid #e8ecdf;border-radius:7px;padding:15px}.pointer-box>div{display:flex;justify-content:space-between;font:11px var(--mono);margin-bottom:13px}.pointer-box .dot{margin-right:7px}.pointer-box b{font-weight:400;color:#7c876d;font-size:10px}.pointer-box p{border-top:1px solid var(--line);padding-top:13px;margin:0;font-size:10px;color:#929d85;line-height:1.9;min-height:67px}.code-note{margin:17px 20px;color:#a2ac95;font-size:9px;line-height:1.9}.results{margin-top:18px;display:flex;align-items:center;min-height:116px;padding:23px;gap:25px}.result-heading{min-width:220px}.result-heading .panel-title{gap:13px}.result-heading p{font-size:10px;color:#9da493;margin:12px 0 0}.out-list{flex:1;display:flex;flex-wrap:wrap;align-items:center;gap:8px}.empty{font-size:11px;color:#b0b6a6}.empty span{letter-spacing:3px;margin-left:9px}.out-chip{display:flex;flex-direction:column;gap:4px;align-items:center;animation:arrive .25s ease-out}.out-chip b{width:32px;height:32px;background:#f2f3ed;display:grid;place-items:center;border-radius:6px;color:#818e73;font:12px var(--mono)}.out-chip small{font:8px var(--mono);color:#a9b29f}.out-arrow{font:10px var(--mono);color:#c7cdbd}.winner{border-left:1px solid var(--line);padding-left:27px;min-width:100px;text-align:center}.winner>span{display:block;font-size:10px;color:#a2aa96}.winner strong{display:block;font:500 27px var(--mono);color:var(--orange);margin-top:8px}footer{display:flex;justify-content:space-between;padding:24px 0 27px;font-size:10px;color:#a5ac9c}.footer-dot{margin:0 9px;color:#c7cdbf}@keyframes arrive{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@media(min-width:1450px){.workspace{grid-template-columns:265px minmax(420px,1fr) 335px}.code{font-size:11px}.ring-stage{min-height:390px}}@media(max-width:1150px){main{padding-left:24px;padding-right:24px}.workspace{grid-template-columns:215px minmax(360px,1fr)}.code-panel{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;padding-bottom:20px}.code-panel>.panel-title,.code-file{grid-column:1/-1}.code-file{margin-top:18px}.code{grid-row:3/5}.pointer-box{margin-top:20px}.code-note{align-self:end}.speed{display:none}.result-heading{min-width:180px}.result-heading .panel-title{display:block}.result-heading .panel-title>span{display:block;margin-top:7px}}@media(max-width:650px){.topbar{height:64px;padding:0 20px}.brand-sub,.brand-divider{display:none}.source-tag{font-size:9px}main{padding:27px 16px 0}.intro{margin-bottom:24px}.intro h1{font-size:37px}.intro p{font-size:11px;line-height:1.8}.type-label{display:none}.workspace{display:flex;flex-direction:column;gap:14px}.settings{padding:18px}.settings .panel-title{margin-bottom:18px}#config{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}#config>label:first-child{grid-column:1;grid-row:1}.number-row{grid-column:1;grid-row:2;margin-bottom:14px}label[for=m]{grid-column:2;grid-row:1}#m{grid-column:2;grid-row:2;margin-bottom:14px}label[for=passwords],#passwords,.field-hint,#error,.apply{grid-column:1/-1}#passwords{height:63px}.field-hint br{display:none}.field-hint{margin:7px 0}.rule{margin-top:15px;padding-top:15px}.rule p{margin:8px 0}.formula,.example{display:none}.simulation{padding:20px 16px 0}.ring-stage{min-height:310px}.legend{gap:10px;font-size:9px}.playback{justify-content:center}.status{margin:0 -16px}.metrics{margin-top:20px}.code-panel{display:block}.code{font-size:11px}.results{align-items:flex-start;flex-wrap:wrap;padding:19px;gap:16px}.result-heading{width:100%}.result-heading .panel-title{display:flex}.result-heading .panel-title>span{margin:0}.out-list{min-height:50px}.winner{min-width:77px;padding-left:17px}footer{font-size:9px}footer>span:first-child{display:none}footer{justify-content:center}.ring-center strong{font-size:22px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.workspace > .panel{min-width:0}.number-row input{min-width:0}.number-row button{flex-shrink:0}@media(max-width:650px){.workspace > .panel{width:100%}#config{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.number-row button{width:32px}.number-row input{padding-left:4px;padding-right:4px}.brand{flex-shrink:0}.source-tag{white-space:nowrap}.ring-stage{min-height:290px}.ring-center{min-width:150px}.ring-center>span:last-child{font-size:9px}}