:root{color-scheme:dark;--bg:#0d1117;--panel:#141b24;--border:#2b3441;--text:#e6edf3;--muted:#9ba9b9;--green:#b2f576;--blue:#78b9ff;--purple:#d3a0ef}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.55 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}main{max-width:1440px;margin:auto;padding:22px 32px}a{color:#a9caff;text-decoration:none}a:hover{text-decoration:underline}nav,nav>div{display:flex;justify-content:space-between;gap:24px}nav{font-size:13px;margin-bottom:24px}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.eyebrow{font:11px/1.5 ui-monospace,monospace;letter-spacing:.12em;color:var(--muted)}h1{font-size:48px;letter-spacing:-.05em;line-height:1.05;margin:9px 0 12px}h1 span{color:var(--green)}header p{margin:0;color:var(--muted);font-size:16px}.local{font:12px ui-monospace,monospace;padding:8px 12px;border:1px solid var(--border);border-radius:24px;color:var(--muted);white-space:nowrap}.local i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:6px}.toolbar{display:flex;gap:10px;align-items:center;padding:12px;background:#141b24;border:1px solid var(--border);border-radius:9px}button,input,select,textarea{font:inherit}button{cursor:pointer;background:#1b2633;color:var(--text);border:1px solid #394656;border-radius:5px;padding:9px 13px;font-size:13px;white-space:nowrap}button:hover{border-color:var(--green);background:#263443}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--green);color:#17220e;border-color:var(--green);font-weight:650;min-width:140px}.primary:hover{background:#c7ff97}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--green);outline-offset:3px}input,select,textarea{background:#0d141c;color:var(--text);border:1px solid #394656;border-radius:4px;padding:6px 8px}input[type=number]{width:80px}input[type=checkbox]{accent-color:var(--green)}.toolbar-label{display:flex;gap:7px;align-items:center;font-size:12px;color:var(--muted);margin-left:7px}.toolbar select{font-size:12px}.compare{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:12px;margin-left:auto;white-space:nowrap}.more{position:relative}.more summary{font-size:12px;cursor:pointer;padding:8px}.options{position:absolute;right:0;top:40px;background:#17212d;box-shadow:0 12px 30px #0008;border:1px solid #455367;border-radius:7px;width:280px;padding:16px;z-index:10;display:grid;gap:12px}.options label{display:grid;gap:5px;color:var(--muted);font-size:12px}.options small{color:var(--muted)}.runline{display:flex;align-items:center;justify-content:space-between;padding:10px 2px 14px;gap:15px;font-size:12px;color:var(--muted)}#clock{font-family:ui-monospace,monospace;white-space:nowrap}.workspace{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(320px,1fr);gap:16px;align-items:stretch}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;overflow:hidden}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--border)}.panel-head h2{font-size:14px;font-weight:600;margin:0}.panel-head>span,.inspector-actions>span{color:var(--muted);font:10px ui-monospace,monospace;letter-spacing:.035em}.flow{display:flex;align-items:center;justify-content:center;gap:23px;padding:23px 20px 38px;position:relative;background:linear-gradient(180deg,#17212b,#141b24)}.flow>span{display:grid;text-align:center;gap:3px}.flow b{font-size:14px;font-weight:550}.flow small{font-size:11px;color:var(--muted)}.flow>i{font-style:normal;color:#6a7c8f;font-size:19px}.feedback{position:absolute;bottom:11px;font:10px ui-monospace,monospace;color:#7e948b;letter-spacing:.02em}.table-head{display:grid;grid-template-columns:160px 1fr 64px;gap:12px;padding:9px 16px;color:var(--muted);font:10px ui-monospace,monospace;background:#101720;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.table-head>span:last-child{text-align:right}.programs{min-height:424px}.program-row{display:grid;grid-template-columns:160px minmax(0,1fr) 64px;align-items:center;gap:12px;width:100%;padding:9px 16px;text-align:left;border:0;border-bottom:1px solid #25303c;border-radius:0;background:transparent;min-height:44px}.program-row:last-child{border-bottom:0}.program-row:hover{background:#1c2a34}.program-row.active{background:#20322c;box-shadow:inset 3px 0 var(--green)}.program-code{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font:12px ui-monospace,monospace;color:#d5e1eb}.source-label{font:9px ui-monospace,monospace;color:#8a9dad;display:block;margin-top:3px}.tape{display:flex;gap:1px;height:21px;overflow:hidden;align-items:stretch}.byte{min-width:2px;flex:1;border-radius:1px;background:#23303d}.byte.pad{background:#1a222c!important;border-bottom:1px solid #3b4755}.reward{font:11px ui-monospace,monospace;color:var(--green);text-align:right}.empty{height:424px;display:flex;align-items:center;justify-content:center;flex-direction:column;color:var(--muted);text-align:center;padding:24px}.empty b{color:#d3dce6;font-size:14px;font-weight:500}.empty p{font-size:13px;line-height:1.8}.empty-symbol{font:40px ui-monospace,monospace;color:#425747;letter-spacing:.15em;margin-bottom:22px}.panel-foot{display:flex;justify-content:space-between;gap:10px;padding:12px 16px;font-size:11px;color:var(--muted);border-top:1px solid var(--border)}.key{display:inline-block;width:8px;height:8px;border-radius:1px;margin:0 4px 0 7px}.key.emitted{background:#78aa7d}.key.padding{background:#1a222c;border:1px solid #455367}.right-column{display:flex;flex-direction:column;gap:16px}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:15px;padding:15px 20px 7px}.metrics strong{display:block;font:28px ui-monospace,monospace;letter-spacing:-.03em}.metrics span{font-size:11px;color:var(--muted)}.chart-legend{display:flex;gap:15px;font-size:11px;padding:8px 17px 0;align-items:center;flex-wrap:wrap}.green{color:var(--green)}.blue{color:var(--blue)}.purple{color:var(--purple)}.muted{color:var(--muted)}canvas{display:block;width:100%}#training-chart{height:142px}#probe-chart{height:126px}.caption{font-size:11px;line-height:1.6;color:var(--muted);margin:4px 17px 13px}.tabs{display:flex;gap:5px;padding:12px 15px 0}.tabs button{padding:5px 9px;font-size:11px;background:transparent;border-color:transparent;color:var(--muted)}.tabs button.selected{color:var(--green);border-color:#52654b;background:#203023}.probe-values{display:flex;justify-content:space-between;margin:4px 17px 9px;gap:8px;font-size:11px;color:var(--muted)}.probe-values b{font:13px ui-monospace,monospace;margin-left:5px}.context-stat{display:flex;justify-content:space-between;padding:10px 17px 3px;border-top:1px solid var(--border);font-size:11px;color:var(--muted)}.context-stat b{font:12px ui-monospace,monospace;color:var(--text)}.context-caption{font-size:10px;margin-bottom:12px}.inspector{margin-top:16px}.inspector-actions{display:flex;gap:15px;align-items:center}.inspector-actions button{font-size:11px;padding:4px 9px}.inspector-body{display:grid;grid-template-columns:1fr 1.1fr;gap:20px;padding:18px}.program-detail{min-width:0}#selected-code{display:block;overflow-wrap:anywhere;white-space:normal;color:var(--green);font:17px/1.7 ui-monospace,monospace;min-height:32px}.program-meta{font-size:11px;line-height:1.7;color:var(--muted);margin:8px 0}.byte-values{font:11px/1.9 ui-monospace,monospace;color:#c4d2de;overflow-wrap:anywhere;max-height:85px;overflow:auto}.byte-values span{display:inline-block;min-width:30px;padding:0 3px;text-align:center;border-right:1px solid #293745}.byte-values .pad{color:#687a8d;background:#101720}.prediction-detail .chart-legend{padding:0 0 3px}.prediction-detail .caption{margin:3px 0 0;font-size:10px}#prediction-chart{height:115px}.under-lab{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}.explanation summary{padding:14px 17px;cursor:pointer;font-size:13px;color:#b4c2cf}.explanation>div{padding:0 17px 13px}.explanation p{font-size:13px;color:var(--muted);line-height:1.8}.explanation p b{color:#d4e2eb;font-weight:500}.explanation .formula{font:12px/1.8 ui-monospace,monospace;color:var(--green);background:#0e151d;padding:12px;border-radius:4px;overflow-wrap:anywhere}.sandbox{grid-column:1/-1}.sandbox textarea{display:block;width:100%;resize:vertical;color:var(--green);font-family:ui-monospace,monospace;margin:8px 0}.sandbox label{font-size:12px;color:var(--muted)}.sandbox-controls{display:flex;gap:15px;align-items:center}.sandbox .small{font-size:11px}footer{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:11px;color:#8d9eaf;padding:20px 0 5px;margin-top:20px;border-top:1px solid var(--border)}#error{color:#ffb3a9;padding:12px 16px;margin-bottom:14px;background:#3a2021;border:1px solid #774144;border-radius:5px;white-space:pre-wrap;overflow-wrap:anywhere}body.running .local i{box-shadow:0 0 10px #b2f57670}@media(min-width:1350px){.workspace{grid-template-columns:minmax(0,1.65fr) minmax(360px,1fr)}.program-row,.table-head{grid-template-columns:190px minmax(0,1fr) 70px}}@media(max-width:1100px){main{padding:20px}.toolbar{flex-wrap:wrap}.compare{margin-left:0}.more{margin-left:auto}.toolbar-label{margin-left:0}.program-row,.table-head{grid-template-columns:115px minmax(0,1fr) 55px;gap:8px}.flow{gap:15px}.panel-head>span{font-size:9px}.workspace{grid-template-columns:minmax(0,1.2fr) minmax(300px,1fr)}.panel-foot{font-size:10px}.tabs{gap:1px;padding-left:10px}.tabs button{padding:5px 7px}}@media(max-width:780px){main{padding:18px 14px}.local{display:none}header p{font-size:14px}h1{font-size:40px}.workspace{grid-template-columns:1fr}.right-column{display:grid;grid-template-columns:1fr 1fr;gap:12px}.panel-head{padding:11px 12px}.right-column .panel-head>span{display:none}.metrics{padding:13px 12px}.metrics strong{font-size:24px}.tabs{flex-wrap:wrap}.tabs button{font-size:10px}.probe-values{flex-wrap:wrap}.program-row,.table-head{grid-template-columns:155px minmax(0,1fr) 60px}.programs,.empty{min-height:360px}.inspector-body{grid-template-columns:1fr}.under-lab{grid-template-columns:1fr}.runline{align-items:flex-start}.context-stat{flex-wrap:wrap;gap:5px}.toolbar .compare{margin-left:auto}.chart-legend{gap:9px}.options{width:270px}.table-head{font-size:9px}}@media(max-width:490px){.right-column{grid-template-columns:1fr}.right-column .panel-head>span{display:block}.toolbar{gap:8px}.toolbar .compare{margin-left:0}.toolbar-label{font-size:11px}.toolbar-label select{max-width:160px}header .eyebrow{font-size:9px}.program-row,.table-head{grid-template-columns:100px minmax(0,1fr) 49px;padding-left:10px;padding-right:10px;gap:7px}.program-code{font-size:11px}.reward{font-size:10px}.flow{gap:13px;padding-left:10px;padding-right:10px}.flow b{font-size:13px}.flow small{font-size:10px}.panel-foot{flex-wrap:wrap}.runline{font-size:11px}.runline #status{max-width:65%}#clock{white-space:normal;text-align:right}.table-head>span:nth-child(2){font-size:8px}.inspector-actions{gap:7px}.inspector-actions>span{font-size:9px}.sandbox-controls{flex-wrap:wrap}nav{font-size:12px}nav>div{gap:16px}}
header p{max-width:930px;line-height:1.7}header{gap:28px}.mobile-notice{display:none;background:#243027;border:1px solid #576b48;padding:12px;border-radius:6px;margin-bottom:18px;font-size:13px}.help-intro{color:var(--muted);font-size:12px;margin:-5px 0 18px}.help-intro button{font-size:11px;margin-left:8px;padding:5px 8px}.help-button{padding:3px 7px;border-radius:50%;font-size:11px}.settings,.diagnostics,.custom-eval{margin-top:14px}.settings summary,.diagnostics summary{cursor:pointer;padding:13px 17px;color:#c0d1df}.settings-body{padding:0 17px 18px}.settings-body p,.diagnostics p{font-size:12px;color:var(--muted)}.config-fields{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.config-fields label{display:grid;gap:5px;font-size:12px}.config-fields input{width:100%;max-width:160px}.shape{display:flex;align-items:center;justify-content:center;gap:12px;margin:20px 0;font:12px/1.8 ui-monospace,monospace}.shape span{border:1px solid #465667;border-radius:6px;padding:12px;background:#101821}.shape b{color:var(--green)}#config-status{font-size:12px;margin-left:12px}.sort-label{font-size:11px;white-space:nowrap}.sort-label select{font-size:10px;padding:3px}.diagnostic-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:0 18px 18px}.diagnostic-grid h3{font-size:13px;font-weight:500}.diagnostic-grid canvas{height:180px}.custom-eval textarea{display:block;width:100%;margin-top:12px;resize:vertical}.custom-eval .settings-body{padding-top:14px}#eval-result{margin-top:12px;font-size:13px}#custom-chart{height:170px;margin-top:12px}.probe-instructions{margin-top:12px}.attention-result{animation:result-glow 2s ease-out}@keyframes result-glow{from{box-shadow:0 0 0 3px var(--green)}to{box-shadow:none}}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}@media(max-width:780px){.mobile-notice{display:block}.config-fields{grid-template-columns:1fr 1fr}.shape{flex-direction:column}.shape i{transform:rotate(90deg)}.diagnostic-grid{grid-template-columns:1fr}.help-intro button{margin:8px 5px 0 0}.curriculum .panel-head{flex-wrap:wrap}}
#execution{border-top:1px solid var(--border)}#execution summary{padding:13px 18px;cursor:pointer;font-size:13px}.sim-body{padding:0 18px 18px}.sim-body p{font-size:12px;color:var(--muted)}.sim-controls{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.sim-controls label{font-size:12px}.sim-label{font-size:11px;color:var(--muted);margin:14px 0 4px}.sim-source,.sim-code{display:block;position:relative;max-height:100px;overflow:auto;overflow-wrap:anywhere;white-space:normal;background:#0c141c;padding:10px;line-height:1.8}.sim-code span,.sim-source span,.sim-code mark,.sim-source mark{padding:0 2px}.sim-tape{display:flex;gap:4px;overflow:auto}.sim-tape>span{min-width:40px;text-align:center;background:#101821;padding:5px}.sim-tape small,.sim-tape b{display:block}.sim-tape small{font-size:9px;color:var(--muted)}.sim-tape .current{outline:1px solid var(--green);color:var(--green)}mark{background:var(--green);color:#17220e}.sim-output{font:12px/1.7 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere;padding:10px;background:#101821}
