:root{--ground:#f5f6f8;--surface:#fff;--surface-2:#f3f5f8;--line:#dce1e8;--ink:#202938;--ink-2:#425168;--muted:#596579;--accent:#2459a8;--accent-ink:#fff;--accent-soft:#eef4ff;--missing:#992d32;--missing-soft:#faeeee;--warn:#825115;--warn-soft:#fff6e8;--sans:Arial,Helvetica,sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--r:4px;font-family:var(--sans);font-size:14px;line-height:1.5;font-variant-numeric:tabular-nums;color:var(--ink);background:var(--ground);font-synthesis:none;color-scheme:light}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,select,.file-button{cursor:pointer}button,input,select,.file-button{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);color:var(--ink);padding:7px 11px;font-size:12px}button:hover,.file-button:hover{background:var(--surface-2);border-color:var(--accent)}button:disabled{cursor:default;opacity:.45}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:3px}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}button.primary:hover{background:color-mix(in srgb,var(--accent) 88%,var(--ink))}button.secondary{background:var(--surface);width:100%;font-weight:650;border-color:var(--line)}
.app-header{display:flex;align-items:center;justify-content:space-between;background:var(--surface);padding:18px 22px;border-bottom:1px solid var(--line)}
.brand{font-size:19px;letter-spacing:-.02em;font-weight:600;color:var(--ink)}
.brand span{font-size:11px;font-weight:400;letter-spacing:0;margin-left:13px;color:var(--muted)}h1{font-size:21px;letter-spacing:-.015em;line-height:1.2;margin:8px 0 0;font-weight:600}h2{font-size:17px;line-height:1.35;margin:0 0 8px;font-weight:650}h3{font-size:14px}p{font-size:13px;line-height:1.6;margin:6px 0 12px}a{color:var(--accent);text-underline-offset:3px}
.stage{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}
.stage-dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}main{max-width:1760px;margin:auto;padding:20px 30px 34px}
.intro{display:flex;align-items:flex-start;justify-content:space-between;gap:28px}
.intro p:first-child{font-size:14px;max-width:740px;margin-top:0}
.intro .boundary{font-size:12px;max-width:430px;color:var(--muted);margin-top:0}
.toolbar{display:flex;align-items:flex-end;flex-wrap:wrap;gap:9px;padding:15px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
.toolbar button,.toolbar select,.toolbar .file-button{min-height:34px}
.toolbar label{font-size:11px;font-weight:600;color:var(--muted);display:grid;gap:4px}
.toolbar label select{min-width:220px;color:var(--ink);font-weight:400}
.toolbar-end{display:flex;align-items:center;gap:8px;margin-left:auto}
.toolbar-divider{width:1px;height:31px;background:var(--line);margin:0 5px}
.toolbar .file-button{display:block;font-weight:400;color:var(--ink);font-size:13px}
.file-button input{position:absolute;clip:rect(0,0,0,0);width:1px;height:1px;overflow:hidden}
.status{font-size:13px;padding:12px 15px;margin:14px 0;border:1px solid var(--line);background:var(--accent-soft);border-radius:var(--r);line-height:1.5}
.status[data-kind=error]{background:var(--missing-soft);border-color:var(--missing);color:var(--missing)}
.status[data-kind=busy]{background:var(--surface-2);border-color:var(--line);color:var(--ink-2)}
.workspace{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:17px}
.main-column{min-width:0}
.canvas-panel,.results-panel,.inspector{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:hidden}
.canvas-header{display:flex;align-items:flex-start;justify-content:space-between;padding:17px 19px 12px;gap:14px}
.canvas-header p{margin-bottom:0;font-size:11px}#breadcrumbs{display:flex;align-items:center;gap:7px;flex-wrap:wrap;line-height:1.4}#breadcrumbs button{padding:3px 5px;border:0;border-radius:var(--r);color:var(--accent);font-size:14px;font-weight:600;background:transparent}#breadcrumbs button:last-of-type{color:var(--ink)}#breadcrumbs .separator{color:var(--muted);font-size:13px}
.zoom-label{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:6px}
.zoom-label select{padding:5px 7px;font-size:11px}
.canvas-hint{display:flex;justify-content:space-between;gap:15px;padding:0 20px 12px;font-size:11px;color:var(--muted)}
.port-legend{display:flex;align-items:center;gap:5px;white-space:nowrap}
.port-legend i{height:7px;width:7px;border:1.5px solid var(--accent);border-radius:50%;background:var(--surface)}
.port-legend i:nth-of-type(2){margin-left:8px;background:var(--accent)}
.diagram-scroll{height:510px;overflow:auto;background-color:var(--ground);background-image:radial-gradient(var(--line) .8px,transparent .8px);background-size:16px 16px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}#diagram{position:relative;min-height:500px;transform-origin:top left}
.wires{position:absolute;inset:0;overflow:visible;pointer-events:none}
.wire{fill:none;stroke:var(--muted);stroke-width:1.5;stroke-linejoin:round;opacity:.72}
.wire.feedback{stroke:var(--muted);stroke-dasharray:4 3}
.block{position:absolute;width:254px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:none;cursor:default}
.block.selected{outline:2px solid var(--accent);outline-offset:2px}
.block.inspected{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.block.subsystem{border-color:var(--accent);background:var(--surface)}
.block.inport,.block.outport{border-color:var(--line);background:var(--surface-2)}
.block-top{display:flex;align-items:flex-start;gap:8px;padding:11px 11px 9px;border-bottom:1px solid var(--line);min-height:58px}
.block-top input{width:14px;height:14px;accent-color:var(--accent);margin:2px 0 0;flex:none;cursor:pointer}
.block-name{font-size:12px;font-weight:650;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block;max-width:190px}
.block-kind{display:block;font-size:10px;color:var(--muted);margin-top:3px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;max-width:190px}
.port-row{position:absolute;left:0;right:0;display:flex;justify-content:space-between;height:22px;align-items:center;font-size:10px;pointer-events:none}
.port-label{max-width:111px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:18px;color:var(--ink-2)}
.port-label.input{padding-left:11px}
.port-label.output{padding-right:11px;text-align:right;margin-left:auto}
.port-dot{position:absolute;width:8px;height:8px;top:7px;border:1.5px solid var(--accent);border-radius:50%;background:var(--surface)}
.port-dot.input{left:-5px}
.port-dot.output{right:-5px;background:var(--accent)}
.open-block{position:absolute;bottom:8px;left:10px;right:10px;padding:5px;border:0;background:var(--accent-soft);font-size:11px;color:var(--accent)}
.block-id{position:absolute;left:11px;bottom:7px;font-size:9px;color:var(--muted);max-width:230px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.canvas-footer{display:flex;align-items:center;gap:13px;padding:9px 18px;font-size:11px;min-height:42px}
.canvas-footer #nativeCount{margin-left:auto;text-align:right}
.text-button{font-size:11px;padding:4px 2px;border:0;background:none;color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.muted{color:var(--muted)}
.small{font-size:11px}
.inspector{align-self:start}
.inspector>section{padding:19px;border-bottom:1px solid var(--line)}
.inspector>section:last-child{border-bottom:0}
.inspector-kicker{font-size:10px;letter-spacing:1.2px;color:var(--muted);font-weight:700;margin-bottom:10px}
.inspector label{display:grid;gap:5px;font-size:11px;margin:11px 0;color:var(--ink-2)}
.inspector input,.inspector select{width:100%;font-size:12px;padding:8px 9px}
.inspector input[type=checkbox]{width:auto;margin:0;accent-color:var(--accent)}
.inspector fieldset{border:1px solid var(--line);padding:10px;border-radius:var(--r);margin:13px 0}
.inspector legend{font-size:11px;color:var(--muted);padding:0 5px}
.inspector fieldset label{display:flex;align-items:center;gap:7px;margin:7px 0}
.inspector fieldset p{font-size:11px}
.inspector .path{font:11px/1.6 var(--mono);overflow-wrap:anywhere;background:var(--surface-2);padding:8px;border-radius:var(--r)}
.inspector .port-list{margin:8px 0 13px;padding:0;list-style:none}
.port-list li{font-size:11px;display:flex;justify-content:space-between;gap:10px;padding:5px 0;border-bottom:1px solid var(--line)}
.port-list li span{color:var(--muted);font-size:10px}
.port-list li b{font-weight:500;overflow-wrap:anywhere}
.inspector .button-row{display:flex;gap:8px;margin:13px 0}
.inspector .button-row button{font-size:11px;padding:7px 9px}
.inspector .parameter-fields{max-height:280px;overflow:auto;padding-right:5px}
.inspector .param-help{font-size:10px;color:var(--muted)}
.runtime-note{background:var(--surface-2)}
.runtime-note p,.runtime-note a{font-size:11px}
.runtime-note h3{margin-top:0}
.results-panel{margin-top:17px;padding:19px}
.section-header{display:flex;justify-content:space-between;align-items:flex-start;gap:15px}
.section-header p{font-size:11px}
.section-header button{font-size:11px}
.empty-results{border:1px dashed var(--line);padding:28px;text-align:center;font-size:12px;color:var(--muted);line-height:1.7;border-radius:var(--r);background:var(--surface-2)}
.signal-picker{display:flex;align-items:center;gap:12px;font-size:12px}
.signal-picker select{min-width:260px;max-width:100%;font-size:12px}#plot{height:240px;margin-top:18px}#plot svg{width:100%;height:240px}
.result-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:15px 0}
.result-summary div{padding:11px;background:var(--surface-2);border-radius:var(--r);font-size:11px;color:var(--muted)}
.result-summary b{display:block;margin-top:4px;font-size:16px;color:var(--ink);font-weight:600}
.results-panel details{font-size:12px}
.results-panel summary{cursor:pointer;color:var(--accent);padding:5px 0}
.trace-table{max-height:210px;overflow:auto;margin-top:12px}table{border-collapse:collapse;width:100%;font-size:12px}th,td{text-align:left;padding:7px 12px;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}th{position:sticky;top:0;background:var(--surface-2)}
.diagnostics{border:1px solid var(--warn);border-radius:var(--r);background:var(--warn-soft);padding:15px;margin:-3px 0 14px}
.diagnostics h2{font-size:14px}
.diagnostics p{font-size:12px;margin:5px 0}
.diagnostics code{font-size:11px;overflow-wrap:anywhere}
.diagnostics ul{padding-left:17px;margin:8px 0 0}
.diagnostics li{margin:7px 0;font-size:12px;line-height:1.6}footer{padding:19px 31px;border-top:1px solid var(--line);font-size:10px;color:var(--muted);display:flex;justify-content:space-between;gap:15px;background:var(--surface)}
.busy-cursor{cursor:progress}
.empty-canvas{padding:45px;color:var(--muted);font-size:14px}#exposedOutputs{max-height:220px;overflow:auto}
@media(max-width:1100px){.workspace{grid-template-columns:minmax(0,1fr) 280px}
.toolbar-end{margin-left:0}
.intro{display:block}
.intro .boundary{max-width:none}
.app-header{padding:18px 22px}
.toolbar{gap:8px}main{padding:18px}
.brand span{display:none}}
@media(max-width:820px){.workspace{grid-template-columns:1fr}
.inspector{display:grid;grid-template-columns:1fr 1fr}
.inspector .runtime-note{grid-column:1/-1}
.app-header{align-items:flex-start;gap:15px}
.stage{font-size:10px;max-width:130px;line-height:1.6}h1{font-size:21px}
.toolbar{align-items:flex-end}
.toolbar-divider{display:none}
.toolbar label select{min-width:190px}
.canvas-hint .port-legend{display:none}
.diagram-scroll{height:450px}
.canvas-footer{flex-wrap:wrap}
.result-summary{grid-template-columns:1fr 1fr}}
@media(max-width:500px){main{padding:12px}
.inspector{grid-template-columns:1fr}
.toolbar-end{flex-wrap:wrap}
.toolbar{padding:11px}
.signal-picker{display:block}
.signal-picker select{width:100%;min-width:0;margin-top:7px}
.app-header{padding:18px}
.canvas-header{padding:14px}
.canvas-hint{padding:0 14px 11px}
.stage{display:none}
.results-panel{padding:14px}footer{display:block;line-height:1.8}
.block{box-shadow:none}}
.canvas-tools{display:flex;align-items:center;gap:15px;padding:0 20px 14px;flex-wrap:wrap}
.canvas-tools label{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--muted)}
.canvas-tools select{padding:5px 7px;font-size:11px;max-width:240px}
.canvas-tools #canvasScope{font-size:10px;margin-left:auto}
@media(max-width:700px){.canvas-tools{gap:9px}
.canvas-tools #canvasScope{margin-left:0}
.canvas-tools select{max-width:170px}}
.port-editor{margin:16px 0;padding:12px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:12px}
.port-editor summary{cursor:pointer;color:var(--accent);font-weight:600}
.port-editor .param-help{margin-top:9px}
.port-editor button{font-size:11px;width:100%;margin-top:7px}