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.ip-head:before{content:"";background:var(--rule);border-radius:2px;width:32px;height:3px;position:absolute;top:4px;left:50%;transform:translate(-50%)}:root[data-panel=closed] #ip-close,body[data-panel=closed] #ip-close{display:none}.page-nav,.toast{bottom:calc(var(--drawer-handle-h) + 12px)}:root[data-panel=open] .page-nav,:root[data-panel=open] .toast,body[data-panel=open] .page-nav,body[data-panel=open] .toast{bottom:calc(var(--panel-height) + 12px)}main{margin-bottom:calc(var(--drawer-handle-h) + 80px)}}#interp-panel{background:var(--panel-bg);color:var(--fg);flex-direction:column;font-family:-apple-system,Segoe UI,Inter,system-ui,sans-serif;font-size:13px;display:flex;overflow:hidden}#interp-panel:fullscreen{width:100vw;max-width:none;height:100vh;max-height:none;box-shadow:none;z-index:1000;border:0;position:fixed;inset:0;transform:none}#interp-panel:fullscreen .ip-loaded{height:var(--loaded-h,min(54vh, 620px));max-height:none}#interp-panel:fullscreen .ip-panel-resize{display:none}.ip-head{border-bottom:1px solid var(--rule);flex:none;justify-content:space-between;align-items:center;gap:6px;min-height:38px;padding:6px 10px 0;display:flex;container:ip-head/inline-size}.ip-title{letter-spacing:.01em;margin-right:2px;font-size:12px;font-weight:600}.ip-title .ip-lambda{font-family:var(--font-body);color:var(--accent);margin-right:2px;font-size:1.15em;font-style:italic}.ip-close{color:var(--fg-dim);cursor:pointer;background:0 0;border:0;padding:2px 6px;font-size:20px;line-height:1}.ip-close:hover{color:var(--accent)}.ip-minimize{color:var(--fg-dim);cursor:pointer;background:0 0;border:0;padding:2px 8px;font-size:24px;line-height:1;display:none}.ip-minimize:hover{color:var(--accent)}.ip-loaded{height:var(--loaded-h,auto);max-height:var(--loaded-h,38%);background:color-mix(in srgb, var(--code-bg) 50%, var(--panel-bg));flex:none;padding:0;overflow:auto}.ip-loaded-resize{cursor:ns-resize;background:var(--rule);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);flex:0 0 6px;position:relative}.ip-loaded-resize:before{content:"";background:color-mix(in srgb, var(--fg-dim) 50%, transparent);border-radius:1px;width:36px;height:2px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.ip-loaded-resize:hover{background:color-mix(in srgb, var(--accent) 18%, var(--rule))}.ip-loaded-resize.dragging{background:color-mix(in srgb, var(--accent) 30%, var(--rule))}.ip-panel-resize{z-index:2;background:0 0;position:absolute}.ip-panel-resize:hover,.ip-panel-resize.dragging{background:color-mix(in srgb, var(--accent) 25%, transparent)}@media (width>=1100px){.ip-panel-resize{cursor:ew-resize;width:6px;top:0;bottom:0;left:0}}@media (width<=1099px){.ip-panel-resize{cursor:ns-resize;height:6px;top:0;left:0;right:0}}.ip-loaded-empty{padding:12px 14px;font-size:12.5px;font-style:italic}#ip-loaded-body pre.code{font-size:var(--code-ui-size);background:0 0;border:0;margin:0;padding:0}.cm-live-eval{color:color-mix(in srgb, var(--fg-dim) 80%, transparent);white-space:pre;-webkit-user-select:none;user-select:none;pointer-events:none;font-style:italic}.cm-live-eval-val{color:color-mix(in srgb, var(--accent) 65%, var(--fg-dim))}.cm-live-eval-def{color:var(--fg-dim);opacity:.7}.cm-live-eval-err{color:var(--err,#d04)}.cm-line-marked{background:#c5404017}#ip-loaded-body .cm-lineNumbers .cm-gutterElement{cursor:pointer}#ip-loaded-body .cm-lineNumbers .cm-gutterElement:hover{color:#c54040}#ip-loaded-body .cm-lineNumbers .cm-gutterElement.cm-line-number-marked{color:#c54040;font-weight:700}#ip-loaded-body .cm-lineNumbers .cm-gutterElement.cm-line-number-marked:before{content:"●";margin-right:3px;font-size:8px;line-height:1;display:inline-block;transform:translateY(-1px)}#ip-loaded-body.ip-loaded-editor{height:100%;padding:0}#ip-loaded-body .cm-editor{font-size:var(--code-ui-size);background:0 0;height:100%;min-height:100%}#ip-loaded-body .cm-editor.cm-focused{outline:none}#ip-loaded-body .cm-scroller,#ip-loaded-body .cm-content{padding:0}#ip-loaded-body .cm-line.cm-indent-wrap{text-indent:calc(-1 * var(--ind,0));padding-inline-start:var(--ind,0)}.ip-controls{border-bottom:1px solid var(--rule);flex-wrap:wrap;flex:none;align-items:center;gap:6px;padding:8px 14px;display:flex;container:ip-controls/inline-size}.ip-controls button{font:inherit;border:1px solid var(--rule);color:var(--fg);cursor:pointer;background:0 0;border-radius:4px;padding:4px 10px;font-size:12.5px}.ip-controls .ip-iconbtn{place-items:center;width:30px;height:26px;padding:0;display:inline-grid}.ip-controls .ip-icon{width:16px;height:16px;display:block}.ip-controls .ip-mark-jump{align-items:center;gap:4px;padding-inline:8px;font-size:11.5px;display:inline-flex}.ip-controls .ip-mark-jump>span{color:#c54040;font-weight:700}#ip-run .ip-icon-pause,#ip-run.is-running .ip-icon-play{display:none}#ip-run.is-running .ip-icon-pause{display:block}.ip-controls button:hover:not([disabled]){border-color:var(--accent);color:var(--accent)}.ip-controls button[disabled]{opacity:.4;cursor:not-allowed}.ip-controls .ip-status{font-variant:small-caps;letter-spacing:.04em;padding:0 4px;font-size:11.5px}.ip-controls .ip-reset{margin-left:auto}.ip-controls .ip-revert-block{margin-left:4px;padding:4px 8px;font-size:11.5px}.ip-controls .ip-revert-block[hidden]{display:none}.ip-controls .ip-speed{align-items:center;gap:6px;padding:0 4px;display:inline-flex}.ip-controls .ip-speed input[type=range]{width:80px;accent-color:var(--accent);margin:0}.ip-controls .ip-speed-label{font-variant:small-caps;letter-spacing:.04em;min-width:38px;font-size:11px}.ip-settings-wrap{display:inline-grid;position:relative}#ip-settings-toggle[aria-expanded=true]{border-color:var(--accent);color:var(--accent)}#ip-settings-menu{--settings-control-w:132px;background:var(--panel-bg);width:min(296px,100vw - 24px);color:var(--fg);border:1px solid var(--rule);box-shadow:var(--panel-shadow);font-family:var(--font-body);z-index:45;border-radius:8px;flex-direction:column;gap:9px;padding:12px;font-size:14px;display:flex;position:absolute;top:calc(100% + 8px);right:0}#ip-settings-menu[hidden]{display:none}.ip-editor-menu{z-index:120;border:1px solid var(--rule);background:var(--panel-bg);min-width:210px;box-shadow:var(--panel-shadow);border-radius:10px;padding:6px;position:fixed}.ip-editor-menu[hidden]{display:none}.ip-editor-menu-item{width:100%;color:var(--fg);font:12.5px/1.35 var(--font-body);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:7px;margin:0;padding:8px 10px;display:block}.ip-editor-menu-item:hover,.ip-editor-menu-item:focus-visible{background:color-mix(in srgb, var(--accent) 10%, transparent);color:var(--fg);outline:none}#ip-settings-menu select{font:inherit;border:1px solid var(--rule);background:color-mix(in srgb, var(--panel-bg) 88%, var(--code-bg));color:var(--fg);width:var(--settings-control-w);box-sizing:border-box;border-radius:4px;justify-self:end;min-height:28px;padding:3px 7px;font-size:13px}#ip-settings-menu input[type=range]{min-width:0;accent-color:var(--accent);flex:auto;margin:0}.ip-settings-range{width:var(--settings-control-w);justify-content:flex-end;justify-self:end;align-items:center;gap:8px;min-width:0;display:inline-flex}.ip-settings-range .ip-speed-label{text-align:right;flex:0 0 42px}.ip-settings-text-button{font:inherit;width:var(--settings-control-w);border:1px solid var(--rule);background:color-mix(in srgb, var(--panel-bg) 88%, var(--code-bg));min-height:28px;color:var(--fg);cursor:pointer;border-radius:4px;justify-self:end;padding:4px 8px;font-size:12px}.ip-settings-text-button:hover{border-color:var(--accent);color:var(--accent)}@media (width<=1099px){#ip-settings-menu{top:auto;bottom:calc(100% + 8px)}}.ip-depth-label{align-items:center;gap:6px;width:100%;min-width:0;display:inline-flex}.ip-depth-label .set-label{white-space:nowrap;min-width:0}.ip-help-tip{appearance:none;box-sizing:border-box;background:color-mix(in srgb, var(--panel-bg) 82%, var(--code-bg));width:18px;height:18px;color:color-mix(in srgb, var(--fg-dim) 82%, transparent);cursor:help;border:1px solid;border-radius:50%;outline:none;flex:none;justify-content:center;align-items:center;padding:0;font-size:0;line-height:1;display:inline-flex;position:relative}.ip-help-tip:before{content:"?";font:700 11px/1 var(--font-body);display:block;transform:translateY(-.3px)}.ip-help-icon{display:none}.ip-help-tip:hover{background:color-mix(in srgb, var(--accent) 10%, transparent);color:var(--accent)}.ip-help-tip:focus-visible{background:color-mix(in srgb, var(--accent) 10%, transparent);color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb, var(--accent) 24%, transparent)}.ip-tooltip{border:1px solid var(--rule);background:var(--panel-bg);color:var(--fg);box-shadow:var(--panel-shadow);font:12.5px/1.4 var(--font-body);letter-spacing:0;text-transform:none;font-variant:normal;text-align:left;pointer-events:none;opacity:0;z-index:80;border-radius:6px;padding:9px 11px;transition:opacity .12s,transform .12s;position:absolute;top:calc(100% + 9px);left:12px;right:12px;transform:translateY(3px)}.ip-tooltip:after{content:"";border-left:1px solid var(--rule);border-top:1px solid var(--rule);background:var(--panel-bg);width:10px;height:10px;position:absolute;top:-6px;left:90px;transform:rotate(45deg)}.ip-help-tip:hover+.ip-tooltip,.ip-help-tip:focus-visible+.ip-tooltip{opacity:1;transform:translateY(0)}@container ip-controls (width<=492px){.ip-controls .ip-speed{display:none}}@container ip-controls (width<=357px){.ip-controls .ip-status{display:none}}@container ip-controls (width<=322px){.ip-controls .ip-mark-jump{display:none}}@container ip-controls (width<=257px){.ip-controls .ip-title{display:none}}.ip-inputs{border-bottom:1px solid var(--rule);flex-wrap:wrap;align-items:center;gap:6px 10px;padding:8px 14px;font-size:12px;display:flex}.ip-inputs[hidden]{display:none}.ip-inputs .ip-input-label{font-family:var(--font-code);color:var(--fg-dim);font-size:12px}.ip-inputs .ip-input-row{align-items:center;gap:4px;display:inline-flex}.ip-inputs input[type=text]{font:inherit;font-family:var(--font-code);background:color-mix(in srgb, var(--code-bg) 50%, transparent);color:var(--fg);border:1px solid var(--rule);border-radius:3px;width:7em;min-width:0;padding:2px 6px}.ip-inputs input[type=text]:focus{border-color:var(--accent);outline:none}.ip-inputs input[type=text].invalid{border-color:#c54040}.ip-inputs .ip-input-hint{color:var(--fg-dim);font-size:11px;font-style:italic}.ip-output-tabs{border-bottom:1px solid var(--rule);background:color-mix(in srgb, var(--panel-bg) 92%, var(--bg));align-items:center;gap:4px;padding:6px 14px;display:flex}.ip-output-tab{font:inherit;color:var(--fg-dim);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:4px;padding:3px 9px;font-family:-apple-system,system-ui,sans-serif;font-size:11.5px;line-height:1.4;position:relative}.ip-output-tab:hover{color:var(--accent);border-color:color-mix(in srgb, var(--accent) 35%, transparent)}.ip-output-tab.active{color:var(--fg);background:color-mix(in srgb, var(--code-bg) 58%, transparent);border-color:var(--rule)}.ip-output-tab.has-activity:after{content:"";width:6px;height:6px;box-shadow:0 0 0 2px color-mix(in srgb, var(--panel-bg) 88%, transparent);background:#3a8c5b;border-radius:999px;position:absolute;top:4px;right:4px}.ip-history{min-height:0;font-family:var(--font-code);font-size:var(--code-ui-size);line-height:var(--code-line-height);scrollbar-gutter:stable both-edges;flex:1 1 0;padding:10px 14px;overflow:auto}.ip-history[hidden]{display:none}.ip-history-jump{z-index:1;border:1px solid var(--rule);background:color-mix(in srgb, var(--panel-bg) 88%, transparent);color:var(--fg-dim);cursor:pointer;border-radius:999px;margin-left:auto;padding:2px 8px;font-family:-apple-system,system-ui,sans-serif;font-size:11px;line-height:1.5;display:block;position:sticky;box-shadow:0 2px 8px #00000014}.ip-history-jump:hover{border-color:var(--accent);color:var(--accent)}.ip-history-jump[hidden]{display:none}.ip-history-jump-top{margin-bottom:4px;top:2px}.ip-history-jump-bottom{margin-top:4px;bottom:2px}.ip-history-empty{padding:4px 0;font-family:-apple-system,system-ui,sans-serif;font-size:12.5px;font-style:italic}.ip-snap{border-radius:3px;grid-template-columns:24px 1fr;gap:6px;padding:3px 0;display:grid}.ip-snap>.step{color:var(--fg-dim);text-align:right;-webkit-user-select:none;user-select:none;padding-top:3px;font-size:10.5px}.ip-snap>.body{min-width:0}.ip-snap>.body>pre{white-space:pre-wrap;overflow-wrap:normal;word-break:normal;-webkit-hyphens:none;hyphens:none;font:inherit;color:var(--fg);background:0 0;border:0;margin:0;padding:0}.ip-snap>.body>.hint{color:var(--fg-dim);font-family:-apple-system,system-ui,sans-serif;font-size:11.5px;font-style:italic}.ip-snap.note{background:0 0}.ip-snap.note>.body>.hint:before{content:"— ";opacity:.6}.ip-snap.frame-enter>.body{position:relative}.ip-snap.frame-enter>.body:before{content:"→";left:calc(var(--indent,0px) - 14px);text-align:center;width:14px;color:var(--accent);pointer-events:none;font-weight:700;position:absolute;top:0}.ip-snap.iter>.body{position:relative}.ip-snap.iter>.body:before{content:"↻";left:calc(var(--indent,0px) - 14px);text-align:center;width:14px;color:var(--fg-dim);pointer-events:none;position:absolute;top:0}.ip-snap.queued{opacity:.7}.ip-snap.current{background:color-mix(in srgb, var(--accent) 8%, transparent)}.ip-snap.final{background:#3a8c5b1a}.ip-snap.final>.body>pre{color:var(--tok-output);font-style:italic}.ip-snap.final>.body>pre:before{content:"↪ ";opacity:.72;font-family:var(--font-body)}.ip-snap.final>.body>pre .sx.folded{color:inherit;background:0 0;border-bottom:0}.ip-history .sx{cursor:default;border-radius:2px;padding:0}.ip-history .sx:hover:not(.folded){background:color-mix(in srgb, var(--accent) 16%, transparent);outline:1px dotted color-mix(in srgb, var(--accent) 40%, transparent)}.ip-history .sx.cur{outline:1px solid var(--accent)}.ip-history .sx.bp{box-shadow:inset 0 -2px #c54040}.ip-history .sx.sub{background:#4a5fbf2e;border-bottom:1px solid #4a5fbf80}.ip-history .sx.folded{background:#3a8c5b24;border-bottom:1px solid #3a8c5b80}.ip-history .sx.c0{background:#ff787847;border-bottom:1px solid #ff787899}.ip-history .sx.c1{background:#ffb45047;border-bottom:1px solid #ffb45099}.ip-history .sx.c2{background:#d4c43c4d;border-bottom:1px solid #d4c43c99}.ip-history .sx.c3{background:#78d27847;border-bottom:1px solid #78d27899}.ip-history .sx.c4{background:#78b4ff47;border-bottom:1px solid #78b4ff99}.ip-history .sx.c5{background:#c88cff47;border-bottom:1px solid #c88cff99}.ip-history .sx.linked{outline:2px solid color-mix(in srgb, var(--accent) 80%, transparent);box-shadow:0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent)}.ip-marks-pane{flex:1 1 0;min-height:0;padding:12px 14px;font-family:-apple-system,system-ui,sans-serif;overflow:auto}.ip-marks-pane[hidden]{display:none}.ip-mark-toolbar{grid-template-columns:minmax(96px,auto) minmax(84px,auto) minmax(96px,1fr) auto minmax(96px,auto);align-items:center;gap:6px;margin-bottom:10px;display:grid}.ip-mark-kind-field{align-items:center;gap:5px;min-width:0;display:inline-flex;position:relative}.ip-mark-toolbar select,.ip-mark-toolbar input,.ip-mark-toolbar button:not(.ip-help-tip){font:inherit;border:1px solid var(--rule);background:color-mix(in srgb, var(--panel-bg) 88%, var(--code-bg));min-width:0;color:var(--fg);border-radius:4px;padding:4px 7px;font-size:12px}.ip-mark-toolbar input{font-family:var(--font-code);background:color-mix(in srgb, var(--code-bg) 55%, transparent)}.ip-mark-toolbar button:not(.ip-help-tip){cursor:pointer}.ip-mark-toolbar button:not(.ip-help-tip):hover{color:var(--accent);border-color:var(--accent)}.ip-mark-kind-field .ip-tooltip{width:min(285px,100vw - 40px);top:calc(100% + 8px);left:0;right:auto}.ip-mark-kind-field .ip-tooltip:after{left:74px}.ip-mark-trace-mode{color:var(--fg-dim);justify-content:flex-end;align-items:center;gap:5px;font-size:11.5px;display:inline-flex}.ip-marks-list{gap:5px;display:grid}.ip-marks-empty{padding:6px 0;font-size:12.5px;font-style:italic}.ip-mark-row{border:1px solid var(--rule);background:color-mix(in srgb, var(--code-bg) 35%, transparent);border-left-width:3px;border-radius:6px;grid-template-columns:24px 78px minmax(96px,1fr) minmax(80px,1fr) 56px 24px;align-items:center;gap:6px;min-height:34px;padding:5px 6px;display:grid}.ip-mark-row.is-break{border-left-color:#c54040}.ip-mark-row.is-watch{border-left-color:#4f7fcf}.ip-mark-row.is-tap{border-left-color:#3a8c5b}.ip-mark-row.is-disabled{opacity:.55}.ip-mark-enable,.ip-mark-delete{color:var(--fg-dim);cursor:pointer;background:0 0;border:0;padding:0}.ip-mark-enable:hover,.ip-mark-delete:hover{color:var(--accent)}.ip-mark-row.is-break .ip-mark-enable{color:#c54040}.ip-mark-row.is-watch .ip-mark-enable{color:#4f7fcf}.ip-mark-row.is-tap .ip-mark-enable{color:#3a8c5b}.ip-mark-kind-select{font:inherit;border:1px solid var(--rule);background:color-mix(in srgb, var(--panel-bg) 88%, var(--code-bg));color:var(--fg);border-radius:4px;padding:2px 4px;font-size:11.5px}.ip-mark-target-cell{gap:1px;min-width:0;display:grid}.ip-mark-target-label{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-family:var(--font-code);font-size:12px;overflow:hidden}.ip-mark-meta,.ip-mark-hits{font-variant-numeric:tabular-nums;font-size:10.5px}.ip-mark-value{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-family:var(--font-code);font-size:12px;overflow:hidden}@media (width<=480px){.ip-mark-toolbar{grid-template-columns:1fr 1fr}.ip-mark-toolbar input,.ip-mark-trace-mode{grid-column:1/-1}.ip-mark-row{grid-template-columns:22px minmax(78px,1fr) 24px}.ip-mark-kind-select,.ip-mark-value,.ip-mark-hits{display:none}}.ip-snap.painter-output>.painter-canvas,.ip-canvas-pane .painter-canvas{border:1px solid color-mix(in srgb, var(--fg) 20%, transparent);border-radius:2px;width:300px;max-width:none;height:300px;margin:6px 0 2px;display:block}.ip-snap.painter-output{background:0 0;padding:4px 8px;display:block}.ip-canvas-pane{flex:1 1 0;min-height:0;padding:14px;overflow:auto}.ip-canvas-pane[hidden]{display:none}.ip-canvas-pane .painter-canvas{color:#383838;background:linear-gradient(#ffffffb3,#f4f6fae0),#fafbfc;margin:0 auto}.ip-canvas-empty{place-items:center;gap:10px;min-height:100%;font-family:-apple-system,system-ui,sans-serif;font-size:12.5px;font-style:italic;display:grid}.ip-canvas-empty .painter-canvas{opacity:.58}.ip-canvas-hint{color:var(--fg-dim);text-align:center;font-family:-apple-system,system-ui,sans-serif;font-size:12.5px;font-style:italic}sicp-painter{margin:8px 0;display:block}sicp-painter .painter-error{color:var(--error,#c0392b);font-family:monospace;font-size:12px}.ip-status[data-kind=run]{color:var(--accent)}.ip-status[data-kind=err]{color:#c54040}#interp-toggle{border:1px solid var(--rule);color:var(--fg);cursor:pointer;width:34px;height:34px;font-family:var(--font-body);background:0 0;border-radius:999px;place-items:center;font-size:18px;font-style:italic;line-height:1;display:grid}#interp-toggle:hover{border-color:var(--accent);color:var(--accent)}body[data-panel=open] #interp-toggle{background:color-mix(in srgb, var(--accent) 14%, transparent);border-color:var(--accent);color:var(--accent)}@media (width<=700px){.topbar{gap:8px;padding-inline:12px}.topbar .title{flex:auto;gap:8px;overflow:hidden}.topbar .controls{flex:none;gap:8px}#progress{text-align:right;min-width:3.8em;font-size:12px;line-height:1.2}}@media (width<=430px){.topbar{padding-inline:8px}.topbar .controls{gap:6px}#settings-toggle,#toc-toggle,#help-toggle,#interp-toggle{width:32px;height:32px}#help-toggle{font-size:14px}#interp-toggle{font-size:17px}#progress{min-width:3.3em}}@media (width<=370px){#progress{display:none}}@media (width<=720px){#interp-panel{width:100%;height:100dvh;max-height:none;box-shadow:none;z-index:1000;border:0;position:fixed;inset:0;transform:translateY(100%)}body[data-panel=open] #interp-panel{transform:translateY(0)}body[data-panel=open][data-panel-min=min] #interp-panel{pointer-events:none;transform:translateY(100%)}#interp-panel .ip-loaded{height:var(--loaded-h,auto);max-height:40vh}#interp-panel .ip-head{cursor:default}#interp-panel .ip-head:before{content:none}.ip-panel-resize,.ip-loaded-resize{display:none}.ip-minimize{align-items:center;display:inline-flex}.page-nav,.toast,body[data-panel=open] .page-nav,body[data-panel=open] .toast,:root[data-panel=open] .page-nav,:root[data-panel=open] .toast{right:24px;bottom:calc(env(safe-area-inset-bottom,0px) + 20px)}.ip-pill{left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 92px);z-index:1001;border:1px solid var(--rule);background:var(--panel-bg);max-width:min(70vw,320px);color:var(--fg);box-shadow:var(--panel-shadow);cursor:pointer;border-radius:999px;align-items:center;gap:8px;padding:9px 16px;font-family:-apple-system,system-ui,sans-serif;font-size:13px;display:inline-flex;position:fixed;transform:translate(-50%)}.ip-pill[hidden]{display:none}.ip-pill-lambda{color:var(--accent);font-family:var(--font-body);flex:none;font-size:1.25em;font-style:italic;line-height:1}.ip-pill-status{text-overflow:ellipsis;white-space:nowrap;color:var(--fg-dim);overflow:hidden}.m-sheet{border:0;border-top:1px solid var(--rule);z-index:60;padding-top:8px;padding-bottom:calc(env(safe-area-inset-bottom,0px) + 12px);border-radius:16px 16px 0 0;flex-direction:column;transition:height .2s;display:flex;overflow:hidden;box-shadow:0 -8px 30px #0000004d;width:auto!important;max-width:none!important;margin:0!important;position:fixed!important;inset:auto 0 0!important}.m-sheet[data-state=peek]{height:42vh}.m-sheet[data-state=full]{height:92dvh}.m-sheet[hidden]{display:none!important}.m-sheet>:not(.m-sheet-handle){-webkit-overflow-scrolling:touch;overflow-y:auto}.m-sheet-handle{cursor:grab;touch-action:none;background:0 0;border:0;flex:none;justify-content:center;align-self:stretch;align-items:center;padding:6px 0 10px;display:flex}.m-sheet-grip{background:var(--rule);border-radius:2px;width:40px;height:4px;display:block}.m-sheet-backdrop{z-index:55;opacity:0;pointer-events:none;background:#0006;transition:opacity .18s;position:fixed;inset:0}.m-sheet-backdrop.show{opacity:1;pointer-events:auto}#side-panel.m-sheet{padding-left:22px;padding-right:22px}#side-panel.m-sheet #side-body{flex:auto}#sidebar{width:100vw;max-width:100%}.topbar .title{min-width:0}.breadcrumb{text-overflow:ellipsis;white-space:nowrap;flex:auto;min-width:0;overflow:hidden}#settings-toggle,#toc-toggle,#help-toggle,#interp-toggle{min-width:40px;min-height:40px}#settings-menu{width:min(296px,100vw - 16px);max-width:calc(100vw - 16px);max-height:calc(100dvh - var(--topbar-h,58px) - 16px);right:0;overflow-y:auto}main{margin-bottom:120px}.display-math{overflow-x:auto}}@media (width<=480px){#progress{display:none}.exercise,.checkpoint{padding:14px 16px}}[data-skin=sarabander]{--sb-ui-font:"Linux Biolinum O", "Linux Biolinum", "Source Sans 3", system-ui, sans-serif;--sb-paper:color-mix(in srgb, var(--panel-bg) 88%, var(--code-bg));--sb-paper-raised:color-mix(in srgb, var(--panel-bg) 96%, var(--code-bg));--sb-paper-wash:color-mix(in srgb, var(--accent) 7%, var(--panel-bg));--sb-ink-muted:color-mix(in srgb, var(--fg-dim) 82%, var(--fg));--sb-rule:color-mix(in srgb, var(--rule) 82%, var(--accent));--sb-focus:color-mix(in srgb, var(--accent) 36%, transparent);--sb-radius:5px;--sb-control-radius:3px;--sb-lift:3px 3px 16px #232b4a1f}@media (prefers-color-scheme:dark){[data-skin=sarabander]:not([data-mode=light]){--sb-paper:color-mix(in srgb, var(--panel-bg) 88%, var(--code-bg));--sb-paper-raised:color-mix(in srgb, var(--panel-bg) 92%, #242832);--sb-paper-wash:color-mix(in srgb, var(--accent) 10%, var(--panel-bg));--sb-rule:color-mix(in srgb, var(--rule) 76%, var(--accent));--sb-lift:3px 3px 18px #00000073}}[data-skin=sarabander][data-mode=dark]{--sb-paper:color-mix(in srgb, var(--panel-bg) 88%, var(--code-bg));--sb-paper-raised:color-mix(in srgb, var(--panel-bg) 92%, #242832);--sb-paper-wash:color-mix(in srgb, var(--accent) 10%, var(--panel-bg));--sb-rule:color-mix(in srgb, var(--rule) 76%, var(--accent));--sb-lift:3px 3px 18px #00000073}[data-skin=sarabander] .topbar,[data-skin=sarabander] #settings-menu,[data-skin=sarabander] #sidebar,[data-skin=sarabander] #interp-panel,[data-skin=sarabander] .toast{font-family:var(--sb-ui-font);background:var(--sb-paper);border-color:var(--sb-rule)}[data-skin=sarabander] .topbar{background:color-mix(in srgb, var(--bg) 88%, var(--sb-paper))}[data-skin=sarabander] #settings-menu,[data-skin=sarabander] #ip-settings-menu,[data-skin=sarabander] #sidebar,[data-skin=sarabander] .toast{box-shadow:var(--sb-lift)}[data-skin=sarabander] #settings-toggle,[data-skin=sarabander] #toc-toggle,[data-skin=sarabander] #help-toggle,[data-skin=sarabander] #interp-toggle,[data-skin=sarabander] .breadcrumb .bc-nav,[data-skin=sarabander] #settings-menu select,[data-skin=sarabander] #ip-settings-menu select,[data-skin=sarabander] #set-skin,[data-skin=sarabander] .settings-action-button,[data-skin=sarabander] .mode-group .mode-btn,[data-skin=sarabander] .sb-tab,[data-skin=sarabander] .ip-output-tab,[data-skin=sarabander] #sb-close,[data-skin=sarabander] .ip-close,[data-skin=sarabander] .ip-scratch-scope,[data-skin=sarabander] .ip-controls button,[data-skin=sarabander] .ip-history-jump,[data-skin=sarabander] .checkpoint .cp-options button,[data-skin=sarabander] .checkpoint .cp-btn-reveal,[data-skin=sarabander] .checkpoint .cp-btn-run,[data-skin=sarabander] .checkpoint .cp-btn-reset,[data-skin=sarabander] .exercise .ex-btn,[data-skin=sarabander] .exercise .exercise-open{font-family:var(--sb-ui-font);border-color:var(--sb-rule);border-radius:var(--sb-control-radius)}[data-skin=sarabander] #settings-toggle,[data-skin=sarabander] #toc-toggle,[data-skin=sarabander] #help-toggle,[data-skin=sarabander] #interp-toggle,[data-skin=sarabander] #prev-fab,[data-skin=sarabander] #fwd-fab{border-radius:999px}[data-skin=sarabander] #settings-toggle:hover,[data-skin=sarabander] #toc-toggle:hover,[data-skin=sarabander] #help-toggle:hover,[data-skin=sarabander] #interp-toggle:hover,[data-skin=sarabander] .breadcrumb .bc-nav:hover,[data-skin=sarabander] .settings-action-button:hover:not(:disabled),[data-skin=sarabander] .settings-action-button[aria-pressed=true],[data-skin=sarabander] .mode-group .mode-btn[aria-checked=true],[data-skin=sarabander] .sb-tab.active,[data-skin=sarabander] .ip-output-tab.active,[data-skin=sarabander] .ip-scratch-scope:hover,[data-skin=sarabander] .ip-controls button:hover:not([disabled]),[data-skin=sarabander] .ip-output-tab:hover,[data-skin=sarabander] .ip-history-jump:hover,[data-skin=sarabander] .checkpoint .cp-options button:hover,[data-skin=sarabander] .checkpoint .cp-btn-run:hover,[data-skin=sarabander] .checkpoint .cp-btn-reset:hover,[data-skin=sarabander] .exercise .ex-btn:hover,[data-skin=sarabander] .exercise .exercise-open:hover{background:var(--sb-paper-wash);border-color:var(--accent);color:var(--accent)}[data-skin=sarabander] .inline-cm-host,[data-skin=sarabander] #ip-loaded-body pre.code,[data-skin=sarabander] .checkpoint .cp-starter,[data-skin=sarabander] .checkpoint .cp-editor,[data-skin=sarabander] .ex-predict-input,[data-skin=sarabander] .ip-inputs input[type=text]{background:var(--sb-paper);border-color:var(--sb-rule);border-radius:var(--sb-radius)}[data-skin=sarabander] pre.code.interp-target.is-armed,[data-skin=sarabander] .inline-cm-host.is-armed,[data-skin=sarabander] .ex-predict-input:focus,[data-skin=sarabander] .ip-inputs input[type=text]:focus,[data-skin=sarabander] .sb-search-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 1px var(--sb-focus)}[data-skin=sarabander] #reader .checkpoint,[data-skin=sarabander] #reader .exercise,[data-skin=sarabander] sicp-painter{background:var(--sb-paper-raised);border-color:var(--sb-rule);border-radius:var(--sb-radius);box-shadow:var(--sb-lift)}@media (prefers-color-scheme:dark){[data-skin=sarabander]:not([data-mode=light]) sicp-painter{color:#303642;background:#f3f5f9;border-color:#aeb2bb}}[data-skin=sarabander][data-mode=dark] sicp-painter{color:#303642;background:#f3f5f9;border-color:#aeb2bb}[data-skin=sarabander] #reader .checkpoint .label,[data-skin=sarabander] #reader .exercise .label,[data-skin=sarabander] .set-label,[data-skin=sarabander] .set-section,[data-skin=sarabander] .ip-title,[data-skin=sarabander] .ip-controls .ip-status,[data-skin=sarabander] .ip-controls .ip-speed-label,[data-skin=sarabander] .ip-history-empty,[data-skin=sarabander] .ip-canvas-empty,[data-skin=sarabander] .ip-canvas-hint,[data-skin=sarabander] .ip-snap>.body>.hint,[data-skin=sarabander] .toast{font-family:var(--sb-ui-font)}[data-skin=sarabander] #reader .checkpoint .label,[data-skin=sarabander] #reader .exercise .label,[data-skin=sarabander] .set-label,[data-skin=sarabander] .set-section{color:var(--sb-ink-muted);letter-spacing:.06em}[data-skin=sarabander] .checkpoint .cp-options button,[data-skin=sarabander] .checkpoint .cp-btn-reveal,[data-skin=sarabander] .checkpoint .cp-btn-run,[data-skin=sarabander] .checkpoint .cp-btn-reset,[data-skin=sarabander] .exercise .ex-btn,[data-skin=sarabander] .ip-controls button,[data-skin=sarabander] .ip-history-jump,[data-skin=sarabander] #prev-fab,[data-skin=sarabander] #fwd-fab{background:var(--sb-paper-raised)}[data-skin=sarabander] .checkpoint .cp-btn-run,[data-skin=sarabander] .exercise .ex-btn-run{border-color:var(--accent);color:var(--accent);font-weight:600}[data-skin=sarabander] #next-fab{font-family:var(--sb-ui-font);background:var(--accent);box-shadow:3px 3px 18px color-mix(in srgb, var(--accent) 36%, transparent);border-radius:999px}[data-skin=sarabander] #prev-fab,[data-skin=sarabander] #fwd-fab{box-shadow:var(--sb-lift)}[data-skin=sarabander] .ip-loaded,[data-skin=sarabander] .ip-controls,[data-skin=sarabander] .ip-inputs,[data-skin=sarabander] .ip-output-tabs,[data-skin=sarabander] .sb-controls,[data-skin=sarabander] .defs-controls,[data-skin=sarabander] .sb-head,[data-skin=sarabander] .ip-head{border-color:var(--sb-rule)}[data-skin=sarabander] .ip-loaded,[data-skin=sarabander] .ip-controls,[data-skin=sarabander] .ip-output-tabs{background:color-mix(in srgb, var(--sb-paper) 82%, var(--panel-bg))}[data-skin=sarabander] .ip-loaded-resize{background:var(--sb-rule);border-color:var(--sb-rule)}