diff --git a/_extensions/live/resources/live-runtime.css b/_extensions/live/resources/live-runtime.css
index 8086a85..1ddfc5c 100644
--- a/_extensions/live/resources/live-runtime.css
+++ b/_extensions/live/resources/live-runtime.css
@@ -1 +1 @@
-.quarto-light{--exercise-main-color: var(--bs-body-color, var(--r-main-color, #212529));--exercise-main-bg: var(--bs-body-bg, var(--r-background-color, #ffffff));--exercise-primary-rgb: var(--bs-primary-rgb, 13, 110, 253);--exercise-gray: var(--bs-gray-300, #dee2e6);--exercise-cap-bg: var(--bs-light-bg-subtle, #f8f8f8);--exercise-line-bg: rgba(var(--exercise-primary-rgb), .05);--exercise-line-gutter-bg: rgba(var(--exercise-primary-rgb), .1)}.quarto-dark{--exercise-main-color: var(--bs-body-color, var(--r-main-color, #ffffff));--exercise-main-bg: var(--bs-body-bg, var(--r-background-color, #222222));--exercise-primary-rgb: var(--bs-primary-rgb, 55, 90, 127);--exercise-gray: var(--bs-gray-700, #434343);--exercise-cap-bg: var(--bs-card-cap-bg, #505050);--exercise-line-bg: rgba(var(--exercise-primary-rgb), .2);--exercise-line-gutter-bg: rgba(var(--exercise-primary-rgb), .4)}.webr-ojs-exercise.exercise-solution,.webr-ojs-exercise.exercise-hint{border:var(--exercise-gray) 1px solid;border-radius:5px;padding:1rem}.exercise-hint .exercise-hint,.exercise-solution .exercise-solution{border:none;padding:0}.webr-ojs-exercise.exercise-solution>.callout,.webr-ojs-exercise.exercise-hint>.callout{margin:-1rem;border:0}#exercise-loading-indicator{position:fixed;bottom:0;right:0;font-size:1.2rem;padding:.2rem .75rem;border:1px solid var(--exercise-gray);background-color:var(--exercise-cap-bg);border-top-left-radius:5px}#exercise-loading-indicator>.spinner-grow{min-width:1rem}.exercise-loading-details+.exercise-loading-details:before{content:"/ "}@media only screen and (max-width: 576px){#exercise-loading-indicator{font-size:.8rem;padding:.1rem .5rem}#exercise-loading-indicator>.spinner-grow{min-width:.66rem}#exercise-loading-indicator .gap-2{gap:.2rem!important}#exercise-loading-indicator .spinner-grow{--bs-spinner-width: .66rem;--bs-spinner-height: .66rem}}.btn.btn-exercise-editor:disabled,.btn.btn-exercise-editor.disabled,.btn-exercise-editor fieldset:disabled .btn{transition:opacity .5s}.card.exercise-editor .card-header a.btn{--bs-btn-padding-x: .5rem;--bs-btn-padding-y: .15rem;--bs-btn-font-size: .75rem}.quarto-dark .card.exercise-editor .card-header .btn.btn-outline-dark{--bs-btn-color: #f8f8f8;--bs-btn-border-color: #f8f8f8;--bs-btn-hover-color: #000;--bs-btn-hover-bg: #f8f8f8;--bs-btn-hover-border-color: #f8f8f8;--bs-btn-focus-shadow-rgb: 248, 248, 248;--bs-btn-active-color: #000;--bs-btn-active-bg: #f8f8f8;--bs-btn-active-border-color: #f8f8f8;--bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);--bs-btn-disabled-color: #f8f8f8;--bs-btn-disabled-bg: transparent;--bs-btn-disabled-border-color: #f8f8f8;--bs-btn-bg: transparent;--bs-gradient: none}.card.exercise-editor{--exercise-min-lines: 0;--exercise-max-lines: infinity;--exercise-font-size: var(--bs-body-font-size, 1rem)}.card.exercise-editor .card-header{padding:.5rem 1rem;background-color:var(--exercise-cap-bg);border-bottom:1px solid rgba(0,0,0,.175)}.card.exercise-editor .cm-editor{color:var(--exercise-main-color);background-color:var(--exercise-main-bg);max-height:calc(var(--exercise-max-lines) * 1.4 * var(--exercise-font-size) + 8px)}.card.exercise-editor .cm-content{caret-color:var(--exercise-main-color)}.card.exercise-editor .cm-cursor,.card.exercise-editor .cm-dropCursor{border-left-color:var(--exercise-main-color)}.card.exercise-editor .cm-focused .cm-selectionBackgroundm .cm-selectionBackground,.card.exercise-editor .cm-content ::selection{background-color:rgba(var(--exercise-primary-rgb),.1)}.card.exercise-editor .cm-activeLine{background-color:var(--exercise-line-bg)}.card.exercise-editor .cm-activeLineGutter{background-color:var(--exercise-line-gutter-bg)}.card.exercise-editor .cm-gutters{background-color:var(--exercise-cap-bg);color:var(--exercise-main-color);border-right:1px solid var(--exercise-gray)}.card.exercise-editor .cm-content,.card.exercise-editor .cm-gutter{min-height:calc(var(--exercise-min-lines) * 1.4 * var(--exercise-font-size) + 8px)}.card.exercise-editor .cm-scroller{line-height:1.4;overflow:auto}:root{--exercise-editor-hl-al: var(--quarto-hl-al-color, #AD0000);--exercise-editor-hl-an: var(--quarto-hl-an-color, #5E5E5E);--exercise-editor-hl-at: var(--quarto-hl-at-color, #657422);--exercise-editor-hl-bn: var(--quarto-hl-bn-color, #AD0000);--exercise-editor-hl-ch: var(--quarto-hl-ch-color, #20794D);--exercise-editor-hl-co: var(--quarto-hl-co-color, #5E5E5E);--exercise-editor-hl-cv: var(--quarto-hl-cv-color, #5E5E5E);--exercise-editor-hl-cn: var(--quarto-hl-cn-color, #8f5902);--exercise-editor-hl-cf: var(--quarto-hl-cf-color, #003B4F);--exercise-editor-hl-dt: var(--quarto-hl-dt-color, #AD0000);--exercise-editor-hl-dv: var(--quarto-hl-dv-color, #AD0000);--exercise-editor-hl-do: var(--quarto-hl-do-color, #5E5E5E);--exercise-editor-hl-er: var(--quarto-hl-er-color, #AD0000);--exercise-editor-hl-fl: var(--quarto-hl-fl-color, #AD0000);--exercise-editor-hl-fu: var(--quarto-hl-fu-color, #4758AB);--exercise-editor-hl-im: var(--quarto-hl-im-color, #00769E);--exercise-editor-hl-in: var(--quarto-hl-in-color, #5E5E5E);--exercise-editor-hl-kw: var(--quarto-hl-kw-color, #003B4F);--exercise-editor-hl-op: var(--quarto-hl-op-color, #5E5E5E);--exercise-editor-hl-ot: var(--quarto-hl-ot-color, #003B4F);--exercise-editor-hl-pp: var(--quarto-hl-pp-color, #AD0000);--exercise-editor-hl-sc: var(--quarto-hl-sc-color, #5E5E5E);--exercise-editor-hl-ss: var(--quarto-hl-ss-color, #20794D);--exercise-editor-hl-st: var(--quarto-hl-st-color, #20794D);--exercise-editor-hl-va: var(--quarto-hl-va-color, #111111);--exercise-editor-hl-vs: var(--quarto-hl-vs-color, #20794D);--exercise-editor-hl-wa: var(--quarto-hl-wa-color, #5E5E5E)}*[data-bs-theme=dark]{--exercise-editor-hl-al: var(--quarto-hl-al-color, #f07178);--exercise-editor-hl-an: var(--quarto-hl-an-color, #d4d0ab);--exercise-editor-hl-at: var(--quarto-hl-at-color, #00e0e0);--exercise-editor-hl-bn: var(--quarto-hl-bn-color, #d4d0ab);--exercise-editor-hl-bu: var(--quarto-hl-bu-color, #abe338);--exercise-editor-hl-ch: var(--quarto-hl-ch-color, #abe338);--exercise-editor-hl-co: var(--quarto-hl-co-color, #f8f8f2);--exercise-editor-hl-cv: var(--quarto-hl-cv-color, #ffd700);--exercise-editor-hl-cn: var(--quarto-hl-cn-color, #ffd700);--exercise-editor-hl-cf: var(--quarto-hl-cf-color, #ffa07a);--exercise-editor-hl-dt: var(--quarto-hl-dt-color, #ffa07a);--exercise-editor-hl-dv: var(--quarto-hl-dv-color, #d4d0ab);--exercise-editor-hl-do: var(--quarto-hl-do-color, #f8f8f2);--exercise-editor-hl-er: var(--quarto-hl-er-color, #f07178);--exercise-editor-hl-ex: var(--quarto-hl-ex-color, #00e0e0);--exercise-editor-hl-fl: var(--quarto-hl-fl-color, #d4d0ab);--exercise-editor-hl-fu: var(--quarto-hl-fu-color, #ffa07a);--exercise-editor-hl-im: var(--quarto-hl-im-color, #abe338);--exercise-editor-hl-in: var(--quarto-hl-in-color, #d4d0ab);--exercise-editor-hl-kw: var(--quarto-hl-kw-color, #ffa07a);--exercise-editor-hl-op: var(--quarto-hl-op-color, #ffa07a);--exercise-editor-hl-ot: var(--quarto-hl-ot-color, #00e0e0);--exercise-editor-hl-pp: var(--quarto-hl-pp-color, #dcc6e0);--exercise-editor-hl-re: var(--quarto-hl-re-color, #00e0e0);--exercise-editor-hl-sc: var(--quarto-hl-sc-color, #abe338);--exercise-editor-hl-ss: var(--quarto-hl-ss-color, #abe338);--exercise-editor-hl-st: var(--quarto-hl-st-color, #abe338);--exercise-editor-hl-va: var(--quarto-hl-va-color, #00e0e0);--exercise-editor-hl-vs: var(--quarto-hl-vs-color, #abe338);--exercise-editor-hl-wa: var(--quarto-hl-wa-color, #dcc6e0)}pre>code.sourceCode span.tok-keyword,.exercise-editor-body>.cm-editor span.tok-keyword{color:var(--exercise-editor-hl-kw)}pre>code.sourceCode span.tok-operator,.exercise-editor-body>.cm-editor span.tok-operator{color:var(--exercise-editor-hl-op)}pre>code.sourceCode span.tok-definitionOperator,.exercise-editor-body>.cm-editor span.tok-definitionOperator{color:var(--exercise-editor-hl-ot)}pre>code.sourceCode span.tok-compareOperator,.exercise-editor-body>.cm-editor span.tok-compareOperator{color:var(--exercise-editor-hl-ot)}pre>code.sourceCode span.tok-attributeName,.exercise-editor-body>.cm-editor span.tok-attributeName{color:var(--exercise-editor-hl-at)}pre>code.sourceCode span.tok-controlKeyword,.exercise-editor-body>.cm-editor span.tok-controlKeyword{color:var(--exercise-editor-hl-cf)}pre>code.sourceCode span.tok-comment,.exercise-editor-body>.cm-editor span.tok-comment{color:var(--exercise-editor-hl-co)}pre>code.sourceCode span.tok-string,.exercise-editor-body>.cm-editor span.tok-string{color:var(--exercise-editor-hl-st)}pre>code.sourceCode span.tok-string2,.exercise-editor-body>.cm-editor span.tok-string2{color:var(--exercise-editor-hl-ss)}pre>code.sourceCode span.tok-variableName,.exercise-editor-body>.cm-editor span.tok-variableName{color:var(--exercise-editor-hl-va)}pre>code.sourceCode span.tok-bool,pre>code.sourceCode span.tok-literal,pre>code.sourceCode span.tok-separator,.exercise-editor-body>.cm-editor span.tok-bool,.exercise-editor-body>.cm-editor span.tok-literal,.exercise-editor-body>.cm-editor span.tok-separator{color:var(--exercise-editor-hl-cn)}pre>code.sourceCode span.tok-bool,pre>code.sourceCode span.tok-literal,.exercise-editor-body>.cm-editor span.tok-bool,.exercise-editor-body>.cm-editor span.tok-literal{color:var(--exercise-editor-hl-cn)}pre>code.sourceCode span.tok-number,pre>code.sourceCode span.tok-integer,.exercise-editor-body>.cm-editor span.tok-number,.exercise-editor-body>.cm-editor span.tok-integer{color:var(--exercise-editor-hl-dv)}pre>code.sourceCode span.tok-function-variableName,.exercise-editor-body>.cm-editor span.tok-function-variableName{color:var(--exercise-editor-hl-fu)}pre>code.sourceCode span.tok-function-attributeName,.exercise-editor-body>.cm-editor span.tok-function-attributeName{color:var(--exercise-editor-hl-at)}div.exercise-cell-output.cell-output-stdout pre code,div.exercise-cell-output.cell-output-stderr pre code{white-space:pre-wrap;word-wrap:break-word}div.exercise-cell-output.cell-output-stderr pre code{color:var(--exercise-editor-hl-er, #AD0000)}div.cell-output-pyodide table{border:none;margin:0 auto 1em}div.cell-output-pyodide thead{border-bottom:1px solid var(--exercise-main-color)}div.cell-output-pyodide td,div.cell-output-pyodide th,div.cell-output-pyodide tr{padding:.5em;line-height:normal}div.cell-output-pyodide th{font-weight:700}div.cell-output-display canvas{background-color:#fff}.tab-pane>.exercise-tab-pane-header+div.webr-ojs-exercise{margin-top:1em}.alert .exercise-feedback p:last-child{margin-bottom:0}.alert.exercise-grade{animation-duration:.25s;animation-name:exercise-grade-slidein}@keyframes exercise-grade-slidein{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}.alert.exercise-grade p:last-child{margin-bottom:0}.alert.exercise-grade pre{white-space:pre-wrap;color:inherit}.observablehq pre>code.sourceCode{white-space:pre;position:relative}.observablehq div.sourceCode{margin:1em 0!important}.observablehq pre.sourceCode{margin:0!important}@media screen{.observablehq div.sourceCode{overflow:auto}}@media print{.observablehq pre>code.sourceCode{white-space:pre-wrap}.observablehq pre>code.sourceCode>span{text-indent:-5em;padding-left:5em}}.reveal .d-none{display:none!important}.reveal .d-flex{display:flex!important}.reveal .card.exercise-editor .justify-content-between{justify-content:space-between!important}.reveal .card.exercise-editor .align-items-center{align-items:center!important}.reveal .card.exercise-editor .gap-1{gap:.25rem!important}.reveal .card.exercise-editor .gap-2{gap:.5rem!important}.reveal .card.exercise-editor .gap-3{gap:.75rem!important}.reveal .card.exercise-editor{--exercise-font-size: 1.3rem;margin:1rem 0;border:1px solid rgba(0,0,0,.175);border-radius:.375rem;font-size:var(--exercise-font-size);overflow:hidden}.reveal .card.exercise-editor .card-header{padding:.5rem 1rem;background-color:var(--exercise-cap-bg);border-bottom:1px solid rgba(0,0,0,.175)}.reveal .cell-output-webr.cell-output-display,.reveal .cell-output-pyodide.cell-output-display{text-align:center}.quarto-light .reveal .btn.btn-exercise-editor.btn-primary{--exercise-btn-bg: var(--bs-btn-bg, #0d6efd);--exercise-btn-color: var(--bs-btn-color, #ffffff);--exercise-btn-border-color: var(--bs-btn-border-color, #0d6efd);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #0b5ed7);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #0b5ed7);--exercise-btn-hover-color: var(--bs-btn-hover-color, #ffffff)}.quarto-dark .reveal .btn.btn-exercise-editor.btn-primary{--exercise-btn-bg: var(--bs-btn-bg, #375a7f);--exercise-btn-color: var(--bs-btn-color, #ffffff);--exercise-btn-border-color: var(--bs-btn-border-color, #375a7f);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #2c4866);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #2c4866);--exercise-btn-hover-color: var(--bs-btn-hover-color, #ffffff)}.quarto-light .reveal .btn.btn-exercise-editor.btn-outline-dark{--exercise-btn-bg: var(--bs-btn-bg, transparent);--exercise-btn-color: var(--bs-btn-color, #333);--exercise-btn-border-color: var(--bs-btn-border-color, #333);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #333);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #333);--exercise-btn-hover-color: var(--bs-btn-hover-color, #ffffff)}.quarto-dark .reveal .btn.btn-exercise-editor.btn-outline-dark{--exercise-btn-bg: var(--bs-btn-bg, transparent);--exercise-btn-color: var(--bs-btn-color, #f8f8f8);--exercise-btn-border-color: var(--bs-btn-border-color, #f8f8f8);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #f8f8f8);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #f8f8f8);--exercise-btn-hover-color: var(--bs-btn-hover-color, #000000)}@media only screen and (max-width: 576px){:not(.reveal) .card-header .btn-exercise-editor>.btn-label-exercise-editor{max-width:0px;margin-left:-4px;overflow:hidden;transition:max-width .2s ease-in,margin-left .05s ease-out .2s}:not(.reveal) .card-header .btn-exercise-editor:hover>.btn-label-exercise-editor{position:inherit;max-width:80px;margin-left:0;transition:max-width .2s ease-out .05s,margin-left .05s ease-in}}.reveal .card.exercise-editor .btn-group{border-radius:.375rem;position:relative;display:inline-flex;vertical-align:middle}.reveal .card.exercise-editor .btn-group>.btn{position:relative;flex:1 1 auto}.reveal .card.exercise-editor .btn-group>:not(.btn-check:first-child)+.btn,.reveal .card.exercise-editor .btn-group>.btn-group:not(:first-child){margin-left:-1px}.reveal .card.exercise-editor .btn-group>.btn:not(:last-child):not(.dropdown-toggle),.reveal .card.exercise-editor .btn-group>.btn.dropdown-toggle-split:first-child,.reveal .card.exercise-editor .btn-group>.btn-group:not(:last-child)>.btn{border-top-right-radius:0;border-bottom-right-radius:0}.reveal .card.exercise-editor .btn-group>.btn:nth-child(n+3),.reveal .card.exercise-editor .btn-group>:not(.btn-check)+.btn,.reveal .card.exercise-editor .btn-group>.btn-group:not(:first-child)>.btn{border-top-left-radius:0;border-bottom-left-radius:0}.reveal .btn.btn-exercise-editor{display:inline-block;padding:.25rem .5rem;font-size:1rem;color:var(--exercise-btn-color);background-color:var(--exercise-btn-bg);text-align:center;text-decoration:none;vertical-align:middle;cursor:pointer;user-select:none;border:1px solid var(--exercise-btn-border-color);border-radius:.375rem;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out}.reveal .btn.btn-exercise-editor:hover{color:var(--exercise-btn-hover-color);background-color:var(--exercise-btn-hover-bg);border-color:var(--exercise-btn-hover-border-color)}.reveal .btn.btn-exercise-editor:disabled,.reveal .btn.btn-exercise-editor.disabled,.reveal .btn-exercise-editor fieldset:disabled .btn{pointer-events:none;opacity:.65}.reveal .card.exercise-editor .spinner-grow{background-color:currentcolor;opacity:0;display:inline-block;width:1.5rem;height:1.5rem;vertical-align:-.125em;border-radius:50%;animation:.75s linear infinite spinner-grow}.reveal .cell-output-container pre code{overflow:auto;max-height:initial}.reveal .alert.exercise-grade{font-size:.55em;position:relative;padding:1rem;margin:1rem 0;border-radius:.25rem;color:var(--exercise-alert-color);background-color:var(--exercise-alert-bg);border:1px solid var(--exercise-alert-border-color)}.reveal .alert.exercise-grade .alert-link{font-weight:700;color:var(--exercise-alert-link-color)}.quarto-light .reveal .exercise-grade.alert-info{--exercise-alert-color: #055160;--exercise-alert-bg: #cff4fc;--exercise-alert-border-color: #9eeaf9;--exercise-alert-link-color: #055160}.quarto-light .reveal .exercise-grade.alert-success{--exercise-alert-color: #0a3622;--exercise-alert-bg: #d1e7dd;--exercise-alert-border-color: #a3cfbb;--exercise-alert-link-color: #0a3622}.quarto-light .reveal .exercise-grade.alert-warning{--exercise-alert-color: #664d03;--exercise-alert-bg: #fff3cd;--exercise-alert-border-color: #ffe69c;--exercise-alert-link-color: #664d03}.quarto-light .reveal .exercise-grade.alert-danger{--exercise-alert-color: #58151c;--exercise-alert-bg: #f8d7da;--exercise-alert-border-color: #f1aeb5;--exercise-alert-link-color: #58151c}.quarto-dark .reveal .exercise-grade.alert-info{--exercise-alert-color: #ffffff;--exercise-alert-bg: #3498db;--exercise-alert-border-color: #3498db;--exercise-alert-link-color: #ffffff}.quarto-dark .reveal .exercise-grade.alert-success{--exercise-alert-color: #ffffff;--exercise-alert-bg: #00bc8c;--exercise-alert-border-color: #00bc8c;--exercise-alert-link-color: #ffffff}.quarto-dark .reveal .exercise-grade.alert-warning{--exercise-alert-color: #ffffff;--exercise-alert-bg: #f39c12;--exercise-alert-border-color: #f39c12;--exercise-alert-link-color: #ffffff}.quarto-dark .reveal .exercise-grade.alert-danger{--exercise-alert-color: #ffffff;--exercise-alert-bg: #e74c3c;--exercise-alert-border-color: #e74c3c;--exercise-alert-link-color: #ffffff}
+.quarto-light{--exercise-main-color: var(--bs-body-color, var(--r-main-color, #212529));--exercise-main-bg: var(--bs-body-bg, var(--r-background-color, #ffffff));--exercise-primary-rgb: var(--bs-primary-rgb, 13, 110, 253);--exercise-gray: var(--bs-gray-300, #dee2e6);--exercise-cap-bg: var(--bs-light-bg-subtle, #f8f8f8);--exercise-line-bg: rgba(var(--exercise-primary-rgb), .05);--exercise-line-gutter-bg: rgba(var(--exercise-primary-rgb), .1);--exercise-code-block-color: var(--quarto-scss-export-code-block-color, var(--exercise-main-color));--exercise-code-block-bg: var(--quarto-scss-export-code-block-bg, var(--exercise-main-bg))}.quarto-dark{--exercise-main-color: var(--bs-body-color, var(--r-main-color, #ffffff));--exercise-main-bg: var(--bs-body-bg, var(--r-background-color, #222222));--exercise-primary-rgb: var(--bs-primary-rgb, 55, 90, 127);--exercise-gray: var(--bs-gray-700, #434343);--exercise-cap-bg: var(--bs-card-cap-bg, #505050);--exercise-line-bg: rgba(var(--exercise-primary-rgb), .2);--exercise-line-gutter-bg: rgba(var(--exercise-primary-rgb), .4);--exercise-code-block-color: var(--quarto-scss-export-code-block-color, var(--exercise-main-color));--exercise-code-block-bg: var(--quarto-scss-export-code-block-bg, var(--exercise-main-bg))}.webr-ojs-exercise.exercise-solution,.webr-ojs-exercise.exercise-hint{border:var(--exercise-gray) 1px solid;border-radius:5px;padding:1rem}.exercise-hint .exercise-hint,.exercise-solution .exercise-solution{border:none;padding:0}.webr-ojs-exercise.exercise-solution>.callout,.webr-ojs-exercise.exercise-hint>.callout{margin:-1rem;border:0}#exercise-loading-indicator{position:fixed;bottom:0;right:0;font-size:1.2rem;padding:.2rem .75rem;border:1px solid var(--exercise-gray);background-color:var(--exercise-cap-bg);border-top-left-radius:5px}#exercise-loading-indicator>.spinner-grow{min-width:1rem}.exercise-loading-details+.exercise-loading-details:before{content:"/ "}@media only screen and (max-width: 576px){#exercise-loading-indicator{font-size:.8rem;padding:.1rem .5rem}#exercise-loading-indicator>.spinner-grow{min-width:.66rem}#exercise-loading-indicator .gap-2{gap:.2rem!important}#exercise-loading-indicator .spinner-grow{--bs-spinner-width: .66rem;--bs-spinner-height: .66rem}}.btn.btn-exercise-editor:disabled,.btn.btn-exercise-editor.disabled,.btn-exercise-editor fieldset:disabled .btn{transition:opacity .5s}.card.exercise-editor .card-header a.btn{--bs-btn-padding-x: .5rem;--bs-btn-padding-y: .15rem;--bs-btn-font-size: .75rem}.quarto-dark .card.exercise-editor .card-header .btn.btn-outline-dark{--bs-btn-color: #f8f8f8;--bs-btn-border-color: #f8f8f8;--bs-btn-hover-color: #000;--bs-btn-hover-bg: #f8f8f8;--bs-btn-hover-border-color: #f8f8f8;--bs-btn-focus-shadow-rgb: 248, 248, 248;--bs-btn-active-color: #000;--bs-btn-active-bg: #f8f8f8;--bs-btn-active-border-color: #f8f8f8;--bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);--bs-btn-disabled-color: #f8f8f8;--bs-btn-disabled-bg: transparent;--bs-btn-disabled-border-color: #f8f8f8;--bs-btn-bg: transparent;--bs-gradient: none}.card.exercise-editor{--exercise-min-lines: 0;--exercise-max-lines: infinity;--exercise-font-size: var(--bs-body-font-size, 1rem)}.card.exercise-editor .card-header{padding:.5rem 1rem;background-color:var(--exercise-cap-bg);border-bottom:1px solid rgba(0,0,0,.175)}.card.exercise-editor .cm-editor{color:var(--exercise-code-block-color);background-color:var(--exercise-code-block-bg);max-height:calc(var(--exercise-max-lines) * 1.4 * var(--exercise-font-size) + 8px)}.card.exercise-editor .cm-content{caret-color:var(--exercise-code-block-color)}.card.exercise-editor .cm-cursor,.card.exercise-editor .cm-dropCursor{border-left-color:var(--exercise-code-block-color)}.card.exercise-editor .cm-focused .cm-selectionBackgroundm .cm-selectionBackground,.card.exercise-editor .cm-content ::selection{background-color:rgba(var(--exercise-primary-rgb),.1)}.card.exercise-editor .cm-activeLine{background-color:var(--exercise-line-bg)}.card.exercise-editor .cm-activeLineGutter{background-color:var(--exercise-line-gutter-bg)}.card.exercise-editor .cm-gutters{background-color:var(--exercise-cap-bg);color:var(--exercise-main-color);border-right:1px solid var(--exercise-gray)}.card.exercise-editor .cm-content,.card.exercise-editor .cm-gutter{min-height:calc(var(--exercise-min-lines) * 1.4 * var(--exercise-font-size) + 8px)}.card.exercise-editor .cm-scroller{line-height:1.4;overflow:auto}:root{--exercise-editor-hl-al: var(--quarto-hl-al-color, #AD0000);--exercise-editor-hl-an: var(--quarto-hl-an-color, #5E5E5E);--exercise-editor-hl-at: var(--quarto-hl-at-color, #657422);--exercise-editor-hl-bn: var(--quarto-hl-bn-color, #AD0000);--exercise-editor-hl-ch: var(--quarto-hl-ch-color, #20794D);--exercise-editor-hl-co: var(--quarto-hl-co-color, #5E5E5E);--exercise-editor-hl-cv: var(--quarto-hl-cv-color, #5E5E5E);--exercise-editor-hl-cn: var(--quarto-hl-cn-color, #8f5902);--exercise-editor-hl-cf: var(--quarto-hl-cf-color, #003B4F);--exercise-editor-hl-dt: var(--quarto-hl-dt-color, #AD0000);--exercise-editor-hl-dv: var(--quarto-hl-dv-color, #AD0000);--exercise-editor-hl-do: var(--quarto-hl-do-color, #5E5E5E);--exercise-editor-hl-er: var(--quarto-hl-er-color, #AD0000);--exercise-editor-hl-fl: var(--quarto-hl-fl-color, #AD0000);--exercise-editor-hl-fu: var(--quarto-hl-fu-color, #4758AB);--exercise-editor-hl-im: var(--quarto-hl-im-color, #00769E);--exercise-editor-hl-in: var(--quarto-hl-in-color, #5E5E5E);--exercise-editor-hl-kw: var(--quarto-hl-kw-color, #003B4F);--exercise-editor-hl-op: var(--quarto-hl-op-color, #5E5E5E);--exercise-editor-hl-ot: var(--quarto-hl-ot-color, #003B4F);--exercise-editor-hl-pp: var(--quarto-hl-pp-color, #AD0000);--exercise-editor-hl-sc: var(--quarto-hl-sc-color, #5E5E5E);--exercise-editor-hl-ss: var(--quarto-hl-ss-color, #20794D);--exercise-editor-hl-st: var(--quarto-hl-st-color, #20794D);--exercise-editor-hl-va: var(--quarto-hl-va-color, #111111);--exercise-editor-hl-vs: var(--quarto-hl-vs-color, #20794D);--exercise-editor-hl-wa: var(--quarto-hl-wa-color, #5E5E5E)}*[data-bs-theme=dark]{--exercise-editor-hl-al: var(--quarto-hl-al-color, #f07178);--exercise-editor-hl-an: var(--quarto-hl-an-color, #d4d0ab);--exercise-editor-hl-at: var(--quarto-hl-at-color, #00e0e0);--exercise-editor-hl-bn: var(--quarto-hl-bn-color, #d4d0ab);--exercise-editor-hl-bu: var(--quarto-hl-bu-color, #abe338);--exercise-editor-hl-ch: var(--quarto-hl-ch-color, #abe338);--exercise-editor-hl-co: var(--quarto-hl-co-color, #f8f8f2);--exercise-editor-hl-cv: var(--quarto-hl-cv-color, #ffd700);--exercise-editor-hl-cn: var(--quarto-hl-cn-color, #ffd700);--exercise-editor-hl-cf: var(--quarto-hl-cf-color, #ffa07a);--exercise-editor-hl-dt: var(--quarto-hl-dt-color, #ffa07a);--exercise-editor-hl-dv: var(--quarto-hl-dv-color, #d4d0ab);--exercise-editor-hl-do: var(--quarto-hl-do-color, #f8f8f2);--exercise-editor-hl-er: var(--quarto-hl-er-color, #f07178);--exercise-editor-hl-ex: var(--quarto-hl-ex-color, #00e0e0);--exercise-editor-hl-fl: var(--quarto-hl-fl-color, #d4d0ab);--exercise-editor-hl-fu: var(--quarto-hl-fu-color, #ffa07a);--exercise-editor-hl-im: var(--quarto-hl-im-color, #abe338);--exercise-editor-hl-in: var(--quarto-hl-in-color, #d4d0ab);--exercise-editor-hl-kw: var(--quarto-hl-kw-color, #ffa07a);--exercise-editor-hl-op: var(--quarto-hl-op-color, #ffa07a);--exercise-editor-hl-ot: var(--quarto-hl-ot-color, #00e0e0);--exercise-editor-hl-pp: var(--quarto-hl-pp-color, #dcc6e0);--exercise-editor-hl-re: var(--quarto-hl-re-color, #00e0e0);--exercise-editor-hl-sc: var(--quarto-hl-sc-color, #abe338);--exercise-editor-hl-ss: var(--quarto-hl-ss-color, #abe338);--exercise-editor-hl-st: var(--quarto-hl-st-color, #abe338);--exercise-editor-hl-va: var(--quarto-hl-va-color, #00e0e0);--exercise-editor-hl-vs: var(--quarto-hl-vs-color, #abe338);--exercise-editor-hl-wa: var(--quarto-hl-wa-color, #dcc6e0)}pre>code.sourceCode span.tok-keyword,.exercise-editor-body>.cm-editor span.tok-keyword{color:var(--exercise-editor-hl-kw)}pre>code.sourceCode span.tok-operator,.exercise-editor-body>.cm-editor span.tok-operator{color:var(--exercise-editor-hl-op)}pre>code.sourceCode span.tok-definitionOperator,.exercise-editor-body>.cm-editor span.tok-definitionOperator{color:var(--exercise-editor-hl-ot)}pre>code.sourceCode span.tok-compareOperator,.exercise-editor-body>.cm-editor span.tok-compareOperator{color:var(--exercise-editor-hl-ot)}pre>code.sourceCode span.tok-attributeName,.exercise-editor-body>.cm-editor span.tok-attributeName{color:var(--exercise-editor-hl-at)}pre>code.sourceCode span.tok-controlKeyword,.exercise-editor-body>.cm-editor span.tok-controlKeyword{color:var(--exercise-editor-hl-cf)}pre>code.sourceCode span.tok-comment,.exercise-editor-body>.cm-editor span.tok-comment{color:var(--exercise-editor-hl-co)}pre>code.sourceCode span.tok-string,.exercise-editor-body>.cm-editor span.tok-string{color:var(--exercise-editor-hl-st)}pre>code.sourceCode span.tok-string2,.exercise-editor-body>.cm-editor span.tok-string2{color:var(--exercise-editor-hl-ss)}pre>code.sourceCode span.tok-variableName,.exercise-editor-body>.cm-editor span.tok-variableName{color:var(--exercise-editor-hl-va)}pre>code.sourceCode span.tok-bool,pre>code.sourceCode span.tok-literal,pre>code.sourceCode span.tok-separator,.exercise-editor-body>.cm-editor span.tok-bool,.exercise-editor-body>.cm-editor span.tok-literal,.exercise-editor-body>.cm-editor span.tok-separator{color:var(--exercise-editor-hl-cn)}pre>code.sourceCode span.tok-bool,pre>code.sourceCode span.tok-literal,.exercise-editor-body>.cm-editor span.tok-bool,.exercise-editor-body>.cm-editor span.tok-literal{color:var(--exercise-editor-hl-cn)}pre>code.sourceCode span.tok-number,pre>code.sourceCode span.tok-integer,.exercise-editor-body>.cm-editor span.tok-number,.exercise-editor-body>.cm-editor span.tok-integer{color:var(--exercise-editor-hl-dv)}pre>code.sourceCode span.tok-function-variableName,.exercise-editor-body>.cm-editor span.tok-function-variableName{color:var(--exercise-editor-hl-fu)}pre>code.sourceCode span.tok-function-attributeName,.exercise-editor-body>.cm-editor span.tok-function-attributeName{color:var(--exercise-editor-hl-at)}div.exercise-cell-output.cell-output-stdout pre code,div.exercise-cell-output.cell-output-stderr pre code{white-space:pre-wrap;word-wrap:break-word}div.exercise-cell-output.cell-output-stderr pre code{color:var(--exercise-editor-hl-er, #AD0000)}div.cell-output-pyodide table{border:none;margin:0 auto 1em}div.cell-output-pyodide thead{border-bottom:1px solid var(--exercise-main-color)}div.cell-output-pyodide td,div.cell-output-pyodide th,div.cell-output-pyodide tr{padding:.5em;line-height:normal}div.cell-output-pyodide th{font-weight:700}div.cell-output-display canvas{background-color:#fff}.tab-pane>.exercise-tab-pane-header+div.webr-ojs-exercise{margin-top:1em}.alert .exercise-feedback p:last-child{margin-bottom:0}.alert.exercise-grade{animation-duration:.25s;animation-name:exercise-grade-slidein}@keyframes exercise-grade-slidein{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}.alert.exercise-grade p:last-child{margin-bottom:0}.alert.exercise-grade pre{white-space:pre-wrap;color:inherit}.observablehq pre>code.sourceCode{white-space:pre;position:relative}.observablehq div.sourceCode{margin:1em 0!important}.observablehq pre.sourceCode{margin:0!important}@media screen{.observablehq div.sourceCode{overflow:auto}}@media print{.observablehq pre>code.sourceCode{white-space:pre-wrap}.observablehq pre>code.sourceCode>span{text-indent:-5em;padding-left:5em}}.reveal .d-none{display:none!important}.reveal .d-flex{display:flex!important}.reveal .card.exercise-editor .justify-content-between{justify-content:space-between!important}.reveal .card.exercise-editor .align-items-center{align-items:center!important}.reveal .card.exercise-editor .gap-1{gap:.25rem!important}.reveal .card.exercise-editor .gap-2{gap:.5rem!important}.reveal .card.exercise-editor .gap-3{gap:.75rem!important}.reveal .card.exercise-editor{--exercise-font-size: 1.3rem;margin:1rem 0;border:1px solid rgba(0,0,0,.175);border-radius:.375rem;font-size:var(--exercise-font-size);overflow:hidden}.reveal .card.exercise-editor .card-header{padding:.5rem 1rem;background-color:var(--exercise-cap-bg);border-bottom:1px solid rgba(0,0,0,.175)}.reveal .cell-output-webr.cell-output-display,.reveal .cell-output-pyodide.cell-output-display{text-align:center}.quarto-light .reveal .btn.btn-exercise-editor.btn-primary{--exercise-btn-bg: var(--bs-btn-bg, #0d6efd);--exercise-btn-color: var(--bs-btn-color, #ffffff);--exercise-btn-border-color: var(--bs-btn-border-color, #0d6efd);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #0b5ed7);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #0b5ed7);--exercise-btn-hover-color: var(--bs-btn-hover-color, #ffffff)}.quarto-dark .reveal .btn.btn-exercise-editor.btn-primary{--exercise-btn-bg: var(--bs-btn-bg, #375a7f);--exercise-btn-color: var(--bs-btn-color, #ffffff);--exercise-btn-border-color: var(--bs-btn-border-color, #375a7f);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #2c4866);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #2c4866);--exercise-btn-hover-color: var(--bs-btn-hover-color, #ffffff)}.quarto-light .reveal .btn.btn-exercise-editor.btn-outline-dark{--exercise-btn-bg: var(--bs-btn-bg, transparent);--exercise-btn-color: var(--bs-btn-color, #333);--exercise-btn-border-color: var(--bs-btn-border-color, #333);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #333);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #333);--exercise-btn-hover-color: var(--bs-btn-hover-color, #ffffff)}.quarto-dark .reveal .btn.btn-exercise-editor.btn-outline-dark{--exercise-btn-bg: var(--bs-btn-bg, transparent);--exercise-btn-color: var(--bs-btn-color, #f8f8f8);--exercise-btn-border-color: var(--bs-btn-border-color, #f8f8f8);--exercise-btn-hover-border-color: var(--bs-btn-hover-border-color, #f8f8f8);--exercise-btn-hover-bg: var(--bs-btn-hover-bg, #f8f8f8);--exercise-btn-hover-color: var(--bs-btn-hover-color, #000000)}@media only screen and (max-width: 576px){:not(.reveal) .card-header .btn-exercise-editor>.btn-label-exercise-editor{max-width:0px;margin-left:-4px;overflow:hidden;transition:max-width .2s ease-in,margin-left .05s ease-out .2s}:not(.reveal) .card-header .btn-exercise-editor:hover>.btn-label-exercise-editor{position:inherit;max-width:80px;margin-left:0;transition:max-width .2s ease-out .05s,margin-left .05s ease-in}}.reveal .card.exercise-editor .btn-group{border-radius:.375rem;position:relative;display:inline-flex;vertical-align:middle}.reveal .card.exercise-editor .btn-group>.btn{position:relative;flex:1 1 auto}.reveal .card.exercise-editor .btn-group>:not(.btn-check:first-child)+.btn,.reveal .card.exercise-editor .btn-group>.btn-group:not(:first-child){margin-left:-1px}.reveal .card.exercise-editor .btn-group>.btn:not(:last-child):not(.dropdown-toggle),.reveal .card.exercise-editor .btn-group>.btn.dropdown-toggle-split:first-child,.reveal .card.exercise-editor .btn-group>.btn-group:not(:last-child)>.btn{border-top-right-radius:0;border-bottom-right-radius:0}.reveal .card.exercise-editor .btn-group>.btn:nth-child(n+3),.reveal .card.exercise-editor .btn-group>:not(.btn-check)+.btn,.reveal .card.exercise-editor .btn-group>.btn-group:not(:first-child)>.btn{border-top-left-radius:0;border-bottom-left-radius:0}.reveal .btn.btn-exercise-editor{display:inline-block;padding:.25rem .5rem;font-size:1rem;color:var(--exercise-btn-color);background-color:var(--exercise-btn-bg);text-align:center;text-decoration:none;vertical-align:middle;cursor:pointer;user-select:none;border:1px solid var(--exercise-btn-border-color);border-radius:.375rem;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out}.reveal .btn.btn-exercise-editor:hover{color:var(--exercise-btn-hover-color);background-color:var(--exercise-btn-hover-bg);border-color:var(--exercise-btn-hover-border-color)}.reveal .btn.btn-exercise-editor:disabled,.reveal .btn.btn-exercise-editor.disabled,.reveal .btn-exercise-editor fieldset:disabled .btn{pointer-events:none;opacity:.65}.reveal .card.exercise-editor .spinner-grow{background-color:currentcolor;opacity:0;display:inline-block;width:1.5rem;height:1.5rem;vertical-align:-.125em;border-radius:50%;animation:.75s linear infinite spinner-grow}.reveal .cell-output-container pre code{overflow:auto;max-height:initial}.reveal .alert.exercise-grade{font-size:.55em;position:relative;padding:1rem;margin:1rem 0;border-radius:.25rem;color:var(--exercise-alert-color);background-color:var(--exercise-alert-bg);border:1px solid var(--exercise-alert-border-color)}.reveal .alert.exercise-grade .alert-link{font-weight:700;color:var(--exercise-alert-link-color)}.quarto-light .reveal .exercise-grade.alert-info{--exercise-alert-color: #055160;--exercise-alert-bg: #cff4fc;--exercise-alert-border-color: #9eeaf9;--exercise-alert-link-color: #055160}.quarto-light .reveal .exercise-grade.alert-success{--exercise-alert-color: #0a3622;--exercise-alert-bg: #d1e7dd;--exercise-alert-border-color: #a3cfbb;--exercise-alert-link-color: #0a3622}.quarto-light .reveal .exercise-grade.alert-warning{--exercise-alert-color: #664d03;--exercise-alert-bg: #fff3cd;--exercise-alert-border-color: #ffe69c;--exercise-alert-link-color: #664d03}.quarto-light .reveal .exercise-grade.alert-danger{--exercise-alert-color: #58151c;--exercise-alert-bg: #f8d7da;--exercise-alert-border-color: #f1aeb5;--exercise-alert-link-color: #58151c}.quarto-dark .reveal .exercise-grade.alert-info{--exercise-alert-color: #ffffff;--exercise-alert-bg: #3498db;--exercise-alert-border-color: #3498db;--exercise-alert-link-color: #ffffff}.quarto-dark .reveal .exercise-grade.alert-success{--exercise-alert-color: #ffffff;--exercise-alert-bg: #00bc8c;--exercise-alert-border-color: #00bc8c;--exercise-alert-link-color: #ffffff}.quarto-dark .reveal .exercise-grade.alert-warning{--exercise-alert-color: #ffffff;--exercise-alert-bg: #f39c12;--exercise-alert-border-color: #f39c12;--exercise-alert-link-color: #ffffff}.quarto-dark .reveal .exercise-grade.alert-danger{--exercise-alert-color: #ffffff;--exercise-alert-bg: #e74c3c;--exercise-alert-border-color: #e74c3c;--exercise-alert-link-color: #ffffff}
diff --git a/live-runtime/src/css/live-runtime.css b/live-runtime/src/css/live-runtime.css
index c333dbd..96c828a 100644
--- a/live-runtime/src/css/live-runtime.css
+++ b/live-runtime/src/css/live-runtime.css
@@ -7,6 +7,8 @@
   --exercise-cap-bg: var(--bs-light-bg-subtle, #f8f8f8);
   --exercise-line-bg: rgba(var(--exercise-primary-rgb), 0.05);
   --exercise-line-gutter-bg: rgba(var(--exercise-primary-rgb), 0.1);
+  --exercise-code-block-color: var(--quarto-scss-export-code-block-color, var(--exercise-main-color));
+  --exercise-code-block-bg: var(--quarto-scss-export-code-block-bg, var(--exercise-main-bg));
 }
 
 .quarto-dark {
@@ -17,6 +19,8 @@
   --exercise-cap-bg: var(--bs-card-cap-bg, #505050);
   --exercise-line-bg: rgba(var(--exercise-primary-rgb), 0.2);
   --exercise-line-gutter-bg: rgba(var(--exercise-primary-rgb), 0.4);
+  --exercise-code-block-color: var(--quarto-scss-export-code-block-color, var(--exercise-main-color));
+  --exercise-code-block-bg: var(--quarto-scss-export-code-block-bg, var(--exercise-main-bg));
 }
 
 /* Minimal styling for hints and solution blocks */
@@ -125,19 +129,19 @@
 }
 
 .card.exercise-editor .cm-editor {
-  color: var(--exercise-main-color);
-  background-color: var(--exercise-main-bg);
+  color: var(--exercise-code-block-color);
+  background-color: var(--exercise-code-block-bg);
   /* n * line-height + padding */
   max-height: calc(var(--exercise-max-lines) * 1.4 * var(--exercise-font-size) + 8px);
 }
 
 .card.exercise-editor .cm-content {
-  caret-color: var(--exercise-main-color);
+  caret-color: var(--exercise-code-block-color);
 }
 
 .card.exercise-editor .cm-cursor,
 .card.exercise-editor .cm-dropCursor {
-  border-left-color: var(--exercise-main-color);
+  border-left-color: var(--exercise-code-block-color);
 }
 
 .card.exercise-editor .cm-focused .cm-selectionBackgroundm .cm-selectionBackground,