Reframe as a linkable, cited callout ("nohello for charts")

Make each sin a self-contained page you send instead of re-explaining:

- Per-sin "poke" one-liner (the shareable callout)
- Citations system: a canonical bibliography (src/lib/references.ts) of the
  field's giants — Munzner, Knaflic, Tufte, Cairo, Few, Cleveland & McGill,
  Wilke, Healy, Calling Bullshit, data-to-viz, Junk Charts, Spurious
  Correlations, FT Visual Vocabulary — cited per sin with a relevance note
- "Don't take our word for it" receipts block on each sin
- /canon page: the full annotated bibliography
- Share control: copy-link "send them the receipt" (progressive enhancement)
- Restructured sin page: poke -> proof -> why -> receipts -> share
- Header nav (Sins / Canon); homepage reframed to the "send the link" mission

Also fix the truncated-axis bad chart: clamp the [90,100] domain so the bar
baseline doesn't overflow thousands of pixels off-canvas.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XPEvmMbac2fCvKXpQcovj8

src/charts/truncated-axis-bad.json

@@ -23,7 +23,7 @@
     "y": {
       "field": "revenue",
       "type": "quantitative",
-      "scale": { "domain": [90, 100] },
+      "scale": { "domain": [90, 100], "zero": false, "clamp": true },
       "title": "Revenue ($M)"
     }
   }

src/components/Citations.astro

@@ -0,0 +1,36 @@
+---
+import { getReference, citeLabel } from '../lib/references';
+
+interface Props {
+  citations: { key: string; note?: string }[];
+}
+const { citations } = Astro.props;
+const resolved = citations.map((c) => ({ ...c, ref: getReference(c.key) }));
+---
+
+{
+  resolved.length > 0 && (
+    <section class="receipts" aria-labelledby="receipts-h">
+      <h2 id="receipts-h" class="receipts__title">Don’t take our word for it</h2>
+      <p class="receipts__lede">The giants who say the same thing, so you don’t have to argue:</p>
+      <ol class="receipts__list">
+        {resolved.map(({ ref, note }) => (
+          <li class="receipt">
+            <div class="receipt__cite">
+              {ref.url ? (
+                <a href={ref.url} rel="noopener" class="receipt__work">
+                  {citeLabel(ref)}
+                </a>
+              ) : (
+                <span class="receipt__work">{citeLabel(ref)}</span>
+              )}
+              <span class={`receipt__kind receipt__kind--${ref.kind}`}>{ref.kind}</span>
+              {ref.free && <span class="receipt__free">free online</span>}
+            </div>
+            {note && <p class="receipt__note">{note}</p>}
+          </li>
+        ))}
+      </ol>
+    </section>
+  )
+}

src/components/ShareLink.astro

@@ -0,0 +1,43 @@
+---
+// The "send this to them" mechanic — the whole point of the site.
+// Progressive enhancement: the URL is always visible and selectable; the
+// button just makes copying a one-click affair when JS is available.
+interface Props {
+  url: string;
+}
+const { url } = Astro.props;
+---
+
+<aside class="share" aria-label="Share this sin">
+  <p class="share__prompt">Caught someone mid-sin? Send them the receipt:</p>
+  <div class="share__row">
+    <input class="share__url" type="text" readonly value={url} aria-label="Link to this page" />
+    <button class="share__btn" type="button" data-url={url}>Copy link</button>
+  </div>
+</aside>
+
+<script>
+  for (const btn of document.querySelectorAll<HTMLButtonElement>('.share__btn')) {
+    btn.addEventListener('click', async () => {
+      const url = btn.dataset.url ?? '';
+      const done = () => {
+        const label = btn.textContent;
+        btn.textContent = 'Copied ✓';
+        btn.classList.add('is-copied');
+        setTimeout(() => {
+          btn.textContent = label;
+          btn.classList.remove('is-copied');
+        }, 1600);
+      };
+      try {
+        await navigator.clipboard.writeText(url);
+        done();
+      } catch {
+        const input = btn.previousElementSibling as HTMLInputElement | null;
+        input?.select();
+        document.execCommand('copy');
+        done();
+      }
+    });
+  }
+</script>

src/content.config.ts

@@ -11,6 +11,13 @@ const sins = defineCollection({
     title: z.string(),
     // Short one-line summary shown on the index gallery.
     summary: z.string(),
+    // The cheeky one-line callout — the thing you send the sinner.
+    poke: z.string(),
+    // Citations into the canon (src/lib/references.ts) with a per-sin note on
+    // why that source is relevant. This is the "don't take our word for it".
+    citations: z
+      .array(z.object({ key: z.string(), note: z.string().optional() }))
+      .default([]),
     // Grouping, e.g. "Misleading Scales", "Chart-Type Abuse".
     category: z.string(),
     // 1 (venial) … 5 (mortal). Drives the flame rating in the UI.

src/content/sins/dual-axis-deception.md

@@ -1,12 +1,22 @@
 ---
 title: "The Dual-Axis Deception"
 summary: "Two unrelated series on two independent axes, engineered to look correlated."
+poke: "Two y-axes, tuned until the lines kiss. Congratulations — you can now make anything 'cause' anything."
 category: "False Relationships"
 severity: 5
 tags: ["dual axis", "correlation", "line chart"]
 badChart: "dual-axis-bad"
 fixedChart: "dual-axis-fixed"
 date: 2026-08-05
+citations:
+  - key: datatoviz
+    note: "Lists “using two Y axes” as a top caveat — a way to manipulate the story."
+  - key: spurious
+    note: "Thousands of nonsense correlations: proof that “they move together” proves nothing."
+  - key: howchartslie
+    note: "Cairo on how aligned axes manufacture relationships that aren’t there."
+  - key: swd
+    note: "Knaflic’s standing advice: avoid the second axis; separate or index instead."
 ---
 
 ## The sin

src/content/sins/pie-chart-overload.md

@@ -1,12 +1,22 @@
 ---
 title: "Pie Chart Overload"
 summary: "Eight near-identical slices no human eye can rank. A bar chart was right there."
+poke: "Eight slices, three of them the same size. Nobody can read this. A bar chart could."
 category: "Chart-Type Abuse"
 severity: 3
 tags: ["pie chart", "part-to-whole", "comparison"]
 badChart: "pie-overload-bad"
 fixedChart: "pie-overload-fixed"
 date: 2026-08-05
+citations:
+  - key: fewpies
+    note: "“Save the Pies for Dessert” — the definitive, free takedown of the overloaded pie."
+  - key: clevelandmcgill
+    note: "Their ranking shows angle and area are judged far worse than position along a scale."
+  - key: junkcharts
+    note: "Kaiser Fung’s running #onelesspie campaign exists for precisely this chart."
+  - key: datatoviz
+    note: "Pie charts are the first entry in its catalogue of caveats."
 ---
 
 ## The sin

src/content/sins/truncated-y-axis.md

@@ -1,12 +1,22 @@
 ---
 title: "The Truncated Y-Axis"
 summary: "Chopping the baseline off a bar chart to make small differences look enormous."
+poke: "You started the y-axis at 90. That's not a bar chart — it's a magic trick."
 category: "Misleading Scales"
 severity: 4
 tags: ["bar chart", "axis", "exaggeration"]
 badChart: "truncated-axis-bad"
 fixedChart: "truncated-axis-fixed"
 date: 2026-08-05
+citations:
+  - key: callingbullshit
+    note: "Their “Misleading Axes” module is the canonical explainer for exactly this move."
+  - key: clevelandmcgill
+    note: "The perception research: readers compare bar length, so length must map to value from zero."
+  - key: tufte
+    note: "The “Lie Factor” puts an actual number on how much the graphic exaggerates."
+  - key: howchartslie
+    note: "Cairo devotes a chapter to scale manipulation like this one."
 ---
 
 ## The sin

src/layouts/BaseLayout.astro

@@ -32,7 +32,10 @@ const { title, description = 'A catalogue of data-visualization sins, styled on
         <a class="cds-header__name" href={href()}>
           Chart&nbsp;Sins <span class="mono">/ honest data-viz</span>
         </a>
-        <span class="cds-header__tag">built on Carbon</span>
+        <nav class="cds-header__nav" aria-label="Primary">
+          <a href={href()}>Sins</a>
+          <a href={href('canon/')}>Canon</a>
+        </nav>
       </div>
     </header>
 

src/lib/references.ts

@@ -0,0 +1,183 @@
+// The Canon — the shoulders of giants Chart Sins stands on.
+//
+// Each sin cites into this list by key, so a page can say "don't take our word
+// for it" and point at the authority that actually condemns the practice.
+// Add a reference once here; cite it from any number of sins.
+
+export type RefKind = 'book' | 'site' | 'paper';
+
+export interface Reference {
+  authors: string;
+  title: string;
+  /** Publisher / journal / site, for books and papers. */
+  work?: string;
+  year?: number;
+  url?: string;
+  kind: RefKind;
+  /** One line on why it belongs in the canon. */
+  blurb: string;
+  /** True for the free-to-read-online works, surfaced as a hint. */
+  free?: boolean;
+}
+
+export const REFERENCES = {
+  // --- books ---
+  munzner: {
+    authors: 'Tamara Munzner',
+    title: 'Visualization Analysis & Design',
+    work: 'CRC Press',
+    year: 2014,
+    url: 'https://www.cs.ubc.ca/~tmm/vadbook/',
+    kind: 'book',
+    blurb: 'The rigorous framework: what channels the eye reads accurately, and why position beats angle, length, and area.',
+  },
+  swd: {
+    authors: 'Cole Nussbaumer Knaflic',
+    title: 'Storytelling with Data',
+    work: 'Wiley',
+    year: 2015,
+    url: 'https://www.storytellingwithdata.com/books',
+    kind: 'book',
+    blurb: 'The practitioner’s bible on decluttering charts and directing attention honestly.',
+  },
+  tufte: {
+    authors: 'Edward R. Tufte',
+    title: 'The Visual Display of Quantitative Information',
+    work: 'Graphics Press (2nd ed.)',
+    year: 2001,
+    url: 'https://www.edwardtufte.com/book/the-visual-display-of-quantitative-information/',
+    kind: 'book',
+    blurb: 'Origin of the “Lie Factor,” chartjunk, and the data-ink ratio.',
+  },
+  howchartslie: {
+    authors: 'Alberto Cairo',
+    title: 'How Charts Lie',
+    work: 'W. W. Norton',
+    year: 2019,
+    url: 'http://www.thefunctionalart.com/',
+    kind: 'book',
+    blurb: 'A whole book on exactly this: the tricks charts use to mislead, and how to read past them.',
+  },
+  fewpies: {
+    authors: 'Stephen Few',
+    title: 'Save the Pies for Dessert',
+    work: 'Perceptual Edge',
+    year: 2007,
+    url: 'https://www.perceptualedge.com/articles/visual_business_intelligence/save_the_pies_for_dessert.pdf',
+    kind: 'paper',
+    blurb: 'The definitive takedown of the pie chart, from the field’s most stubborn advocate for clarity.',
+    free: true,
+  },
+  wilke: {
+    authors: 'Claus O. Wilke',
+    title: 'Fundamentals of Data Visualization',
+    work: 'O’Reilly',
+    year: 2019,
+    url: 'https://clauswilke.com/dataviz/',
+    kind: 'book',
+    blurb: 'Free, thorough, and organized by problem — a per-topic reference for doing it right.',
+    free: true,
+  },
+  healy: {
+    authors: 'Kieran Healy',
+    title: 'Data Visualization: A Practical Introduction',
+    work: 'Princeton University Press',
+    year: 2018,
+    url: 'https://socviz.co/',
+    kind: 'book',
+    blurb: 'Free online; strong on why perception, not taste, decides what works.',
+    free: true,
+  },
+  callingbullshit: {
+    authors: 'Carl T. Bergstrom & Jevin D. West',
+    title: 'Calling Bullshit',
+    work: 'Random House',
+    year: 2020,
+    url: 'https://www.callingbullshit.org/tools/tools_misleading_axes.html',
+    kind: 'book',
+    blurb: 'Book and free course; the “Misleading Axes” module is required reading for axis crimes.',
+    free: true,
+  },
+  huff: {
+    authors: 'Darrell Huff',
+    title: 'How to Lie with Statistics',
+    work: 'W. W. Norton',
+    year: 1954,
+    kind: 'book',
+    blurb: 'The 1954 classic that named the game; the truncated axis is right there in it.',
+  },
+  clevelandmcgill: {
+    authors: 'William S. Cleveland & Robert McGill',
+    title: 'Graphical Perception: Theory, Experimentation, and Application',
+    work: 'Journal of the American Statistical Association',
+    year: 1984,
+    url: 'https://www.jstor.org/stable/2288400',
+    kind: 'paper',
+    blurb: 'The experiments proving people judge position accurately and angle/area poorly — the root of most of these sins.',
+  },
+  schwabish: {
+    authors: 'Jonathan Schwabish',
+    title: 'Better Data Visualizations',
+    work: 'Columbia University Press',
+    year: 2021,
+    url: 'https://policyviz.com/books/',
+    kind: 'book',
+    blurb: 'A modern, chart-by-chart guide to which form fits which job.',
+  },
+
+  // --- sites ---
+  datatoviz: {
+    authors: 'Yan Holtz & Conor Healy',
+    title: 'From Data to Viz — Caveats',
+    work: 'data-to-viz.com',
+    url: 'https://www.data-to-viz.com/caveats.html',
+    kind: 'site',
+    blurb: 'A browsable catalogue of common dataviz mistakes, each with a fix.',
+    free: true,
+  },
+  junkcharts: {
+    authors: 'Kaiser Fung',
+    title: 'Junk Charts',
+    work: 'junkcharts.com',
+    url: 'https://junkcharts.typepad.com/',
+    kind: 'site',
+    blurb: 'Fifteen years of chart critique-and-redesign, plus the #onelesspie campaign.',
+    free: true,
+  },
+  spurious: {
+    authors: 'Tyler Vigen',
+    title: 'Spurious Correlations',
+    work: 'tylervigen.com',
+    url: 'https://www.tylervigen.com/spurious-correlations',
+    kind: 'site',
+    blurb: 'Thousands of nonsense correlations — the canonical proof that “they move together” proves nothing.',
+    free: true,
+  },
+  ftvisvocab: {
+    authors: 'Financial Times Visual Journalism',
+    title: 'Visual Vocabulary',
+    work: 'FT',
+    url: 'https://github.com/Financial-Times/chart-doctor/tree/main/visual-vocabulary',
+    kind: 'site',
+    blurb: 'A cheat sheet mapping what you want to say to the chart that says it.',
+    free: true,
+  },
+} as const satisfies Record<string, Reference>;
+
+export type ReferenceKey = keyof typeof REFERENCES;
+
+/** Resolve a citation key; throws at build time if it isn't in the canon. */
+export function getReference(key: string): Reference {
+  const ref = (REFERENCES as Record<string, Reference>)[key];
+  if (!ref) {
+    throw new Error(
+      `Reference "${key}" is not in the canon (src/lib/references.ts). Known: ${Object.keys(REFERENCES).join(', ')}`,
+    );
+  }
+  return ref;
+}
+
+/** A short "Author, Title (Year)" label. */
+export function citeLabel(ref: Reference): string {
+  return `${ref.authors}, ${ref.title}${ref.year ? ` (${ref.year})` : ''}`;
+}

src/pages/canon.astro

@@ -0,0 +1,51 @@
+---
+import BaseLayout from '../layouts/BaseLayout.astro';
+import { REFERENCES, citeLabel, type RefKind } from '../lib/references';
+
+const groups: { kind: RefKind; heading: string; blurb: string }[] = [
+  { kind: 'book', heading: 'The books', blurb: 'The shelf every chart argument can lean on.' },
+  { kind: 'paper', heading: 'The papers & essays', blurb: 'The primary sources — where the evidence actually lives.' },
+  { kind: 'site', heading: 'The sites', blurb: 'Living references you can link straight into a thread.' },
+];
+
+const byKind = (kind: RefKind) => Object.values(REFERENCES).filter((r) => r.kind === kind);
+---
+
+<BaseLayout title="The Canon — Chart Sins" description="The books, papers, and sites Chart Sins stands on.">
+  <section class="wrap hero">
+    <p class="hero__eyebrow">// the shoulders we stand on</p>
+    <h1 class="expressive-display">The Canon</h1>
+    <p class="hero__lede">
+      Every sin here cites its sources. This is the whole shelf in one place —
+      the giants of data visualization who already made the case, so you can
+      link the receipt instead of relitigating it.
+    </p>
+  </section>
+
+  <div class="wrap canon">
+    {
+      groups.map((g) => (
+        <section class="canon__group">
+          <h2 class="canon__heading productive-heading-03">{g.heading}</h2>
+          <p class="helper">{g.blurb}</p>
+          <ul class="canon__list">
+            {byKind(g.kind).map((ref) => (
+              <li class="canon__item">
+                <div class="canon__cite">
+                  {ref.url ? (
+                    <a href={ref.url} rel="noopener" class="canon__work">{citeLabel(ref)}</a>
+                  ) : (
+                    <span class="canon__work">{citeLabel(ref)}</span>
+                  )}
+                  {ref.work && <span class="canon__pub">{ref.work}</span>}
+                  {ref.free && <span class="receipt__free">free online</span>}
+                </div>
+                <p class="canon__blurb">{ref.blurb}</p>
+              </li>
+            ))}
+          </ul>
+        </section>
+      ))
+    }
+  </div>
+</BaseLayout>

src/pages/index.astro

@@ -13,11 +13,13 @@ const sins = (await getCollection('sins', ({ data }) => !data.draft)).sort((a, b
 
 <BaseLayout title="Chart Sins">
   <section class="wrap hero">
-    <p class="hero__eyebrow">// a catalogue of data-visualization sins</p>
+    <p class="hero__eyebrow">// stop re-explaining the same chart mistake</p>
-    <h1 class="expressive-display">Charts that lie,<br />and the honest fix.</h1>
+    <h1 class="expressive-display">Someone made a<br />misleading chart again.</h1>
     <p class="hero__lede">
-      Each entry is a data-visualization mistake in the wild: the chart that
+      Don’t type the whole explanation for the hundredth time — send the link.
-      misleads, why it fools the eye, and the honest version that repents.
+      Each sin shows the deceptive chart beside its honest twin, names the tell,
+      and cites the giants who back you up. It’s <a href="https://nohello.net" rel="noopener">nohello.net</a>,
+      for bad charts.
     </p>
   </section>
 

src/pages/sins/[...slug].astro

@@ -2,6 +2,8 @@
 import { getCollection, render } from 'astro:content';
 import BaseLayout from '../../layouts/BaseLayout.astro';
 import VegaChart from '../../components/VegaChart.astro';
+import Citations from '../../components/Citations.astro';
+import ShareLink from '../../components/ShareLink.astro';
 import { getChartSpec, severityUnits, tagModifier } from '../../lib/charts';
 import { href } from '../../lib/url';
 
@@ -18,9 +20,12 @@ const { Content } = await render(sin);
 
 const badSpec = getChartSpec(sin.data.badChart);
 const fixedSpec = getChartSpec(sin.data.fixedChart);
+
+// Canonical, shareable URL for this sin — the thing you paste into a thread.
+const pageUrl = new URL(href(`sins/${sin.id}/`), Astro.site).toString();
 ---
 
-<BaseLayout title={`${sin.data.title} — Chart Sins`} description={sin.data.summary}>
+<BaseLayout title={`${sin.data.title} — Chart Sins`} description={sin.data.poke}>
   <article class="wrap sin">
     <nav class="breadcrumb"><a href={href()}>All sins</a> / {sin.data.title}</nav>
 
@@ -37,6 +42,7 @@ const fixedSpec = getChartSpec(sin.data.fixedChart);
         </span>
       </div>
       <h1 class="sin__title expressive-heading">{sin.data.title}</h1>
+      <p class="sin__poke">{sin.data.poke}</p>
       <div class="sin__tags">
         {sin.data.tags.map((t) => <span class="tag">{t}</span>)}
       </div>
@@ -52,9 +58,18 @@ const fixedSpec = getChartSpec(sin.data.fixedChart);
         <VegaChart spec={fixedSpec} title={`Honest chart: ${sin.data.title}`} />
       </div>
     </div>
+    <p class="compare__note">Same numbers, both charts. Only the design changed.</p>
 
     <div class="prose">
       <Content />
     </div>
+
+    <Citations citations={sin.data.citations} />
+
+    <ShareLink url={pageUrl} />
+
+    <p class="more-canon">
+      Building a case? See the <a href={href('canon/')}>full canon →</a>
+    </p>
   </article>
 </BaseLayout>

src/styles/global.css

@@ -235,10 +235,20 @@ code {
   font-family: var(--font-mono);
   letter-spacing: 0;
 }
-@media (max-width: 40rem) {
+.cds-header__nav {
-  .cds-header__tag {
+  margin-left: auto;
-    display: none;
+  display: flex;
-  }
+  gap: var(--spacing-06);
+}
+.cds-header__nav a {
+  color: var(--shell-text-secondary);
+  font-size: 0.875rem;
+  text-decoration: none;
+  border: 0;
+  padding-block: var(--spacing-02);
+}
+.cds-header__nav a:hover {
+  color: var(--shell-text);
 }
 
 /* ------------------------------------------------------------------ *\
@@ -527,6 +537,193 @@ code {
   color: var(--text-primary);
 }
 
+/* the poke — the shareable one-liner under the title */
+.sin__poke {
+  font-size: 1.375rem;
+  line-height: 1.35;
+  font-weight: 300;
+  color: var(--text-primary);
+  max-width: 42rem;
+  margin: var(--spacing-05) 0 0;
+}
+.compare__note {
+  margin: calc(-1 * var(--spacing-05)) 0 0;
+  font-family: var(--font-mono);
+  font-size: 0.8125rem;
+  color: var(--text-helper);
+}
+
+/* the receipts — citations block */
+.receipts {
+  margin-top: var(--spacing-09);
+  padding-top: var(--spacing-07);
+  border-top: 1px solid var(--border-subtle);
+}
+.receipts__title {
+  font-size: 1.5rem;
+  font-weight: 400;
+  margin: 0;
+  letter-spacing: -0.01em;
+}
+.receipts__lede {
+  color: var(--text-secondary);
+  margin: var(--spacing-03) 0 var(--spacing-06);
+}
+.receipts__list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: grid;
+  gap: 1px;
+  background: var(--border-subtle);
+  border: 1px solid var(--border-subtle);
+}
+.receipt {
+  background: var(--layer-01);
+  padding: var(--spacing-05) var(--spacing-06);
+}
+.receipt__cite {
+  display: flex;
+  align-items: baseline;
+  flex-wrap: wrap;
+  gap: var(--spacing-03);
+}
+.receipt__work {
+  font-weight: 600;
+  color: var(--text-primary);
+}
+a.receipt__work {
+  color: var(--link-primary);
+}
+.receipt__kind {
+  font-family: var(--font-mono);
+  font-size: 0.6875rem;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: var(--text-helper);
+  border: 1px solid var(--border-subtle);
+  padding: 0 var(--spacing-02);
+}
+.receipt__free {
+  font-family: var(--font-mono);
+  font-size: 0.6875rem;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: var(--support-success);
+}
+.receipt__note {
+  margin: var(--spacing-03) 0 0;
+  color: var(--text-secondary);
+  font-size: 0.9375rem;
+  line-height: 1.5;
+}
+
+/* the share box */
+.share {
+  margin-top: var(--spacing-08);
+  padding: var(--spacing-06);
+  background: var(--layer-01);
+  border: 1px solid var(--border-subtle);
+  border-left: 3px solid var(--interactive);
+}
+.share__prompt {
+  margin: 0 0 var(--spacing-04);
+  font-weight: 600;
+}
+.share__row {
+  display: flex;
+  gap: 0;
+  max-width: 34rem;
+}
+.share__url {
+  flex: 1;
+  min-width: 0;
+  font-family: var(--font-mono);
+  font-size: 0.8125rem;
+  padding: var(--spacing-04) var(--spacing-05);
+  background: var(--background);
+  color: var(--text-secondary);
+  border: 1px solid var(--border-strong);
+  border-right: 0;
+}
+.share__url:focus-visible {
+  outline: 2px solid var(--focus);
+  outline-offset: -2px;
+}
+.share__btn {
+  flex: 0 0 auto;
+  font-family: var(--font-sans);
+  font-size: 0.875rem;
+  font-weight: 600;
+  color: var(--text-on-color);
+  background: var(--interactive);
+  border: 1px solid var(--interactive);
+  padding-inline: var(--spacing-05);
+  cursor: pointer;
+  transition: background var(--dur-fast) var(--ease-productive);
+}
+.share__btn:hover {
+  background: var(--link-hover);
+}
+.share__btn.is-copied {
+  background: var(--support-success);
+  border-color: var(--support-success);
+}
+
+.more-canon {
+  margin-top: var(--spacing-07);
+  font-family: var(--font-mono);
+  font-size: 0.875rem;
+}
+
+/* canon page */
+.canon {
+  padding-block: var(--spacing-08) var(--spacing-10);
+}
+.canon__group {
+  margin-bottom: var(--spacing-09);
+}
+.canon__heading {
+  margin: 0;
+}
+.canon__list {
+  list-style: none;
+  margin: var(--spacing-05) 0 0;
+  padding: 0;
+  display: grid;
+  gap: 1px;
+  background: var(--border-subtle);
+  border: 1px solid var(--border-subtle);
+}
+.canon__item {
+  background: var(--layer-01);
+  padding: var(--spacing-05) var(--spacing-06);
+}
+.canon__cite {
+  display: flex;
+  align-items: baseline;
+  flex-wrap: wrap;
+  gap: var(--spacing-03);
+}
+.canon__work {
+  font-weight: 600;
+  font-size: 1.0625rem;
+  color: var(--text-primary);
+}
+a.canon__work {
+  color: var(--link-primary);
+}
+.canon__pub {
+  font-size: 0.8125rem;
+  color: var(--text-helper);
+}
+.canon__blurb {
+  margin: var(--spacing-03) 0 0;
+  color: var(--text-secondary);
+  max-width: 44rem;
+  line-height: 1.5;
+}
+
 /* ------------------------------------------------------------------ *\
    Footer + colophon
 \* ------------------------------------------------------------------ */