diff --git a/packages/preview/measured-jair/0.1.0/LICENSE b/packages/preview/measured-jair/0.1.0/LICENSE
new file mode 100644
index 0000000000..df92f3659b
--- /dev/null
+++ b/packages/preview/measured-jair/0.1.0/LICENSE
@@ -0,0 +1,49 @@
+This package is licensed under the MIT License, except for the contents of
+the `template/` directory, which are licensed under the MIT No Attribution
+License (MIT-0) so that documents created from the template can be modified
+and distributed without restriction.
+
+--------------------------------------------------------------------------
+MIT License (applies to lib.typ, README.md, typst.toml and thumbnail.png)
+--------------------------------------------------------------------------
+
+Copyright (c) 2026 Kirill Groshenkov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------
+MIT No Attribution (applies to everything under template/)
+--------------------------------------------------------------------------
+
+Copyright (c) 2026 Kirill Groshenkov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/packages/preview/measured-jair/0.1.0/README.md b/packages/preview/measured-jair/0.1.0/README.md
new file mode 100644
index 0000000000..4cb36db7ba
--- /dev/null
+++ b/packages/preview/measured-jair/0.1.0/README.md
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+# measured-jair
+
+A Typst template for the **Journal of Artificial Intelligence Research (JAIR)**.
+
+JAIR ships a LaTeX-only author kit. This package reproduces that layout in
+Typst so you can draft and submit in Typst — JAIR accepts submissions as PDF —
+without hand-porting a LaTeX class.
+
+It is called *measured* because every dimension in it was measured on PDFs
+compiled with the real `jair.cls`, not copied from the class by eye. This is a
+community port, not an official JAIR package.
+
+```sh
+typst init @preview/measured-jair:0.1.0
+```
+
+## Provenance
+
+The template follows `jair.cls` (2025/08/15), the class JAIR adopted for volume
+83 onward. `jair.cls` loads `acmart` with `[acmlarge, natbib=false, screen]`,
+and acmart in turn loads **`amsart`** at 10pt — *not* `article`. That matters:
+amsart's size ladder differs from the familiar one at every step, so a template
+built on `article`'s sizes is wrong everywhere.
+
+Every value below was read out of the class files and then **verified by
+measuring compiled reference PDFs** — the sample in the JAIR Author Kit and a
+second document compiled with `jair.cls` on an unfilled page, so that TeX's
+stretchable glue sits at its natural size. Positions were taken from the
+glyph outlines of a 600 dpi render, so they do not depend on font metrics.
+
+### Type
+
+| Element | LaTeX | amsart 10pt | Reference | Template |
+| --- | --- | --- | --- | --- |
+| Body | `\normalsize` | 10 / 12 | 9.96, b2b 11.95 | 9.96, b2b 11.95 |
+| Abstract | `\small` | 9 / 11 | 8.97 | 8.97 |
+| Sections and subsections | `\large` | 10.95 / 13 | 10.91 | 10.91 |
+| Author names | `\Large` | 12 / 14 | 11.96 | 11.96 |
+| Title | `\LARGE` | 14.4 / 17 | 14.35 | 14.35 |
+| Head, foot, footnotes | `\footnotesize` | 8 / 10 | 7.97 | 7.97 |
+| Line numbers (`review`) | `\scriptsize` | 7 / 8 | 6.97 | 6.97 |
+
+jair.cls overrides both `\@secfont` and `\@subsecfont`, so sections and
+subsections share one size — unlike stock acmart. Levels 3 and 4 use the
+class's run-in faces (sans italic and serif italic, each with a trailing
+period); see Known deviations for how far the run-in behavior is reproduced.
+
+### Layout
+
+acmart's dimensions are TeX points (1/72.27 in); Typst's `pt` is the big point
+(1/72 in), so every copied value is scaled by 72/72.27. `includeheadfoot` means
+the 78pt/114pt margins bound header + text + foot, not the text alone: the 13pt
+head and 14pt headsep come out of the top margin.
+
+| Element | Reference | Template |
+| --- | --- | --- |
+| Page | 612 × 792, two-sided, one column | ✓ |
+| Text left edge | 80.7 | 80.7 |
+| Running head | 79.70 | 79.70 |
+| First body line | 106.93 | 106.86 |
+| Title | 103.57 | 103.44 |
+| Running foot | 670.35 | 670.37 |
+| Line numbers (`review`) | x 54.6, pure red, none on p.1 | x 54.6, pure red, none on the p.1 title block |
+| Running-head separator | 7.97 each side of the bullet | 7.97 |
+| First-page footnote block | flush at the text edge | flush |
+
+### Vertical spacing
+
+Typst has no stretchable glue and gives text lines a fixed 1em box, so the
+class values cannot be copied directly. Each transition below was fitted so
+that the ink-to-ink distance matches a `jair.cls` document on an unfilled page.
+
+| Transition | Class value | Reference | Template |
+| --- | --- | --- | --- |
+| Text → display equation | `0.35\baselineskip` plus stretch | 6.1–6.7 | 6.2 |
+| Display equation → text | same | 6.1–6.8 | 6.7 |
+| Text → figure | `\intextsep` 12pt | 12.1 | 12.1 |
+| Figure → caption | `\abovecaptionskip` 10pt | 13.3 | 13.4 |
+| Figure caption → text | | 15.8 | 16.1 |
+| Table caption → top rule | | 13.2 | 12.7 |
+| Table rule → row → rule | booktabs | 4.7 / 5.3 / 4.9 / 5.4 | 4.1 / 5.9 / 4.7 / 5.6 |
+| Subsection → level-3 heading | `-.5\baselineskip` | 7.8 | 7.8 |
+| Text → level-4 heading | `-.5\baselineskip` | 8.5 | 8.5 |
+| Text → list | `\topsep` = `\smallskipamount` | 4.8 | 4.9 |
+| Last author → abstract | | 9.2 | 9.5 |
+| Abstract and JAIR blocks | `\medskip` | 7.1 / 7.2 | 6.8 / 7.2 |
+| JAIR reference format → first heading | `\bigskip` merged with the section skip | 12.4 | 12.4 |
+
+The baseline grid is pinned with `top-edge`/`bottom-edge` rather than left to
+font metrics, so spacing holds at amsart's values whichever font resolves —
+checked to give the same grid with Linux Libertine and Libertinus Serif. That
+matters on the Typst web app, where the font set differs.
+
+## Usage
+
+```typ
+#import "@preview/measured-jair:0.1.0": jair, toprule, midrule, botrule
+
+#show: jair.with(
+  title: "Your Article Title",
+  short-title: "Short Title",              // running head
+  authors: (
+    (
+      name: "Ada Lovelace",
+      affiliation: "Analytical Engine Institute, United Kingdom",
+      contact-affiliation: "Analytical Engine Institute, London, United Kingdom",
+      email: "ada@example.org",
+      orcid: "0000-0000-0000-0000",
+      corresponding: true,
+    ),
+  ),
+  short-authors: "Lovelace",               // running head
+  abstract: [Your abstract. JAIR prints it with no "Abstract" heading.],
+  track: "Insert JAIR Track Name Here",    // omit unless in a special track
+  associate-editor: "Insert JAIR AE Name",
+  volume: "83", article: "1",
+  pubdate: "August 2025", year: "2025",
+  doi: "10.1613/jair.1.xxxxx",
+  review: true,                            // line numbers, as the JAIR example does
+  received: "Received 20 February 2007; accepted 5 June 2009",
+  acknowledgements: [Thanks to ...],
+  bibliography: bibliography("refs.bib", title: [References],
+                             style: "american-psychological-association"),
+  appendix: [ = Supplementary material ],
+)
+
+= Introduction
+...
+
+#figure(
+  table(columns: 2, toprule, table.header[*A*][*B*], midrule, [1], [2], botrule),
+  caption: [Tables are captioned above.],
+)
+```
+
+### Parameters
+
+| Parameter | Default | Purpose |
+| --- | --- | --- |
+| `title` | required | Article title; used in the running head and the JAIR reference format. |
+| `short-title` | `title` | Running-head form of the title. Give one whenever the title is longer than a line; the running head does not truncate. |
+| `authors` | `()` | Array of dictionaries. `name` (a string) is required; `affiliation`, `email`, `orcid`, `corresponding` and `contact-affiliation` (the longer form printed in the contact footnote) are optional. |
+| `short-authors` | derived | Running-head author list. acmart's default is the full names — "A", "A and B", "A, B, and C" — and that is what the template derives; the JAIR sample overrides it with surnames, so pass e.g. `"Xu, Hutter, Hoos & Leyton-Brown"` for that look. |
+| `abstract` | `none` | Printed in `\small` with no heading. |
+| `track` | `none` | JAIR Track line; printed only when given. |
+| `associate-editor` | `"Insert JAIR AE Name"` | JAIR Associate Editor line. Printed unconditionally, as jair.cls does; replace the placeholder. |
+| `volume`, `article` | `"1"`, `"1"` | Running head/foot and the reference format. Placeholders until the journal assigns them. |
+| `pubdate`, `year` | `none` | Publication month and year for the foot, the reference format and the copyright line. Each is omitted from the output while `none`. |
+| `doi` | `none` | Printed in the reference format and the license notice when given. |
+| `received` | `none` | Printed in `\small` at the end, e.g. "Received … ; accepted …". |
+| `acknowledgements` | `none` | Unnumbered section before the references. |
+| `appendix` | `none` | Set after the references, headings lettered. |
+| `copyright-holder` | `none` | Replaces "Copyright held by the owner/author(s)." with "*holder*." |
+| `review` | `false` | Line numbers restarting on every page, like `\documentclass[review]{jair}`. |
+| `anonymous` | `false` | One "ANONYMOUS AUTHOR(S)" line, no contact footnote, "Anonymous" in the running head. JAIR does not use blind review; for preprints or other venues. |
+| `bibliography` | `none` | Pass a `bibliography(...)` call. |
+| `keywords`, `ccs` | `()`, `none` | Exist because acmart supports them. See the next section. |
+
+Headings: levels 1–3 are numbered (`1`, `1.1`, `1.1.1`), level 4 and below
+are not, matching `secnumdepth` 3. Levels 5 and 6 fall back to the level-4
+face.
+
+`toprule`, `midrule` and `botrule` are the booktabs rules acmart loads:
+0.08em heavy for the top and bottom, 0.05em light in between.
+
+### CCS concepts and keywords
+
+**JAIR's own kit says: "Do not include ACM CCS Concepts or Keywords."** The
+`ccs` and `keywords` parameters exist because acmart supports them, and are
+left unset in the shipped example. Do not use them for a JAIR submission.
+
+## Citation style
+
+JAIR uses author–year citations (`acmauthoryear` in the LaTeX kit). Typst has
+no bundled ACM author–year CSL, so the example uses
+`american-psychological-association`, which is close but not identical. For an
+exact match, put an ACM author–year CSL file beside your document and pass it
+as `style: "acm-author-year.csl"`.
+
+## Fonts
+
+acmart sets JAIR in Linux Libertine, with Linux Biolinum for sans-serif and
+Inconsolata for monospace; math is a Libertine-matched face. The template asks
+for those first, then for Libertinus, then for TeX Gyre Heros as the sans of
+last resort.
+
+Typst's compiler embeds Libertinus Serif, New Computer Modern with its math
+face and DejaVu Sans Mono, but **no sans-serif family**. Without one, the
+title, byline, headings, running heads and captions silently fall back to the
+serif. On a TeX Live machine Linux Biolinum O is present. In the Typst web app
+check the font list of your project; if no Biolinum, Libertinus Sans or TeX
+Gyre Heros is offered, upload the Linux Biolinum O files (they are free) to
+the project.
+
+Typst warns once per use about each family it cannot find; the warnings are
+harmless as long as one family per list resolves.
+
+## Known deviations
+
+Stated plainly, because this is a reimplementation and not the class itself:
+
+- **Not byte-identical.** TeX and Typst break lines and hyphenate differently,
+  so text will not fall identically even where every dimension matches.
+- **No glue.** acmlarge pages are flush-bottom and stretch the space around
+  displays, floats and headings to fill each page; Typst pages are
+  ragged-bottom and use the fitted natural values above.
+- **Run-in headings.** acmart makes levels 3 and 4 run-in: the heading sits on
+  the same line as the paragraph that follows it. Typst always starts a new
+  paragraph after a heading, so the face, the trailing period and the space
+  above are matched but the text begins on the next line.
+- **Consecutive lists.** LaTeX puts two `\topsep`s between a list that directly
+  follows another; Typst collapses them to one, so that gap is about 2pt
+  tighter than in the class.
+- **Footnote rules.** acmart draws a full-width rule above the first-page
+  contact/copyright block and a 4pc rule above ordinary footnotes. Typst has
+  one footnote separator per document, so the 4pc rule is used throughout.
+- **CC BY badge** is drawn as a boxed "CC BY" rather than the official 88×31
+  image, to keep the package free of binary assets.
+- **Line numbers.** acmart's `review` option draws a fixed ruler in the margin,
+  numbering 12pt slots regardless of where text actually falls; Typst numbers
+  real lines. Color (pure red), size, left alignment, margin position and
+  restart on every page match; the numbers correspond to lines rather than
+  slots. acmart shows no ruler on page 1; here the title block carries no
+  numbers but body lines that start on page 1 do. Hiding them would need a
+  per-line `context` lookup of the page counter, which keeps documents of a
+  few dozen pages from converging.
+- **Author grouping.** acmart can put several authors sharing an affiliation on
+  one byline row; here every author gets a line of their own, which is what jair.cls's
+  `\@mkauthors@i` does for the journal formats anyway.
+- **Theorem environments** are not styled to acmart's `acmplain`/`acmdefinition`.
+- **Teaser figures, subtitles and `\titlenote`/`\authornote`** are not
+  implemented; the only note mechanism is the corresponding-author asterisk.
+
+## Before you submit
+
+- JAIR accepts **PDF only** at submission; the LaTeX class is used to produce
+  the published version. Confirm with the editors if you intend to stay in
+  Typst through acceptance.
+- Fill in the JAIR associate editor and replace the placeholder DOI.
+- JAIR asks authors to be concise but sets no page limit.
+
+## License
+
+MIT for the package (`lib.typ` and the documentation); MIT-0 for everything
+under `template/`, so a document started from the template carries no
+attribution obligation. Both texts are in `LICENSE`. The layout parameters are
+derived from `jair.cls` and `acmart.cls`, both distributed under the LaTeX
+Project Public License; no code from either is included.
diff --git a/packages/preview/measured-jair/0.1.0/lib.typ b/packages/preview/measured-jair/0.1.0/lib.typ
new file mode 100644
index 0000000000..dde3e33d6d
--- /dev/null
+++ b/packages/preview/measured-jair/0.1.0/lib.typ
@@ -0,0 +1,450 @@
+// measured-jair — a Typst template for the Journal of Artificial Intelligence Research
+//
+// Reproduces the layout of `jair.cls` (2025/08/15), the class JAIR adopted for
+// volume 83 onward. jair.cls loads `acmart` with [acmlarge, natbib=false,
+// screen], and acmart in turn loads *amsart* at 10pt -- not `article` -- so the
+// size ladder below is amsart's, which differs from the familiar one at every
+// step. All dimensions were read from the class files and then verified by
+// measuring the compiled reference PDF character by character.
+//
+// acmart's dimensions are TeX points (1/72.27in); Typst's `pt` is the big point
+// (1/72in). Every copied value is scaled by 72/72.27.
+//
+// Licensed under the MIT License.
+
+// acmart's faces first, then fallbacks. Typst's compiler embeds Libertinus
+// Serif, New Computer Modern (+ Math) and DejaVu Sans Mono but no sans-serif
+// at all, so a sans must come from the system or the project; TeX Gyre Heros
+// is the last resort because the web app ships the TeX Gyre family. Typst
+// warns once per use for every family it cannot find, so the lists are short.
+#let _serif = ("Linux Libertine O", "Libertinus Serif")
+#let _sans = ("Linux Biolinum O", "Libertinus Sans", "TeX Gyre Heros")
+#let _mono = ("Inconsolata", "DejaVu Sans Mono")
+#let _math = ("Libertinus Math", "New Computer Modern Math")
+
+// amsart 10pt \@typesizes: (size, baselineskip), in TeX pt.
+#let _tex = 72 / 72.27
+#let _normalsize = 10pt * _tex // 10/12
+#let _small = 9pt * _tex // 9/11
+#let _footnotesize = 8pt * _tex // 8/10
+#let _scriptsize = 7pt * _tex // 7/8
+#let _large = 10.95pt * _tex // 10.95/13 — section headings (jair.cls @secfont)
+#let _Large = 12pt * _tex // 12/14     — author names
+#let _LARGE = 14.4pt * _tex // 14.4/17  — title
+
+// Typst's `leading` is the gap between lines; LaTeX's \baselineskip is measured
+// baseline to baseline. Pinning top-edge/bottom-edge to a 1em box makes the
+// conversion exact and independent of which font actually resolves, so the
+// baseline grid survives a font substitution on the Typst web app.
+#let _lead(baselineskip, size) = baselineskip * _tex - size
+
+#let _cc-badge = box(
+  stroke: 0.6pt + rgb("#333"),
+  radius: 2pt,
+  inset: (x: 3pt, y: 1pt),
+  text(size: 6.5pt, weight: "bold", font: _sans)[CC BY],
+)
+
+/// booktabs rules, as acmart loads booktabs: \toprule and \bottomrule are
+/// 0.08em heavy, \midrule is 0.05em light. Use them inside `table(...)`.
+#let toprule = table.hline(stroke: 0.08em)
+#let midrule = table.hline(stroke: 0.05em)
+#let botrule = table.hline(stroke: 0.08em)
+
+/// The JAIR article template.
+///
+/// JAIR's own kit states: "Do not include ACM CCS Concepts or Keywords." The
+/// `ccs` and `keywords` parameters exist because acmart supports them, but
+/// leave them unset for a JAIR submission.
+///
+/// - title: the article title.
+/// - short-title: running-head form of the title (`\title[short]{...}`).
+/// - authors: array of dictionaries with `name` and `affiliation`, optionally
+///   `email`, `orcid`, `corresponding`, and `contact-affiliation` for the
+///   longer form the class prints in the contact footnote.
+/// - short-authors: running-head form of the author list.
+/// - abstract: printed in \small with no heading, as JAIR does.
+/// - track, associate-editor: the JAIR metadata block.
+/// - volume, article, pubdate, year, doi: running head/foot and the JAIR
+///   reference format string.
+/// - received: e.g. "Received 20 February 2007; accepted 5 June 2009".
+/// - acknowledgements: unnumbered section before the references.
+/// - appendix: content set after the references, with lettered headings.
+/// - review: adds line numbers, like `\documentclass[review]{jair}`. The
+///   official JAIR example is compiled with this option.
+/// - anonymous: strips author identity. JAIR does not use blind review; the
+///   switch is for preprints and other venues.
+#let jair(
+  title: none,
+  short-title: none,
+  authors: (),
+  short-authors: none,
+  abstract: none,
+  keywords: (),
+  ccs: none,
+  track: none,
+  associate-editor: "Insert JAIR AE Name",
+  volume: "1",
+  article: "1",
+  pubdate: none,
+  year: none,
+  doi: none,
+  received: none,
+  acknowledgements: none,
+  appendix: none,
+  copyright-holder: none,
+  review: false,
+  anonymous: false,
+  bibliography: none,
+  body,
+) = {
+  let journal = "Journal of Artificial Intelligence Research"
+
+  assert(
+    type(authors) == array,
+    message: "`authors` must be an array of dictionaries, got " + str(type(authors)),
+  )
+  for a in authors {
+    assert(
+      type(a) == dictionary and "name" in a and type(a.name) == str,
+      message: "each entry of `authors` must be a dictionary with a `name` string, got " + repr(a),
+    )
+  }
+  // 3. a title is needed for the running head and the reference format
+  assert(title != none, message: "`title` is required")
+
+  set document(
+    title: title,
+    author: if anonymous { () } else { authors.map(a => a.name) },
+  )
+
+  // acmart builds \shortauthors from the full author names joined by
+  // \andify: "A", "A and B", "A, B, and C". The sample overrides it with
+  // surnames; pass `short-authors` to do the same.
+  let short-auth = if anonymous { "Anonymous" } else if short-authors != none {
+    short-authors
+  } else {
+    let names = authors.map(a => a.name)
+    if names.len() == 0 { "" } else if names.len() == 1 { names.first() } else if names.len() == 2 {
+      names.join(" and ")
+    } else { names.slice(0, -1).join(", ") + ", and " + names.last() }
+  }
+  let short-tit = if short-title != none { short-title } else { title }
+
+  // acmlarge asks for top=78pt, bottom=114pt (TeX pt) with `includeheadfoot`,
+  // so those margins bound header + text + foot and the 13pt head and 14pt
+  // headsep come out of the top one. The values below are what that works
+  // out to, measured on the reference: head at y=79.1/79.7, first body line
+  // 106.93, last 654.72, foot 670.35.
+  set page(
+    width: 8.5in,
+    height: 11in,
+    margin: (inside: 80.7pt, outside: 80.7pt, top: 106.9pt, bottom: 138pt),
+    binding: left,
+    header-ascent: 19.2pt,
+    footer-descent: 16.4pt,
+    header: context {
+      let n = counter(page).get().first()
+      if n == 1 { return }
+      set text(font: _sans, size: _footnotesize)
+      let folio = [#article:#n]
+      if calc.odd(n) {
+        align(right)[#short-tit#h(1em)#sym.bullet#h(1em)#folio]
+      } else if short-auth == "" {
+        align(left, folio)
+      } else {
+        align(left)[#folio#h(1em)#sym.bullet#h(1em)#short-auth]
+      }
+    },
+    footer: context {
+      let n = counter(page).get().first()
+      let l = text(size: _footnotesize)[
+        #journal, Vol. #volume, Article #article.
+        #if pubdate != none [Publication date: #pubdate.]
+      ]
+      if calc.odd(n) { align(right, l) } else { align(left, l) }
+    },
+  )
+
+  // \documentclass[review] turns on lineno at \scriptsize. A `set` inside an
+  // `if` block would only apply within that block, so the switch lives in the
+  // argument. The reference prints them at x=54.6 on both odd and even pages.
+  // The callback deliberately uses no `context`: a per-line introspection of
+  // the page counter keeps a long document from converging ("layout did not
+  // converge within 5 attempts"). The title block below opts out of the
+  // numbers instead; body lines on page 1 are numbered, which acmart's
+  // ruler does not do (see README).
+  set par.line(
+    numbering: if review {
+      n => text(size: _scriptsize, font: _serif, fill: rgb(255, 0, 0), str(n))
+    } else { none },
+    number-align: left,
+    number-margin: left,
+    number-clearance: 19.6pt,
+    numbering-scope: "page",
+  )
+
+  set text(font: _serif, size: _normalsize, lang: "en", top-edge: 0.75em, bottom-edge: -0.25em)
+  // acmart: \parindent 10pt, \parskip 0pt, so paragraph spacing == leading.
+  set par(
+    justify: true,
+    leading: _lead(12pt, _normalsize),
+    spacing: _lead(12pt, _normalsize),
+    first-line-indent: 10pt * _tex,
+  )
+  // Typst sets raw at 0.8em; \texttt runs at the surrounding size, so undo it.
+  show raw: set text(font: _mono, size: 1.25em)
+  show math.equation: set text(font: _math)
+  set math.equation(numbering: "(1)")
+  // Paragraph spacing equals the leading (about 2pt), and blocks inherit it,
+  // so displays and floats need their own. amsart sets \abovedisplayskip =
+  // \belowdisplayskip = 0.35\baselineskip plus 0.35\baselineskip (4.2pt) and
+  // \intextsep = 12pt plus 6pt minus 4pt. Typst has no glue, so the values
+  // below were fitted to a jair.cls document compiled on an unfilled page:
+  // ink-to-ink gaps of 6.1-6.8pt around displays, 12.1pt above a figure,
+  // 15.8pt from its caption to the next line.
+  show math.equation.where(block: true): set block(above: 6.2pt, below: 6.2pt)
+  show figure: set block(above: 12pt * _tex, below: 15.4pt)
+
+  // The `screen` option: ACMPurple for internal links and citations,
+  // ACMDarkBlue for URLs.
+  show link: set text(fill: cmyk(100%, 58%, 0%, 21%))
+  show ref: set text(fill: cmyk(55%, 100%, 0%, 15%))
+  show cite: set text(fill: cmyk(55%, 100%, 0%, 15%))
+
+  // secnumdepth is 3, so levels 1-3 are numbered. \@seccntformat appends
+  // \quad after the number; that quad is added by the show rules below rather
+  // than by the numbering itself, so `@label` references stay clean.
+  set heading(numbering: "1.1.1")
+  show heading.where(level: 4): set heading(numbering: none)
+  show heading.where(level: 5): set heading(numbering: none)
+  show heading.where(level: 6): set heading(numbering: none)
+  show heading: set par(justify: false, first-line-indent: 0pt, leading: _lead(13pt, _large))
+  let _number(it) = if it.numbering != none {
+    counter(heading).display(it.numbering)
+    h(1em)
+  }
+  // jair.cls overrides \@secfont AND \@subsecfont to the same thing, so levels
+  // 1 and 2 share one size, unlike stock acmart. The block spacing is
+  // \vskip .75\baselineskip / .25\baselineskip *plus* the interline glue that
+  // Typst's edge-to-edge text boxes do not contribute.
+  let _section(it) = block(above: 11.3pt, below: 4.7pt, width: 100%, sticky: true, {
+    set text(font: _sans, weight: "bold", size: _large)
+    _number(it)
+    it.body
+  })
+  show heading.where(level: 1): _section
+  show heading.where(level: 2): _section
+  // Levels 3 and 4 are run-in in acmart: \@subsubsecfont is \sffamily\itshape
+  // and \@parfont is \itshape, both with a dot after and a negative afterskip
+  // followed by \hskip 3.5pt. Typst starts a new paragraph after any heading,
+  // so the text cannot join the same line; the fonts, the trailing period and
+  // the -.5\baselineskip beforeskip are matched, and the difference is stated
+  // in the README. Levels 5 and 6 fall back to the level-4 face.
+  show heading.where(level: 3): it => block(above: 4.8pt, below: 0pt, sticky: true, {
+    set text(font: _sans, style: "italic", weight: "regular", size: _normalsize)
+    _number(it)
+    it.body
+    [.]
+  })
+  let _paragraph(it) = block(above: 7.9pt, below: 0pt, sticky: true, {
+    h(10pt * _tex)
+    set text(style: "italic", weight: "regular", size: _normalsize)
+    it.body
+    [.]
+  })
+  show heading.where(level: 4): _paragraph
+  show heading.where(level: 5): _paragraph
+  show heading.where(level: 6): _paragraph
+
+  // \abovecaptionskip 10pt; measured 13.3pt ink-to-ink from a figure to its
+  // caption and from a table caption to the rule below it.
+  set figure(gap: 13pt)
+  show figure.caption: set text(font: _sans, size: _small)
+  set figure.caption(separator: [. ])
+  show figure.where(kind: image): set figure(supplement: [Fig.])
+  show figure.where(kind: table): set figure.caption(position: top)
+  // Row pitch of a booktabs table in the reference is 17.3pt at 10pt, which
+  // Typst reaches with a 3.6pt vertical inset.
+  set table(stroke: none, inset: (x: 5pt, y: 3.6pt))
+
+  // acmart list geometry: \labelsep 4pt, label width 6.5pt.
+  // Measured on the reference: marker at margin+20.2, body at margin+30.1.
+  // `body-indent` is measured from the end of the marker, hence the smaller
+  // value. acmlarge inherits amsart's "(1)" enumerator.
+  set list(indent: 20.2pt, body-indent: 6.4pt)
+  set enum(indent: 20.2pt, body-indent: 6.4pt, numbering: "(1)")
+  set terms(indent: 20.2pt, separator: h(6.4pt))
+
+  show std.bibliography: set heading(numbering: none)
+  // Ordinary footnotes use acmart's 4pc rule.
+  set footnote.entry(separator: line(length: 48pt * _tex, stroke: 0.4pt), indent: 0pt)
+  show footnote.entry: set text(size: _footnotesize)
+  show footnote.entry: set par(leading: _lead(10pt, _footnotesize))
+
+  // --- Title block ---------------------------------------------------------
+  // LaTeX puts the first baseline \topskip below the text-block top, so the
+  // title's larger face starts 3.4pt higher than a 10pt body line would.
+  // acmart's review ruler is absent from page 1; the topmatter is excluded
+  // from the line numbers here.
+  set par.line(numbering: none)
+  v(-3.4pt)
+  block(width: 100%, {
+    set par(justify: false, first-line-indent: 0pt, leading: _lead(17pt, _LARGE))
+    text(font: _sans, weight: "bold", size: _LARGE, title)
+    v(6.3pt)
+
+    // jair.cls \@mkauthors@i: one author per line, NAME in caps, affiliation
+    // inline after a comma.
+    if anonymous {
+      block(spacing: 2pt, text(font: _sans, size: _Large, upper("Anonymous Author(s)")))
+    } else {
+      for a in authors {
+        block(spacing: 2pt, {
+          text(font: _sans, size: _Large, upper(a.name))
+          if a.at("corresponding", default: false) {
+            text(size: 8.8pt, baseline: -2pt, "*")
+          }
+          if a.at("affiliation", default: none) != none {
+            text(font: _sans, size: _Large)[,]
+            text(size: _normalsize)[ #a.affiliation]
+          }
+        })
+      }
+    }
+  })
+
+  v(6.4pt)
+
+  // \@mkabstract sets the abstract in \small with no heading.
+  if abstract != none {
+    block(width: 100%, {
+      set text(size: _small)
+      set par(
+        leading: _lead(11pt, _small),
+        spacing: _lead(11pt, _small),
+        first-line-indent: 0pt,
+      )
+      abstract
+    })
+  }
+
+  // \@specialsection prints these labels unbolded, unlike the JAIR blocks.
+  // JAIR asks authors not to use them at all. The \medskip between the blocks
+  // measures 7.1pt ink-to-ink on the reference; 4.2pt of block spacing gives
+  // the same on top of the 1em text boxes.
+  let _medskip = 4.2pt
+  if ccs != none {
+    v(_medskip)
+    block(text(size: _small)[CCS Concepts: #ccs])
+  }
+  if keywords.len() > 0 {
+    v(_medskip)
+    block(text(size: _small)[Additional Key Words and Phrases: #keywords.join(", ")])
+  }
+
+  // --- JAIR metadata block, separated by \medskip ---------------------------
+  if track != none {
+    v(_medskip)
+    block(text(size: _small)[*JAIR Track:* #track])
+  }
+  v(_medskip)
+  block(text(size: _small)[*JAIR Associate Editor:* #associate-editor])
+
+  // The first-page footnotes (corresponding author, contact information,
+  // license) are attached to the end of this block. As separate calls each
+  // would open an empty paragraph and cost a full line above the body.
+  let first-page-notes = {
+    if not anonymous and authors.any(a => a.at("corresponding", default: false)) {
+      footnote(numbering: _ => "")[
+        #set text(size: _footnotesize)
+        \* Corresponding Author.
+      ]
+    }
+    if not anonymous {
+      let contacts = authors.map(a => {
+        let orcid = if a.at("orcid", default: none) != none {
+          [, #smallcaps("orcid:") #link("https://orcid.org/" + a.orcid)[#a.orcid]]
+        }
+        let mail = if a.at("email", default: none) != none { [, #a.email] }
+        let aff = a.at("contact-affiliation", default: a.at("affiliation", default: none))
+        [#a.name#orcid#mail#if aff != none [, #aff]]
+      })
+      if contacts.len() > 0 {
+        footnote(numbering: _ => "")[
+          #set text(size: _footnotesize)
+          #if contacts.len() > 1 [Authors'] else [Author's] Contact Information:
+          #contacts.join("; ").
+        ]
+      }
+    }
+    footnote(numbering: _ => "")[
+      #set text(size: _footnotesize)
+      #_cc-badge
+      #h(0.5em)
+      #link("https://creativecommons.org/licenses/by/4.0/")[
+        This work is licensed under a Creative Commons Attribution International 4.0 License.
+      ]
+      #linebreak()
+      ©#if year != none [ #year]
+      #if copyright-holder != none [#copyright-holder.] else [Copyright held by the owner/author(s).]
+      #if doi != none [#linebreak() #smallcaps("doi:") #link("https://doi.org/" + doi)[#doi]]
+    ]
+  }
+
+  v(_medskip)
+  block(text(size: _small)[
+    *JAIR Reference Format:* \
+    #{
+      let names = if anonymous { ("Anonymous",) } else { authors.map(a => a.name) }
+      let joined = if names.len() == 0 { "" } else if names.len() == 1 {
+        names.first()
+      } else if names.len() == 2 { names.join(" and ") } else {
+        names.slice(0, -1).join(", ") + ", and " + names.last()
+      }
+      [#joined. #if year != none [#year. ]#title. _#journal _ #volume, Article #article#if pubdate != none [ (#pubdate)], ]
+    }
+    #context {
+      let n = counter(page).final().first()
+      [#text(fill: cmyk(55%, 100%, 0%, 15%))[#n] #if n == 1 { "page" } else { "pages" }.]
+    }
+    #if doi != none [ #smallcaps("doi:") #link("https://doi.org/" + doi)[#doi]]
+    #first-page-notes
+  ])
+
+  // acmart resets the footnote counter after the topmatter, so the synthetic
+  // footnotes above do not renumber the author's first real one.
+  counter(footnote).update(0)
+
+  // \@printendtopmatter inserts \par\bigskip before the body, which
+  // \addvspace merges with the first heading's own skip. A weak skip of the
+  // same size as the heading's `above` collapses with it, so a first heading
+  // sits 12.4pt ink-to-ink below the reference-format block, as in the
+  // reference, while a body that starts with plain text gets the bigskip.
+  v(11.6pt, weak: true)
+
+  {
+    set par.line(numbering: if review {
+      n => text(size: _scriptsize, font: _serif, fill: rgb(255, 0, 0), str(n))
+    } else { none })
+    body
+  }
+
+  if acknowledgements != none {
+    heading(numbering: none, outlined: false)[Acknowledgments]
+    acknowledgements
+  }
+
+  if bibliography != none { bibliography }
+
+  if appendix != none {
+    counter(heading).update(0)
+    set heading(numbering: "A.1.1")
+    appendix
+  }
+
+  if received != none {
+    v(12pt * _tex)
+    block(text(size: _small, received))
+  }
+}
diff --git a/packages/preview/measured-jair/0.1.0/template/main.typ b/packages/preview/measured-jair/0.1.0/template/main.typ
new file mode 100644
index 0000000000..c182cdc15e
--- /dev/null
+++ b/packages/preview/measured-jair/0.1.0/template/main.typ
@@ -0,0 +1,92 @@
+#import "@preview/measured-jair:0.1.0": jair, toprule, midrule, botrule
+
+#show: jair.with(
+  title: "A Typst Template for the Journal of Artificial Intelligence Research",
+  short-title: "A Typst Template for JAIR",
+  short-authors: "Lovelace & Turing",
+  authors: (
+    (
+      name: "Ada Lovelace",
+      affiliation: "Analytical Engine Institute, United Kingdom",
+      contact-affiliation: "Analytical Engine Institute, London, United Kingdom",
+      email: "ada@example.org",
+      orcid: "0000-0000-0000-0001",
+      corresponding: true,
+    ),
+    (
+      name: "Alan Turing",
+      affiliation: "National Physical Laboratory, United Kingdom",
+      contact-affiliation: "National Physical Laboratory, Teddington, United Kingdom",
+      email: "turing@example.org",
+      orcid: "0000-0000-0000-0002",
+    ),
+  ),
+  abstract: [
+    This example exercises the template: the title block, the JAIR metadata
+    blocks, author-year citations, a numbered equation, a table and a figure,
+    a run-in third-level heading, a footnote, an appendix, and the first-page
+    contact and license notices. Replace it with your own abstract.
+  ],
+  track: "Insert JAIR Track Name Here",
+  associate-editor: "Insert JAIR AE Name",
+  volume: "83",
+  article: "1",
+  pubdate: "August 2025",
+  year: "2025",
+  doi: "10.1613/jair.1.xxxxx",
+  review: true,
+  received: "Received 20 February 2007; accepted 5 June 2009",
+  bibliography: bibliography("refs.bib", title: [References], style: "american-psychological-association"),
+  appendix: [
+    = Supplementary material
+
+    Content passed as `appendix:` is set after the reference list and its
+    headings are lettered.
+  ],
+)
+
+= Introduction
+
+This document shows the Typst port of the JAIR article style. The layout
+follows `jair.cls`, which extends ACM's `acmart` in its `acmlarge`
+configuration: US Letter, a single column of 10pt Linux Libertine, sans-serif
+headings, and a running foot naming the journal, volume and article.#footnote[
+  Body footnotes are numbered from 1; the first-page notices do not count.
+]
+
+== A subsection
+
+Cite sources in the author-year style JAIR uses @knuth1984texbook. Equations
+are numbered on the right:
+
+$ sum_(i=1)^n i = (n (n+1)) / 2 $
+
+=== A third-level heading
+
+Levels 3 and 4 use acmart's run-in faces with a trailing period. Tables take
+their captions above and figures below, as in `acmart`.
+
+#figure(
+  table(
+    columns: 3,
+    toprule,
+    table.header([*Solver*], [*Solved*], [*Mean time*]),
+    midrule,
+    [SATzilla], [1,204], [12.4 s],
+    [Baseline], [987], [31.8 s],
+    botrule,
+  ),
+  caption: [A table, captioned above the content, with booktabs rules.],
+)
+
+#figure(
+  rect(width: 60%, height: 48pt, fill: luma(235), stroke: 0.5pt)[
+    #set align(center + horizon)
+    Your figure here
+  ],
+  caption: [A figure, captioned below the content.],
+)
+
+= Conclusion
+
+Replace this file's contents with your article.
diff --git a/packages/preview/measured-jair/0.1.0/template/refs.bib b/packages/preview/measured-jair/0.1.0/template/refs.bib
new file mode 100644
index 0000000000..f4917741ee
--- /dev/null
+++ b/packages/preview/measured-jair/0.1.0/template/refs.bib
@@ -0,0 +1,6 @@
+@book{knuth1984texbook,
+  title     = {The {\TeX}book},
+  author    = {Knuth, Donald E.},
+  publisher = {Addison-Wesley},
+  year      = {1984}
+}
diff --git a/packages/preview/measured-jair/0.1.0/thumbnail.png b/packages/preview/measured-jair/0.1.0/thumbnail.png
new file mode 100644
index 0000000000..4e2f0c0fe7
Binary files /dev/null and b/packages/preview/measured-jair/0.1.0/thumbnail.png differ
diff --git a/packages/preview/measured-jair/0.1.0/typst.toml b/packages/preview/measured-jair/0.1.0/typst.toml
new file mode 100644
index 0000000000..baa1beec2f
--- /dev/null
+++ b/packages/preview/measured-jair/0.1.0/typst.toml
@@ -0,0 +1,16 @@
+[package]
+name = "measured-jair"
+version = "0.1.0"
+entrypoint = "lib.typ"
+authors = ["Kirill Groshenkov <kir.groshenkov@gmail.com>"]
+license = "MIT AND MIT-0"
+description = "Article for the Journal of Artificial Intelligence Research (JAIR)."
+repository = "https://github.com/veryviolet/jair-typst"
+keywords = ["jair", "Journal of Artificial Intelligence Research", "journal", "article", "acm", "acmart", "paper"]
+categories = ["paper"]
+compiler = "0.13.0"
+
+[template]
+path = "template"
+entrypoint = "main.typ"
+thumbnail = "thumbnail.png"