From 6907b582b03666e638c4362ffc6c3fa6fc879da5 Mon Sep 17 00:00:00 2001
From: Meta Vens <rwvens@hotmail.com>
Date: Fri, 2 Oct 2026 14:40:10 +0200
Subject: [PATCH] Thing map r4: the deck is the Thing page under the masthead;
 cut deck-site-page spec

Ruling operator-deck-is-a-site-page: the deck leaves the iframe in the
article column and becomes a page of the site, filling the screen below
the existing masthead. Body facts B12 (how the site lays a page out) and
B13 (what Quartz does to raw HTML), the shape (one copy scoped by
.thing-deck, styles and script as linked static files, applet URL kept as
a redirect), the authority map delta, question thing-page-url (top-level
recommended), and the cut spec within PipelineCutSpec bounds.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
---
 docs/thing-campaign.md              | 247 ++++++++++++++++++++++++++-
 docs/thing-cut-fullscreen.spec.json | 250 ++++++++++++++++++++++++++++
 2 files changed, 495 insertions(+), 2 deletions(-)
 create mode 100644 docs/thing-cut-fullscreen.spec.json

diff --git a/docs/thing-campaign.md b/docs/thing-campaign.md
index e593d5e..00c43b1 100644
--- a/docs/thing-campaign.md
+++ b/docs/thing-campaign.md
@@ -1,6 +1,10 @@
 # Thing: the rename of Eve, map and target
 
-Status: map, Imagination (`imagination-thing`), revision 3 of 2026-10-02.
+Status: map, Imagination (`imagination-thing`), revision 4 of 2026-10-02.
+Revision 4 adds the section "Fullscreen presentation" (ruling
+`thing:ruling:operator-deck-is-a-site-page`, question `thing-page-url`, cut
+`deck-site-page`, spec `docs/thing-cut-fullscreen.spec.json`); nothing before
+that section changed.
 Campaign slug `thing`. Rulings in force this revision rests on:
 `thing:ruling:operator-brand-reskin` (brand = re-skin, against revision 1's
 recommendation), `:operator-deck-facts-fix`, `:operator-dsl-thing-script`,
@@ -10,7 +14,8 @@ rename-now, against revision 1's recommendation), `:operator-aetheria-eve-rename
 Persona is retired and nothing replaces it; `persona-continuity` was
 withdrawn because the answer fell outside its options). The operator's words
 for the last three, verbatim: "Rename all, retire the Persona". Open:
-`aetheria-eve-contents`, `member-names` (section "Questions"). Cut 1's spec is
+`aetheria-eve-contents`, `member-names` (section "Questions"), `thing-page-url`
+(section "Fullscreen presentation"). Cut 1's spec is
 `docs/thing-cut-1.spec.json`; revision 3 proposes target r2. Questions, cut specs, rulings and
 reports become typed documents in Eureka's mind (instance `eureka`); this page
 keeps body facts, the inventory, the model page and rationale, as
@@ -1079,3 +1084,241 @@ VoidBot would otherwise recreate the Face on the next role-addressed chat
 - Renaming Yggdrasil's `/srv/repos/Eve` and `/srv/build/Eve`: deployment
   state, not a name anyone reads; an ops cut if ever wanted.
 - Renaming Epiphany's `atlas/eve_surface.rs`: Epiphany is being archived.
+- The deck as an iframe in the article column (cut 1's shape, live until cut
+  `deck-site-page`): overruled by `operator-deck-is-a-site-page`.
+- A full-bleed iframe under the masthead: the iframe becomes the scroller,
+  so the masthead never leaves the viewport and costs a phone a masthead's
+  height on every screen of the deck; two documents load for one page.
+- A fixed overlay root like the Graph viewer's: covers the masthead the
+  operator asked to present the deck with.
+- `@scope (.thing-deck)` instead of prefixed selectors: one line, but newer
+  than anything the site relies on (Firefox 128, July 2024); prefixing is
+  mechanical and Soul can grep it.
+- Inline `<style>` and `<script>` in `Thing.md`: they survive the pipeline,
+  but `Description` would index their text as the page's words (B13.4).
+- The whole-site reading of "always fullscreen" (chrome as overlays, no
+  1680px measure): dropped by the operator's clarification; prose keeps its
+  reading-width chrome.
+
+## Fullscreen presentation (revision 4)
+
+The deck went live as cut 1 shaped it: an iframe inside `.gamecult-embed-frame`
+in the article column of `/Blog/project-thing`, 85vh tall, with the applet at
+`/static/applets/project-thing/index.html`. The operator's words, verbatim:
+
+> we can also certainly do better than just embedding it in the site's body
+> chrome. Our site should always be a fullscreen experience
+
+and, asked what "always" covers:
+
+> I'm just saying, the masthead always fills the screen, and the content
+> should do the same, where reasonable. Having a body chrome that stops text
+> from taking up the full width when you're reading is just good UX. I don't
+> see why the Thing page can't be presented with the existing masthead. It's
+> the Thing page, on the GameCult site, right?
+
+Admitted as `thing:ruling:operator-deck-is-a-site-page`: the deck is a page
+of gamecult.org under the existing masthead, filling the screen below it; it
+is not an iframe in the body column. Prose pages keep their reading-width
+chrome. This is not a site redesign; the whole-site reading of "always
+fullscreen" and the `fullscreen-scope` question were dropped with the ruling.
+What this section settles is mechanism.
+
+### B12. How the site lays a page out today
+
+Pinned: gamecult-site `ae0927f1c7e2231a722007233f26847daf68f740` (the polish
+cut `cut-deck-polish` is in flight on the applet file; nothing below depends
+on that file's contents), GameCult-Quartz `ef43df0`.
+
+- The engine renders every page as `<body data-slug>` > `#quartz-root.page` >
+  `#quartz-body` with a left sidebar, `.center` (`.page-header` holding the
+  masthead and the `beforeBody` components, then `<article>`, an `<hr>`, the
+  `.page-footer`), a right sidebar and the site `Footer`
+  (`GameCult-Quartz/quartz/components/renderPage.tsx` lines 267-294).
+  `enableSPA: false` (`site/quartz.config.ts`): every navigation is a full
+  page load, there is no router, and inline or linked scripts run on load.
+- `.page` is `max-width: 1680px; padding: 0 1.2rem 2.5rem` (`custom.scss`
+  lines 31-35), so the masthead and all content share one measure; on a
+  display wider than 1680px nothing fills the screen. `.page::before` paints
+  the fixed grid texture over everything, pointer-events none (lines 37-47).
+- Sidebars are grid columns: an empty sidebar is `display: none` and the
+  grid collapses to one column (lines 50-85); the left column is the TOC
+  (desktop only), the right is the overview sidebar and backlinks. Which
+  components render is decided per page by slug predicates in
+  `site/quartz.layout.ts` (`isGraphPage`, `isIntegratedDossierPage`,
+  `isStandardContentPage`, `isBlogArticle`); Breadcrumbs, ArticleTitle and
+  ContentMeta are skipped for `index` and `Graph`.
+- The article is a card: `.page > #quartz-body .center > article` has a
+  gradient background, 1px border, 24px radius, shadow and
+  `padding: 1.45rem 1.7rem 1.9rem` (lines 1089-1099). Reading width inside it
+  comes from the page types (`.gamecult-studio-page` 72rem, Ritual Paper
+  980px, `max-width: 68ch` on some prose).
+- Nothing is full-bleed. The home page and the Projects page are studio
+  pages (72rem, right sidebar, no TOC). Ritual Paper is a typographic
+  variant inside the same grid (lines 101-630). Two pages reach for more
+  room ad hoc: `Blog/the-sleeping-colossus-refuses-the-throne` collapses the
+  grid to one column, hides both sidebars and the popover hint by slug
+  (lines 1152-1180), still inside the 1680px card; and `Graph`, whose
+  viewer bundle mounts `.gamecult-epiphany-graph-root` as
+  `position: fixed; inset: 0; z-index: 1000` and sets
+  `body.gamecult-graph-spa-active { overflow: hidden }`
+  (`GameCult/static/epiphany-graph/assets/viewer.css`), covering the masthead
+  and footer rather than removing them. That fixed root is the only visual
+  overlay on the site. Revision 3's phrase "overlay applet" meant the build
+  overlay (`site/` staged over the engine, B4), not a visual layer: the cat
+  and Thing applets are iframes in the article column.
+- The masthead (`GameCultMasthead`) is in normal flow, not sticky: title,
+  tagline, community links, nav chips. Its tagline is the page's first
+  standalone italic quote line after an optional H1, stripped from the
+  article by `stripTopTagline` (`site/quartz/components/gamecult.ts` lines
+  170-209, 486-505).
+- Embeds: `.gamecult-embed-frame` (lines 2388-2400, 2505) is used by three
+  pages (the cat post, the Thing post, `Projects/CultPong.md`); the Thing
+  post's 85vh override is the slug-scoped rule at lines 1148-1150.
+
+### B13. What Quartz does to raw HTML in a Markdown page
+
+`ObsidianFlavoredMarkdown` runs `rehype-raw` (`ofm.ts` line 544), so HTML in
+a `.md` page survives, including `<style>`, `<link>` and `<script>`
+elements, which Preact renders to static HTML and the browser executes on
+load. Four rules bite a pasted deck:
+
+1. CommonMark HTML blocks that open with `<div`/`<section` end at the first
+   blank line; text after a blank line that does not start with `<` is a
+   Markdown paragraph (`<p>` wrapping, inline parsing) and a line indented
+   four spaces after a blank line is a code block. `<style>` and `<script>`
+   blocks end at their closing tag and may contain blank lines. The deck's
+   markup (committed HEAD, lines 254-529) has 15 blank lines.
+2. `Latex` (remark-math) turns `$...$` into math outside HTML blocks; the
+   deck's markup carries no `$`.
+3. `CrawlLinks` marks `<a>` elements `internal` or `external` and appends an
+   external-link icon SVG to every external link (`links.ts` line 32,
+   `externalLinkIcon: true`); the deck has two external links in `.src`.
+4. `Description` sets `file.data.text` from the whole tree, which feeds the
+   search index and, absent a frontmatter `description`, the page
+   description and OG card; inline `<style>`/`<script>` text would be
+   indexed as page text. Linked files are not.
+
+Site styles that reach into an in-page deck (`GameCult-Quartz/quartz/styles/base.scss`):
+`a { font-weight: 600; color: var(--secondary) }` (line 84), `strong`
+(line 80), `h1`-`h6` families, sizes and margins (lines 356-420), `p, li`
+line-height (515-517), `table, th, td` (528-545), `ul` list style (37-44),
+plus the article card above. The deck's own unscoped selectors that would
+reach out: `*`, `:root`, `body`, `h1,h2,h3`, `p`, `b,strong`, `table`,
+`td`, `th`, `tr.lit td`, `tr.strike td(::after)`, `[data-reveal]`. Its 110
+class names and 14 keyframe names collide with nothing in `custom.scss` or
+`base.scss`. The script's only root touch is `document.documentElement`
+(line 532: `.rm` for reduced motion, `getComputedStyle(root)` for tokens);
+it otherwise reads `window.scrollY`, `innerHeight` and element rects, which
+hold for an in-flow deck. The HUD bar and pill are `position: fixed`.
+
+### The shape: the deck is the Thing page
+
+Under `operator-deck-is-a-site-page` the deck becomes one page of the site,
+rendered by the engine like every other page, with the masthead above it in
+flow and the deck's sections spanning the viewport below it:
+
+- **One copy, in the page.** The deck's markup is the body of a Markdown
+  page, wrapped once in `<div class="thing-deck">`, with its blank lines
+  removed (B13.1). Its styles and script are two static files the page
+  links, `site/quartz/static/thing/deck.css` and `deck.js`, not inline
+  (B13.4). The applet file is deleted; its URL becomes a redirect stub so
+  `old-names-resolve` holds.
+- **Scoped both ways by one class.** Every selector in `deck.css` is
+  prefixed `.thing-deck`; `:root` and `body` become `.thing-deck` (tokens,
+  font, size, colour; the body `background` is dropped because the site's
+  body already paints the same wash); `*` becomes `.thing-deck *`; the `.rm`
+  rules become `.thing-deck.rm ...`, and `deck.js` line 532 takes
+  `document.querySelector('.thing-deck')` as `root`, so reduced motion and
+  `tok()` both read the deck root. Site rules the deck must redeclare inside
+  its scope: `a` (weight and colour as the deck had them), `strong`,
+  headings' margins, `p` line-height, table cell padding and borders, list
+  style; and `.thing-deck .external-icon { display: none }` (B13.3).
+  Keyframe names stay (no collision).
+- **Masthead above, hero below, stacked.** The deck's hero does not
+  duplicate the masthead: the masthead is site identity and navigation, the
+  hero is the deck's cover. The hero's sticky stage sticks at `top: 0` once
+  the masthead has scrolled off, so the first viewport is masthead plus the
+  top of the hero and every later viewport is the deck alone. The masthead
+  tagline is the deck's `socialDeck` line, *"Thing renders things."*, given
+  as the page's first line and lifted into the masthead by `stripTopTagline`.
+  The HUD bar stays fixed at the top (3px, scaled to 0 at rest); the HUD pill
+  stays fixed bottom-right (top-right on phones, where it overlaps the
+  masthead's community icons until the first scroll; accepted).
+- **Page chrome on this page only**, scoped by `body[data-slug="Thing"]` in
+  `custom.scss` beside the other slug rules: `.page { max-width: none;
+  padding: 0 }` so the deck's `--inv` sections run edge to edge;
+  `.page > #quartz-body .center > .page-header { max-width: 1680px;
+  margin-inline: auto; padding: 0 1.2rem }` so the masthead keeps the measure
+  it has on every other page; the article card loses background, border,
+  radius, shadow and padding; the `<hr>` and `.page-footer` margin go. The
+  site footer follows the deck's close section. The layout predicates in
+  `quartz.layout.ts` gain `isThingPage` and skip Breadcrumbs, ArticleTitle,
+  ContentMeta, the overview sidebar and Backlinks for it, as they do for
+  `Graph`; with both sidebars empty the existing grid rules give one column.
+- **Scripts and the router.** There is no SPA router (`enableSPA: false`);
+  `deck.js` runs on every load of the page as `<script src defer>`. Nothing
+  to design.
+- **The Blog post** `/Blog/project-thing` stays as the dated news item: its
+  frontmatter unchanged, its body a paragraph and a link to the Thing page;
+  the iframe, the direct link and the slug-scoped 85vh rule go. The Eve card
+  item links to the Thing page. `.gamecult-embed-frame` stays for the cat
+  post and CultPong.
+
+Not chosen, and why (also under "Rejected"): a full-bleed iframe under the
+masthead keeps the deck untouched but makes the iframe the scroller, so the
+masthead never scrolls away and the deck loses a masthead's height of every
+phone viewport, and the page loads two documents; a fixed overlay like the
+Graph's covers the masthead the operator asked to keep; `@scope` instead of
+prefixing is one line but is newer than anything the site relies on
+(Firefox 128, 2024) and prefixing is mechanical.
+
+### Authority map delta
+
+- Owner of the deck's look: `deck.css`, scoped to `.thing-deck`; it reads no
+  site token and the site reads none of it. Owner of the page chrome on the
+  Thing page: `custom.scss` under `body[data-slug="Thing"]`, and
+  `quartz.layout.ts` for which components render. The engine owns the frame
+  (`renderPage.tsx`); it is not edited.
+- Derived, display-only: the masthead tagline (from the page's first line);
+  the one-column grid (from empty sidebars); the search-index text (from the
+  deck's copy, not its CSS or JS).
+- Forbidden writers: no site stylesheet styles anything inside
+  `.thing-deck`; no deck selector is unprefixed; no second copy of the deck
+  exists (the applet file is replaced by a stub that holds no deck markup);
+  no iframe, no fixed overlay root, no `overflow: hidden` on body.
+- Shared paths: the same Deploy Quartz workflow and Pages origin; the deck's
+  fact fixes and the polish cut's edits travel with the markup and script
+  unchanged (Soul diffs them against the polish cut's landing head).
+- Deletion line: before the page exists, the applet's `<style>`, `<body>`
+  and `<script>` are moved out and the applet file is reduced to the stub;
+  the embed and the 85vh rule are removed from the post and `custom.scss`.
+
+### Question `thing-page-url`: which URL is the Thing page?
+
+Options: **top-level** (`GameCult/Thing.md`, `/Thing`; a page of the site
+like `Pitch` or `tour`, with the masthead's tagline and no article chrome;
+`/Blog/project-thing` stays the dated announcement pointing at it; cut 4's
+Thing card links to it; the URL outlives the campaign as the family's page);
+**blog-post** (`/Blog/project-thing` is the page; `GameCultArticleMeta`,
+Breadcrumbs and ArticleTitle must be skipped for one blog slug, the Blog
+index lists a post whose body is the deck, and the family's page later
+needs another URL anyway). Recommended: **top-level**; the operator called
+it "the Thing page", and a dated post is the wrong container for a page
+meant to outlive its date. The cut spec `docs/thing-cut-fullscreen.spec.json`
+assumes top-level; under blog-post the same spec applies with
+`GameCult/Blog/project-thing.md` as the page file, `isThingPage` matching
+that slug and `isBlogArticle` excluding it.
+
+### Cut `deck-site-page` (spec `docs/thing-cut-fullscreen.spec.json`)
+
+Repo `gamecult-site`, after `cut-deck-polish` lands (the spec's base is
+`ae0927f`; Hands rebases onto the polish cut's landing head and takes the
+deck's markup, styles and script from that head, never from the artifact).
+Rulings: `operator-deck-is-a-site-page`, `operator-brand-reskin`,
+`operator-deck-facts-fix`. Question assumed: `thing-page-url = top-level`.
+Structural delta: the 680-line applet becomes a 12-line stub; about 270
+lines of markup, 250 of CSS and 150 of JS move into `GameCult/Thing.md`,
+`deck.css` and `deck.js`; about 40 lines of `custom.scss` and 8 of
+`quartz.layout.ts` are added; 3 lines of `custom.scss` and the post's embed
+are removed. No new dependency, no new format.
diff --git a/docs/thing-cut-fullscreen.spec.json b/docs/thing-cut-fullscreen.spec.json
new file mode 100644
index 0000000..86a297c
--- /dev/null
+++ b/docs/thing-cut-fullscreen.spec.json
@@ -0,0 +1,250 @@
+{
+  "campaign": "thing",
+  "cut": "deck-site-page",
+  "revision": 1,
+  "title": "The Project Thing deck becomes the Thing page on gamecult.org: under the masthead, filling the screen, one copy scoped in the page; the applet URL redirects",
+  "repo": "GameCult/gamecult-site",
+  "branch": "main",
+  "base": "ae0927f1c7e2231a722007233f26847daf68f740",
+  "depends_on": [
+    "cut-deck-on-site",
+    "cut-deck-polish"
+  ],
+  "first": [
+    "Map: Eve docs/thing-campaign.md revision 4, section 'Fullscreen presentation': B12 (site layout), B13 (what Quartz does to raw HTML), 'The shape', 'Authority map delta'. Ruling thing:ruling:operator-deck-is-a-site-page, operator's words verbatim there. This spec assumes question thing-page-url = top-level (/Thing, GameCult/Thing.md); under blog-post the page file is GameCult/Blog/project-thing.md and isThingPage matches that slug.",
+    "Base: rebase onto the landing head of cut-deck-polish before starting. The deck's markup, styles and script are taken from site/quartz/static/applets/project-thing/index.html at that head, never from the artifact. Line numbers below are the committed HEAD ae0927f: <style> lines 9-252, <body> 254-529, <script> 530-679; they shift slightly after the polish cut.",
+    "Rules of the engine (B13): a <div>/<section> HTML block in Markdown ends at the first blank line, so the deck's markup must carry no blank line between <div class=\"thing-deck\"> and its closing tag; <link> and <script src> elements in the body survive rehype-raw and run on load; CrawlLinks appends an external-link icon to every external <a>; Description indexes all article text, so styles and script are linked files, not inline.",
+    "Scoping (B13, 'The shape'): every selector in deck.css is prefixed .thing-deck; :root and body become .thing-deck; * becomes .thing-deck *; .rm rules become .thing-deck.rm ...; the script's root is document.querySelector('.thing-deck'). Site rules that reach in and must be redeclared inside the scope: a (weight, colour), strong, h1-h3 margins, p line-height, table/th/td padding and borders, ul list-style, .external-icon hidden.",
+    "There is no SPA router (enableSPA: false in site/quartz.config.ts): deck.js runs on each full load; nothing else is needed for scripts.",
+    "Deploy is push to main -> workflow 'Deploy Quartz' -> GitHub Pages at gamecult.org. Small commits on main; CI is the verifier. A local .\\scripts\\quartz\\quartz.ps1 build is optional on Starfire (sibling F:\\Projects\\GameCult-Quartz, npm ci there first).",
+    "Precedents in the code: slug predicates in site/quartz.layout.ts (isGraphPage, isIntegratedDossierPage); slug-scoped chrome rules in site/quartz/styles/custom.scss (body[data-slug=\"Blog/the-sleeping-colossus-refuses-the-throne\"], lines 1152-1180); the masthead tagline lifted from the page's first italic quote line (site/quartz/components/gamecult.ts stripTopTagline)."
+  ],
+  "deletes": [
+    {
+      "path": "site/quartz/static/applets/project-thing/index.html",
+      "lines": 668,
+      "note": "The 680-line applet becomes a 12-line redirect stub: doctype, charset, <title>Project Thing</title>, <meta http-equiv=\"refresh\" content=\"0; url=/Thing\">, <link rel=\"canonical\" href=\"https://gamecult.org/Thing\">, and a body with one link to /Thing. No deck markup, style or script remains in it (invariant old-names-resolve: the URL still answers 200)."
+    },
+    {
+      "path": "site/quartz/styles/custom.scss",
+      "lines": 3,
+      "note": "The slug-scoped rule body[data-slug=\"Blog/project-thing\"] .gamecult-embed-frame iframe { height: 85vh } (lines 1148-1150) is removed; the shared .gamecult-embed-frame rules stay for the cat post and Projects/CultPong.md."
+    },
+    {
+      "path": "GameCult/Blog/project-thing.md",
+      "lines": 9,
+      "note": "The .gamecult-embed-frame div with its iframe and the 'open the deck directly' sentence are removed from the post body; frontmatter is unchanged."
+    }
+  ],
+  "keeps_moves": [
+    "The deck's markup (between <body> and <script> at the polish cut's head) moves verbatim into GameCult/Thing.md inside one <div class=\"thing-deck\"> wrapper, with only these edits: blank lines removed, and nothing else. Every section, exhibit, number and line of copy, including cut 1's two fact fixes and the polish cut's edits, is unchanged. Soul diffs the markup against the applet at the polish head and expects only the wrapper and the removed blank lines.",
+    "The deck's <style> content moves to site/quartz/static/thing/deck.css with the scoping edits in adds and no other change: same tokens, same weights, same keyframes, same media query at 760px, same reduced-motion rules.",
+    "The deck's <script> content moves to site/quartz/static/thing/deck.js with one edit: var root=document.documentElement becomes var root=document.querySelector('.thing-deck'). Everything else (hero intro, reveals, canvases, HUD, ticker, TPS) is unchanged.",
+    "GameCult/Blog/project-thing.md keeps its frontmatter (title, description, author, date, tags, socialDeck) and its H1 and first paragraph; it stays in the Blog index as the dated announcement.",
+    "The Eve card on GameCult/Projects/index.md keeps its Project Thing list item; only its href changes.",
+    "site/quartz/components/*, GameCult-Quartz (the engine), the shared .gamecult-embed-frame rules, the cat applet and the Graph viewer are not touched."
+  ],
+  "adds": [
+    "GameCult/Thing.md: frontmatter title 'Thing'; description, one sentence: the Project Thing board deck, a discussion document on renaming Eve to Thing; socialDeck 'Thing renders things.'; enableToc: false. Body, in this order and with no blank line inside the deck block: the tagline line *\"Thing renders things.\"* (lifted into the masthead by stripTopTagline), a blank line, <link rel=\"stylesheet\" href=\"/static/thing/deck.css\">, <div class=\"thing-deck\"> ... the deck's markup ... </div>, <script src=\"/static/thing/deck.js\" defer></script>. No H1 (the deck's hero carries the h1).",
+    "site/quartz/static/thing/deck.css: the deck's stylesheet scoped. Prefix every selector with '.thing-deck ' (including those inside @media (max-width:760px)); the :root block becomes .thing-deck { ... } keeping color-scheme and every token; the body rule becomes .thing-deck { margin:0; color:var(--ink-2); font-family:var(--body); font-weight:300; font-size:18px; line-height:1.55 } with the background declaration dropped (the site body paints the same wash) and overflow-x:hidden dropped (the polish cut keeps every section inside the page); * becomes .thing-deck *; .rm X becomes .thing-deck.rm X; h1,h2,h3 / p / b,strong / table / td / th / tr.lit td / tr.strike td / [data-reveal...] are prefixed like any other selector. @keyframes names stay (no collision with custom.scss or base.scss).",
+    "site/quartz/static/thing/deck.css, reach-in guards appended at the end under the same scope: .thing-deck a { color: inherit; font-weight: inherit; text-decoration: inherit } unless the deck already styles the anchor (then that rule wins by its own specificity); .thing-deck strong, .thing-deck b { font-weight: 500 }; .thing-deck h1, .thing-deck h2, .thing-deck h3 { margin: 0 } (already present, kept); .thing-deck p { margin: 0; line-height: inherit }; .thing-deck table, .thing-deck th, .thing-deck td { the deck's own padding, border and background exactly as its table rules state, so base.scss lines 528-545 do not show through }; .thing-deck ul { list-style: the deck's value; padding and margin as the deck had }; .thing-deck .external-icon { display: none }.",
+    "site/quartz/static/thing/deck.js: the deck's script with var root=document.querySelector('.thing-deck'); tok() therefore reads the deck root's computed style, where the tokens now live, and reduced motion adds .rm to the deck root. Wrapped as it was (an IIFE); no module, no bundler.",
+    "site/quartz.layout.ts: const isThingPage = (page) => page.fileData.slug === \"Thing\"; isStandardContentPage also requires !isThingPage(page) (so Breadcrumbs, ArticleTitle, ContentMeta and Backlinks skip it); the right-sidebar GameCultOverviewSidebar condition adds && !isThingPage(page); the left TableOfContents renders nothing because enableToc is false. Both sidebars empty gives one column through the existing :has(:empty) grid rules.",
+    "site/quartz/styles/custom.scss, one slug-scoped block beside the other body[data-slug] blocks: body[data-slug=\"Thing\"] { .page { max-width: none; padding: 0; } .page > #quartz-body .center > .page-header { max-width: 1680px; margin-inline: auto; padding: 0 1.2rem; } .page > #quartz-body .center > article { background: none; border: 0; border-radius: 0; box-shadow: none; padding: 0; } .page > #quartz-body .center > hr { display: none; } .page > #quartz-body .center > .page-footer { margin-top: 0; } }. The site Footer stays below the deck. Nothing in this block targets anything inside .thing-deck.",
+    "GameCult/Blog/project-thing.md body after the H1: the existing paragraph, then one sentence with a link: <a href=\"/Thing\">Open the Thing page</a>. Nothing else.",
+    "GameCult/Projects/index.md, Eve card: the Project Thing list item's href becomes /Thing; its text is unchanged."
+  ],
+  "file_changes": [
+    {
+      "location": {
+        "path": "GameCult/Thing.md",
+        "line": 1,
+        "end_line": 290
+      },
+      "change": "new file: frontmatter, tagline line, stylesheet link, the deck's markup inside <div class=\"thing-deck\"> with blank lines removed, the deferred script tag."
+    },
+    {
+      "location": {
+        "path": "site/quartz/static/thing/deck.css",
+        "line": 1,
+        "end_line": 270
+      },
+      "change": "new file: the applet's <style> content scoped to .thing-deck as in adds, plus the reach-in guards."
+    },
+    {
+      "location": {
+        "path": "site/quartz/static/thing/deck.js",
+        "line": 1,
+        "end_line": 150
+      },
+      "change": "new file: the applet's <script> content with root = document.querySelector('.thing-deck')."
+    },
+    {
+      "location": {
+        "path": "site/quartz/static/applets/project-thing/index.html",
+        "line": 1,
+        "end_line": 12
+      },
+      "change": "replaced by the redirect stub to /Thing."
+    },
+    {
+      "location": {
+        "path": "site/quartz.layout.ts",
+        "line": 9,
+        "end_line": 70
+      },
+      "change": "isThingPage predicate; isStandardContentPage and the overview-sidebar condition exclude it."
+    },
+    {
+      "location": {
+        "path": "site/quartz/styles/custom.scss",
+        "line": 1148,
+        "end_line": 1150
+      },
+      "change": "the project-thing iframe height rule removed; the body[data-slug=\"Thing\"] chrome block added beside the other slug-scoped blocks."
+    },
+    {
+      "location": {
+        "path": "GameCult/Blog/project-thing.md",
+        "line": 15,
+        "end_line": 25
+      },
+      "change": "embed and direct link removed; one link to /Thing added."
+    },
+    {
+      "location": {
+        "path": "GameCult/Projects/index.md",
+        "line": 74,
+        "end_line": 76
+      },
+      "change": "the Project Thing item links to /Thing."
+    }
+  ],
+  "authority_map": {
+    "owner": "deck.css owns the deck's look, scoped to .thing-deck; custom.scss under body[data-slug=\"Thing\"] and quartz.layout.ts own the page chrome on the Thing page; the engine (renderPage.tsx) owns the frame and is not edited; the polish cut's head owns the deck's markup and script.",
+    "inputs": [
+      "the applet at the polish cut's landing head",
+      "site/quartz.layout.ts predicates",
+      "custom.scss slug-scoped blocks and the article card rule (lines 1089-1099)",
+      "GameCult-Quartz base.scss rules that reach into article content",
+      "stripTopTagline in site/quartz/components/gamecult.ts"
+    ],
+    "outputs": [
+      "https://gamecult.org/Thing",
+      "https://gamecult.org/static/thing/deck.css and deck.js",
+      "https://gamecult.org/static/applets/project-thing/index.html as a redirect to /Thing",
+      "the Blog post and the Eve card pointing at /Thing"
+    ],
+    "derived_state": [
+      "the masthead tagline, lifted from the page's first line",
+      "the one-column grid, from both sidebars being empty",
+      "the search-index text for /Thing, from the deck's copy only",
+      "quartz-site/public is build output, git-ignored, never committed"
+    ],
+    "forbidden_writers": [
+      "no site stylesheet rule targets anything inside .thing-deck",
+      "no selector in deck.css is unprefixed; no :root, body or html rule in it",
+      "no second copy of the deck: the applet stub holds no markup, style or script",
+      "no iframe, no fixed overlay root, no overflow:hidden on body",
+      "no edit to the deck's copy, numbers, exhibits or script logic beyond the one root line",
+      "no edit to the engine"
+    ],
+    "shared_paths": [
+      "the same Deploy Quartz workflow and Pages origin every site change uses",
+      "the same slug-predicate and slug-scoped-CSS mechanisms the Graph and the sleeping-colossus post use"
+    ],
+    "deletion_line": "the applet's style, body and script are moved out and the file reduced to the stub, the post's embed and the 85vh rule are removed, before the Thing page is added."
+  },
+  "verification": {
+    "builds": [
+      "Deploy Quartz on GameCult/gamecult-site green for the landing commit: gh run list -R GameCult/gamecult-site -w \"Deploy Quartz\" -L 1",
+      "optional: .\\scripts\\quartz\\quartz.ps1 build succeeds and quartz-site/public/Thing/index.html, static/thing/deck.css, static/thing/deck.js exist"
+    ],
+    "tests": [
+      {
+        "name": "curl -sI https://gamecult.org/Thing returns 200; /static/thing/deck.css and deck.js return 200; /static/applets/project-thing/index.html returns 200 and its body carries the refresh to /Thing",
+        "pins": "site-green and old-names-resolve: the page is live and the old URL still answers."
+      },
+      {
+        "name": "screenshots of /Thing at 1440 and 375 px: masthead with tagline 'Thing renders things.' above the deck's hero, full width, no article card, sidebars, breadcrumbs or page title",
+        "pins": "operator-deck-is-a-site-page: existing masthead, deck filling the screen, stacked. After scrolling past the masthead the hero stage fills the viewport alone."
+      },
+      {
+        "name": "scroll /Thing end to end at 1440 and 375 px: every hero and exhibit animation runs, HUD progress and TPS update, no horizontal scrollbar, the site footer follows the close section",
+        "pins": "the deck is unchanged in behaviour inside the page (slam, rings, burst, reveals, etymology scrub, waterfall, TAM orbits, statement, close); the polish cut's work carries over."
+      },
+      {
+        "name": "computed styles on /Thing: .thing-deck .xhead h2 is Montserrat 200; no external-icon visible inside .thing-deck; masthead chip font and colour and body background equal those on /Projects",
+        "pins": "scoped both ways: nothing leaks in (base.scss a/strong/heading/table rules), nothing leaks out (the masthead and body look as on every other page)."
+      },
+      {
+        "name": "with prefers-reduced-motion: reduce emulated, .thing-deck carries class rm and every section renders in its finished state",
+        "pins": "the script's root change keeps reduced motion working."
+      },
+      {
+        "name": "diff GameCult/Thing.md's markup inside the wrapper against the applet's <body> at the polish head, and deck.js against its <script>",
+        "pins": "one copy, moved, not rewritten: the markup differs only by removed blank lines, deck.js only at the root line."
+      },
+      {
+        "name": "read_page of /Blog/project-thing shows the paragraph and the link to /Thing and no iframe; the Eve card on /Projects links to /Thing",
+        "pins": "the post is the announcement; the page is the deck."
+      }
+    ],
+    "negative": [
+      {
+        "pattern": "^[^.@}/ \\t][^{]*\\{|^:root|^body|^html",
+        "scope": "site/quartz/static/thing/deck.css: no match on any rule line outside @keyframes bodies (every rule starts with .thing-deck)."
+      },
+      {
+        "pattern": "thing-deck",
+        "scope": "site/quartz/styles/custom.scss and GameCult-Quartz: no match."
+      },
+      {
+        "pattern": "<style|<script>|<iframe|gamecult-embed-frame",
+        "scope": "GameCult/Thing.md: no match (styles and script are linked files; no iframe)."
+      },
+      {
+        "pattern": "^\\s*$",
+        "scope": "GameCult/Thing.md between <div class=\"thing-deck\"> and its closing </div>: no match (no blank line inside the HTML block)."
+      },
+      {
+        "pattern": "class=\"hero\"|hud-bar|<style",
+        "scope": "site/quartz/static/applets/project-thing/index.html: no match (the stub holds no deck)."
+      },
+      {
+        "pattern": "Blog/project-thing\"\\] \\.gamecult-embed-frame",
+        "scope": "site/quartz/styles/custom.scss: no match."
+      },
+      {
+        "pattern": "quartz-site/public",
+        "scope": "git ls-files: no match."
+      }
+    ],
+    "operator": [
+      "look at https://gamecult.org/Thing on a desktop and a phone and say whether the masthead plus deck reads as the Thing page on the GameCult site"
+    ]
+  },
+  "estimate": {
+    "lines_added": 720,
+    "lines_removed": 680,
+    "dependencies_added": [],
+    "dependencies_removed": [],
+    "formats_added": [],
+    "formats_removed": [],
+    "targets_added": [
+      "/Thing",
+      "/static/thing/deck.css",
+      "/static/thing/deck.js"
+    ],
+    "targets_removed": []
+  },
+  "rulings": [
+    "thing:ruling:operator-deck-is-a-site-page",
+    "thing:ruling:operator-brand-reskin",
+    "thing:ruling:operator-deck-facts-fix",
+    "thing:ruling:operator-home-eve-repo"
+  ],
+  "questions": [
+    "thing:question:thing-page-url"
+  ]
+}