diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 20f9a7a..35a5759 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -4704,7 +4704,7 @@ checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
 
 [[package]]
 name = "margin-app"
-version = "0.1.1"
+version = "0.1.2"
 dependencies = [
  "base64 0.22.1",
  "harper-core",
diff --git a/src/components/DeviceFrame.tsx b/src/components/DeviceFrame.tsx
new file mode 100644
index 0000000..c0db39d
--- /dev/null
+++ b/src/components/DeviceFrame.tsx
@@ -0,0 +1,67 @@
+import type { CSSProperties, ReactNode } from "react";
+import type { Device } from "../devices";
+import type { Book } from "../model/book";
+import { CoverArt } from "./CoverArt";
+
+interface DeviceFrameProps {
+  device: Device;
+  eyebrow?: ReactNode;
+  title?: ReactNode;
+  html?: string;
+  cover?: Book;
+}
+
+function frameVars(device: Device): CSSProperties {
+  return {
+    "--dv-bg": device.bg,
+    "--dv-ink": device.ink,
+    "--dv-fs": device.fontSize,
+    "--dv-lh": device.lineHeight,
+    "--dv-mx": device.marginX,
+    "--dv-my": device.marginY,
+    "--dv-bezel": device.bezel,
+    "--dv-bezel-w": device.bezelWidth,
+    "--dv-radius": device.radius,
+    "--dv-aspect": device.aspect,
+  } as CSSProperties;
+}
+
+function StatusBar() {
+  return (
+    <div className="device-statusbar">
+      <span className="device-clock">9:41</span>
+      <span className="device-batt" />
+    </div>
+  );
+}
+
+export function DeviceFrame({ device, eyebrow, title, html, cover }: DeviceFrameProps) {
+  return (
+    <div className="device-stage">
+      <div className="device-frame" data-kind={device.kind} style={frameVars(device)}>
+        <div className="device-screen">
+          {device.kind === "tablet" && <StatusBar />}
+          <div className="device-content">
+            {cover ? (
+              <CoverArt book={cover} />
+            ) : (
+              <>
+                <div className="device-opener">
+                  {eyebrow && <div className="device-eyebrow">{eyebrow}</div>}
+                  {title && <div className="device-title">{title}</div>}
+                </div>
+                <div className="device-body" dangerouslySetInnerHTML={{ __html: html ?? "" }} />
+              </>
+            )}
+          </div>
+          {device.kind === "eink" && (
+            <div className="device-footer">
+              <span className="device-foot-title">{cover ? device.label : title}</span>
+              <span className="device-batt" />
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/src/components/Dock.tsx b/src/components/Dock.tsx
index 377111c..700306f 100644
--- a/src/components/Dock.tsx
+++ b/src/components/Dock.tsx
@@ -1,12 +1,15 @@
-import { useEffect, useMemo, useRef, useState } from "react";
+import { type ReactNode, useEffect, useMemo, useRef, useState } from "react";
 import { generateHTML } from "@tiptap/core";
 import { COVER_ID, useBook } from "../store/useBook";
-import { type TrimSize, bodyNumber, chapterKind } from "../model/book";
+import { type Chapter, type TrimSize, bodyNumber, chapterKind } from "../model/book";
 import { editorExtensions } from "../editor/extensions";
 import { chapterToPdfInputs, coverToPdfInputs } from "../export/typst";
 import { compilePdf, isDesktop } from "../ipc";
+import { DEVICES, type Device, findDevice } from "../devices";
+import { usePreviewMode } from "../store/usePreviewMode";
 import { PdfPreview } from "./PdfPreview";
 import { CoverArt } from "./CoverArt";
+import { DeviceFrame } from "./DeviceFrame";
 
 const TRIMS: { value: TrimSize; label: string }[] = [
   { value: "6x9", label: "6 × 9 in" },
@@ -15,26 +18,77 @@ const TRIMS: { value: TrimSize; label: string }[] = [
   { value: "a5", label: "A5" },
 ];
 
-function TrimSelect() {
+function PreviewSelect() {
   const trim = useBook((s) => s.book?.settings.trim ?? "6x9");
   const setSettings = useBook((s) => s.setSettings);
+  const mode = usePreviewMode((s) => s.mode);
+  const setMode = usePreviewMode((s) => s.setMode);
+  const value = mode === "print" ? trim : mode;
   return (
     <select
       className="trim-select"
-      value={trim}
-      onChange={(e) => setSettings({ trim: e.target.value as TrimSize })}
-      title="Trim size"
+      value={value}
+      onChange={(e) => {
+        const v = e.target.value;
+        if (findDevice(v)) {
+          setMode(v as Device["id"]);
+        } else {
+          setSettings({ trim: v as TrimSize });
+          setMode("print");
+        }
+      }}
+      title="Preview format"
     >
-      {TRIMS.map((t) => (
-        <option key={t.value} value={t.value}>
-          {t.label}
-        </option>
-      ))}
+      <optgroup label="Print">
+        {TRIMS.map((t) => (
+          <option key={t.value} value={t.value}>
+            {t.label}
+          </option>
+        ))}
+      </optgroup>
+      <optgroup label="Devices">
+        {DEVICES.map((d) => (
+          <option key={d.id} value={d.id}>
+            {d.label}
+          </option>
+        ))}
+      </optgroup>
     </select>
   );
 }
 
+function DockHead({ meta }: { meta?: ReactNode }) {
+  return (
+    <div className="dock-head">
+      <span className="label">Preview</span>
+      <div className="dock-tools">
+        {meta}
+        <PreviewSelect />
+      </div>
+    </div>
+  );
+}
+
+function chapterEyebrow(chapter: Chapter, chapters: Chapter[], idx: number): string {
+  const kind = chapterKind(chapter);
+  return kind === "body" ? `Chapter ${bodyNumber(chapters, idx) ?? ""}` : kind === "front" ? "Front matter" : "Back matter";
+}
+
+function useActiveChapter() {
+  const book = useBook((s) => s.book);
+  const activeChapterId = useBook((s) => s.activeChapterId);
+  const chapters = book?.chapters ?? [];
+  const idx = chapters.findIndex((c) => c.id === activeChapterId);
+  const chapter = chapters[idx] ?? chapters[0];
+  const html = useMemo(() => (chapter ? generateHTML(chapter.content, editorExtensions) : ""), [chapter]);
+  const eyebrow = chapter ? chapterEyebrow(chapter, chapters, idx) : "";
+  return { book, coverActive: activeChapterId === COVER_ID, chapters, idx, chapter, html, eyebrow };
+}
+
 export function Dock() {
+  const mode = usePreviewMode((s) => s.mode);
+  const device = findDevice(mode);
+  if (device) return <DeviceDock device={device} />;
   return isDesktop ? <PdfDock /> : <HtmlDock />;
 }
 
@@ -67,13 +121,7 @@ function PdfDock() {
 
   return (
     <section className="dock">
-      <div className="dock-head">
-        <span className="label">Preview</span>
-        <div className="dock-tools">
-          {busy && <span className="meta">updating…</span>}
-          <TrimSelect />
-        </div>
-      </div>
+      <DockHead meta={busy ? <span className="meta">updating…</span> : null} />
       {error ? (
         <pre className="dock-error">{error}</pre>
       ) : pdf ? (
@@ -86,26 +134,14 @@ function PdfDock() {
 }
 
 function HtmlDock() {
-  const book = useBook((s) => s.book);
-  const activeChapterId = useBook((s) => s.activeChapterId);
-  const coverActive = activeChapterId === COVER_ID;
-  const chapters = book?.chapters ?? [];
-  const idx = chapters.findIndex((c) => c.id === activeChapterId);
-  const chapter = chapters[idx] ?? chapters[0];
-  const html = useMemo(() => (chapter ? generateHTML(chapter.content, editorExtensions) : ""), [chapter]);
+  const { book, coverActive, chapters, idx, chapter, html, eyebrow } = useActiveChapter();
 
   if (!book) return null;
 
   if (coverActive) {
     return (
       <section className="dock">
-        <div className="dock-head">
-          <span className="label">Preview</span>
-          <div className="dock-tools">
-            <span className="meta">Cover</span>
-            <TrimSelect />
-          </div>
-        </div>
+        <DockHead meta={<span className="meta">Cover</span>} />
         <div className="cover-stage">
           <CoverArt book={book} />
         </div>
@@ -115,21 +151,15 @@ function HtmlDock() {
 
   if (!chapter) return null;
 
-  const kind = chapterKind(chapter);
-  const eyebrow =
-    kind === "body" ? `Chapter ${bodyNumber(chapters, idx) ?? ""}` : kind === "front" ? "Front matter" : "Back matter";
-
   return (
     <section className="dock">
-      <div className="dock-head">
-        <span className="label">Preview</span>
-        <div className="dock-tools">
+      <DockHead
+        meta={
           <span className="meta">
             {idx + 1} of {chapters.length}
           </span>
-          <TrimSelect />
-        </div>
-      </div>
+        }
+      />
       <div className="page">
         <div className="p-opener">
           <div className="p-num">{eyebrow}</div>
@@ -141,3 +171,45 @@ function HtmlDock() {
     </section>
   );
 }
+
+function DeviceDock({ device }: { device: Device }) {
+  const { book, coverActive, chapters, idx, chapter, html, eyebrow } = useActiveChapter();
+
+  if (!book) return null;
+
+  if (coverActive) {
+    return (
+      <section className="dock">
+        <DockHead meta={<span className="meta">Cover</span>} />
+        <DeviceFrame device={device} cover={book} />
+      </section>
+    );
+  }
+
+  if (!chapter) {
+    return (
+      <section className="dock">
+        <DockHead />
+        <div className="dock-empty">No chapter selected.</div>
+      </section>
+    );
+  }
+
+  return (
+    <section className="dock">
+      <DockHead
+        meta={
+          <span className="meta">
+            {idx + 1} of {chapters.length}
+          </span>
+        }
+      />
+      <DeviceFrame
+        device={device}
+        eyebrow={eyebrow}
+        title={chapter.noTitle ? undefined : chapter.title || "Untitled"}
+        html={html}
+      />
+    </section>
+  );
+}
diff --git a/src/devices.ts b/src/devices.ts
new file mode 100644
index 0000000..9fc799d
--- /dev/null
+++ b/src/devices.ts
@@ -0,0 +1,115 @@
+export type DeviceId = "kindle" | "kobo" | "ipad" | "iphone" | "android";
+export type PreviewMode = "print" | DeviceId;
+export type DeviceKind = "eink" | "phone" | "tablet";
+
+export interface Device {
+  id: DeviceId;
+  label: string;
+  kind: DeviceKind;
+  bg: string;
+  ink: string;
+  fontSize: number;
+  lineHeight: number;
+  marginX: number;
+  marginY: number;
+  aspect: number;
+  bezel: string;
+  bezelWidth: number;
+  radius: number;
+}
+
+export const DEVICES: Device[] = [
+  {
+    id: "kindle",
+    label: "Kindle Paperwhite",
+    kind: "eink",
+    bg: "#f4f3ee",
+    ink: "#2b2b2b",
+    fontSize: 16,
+    lineHeight: 1.55,
+    marginX: 34,
+    marginY: 40,
+    aspect: 1240 / 1680,
+    bezel: "#1c1c1c",
+    bezelWidth: 18,
+    radius: 14,
+  },
+  {
+    id: "kobo",
+    label: "Kobo",
+    kind: "eink",
+    bg: "#f6f5f0",
+    ink: "#262626",
+    fontSize: 16,
+    lineHeight: 1.6,
+    marginX: 34,
+    marginY: 40,
+    aspect: 1264 / 1680,
+    bezel: "#2a2a2a",
+    bezelWidth: 16,
+    radius: 16,
+  },
+  {
+    id: "ipad",
+    label: "iPad",
+    kind: "tablet",
+    bg: "#fbfaf7",
+    ink: "#1d1d1f",
+    fontSize: 18,
+    lineHeight: 1.65,
+    marginX: 56,
+    marginY: 56,
+    aspect: 1640 / 2360,
+    bezel: "#3a3a3c",
+    bezelWidth: 20,
+    radius: 28,
+  },
+  {
+    id: "iphone",
+    label: "iPhone",
+    kind: "phone",
+    bg: "#ffffff",
+    ink: "#1d1d1f",
+    fontSize: 17,
+    lineHeight: 1.6,
+    marginX: 26,
+    marginY: 30,
+    aspect: 1179 / 2556,
+    bezel: "#1a1a1c",
+    bezelWidth: 12,
+    radius: 44,
+  },
+  {
+    id: "android",
+    label: "Android phone",
+    kind: "phone",
+    bg: "#ffffff",
+    ink: "#202124",
+    fontSize: 16,
+    lineHeight: 1.6,
+    marginX: 24,
+    marginY: 28,
+    aspect: 1080 / 2400,
+    bezel: "#0f0f0f",
+    bezelWidth: 11,
+    radius: 36,
+  },
+];
+
+const DEVICE_MAP = new Map<string, Device>(DEVICES.map((d) => [d.id, d]));
+
+const KEY = "margin-preview-mode";
+
+export function findDevice(id: string): Device | undefined {
+  return DEVICE_MAP.get(id);
+}
+
+export function initialPreviewMode(): PreviewMode {
+  const saved = localStorage.getItem(KEY);
+  if (saved === "print" || (saved && DEVICE_MAP.has(saved))) return saved as PreviewMode;
+  return "print";
+}
+
+export function persistPreviewMode(mode: PreviewMode) {
+  localStorage.setItem(KEY, mode);
+}
diff --git a/src/store/usePreviewMode.ts b/src/store/usePreviewMode.ts
new file mode 100644
index 0000000..39298c3
--- /dev/null
+++ b/src/store/usePreviewMode.ts
@@ -0,0 +1,15 @@
+import { create } from "zustand";
+import { type PreviewMode, initialPreviewMode, persistPreviewMode } from "../devices";
+
+interface PreviewState {
+  mode: PreviewMode;
+  setMode: (mode: PreviewMode) => void;
+}
+
+export const usePreviewMode = create<PreviewState>((set) => ({
+  mode: initialPreviewMode(),
+  setMode: (mode) => {
+    persistPreviewMode(mode);
+    set({ mode });
+  },
+}));
diff --git a/src/styles/app.css b/src/styles/app.css
index 11a5c8c..e3cd46e 100644
--- a/src/styles/app.css
+++ b/src/styles/app.css
@@ -1992,3 +1992,194 @@ body.resizing {
   background: var(--accent-wash);
   color: var(--ink);
 }
+
+.device-stage {
+  max-width: 420px;
+  margin: 0 auto;
+  padding-block: 6px;
+  container-type: inline-size;
+}
+
+.device-frame {
+  --dv-scale: calc(100cqi / 380);
+  width: 100%;
+  padding: calc(var(--dv-bezel-w) * var(--dv-scale));
+  background: var(--dv-bezel);
+  border-radius: calc(var(--dv-radius) * var(--dv-scale));
+  box-shadow: var(--shadow-page);
+}
+
+.device-screen {
+  aspect-ratio: var(--dv-aspect);
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  background: var(--dv-bg);
+  color: var(--dv-ink);
+  border-radius: calc(max(0px, (var(--dv-radius) - var(--dv-bezel-w)) * var(--dv-scale)));
+}
+
+.device-statusbar {
+  flex: none;
+  height: calc(30 * var(--dv-scale));
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 calc(18 * var(--dv-scale));
+  font-family: var(--font-ui);
+  font-size: calc(11 * var(--dv-scale));
+  font-weight: 600;
+  color: var(--dv-ink);
+}
+
+.device-clock {
+  letter-spacing: 0.01em;
+}
+
+.device-batt {
+  position: relative;
+  flex: none;
+  width: calc(22 * var(--dv-scale));
+  height: calc(11 * var(--dv-scale));
+  border: calc(1.4 * var(--dv-scale)) solid var(--dv-ink);
+  border-radius: calc(3 * var(--dv-scale));
+  opacity: 0.7;
+}
+
+.device-batt::before {
+  content: "";
+  position: absolute;
+  top: calc(1.5 * var(--dv-scale));
+  bottom: calc(1.5 * var(--dv-scale));
+  left: calc(1.5 * var(--dv-scale));
+  width: 55%;
+  background: var(--dv-ink);
+  border-radius: 1px;
+}
+
+.device-batt::after {
+  content: "";
+  position: absolute;
+  right: calc(-3 * var(--dv-scale));
+  top: 30%;
+  height: 40%;
+  width: calc(2 * var(--dv-scale));
+  border-radius: 1px;
+  background: var(--dv-ink);
+}
+
+.device-content {
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
+  padding: calc(var(--dv-my) * var(--dv-scale)) calc(var(--dv-mx) * var(--dv-scale));
+  font-family: var(--font-book);
+  font-size: calc(var(--dv-fs) * var(--dv-scale));
+  line-height: var(--dv-lh);
+}
+
+.device-frame[data-kind="eink"] .device-content::-webkit-scrollbar {
+  display: none;
+}
+
+.device-opener {
+  text-align: center;
+  margin-bottom: calc(20 * var(--dv-scale));
+}
+
+.device-eyebrow {
+  font-family: var(--font-ui);
+  font-size: calc(10 * var(--dv-scale));
+  font-weight: 600;
+  letter-spacing: 0.22em;
+  text-transform: uppercase;
+  opacity: 0.5;
+  margin-bottom: calc(8 * var(--dv-scale));
+}
+
+.device-title {
+  font-family: var(--font-book);
+  font-weight: 500;
+  font-size: calc(24 * var(--dv-scale));
+  line-height: 1.2;
+  letter-spacing: -0.01em;
+}
+
+.device-body p {
+  font-family: var(--font-book);
+  hyphens: auto;
+  margin: 0 0 0.8em;
+  color: var(--dv-ink);
+}
+
+.device-body p[data-indent="true"] {
+  text-indent: 1.2em;
+}
+
+.device-frame[data-kind="eink"] .device-body p {
+  text-align: justify;
+}
+
+.device-frame[data-kind="phone"] .device-body p,
+.device-frame[data-kind="tablet"] .device-body p {
+  text-align: left;
+}
+
+.device-body h1,
+.device-body h2,
+.device-body h3 {
+  font-family: var(--font-book);
+  font-weight: 600;
+  line-height: 1.25;
+  margin: 1.2em 0 0.5em;
+}
+
+.device-body blockquote {
+  margin: 0 0 0.8em;
+  padding-left: 1em;
+  border-left: 2px solid currentColor;
+  font-style: italic;
+  opacity: 0.85;
+}
+
+.device-body hr {
+  border: none;
+  border-top: 1px solid currentColor;
+  width: calc(40 * var(--dv-scale));
+  margin: calc(16 * var(--dv-scale)) auto;
+  opacity: 0.3;
+}
+
+.device-body img {
+  display: block;
+  max-width: 100%;
+  height: auto;
+  margin: 0.8em auto;
+}
+
+.device-footer {
+  flex: none;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: calc(10 * var(--dv-scale));
+  padding: calc(8 * var(--dv-scale)) calc(var(--dv-mx) * var(--dv-scale));
+  font-family: var(--font-ui);
+  font-size: calc(11 * var(--dv-scale));
+  color: var(--dv-ink);
+  opacity: 0.55;
+}
+
+.device-foot-title {
+  overflow: hidden;
+  white-space: nowrap;
+  text-overflow: ellipsis;
+}
+
+.device-content .cover-art {
+  width: 100%;
+  margin: auto;
+  box-shadow: none;
+  border: none;
+  border-radius: 0;
+}
diff --git a/website/package.json b/website/package.json
index fa956a9..3c84e46 100644
--- a/website/package.json
+++ b/website/package.json
@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "astro dev",
     "build": "astro build",
-    "preview": "astro preview"
+    "preview": "astro preview",
+    "deploy": "astro build && npx wrangler pages deploy dist --project-name=margin --commit-dirty=true"
   },
   "dependencies": {
     "astro": "^5.6.1"
diff --git a/website/src/components/AppWindow.astro b/website/src/components/AppWindow.astro
index b6306ec..ae42bda 100644
--- a/website/src/components/AppWindow.astro
+++ b/website/src/components/AppWindow.astro
@@ -1,37 +1,70 @@
 ---
-// A faithful CSS mock-up of the Margin desktop app: chapter sidebar, the
-// writing surface set in Literata, and the live PDF preview dock. The editor
-// shows live proofing underlines; the PDF dock shows the clean typeset page.
+// A faithful CSS mock-up of the Margin desktop app: the All-books sidebar with
+// front-matter / chapter sections, the writing surface set in Literata with live
+// proofing, and the live PDF preview dock with its trim selector.
 ---
 
 <div class="win" role="img" aria-label="The Margin app: a chapter sidebar, a writing surface with live proofing, and a live PDF page preview.">
   <div class="win__bar">
-    <span class="dot"></span><span class="dot"></span><span class="dot"></span>
+    <span class="win__chrome"><span class="dot"></span><span class="dot"></span><span class="dot"></span></span>
     <span class="win__title">The Lighthouse Keeper</span>
-    <span class="win__menu">Export ▾</span>
+    <span class="win__actions">
+      <span class="ibtn"><svg class="i" viewBox="0 0 24 24"><path d="M11 4a7 7 0 1 0 0 14 7 7 0 0 0 0-14zM20 20l-4-4" /></svg></span>
+      <span class="ibtn"><svg class="i" viewBox="0 0 24 24"><path d="M4 17l4-10 4 10M5.4 13.4h5.2M15 17l2.5 2.5L22 14" /></svg></span>
+      <span class="ibtn"><svg class="i" viewBox="0 0 24 24"><path d="M4 7h16M4 12h12M4 17h7M13.5 18.5c1-1.2 2-1.2 3 0s2 1.2 3 0" /></svg></span>
+      <span class="ibtn"><svg class="i" viewBox="0 0 24 24"><path d="M3 5v14M21 5v14M7 12h10M7 12l3-3M7 12l3 3M17 12l-3-3M17 12l-3 3" /></svg></span>
+      <span class="ibtn"><svg class="i" viewBox="0 0 24 24"><path d="M5 13v6h14v-6M12 16V3M8 7l4-4 4 4" /></svg></span>
+      <span class="ibtn"><svg class="i" viewBox="0 0 24 24"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z" /></svg></span>
+      <span class="ibtn is-on"><svg class="i" viewBox="0 0 24 24"><path d="M3 4.5h18v15H3zM14 4.5v15" /></svg></span>
+    </span>
   </div>
 
   <div class="win__body">
     <aside class="side">
-      <p class="side__label">Manuscript</p>
-      <ul>
-        <li>Title Page</li>
-        <li>Dedication</li>
-        <li class="is-active">1 · The Cliff</li>
-        <li>2 · A Light at Sea</li>
-        <li>3 · Salt and Silence</li>
-        <li>4 · The Long Night</li>
-      </ul>
-      <p class="side__label">Book setup</p>
-      <ul class="side__meta">
-        <li>Trim · 5 × 8 in</li>
-        <li>Language · English</li>
-      </ul>
+      <span class="side__brand">
+        <svg class="i" viewBox="0 0 24 24"><path d="M14 7l-5 5 5 5" /></svg>All books
+      </span>
+      <span class="side__cover">
+        <svg class="i" viewBox="0 0 24 24"><path d="M5 4h11l3 3v13H5zM16 4v4h3" /></svg>Cover
+      </span>
+      <span class="side__add">
+        <svg class="i" viewBox="0 0 24 24"><path d="M12 5v14M5 12h14" /></svg>Add page
+      </span>
+
+      <div class="side__scroll">
+        <div class="side__section">
+          <p class="side__label">Front matter</p>
+          <ul class="side__list">
+            <li class="row"><span class="grip"></span><span class="num"></span><span class="text"><span class="title">Title Page</span></span></li>
+            <li class="row"><span class="grip"></span><span class="num"></span><span class="text"><span class="title">Dedication</span></span></li>
+          </ul>
+        </div>
+
+        <div class="side__section">
+          <p class="side__label">Chapters</p>
+          <ul class="side__list">
+            <li class="row is-active">
+              <span class="grip"><svg class="i" viewBox="0 0 24 24"><path d="M9 6h.01M15 6h.01M9 12h.01M15 12h.01M9 18h.01M15 18h.01" /></svg></span>
+              <span class="num">1</span>
+              <span class="text">
+                <span class="title">The Cliff</span>
+                <span class="meta">Edited yesterday</span>
+              </span>
+            </li>
+            <li class="row"><span class="grip"></span><span class="num">2</span><span class="text"><span class="title">A Light at Sea</span></span></li>
+            <li class="row"><span class="grip"></span><span class="num">3</span><span class="text"><span class="title">Salt and Silence</span></span></li>
+            <li class="row"><span class="grip"></span><span class="num">4</span><span class="text"><span class="title">The Long Night</span></span></li>
+          </ul>
+          <span class="side__newchapter">
+            <svg class="i" viewBox="0 0 24 24"><path d="M12 5v14M5 12h14" /></svg>New chapter
+          </span>
+        </div>
+      </div>
     </aside>
 
     <main class="page">
       <div class="page__sheet">
-        <p class="chapno">Chapter One</p>
+        <p class="chapno">Chapter 1</p>
         <h4 class="chaptitle">The Cliff</h4>
         <p>
           The lighthouse had stood on the headland for ninety years, and in all that time it had
@@ -47,21 +80,36 @@
     </main>
 
     <aside class="dock">
-      <p class="dock__label">Live PDF · pg 7</p>
-      <div class="dock__pdf">
-        <span class="rh">THE LIGHTHOUSE KEEPER</span>
-        <p class="pch">Chapter One</p>
-        <p class="pdt">The Cliff</p>
-        <p class="pp pp--first">
-          The lighthouse had stood on the headland for ninety years, and in all that time it had
-          never once gone dark. Mara intended to keep it that way.
-        </p>
-        <p class="pp">
-          She climbed the iron stair each evening at dusk, counting the hundred and one steps out
-          of habit, and watched the lamp turn its slow circle across the water.
-        </p>
-        <p class="pp">The sea, tonight, was the colour of pewter.</p>
-        <span class="pg">7</span>
+      <div class="dock__head">
+        <span class="dock__label">Preview</span>
+        <span class="dock__trim">
+          5 × 8 in
+          <svg class="i" viewBox="0 0 24 24"><path d="M8 10l4-4 4 4M8 14l4 4 4-4" /></svg>
+        </span>
+      </div>
+
+      <div class="dock__pages">
+        <div class="dock__page">
+          <p class="pch">Chapter 1</p>
+          <p class="pdt">The Cliff</p>
+          <p class="pp pp--first">
+            The lighthouse had stood on the headland for ninety years, and in all that time it had
+            never once gone dark. Mara intended to keep it that way.
+          </p>
+          <p class="pp">
+            She climbed the iron stair each evening at dusk, counting the hundred and one steps out
+            of habit, and watched the lamp turn its slow circle across the water.
+          </p>
+          <p class="pp">The sea, tonight, was the colour of pewter.</p>
+          <span class="pg">1</span>
+        </div>
+        <div class="dock__page dock__page--peek">
+          <p class="pp pp--first">
+            Morning came grey and slow. She brewed coffee in the keeper's kitchen and listened to the
+            gulls argue over the rocks below.
+          </p>
+          <p class="pp">The radio crackled once, then fell silent.</p>
+        </div>
       </div>
     </aside>
   </div>
@@ -76,115 +124,231 @@
     box-shadow: var(--shadow-deep);
     overflow: hidden;
   }
+  .i {
+    width: 15px;
+    height: 15px;
+    flex: none;
+    fill: none;
+    stroke: currentColor;
+    stroke-width: 1.6;
+    stroke-linecap: round;
+    stroke-linejoin: round;
+  }
+
   .win__bar {
-    display: flex;
+    display: grid;
+    grid-template-columns: 1fr auto 1fr;
     align-items: center;
-    gap: 8px;
-    height: 40px;
-    padding-inline: 16px;
+    height: 44px;
+    padding-inline: 14px;
     border-bottom: 1px solid var(--line);
-    background: var(--sidebar);
-    font-size: 0.78rem;
-    color: var(--ink-faint);
+    background: var(--shell);
+  }
+  .win__chrome {
+    display: flex;
+    gap: 8px;
   }
   .dot {
     width: 11px;
     height: 11px;
     border-radius: 50%;
   }
-  .win__bar .dot:nth-child(1) {
+  .win__chrome .dot:nth-child(1) {
     background: #ff5f57;
   }
-  .win__bar .dot:nth-child(2) {
+  .win__chrome .dot:nth-child(2) {
     background: #febc2e;
   }
-  .win__bar .dot:nth-child(3) {
+  .win__chrome .dot:nth-child(3) {
     background: #28c840;
   }
   .win__title {
-    margin-inline: auto;
-    font-weight: 500;
-  }
-  .win__menu {
+    grid-column: 2;
+    font-size: 0.82rem;
+    letter-spacing: 0.01em;
     color: var(--ink-soft);
-    font-weight: 500;
   }
+  .win__actions {
+    grid-column: 3;
+    justify-self: end;
+    display: flex;
+    gap: 2px;
+  }
+  .ibtn {
+    width: 28px;
+    height: 28px;
+    display: grid;
+    place-items: center;
+    border-radius: var(--r-sm);
+    color: var(--ink-soft);
+  }
+  .ibtn.is-on {
+    color: var(--accent);
+    background: var(--accent-wash);
+    box-shadow: inset 0 0 0 1px var(--line-strong);
+  }
+
   .win__body {
     display: grid;
-    grid-template-columns: 172px 1fr 196px;
-    min-height: 392px;
+    grid-template-columns: 196px 1fr 200px;
+    min-height: 432px;
   }
 
   .side {
+    display: flex;
+    flex-direction: column;
     background: var(--sidebar);
     border-right: 1px solid var(--line);
-    padding: 16px 12px;
+    padding: 12px 10px;
     font-size: 0.8rem;
   }
+  .side__brand,
+  .side__cover,
+  .side__add,
+  .side__newchapter {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    padding: 6px 8px;
+    border-radius: var(--r-sm);
+    color: var(--ink-soft);
+  }
+  .side__brand {
+    color: var(--ink-faint);
+    font-size: 0.74rem;
+  }
+  .side__cover {
+    color: var(--ink);
+    margin-top: 2px;
+  }
+  .side__add {
+    color: var(--ink-faint);
+    margin-bottom: 8px;
+  }
+  .side__scroll {
+    flex: 1;
+  }
+  .side__section + .side__section {
+    margin-top: 16px;
+  }
   .side__label {
-    font-size: 0.66rem;
-    letter-spacing: 0.1em;
+    font-size: 0.62rem;
+    letter-spacing: 0.12em;
     text-transform: uppercase;
     color: var(--ink-faint);
     font-weight: 650;
-    margin: 0 0 8px;
+    margin: 0 0 6px;
+    padding-inline: 8px;
   }
-  .side ul {
+  .side__list {
     list-style: none;
-    margin: 0 0 18px;
+    margin: 0;
     padding: 0;
     display: flex;
     flex-direction: column;
-    gap: 2px;
+    gap: 1px;
   }
-  .side li {
+  .row {
+    display: grid;
+    grid-template-columns: 14px 16px 1fr;
+    align-items: center;
+    gap: 4px;
     padding: 5px 8px;
     border-radius: var(--r-sm);
     color: var(--ink-soft);
   }
-  .side li.is-active {
-    background: var(--accent-wash);
-    color: var(--ink);
-    font-weight: 600;
-  }
-  .side__meta li {
+  .row .grip {
     color: var(--ink-faint);
-    font-size: 0.74rem;
+    opacity: 0;
+    display: grid;
+    place-items: center;
+  }
+  .row .grip .i {
+    width: 13px;
+    height: 13px;
+  }
+  .row .num {
+    font-size: 0.72rem;
+    color: var(--ink-faint);
+    text-align: center;
+  }
+  .row .text {
+    display: flex;
+    flex-direction: column;
+    min-width: 0;
+  }
+  .row .title {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .row .meta {
+    font-size: 0.66rem;
+    color: var(--ink-faint);
+    margin-top: 1px;
+  }
+  .row.is-active {
+    background: var(--raised);
+    color: var(--ink);
+    box-shadow: 0 1px 2px rgba(35, 32, 27, 0.08), inset 0 0 0 1px var(--line);
+  }
+  .row.is-active .grip {
+    opacity: 1;
+  }
+  .row.is-active .num {
+    color: var(--ink-soft);
+  }
+  .side__newchapter {
+    color: var(--ink-faint);
+    font-size: 0.76rem;
+    margin-top: 4px;
   }
 
   .page {
     display: flex;
     justify-content: center;
-    padding: 26px 18px;
+    padding: 30px 18px;
     overflow: hidden;
   }
   .page__sheet {
     width: 100%;
-    max-width: 360px;
+    max-width: 372px;
     font-family: var(--font-book);
     font-size: 0.92rem;
-    line-height: 1.62;
+    line-height: 1.6;
     color: var(--ink);
   }
   .page__sheet p {
-    margin: 0 0 0.7em;
-    text-indent: 1.1em;
+    margin: 0;
+    text-indent: 1.3em;
+    text-align: justify;
+    hyphens: auto;
+    -webkit-hyphens: auto;
+  }
+  .page__sheet p + p {
+    margin-top: 0.2em;
   }
   .chapno {
     text-indent: 0 !important;
-    text-align: center;
+    text-align: center !important;
     font-family: var(--font-ui);
-    font-size: 0.62rem;
-    letter-spacing: 0.18em;
+    font-size: 0.6rem;
+    font-weight: 600;
+    letter-spacing: 0.24em;
     text-transform: uppercase;
     color: var(--ink-faint);
-    margin-bottom: 0.4em !important;
+    margin: 0 0 0.5em !important;
   }
   .chaptitle {
+    text-indent: 0;
     text-align: center;
     font-size: 1.5rem;
-    font-weight: 560;
-    margin: 0 0 1.1em;
+    font-weight: 540;
+    letter-spacing: -0.01em;
+    margin: 0 0 1.4em;
+  }
+  .chaptitle + p {
+    text-indent: 0;
   }
   .u-spell {
     text-decoration: wavy underline var(--danger);
@@ -200,17 +364,45 @@
   .dock {
     background: var(--shell);
     border-left: 1px solid var(--line);
-    padding: 16px 14px;
+    padding: 14px 14px 0;
+    overflow: hidden;
+  }
+  .dock__head {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    margin-bottom: 12px;
   }
   .dock__label {
-    font-size: 0.66rem;
-    letter-spacing: 0.1em;
+    font-size: 0.62rem;
+    letter-spacing: 0.12em;
     text-transform: uppercase;
     color: var(--ink-faint);
     font-weight: 650;
-    margin: 0 0 12px;
   }
-  .dock__pdf {
+  .dock__trim {
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
+    font-family: var(--font-ui);
+    font-size: 0.66rem;
+    color: var(--ink-soft);
+    padding: 3px 5px 3px 8px;
+    border: 1px solid var(--line-strong);
+    border-radius: var(--r-sm);
+    background: var(--raised);
+  }
+  .dock__trim .i {
+    width: 12px;
+    height: 12px;
+    color: var(--ink-faint);
+  }
+  .dock__pages {
+    display: flex;
+    flex-direction: column;
+    gap: 14px;
+  }
+  .dock__page {
     position: relative;
     aspect-ratio: 5 / 8;
     background: #fcfbf7;
@@ -219,26 +411,18 @@
     padding: 18px 16px 22px;
     overflow: hidden;
     color: #2a2622;
+    flex: none;
   }
-  .dock__pdf .rh {
-    display: block;
-    font-family: var(--font-ui);
-    font-size: 4.4px;
-    letter-spacing: 0.16em;
-    color: #b3ab9c;
-    text-align: center;
-    margin-bottom: 14px;
-  }
-  .dock__pdf .pch {
+  .dock__page .pch {
     font-family: var(--font-ui);
     font-size: 4px;
     letter-spacing: 0.22em;
     text-transform: uppercase;
     color: #9b9484;
     text-align: center;
-    margin: 0 0 4px;
+    margin: 6px 0 4px;
   }
-  .dock__pdf .pdt {
+  .dock__page .pdt {
     font-family: var(--font-book);
     font-size: 9px;
     font-weight: 560;
@@ -246,19 +430,21 @@
     text-align: center;
     margin: 0 0 11px;
   }
-  .dock__pdf .pp {
+  .dock__page .pp {
     font-family: var(--font-book);
     font-size: 5.6px;
     line-height: 1.62;
     text-align: justify;
+    hyphens: auto;
+    -webkit-hyphens: auto;
     text-indent: 1.3em;
     margin: 0 0 0.5em;
     color: #2a2622;
   }
-  .dock__pdf .pp--first {
+  .dock__page .pp--first {
     text-indent: 0;
   }
-  .dock__pdf .pg {
+  .dock__page .pg {
     position: absolute;
     bottom: 9px;
     left: 0;
@@ -268,10 +454,13 @@
     font-size: 5px;
     color: #b3ab9c;
   }
+  .dock__page--peek {
+    padding-top: 18px;
+  }
 
   @media (max-width: 720px) {
     .win__body {
-      grid-template-columns: 1fr 168px;
+      grid-template-columns: 1fr 180px;
     }
     .side {
       display: none;
diff --git a/website/src/components/ClosingCta.astro b/website/src/components/ClosingCta.astro
index 0cfd384..8db44e9 100644
--- a/website/src/components/ClosingCta.astro
+++ b/website/src/components/ClosingCta.astro
@@ -38,12 +38,6 @@ import OfferBadge from "./OfferBadge.astro";
     justify-content: center;
     margin-top: 32px;
   }
-  .cta__btns :global(.dl) {
-    align-items: center;
-  }
-  .cta__btns :global(.dl__os) {
-    justify-content: center;
-  }
   .cta__offer {
     display: flex;
     justify-content: center;
diff --git a/website/src/components/DownloadButtons.astro b/website/src/components/DownloadButtons.astro
index 7f23019..4f16c21 100644
--- a/website/src/components/DownloadButtons.astro
+++ b/website/src/components/DownloadButtons.astro
@@ -22,7 +22,6 @@ const { large = false } = Astro.props;
   </a>
 
   <div class="dl__os">
-    <span class="dl__also">Also for</span>
     {
       platforms.map((p) => (
         <a
@@ -32,7 +31,7 @@ const { large = false } = Astro.props;
           rel="noopener"
           download
           aria-label={`Download for ${p.label}`}
-          title={p.label}
+          title={`Download for ${p.label}`}
         >
           <img class="dl__logo" src={`/logos/${p.logo}`} alt={p.label} />
         </a>
@@ -45,38 +44,36 @@ const { large = false } = Astro.props;
   .dl {
     display: flex;
     flex-direction: column;
-    gap: 14px;
-    align-items: flex-start;
+    align-items: center;
+    gap: 16px;
   }
   .dl__os {
     display: flex;
     align-items: center;
-    gap: 10px;
-    flex-wrap: wrap;
-  }
-  .dl__also {
-    font-size: 0.82rem;
-    color: var(--ink-faint);
-    font-weight: 500;
+    justify-content: center;
+    gap: 12px;
   }
   .dl__chip {
     display: inline-flex;
     align-items: center;
     justify-content: center;
-    width: 40px;
-    height: 40px;
+    width: 44px;
+    height: 44px;
     background: #ffffff;
     border: 1px solid var(--line-strong);
     border-radius: var(--r-md);
-    transition: box-shadow 0.18s var(--ease), transform 0.18s var(--ease);
+    box-shadow: var(--shadow-page);
+    transition:
+      box-shadow 0.18s var(--ease),
+      transform 0.18s var(--ease);
   }
   .dl__chip:hover {
     transform: translateY(-1px);
     box-shadow: var(--shadow-pop);
   }
   .dl__logo {
-    width: 20px;
-    height: 20px;
+    width: 22px;
+    height: 22px;
     object-fit: contain;
   }
 </style>
diff --git a/website/src/components/DownloadScript.astro b/website/src/components/DownloadScript.astro
index 615028b..8083a00 100644
--- a/website/src/components/DownloadScript.astro
+++ b/website/src/components/DownloadScript.astro
@@ -36,6 +36,18 @@ const { repo, releasesUrl } = site;
     if (label) label.textContent = "Download for " + LABELS[os];
   });
 
+  document.querySelectorAll(".dl__alt [data-download-os]").forEach((el) => {
+    if (el.dataset.downloadOs === os) el.remove();
+  });
+
+  document.querySelectorAll("[data-osrow]").forEach((row) => {
+    const primary = row.querySelector(`[data-download-os="${os}"]`);
+    if (primary) {
+      primary.classList.add("is-detected");
+      row.prepend(primary);
+    }
+  });
+
   (async () => {
     try {
       const res = await fetch(`https://api.github.com/repos/${repo}/releases/latest`, {
diff --git a/website/src/components/Hero.astro b/website/src/components/Hero.astro
index 8b87377..b39211f 100644
--- a/website/src/components/Hero.astro
+++ b/website/src/components/Hero.astro
@@ -1,7 +1,7 @@
 ---
 import AppWindow from "./AppWindow.astro";
-import DownloadButtons from "./DownloadButtons.astro";
 import OfferBadge from "./OfferBadge.astro";
+import { site, platforms } from "../data/site";
 ---
 
 <section class="hero">
@@ -11,63 +11,126 @@ import OfferBadge from "./OfferBadge.astro";
       <span class="book-accent">Own</span> every word.
     </h1>
     <p class="lede hero__lede">
-      Margin is a calm, offline writing studio for authors. Write your book, format it
-      beautifully, and send it to every store and to print, all from your own machine. No
-      subscription, no account. Buy once, own it forever.
+      A calm, offline studio to write, format, and publish your book to every store and to
+      print. No subscription, no account. Buy once, own it forever.
     </p>
-
-    <div class="hero__cta">
-      <DownloadButtons large />
-    </div>
-    <div class="hero__offer">
-      <OfferBadge />
-    </div>
   </div>
 
   <div class="container hero__art">
     <AppWindow />
   </div>
+
+  <div class="container hero__get" id="download">
+    <div class="hero__buttons" data-osrow>
+      {
+        platforms.map((p) => (
+          <a
+            class="osbtn"
+            href={site.releasesUrl}
+            data-download-os={p.id}
+            rel="noopener"
+            download
+          >
+            <img class="osbtn__icon" src={`/logos/${p.logo}`} alt="" />
+            <span>Download for {p.label}</span>
+          </a>
+        ))
+      }
+    </div>
+    <p class="hero__meta">
+      <span data-version>v0.1.2</span> · Works offline · No account
+    </p>
+    <div class="hero__offer">
+      <OfferBadge />
+    </div>
+  </div>
 </section>
 
 <style>
   .hero {
-    padding-top: clamp(48px, 7vw, 92px);
-    padding-bottom: clamp(40px, 6vw, 72px);
+    padding-top: clamp(36px, 4.5vw, 60px);
+    padding-bottom: clamp(48px, 6vw, 80px);
     background:
       radial-gradient(120% 90% at 50% -10%, var(--paper) 0%, transparent 60%),
       var(--shell);
   }
   .hero__head {
     text-align: center;
-    max-width: 760px;
+    max-width: 720px;
   }
   h1 {
-    font-size: clamp(2.6rem, 1.6rem + 4.4vw, 4.5rem);
+    font-size: clamp(2.4rem, 1.6rem + 3.4vw, 3.9rem);
     letter-spacing: -0.02em;
-    margin-bottom: 22px;
+    margin-bottom: 18px;
   }
   .hero__lede {
     margin-inline: auto;
-    max-width: 56ch;
+    max-width: 50ch;
   }
-  .hero__cta {
+  .hero__art {
+    margin-top: clamp(32px, 4vw, 48px);
+    max-width: 1000px;
+  }
+  .hero__get {
+    margin-top: clamp(24px, 3vw, 32px);
+    scroll-margin-top: 96px;
+  }
+  .hero__buttons {
     display: flex;
+    flex-wrap: wrap;
     justify-content: center;
-    margin-top: 34px;
+    gap: 12px;
   }
-  .hero__cta :global(.dl) {
+  .osbtn {
+    display: inline-flex;
     align-items: center;
+    gap: 10px;
+    padding: 0.82em 1.35em;
+    background: #ffffff;
+    border: 1px solid var(--line-strong);
+    border-radius: 999px;
+    color: #23201b;
+    font-family: var(--font-ui);
+    font-size: 1rem;
+    font-weight: 600;
+    box-shadow: var(--shadow-page);
+    transition:
+      transform 0.18s var(--ease),
+      box-shadow 0.18s var(--ease),
+      border-color 0.18s var(--ease);
   }
-  .hero__cta :global(.dl__os) {
-    justify-content: center;
+  .osbtn:hover {
+    transform: translateY(-1px);
+    box-shadow: var(--shadow-pop);
+  }
+  .osbtn.is-detected {
+    border-color: var(--ink);
+  }
+  .osbtn__icon {
+    width: 18px;
+    height: 18px;
+    flex: none;
+    object-fit: contain;
+  }
+  .hero__meta {
+    margin: 16px 0 0;
+    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
+    font-size: 0.8rem;
+    color: var(--ink-faint);
+    text-align: center;
   }
   .hero__offer {
     display: flex;
     justify-content: center;
-    margin-top: 30px;
+    margin-top: 22px;
   }
-  .hero__art {
-    margin-top: clamp(44px, 6vw, 72px);
-    max-width: 1000px;
+  @media (max-width: 480px) {
+    .hero__buttons {
+      flex-direction: column;
+      align-items: stretch;
+    }
+    .osbtn {
+      justify-content: center;
+    }
   }
 </style>
diff --git a/website/src/components/Nav.astro b/website/src/components/Nav.astro
index 49532df..8a0fbe8 100644
--- a/website/src/components/Nav.astro
+++ b/website/src/components/Nav.astro
@@ -19,6 +19,12 @@ import Logo from "./Logo.astro";
     </nav>
 
     <div class="nav__actions">
+      <a class="btn nav__cta" href="#download">
+        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" aria-hidden="true">
+          <path d="M12 3v12m0 0 4-4m-4 4-4-4M5 21h14" stroke-linecap="round" stroke-linejoin="round"></path>
+        </svg>
+        Download
+      </a>
       <button class="iconlink" id="theme-toggle" aria-label="Toggle theme" type="button">
         <svg class="i-sun" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" aria-hidden="true">
           <circle cx="12" cy="12" r="4"></circle>
@@ -89,6 +95,14 @@ import Logo from "./Logo.astro";
     align-items: center;
     gap: 10px;
   }
+  .nav__cta {
+    padding: 0.5em 1.05em;
+    font-size: 0.9rem;
+  }
+  .nav__cta svg {
+    width: 1em;
+    height: 1em;
+  }
   .iconlink {
     display: inline-flex;
     align-items: center;
diff --git a/website/src/components/OfferBadge.astro b/website/src/components/OfferBadge.astro
index 2b3118b..a268d2f 100644
--- a/website/src/components/OfferBadge.astro
+++ b/website/src/components/OfferBadge.astro
@@ -20,7 +20,6 @@ const { cap, left } = site.launch;
     border-radius: 999px;
     background: color-mix(in srgb, var(--good) 12%, var(--paper));
     border: 1px solid color-mix(in srgb, var(--good) 32%, transparent);
-    box-shadow: var(--shadow-page);
     font-size: 0.9rem;
     font-weight: 600;
     color: var(--ink);
diff --git a/website/src/components/Pricing.astro b/website/src/components/Pricing.astro
index 2c10ea2..a90d40c 100644
--- a/website/src/components/Pricing.astro
+++ b/website/src/components/Pricing.astro
@@ -182,12 +182,6 @@ const included = [
     display: flex;
     justify-content: center;
   }
-  .price-card__cta :global(.dl) {
-    align-items: center;
-  }
-  .price-card__cta :global(.dl__os) {
-    justify-content: center;
-  }
   .price-card__note {
     margin-top: 26px;
     font-size: 0.84rem;
diff --git a/website/src/data/site.ts b/website/src/data/site.ts
index a9d00d1..c33b12c 100644
--- a/website/src/data/site.ts
+++ b/website/src/data/site.ts
@@ -16,7 +16,7 @@ export const site = {
     left: 12,
   },
 
-  supportEmail: "hello@margin.studio",
+  supportEmail: "pj@73ai.org",
 
   // Repo that hosts the release files. Used only to resolve the right download
   // per OS at runtime. It is never shown to the reader.