diff --git a/ROADMAP.md b/ROADMAP.md
index b5a879e69..62a5e70db 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~15 points (60% → 75% ready for real work) and ~150–230 h away
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (progress log: Indonesian proofing, #498; previously trivial: progress log: DOCX glossary documents (building blocks); previously trivial: progress log: Read Mode keeps the keyboard and shows whole, unobscured columns, #1772); previously trivial: progress log: font list entries of tall-ascent fonts no longer cut off, #2570); previously trivial: progress log: Split Cells and Convert Text to Table dialogs follow the Word check, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout fills the window width, #1876; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717); previously trivial: progress log: a copied equation also goes in the MathML clipboard formats, #1297); previously trivial: table style editor formats every part, #714; previously trivial: VML freeforms read and kept on save; previously trivial: progress log: consistent preferred cell widths; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: progress log: grouped `flowChartOr` shapes draw their circle and crossing spokes; previously trivial: progress log: copies keep their formatting in other programs, #1523; previously trivial: progress log: privacy options on save, #1062; previously trivial: progress log: equation pictures in theme colours on Windows, #1002; previously trivial: symbol fonts, #776; previously trivial: the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (progress log: Indonesian proofing, #498; previously trivial: progress log: DOCX glossary documents (building blocks); previously trivial: progress log: Read Mode keeps the keyboard and shows whole, unobscured columns, #1772); previously trivial: progress log: font list entries of tall-ascent fonts no longer cut off, #2570); previously trivial: progress log: Split Cells and Convert Text to Table dialogs follow the Word check, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout fills the window width, #1876; previously trivial: progress log: Different First Page headers reachable from page 1, #2826; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717)); previously trivial (table style editor formats every part, #714); previously trivial: VML freeforms read and kept on save; previously trivial: progress log: consistent preferred cell widths; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: progress log: grouped `flowChartOr` shapes draw their circle and crossing spokes; previously trivial: progress log: copies keep their formatting in other programs, #1523; previously trivial: progress log: privacy options on save, #1062; previously trivial: progress log: equation pictures in theme colours on Windows, #1002; previously trivial: symbol fonts, #776; previously trivial: the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 > **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-17 · **Change:** trivial (progress log: pasted blockquotes are indented paragraphs, #1270; previously trivial: progress log: print-area strings translated in every catalog; previously trivial: progress log: comments readable in the dark theme, #2045; previously trivial: progress log: ODT sections, #1379; previously trivial: progress log: table deletes, Change Case and Unlink Fields respect Track Changes and locked content controls, #1329; previously trivial: progress log: rounded rectangle corners, #1476; previously trivial: progress log: Save As type list, #1399; previously trivial: progress log: privacy options on save, #1062; previously trivial: progress log: equation pictures in theme colours on Windows, #1002; previously trivial: symbol fonts, #776; previously trivial: the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 > **Printing update:** 2026-10-12 · direct desktop printing through craft-print; details below.
 
@@ -152,6 +152,7 @@ Ranked, to beta (detail and remaining milestones in [docs/roadmap.md](docs/roadm
 | 2026-10-14 | DOCX row table border exceptions render and survive saving. Explicit cell borders win; a row exception does not change other rows. |
 | 2026-10-14 | Tab stops edited on the ruler: the corner selector picks Left/Center/Right/Decimal/Bar, a click sets a stop (Alt skips the snap), dragging moves it with a guide line and position tooltip, dragging off the ruler clears it; markers draw per kind and mirror for RTL; one `para.tabs` call and one undo step per gesture |
 | 2026-10-12 | Fields keep `w:dirty` through DOCX saves (#877): a begin marker flagged by a generator that couldn't compute a result (pandoc-style TOC placeholders) keeps the flag on open/save — as a buffered field or a range field — so Word still refreshes it on open; computing a result (Update Field, Update Table) clears it, like Word's F9 |
+| 2026-10-18 | Different First Page works from page 1 (#2826): Insert › Header and Edit Header with the caret on page 1, and a double-click there while another header is being edited, go into page 1's own header instead of the default one page 1 no longer shows. |
 | 2026-10-17 | Language dialog keeps inherited proofing language and no-proof choices (#2717). Opening and accepting unchanged no longer replaces style-derived values with English US and proofing enabled. |
 | 2026-10-14 | Consistent preferred cell widths override a stale table grid when both totals agree, for fixed and AutoFit tables. Conflicting widths, spans and percentages remain unchanged. |
 | 2026-10-14 | Legacy VML freeforms (`v:shape` with its own `path`), such as the rule lines in many older headers, are read as freeform shapes: they show on screen and in PDFs and are saved back as DrawingML custom geometry instead of vanishing |
@@ -418,6 +419,7 @@ Ranked, to beta (detail and remaining milestones in [docs/roadmap.md](docs/roadm
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-18 | trivial | Progress log: Different First Page headers reachable from page 1 (#2826) |
 | 2026-10-16 | trivial | Progress log: Web Layout fills the window width (#1876) |
 | 2026-10-17 | trivial | Progress log: DOCX glossary documents (building blocks) |
 | 2026-10-17 | trivial | Language dialog keeps inherited proofing language and no-proof choices (#2717); readiness estimates unchanged |
diff --git a/crates/engine/src/cmd/insert.rs b/crates/engine/src/cmd/insert.rs
index 3208f733c..2b76921f6 100644
--- a/crates/engine/src/cmd/insert.rs
+++ b/crates/engine/src/cmd/insert.rs
@@ -542,21 +542,30 @@ fn bookmark(s: &mut Session, v: &Value) -> CmdResult {
     sel_result(s)
 }
 
+/// The header (or footer) of the caret's section in the slot the caret's page uses (first page,
+/// even page or the default), made when there is none: with Different First Page on, a header
+/// inserted on page 1 is the one page 1 shows (#2826).
 fn hf_part(s: &mut Session, header: bool) -> u32 {
     let block = s.sel.focus.path.0.first().copied().unwrap_or(0) as usize;
-    let sect = s.doc.section_mut(block).clone();
-    let existing = if header { sect.headers.default } else { sect.footers.default };
+    let layout = s.layout();
+    let page = if s.sel.focus.story == StoryRef::Body { layout.page_of(&s.sel.focus) } else { Some(s.page_hint) };
+    let slot = page.and_then(|pg| layout.pages.get(pg)).map(|pg| pg.hf_slot).unwrap_or_default();
+    fn slot_of(slot: wordcraft_layout::HfSlot, set: &mut wordcraft_doc::section::HeaderSet) -> &mut Option<u32> {
+        match slot {
+            wordcraft_layout::HfSlot::First => &mut set.first,
+            wordcraft_layout::HfSlot::Even => &mut set.even,
+            wordcraft_layout::HfSlot::Default => &mut set.default,
+        }
+    }
+    let mut sect = s.doc.section_mut(block).clone();
+    let existing = *slot_of(slot, if header { &mut sect.headers } else { &mut sect.footers });
     if let Some(id) = existing.filter(|id| s.doc.parts.contains_key(id)) {
         return id;
     }
     let style = if header { "Header" } else { "Footer" };
     let id = s.doc.add_part(if header { PartKind::Header } else { PartKind::Footer }, vec![para_block(Paragraph::new().styled(style))]);
     let sect = s.doc.section_mut(block);
-    if header {
-        sect.headers.default = Some(id);
-    } else {
-        sect.footers.default = Some(id);
-    }
+    *slot_of(slot, if header { &mut sect.headers } else { &mut sect.footers }) = Some(id);
     id
 }
 
@@ -595,7 +604,12 @@ fn header_footer(s: &mut Session, v: &Value, header: bool) -> CmdResult {
 }
 
 fn edit_hf(s: &mut Session, v: &Value, header: bool) -> CmdResult {
-    let page = p::u64(v, "page").map(|page| usize::try_from(page).unwrap_or(usize::MAX));
+    let mut page = p::u64(v, "page").map(|page| usize::try_from(page).unwrap_or(usize::MAX));
+    if page.is_none() && s.sel.focus.story == StoryRef::Body {
+        // The caret's page: with Different First Page on, page 1 edits its own header (#2826).
+        let focus = s.sel.focus.clone();
+        page = s.layout().page_of(&focus);
+    }
     let shown = match page {
         Some(page) => shown_hf(s, page, header)?,
         None => {
@@ -979,6 +993,29 @@ mod tests {
         assert!(s.run("insert.editHeader", &json!({"page": u64::MAX})).is_err());
     }
 
+    /// #2826: with Different First Page on, Insert › Header and Edit Header with the caret on
+    /// page 1 give page 1 its own header; page 2 keeps the default one.
+    #[test]
+    fn different_first_page_header_is_reachable_from_page_one() {
+        let mut s = two_pages();
+        s.run("insert.header", &json!({"text": "Head"})).unwrap();
+        s.run("insert.closeHeader", &json!({})).unwrap();
+        let head = s.doc.last_section.headers.default.unwrap();
+        s.run("layout.differentFirstPage", &json!({"value": true})).unwrap();
+        assert_eq!(s.layout().pages[0].header_story, None, "page 1 shows the empty first-page header");
+        s.sel = Selection::caret(s.doc.start_of(StoryRef::Body));
+        let first = s.run("insert.header", &json!({"preset": "title"})).unwrap()["story"].as_u64().unwrap() as u32;
+        assert_ne!(first, head);
+        assert_eq!(s.doc.last_section.headers.first, Some(first));
+        let pages = s.layout().pages.clone();
+        assert_eq!((pages[0].header_story, pages[1].header_story), (Some(first), Some(head)));
+        // Edit Footer from page 1 (no page given): page 1's own footer, not the default.
+        s.run("insert.closeHeader", &json!({})).unwrap();
+        s.sel = Selection::caret(s.doc.start_of(StoryRef::Body));
+        let foot = s.run("insert.editFooter", &json!({})).unwrap()["story"].as_u64().unwrap() as u32;
+        assert_eq!((s.doc.last_section.footers.first, s.doc.last_section.footers.default), (Some(foot), None));
+    }
+
     fn two_pages() -> Session {
         let mut s = Session::new(wordcraft_doc::Document::new());
         s.run("text.insert", &json!({"text": "One"})).unwrap();
diff --git a/crates/ui-egui/src/canvas.rs b/crates/ui-egui/src/canvas.rs
index 33e5835fd..884a68621 100644
--- a/crates/ui-egui/src/canvas.rs
+++ b/crates/ui-egui/src/canvas.rs
@@ -2281,8 +2281,10 @@ fn mouse(app: &mut WordApp, ui: &Ui, resp: &egui::Response, rects: &[Rect], layo
         None
     };
     if resp.double_clicked() {
-        if let Some((_, header)) = hf_zone
-            && story == StoryRef::Body
+        // Also from another header/footer: with Different First Page on, page 1's header is not
+        // the one being edited on page 2 (#2826).
+        if let Some((shown, header)) = hf_zone
+            && (story == StoryRef::Body || (shown != Some(story) && matches!(part_kind(app, story), Some(PartKind::Header | PartKind::Footer))))
         {
             let id = if header { "insert.editHeader" } else { "insert.editFooter" };
             if app.run(id, json!({ "page": page })).is_ok()
@@ -3970,6 +3972,49 @@ mod tests {
         assert_eq!(h.state().session.doc.plain_text(footer), "Page foot");
     }
 
+    /// #2826: editing the default header, then turning on Different First Page: a double-click in
+    /// page 1's top margin goes into page 1's own (new) header, and typing lands there.
+    #[test]
+    fn double_click_reaches_the_first_page_header_from_another_header() {
+        use egui::{Event, PointerButton};
+        let mut a = WordApp::new(wordcraft_engine::Session::new(wordcraft_doc::Document::new()), Default::default());
+        a.run("text.insert", json!({"text": "Body text"})).unwrap();
+        a.run("view.commentsPane", json!({"value": false})).unwrap();
+        a.run("insert.header", json!({"text": "Head"})).unwrap();
+        let head = a.session.sel.focus.story;
+        a.run("layout.differentFirstPage", json!({"value": true})).unwrap();
+        let mut h = egui_kittest::Harness::builder().with_size(egui::vec2(1440.0, 2200.0)).with_step_dt(1.0 / 60.0).build_ui_state(
+            |ui, app: &mut WordApp| {
+                let ctx = ui.ctx().clone();
+                app.logic(&ctx);
+                app.ui(ui);
+            },
+            a,
+        );
+        for _ in 0..6 {
+            h.step();
+        }
+        let page = h.state_mut().session.layout().pages[0].clone();
+        assert!(page.header_story.is_none());
+        let at = page_to_screen(h.state_mut(), 0, page.body.x + 20.0, page.body.y / 2.0).expect("top margin on screen");
+        h.event(Event::PointerMoved(at));
+        for _ in 0..2 {
+            h.event(Event::PointerButton { pos: at, button: PointerButton::Primary, pressed: true, modifiers: Default::default() });
+            h.step();
+            h.event(Event::PointerButton { pos: at, button: PointerButton::Primary, pressed: false, modifiers: Default::default() });
+            h.step();
+        }
+        let first = h.state().session.sel.focus.story;
+        assert_eq!(part_kind(h.state(), first), Some(PartKind::Header));
+        assert_ne!(first, head, "page 1's own header, not the default one");
+        h.event(Event::Text("Cover".into()));
+        for _ in 0..3 {
+            h.step();
+        }
+        assert_eq!(h.state().session.doc.plain_text(first), "Cover");
+        assert_eq!(h.state_mut().session.layout().pages[0].header_story.map(StoryRef::Part), Some(first));
+    }
+
     /// #513: right-clicking a picture selects it and offers Wrap Text, as in Word; choosing
     /// Square there wraps text around it.
     #[test]
diff --git a/docs/ui-parity.md b/docs/ui-parity.md
index c86fc4b28..eb3fbb08b 100644
--- a/docs/ui-parity.md
+++ b/docs/ui-parity.md
@@ -1,6 +1,6 @@
 # UI parity with Microsoft Word
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (a copied equation also goes in the clipboard's MathML formats, #1297; previously trivial: Read Mode keeps the keyboard, shows whole columns and keeps text clear of the page-turn bar, #1772); previously trivial: font list entries of tall-ascent fonts sit in their row, not cut off, #2570); previously trivial: Split Cells and Convert Text to Table dialogs follow Word's merged-cell limits and Initial column width, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout text fills the window width, #1876; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717)); previously trivial: comment balloons readable in the dark theme, #2045; previously trivial (Modify Table Style formats every table style part, #714); previously trivial: a click on the ribbon chrome hands the keyboard to the page in the same frame, #1093 follow-up; previously trivial: Page Setup vertical alignment, #1320; previously trivial: the app opens on the Home tab every launch, as in Word; previously trivial: no document behind the Start screen, #1129; previously trivial: equation pictures share a few textures, #1002; previously trivial: selection bar in the left margin, #856; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously major: first version; ribbon, dialogs, shortcuts and on-canvas interaction measured from `crates/ui-egui` and the command registry) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (Different First Page headers reachable from page 1, #2826; previously trivial: a copied equation also goes in the clipboard's MathML formats, #1297; previously trivial: Read Mode keeps the keyboard, shows whole columns and keeps text clear of the page-turn bar, #1772); previously trivial: font list entries of tall-ascent fonts sit in their row, not cut off, #2570); previously trivial: Split Cells and Convert Text to Table dialogs follow Word's merged-cell limits and Initial column width, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout text fills the window width, #1876; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717)); previously trivial: comment balloons readable in the dark theme, #2045; previously trivial (Modify Table Style formats every table style part, #714); previously trivial: a click on the ribbon chrome hands the keyboard to the page in the same frame, #1093 follow-up; previously trivial: Page Setup vertical alignment, #1320; previously trivial: the app opens on the Home tab every launch, as in Word; previously trivial: no document behind the Start screen, #1129; previously trivial: equation pictures share a few textures, #1002; previously trivial: selection bar in the left margin, #856; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously major: first version; ribbon, dialogs, shortcuts and on-canvas interaction measured from `crates/ui-egui` and the command registry) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 
 How WordCraft looks and feels next to Word: ribbon, dialogs, panes, keyboard, mouse and touch.
 Typing behaviour has its own checklist ([`typing-parity.md`](typing-parity.md)). All assets are our
@@ -38,7 +38,7 @@ Document title opens Rename Document; the account badge opens Options › Genera
 | Selection: word/sentence/paragraph clicks, dragging after a double-click/triple-click/Ctrl+click extends by whole words/paragraphs/sentences (#549), Shift extend, F8 extend mode, column (Alt+drag, #237) | ✅ | ✅ | 90% | 1 |
 | Zoom: Ctrl+scroll, pinch (#179), zoom buttons (#232), pages side by side when zoomed out (#251), still one per row after One Page or Page Width (#768) | ✅ | ✅ | 85% | — |
 | Selection: word/sentence/paragraph clicks, dragging after a double-click/triple-click/Ctrl+click extends by whole words/paragraphs/sentences (#549), Shift extend, F8 extend mode, column (Alt+drag, #237), selection bar in the left margin (click a line, double-click a paragraph, triple-click or Ctrl+click everything, drag by lines, Shift+click extends; #856) | ✅ Missing: the selection bar in the right margin for right-to-left paragraphs, beside table rows, and Word's right-pointing arrow cursor (egui has none; the plain arrow shows) | ✅ | 92% | 1 |
-| Headers and footers on the page: double-click the top or bottom margin to edit them, the body to leave | ✅ in Print Layout, also on a page with none yet: the header or footer that page shows is created (first page, even page or the default) and the caret put in it; one left empty is taken away again on leaving and is never saved (#960). Making one is an undo step, refused in a protected document. On a later section's page with no header anywhere it goes in the first section and shows on every section linked to it, as Word links to the previous section by default. Web Layout, Draft and Read Mode show no margins and leave it alone | ✅ | 95% | 0.5 |
+| Headers and footers on the page: double-click the top or bottom margin to edit them, the body to leave | ✅ in Print Layout, also on a page with none yet: the header or footer that page shows is created (first page, even page or the default) and the caret put in it; one left empty is taken away again on leaving and is never saved (#960). Making one is an undo step, refused in a protected document. On a later section's page with no header anywhere it goes in the first section and shows on every section linked to it, as Word links to the previous section by default. With Different First Page (or Odd & Even) on, a double-click goes into the header that page shows even from another header being edited, and Insert › Header/Footer and Edit Header with the caret on page 1 use page 1's own (#2826). Web Layout, Draft and Read Mode show no margins and leave it alone | ✅ | 95% | 0.5 |
 | Zoom: Ctrl+scroll, pinch (#179), zoom buttons (#232), pages side by side when zoomed out (#251) | ✅ | ✅ | 85% | — |
 | Touchpad smooth/inertial scroll | ✅ (#252) | ✅ | 90% | — |
 | Web Layout width | Text wraps to the whole work area (window width at the current zoom, 144–20,000 pt) and re-wraps once a window resize has settled (not on every frame of a drag) or at once on a zoom, keeping the caret in view; the sheet runs edge to edge with no centred page. Draft and Outline keep their 800 pt column; headless sessions keep 800 pt (#1876) | text across the window | 95% | — |
@@ -63,6 +63,7 @@ The Language dialog reads effective character formatting, including document def
 | Date | Change | Summary |
 |---|---|---|
 | 2026-10-16 | trivial | Web Layout text fills the window width and re-wraps once a resize settles or at once on a zoom, instead of a fixed 800 pt column; Draft and Outline keep their 800 pt column (#1876) |
+| 2026-10-18 | trivial | Different First Page: double-clicking page 1's header while editing another one goes into page 1's own; Insert › Header/Footer/Page Number and Edit Header/Footer use the header the caret's page shows (first, even or default) instead of always the default (#2826) |
 | 2026-10-17 | trivial | Language dialog keeps inherited proofing language and no-proof choices (#2717); readiness estimates unchanged |
 | 2026-10-16 | trivial | Create Source: automatic Tag like Word's (`Smi20`, `Kim001`); Edit Source keeps the Tag and citations show the new Author and Year (#2094; Word for Mac 16.113.4, user-checked) |
 | 2026-10-18 | trivial | Split Cells merged-cell limits and equal parts, Convert Text to Table Initial column width, both from the Word check (#2592) |