diff --git a/src/lib/markdown.ts b/src/lib/markdown.ts
index 0a3bc55..86923c0 100644
--- a/src/lib/markdown.ts
+++ b/src/lib/markdown.ts
@@ -1,9 +1,9 @@
 import MarkdownIt from "markdown-it";
 import { type KatexPluginEnv, katexPlugin } from "./markdown/katex-plugin.ts";
 import {
-	type WikilinkTarget,
-	type WikilinkEnv,
 	parseWikilinkTarget,
+	type WikilinkEnv,
+	type WikilinkTarget,
 	wikilinkPlugin,
 } from "./markdown/wikilink-plugin.ts";
 import { type VizPluginEnv, vizPlugin } from "./viz/plugin.ts";
@@ -88,11 +88,12 @@ export function extractWikilinks(
 				content.slice(pos + 2, closeIdx),
 				currentWikiSlug,
 			);
-			if (target) {
-				const key = `${target.wikiSlug ?? ""}:${target.noteSlug}`;
+			if (target && (target.noteSlug || target.wikiSlug)) {
+				const noteSlug = target.noteSlug || "home";
+				const key = `${target.wikiSlug ?? ""}:${noteSlug}`;
 				if (!seen.has(key)) {
 					seen.add(key);
-					links.push(target);
+					links.push({ ...target, noteSlug });
 				}
 			}
 			pos = closeIdx + 2;
diff --git a/src/lib/markdown/wikilink-plugin.ts b/src/lib/markdown/wikilink-plugin.ts
index 85dcf4d..7f0e6ff 100644
--- a/src/lib/markdown/wikilink-plugin.ts
+++ b/src/lib/markdown/wikilink-plugin.ts
@@ -1,7 +1,7 @@
 import type MarkdownIt from "markdown-it";
 import type StateInline from "markdown-it/lib/rules_inline/state_inline.mjs";
 import { escapeHtml } from "../html.ts";
-import { noteUrl } from "../urls.ts";
+import { noteUrl, wikiUrl } from "../urls.ts";
 
 export interface WikilinkEnv {
 	wikiSlug?: string;
@@ -11,6 +11,7 @@ export interface WikilinkTarget {
 	wikiSlug?: string;
 	noteSlug: string;
 	label: string;
+	section?: string;
 }
 
 export function parseWikilinkTarget(
@@ -21,19 +22,37 @@ export function parseWikilinkTarget(
 	if (!trimmed) return null;
 
 	const pipeIdx = trimmed.indexOf("|");
-	const rawTarget = (pipeIdx >= 0 ? trimmed.slice(0, pipeIdx) : trimmed).trim();
-	const rawLabel = (pipeIdx >= 0 ? trimmed.slice(pipeIdx + 1) : trimmed).trim();
+	const beforePipe = (
+		pipeIdx >= 0 ? trimmed.slice(0, pipeIdx) : trimmed
+	).trim();
+	const rawLabel = (pipeIdx >= 0 ? trimmed.slice(pipeIdx + 1) : "").trim();
+
+	// Split path from section fragment
+	const hashIdx = beforePipe.indexOf("#");
+	const rawTarget = (
+		hashIdx >= 0 ? beforePipe.slice(0, hashIdx) : beforePipe
+	).trim();
+	const section =
+		hashIdx >= 0 ? beforePipe.slice(hashIdx + 1).trim() : undefined;
+
+	// Anchor-only link [[#section]]
+	if (!rawTarget && section) {
+		return { noteSlug: "", label: rawLabel || section, section };
+	}
+
 	if (!rawTarget) return null;
 
+	// Cross-wiki detection: wiki/note or wiki/
 	const separatorIdx = rawTarget.indexOf("/");
-	if (separatorIdx > 0 && separatorIdx < rawTarget.length - 1) {
+	if (separatorIdx > 0) {
 		const wikiSlug = rawTarget.slice(0, separatorIdx).trim();
 		const noteSlug = rawTarget.slice(separatorIdx + 1).trim();
-		if (wikiSlug && noteSlug) {
+		if (wikiSlug) {
 			return {
 				wikiSlug,
 				noteSlug,
-				label: rawLabel || `${wikiSlug}/${noteSlug}`,
+				label: rawLabel || (noteSlug ? `${wikiSlug}/${noteSlug}` : wikiSlug),
+				...(section ? { section } : {}),
 			};
 		}
 	}
@@ -42,6 +61,7 @@ export function parseWikilinkTarget(
 		...(currentWikiSlug ? { wikiSlug: currentWikiSlug } : {}),
 		noteSlug: rawTarget,
 		label: rawLabel || rawTarget,
+		...(section ? { section } : {}),
 	};
 }
 
@@ -57,12 +77,29 @@ export function wikilinkPlugin(mdi: MarkdownIt): void {
 
 		if (!silent) {
 			const env = state.env as WikilinkEnv;
-			const target = parseWikilinkTarget(src.slice(pos + 2, closeIdx), env.wikiSlug);
+			const target = parseWikilinkTarget(
+				src.slice(pos + 2, closeIdx),
+				env.wikiSlug,
+			);
 			if (!target) return false;
 
-			const href = target.wikiSlug
-				? noteUrl(target.wikiSlug, target.noteSlug)
-				: target.noteSlug;
+			let href: string;
+			if (!target.wikiSlug && !target.noteSlug && target.section) {
+				// [[#section]] — anchor only
+				href = `#${target.section}`;
+			} else if (!target.noteSlug && target.wikiSlug) {
+				// [[wiki/]] — wiki home page
+				href = wikiUrl(target.wikiSlug);
+				if (target.section) href += `#${target.section}`;
+			} else if (target.wikiSlug) {
+				// [[wiki/note]] or [[wiki/note#section]]
+				href = noteUrl(target.wikiSlug, target.noteSlug);
+				if (target.section) href += `#${target.section}`;
+			} else {
+				// [[note]] or [[note#section]] (bare slug, no current wiki)
+				href = target.noteSlug;
+				if (target.section) href += `#${target.section}`;
+			}
 
 			const token = state.push("html_inline", "", 0);
 			token.content = `<a href="${escapeHtml(href)}" class="wikilink">${escapeHtml(target.label)}</a>`;
diff --git a/tests/lib/markdown.test.ts b/tests/lib/markdown.test.ts
index 19e73d1..44507ed 100644
--- a/tests/lib/markdown.test.ts
+++ b/tests/lib/markdown.test.ts
@@ -79,6 +79,36 @@ describe("wikilinks", () => {
 		expect(html).toContain("Other Page");
 	});
 
+	test("renders same-wiki link with section anchor", () => {
+		const { html } = renderMarkdown("see [[my-page#introduction]]", WIKI);
+		expect(html).toContain('href="/wiki/test-wiki/my-page#introduction"');
+		expect(html).toContain(">my-page<");
+	});
+
+	test("renders cross-wiki link with section anchor", () => {
+		const { html } = renderMarkdown("see [[other-wiki/my-page#details]]", WIKI);
+		expect(html).toContain('href="/wiki/other-wiki/my-page#details"');
+		expect(html).toContain(">other-wiki/my-page<");
+	});
+
+	test("renders wiki home page link", () => {
+		const { html } = renderMarkdown("see [[other-wiki/]]", WIKI);
+		expect(html).toContain('href="/wiki/other-wiki"');
+		expect(html).toContain(">other-wiki<");
+	});
+
+	test("renders bare anchor on current page", () => {
+		const { html } = renderMarkdown("jump to [[#section]]", WIKI);
+		expect(html).toContain('href="#section"');
+		expect(html).toContain(">section<");
+	});
+
+	test("section links with custom labels", () => {
+		const { html } = renderMarkdown("[[my-page#intro|Introduction]]", WIKI);
+		expect(html).toContain('href="/wiki/test-wiki/my-page#intro"');
+		expect(html).toContain("Introduction");
+	});
+
 	test("handles multiple wikilinks in one line", () => {
 		const { html } = renderMarkdown("[[page-a]] and [[page-b]]", WIKI);
 		expect(html).toContain('href="/wiki/test-wiki/page-a"');
@@ -188,4 +218,36 @@ describe("extractWikilinks", () => {
 			{ noteSlug: "b", label: "b" },
 		]);
 	});
+
+	test("excludes anchor-only links from extracted targets", () => {
+		expect(extractWikilinks("see [[#section]]")).toEqual([]);
+	});
+
+	test("normalises wiki home links to home note slug", () => {
+		expect(extractWikilinks("see [[docs/]]")).toEqual([
+			{ wikiSlug: "docs", noteSlug: "home", label: "docs" },
+		]);
+	});
+
+	test("extracts links with section fragments", () => {
+		expect(extractWikilinks("see [[page#section]]", "test-wiki")).toEqual([
+			{
+				wikiSlug: "test-wiki",
+				noteSlug: "page",
+				label: "page",
+				section: "section",
+			},
+		]);
+	});
+
+	test("extracts cross-wiki links with section fragments", () => {
+		expect(extractWikilinks("see [[docs/page#intro]]")).toEqual([
+			{
+				wikiSlug: "docs",
+				noteSlug: "page",
+				label: "docs/page",
+				section: "intro",
+			},
+		]);
+	});
 });