diff --git a/src/__tests__/inline-action-guard.test.ts b/src/__tests__/inline-action-guard.test.ts
new file mode 100644
index 000000000..82b6fccba
--- /dev/null
+++ b/src/__tests__/inline-action-guard.test.ts
@@ -0,0 +1,121 @@
+/**
+ * A small text action inside a line of content goes through `InlineAction`
+ * (`src/components/ui/inline-action.tsx`).
+ *
+ * Thirty-odd hand-rolled copies of the same "underlined small text link"
+ * carried three different focus rings, none at all on half of them, and a
+ * 16 px touch target on a phone. The primitive owns the 44 px floor on a
+ * coarse pointer and the ring; this guard keeps a new copy from appearing
+ * beside it.
+ *
+ * Matched: a `<button>`, `<Link>` or `<a>` whose static `className` combines
+ * the inline-action signature — an underline (`underline` / `hover:underline`)
+ * with a small text size (`text-xs` / `text-sm`) and an action tone
+ * (`text-primary` / `text-muted-foreground`). A full-width row link or a
+ * framed button does not have that combination.
+ *
+ * Not matched (stated, not hidden): a class list assembled at runtime, and a
+ * copy without an underline. The guard catches the idiom, not every way to
+ * draw a small link.
+ */
+import { describe, expect, it } from "vitest";
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+
+import { walkSourceFiles } from "./helpers/source-files";
+
+const SRC = join(__dirname, "..");
+
+/**
+ * Sites that look like an inline action but are something else, each with
+ * the reason. Keyed by `path:tag`.
+ */
+const ALLOWED: Record<string, string> = {
+  // A full-width footer row of the glucose clinical panel: icon plus a
+  // wrapping sentence under a border, read as part of the card body.
+  "components/insights/glucose/glucose-clinical-panel.tsx:Link":
+    "full-width footer row, not an inline action",
+};
+
+const OPENER_RE = /<(button|Link|a)\b((?:[^>{]|\{[^}]*\})*?)>/g;
+const CLASS_RE = /className=(?:"([^"]*)"|\{cn\(\s*"([^"]*)")/;
+
+function isInlineActionShape(cls: string): boolean {
+  return (
+    /(?:^|\s)(?:hover:)?underline(?:\s|$)/.test(cls) &&
+    /(?:^|\s)text-(?:xs|sm)(?:\s|$)/.test(cls) &&
+    /(?:^|\s)text-(?:primary|muted-foreground)(?:\s|$)/.test(cls)
+  );
+}
+
+function findHandRolledInlineActions(
+  files: { path: string; source: string }[],
+): string[] {
+  const hits: string[] = [];
+  for (const { path, source } of files) {
+    for (const match of source.matchAll(OPENER_RE)) {
+      const cls = CLASS_RE.exec(match[2]);
+      if (!cls) continue;
+      if (!isInlineActionShape(cls[1] ?? cls[2] ?? "")) continue;
+      hits.push(`${path}:${match[1]}`);
+    }
+  }
+  return hits;
+}
+
+describe("small text actions go through InlineAction", () => {
+  const files = walkSourceFiles(SRC, { floor: 1200, extensions: [".tsx"] })
+    .filter(
+      (p) =>
+        (p.startsWith("components/") || p.startsWith("app/")) &&
+        !p.startsWith("components/ui/") &&
+        !p.includes("__tests__/"),
+    )
+    .map((path) => ({ path, source: readFileSync(join(SRC, path), "utf8") }));
+
+  it("walks the UI tree", () => {
+    expect(files.length).toBeGreaterThan(800);
+  });
+
+  it("has no hand-rolled copy outside the allowlist", () => {
+    const hits = findHandRolledInlineActions(files).filter(
+      (key) => !(key in ALLOWED),
+    );
+    expect(hits).toEqual([]);
+  });
+
+  it("keeps every allowlist entry live", () => {
+    const hits = new Set(findHandRolledInlineActions(files));
+    for (const key of Object.keys(ALLOWED)) {
+      expect(hits.has(key), key).toBe(true);
+    }
+  });
+
+  it("recognises the idiom it exists to refuse", () => {
+    const planted = [
+      {
+        path: "components/x.tsx",
+        source:
+          '<Link href="/a" className="text-primary text-xs underline-offset-2 hover:underline">Go</Link>',
+      },
+      {
+        path: "components/y.tsx",
+        source:
+          '<button type="button" onClick={() => go()} className="text-muted-foreground hover:text-foreground text-sm underline">Go</button>',
+      },
+      {
+        path: "components/z.tsx",
+        source: '<InlineAction tone="muted">Go</InlineAction>',
+      },
+    ];
+    expect(findHandRolledInlineActions(planted)).toEqual([
+      "components/x.tsx:Link",
+      "components/y.tsx:button",
+    ]);
+  });
+
+  it("is used where the copies were", () => {
+    const users = files.filter((f) => f.source.includes("<InlineAction"));
+    expect(users.length).toBeGreaterThanOrEqual(25);
+  });
+});
diff --git a/src/app/mood/page-client.tsx b/src/app/mood/page-client.tsx
index c2a24f008..a5cf60065 100644
--- a/src/app/mood/page-client.tsx
+++ b/src/app/mood/page-client.tsx
@@ -18,6 +18,7 @@ import { ArrowRight, Plus, Wrench } from "lucide-react";
 import { useRouter, useSearchParams } from "next/navigation";
 import { useEffect } from "react";
 import { useTranslations } from "@/lib/i18n/context";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export default function MoodPageClient() {
   const { user, isAuthenticated, isLoading } = useAuth();
@@ -197,14 +198,12 @@ export default function MoodPageClient() {
           here (module-gated — no nav change) rather than a merge: capture
           vs. screener stay two defensible surfaces, just cross-linked. */}
       {user?.modules?.mentalHealth === true ? (
-        <Link
-          href="/mental-wellbeing"
-          data-slot="mood-mental-wellbeing-link"
-          className="text-muted-foreground hover:text-foreground focus-visible:ring-ring/50 inline-flex items-center gap-1.5 text-sm underline-offset-4 transition-colors hover:underline focus-visible:ring-[3px] focus-visible:outline-none"
-        >
-          {t("mood.mentalWellbeingLink")}
-          <ArrowRight className="size-3.5" aria-hidden="true" />
-        </Link>
+        <InlineAction asChild tone="muted" size="sm" className="gap-1.5">
+          <Link href="/mental-wellbeing" data-slot="mood-mental-wellbeing-link">
+            {t("mood.mentalWellbeingLink")}
+            <ArrowRight className="size-3.5" aria-hidden="true" />
+          </Link>
+        </InlineAction>
       ) : null}
     </div>
   );
diff --git a/src/components/admin/central-codex-section.tsx b/src/components/admin/central-codex-section.tsx
index 7ae0ffb97..c9d9e1734 100644
--- a/src/components/admin/central-codex-section.tsx
+++ b/src/components/admin/central-codex-section.tsx
@@ -36,6 +36,7 @@ import {
   invalidateKeys,
   queryKeys,
 } from "@/lib/query-keys";
+import { InlineAction } from "@/components/ui/inline-action";
 
 interface CentralCodexStatus {
   status: string;
@@ -228,15 +229,15 @@ export function CentralCodexSection() {
                 {t("settings.ai.deviceCodeStep2")}
                 <div className="bg-card border-border mt-2 inline-flex items-center gap-2 rounded border px-3 py-2 font-mono text-lg tracking-widest">
                   {deviceCode.userCode}
-                  <button
-                    type="button"
+                  <InlineAction
+                    tone="muted"
+                    className="underline"
                     onClick={() =>
                       navigator.clipboard?.writeText(deviceCode.userCode)
                     }
-                    className="text-muted-foreground hover:text-foreground text-xs underline"
                   >
                     {t("settings.ai.deviceCodeCopy")}
-                  </button>
+                  </InlineAction>
                 </div>
               </li>
               <li>{t("settings.ai.deviceCodeStep3")}</li>
diff --git a/src/components/admin/module-availability-section.tsx b/src/components/admin/module-availability-section.tsx
index df5442811..f57122c64 100644
--- a/src/components/admin/module-availability-section.tsx
+++ b/src/components/admin/module-availability-section.tsx
@@ -23,6 +23,7 @@ import {
 import type { ModuleKey } from "@/lib/modules/registry";
 import { SettingsToggle } from "./_shared";
 import { apiGet, apiPatch } from "@/lib/api/api-fetch";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /**
  * v1.18.0 — operator-side panel for server-wide module availability, the
@@ -127,12 +128,11 @@ export function ModuleAvailabilitySection() {
                     onCheckedChange={() => {}}
                     disabled
                   />
-                  <Link
-                    href="/admin/coach"
-                    className="text-primary text-xs underline-offset-4 hover:underline"
-                  >
-                    {t("admin.section.coach.title")}
-                  </Link>
+                  <InlineAction asChild>
+                    <Link href="/admin/coach">
+                      {t("admin.section.coach.title")}
+                    </Link>
+                  </InlineAction>
                 </div>
               );
             }
diff --git a/src/components/admin/recent-audit-preview.tsx b/src/components/admin/recent-audit-preview.tsx
index cab8589b7..0fb5ac6e4 100644
--- a/src/components/admin/recent-audit-preview.tsx
+++ b/src/components/admin/recent-audit-preview.tsx
@@ -27,6 +27,7 @@ import { useTranslations } from "@/lib/i18n/context";
 import { queryKeys } from "@/lib/query-keys";
 import { type AdminAuditEntry, useAuthActionLabels } from "./_shared";
 import { apiGet } from "@/lib/api/api-fetch";
+import { InlineAction } from "@/components/ui/inline-action";
 
 const PREVIEW_LIMIT = 10;
 
@@ -61,13 +62,12 @@ export function RecentAuditPreview() {
         titleId="admin-overview-audit-heading"
         title={t("admin.overview.auditTitle")}
         status={
-          <Link
-            href="/admin/login-overview"
-            className="text-primary inline-flex items-center gap-1 text-sm underline-offset-2 hover:underline"
-          >
-            {t("admin.overview.auditViewAll")}
-            <ArrowRight className="h-3.5 w-3.5" aria-hidden="true" />
-          </Link>
+          <InlineAction asChild size="sm">
+            <Link href="/admin/login-overview">
+              {t("admin.overview.auditViewAll")}
+              <ArrowRight className="size-3.5" aria-hidden="true" />
+            </Link>
+          </InlineAction>
         }
       />
 
diff --git a/src/components/dashboard/key-backup-banner.tsx b/src/components/dashboard/key-backup-banner.tsx
index f2e73b5cc..8b8901b2b 100644
--- a/src/components/dashboard/key-backup-banner.tsx
+++ b/src/components/dashboard/key-backup-banner.tsx
@@ -11,6 +11,7 @@ import Link from "next/link";
 import { KeyRound } from "lucide-react";
 import { useTranslations } from "@/lib/i18n/context";
 import { useKeyBackupStatus } from "@/components/admin/use-key-backup-status";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export function KeyBackupBanner({ isAdmin }: { isAdmin: boolean }) {
   const { t } = useTranslations();
@@ -29,12 +30,11 @@ export function KeyBackupBanner({ isAdmin }: { isAdmin: boolean }) {
         </p>
         <p className="text-sm">{t("dashboard.keyBackupBanner.body")}</p>
       </div>
-      <Link
-        href="/admin/encryption"
-        className="text-primary inline-flex min-h-11 items-center text-sm font-medium underline-offset-4 hover:underline"
-      >
-        {t("dashboard.keyBackupBanner.action")}
-      </Link>
+      <InlineAction asChild size="sm" className="min-h-11 font-medium">
+        <Link href="/admin/encryption">
+          {t("dashboard.keyBackupBanner.action")}
+        </Link>
+      </InlineAction>
     </div>
   );
 }
diff --git a/src/components/documents/sources/document-source-picker.tsx b/src/components/documents/sources/document-source-picker.tsx
index ba50192d0..236c430e9 100644
--- a/src/components/documents/sources/document-source-picker.tsx
+++ b/src/components/documents/sources/document-source-picker.tsx
@@ -83,6 +83,7 @@ import {
 } from "./source-errors";
 import { SegmentedChoice } from "./segmented-choice";
 import { systemName } from "./use-document-sources";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export interface DocumentPickerLink {
   kind: DocumentPickerLinkKind;
@@ -485,19 +486,19 @@ export function DocumentSourcePicker({
           </div>
         </div>
         {hasFilters ? (
-          <button
-            type="button"
+          <InlineAction
+            tone="muted"
             onClick={() => {
               startOver();
               setTag("");
               setFrom("");
               setTo("");
             }}
-            className="text-muted-foreground hover:text-foreground focus-visible:ring-ring/50 inline-flex min-h-8 items-center gap-1 rounded-sm text-xs underline-offset-2 hover:underline focus-visible:ring-[3px] focus-visible:outline-none"
+            className="min-h-8"
           >
             <X className="size-3.5" aria-hidden />
             {t("documents.sourcePicker.clearFilters")}
-          </button>
+          </InlineAction>
         ) : null}
 
         {finished ? (
diff --git a/src/components/insights/coach-panel/chat-bubble.tsx b/src/components/insights/coach-panel/chat-bubble.tsx
index 0c0cec5b3..81c6345a3 100644
--- a/src/components/insights/coach-panel/chat-bubble.tsx
+++ b/src/components/insights/coach-panel/chat-bubble.tsx
@@ -39,6 +39,7 @@ import type {
   CoachProvenanceMetric,
 } from "@/lib/ai/coach/types";
 import { translateOrNull } from "@/lib/i18n/translate-code";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /**
  * Per-message bubble renderer for the Coach thread, split out of
@@ -775,13 +776,11 @@ function ChatBubbleImpl({
             setup instead of inviting an endless retry. */}
         {(errorCode === "coach.provider.none" ||
           errorCode === "ai.provider.none") && (
-          <Link
-            href="/settings/ai"
-            data-slot="coach-no-provider-cta"
-            className="text-primary text-xs font-medium underline-offset-4 hover:underline"
-          >
-            {t("insights.coach.errorNoProviderAction")}
-          </Link>
+          <InlineAction asChild className="font-medium">
+            <Link href="/settings/ai" data-slot="coach-no-provider-cta">
+              {t("insights.coach.errorNoProviderAction")}
+            </Link>
+          </InlineAction>
         )}
         {/* v1.18.1 — one-tap cadence-suggestion action
             card. Live from the streaming hook, or restored from the
diff --git a/src/components/insights/health-score-card.tsx b/src/components/insights/health-score-card.tsx
index ffd2f3c5b..eaf1715bf 100644
--- a/src/components/insights/health-score-card.tsx
+++ b/src/components/insights/health-score-card.tsx
@@ -41,6 +41,7 @@ import type {
 import { useDateFormatPreference, useTranslations } from "@/lib/i18n/context";
 import { SCORE_PILLAR_LABEL_KEYS } from "@/lib/score-config/labels";
 import { cn } from "@/lib/utils";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /**
  * The Health Score panel: the hero band's right-hand column.
@@ -441,14 +442,15 @@ export function HealthScoreCard({
             </span>
           ) : null}
           {/* v1.42 — the way to the score's course over time. */}
-          <Link
-            href="/insights/health-score"
-            data-slot="health-score-history-link"
-            className="text-foreground/80 hover:text-foreground focus-visible:ring-ring/50 -my-3 inline-flex items-center gap-1 rounded-md py-3 text-xs underline-offset-2 hover:underline focus-visible:ring-2 focus-visible:outline-none"
-          >
-            <History className="size-3.5" aria-hidden="true" />
-            {t("insights.healthScore.historyLink")}
-          </Link>
+          <InlineAction asChild tone="foreground">
+            <Link
+              href="/insights/health-score"
+              data-slot="health-score-history-link"
+            >
+              <History className="size-3.5" aria-hidden="true" />
+              {t("insights.healthScore.historyLink")}
+            </Link>
+          </InlineAction>
         </div>
       </div>
 
diff --git a/src/components/insights/medication-efficacy-summary.tsx b/src/components/insights/medication-efficacy-summary.tsx
index a68d5ae54..5be57af72 100644
--- a/src/components/insights/medication-efficacy-summary.tsx
+++ b/src/components/insights/medication-efficacy-summary.tsx
@@ -24,6 +24,7 @@ import type {
   MedicationEfficacyDTO,
   EfficacyTargetView,
 } from "@/lib/medications/efficacy/build-efficacy";
+import { InlineAction } from "@/components/ui/inline-action";
 
 function primaryWithDelta(
   dto: MedicationEfficacyDTO,
@@ -108,13 +109,14 @@ export function MedicationEfficacySummary({
                       </span>
                     </p>
                   </div>
-                  <Link
-                    href={`/medications/${med.id}?tab=wirkung`}
-                    className="text-primary focus-visible:ring-ring shrink-0 rounded-sm text-xs underline-offset-2 hover:underline focus-visible:ring-2 focus-visible:outline-none"
-                    data-slot="insights-medication-efficacy-link"
-                  >
-                    {t("medications.efficacy.insights.link")}
-                  </Link>
+                  <InlineAction asChild className="shrink-0">
+                    <Link
+                      href={`/medications/${med.id}?tab=wirkung`}
+                      data-slot="insights-medication-efficacy-link"
+                    >
+                      {t("medications.efficacy.insights.link")}
+                    </Link>
+                  </InlineAction>
                 </li>
               );
             })}
diff --git a/src/components/insights/metric-target-summary.tsx b/src/components/insights/metric-target-summary.tsx
index 0e7d85126..bc2b2f748 100644
--- a/src/components/insights/metric-target-summary.tsx
+++ b/src/components/insights/metric-target-summary.tsx
@@ -18,6 +18,7 @@ import { useTargetAdjust } from "@/lib/insights/target-adjust-context";
 import { getTargetSourceLink } from "@/lib/targets/source-link";
 import { apiGet } from "@/lib/api/api-fetch";
 import { resolveGlucoseUnit, type GlucoseUnit } from "@/lib/glucose";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /**
  * v1.8.0 → v1.8.5 — surface the per-metric target reference panel on each
@@ -416,19 +417,16 @@ function TargetReferencePanel({
           panel registers itself as that gear's edit target above. */}
         <div className="flex flex-wrap items-center gap-x-4 gap-y-1.5 pt-0.5">
           {sourceLink ? (
-            <a
-              href={sourceLink}
-              target="_blank"
-              rel="noopener noreferrer"
-              className="text-muted-foreground hover:text-foreground inline-flex items-center gap-1 text-xs"
-            >
-              <span>
-                {t("targets.sourceLabel", {
-                  source: sourceName(target.source, t),
-                })}
-              </span>
-              <ExternalLink className="size-3" aria-hidden="true" />
-            </a>
+            <InlineAction asChild tone="muted">
+              <a href={sourceLink} target="_blank" rel="noopener noreferrer">
+                <span>
+                  {t("targets.sourceLabel", {
+                    source: sourceName(target.source, t),
+                  })}
+                </span>
+                <ExternalLink className="size-3" aria-hidden="true" />
+              </a>
+            </InlineAction>
           ) : (
             <span className="text-muted-foreground text-xs">
               {t("targets.sourceLabel", {
diff --git a/src/components/insights/sleep/chronotype-card.tsx b/src/components/insights/sleep/chronotype-card.tsx
index 14c0e66be..3220acd6c 100644
--- a/src/components/insights/sleep/chronotype-card.tsx
+++ b/src/components/insights/sleep/chronotype-card.tsx
@@ -8,6 +8,7 @@ import { Card, CardContent, CardHeader } from "@/components/ui/card";
 import { LearningGate } from "@/components/ui/learning-gate";
 import { TileHeader } from "@/components/insights/tile-header";
 import type { ChronotypeDto } from "./use-sleep-rhythm";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /** Minutes-of-day → "HH:MM" wall-clock label (24 h, zero-padded). */
 function clockLabel(minutesOfDay: number): string {
@@ -90,12 +91,12 @@ export function ChronotypeCard({ chronotype }: { chronotype: ChronotypeDto }) {
           )}
         </div>
 
-        <button
-          type="button"
+        <InlineAction
+          tone="muted"
+          className="font-medium"
           onClick={() => setShowAdvanced((v) => !v)}
           aria-expanded={showAdvanced}
           aria-controls="chronotype-advanced"
-          className="text-muted-foreground hover:text-foreground flex items-center gap-1 text-xs font-medium transition-colors"
         >
           {showAdvanced ? (
             <ChevronUp className="h-3.5 w-3.5" />
@@ -103,7 +104,7 @@ export function ChronotypeCard({ chronotype }: { chronotype: ChronotypeDto }) {
             <ChevronDown className="h-3.5 w-3.5" />
           )}
           {t("insights.sleep.chronotype.advancedToggle")}
-        </button>
+        </InlineAction>
 
         {showAdvanced && (
           <div id="chronotype-advanced" className="space-y-2 border-t pt-3">
diff --git a/src/components/insights/trends-row.tsx b/src/components/insights/trends-row.tsx
index b62e8e06b..eda495290 100644
--- a/src/components/insights/trends-row.tsx
+++ b/src/components/insights/trends-row.tsx
@@ -23,6 +23,7 @@ import {
   type TrendAnnotationStatus,
 } from "./trend-annotation";
 import { useUnitDisplay } from "@/hooks/use-unit-display";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /**
  * Trends row — a small chart per metric above a one-sentence
@@ -339,15 +340,20 @@ export function TrendsRow({
                   is used but was unreachable from Insights. The link sits below
                   the caption so the chart keeps its own interactions. */}
               {config.detailHref ? (
-                <Link
-                  href={config.detailHref}
-                  data-slot="trends-row-detail-link"
-                  data-metric={config.metric}
-                  className="text-muted-foreground hover:text-foreground mt-auto inline-flex items-center gap-1 self-start text-xs font-medium transition-colors"
+                <InlineAction
+                  asChild
+                  tone="muted"
+                  className="mt-auto self-start font-medium"
                 >
-                  {t("insights.trendsRow.viewDetail", { metric: title })}
-                  <ArrowRight className="h-3.5 w-3.5" aria-hidden="true" />
-                </Link>
+                  <Link
+                    href={config.detailHref}
+                    data-slot="trends-row-detail-link"
+                    data-metric={config.metric}
+                  >
+                    {t("insights.trendsRow.viewDetail", { metric: title })}
+                    <ArrowRight className="h-3.5 w-3.5" aria-hidden="true" />
+                  </Link>
+                </InlineAction>
               ) : null}
             </div>
           );
diff --git a/src/components/insights/workout-detail/stats.tsx b/src/components/insights/workout-detail/stats.tsx
index 36002d3bd..4aa93b56c 100644
--- a/src/components/insights/workout-detail/stats.tsx
+++ b/src/components/insights/workout-detail/stats.tsx
@@ -28,6 +28,7 @@ import {
   formatPace,
   formatDurationMinutes,
 } from "./format";
+import { InlineAction } from "@/components/ui/inline-action";
 
 interface StatTileProps {
   icon: ReactNode;
@@ -199,14 +200,15 @@ export function WorkoutDetailStats({ workout }: WorkoutDetailStatsProps) {
               <span className="min-w-0 flex-1" />
             )}
             {workout.previousWorkoutId ? (
-              <Link
-                href={`/insights/workouts/${workout.previousWorkoutId}`}
-                data-slot="workout-detail-previous-link"
-                className="text-muted-foreground hover:text-foreground focus-visible:ring-ring/50 inline-flex shrink-0 items-center gap-1.5 text-xs underline-offset-4 transition-colors hover:underline focus-visible:ring-[3px] focus-visible:outline-none"
-              >
-                {t("insights.workouts.detail.previousSessionLink")}
-                <ArrowRight className="size-3.5" aria-hidden="true" />
-              </Link>
+              <InlineAction asChild tone="muted" className="shrink-0 gap-1.5">
+                <Link
+                  href={`/insights/workouts/${workout.previousWorkoutId}`}
+                  data-slot="workout-detail-previous-link"
+                >
+                  {t("insights.workouts.detail.previousSessionLink")}
+                  <ArrowRight className="size-3.5" aria-hidden="true" />
+                </Link>
+              </InlineAction>
             ) : null}
           </div>
         ) : null}
diff --git a/src/components/links/entity-link-picker.tsx b/src/components/links/entity-link-picker.tsx
index 3c532b649..b49bc93bf 100644
--- a/src/components/links/entity-link-picker.tsx
+++ b/src/components/links/entity-link-picker.tsx
@@ -54,6 +54,7 @@ import { useTranslations } from "@/lib/i18n/context";
 import { cn } from "@/lib/utils";
 
 import { formatPeriod, type PeriodQuery } from "./period-query";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export interface EntityLinkOption {
   id: string;
@@ -546,16 +547,15 @@ export function EntityLinkPicker({
                         >
                           {group.label}
                         </span>
-                        <button
-                          type="button"
+                        <InlineAction
+                          tone="muted"
                           data-slot={`${slot}-group-select`}
                           onClick={() =>
                             change(toggleAll(selected, groupIds), group.options)
                           }
-                          className="text-muted-foreground hover:text-foreground text-xs underline-offset-2 hover:underline"
                         >
                           {t("links.picker.selectAll")}
-                        </button>
+                        </InlineAction>
                       </div>
                     ) : null}
                     <ul className="space-y-1">
diff --git a/src/components/medications/card-parts/medication-compliance-bars.tsx b/src/components/medications/card-parts/medication-compliance-bars.tsx
index 2f70c9964..99bd9fe02 100644
--- a/src/components/medications/card-parts/medication-compliance-bars.tsx
+++ b/src/components/medications/card-parts/medication-compliance-bars.tsx
@@ -3,6 +3,7 @@ import { Flame, RotateCw } from "lucide-react";
 import { ComplianceInfoTip } from "@/components/medications/card-parts/compliance-info-tip";
 import { Progress } from "@/components/ui/progress";
 import { useTranslations, useFormatters } from "@/lib/i18n/context";
+import { InlineAction } from "@/components/ui/inline-action";
 
 interface MedicationComplianceBarsProps {
   rate7: number;
@@ -286,14 +287,10 @@ export function MedicationComplianceError({
       </div>
       <div className="space-y-1.5">
         <div className="flex h-5 items-center">
-          <button
-            type="button"
-            onClick={onRetry}
-            className="text-muted-foreground hover:text-foreground flex items-center gap-1 text-xs underline-offset-2 hover:underline"
-          >
-            <RotateCw className="h-3 w-3" aria-hidden="true" />
+          <InlineAction tone="muted" onClick={onRetry}>
+            <RotateCw className="size-3" aria-hidden="true" />
             {t("common.retry")}
-          </button>
+          </InlineAction>
         </div>
         <div className="bg-muted/40 h-2 rounded" />
       </div>
diff --git a/src/components/medications/detail/medication-detail-tabs.tsx b/src/components/medications/detail/medication-detail-tabs.tsx
index bb34d5411..2f0128495 100644
--- a/src/components/medications/detail/medication-detail-tabs.tsx
+++ b/src/components/medications/detail/medication-detail-tabs.tsx
@@ -104,6 +104,7 @@ import { AutoMarkTakenBody } from "@/components/medications/sections/auto-mark-t
 import { IntakeTrackingBody } from "@/components/medications/sections/intake-tracking-section";
 import { MedicationRelatedSection } from "@/components/medications/detail/medication-related-section";
 import type { RelatedLink } from "@/lib/links/related";
+import { InlineAction } from "@/components/ui/inline-action";
 
 // v1.15.20 — Recharts stays out of the detail page's initial bundle:
 // both chart bodies load through `next/dynamic` (client-only) with the
@@ -1097,14 +1098,13 @@ function StatusRow({
         <p className="text-muted-foreground text-xs font-medium">{label}</p>
         <p className="text-foreground text-sm">{value}</p>
       </div>
-      <button
-        type="button"
+      <InlineAction
         onClick={onJump}
-        className="text-primary focus-visible:ring-ring shrink-0 rounded-sm text-xs underline-offset-2 hover:underline focus-visible:ring-2 focus-visible:outline-none"
+        className="shrink-0"
         data-slot={`${dataSlot}-jump`}
       >
         {jumpLabel}
-      </button>
+      </InlineAction>
     </li>
   );
 }
diff --git a/src/components/medications/sections/inventory-section.tsx b/src/components/medications/sections/inventory-section.tsx
index 7af96d638..1bab5744a 100644
--- a/src/components/medications/sections/inventory-section.tsx
+++ b/src/components/medications/sections/inventory-section.tsx
@@ -79,6 +79,7 @@ import {
   type InventoryItem,
   type InventoryState,
 } from "./inventory-shared";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export { AddInventoryDialog, AdjustInventoryDialog } from "./inventory-dialogs";
 export { invalidateSupplyQueries } from "./inventory-shared";
@@ -314,17 +315,18 @@ export function InventorySection({
             of what was shared" panel. */}
         {!inSharedRecord && (
           <div className="py-2">
-            <Link
-              href="/settings/notifications#low-stock"
-              className="text-muted-foreground hover:text-foreground text-xs underline-offset-2 hover:underline"
-              data-slot="inventory-low-stock-link"
-            >
-              {lowStockDays !== null
-                ? t("medications.detail.bestand.lowStockLinkOn", {
-                    days: lowStockDays,
-                  })
-                : t("medications.detail.bestand.lowStockLinkOff")}
-            </Link>
+            <InlineAction asChild tone="muted">
+              <Link
+                href="/settings/notifications#low-stock"
+                data-slot="inventory-low-stock-link"
+              >
+                {lowStockDays !== null
+                  ? t("medications.detail.bestand.lowStockLinkOn", {
+                      days: lowStockDays,
+                    })
+                  : t("medications.detail.bestand.lowStockLinkOff")}
+              </Link>
+            </InlineAction>
           </div>
         )}
       </SettingsGroup>
diff --git a/src/components/mood/mood-context-fields.tsx b/src/components/mood/mood-context-fields.tsx
index 533e04384..35f587b64 100644
--- a/src/components/mood/mood-context-fields.tsx
+++ b/src/components/mood/mood-context-fields.tsx
@@ -55,6 +55,7 @@ import {
   contextValueLabelKey,
 } from "@/lib/mood/context-vocabulary";
 import type { LinkedDayContext, LinkedFigure } from "@/lib/mood/linked-context";
+import { InlineAction } from "@/components/ui/inline-action";
 
 const CONTEXT_NOTE_MAX_LENGTH = 500;
 
@@ -683,16 +684,17 @@ export function MoodLinkedDaySection({
               <Activity className="mr-1 inline h-3 w-3" aria-hidden="true" />
               {bodyLine}
             </span>
-            <a
-              href={
-                linked.body.available && linked.body.episodeId
-                  ? `/illness/${linked.body.episodeId}`
-                  : "/illness"
-              }
-              className="text-primary text-xs underline underline-offset-2"
-            >
-              {t("mood.dayContext.openIllness")}
-            </a>
+            <InlineAction asChild className="underline">
+              <a
+                href={
+                  linked.body.available && linked.body.episodeId
+                    ? `/illness/${linked.body.episodeId}`
+                    : "/illness"
+                }
+              >
+                {t("mood.dayContext.openIllness")}
+              </a>
+            </InlineAction>
           </div>
         ) : null}
       </div>
diff --git a/src/components/mood/mood-list.tsx b/src/components/mood/mood-list.tsx
index 5e46b84c4..f5fc5a9a0 100644
--- a/src/components/mood/mood-list.tsx
+++ b/src/components/mood/mood-list.tsx
@@ -118,6 +118,7 @@ import {
   droppedAnyLinkKeys,
   type DroppedLinkKeysWire,
 } from "@/lib/mood/dropped-link-keys";
+import { InlineAction } from "@/components/ui/inline-action";
 
 // Re-export the score map under the legacy local name to keep the
 // rest of this file unchanged. v1.4.27 B6 / BL-P6-11 — the single
@@ -1361,16 +1362,15 @@ function MoodNoteText({
         {note}
       </p>
       {(expanded || clamped) && (
-        <button
-          type="button"
+        <InlineAction
+          className="font-medium"
           onClick={onToggle}
           aria-expanded={expanded}
           aria-controls={noteId}
           data-testid="mood-note-toggle"
-          className="text-primary cursor-pointer text-xs font-medium"
         >
           {expanded ? t("mood.noteCollapse") : t("mood.noteExpand")}
-        </button>
+        </InlineAction>
       )}
     </div>
   );
diff --git a/src/components/onboarding/done-screen.tsx b/src/components/onboarding/done-screen.tsx
index ece0c72b8..39a6d2f80 100644
--- a/src/components/onboarding/done-screen.tsx
+++ b/src/components/onboarding/done-screen.tsx
@@ -32,6 +32,7 @@ import { useTranslations } from "@/lib/i18n/context";
 import { markChecklistExpanded } from "@/lib/onboarding/checklist-storage";
 import type { OnboardingStateDto } from "@/lib/onboarding/needs";
 import { accountLabel } from "@/lib/sharing/account-access-view";
+import { InlineAction } from "@/components/ui/inline-action";
 
 interface AiProviderStatus {
   /** Origin of the provider that would serve this user, if any. */
@@ -376,12 +377,9 @@ export function DoneScreen({ state }: { state: OnboardingStateDto }) {
 
           <MedicalDisclaimer variant="dataPosture" />
 
-          <Link
-            href="/settings/ai"
-            className="text-primary text-sm font-medium underline underline-offset-4"
-          >
-            {t("onboarding.ai.setupCta")}
-          </Link>
+          <InlineAction asChild size="sm" className="font-medium underline">
+            <Link href="/settings/ai">{t("onboarding.ai.setupCta")}</Link>
+          </InlineAction>
         </section>
       ) : null}
 
@@ -459,20 +457,28 @@ export function DoneScreen({ state }: { state: OnboardingStateDto }) {
           new account one honest pointer to Settings → Modules before they
           leave the wizard. */}
       <div className="flex flex-wrap items-center justify-center gap-x-4 gap-y-1.5">
-        <Link
-          href="/settings/export"
-          className="text-muted-foreground hover:text-foreground inline-flex items-center gap-1.5 text-sm underline underline-offset-4"
+        <InlineAction
+          asChild
+          tone="muted"
+          size="sm"
+          className="gap-1.5 underline"
         >
-          <FileUp className="size-3.5" />
-          {t("onboarding.done.importCta")}
-        </Link>
-        <Link
-          href="/settings/modules"
-          className="text-muted-foreground hover:text-foreground inline-flex items-center gap-1.5 text-sm underline underline-offset-4"
+          <Link href="/settings/export">
+            <FileUp className="size-3.5" />
+            {t("onboarding.done.importCta")}
+          </Link>
+        </InlineAction>
+        <InlineAction
+          asChild
+          tone="muted"
+          size="sm"
+          className="gap-1.5 underline"
         >
-          <Settings2 className="size-3.5" />
-          {t("onboarding.done.modulesCta")}
-        </Link>
+          <Link href="/settings/modules">
+            <Settings2 className="size-3.5" />
+            {t("onboarding.done.modulesCta")}
+          </Link>
+        </InlineAction>
       </div>
     </section>
   );
diff --git a/src/components/settings/access/handover-decision.tsx b/src/components/settings/access/handover-decision.tsx
index 0dc356357..a3f619edb 100644
--- a/src/components/settings/access/handover-decision.tsx
+++ b/src/components/settings/access/handover-decision.tsx
@@ -22,6 +22,7 @@ import {
   useHandoverDecision,
   type HandoverDecisionState,
 } from "@/lib/queries/use-handover-decision";
+import { InlineAction } from "@/components/ui/inline-action";
 
 type PendingDecision = NonNullable<HandoverDecisionState["pending"]>;
 
@@ -191,13 +192,14 @@ export function HandoverNotificationHint() {
         <p className="text-sm">
           {t("recordSharing.handoverDecision.notificationsBody")}
         </p>
-        <Link
-          href="/settings/notifications"
-          className="text-primary text-sm underline"
-          data-slot="handover-notification-link"
-        >
-          {t("recordSharing.handoverDecision.notificationsAction")}
-        </Link>
+        <InlineAction asChild size="sm" className="underline">
+          <Link
+            href="/settings/notifications"
+            data-slot="handover-notification-link"
+          >
+            {t("recordSharing.handoverDecision.notificationsAction")}
+          </Link>
+        </InlineAction>
       </div>
     </div>
   );
diff --git a/src/components/settings/ai/codex-provider-form.tsx b/src/components/settings/ai/codex-provider-form.tsx
index eaf4098d2..78bfce68f 100644
--- a/src/components/settings/ai/codex-provider-form.tsx
+++ b/src/components/settings/ai/codex-provider-form.tsx
@@ -18,6 +18,7 @@ import { useTranslations } from "@/lib/i18n/context";
 import { aiInputDependentKeys, invalidateKeys } from "@/lib/query-keys";
 
 import type { InsightsSettings } from "./shared";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export function CodexProviderForm({
   settings,
@@ -241,15 +242,15 @@ export function CodexProviderForm({
               {t("settings.ai.deviceCodeStep2")}
               <div className="bg-card border-border mt-2 inline-flex items-center gap-2 rounded border px-3 py-2 font-mono text-lg tracking-widest">
                 {deviceCode.userCode}
-                <button
-                  type="button"
+                <InlineAction
                   onClick={() =>
                     navigator.clipboard?.writeText(deviceCode.userCode)
                   }
-                  className="text-muted-foreground hover:text-foreground text-xs underline"
+                  tone="muted"
+                  className="underline"
                 >
                   {t("settings.ai.deviceCodeCopy")}
-                </button>
+                </InlineAction>
               </div>
             </li>
             <li>{t("settings.ai.deviceCodeStep3")}</li>
diff --git a/src/components/settings/ai/openai-provider-form.tsx b/src/components/settings/ai/openai-provider-form.tsx
index b598f9514..1d0f077e0 100644
--- a/src/components/settings/ai/openai-provider-form.tsx
+++ b/src/components/settings/ai/openai-provider-form.tsx
@@ -27,6 +27,7 @@ import {
   uiToLegacyProviderEnum,
   type UserAIProvider,
 } from "./shared";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export function OpenAIProviderForm({
   userProvider,
@@ -172,15 +173,15 @@ export function OpenAIProviderForm({
       )}
 
       <div>
-        <button
-          type="button"
+        <InlineAction
+          tone="muted"
+          className="underline"
           onClick={() => setShowAdvanced((v) => !v)}
-          className="text-muted-foreground hover:text-foreground text-xs underline"
         >
           {showAdvanced
             ? t("settings.ai.openai.hideAdvanced")
             : t("settings.ai.openai.showAdvanced")}
-        </button>
+        </InlineAction>
         {showAdvanced && (
           <div className="mt-2 space-y-1">
             <Label htmlFor="ai-openai-base-url">
diff --git a/src/components/settings/integrations/oauth-integration-card.tsx b/src/components/settings/integrations/oauth-integration-card.tsx
index d8909b2d1..9af68d69e 100644
--- a/src/components/settings/integrations/oauth-integration-card.tsx
+++ b/src/components/settings/integrations/oauth-integration-card.tsx
@@ -65,6 +65,7 @@ import {
   type IntegrationDocsProvider,
 } from "./setup-guide-link";
 import { failureStreakFor, type IntegrationStatusViewModel } from "./shared";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export type OAuthIntegrationKey =
   | "withings"
@@ -489,16 +490,17 @@ export function OAuthIntegrationCardView({
         details || planLimited || viewModel?.metricFreshness?.length ? (
           <>
             {planLimited ? (
-              <a
-                href={WITHINGS_API_PLANS_URL}
-                target="_blank"
-                rel="noopener noreferrer"
-                data-testid="withings-plan-link"
-                className="text-primary inline-flex min-h-11 items-center gap-1 text-sm underline-offset-2 hover:underline sm:min-h-0"
-              >
-                {t("settings.integrations.withings.plan.link")}
-                <ExternalLink className="size-3" aria-hidden="true" />
-              </a>
+              <InlineAction asChild size="sm">
+                <a
+                  href={WITHINGS_API_PLANS_URL}
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  data-testid="withings-plan-link"
+                >
+                  {t("settings.integrations.withings.plan.link")}
+                  <ExternalLink className="size-3" aria-hidden="true" />
+                </a>
+              </InlineAction>
             ) : null}
             {details}
             <MetricFreshnessList entries={viewModel?.metricFreshness} />
diff --git a/src/components/settings/low-stock-card.tsx b/src/components/settings/low-stock-card.tsx
index 389c2f221..caa967fb7 100644
--- a/src/components/settings/low-stock-card.tsx
+++ b/src/components/settings/low-stock-card.tsx
@@ -13,6 +13,7 @@ import { useTranslations } from "@/lib/i18n/context";
 import { queryKeys } from "@/lib/query-keys";
 import { apiFetchRaw, apiGet } from "@/lib/api/api-fetch";
 import { readUpdatedAtToken, withBaseToken } from "@/lib/api/optimistic-token";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /**
  * v1.16.11 — medication low-stock alert threshold (Settings →
@@ -320,13 +321,11 @@ export function LowStockCard({
       {/* v1.16.11 — back-link to the medications list, the surface the
           alert is about (the supply tab links here the same way). */}
       <p>
-        <Link
-          href="/medications"
-          className="text-muted-foreground hover:text-foreground text-xs underline-offset-2 hover:underline"
-          data-slot="low-stock-medications-link"
-        >
-          {t("notifications.lowStock.medicationsLink")}
-        </Link>
+        <InlineAction asChild tone="muted">
+          <Link href="/medications" data-slot="low-stock-medications-link">
+            {t("notifications.lowStock.medicationsLink")}
+          </Link>
+        </InlineAction>
       </p>
     </SettingsCard>
   );
diff --git a/src/components/settings/module-toggle-row.tsx b/src/components/settings/module-toggle-row.tsx
index 557fa074b..6fc032a41 100644
--- a/src/components/settings/module-toggle-row.tsx
+++ b/src/components/settings/module-toggle-row.tsx
@@ -36,6 +36,7 @@ import type { LucideIcon } from "lucide-react";
 
 import { Label } from "@/components/ui/label";
 import { Switch } from "@/components/ui/switch";
+import { InlineAction } from "@/components/ui/inline-action";
 
 export interface ModuleToggleRowProps {
   /** Stable key — used for the input id + the test query handle. */
@@ -112,13 +113,12 @@ export function ModuleToggleRow({
             <p className="text-muted-foreground text-xs">{disabledReason}</p>
           ) : null}
           {manageLink ? (
-            <Link
-              href={manageLink.href}
-              className="text-muted-foreground hover:text-foreground inline-flex items-center gap-1 text-xs underline-offset-2 hover:underline"
-            >
-              {manageLink.label}
-              <ChevronRight className="h-3.5 w-3.5" aria-hidden="true" />
-            </Link>
+            <InlineAction asChild tone="muted">
+              <Link href={manageLink.href}>
+                {manageLink.label}
+                <ChevronRight className="size-3.5" aria-hidden="true" />
+              </Link>
+            </InlineAction>
           ) : null}
         </div>
       </div>
diff --git a/src/components/settings/report-selection/selection-panel.tsx b/src/components/settings/report-selection/selection-panel.tsx
index 158d45cdf..7cebc2ebd 100644
--- a/src/components/settings/report-selection/selection-panel.tsx
+++ b/src/components/settings/report-selection/selection-panel.tsx
@@ -74,6 +74,7 @@ import {
   shiftDateKey,
   validTimezoneOr,
 } from "@/lib/tz/format";
+import { InlineAction } from "@/components/ui/inline-action";
 
 type ExportFormat = "pdf" | "fhir" | "package";
 
@@ -310,13 +311,12 @@ export function HealthRecordExportPanel() {
             {/* Entry point into the document vault for the report period
                 (navigation only). Only rendered when the module is enabled. */}
             {user?.modules?.inboundDocuments ? (
-              <Link
-                href={`/documents?year=${new Date().getFullYear()}`}
-                className="text-muted-foreground hover:text-foreground focus-visible:ring-ring/50 inline-flex items-center gap-1.5 rounded-md text-xs transition-colors focus-visible:ring-[3px] focus-visible:outline-none"
-              >
-                <FolderOpen className="size-3.5" aria-hidden />
-                {t("settings.healthRecord.documentsLink")}
-              </Link>
+              <InlineAction asChild tone="muted" className="gap-1.5">
+                <Link href={`/documents?year=${new Date().getFullYear()}`}>
+                  <FolderOpen className="size-3.5" aria-hidden />
+                  {t("settings.healthRecord.documentsLink")}
+                </Link>
+              </InlineAction>
             ) : null}
           </div>
         </div>
diff --git a/src/components/settings/security-section/totp-card.tsx b/src/components/settings/security-section/totp-card.tsx
index 0c3b85f6a..17e62753f 100644
--- a/src/components/settings/security-section/totp-card.tsx
+++ b/src/components/settings/security-section/totp-card.tsx
@@ -46,6 +46,7 @@ import {
   type ExistingFactorProof,
   type ReauthMethod,
 } from "./existing-factor-reauth-dialog";
+import { InlineAction } from "@/components/ui/inline-action";
 
 interface SetupData {
   otpauthUri: string;
@@ -430,13 +431,9 @@ export function TotpCard({
                   {t("settings.security.totp.verify")}
                 </Button>
               </div>
-              <button
-                type="button"
-                onClick={resetWizard}
-                className="text-muted-foreground hover:text-foreground text-xs"
-              >
+              <InlineAction tone="muted" onClick={resetWizard}>
                 {t("common.cancel")}
-              </button>
+              </InlineAction>
             </form>
           </div>
         )}
@@ -564,9 +561,8 @@ export function TotpCard({
                       }
                       className="font-mono"
                     />
-                    <button
-                      type="button"
-                      className="text-muted-foreground hover:text-foreground text-xs"
+                    <InlineAction
+                      tone="muted"
                       onClick={() =>
                         setDisableMethod((m) =>
                           m === "totp" ? "recovery" : "totp",
@@ -576,7 +572,7 @@ export function TotpCard({
                       {disableMethod === "totp"
                         ? t("settings.security.useRecoveryCode")
                         : t("settings.security.useAuthenticator")}
-                    </button>
+                    </InlineAction>
                   </div>
                   <AlertDialogFooter>
                     <AlertDialogCancel>{t("common.cancel")}</AlertDialogCancel>
diff --git a/src/components/ui/__tests__/inline-action.test.tsx b/src/components/ui/__tests__/inline-action.test.tsx
new file mode 100644
index 000000000..247b19e1e
--- /dev/null
+++ b/src/components/ui/__tests__/inline-action.test.tsx
@@ -0,0 +1,50 @@
+import { describe, expect, it } from "vitest";
+import { renderToStaticMarkup } from "react-dom/server";
+
+import { InlineAction } from "../inline-action";
+
+describe("<InlineAction>", () => {
+  it("is a non-submitting button with the touch floor and a focus ring", () => {
+    const html = renderToStaticMarkup(
+      <InlineAction>Open schedule</InlineAction>,
+    );
+    expect(html).toMatch(/^<button[^>]*type="button"/);
+    expect(html).toContain("pointer-coarse:min-h-11");
+    expect(html).toContain("focus-visible:ring-[3px]");
+    expect(html).toContain("text-primary");
+    expect(html).toContain("text-xs");
+  });
+
+  it("keeps an explicit submit type", () => {
+    const html = renderToStaticMarkup(
+      <InlineAction type="submit">Send</InlineAction>,
+    );
+    expect(html).toContain('type="submit"');
+  });
+
+  it("maps the tones and sizes", () => {
+    const muted = renderToStaticMarkup(
+      <InlineAction tone="muted" size="sm">
+        x
+      </InlineAction>,
+    );
+    expect(muted).toContain("text-muted-foreground");
+    expect(muted).toContain("hover:text-foreground");
+    expect(muted).toContain("text-sm");
+    expect(muted).not.toContain("text-primary");
+  });
+
+  it("renders a link through asChild without a button type", () => {
+    const html = renderToStaticMarkup(
+      <InlineAction asChild tone="foreground">
+        <a href="/insights/health-score" data-slot="history-link">
+          History
+        </a>
+      </InlineAction>,
+    );
+    expect(html).toMatch(/^<a /);
+    expect(html).not.toContain("type=");
+    expect(html).toContain('data-slot="history-link"');
+    expect(html).toContain("pointer-coarse:min-h-11");
+  });
+});
diff --git a/src/components/ui/inline-action.tsx b/src/components/ui/inline-action.tsx
new file mode 100644
index 000000000..5d81ebd88
--- /dev/null
+++ b/src/components/ui/inline-action.tsx
@@ -0,0 +1,72 @@
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+import { Slot } from "radix-ui";
+
+import { cn } from "@/lib/utils";
+
+/**
+ * A small text action that sits inside a line of content: "Open schedule"
+ * beside a value, "Select all" beside a group label, "View all" in a card
+ * header, a "Learn more" link under a hint. Not a button with a frame (that
+ * is `Button`), not a content link inside prose.
+ *
+ * It owns three things the hand-rolled copies kept getting wrong:
+ *
+ * - **The touch target.** On a coarse pointer the action is at least 44 px
+ *   tall (`pointer-coarse:min-h-11`, the same floor `Button` carries), so a
+ *   12 px "Edit" link is not a 16 px target on a phone. A fine pointer keeps
+ *   the line height, so the desktop layout does not move.
+ * - **The focus ring**, which several copies had none of.
+ * - **The tone vocabulary**: `primary` for the one forward action of a row,
+ *   `muted` for a secondary way out, `foreground` for an action that reads as
+ *   part of the content.
+ *
+ * Render a `Link` or `<a>` through `asChild`. A plain button gets
+ * `type="button"` so it never submits the form it sits in.
+ */
+const inlineActionVariants = cva(
+  "inline-flex items-center gap-1 rounded-sm underline-offset-4 transition-colors hover:underline focus-visible:ring-ring/50 focus-visible:ring-[3px] focus-visible:outline-none disabled:pointer-events-none disabled:opacity-50 pointer-coarse:min-h-11 [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-3.5",
+  {
+    variants: {
+      tone: {
+        primary: "text-primary",
+        muted: "text-muted-foreground hover:text-foreground",
+        foreground: "text-foreground/80 hover:text-foreground",
+      },
+      size: {
+        xs: "text-xs",
+        sm: "text-sm",
+      },
+    },
+    defaultVariants: {
+      tone: "primary",
+      size: "xs",
+    },
+  },
+);
+
+type InlineActionProps = React.ComponentProps<"button"> &
+  VariantProps<typeof inlineActionVariants> & {
+    asChild?: boolean;
+  };
+
+function InlineAction({
+  className,
+  tone,
+  size,
+  asChild = false,
+  type,
+  ...props
+}: InlineActionProps) {
+  const Comp = asChild ? Slot.Root : "button";
+  return (
+    <Comp
+      data-slot="inline-action"
+      type={asChild ? undefined : (type ?? "button")}
+      className={cn(inlineActionVariants({ tone, size }), className)}
+      {...props}
+    />
+  );
+}
+
+export { InlineAction, inlineActionVariants };
diff --git a/src/components/ui/learn-more-link.tsx b/src/components/ui/learn-more-link.tsx
index a5a4ee51a..a49b0af34 100644
--- a/src/components/ui/learn-more-link.tsx
+++ b/src/components/ui/learn-more-link.tsx
@@ -5,6 +5,7 @@ import { ExternalLink } from "lucide-react";
 
 import { learnLinkForMetric, learnUrl } from "@/lib/learn-links";
 import { useTranslations } from "@/lib/i18n/context";
+import { InlineAction } from "@/components/ui/inline-action";
 import { cn } from "@/lib/utils";
 
 /**
@@ -40,20 +41,18 @@ export function LearnMoreLink({ concept, className }: LearnMoreLinkProps) {
   const label = t("common.learnMore");
 
   return (
-    <a
-      href={guide.url}
-      target="_blank"
-      rel="noopener noreferrer"
-      data-slot="learn-more-link"
-      aria-label={`${label}: ${guide.title}`}
-      className={cn(
-        "text-muted-foreground hover:text-foreground inline-flex items-center gap-1 text-xs underline-offset-2 transition-colors hover:underline",
-        className,
-      )}
-    >
-      {label}
-      <ExternalLink className="h-3 w-3 shrink-0" aria-hidden="true" />
-    </a>
+    <InlineAction asChild tone="muted" className={className}>
+      <a
+        href={guide.url}
+        target="_blank"
+        rel="noopener noreferrer"
+        data-slot="learn-more-link"
+        aria-label={`${label}: ${guide.title}`}
+      >
+        {label}
+        <ExternalLink className="size-3" aria-hidden="true" />
+      </a>
+    </InlineAction>
   );
 }
 
diff --git a/src/components/vaccinations/vaccination-form.tsx b/src/components/vaccinations/vaccination-form.tsx
index af771e78b..361657bba 100644
--- a/src/components/vaccinations/vaccination-form.tsx
+++ b/src/components/vaccinations/vaccination-form.tsx
@@ -44,6 +44,7 @@ import { CatalogPicker } from "./catalog-picker";
 import { CustomVaccineSheet } from "./custom-vaccine-sheet";
 import { VaccinationDocumentPicker } from "./vaccination-document-picker";
 import { dayKeyAsUtcMidnight, isCalendarDateKey } from "@/lib/tz/date-only";
+import { InlineAction } from "@/components/ui/inline-action";
 
 /** The seven anatomical sites, mirroring the Prisma `VaccinationSite` enum. */
 export const VACCINATION_SITES = [
@@ -312,14 +313,14 @@ export function VaccinationForm({
           </FieldGroup>
         </div>
       ) : (
-        <button
-          type="button"
+        <InlineAction
+          tone="muted"
+          size="sm"
           data-slot="vaccination-series-reveal"
-          className="text-muted-foreground hover:text-foreground text-sm underline-offset-2 hover:underline"
           onClick={() => setSeriesOpen(true)}
         >
           {t("vaccinations.form.seriesToggle")}
-        </button>
+        </InlineAction>
       )}
 
       <FieldGroup htmlFor="vaccination-lot" label={t("vaccinations.form.lot")}>