diff --git a/src/features/observers/ObserverSummary.tsx b/src/features/observers/ObserverSummary.tsx
index 30862f7..98fea58 100644
--- a/src/features/observers/ObserverSummary.tsx
+++ b/src/features/observers/ObserverSummary.tsx
@@ -1,48 +1,69 @@
 import { useTranslation } from "react-i18next";
 import { Timestamp } from "../../components/Timestamp";
 import { CopyButton } from "../../components/CopyButton";
-import { formatBattery, formatRadioParts, formatUptime, formatUtc } from "../../lib/formatters";
+import { formatAbsolute, formatBattery, formatRadioParts, formatUptime, formatUtc, timeAgoParts } from "../../lib/formatters";
 import { useTick } from "../../hooks/useTick";
 import { observerNoiseFloor } from "./observer-stats";
-import { Card, StatCard } from "../stats/cards";
+import { Card } from "../stats/cards";
+import { Tooltip } from "../../components/Tooltip";
 import { Field } from "../../components/DetailPanel";
 import { IataChip } from "../../components/IataChip";
 import type { Observer } from "./types";
 import type { ObserverActivity, TelemetryPoint } from "../stats/types";
 
+// Numbers at full size, units and words smaller, so "30d 16h 52m" and "-119 dBm" scan as values.
+function Measure({ text }: { text: string }) {
+  if (!/\d/.test(text)) return <>{text}</>;
+  return <>{text.split(/(-?[\d.,]+)/).filter(Boolean).map((part, i) =>
+    /\d/.test(part) ? <span key={i}>{part}</span> : <span key={i} className="text-sm font-semibold text-text-muted">{part}</span>)}</>;
+}
+
 export function ObserverSummary({ observer, activity, points, pending = false }: { observer: Observer; activity?: ObserverActivity; points: TelemetryPoint[]; pending?: boolean }) {
   const { t, i18n } = useTranslation(); const now = useTick();
   const summary = activity?.summary;
   const statusFresh = observer.lastStatusAt != null && now - observer.lastStatusAt < 300_000;
   const reportedNoise = observerNoiseFloor(observer);
   const noise = reportedNoise ?? points.at(-1)?.noiseFloorDb;
-  const cards = [
-    ["records", summary?.recordedPackets.toLocaleString(i18n.resolvedLanguage) ?? "—"],
-    ["lastHour", summary?.lastCompleteHour.toLocaleString(i18n.resolvedLanguage) ?? "—"],
-    ["lastPacket", summary?.latestRecordedAt != null ? <Timestamp value={summary.latestRecordedAt} /> : "—"],
-    ["battery", observer.batteryLevel != null ? formatBattery(observer.batteryLevel) : "—"],
-    ["uptime", observer.uptimeSeconds != null ? formatUptime(observer.uptimeSeconds) : "—"],
-    ["noise", noise != null && Number.isFinite(noise) ? `${noise.toLocaleString(i18n.resolvedLanguage, { maximumFractionDigits: 1 })} dBm` : "—"],
-  ] as const;
+  const ago = (at: number) => {
+    const { count, unit } = timeAgoParts(at);
+    return t("timestamp.ago", { duration: t(`timestamp.unit.${unit}`, { count }) });
+  };
+  const hour = (at: number) => formatUtc(at, { timeOnly: true }).slice(0, 2);
+  const cards: { key: string; label: string; value: string; title?: string }[] = [
+    { key: "records", label: t("observerPage.records"), value: summary?.recordedPackets.toLocaleString(i18n.resolvedLanguage) ?? "—" },
+    {
+      key: "lastHour",
+      label: summary ? t("observerPage.hourWindow", { start: hour(summary.lastCompleteHourStart), end: hour(summary.lastCompleteHourEnd) }) : t("observerPage.lastHour"),
+      value: summary?.lastCompleteHour.toLocaleString(i18n.resolvedLanguage) ?? "—",
+    },
+    {
+      key: "lastPacket",
+      label: t("observerPage.lastPacket"),
+      value: summary?.latestRecordedAt != null ? ago(summary.latestRecordedAt) : "—",
+      title: summary?.latestRecordedAt != null ? formatAbsolute(summary.latestRecordedAt) : undefined,
+    },
+    { key: "battery", label: t("observerPage.battery"), value: observer.batteryLevel != null ? formatBattery(observer.batteryLevel) : "—" },
+    { key: "uptime", label: t("observerPage.uptime"), value: observer.uptimeSeconds != null ? formatUptime(observer.uptimeSeconds) : "—" },
+    {
+      key: "noise",
+      label: t("observerPage.lastNoise"),
+      value: noise != null && Number.isFinite(noise) ? `${noise.toLocaleString(i18n.resolvedLanguage, { maximumFractionDigits: 1 })} dBm` : "—",
+    },
+  ];
   return <>
-    <div className="flex flex-wrap items-start justify-between gap-3">
-      <div className="min-w-0"><h1 className="break-words text-lg font-semibold text-text-bright">{observer.displayName ?? observer.id.slice(0, 8)}</h1>
-        <div className="mt-1.5 flex flex-wrap items-center gap-2">
-          <span role="img" aria-label={t(`observerPage.${observer.lastStatusAt == null ? "statusMissing" : statusFresh ? "statusRecent" : "statusStale"}`)} title={t(`observerPage.${observer.lastStatusAt == null ? "statusMissing" : statusFresh ? "statusRecent" : "statusStale"}`)} className={`inline-flex items-center ${observer.lastStatusAt == null ? "text-text-muted" : statusFresh ? "text-green" : "text-warn"}`}>
-            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" aria-hidden="true"><circle cx="12" cy="12" r="9" />{statusFresh ? <path d="m7 12 3 3 7-7" /> : <><path d="M12 7v6" /><circle cx="12" cy="17" r=".5" fill="currentColor" /></>}</svg>
-          </span>
-          <IataChip>{observer.iata}</IataChip>
-        </div>
-      </div>
+    <div className="flex min-w-0 flex-wrap items-center gap-x-2.5 gap-y-1">
+      <h1 className="min-w-0 break-words text-lg font-semibold text-text-bright">{observer.displayName ?? observer.id.slice(0, 8)}</h1>
+      <span role="img" aria-label={t(`observerPage.${observer.lastStatusAt == null ? "statusMissing" : statusFresh ? "statusRecent" : "statusStale"}`)} title={t(`observerPage.${observer.lastStatusAt == null ? "statusMissing" : statusFresh ? "statusRecent" : "statusStale"}`)} className={`inline-flex items-center ${observer.lastStatusAt == null ? "text-text-muted" : statusFresh ? "text-green" : "text-warn"}`}>
+        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" aria-hidden="true"><circle cx="12" cy="12" r="9" />{statusFresh ? <path d="m7 12 3 3 7-7" /> : <><path d="M12 7v6" /><circle cx="12" cy="17" r=".5" fill="currentColor" /></>}</svg>
+      </span>
+      <IataChip>{observer.iata}</IataChip>
     </div>
     <ul role="list" aria-label={t("observerPage.metrics")} className="grid grid-cols-2 gap-3 md:grid-cols-3 2xl:grid-cols-6">
-      {cards.map(([key, value]) => {
-        const note = key === "lastHour" && summary ? `${formatUtc(summary.lastCompleteHourStart, { timeOnly: true })}–${formatUtc(summary.lastCompleteHourEnd, { timeOnly: true })} UTC`
-          : key === "noise" && noise != null ? t(reportedNoise != null ? "observerPage.latestStatus" : "observerPage.latestTelemetry")
-          : undefined;
-        return <li key={key} className="min-w-0">
-          <StatCard label={t(`observerPage.${key}`)} value={value} accent="var(--color-primary)" />
-          <p className="mt-1 min-h-4 text-xs text-text-muted">{note}</p>
+      {cards.map(({ key, label, value, title }) => {
+        const shown = <span className="font-mono text-xl font-bold tabular-nums text-text-bright sm:text-2xl"><Measure text={value} /></span>;
+        return <li key={key} className="flex min-w-0 flex-col items-center justify-center gap-1 rounded-lg border border-border bg-bg-surface px-2 py-3 text-center">
+          <span className="font-mono text-[10px] font-semibold uppercase tracking-wider text-text-muted">{label}</span>
+          {title ? <Tooltip label={title}>{shown}</Tooltip> : shown}
         </li>;
       })}
     </ul>
diff --git a/src/features/stats/ClockDriftTab.tsx b/src/features/stats/ClockDriftTab.tsx
index 9d022f9..4d1235d 100644
--- a/src/features/stats/ClockDriftTab.tsx
+++ b/src/features/stats/ClockDriftTab.tsx
@@ -37,7 +37,7 @@ export function ClockDriftTab() {
       id: "drift",
       header: t("clockDrift.drift"),
       className: "tabular-nums",
-      cell: (e) => <span className={driftClass(e.clockDriftSeconds)}>{formatClockDrift(e.clockDriftSeconds, { inSync: t("clockDrift.inSync"), ahead: t("clockDrift.ahead"), behind: t("clockDrift.behind") })}</span>,
+      cell: (e) => <span className={`whitespace-nowrap ${driftClass(e.clockDriftSeconds)}`}>{formatClockDrift(e.clockDriftSeconds, { inSync: t("clockDrift.inSync"), ahead: t("clockDrift.ahead"), behind: t("clockDrift.behind") })}</span>,
       sortValue: (e) => Math.abs(e.clockDriftSeconds),
     },
     {
@@ -58,6 +58,23 @@ export function ClockDriftTab() {
       ),
     },
   ], [t]);
+  const drift = (e: ClockDriftEntry) =>
+    formatClockDrift(e.clockDriftSeconds, { inSync: t("clockDrift.inSync"), ahead: t("clockDrift.ahead"), behind: t("clockDrift.behind") });
+  const renderCard = (e: ClockDriftEntry) => (
+    <div className="flex flex-col gap-1.5 font-mono text-xs">
+      <div className="flex items-center justify-between gap-2">
+        <span className={`min-w-0 flex-1 truncate ${e.nodeName ? "text-text-normal" : "italic text-text-dim"}`}>{e.nodeName ?? e.nodeId.slice(0, 8)}</span>
+        <span className="shrink-0"><Badge variant="default">{e.nodeTypeName}</Badge></span>
+      </div>
+      <div className="flex items-center justify-between gap-2">
+        <span className={`tabular-nums ${driftClass(e.clockDriftSeconds)}`}>{drift(e)}</span>
+        <span className="shrink-0 text-text-muted"><Timestamp value={e.clockCheckedAt} /></span>
+      </div>
+      {(e.iatas ?? []).length > 0 && (
+        <div className="flex flex-wrap gap-1">{e.iatas!.map((i) => <IataChip key={i.iata}>{i.iata}</IataChip>)}</div>
+      )}
+    </div>
+  );
 
   return (
     <div className="flex h-full flex-col">
@@ -73,6 +90,7 @@ export function ClockDriftTab() {
         isLoading={loading}
         emptyLabel={clockDrift.isError ? t("common.loadFailed") : t("clockDrift.empty")}
         defaultSort={{ id: "drift", direction: "desc" }}
+        renderCard={renderCard}
       />
     </div>
   );
diff --git a/src/features/stats/ScopesTab.tsx b/src/features/stats/ScopesTab.tsx
index 49a3ea8..d150342 100644
--- a/src/features/stats/ScopesTab.tsx
+++ b/src/features/stats/ScopesTab.tsx
@@ -25,10 +25,7 @@ export function ScopesTab() {
 
   return (
     <div className="mx-auto flex w-full min-w-0 max-w-[1200px] flex-col gap-3.5 p-4">
-      <div className="flex flex-wrap items-start justify-between gap-3">
-        <div className="flex items-center gap-2"><h2 className="text-lg font-semibold text-text-bright">{t("scopes.title")}</h2><InfoTip text={[t("scopes.subtitle"), t("scopes.measurement")]} /></div>
-        <button type="button" onClick={() => void query.refetch()} disabled={query.isFetching || query.isPending} className="rounded border border-border px-3 py-1.5 text-xs text-text-normal hover:bg-bg-raised disabled:opacity-50">{t("scopes.refresh")}</button>
-      </div>
+      <div className="flex items-center gap-2"><h2 className="text-lg font-semibold text-text-bright">{t("scopes.title")}</h2><InfoTip text={[t("scopes.subtitle"), t("scopes.measurement")]} /></div>
       <label className="flex max-w-sm flex-col gap-1 text-xs text-text-muted">{t("scopes.search")}
         <input type="search" value={search} onChange={(event) => setSearch(event.target.value)} placeholder="#bc, #east…" className="rounded border border-border bg-bg-raised px-3 py-2 text-base text-text-bright outline-none focus:border-primary sm:text-sm" />
       </label>
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index ce83cad..899406f 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -206,7 +206,6 @@
     "scopes": {
       "title": "Transport scopes",
       "subtitle": "Retained data and memberships for the selected region.",
-      "refresh": "Refresh scopes",
       "search": "Find a scope",
       "error": "Could not load scopes. Try refreshing.",
       "active": "Scopes with data",
@@ -266,10 +265,10 @@
       "metrics": "Observer metrics",
       "records": "Recorded packets",
       "lastHour": "Last complete hour",
-      "lastPacket": "Last recorded packet",
+      "lastPacket": "Last packet",
       "battery": "Battery",
       "batteryV": "Battery V",
-      "uptime": "Device uptime",
+      "uptime": "Uptime",
       "noise": "Noise floor",
       "noiseDbm": "Noise dBm",
       "packets": "Packets",
@@ -310,8 +309,6 @@
       "mean": "Average",
       "minimum": "Minimum",
       "unknown": "Unknown",
-      "latestStatus": "Latest status",
-      "latestTelemetry": "Latest telemetry interval",
       "recording": "Loading observer…",
       "hour": "hour",
       "day": "day",
@@ -319,7 +316,9 @@
       "directory": "All observers",
       "sidebarSearch": "Search observers",
       "noMatches": "No matches",
-      "none": "No observers"
+      "none": "No observers",
+      "hourWindow": "Packets {{start}}–{{end}} UTC",
+      "lastNoise": "Last noise floor"
     },
     "observerCompare": {
       "open": "Compare with…",
diff --git a/src/i18n/locales/fr.json b/src/i18n/locales/fr.json
index c78e573..1664513 100644
--- a/src/i18n/locales/fr.json
+++ b/src/i18n/locales/fr.json
@@ -209,7 +209,6 @@
     "scopes": {
       "title": "Scopes de transport",
       "subtitle": "Données conservées et appartenances pour la région sélectionnée.",
-      "refresh": "Actualiser les scopes",
       "search": "Rechercher un scope",
       "error": "Impossible de charger les scopes. Réessayez.",
       "active": "Scopes avec données",
@@ -270,7 +269,7 @@
       "metrics": "Mesures de l’observateur",
       "records": "Paquets enregistrés",
       "lastHour": "Dernière heure complète",
-      "lastPacket": "Dernier paquet enregistré",
+      "lastPacket": "Dernier paquet",
       "battery": "Batterie",
       "batteryV": "Batterie V",
       "uptime": "Durée de fonctionnement",
@@ -314,8 +313,6 @@
       "mean": "Moyenne",
       "minimum": "Minimum",
       "unknown": "Inconnu",
-      "latestStatus": "Dernier état",
-      "latestTelemetry": "Dernière période de télémétrie",
       "recording": "Chargement de l’observateur…",
       "hour": "heure",
       "day": "jour",
@@ -323,7 +320,9 @@
       "directory": "Tous les observateurs",
       "sidebarSearch": "Rechercher les observateurs",
       "noMatches": "Aucun résultat",
-      "none": "Aucun observateur"
+      "none": "Aucun observateur",
+      "hourWindow": "Paquets {{start}}–{{end}} h UTC",
+      "lastNoise": "Dernier bruit de fond"
     },
     "observerCompare": {
       "open": "Comparer avec…",
diff --git a/tests/features/observers/ObserverSummary.compact.test.tsx b/tests/features/observers/ObserverSummary.compact.test.tsx
index 254a8c7..94ffca2 100644
--- a/tests/features/observers/ObserverSummary.compact.test.tsx
+++ b/tests/features/observers/ObserverSummary.compact.test.tsx
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { render, screen } from "@testing-library/react";
+import { render, screen, within } from "@testing-library/react";
 import { ObserverSummary } from "../../../src/features/observers/ObserverSummary";
 import type { Observer } from "../../../src/features/observers/types";
 import type { ObserverActivity, TelemetryPoint } from "../../../src/features/stats/types";
@@ -22,21 +22,30 @@ describe("compact observer header", () => {
 });
 
 describe("observer summary card notes", () => {
-  it("wraps the last-complete-hour window under its card instead of a non-wrapping sublabel", () => {
+  it("keeps the status icon and IATA chip on the name row", () => {
+    render(<ObserverSummary observer={observer} points={[]} />);
+    const row = screen.getByRole("heading", { level: 1 }).parentElement!;
+    expect(screen.getByRole("img", { name: "Status is stale" }).parentElement).toBe(row);
+    expect(screen.getByText("YKF").parentElement).toBe(row);
+  });
+
+  it("names the last complete hour by its UTC window instead of a note under the card", () => {
     const activity = { summary: {
       recordedPackets: 5, lastCompleteHour: 3, lastCompleteHourStart: 0, lastCompleteHourEnd: 3_600_000, latestRecordedAt: null,
     } } as unknown as ObserverActivity;
     render(<ObserverSummary observer={observer} activity={activity} points={[]} />);
-    const note = screen.getByText("00:00–01:00 UTC");
-    expect(note).not.toHaveClass("whitespace-nowrap");
-    expect(note).toHaveClass("mt-1");
+    const tile = screen.getByText("Packets 00–01 UTC").closest("li")!;
+    expect(tile).toHaveTextContent("3");
+    expect(tile).toHaveClass("text-center");
+    expect(screen.queryByText(/00:00–01:00/)).not.toBeInTheDocument();
   });
 
-  it("wraps the noise-floor telemetry note under its card the same way", () => {
+  it("labels the noise tile as the last reading and sets the unit apart from the number", () => {
     const points = [{ noiseFloorDb: -91 } as unknown as TelemetryPoint];
     render(<ObserverSummary observer={observer} points={points} />);
-    const note = screen.getByText("Latest telemetry interval");
-    expect(note).not.toHaveClass("whitespace-nowrap");
-    expect(note).toHaveClass("mt-1");
+    const tile = screen.getByText("Last noise floor").closest("li")!;
+    expect(screen.queryByText(/Latest telemetry interval|Latest status/)).not.toBeInTheDocument();
+    expect(within(tile).getByText("-91")).not.toHaveClass("text-sm");
+    expect(within(tile).getByText("dBm")).toHaveClass("text-sm");
   });
 });
diff --git a/tests/features/stats/ClockDriftTab.test.tsx b/tests/features/stats/ClockDriftTab.test.tsx
index 0823f63..58c636d 100644
--- a/tests/features/stats/ClockDriftTab.test.tsx
+++ b/tests/features/stats/ClockDriftTab.test.tsx
@@ -66,3 +66,19 @@ it("retains valid values during a healthy background refresh", () => {
   expect(screen.getByText("+59m 59s ahead")).toHaveClass("text-warn");
   expect(screen.getByText("-1h 0m behind")).toHaveClass("text-danger");
 });
+
+it("shows compact cards instead of a wide table on a phone, worst first", async () => {
+  await act(() => i18n.changeLanguage("en"));
+  const media = window.matchMedia("(max-width: 767px)");
+  const spy = vi.spyOn(window, "matchMedia").mockImplementation((q) => ({ ...media, media: q, matches: q === "(max-width: 767px)" }));
+  try {
+    const { container } = render(<ClockDriftTab />);
+    expect(container.querySelector("table")).toBeNull();
+    const cards = screen.getAllByRole("button", { name: /Beta|Alpha/ });
+    expect(cards.map((c) => c.textContent)).toEqual([expect.stringContaining("Beta"), expect.stringContaining("Alpha")]);
+    expect(cards[0]).toHaveTextContent("-1h 0m behind");
+    expect(cards[0]).toHaveTextContent("YOW");
+  } finally {
+    spy.mockRestore();
+  }
+});
diff --git a/tests/features/stats/ScopesTab.test.tsx b/tests/features/stats/ScopesTab.test.tsx
index f0c7277..f5e7e2e 100644
--- a/tests/features/stats/ScopesTab.test.tsx
+++ b/tests/features/stats/ScopesTab.test.tsx
@@ -22,8 +22,7 @@ it("translates scope counts and membership guidance without changing scope names
   expect(screen.getByText("Appartenances d’observateurs")).toBeInTheDocument();
   expect(screen.getByText(/plusieurs scopes/)).toHaveTextContent("sans période sélectionnée");
   expect(screen.getByText("2 sur 2 scopes")).toBeInTheDocument();
-  fireEvent.click(screen.getByRole("button", { name: "Actualiser les scopes" }));
-  expect(query.refetch).toHaveBeenCalledOnce();
+  expect(screen.queryByRole("button", { name: /Actualiser/ })).not.toBeInTheDocument();
 });
 
 it("keeps the current search and chart values when changing language", async () => {
@@ -84,8 +83,7 @@ it("shows exact scope counts, keeps membership semantics explicit and filters th
   fireEvent.change(screen.getByRole("searchbox", { name: "Find a scope" }), { target: { value: "WEST" } });
   expect(screen.queryByText("#east")).not.toBeInTheDocument();
   expect(screen.getByText(/1 of 2 scopes/)).toBeInTheDocument();
-  fireEvent.click(screen.getByRole("button", { name: "Refresh scopes" }));
-  expect(query.refetch).toHaveBeenCalledOnce();
+  expect(screen.queryByRole("button", { name: /Refresh/ })).not.toBeInTheDocument();
 });
 
 it("hides stale values while a region change is pending and on errors", () => {