diff --git a/src/components/MobileFeed.tsx b/src/components/MobileFeed.tsx
index 86b1244..91e55db 100644
--- a/src/components/MobileFeed.tsx
+++ b/src/components/MobileFeed.tsx
@@ -7,6 +7,8 @@ import { HexAvatar } from "./HexAvatar";
 import { PlayIcon, PostMenu } from "./PostCard";
 import { VideoPlayer } from "./VideoPlayer";
 import { FeaturedCarousel } from "./FeaturedCarousel";
+import { Logo } from "./Logo";
+import { useTheme } from "@/lib/use-theme";
 import { MobileDock } from "./MobileDock";
 import { BottomSheet } from "./BottomSheet";
 import { CommentsSection } from "./CommentsSection";
@@ -220,6 +222,35 @@ function PostSlide({ post, index, current, p }: { post: CardPost; index: number;
   );
 }
 
+/** Height of the progress rail, as a percent: the slide on screen out of the loaded slides. */
+export function railPercent(index: number, count: number): number {
+  if (count <= 0) return 0;
+  return Math.round((Math.min(Math.max(index, 0), count - 1) + 1) / count * 100);
+}
+
+const topIcon = { viewBox: "0 0 24 24", fill: "none", stroke: "currentColor", strokeWidth: 1.7, strokeLinecap: "round", strokeLinejoin: "round", "aria-hidden": true } as const;
+
+/** Frosted pills over the feed (spec "Top bar"): logo and wordmark left, theme toggle right. */
+function TopBar() {
+  const { theme, toggleTheme } = useTheme();
+  const next = theme === "dark" ? "light" : "dark";
+  return (
+    <div className="ph-top" data-testid="top-bar">
+      <div className="ph-brand ph-glass">
+        <Logo size={24} />
+        <span className="type-wordmark">MINNECT</span>
+      </div>
+      <button type="button" className="ph-theme ph-glass" data-testid="top-theme" aria-label={`Switch to ${next} theme`} onClick={toggleTheme}>
+        {theme === "dark" ? (
+          <svg {...topIcon}><circle cx="12" cy="12" r="4" /><path d="M12 2v2M12 20v2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M2 12h2M20 12h2M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4" /></svg>
+        ) : (
+          <svg {...topIcon}><path d="M20.5 14.5A8.5 8.5 0 0 1 9.5 3.5a8.5 8.5 0 1 0 11 11z" /></svg>
+        )}
+      </button>
+    </div>
+  );
+}
+
 function ChevronDown() {
   return (
     <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
@@ -371,6 +402,8 @@ export function MobileFeed(p: FeedViewProps) {
   const currentPost = p.status === "ready" && currentPostIndex >= 0 ? p.posts[currentPostIndex] ?? null : null;
   const kind: CurrentSlide["kind"] = currentPost ? "post" : featuredAt >= 0 && index === featuredAt ? "featured" : "load";
 
+  const onMedia = !!currentPost && currentPost.media.some((m) => m.kind === "video" || m.src);
+
   useEffect(() => {
     onCurrentChange?.({ index, kind, post: currentPost });
   }, [index, kind, currentPost, onCurrentChange]);
@@ -383,12 +416,16 @@ export function MobileFeed(p: FeedViewProps) {
   }, [index]);
 
   return (
-    <section className="reel-feed" aria-label="Home feed">
+    <section className="reel-feed" aria-label="Home feed" data-on-media={onMedia ? "true" : "false"}>
       {p.newCount > 0 && p.status === "ready" ? (
         <div className="reel-pill">
           <GrowButton label={p.newCount === 1 ? "1 new post" : `${p.newCount} new posts`} onClick={p.onShowNew} />
         </div>
       ) : null}
+      <TopBar />
+      <div className="rail-v" data-testid="feed-rail" aria-hidden="true">
+        <i style={{ height: `${railPercent(index, slideCount)}%` }} />
+      </div>
       <div
         className="reel"
         data-testid="feed-reel"
diff --git a/src/styles/mobile.css b/src/styles/mobile.css
index ff32f9b..e9204eb 100644
--- a/src/styles/mobile.css
+++ b/src/styles/mobile.css
@@ -174,7 +174,7 @@
 .is-cur.slide-playing .slide-meta { animation: none; }
 
 /* Own-post menu: frosted "..." at the top right, the card's delete confirm under it. */
-.slide-menu { position: absolute; top: 70px; right: 12px; z-index: 6; }
+.slide-menu { position: absolute; top: calc(70px + env(safe-area-inset-top, 0px)); right: 12px; z-index: 6; }
 .slide-menu-btn {
   appearance: none;
   display: grid;
@@ -309,7 +309,7 @@
 /* New-posts pill floats over the top of the reel. */
 .reel-pill {
   position: absolute;
-  top: 76px;
+  top: calc(76px + env(safe-area-inset-top, 0px));
   left: 0;
   right: 0;
   z-index: 8;
@@ -377,3 +377,56 @@
   .dk-beat svg { animation: none !important; }
   .slide-art { transition: none !important; }
 }
+
+/* Top bar (spec "Top bar"): frosted pills over the feed. Over a media slide they use a
+   dark translucent glass with white text; over a text slide the theme glass. The bar
+   ends 56px (plus the top inset) down, above the own-post menu at 70px. */
+.ph-top {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  z-index: 20;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+  padding: calc(14px + env(safe-area-inset-top, 0px)) 14px 0;
+  pointer-events: none;
+}
+.ph-top > * { pointer-events: auto; }
+.ph-glass {
+  background: var(--glass);
+  -webkit-backdrop-filter: blur(16px) saturate(1.6);
+  backdrop-filter: blur(16px) saturate(1.6);
+  box-shadow: inset 0 0 0 1px var(--line);
+  color: var(--ink);
+  transition: background .3s var(--ease), color .3s var(--ease);
+}
+.reel-feed[data-on-media="true"] .ph-glass {
+  background: var(--media-glass);
+  color: var(--on-media);
+  box-shadow: inset 0 0 0 1px var(--on-media-line);
+}
+.ph-brand { display: flex; align-items: center; gap: 8px; height: 42px; padding: 0 14px 0 10px; border-radius: 14px; }
+.ph-brand .type-wordmark { font-size: 13px; }
+.ph-theme { appearance: none; border: 0; margin: 0; display: grid; place-items: center; width: 42px; height: 42px; padding: 0; border-radius: 14px; cursor: pointer; }
+.ph-theme svg { width: 20px; height: 20px; }
+.ph-theme:active { transform: scale(.94); }
+
+/* Progress rail: position in the loaded feed, on the right edge. */
+.rail-v {
+  position: absolute;
+  right: 5px;
+  top: 50%;
+  height: 110px;
+  margin-top: -55px;
+  width: 3px;
+  border-radius: 2px;
+  background: var(--line-2);
+  z-index: 15;
+  overflow: hidden;
+  pointer-events: none;
+}
+.rail-v i { display: block; width: 100%; background: var(--accent); border-radius: 2px; transition: height .5s var(--ease); }
+@media (prefers-reduced-motion: reduce) { .rail-v i { transition: none; } }
diff --git a/tests/mobile-feed.test.ts b/tests/mobile-feed.test.ts
index f007e86..618ffae 100644
--- a/tests/mobile-feed.test.ts
+++ b/tests/mobile-feed.test.ts
@@ -3,7 +3,7 @@ import { createElement } from "react";
 import { renderToStaticMarkup } from "react-dom/server";
 import { readFileSync } from "node:fs";
 import { FeedView, type FeedViewProps } from "@/components/FeedView";
-import { pickCurrent, isDoubleTap, isTapTarget, featuredSlideIndex } from "@/components/MobileFeed";
+import { pickCurrent, isDoubleTap, isTapTarget, featuredSlideIndex, railPercent } from "@/components/MobileFeed";
 import { FIXTURE_DISCOVER } from "@/dev/fixtures";
 import { CompactLayoutContext, isCompactWidth } from "@/components/layout-context";
 import { toCardPosts } from "@/lib/feed-model";
@@ -171,3 +171,27 @@ describe("featured experts slide", () => {
     expect(render({})).not.toContain("feed-slide-featured");
   });
 });
+
+describe("top bar and progress rail", () => {
+  it("renders the brand pill, the theme toggle and the rail", () => {
+    const html = render({});
+    expect(html).toContain('data-testid="top-bar"');
+    expect(html).toContain("MINNECT");
+    expect(html).toMatch(/data-testid="top-theme"[^>]*aria-label="Switch to (light|dark) theme"/);
+    expect(html).toContain('data-testid="feed-rail"');
+    expect(html).toContain('data-on-media="false"');
+  });
+
+  it("sizes the rail by the slide on screen out of the loaded slides", () => {
+    expect(railPercent(0, 4)).toBe(25);
+    expect(railPercent(2, 4)).toBe(75);
+    expect(railPercent(9, 4)).toBe(100);
+    expect(railPercent(0, 0)).toBe(0);
+  });
+
+  it("keeps the own-post menu below the bar and the safe area", () => {
+    const css = readFileSync("src/styles/mobile.css", "utf8");
+    expect(css).toMatch(/\.slide-menu \{[^}]*top: calc\(70px \+ env\(safe-area-inset-top/);
+    expect(css).toMatch(/\.ph-top \{[^}]*safe-area-inset-top/);
+  });
+});