diff --git a/backend/app/routers/api.py b/backend/app/routers/api.py
index 7fbec0f..97cac1f 100644
--- a/backend/app/routers/api.py
+++ b/backend/app/routers/api.py
@@ -372,6 +372,20 @@ async def meetup_session(meetup_id: str, authorization: str | None = Header(None
   if mode not in ("online", "hybrid"):
     can_join = False
     lock = lock or "offline"
+  elif can_join:
+    # Live rooms need login + RSVP (organizer exempt)
+    if not user:
+      can_join = False
+      lock = "login_required"
+    else:
+      organizer_id = meetup.get("organizer_id") or ""
+      is_host = bool(organizer_id) and organizer_id == user["id"]
+      if not is_host:
+        rsvps = community_store.user_rsvp_ids(user["id"])
+        mid = meetup.get("id") or meetup_id
+        if mid not in rsvps and meetup_id not in rsvps:
+          can_join = False
+          lock = "rsvp_required"
 
   session = MeetupSession(
     canJoin=can_join,
diff --git a/frontend/src/app/changelog/page.tsx b/frontend/src/app/changelog/page.tsx
index a4c5e16..1c1001e 100644
--- a/frontend/src/app/changelog/page.tsx
+++ b/frontend/src/app/changelog/page.tsx
@@ -8,6 +8,14 @@ export const metadata: Metadata = {
 };
 
 const LOGS = [
+  {
+    date: "2026-09-04",
+    tag: "直播报名 · 私信角标",
+    items: [
+      "线上直播需登录并报名后进入；支持一键报名进房；显示活动时间；手机默认视频布局",
+      "右上角私信图标显示未读数",
+    ],
+  },
   {
     date: "2026-09-04",
     tag: "直播 iframe 修复",
diff --git a/frontend/src/app/globals.css b/frontend/src/app/globals.css
index 0e5af84..ed49ecd 100644
--- a/frontend/src/app/globals.css
+++ b/frontend/src/app/globals.css
@@ -11057,10 +11057,24 @@ a.weather-card:hover {
   font-size: 0.8rem;
   color: var(--text-muted);
 }
+.live-schedule-banner,
+.live-schedule {
+  padding: 8px 20px;
+  font-size: 0.85rem;
+  color: var(--text-muted);
+  background: var(--bg-card);
+  border-bottom: var(--border-glass);
+}
+.live-schedule {
+  padding: 0;
+  border: none;
+  background: transparent;
+  margin-bottom: 0.5rem;
+}
 .live-stage {
   flex: 1;
   display: grid;
-  min-height: calc(100vh - 110px);
+  min-height: 0;
 }
 .live-stage.layout-split { grid-template-columns: 1fr 380px; }
 .live-stage.layout-video { grid-template-columns: 1fr; }
@@ -11202,10 +11216,14 @@ a.weather-card:hover {
     width: 100%;
     justify-content: flex-start;
   }
+  .live-external-links {
+    padding: 8px 12px;
+  }
   .live-stage {
-    min-height: calc(100vh - 110px);
+    min-height: 50vh;
   }
   .live-stage.layout-split { grid-template-columns: 1fr; }
+  .live-iframe { min-height: 50vh; }
   .live-iframe { min-height: 280px; }
   .live-chat { border-left: none; border-top: var(--border-glass); min-height: 280px; }
 }
diff --git a/frontend/src/app/meetups/[id]/live/page.tsx b/frontend/src/app/meetups/[id]/live/page.tsx
index dc94839..78ec0aa 100644
--- a/frontend/src/app/meetups/[id]/live/page.tsx
+++ b/frontend/src/app/meetups/[id]/live/page.tsx
@@ -14,7 +14,12 @@ export default async function MeetupLivePage({ params }: { params: Promise<{ id:
 
   return (
     <SiteShell showFooter={false}>
-      <MeetupLiveClient meetupId={id} title={title} />
+      <MeetupLiveClient
+        meetupId={id}
+        title={title}
+        date={meetup?.date || ""}
+        time={meetup?.time || ""}
+      />
     </SiteShell>
   );
 }
diff --git a/frontend/src/components/MeetupLiveClient.tsx b/frontend/src/components/MeetupLiveClient.tsx
index f1240ca..0a843b0 100644
--- a/frontend/src/components/MeetupLiveClient.tsx
+++ b/frontend/src/components/MeetupLiveClient.tsx
@@ -5,19 +5,45 @@ import Link from "next/link";
 import { api } from "@/lib/api";
 import { useAuth } from "@/lib/auth";
 import { useI18n } from "@/lib/i18n";
+import { useToast } from "@/lib/toast";
 import type { MeetupSession } from "@/lib/types";
 import RingNext from "@/components/RingNext";
 import { useRingSteps } from "@/lib/rings";
 
-export default function MeetupLiveClient({ meetupId, title }: { meetupId: string; title: string }) {
+type Layout = "split" | "video" | "chat";
+
+function defaultLayout(): Layout {
+  if (typeof window !== "undefined" && window.matchMedia("(max-width: 768px)").matches) {
+    return "video";
+  }
+  return "split";
+}
+
+export default function MeetupLiveClient({
+  meetupId,
+  title,
+  date = "",
+  time = "",
+}: {
+  meetupId: string;
+  title: string;
+  date?: string;
+  time?: string;
+}) {
   const { token } = useAuth();
+  const { toast } = useToast();
   const { t } = useI18n();
   const rings = useRingSteps();
   const [session, setSession] = useState<MeetupSession | null>(null);
   const [error, setError] = useState(false);
-  const [layout, setLayout] = useState<"split" | "video" | "chat">("split");
+  const [layout, setLayout] = useState<Layout>("split");
+  const [rsvping, setRsvping] = useState(false);
 
   useEffect(() => {
+    setLayout(defaultLayout());
+  }, []);
+
+  const loadSession = () => {
     setError(false);
     setSession(null);
     api
@@ -27,8 +53,29 @@ export default function MeetupLiveClient({ meetupId, title }: { meetupId: string
         setSession(null);
         setError(true);
       });
+  };
+
+  useEffect(() => {
+    loadSession();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [meetupId, token]);
 
+  const handleRsvpAndJoin = async () => {
+    if (!token) {
+      return;
+    }
+    setRsvping(true);
+    try {
+      await api.rsvpMeetup(meetupId, undefined, token);
+      toast(t.meetups.rsvpOk, "success");
+      loadSession();
+    } catch {
+      toast(t.meetups.rsvpFail, "error");
+    } finally {
+      setRsvping(false);
+    }
+  };
+
   if (error) {
     return (
       <div className="live-page">
@@ -64,26 +111,45 @@ export default function MeetupLiveClient({ meetupId, title }: { meetupId: string
           ? t.live.hostRequired
           : reason === "offline"
             ? t.live.offlineOnly
-            : t.live.loginRequired;
-    const href =
-      reason === "vip_required"
-        ? "/join"
-        : reason === "offline"
-          ? "/meetups"
-          : `/login?next=/meetups/${meetupId}/live`;
-    const label =
-      reason === "vip_required" ? t.join.payBtn : reason === "offline" ? t.live.back : t.nav.login;
+            : reason === "rsvp_required"
+              ? t.live.rsvpRequired
+              : t.live.loginRequired;
 
     return (
       <div className="live-page">
         <div className="container">
           <div className="live-gate reveal">
             <h2>{title}</h2>
+            {(date || time) && (
+              <p className="live-schedule">
+                🗓️ {date}
+                {time ? ` ${time}` : ""}
+              </p>
+            )}
             <p>{copy}</p>
             <div className="dating-empty-actions">
-              <Link href={href} className="btn btn-primary">
-                {label}
-              </Link>
+              {reason === "rsvp_required" && token ? (
+                <button
+                  type="button"
+                  className="btn btn-primary"
+                  disabled={rsvping}
+                  onClick={() => void handleRsvpAndJoin()}
+                >
+                  {rsvping ? "…" : t.live.rsvpJoin}
+                </button>
+              ) : reason === "vip_required" ? (
+                <Link href="/join" className="btn btn-primary">
+                  {t.join.payBtn}
+                </Link>
+              ) : reason === "offline" ? (
+                <Link href="/meetups" className="btn btn-primary">
+                  {t.live.back}
+                </Link>
+              ) : (
+                <Link href={`/login?next=/meetups/${meetupId}/live`} className="btn btn-primary">
+                  {t.nav.login}
+                </Link>
+              )}
               <Link href="/meetups" className="btn">
                 {t.live.back}
               </Link>
@@ -94,6 +160,11 @@ export default function MeetupLiveClient({ meetupId, title }: { meetupId: string
     );
   }
 
+  const scheduleLabel =
+    date || time
+      ? t.live.startsAt.replace("{when}", `${date}${time ? ` ${time}` : ""}`.trim())
+      : "";
+
   return (
     <div className="live-page">
       <div className="live-toolbar">
@@ -112,6 +183,7 @@ export default function MeetupLiveClient({ meetupId, title }: { meetupId: string
           ))}
         </div>
       </div>
+      {scheduleLabel && <div className="live-schedule-banner">{scheduleLabel}</div>}
       <div className="live-external-links">
         {session.videoUrl && (
           <a href={session.videoUrl} target="_blank" rel="noopener noreferrer" className="btn btn-sm btn-primary">
diff --git a/frontend/src/components/Navbar.tsx b/frontend/src/components/Navbar.tsx
index edd83f9..aa48839 100644
--- a/frontend/src/components/Navbar.tsx
+++ b/frontend/src/components/Navbar.tsx
@@ -20,15 +20,21 @@ export default function Navbar() {
   const [openGroup, setOpenGroup] = useState<string | null>(null);
   const [active, setActive] = useState("");
   const [unread, setUnread] = useState(0);
+  const [chatUnread, setChatUnread] = useState(0);
   const navRef = useRef<HTMLElement>(null);
 
   useEffect(() => {
     if (!token) {
       setUnread(0);
+      setChatUnread(0);
       return;
     }
     const refresh = () => {
       api.getNotificationUnread(token).then((r) => setUnread(r.count)).catch(() => setUnread(0));
+      api
+        .getConversations(token)
+        .then((list) => setChatUnread(list.reduce((s, c) => s + (c.unreadCount || 0), 0)))
+        .catch(() => setChatUnread(0));
     };
     refresh();
     const id = window.setInterval(refresh, 60000);
@@ -235,7 +241,7 @@ export default function Navbar() {
           </button>
           {user ? (
             <Link href="/chat" className="nav-notify" aria-label={t.nav.chat}>
-              ✉️
+              ✉️{chatUnread > 0 && <em className="nav-notify-badge">{chatUnread}</em>}
             </Link>
           ) : (
             <Link
diff --git a/frontend/src/lib/i18n/dictionaries.ts b/frontend/src/lib/i18n/dictionaries.ts
index cdccac6..e869f7f 100644
--- a/frontend/src/lib/i18n/dictionaries.ts
+++ b/frontend/src/lib/i18n/dictionaries.ts
@@ -509,7 +509,10 @@ export const zh = {
   },
   live: {
     loading: "加载直播间…",
-    loginRequired: "登录并报名后可进入直播",
+    loginRequired: "登录后可进入直播",
+    rsvpRequired: "报名后即可进入直播间",
+    rsvpJoin: "报名并进入",
+    startsAt: "活动时间：{when} · 到点后房间会更热闹",
     vipRequired: "VIP 会员可进入此活动直播",
     back: "返回活动",
     unavailable: "无法打开直播间",
@@ -1787,7 +1790,10 @@ export const en: { [K in keyof typeof zh]: typeof zh[K] extends string ? string
   },
   live: {
     loading: "Loading live room…",
-    loginRequired: "Sign in and RSVP to join the live room",
+    loginRequired: "Sign in to join the live room",
+    rsvpRequired: "RSVP to enter the live room",
+    rsvpJoin: "RSVP and join",
+    startsAt: "Starts {when} · the room fills closer to start",
     vipRequired: "VIP required for this live event",
     back: "Back to events",
     unavailable: "Can't open live room",