diff --git a/src/Jiaowu.Api/Controllers/VenueDisplayAnnouncementsController.cs b/src/Jiaowu.Api/Controllers/VenueDisplayAnnouncementsController.cs
index 1ae6262..6ff77e7 100644
--- a/src/Jiaowu.Api/Controllers/VenueDisplayAnnouncementsController.cs
+++ b/src/Jiaowu.Api/Controllers/VenueDisplayAnnouncementsController.cs
@@ -92,13 +92,13 @@ public sealed class VenueDisplayAnnouncementsController(AppDbContext db) : Contr
 }
 
 public sealed record UpsertVenueDisplayAnnouncementRequest(
-    [property: Required, StringLength(120)] string Title,
-    [property: Required, StringLength(1000)] string Content,
+    [param: Required, StringLength(120)] string Title,
+    [param: Required, StringLength(1000)] string Content,
     VenueDisplayAnnouncementScope Scope,
     Guid? TargetId,
     bool IsPublished,
     bool IsPinned,
     bool IsUrgent,
-    [property: Range(0, 100)] int Priority,
+    [param: Range(0, 100)] int Priority,
     DateTime? StartsAt,
     DateTime? EndsAt);
diff --git a/web/src/views/VenueDisplayView.vue b/web/src/views/VenueDisplayView.vue
index 1bdeed8..073b12f 100644
--- a/web/src/views/VenueDisplayView.vue
+++ b/web/src/views/VenueDisplayView.vue
@@ -76,5 +76,5 @@ onBeforeUnmount(() => { window.clearInterval(clockTimer); window.clearTimeout(re
 
 <style scoped>
 .venue-display{--ink:#f0faf8;--muted:#adc4ca;--line:rgb(159 223 210 / .25);--accent:#65d7ba;min-height:100dvh;box-sizing:border-box;padding:clamp(18px,3.4vw,54px);display:flex;flex-direction:column;gap:clamp(18px,2.4vh,30px);overflow:hidden;background:radial-gradient(circle at 80% 0%,#1d5865 0%,transparent 32%),#0a1c29;color:var(--ink);font-family:"Microsoft YaHei",sans-serif}.display-header{display:grid;grid-template-columns:minmax(280px,1fr) auto auto auto auto;align-items:center;gap:clamp(16px,2vw,34px);padding-bottom:clamp(16px,2vh,26px);border-bottom:1px solid var(--line)}.identity>span,.now-playing>span{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.15em}.identity h1{font-size:clamp(30px,4.5vw,62px);line-height:1.1;margin:8px 0}.identity p{margin:0;color:var(--muted)}.now-playing{padding-left:20px;border-left:2px solid var(--accent);min-width:130px}.now-playing b,.now-playing small{display:block}.now-playing b{margin:7px 0;font-size:clamp(16px,1.8vw,25px)}.now-playing small,.repair-code small,time small{color:var(--muted)}.repair-code{display:flex;align-items:center;gap:10px;padding:8px 12px;border:0;background:#effdf9;color:#102a3a;text-align:left;cursor:zoom-in}.repair-code img{width:72px;height:72px}.repair-code b,.repair-code small{display:block}.repair-code small{color:#50707a;font-size:12px;margin-top:4px}time{font:clamp(25px,3.3vw,48px) ui-monospace,monospace;text-align:right;color:var(--accent);white-space:nowrap}time small{display:block;font:12px "Microsoft YaHei";margin-top:5px}.fullscreen-button{border:1px solid var(--line);background:transparent;color:var(--ink);padding:9px 12px;cursor:pointer}.display-board{flex:1;min-height:0}.venue-classroom .display-board{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:minmax(145px,1fr);gap:14px}.course-card{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center;padding:22px;background:linear-gradient(110deg,#123443,#163d4c);border-left:5px solid var(--accent);min-width:0}.course-card.current{box-shadow:inset 0 0 0 1px var(--accent);background:#164756}.course-card.reservation{border-color:#f5a524;background:#3b3020}.period{font:700 clamp(34px,4vw,60px) ui-monospace,monospace;color:var(--accent);line-height:.8}.period small{display:block;font:12px "Microsoft YaHei";color:var(--muted);margin-top:9px;white-space:nowrap}.course-card.reservation .period{color:#ffd07b}.course-card h2{font-size:clamp(21px,2.6vw,38px);line-height:1.15;margin:0 0 12px;word-break:break-word}.course-card p{margin:0;color:var(--muted);font-size:clamp(14px,1.5vw,20px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-card i{display:inline-block;width:4px;height:4px;border-radius:50%;background:var(--accent);vertical-align:middle;margin:0 10px}.reservation-label{display:inline-block;margin-bottom:8px;color:#ffd07b;font-size:12px}.empty{grid-column:1/-1;display:grid;place-content:center;text-align:center;background:#102d3b;color:var(--accent);font-size:clamp(28px,4vw,54px)}.empty small{display:block;margin-top:16px;color:var(--muted);font-size:16px}.venue-building .display-board{overflow:hidden}.room-head,.room-row{display:grid;grid-template-columns:minmax(150px,2fr) repeat(12,minmax(54px,1fr));gap:4px;min-width:900px}.room-head{padding-bottom:6px;color:var(--muted);text-align:center}.room-head span small{display:block;font-size:10px}.room-row{margin-top:5px}.room-row>b,.room-row>span{display:grid;place-items:center;padding:12px 7px;background:#213f4b;text-align:center}.room-row>span.free{background:#1b6d5d;color:#fff;font-weight:700}footer{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--muted)}footer span{width:7px;height:7px;border-radius:99px;background:#42616d}footer span.active{width:24px;background:var(--accent)}footer b{font:12px ui-monospace,monospace;margin-left:5px}footer button{border:0;background:#244856;color:#fff;width:28px;height:28px;border-radius:50%;font-size:22px;cursor:pointer}footer small{margin-left:10px;font-size:12px}.qr-overlay{position:fixed;inset:0;z-index:20;display:grid;place-items:center;background:rgb(2 14 22 / .9);cursor:zoom-out}.qr-overlay>div{display:grid;justify-items:center;gap:14px;padding:clamp(24px,5vw,54px);background:#f5fffc;color:#102a3a;box-shadow:0 24px 80px #0008}.qr-overlay img{width:min(62vw,560px);height:auto;image-rendering:pixelated}.qr-overlay b{font-size:clamp(24px,3vw,38px)}.qr-overlay span{color:#50707a}.qr-overlay>button{position:absolute;right:clamp(18px,4vw,46px);top:clamp(18px,4vw,36px);border:1px solid #ffffff66;background:transparent;color:#fff;width:42px;height:42px;font-size:30px;cursor:pointer}@media(max-width:1060px){.display-header{grid-template-columns:1fr auto auto auto}.now-playing{display:none}.venue-classroom .display-board{grid-template-columns:1fr}.repair-code img{width:64px;height:64px}}@media(max-width:680px){.venue-display{padding:18px;overflow:auto}.display-header{grid-template-columns:1fr auto;gap:12px}.repair-code{grid-row:2;grid-column:1/-1}.identity h1{font-size:32px}.identity p{font-size:13px}.fullscreen-button{display:none}.venue-classroom .display-board{grid-auto-rows:minmax(135px,auto)}.course-card{padding:18px}.course-card h2{font-size:24px}footer small{display:none}.qr-overlay img{width:min(82vw,440px)}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
-.announcement-ticker{display:flex;align-items:center;gap:16px;min-height:52px;padding:0 18px;border-left:4px solid #65d7ba;background:#123443;overflow:hidden}.announcement-ticker>b{flex:none;color:#65d7ba;font-size:14px;letter-spacing:.14em}.ticker-window{min-width:0;overflow:hidden}.ticker-track{display:flex;width:max-content;animation:ticker-scroll 42s linear infinite}.ticker-track span{display:inline-flex;align-items:center;gap:10px;padding-right:72px;white-space:nowrap;color:#e7f6f4}.ticker-track strong{font-weight:700}.ticker-track i{font-style:normal;color:#65d7ba}.ticker-track em{padding:3px 6px;background:#d9504a;color:#fff;font-size:11px;font-style:normal;font-weight:700}@keyframes ticker-scroll{to{transform:translateX(-50%)}}@media(prefers-reduced-motion:reduce){.ticker-track{animation:none}}
+.announcement-ticker{display:flex;align-items:center;gap:16px;min-height:52px;padding:0 18px;border-left:4px solid #65d7ba;background:#123443;overflow:hidden}.announcement-ticker>b{flex:none;color:#65d7ba;font-size:14px;letter-spacing:.14em}.ticker-window{flex:1 1 auto;width:0;min-width:0;overflow:hidden}.ticker-track{display:flex;width:max-content;animation:ticker-scroll 42s linear infinite}.ticker-track span{display:inline-flex;align-items:center;gap:10px;padding-right:72px;white-space:nowrap;color:#e7f6f4}.ticker-track strong{font-weight:700}.ticker-track i{font-style:normal;color:#65d7ba}.ticker-track em{padding:3px 6px;background:#d9504a;color:#fff;font-size:11px;font-style:normal;font-weight:700}@keyframes ticker-scroll{to{transform:translateX(-50%)}}@media(prefers-reduced-motion:reduce){.ticker-track{animation:none}}
 </style>