Add HLL Vietnam release countdown

frontend/assets/css/styles.css

@@ -615,6 +615,76 @@ h2 {
   border-radius: 10px;
 }
 
+.release-countdown {
+  margin-top: 18px;
+  display: grid;
+  grid-template-columns: minmax(0, 0.85fr) minmax(360px, 1.15fr);
+  align-items: center;
+  gap: 18px;
+  padding: 18px;
+  border: 1px solid rgba(210, 182, 118, 0.24);
+  border-radius: 18px;
+  background:
+    linear-gradient(180deg, rgba(31, 35, 24, 0.92), rgba(12, 15, 11, 0.98)),
+    repeating-linear-gradient(
+      -32deg,
+      rgba(183, 201, 125, 0.035) 0 1px,
+      transparent 1px 18px
+    );
+}
+
+.release-countdown__copy {
+  min-width: 0;
+}
+
+.release-countdown__copy h3 {
+  margin: 0;
+  font-size: clamp(1.15rem, 1.8vw, 1.55rem);
+  line-height: 1.2;
+}
+
+.release-countdown__units {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 10px;
+}
+
+.release-countdown__units article {
+  min-width: 0;
+  padding: 12px 10px;
+  border: 1px solid rgba(159, 168, 141, 0.18);
+  border-radius: 12px;
+  background: rgba(8, 10, 7, 0.58);
+  text-align: center;
+}
+
+.release-countdown__units strong,
+.release-countdown__units span {
+  display: block;
+}
+
+.release-countdown__units strong {
+  color: var(--accent-warm);
+  font-size: clamp(1.55rem, 3.1vw, 2.4rem);
+  line-height: 1;
+}
+
+.release-countdown__units span {
+  margin-top: 6px;
+  color: var(--muted);
+  font-size: 0.68rem;
+  font-weight: 800;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+}
+
+.release-countdown__status {
+  grid-column: 1 / -1;
+  margin: -4px 0 0;
+  color: var(--text-soft);
+  font-size: 0.86rem;
+}
+
 .servers-grid {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(min(100%, 360px), 1fr));
@@ -1645,6 +1715,14 @@ h2 {
     grid-template-columns: 1fr;
   }
 
+  .release-countdown {
+    grid-template-columns: 1fr;
+  }
+
+  .release-countdown__units {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
   .stats-comparison-card__grid {
     grid-template-columns: 1fr;
   }