diff --git a/index.html b/index.html
index 6d4000f..797f187 100644
--- a/index.html
+++ b/index.html
@@ -36,12 +36,14 @@
     <audio id="ambient-sound" src="ambient.mp3" loop></audio>
   </div>
 
-  <div id="overview-indicator">
+  <div id="scanlines" aria-hidden="true"></div>
+
+  <div id="overview-indicator" class="holo-panel">
     <span>MAP VIEW</span>
     <span class="overview-hint">[Tab] to exit</span>
   </div>
 
-  <div id="photo-indicator">
+  <div id="photo-indicator" class="holo-panel">
     <span>PHOTO MODE</span>
     <span class="photo-hint">[P] exit &nbsp;|&nbsp; [[] focus- &nbsp; []] focus+ &nbsp; focus: <span id="photo-focus">5.0</span></span>
   </div>
diff --git a/style.css b/style.css
index 92029bb..bdc4327 100644
--- a/style.css
+++ b/style.css
@@ -150,3 +150,59 @@ body.photo-mode #overview-indicator {
 #photo-focus {
   color: var(--color-primary);
 }
+
+/* === SCAN LINES === */
+#scanlines {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  pointer-events: none;
+  z-index: 5;
+  background: repeating-linear-gradient(
+    to bottom,
+    transparent 0px,
+    transparent 3px,
+    rgba(68, 136, 255, 0.03) 3px,
+    rgba(68, 136, 255, 0.03) 4px
+  );
+  animation: scanlines-drift 10s linear infinite;
+}
+
+@keyframes scanlines-drift {
+  0%   { background-position: 0 0; }
+  100% { background-position: 0 64px; }
+}
+
+/* Holo panel sweep — a bright line scrolls across each panel */
+.holo-panel {
+  position: relative;
+  overflow: hidden;
+}
+
+.holo-panel::after {
+  content: '';
+  position: absolute;
+  left: 0;
+  top: -40%;
+  width: 100%;
+  height: 40%;
+  background: linear-gradient(
+    to bottom,
+    transparent 0%,
+    rgba(68, 136, 255, 0.14) 45%,
+    rgba(68, 136, 255, 0.22) 50%,
+    rgba(68, 136, 255, 0.14) 55%,
+    transparent 100%
+  );
+  animation: holo-sweep 4s ease-in-out infinite;
+  pointer-events: none;
+}
+
+@keyframes holo-sweep {
+  0%   { top: -40%; opacity: 0; }
+  10%  { opacity: 1; }
+  90%  { opacity: 1; }
+  100% { top: 100%; opacity: 0; }
+}