diff --git a/src/renderer/features/lyrics/karaoke-lyric-line.module.css b/src/renderer/features/lyrics/karaoke-lyric-line.module.css
index 96969aa51..bd3d6c725 100644
--- a/src/renderer/features/lyrics/karaoke-lyric-line.module.css
+++ b/src/renderer/features/lyrics/karaoke-lyric-line.module.css
@@ -10,10 +10,7 @@
     opacity: var(--lyric-opacity);
     transform: scale(var(--lyric-scale));
     transform-origin: var(--lyric-scale-origin) center;
-    transition:
-        filter calc(var(--karaoke-line-duration, 1s) / 3) 0.4s,
-        opacity calc(var(--karaoke-line-duration, 1s) / 2) 0.166s,
-        transform 0.166s var(--karaoke-anim-delay, 0s);
+    transition: transform 0.166s var(--karaoke-anim-delay, 0s);
     will-change: transform;
 }
 
@@ -21,7 +18,6 @@
 .karaoke-line:global(.lyrics-line-animating),
 .karaoke-line:global(.lyrics-line-pre-animating) {
     opacity: 1 !important;
-    filter: blur(0);
     transform: scale(1);
 }
 
diff --git a/src/renderer/features/lyrics/lyric-line.module.css b/src/renderer/features/lyrics/lyric-line.module.css
index 450ada65a..328ac7499 100644
--- a/src/renderer/features/lyrics/lyric-line.module.css
+++ b/src/renderer/features/lyrics/lyric-line.module.css
@@ -7,10 +7,7 @@
     opacity: var(--lyric-opacity);
     transform: scale(var(--lyric-scale));
     transform-origin: var(--lyric-scale-origin) center;
-    transition:
-        filter calc(var(--karaoke-line-duration, 1s) / 3) 0.4s,
-        opacity calc(var(--karaoke-line-duration, 1s) / 2) 0.166s,
-        transform 0.166s var(--karaoke-anim-delay, 0s);
+    transition: transform 0.166s var(--karaoke-anim-delay, 0s);
     will-change: transform;
 }
 
@@ -19,7 +16,6 @@
 .lyric-line:global(.lyrics-line-pre-animating),
 .lyric-line:global(.active) {
     opacity: 1 !important;
-    filter: blur(0);
     transform: scale(1);
 }
 
diff --git a/src/renderer/features/lyrics/styles/karaoke-animation.css b/src/renderer/features/lyrics/styles/karaoke-animation.css
index e16681d1f..cb8f3fa71 100644
--- a/src/renderer/features/lyrics/styles/karaoke-animation.css
+++ b/src/renderer/features/lyrics/styles/karaoke-animation.css
@@ -11,36 +11,32 @@
     initial-value: 0;
 }
 
-/* Container-level line context blur/fade (karaoke sync only) */
+/* Past (sung) lines stay fully visible */
 .synchronized-karaoke-lyrics:has(.lyrics-line-active)
     :is(.karaoke-line, .lyric-line):not(
         .lyrics-line-active,
         .lyrics-line-active ~ :is(.karaoke-line, .lyric-line)
     ) {
-    opacity: var(--lyric-opacity, 0.3);
-    filter: blur(2.5px);
+    opacity: 1;
+    filter: none;
 }
 
 .synchronized-karaoke-lyrics :is(.karaoke-line, .lyric-line).lyrics-line-active {
     opacity: 1 !important;
-    filter: blur(0);
 }
 
 .synchronized-karaoke-lyrics:has(.lyrics-line-active)
     :is(.karaoke-line, .lyric-line).lyrics-line-active
     ~ :is(.karaoke-line, .lyric-line) {
     opacity: var(--lyric-opacity, 0.3);
-    filter: blur(0);
 }
 
 .synchronized-karaoke-lyrics :is(.karaoke-line, .lyric-line).lyrics-line-animating {
     opacity: 1 !important;
-    filter: blur(0) !important;
 }
 
 .synchronized-karaoke-lyrics :is(.karaoke-line, .lyric-line):hover {
     opacity: 1 !important;
-    filter: blur(0) !important;
 }
 
 /* Word highlight via stacked text twin + gradient swipe */
@@ -148,7 +144,11 @@
 }
 
 .karaoke-word.sung .karaoke-word-highlight {
-    opacity: 0;
+    opacity: 1;
+    transition: none;
+
+    --lyric-transition-amount-start: 1.4;
+    --lyric-transition-amount-end: 1.5;
 }
 
 .karaoke-word ruby {
diff --git a/src/renderer/features/lyrics/styles/synchronized-lyrics-animation.css b/src/renderer/features/lyrics/styles/synchronized-lyrics-animation.css
index f0e70ed55..09857a2f7 100644
--- a/src/renderer/features/lyrics/styles/synchronized-lyrics-animation.css
+++ b/src/renderer/features/lyrics/styles/synchronized-lyrics-animation.css
@@ -1,33 +1,22 @@
-/* Container-level line context blur/fade (line-sync only) */
-.synchronized-lyrics .lyric-line {
-    transition:
-        filter 0.2s ease,
-        opacity 0.2s ease,
-        transform 0.2s ease;
-}
-
+/* Past (sung) lines stay fully visible */
 .synchronized-lyrics:has(.lyrics-line-active)
     .lyric-line:not(.lyrics-line-active, .lyrics-line-active ~ .lyric-line) {
-    opacity: var(--lyric-opacity, 0.3);
-    filter: blur(2.5px);
+    opacity: 1;
+    filter: none;
 }
 
 .synchronized-lyrics .lyric-line.lyrics-line-active {
     opacity: 1 !important;
-    filter: blur(0);
 }
 
 .synchronized-lyrics:has(.lyrics-line-active) .lyric-line.lyrics-line-active ~ .lyric-line {
     opacity: var(--lyric-opacity, 0.3);
-    filter: blur(0);
 }
 
 .synchronized-lyrics .lyric-line.lyrics-line-animating {
     opacity: 1 !important;
-    filter: blur(0) !important;
 }
 
 .synchronized-lyrics .lyric-line:hover {
     opacity: 1 !important;
-    filter: blur(0) !important;
 }