diff --git a/assets/css/style.css b/assets/css/style.css
index 1bf04c9..6e9162d 100644
--- a/assets/css/style.css
+++ b/assets/css/style.css
@@ -1352,11 +1352,6 @@ section {
     mask: url('../images/icon/balloon.svg') center / contain no-repeat;
 }
 
-@media (prefers-reduced-motion: no-preference) {
-    .fa-before-lead.fa-before-lead--balloon::before {
-        animation: ebook-balloon-float 2.4s ease-in-out infinite;
-    }
-}
 
 /* 金句：基底只放結構：視覺請用 --mission / --awakening，兩句互不覆寫 */
 .slogan-quote {
@@ -1559,47 +1554,6 @@ a {
     background: #fffdf5;
     color: #e0b400;
     z-index: 2;
-    box-shadow: 0 0 0 0 rgba(255, 204, 0, 0.35);
-}
-
-@media (prefers-reduced-motion: no-preference) {
-    .merged-storyline .story-node::before {
-        animation:
-            timeline-diamond-enter 0.65s cubic-bezier(0.22, 1, 0.36, 1) backwards,
-            timeline-diamond-glow 2.1s ease-in-out 0.65s infinite;
-    }
-
-    .merged-storyline .story-node:nth-of-type(1)::before {
-        animation-delay: 0.05s, 0.7s;
-    }
-
-    .merged-storyline .story-node:nth-of-type(2)::before {
-        animation-delay: 0.12s, 0.9s;
-    }
-
-    .merged-storyline .story-node:nth-of-type(3)::before {
-        animation-delay: 0.19s, 1.1s;
-    }
-
-    .merged-storyline .story-node:nth-of-type(4)::before {
-        animation-delay: 0.26s, 1.3s;
-    }
-
-    .merged-storyline .story-node:nth-of-type(5)::before {
-        animation-delay: 0.33s, 1.5s;
-    }
-
-    .merged-storyline .story-node:nth-of-type(6)::before {
-        animation-delay: 0.4s, 1.7s;
-    }
-
-    .merged-storyline .story-node:nth-of-type(7)::before {
-        animation-delay: 0.47s, 1.9s;
-    }
-
-    .merged-storyline .story-node:nth-of-type(8)::before {
-        animation-delay: 0.54s, 2.1s;
-    }
 }
 
 .merged-storyline .story-node::after {
@@ -1752,8 +1706,15 @@ a {
 }
 
 .merged-storyline .timeline-ebook-cta .fa-hand-pointer {
+    display: inline-block;
     font-size: 1.1em;
-    animation: timeline-finger-nudge 1.15s ease-in-out infinite;
+    flex-shrink: 0;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+    .merged-storyline .timeline-ebook-cta .fa-hand-pointer {
+        animation: timeline-finger-nudge 1.15s ease-in-out infinite;
+    }
 }
 
 @keyframes timeline-finger-nudge {
@@ -1768,57 +1729,31 @@ a {
     }
 }
 
-@keyframes timeline-diamond-enter {
-    0% {
-        opacity: 0;
-        transform: scale(0.45);
-        box-shadow: 0 0 0 0 rgba(255, 204, 0, 0);
-        color: #c9a000;
-    }
-
-    70% {
-        transform: scale(1.18);
-        box-shadow:
-            0 0 0 3px rgba(255, 204, 0, 0.55),
-            0 0 16px 4px rgba(255, 204, 0, 0.45);
-        color: #ffdd33;
-    }
-
-    100% {
-        opacity: 1;
-        transform: scale(1);
-        box-shadow: 0 0 0 0 rgba(255, 204, 0, 0.35);
-        color: #e0b400;
-    }
-}
-
-@keyframes timeline-diamond-glow {
+/* 頂／底邊（水平）佔較長 keyframe 比例，整圈放慢 */
+@keyframes ebook-balloon-orbit {
 
     0%,
     100% {
-        transform: scale(1);
-        box-shadow: 0 0 0 0 rgba(255, 204, 0, 0.3);
-        color: #e0b400;
+        left: 0;
+        top: 0;
     }
 
-    50% {
-        transform: scale(1.14);
-        box-shadow:
-            0 0 0 3px rgba(255, 204, 0, 0.5),
-            0 0 14px 5px rgba(255, 204, 0, 0.55);
-        color: #ffea4d;
-    }
-}
-
-@keyframes ebook-balloon-float {
-
-    0%,
-    100% {
-        transform: translateY(0);
+  /* 上邊：左上 → 右上 */
+    36% {
+        left: calc(100% - 1.15em);
+        top: 0;
     }
 
-    50% {
-        transform: translateY(-5px);
+  /* 右邊：右上 → 右下 */
+    46% {
+        left: calc(100% - 1.15em);
+        top: calc(100% - 1.15em);
+    }
+
+  /* 下邊：右下 → 左下 */
+    86% {
+        left: 0;
+        top: calc(100% - 1.15em);
     }
 }
 
@@ -1827,9 +1762,10 @@ a {
         animation: none;
     }
 
-    .merged-storyline .story-node::before,
-    .fa-before-lead.fa-before-lead--balloon::before {
+    body.ebook-ssg2-page .ebook-intro-notes.fa-before-lead--balloon::before {
         animation: none;
+        left: 0;
+        top: 0;
     }
 }
 
@@ -2811,9 +2747,33 @@ body.ebook-ssg2-page .ebook-intro.section p.ebook-intro-lead + p.ebook-intro-not
     margin-top: -0.5rem;
 }
 
-body.ebook-ssg2-page .ebook-intro-notes {
-    max-width: 42rem;
+/* 電子書叮嚀（ebook.html）：區塊貼合文字；氣球沿外圈留白四角走，不壓字 */
+body.ebook-ssg2-page .ebook-intro-notes.fa-before-lead.fa-before-lead--balloon {
+    position: relative;
+    display: block;
+    box-sizing: border-box;
+    width: fit-content;
+    max-width: min(36rem, calc(100% - 2rem));
     margin: 0 auto 1rem;
+    padding: 1.2em calc(0.55em + 10px);
+    padding-left: calc(0.55em + 10px);
+    text-align: center;
+}
+
+body.ebook-ssg2-page .ebook-intro-notes.fa-before-lead--balloon::before {
+    left: 0;
+    top: 0;
+    transform: none;
+    width: 1.15em;
+    height: 1.15em;
+    z-index: 0;
+    pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+    body.ebook-ssg2-page .ebook-intro-notes.fa-before-lead--balloon::before {
+        animation: ebook-balloon-orbit 11s linear infinite;
+    }
 }
 
 body.ebook-ssg2-page .ebook-intro-notes .ebook-intro-note {
@@ -2821,6 +2781,10 @@ body.ebook-ssg2-page .ebook-intro-notes .ebook-intro-note {
     font-size: 0.88rem;
     color: #777;
     line-height: 1.5;
+    text-align: center;
+    text-wrap: balance;
+    position: relative;
+    z-index: 1;
 }
 
 body.ebook-ssg2-page .ebook-intro-notes .ebook-intro-note+.ebook-intro-note {