fix(epub): improve image display and caption alignment

- Remove box-shadow and border-radius from images to eliminate unwanted backgrounds
- Set explicit transparent background for images and figures
- Remove duplicate image styling blocks for cleaner CSS
- Change figcaption alignment from center to left for better readability
- Add border and outline none to prevent inherited styling issues
- Consolidate image styling into single Enhanced Figure section

quarto/assets/styles/epub.css

@@ -234,19 +234,12 @@ figure {
     page-break-inside: avoid;
 }
 
-img {
-    max-width: 100%;
-    height: auto;
-    display: block;
-    margin-left: auto;
-    margin-right: auto;
-    border-radius: 4px; /* Subtle rounding for images */
-}
+/* Image styling moved to Enhanced Figure and Image Styling section */
 
 figcaption {
     font-size: 0.9em;
     font-style: italic;
-    text-align: center;
+    text-align: left;
     margin-top: 0.8em;
     color: #6c757d; /* Softer gray for captions */
 }
@@ -338,6 +331,98 @@ table caption,
     display: none !important;
 }
 
+/* ==========================================================================
+   EPUB Title Page Styling
+   ========================================================================== */
+
+/* Title page container */
+section[epub|type="titlepage"],
+.titlepage,
+#titlepage {
+    text-align: center;
+    padding: 2rem 1rem;
+    page-break-after: always;
+    min-height: 80vh;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+}
+
+/* Main title styling */
+h1[epub|type="title"],
+.title-page h1,
+#titlepage h1 {
+    font-size: 2.5em;
+    font-weight: 700;
+    color: var(--crimson);
+    margin-bottom: 0.5rem;
+    line-height: 1.2;
+    text-align: center;
+    border: none;
+    padding: 0;
+}
+
+/* Subtitle styling */
+h2[epub|type="subtitle"],
+.title-page h2,
+#titlepage h2 {
+    font-size: 1.4em;
+    font-weight: 400;
+    color: var(--text-secondary);
+    margin-bottom: 2rem;
+    font-style: italic;
+    line-height: 1.3;
+    text-align: center;
+    border: none;
+    padding: 0;
+}
+
+/* Author information styling */
+p[epub|type="author"],
+.title-page .author,
+#titlepage .author,
+.title-page p:has-text("Prof."),
+#titlepage p:contains("Prof.") {
+    font-size: 1.2em;
+    font-weight: 500;
+    color: var(--text-primary);
+    margin: 1.5rem 0;
+    text-align: center;
+}
+
+/* Publisher and affiliation styling */
+.title-page .publisher,
+.title-page .affiliation,
+#titlepage .publisher,
+#titlepage .affiliation {
+    font-size: 1em;
+    color: var(--text-secondary);
+    margin: 0.5rem 0;
+    text-align: center;
+}
+
+/* Date styling on title page */
+.title-page .date,
+#titlepage .date {
+    font-size: 0.9em;
+    color: var(--text-muted);
+    margin-top: 2rem;
+    text-align: center;
+}
+
+/* Copyright and rights information */
+.title-page .rights,
+.title-page .copyright,
+#titlepage .rights,
+#titlepage .copyright {
+    font-size: 0.8em;
+    color: var(--text-muted);
+    margin-top: auto;
+    text-align: center;
+    padding-top: 2rem;
+}
+
 /* ==========================================================================
    Callouts and Special Elements
    ========================================================================== */
@@ -408,6 +493,7 @@ figure {
     padding: 0;
     page-break-inside: avoid;
     text-align: center;
+    background: transparent;
 }
 
 img {
@@ -416,14 +502,15 @@ img {
     display: block;
     margin-left: auto;
     margin-right: auto;
-    border-radius: 6px;
-    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
+    background: transparent;
+    border: none;
+    outline: none;
 }
 
 figcaption {
     font-size: 0.9rem;
     font-style: italic;
-    text-align: center;
+    text-align: left;
     margin-top: 1rem;
     color: var(--text-muted);
     line-height: 1.4;