diff --git a/assets/css/style.css b/assets/css/style.css
index e039cc0..6985318 100644
--- a/assets/css/style.css
+++ b/assets/css/style.css
@@ -2982,6 +2982,50 @@ body.totoga2-page .ebook-back-link {
     gap: 12px;
 }
 
+/* totoga2 黃色氣球底圖：標題加遮罩與描邊光暈，僅本系列有 .map-archive-header */
+body.totoga2-page header.map-archive-header::before {
+    content: "";
+    position: absolute;
+    inset: 0;
+    background: linear-gradient(
+        180deg,
+        rgba(18, 14, 8, 0.52) 0%,
+        rgba(18, 14, 8, 0.38) 45%,
+        rgba(18, 14, 8, 0.5) 100%
+    );
+    z-index: 0;
+    pointer-events: none;
+}
+
+body.totoga2-page header.map-archive-header .site-header-inner {
+    position: relative;
+    z-index: 1;
+}
+
+body.totoga2-page header.map-archive-header .main-title {
+    font-size: clamp(2.25rem, 5.2vw, 3.65rem);
+    color: #fff8e8;
+    letter-spacing: 0.12em;
+    text-shadow:
+        0 2px 4px rgba(0, 0, 0, 0.65),
+        0 0 28px rgba(0, 0, 0, 0.45),
+        0 0 2px rgba(255, 255, 255, 0.9);
+}
+
+body.totoga2-page header.map-archive-header .sub-title {
+    font-size: clamp(0.95rem, 2.2vw, 1.08rem);
+    font-weight: 700;
+    color: #f5ecd4;
+    letter-spacing: 0.28em;
+    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.55);
+}
+
+body.totoga2-page header.map-archive-header .subtitle-wrap::before,
+body.totoga2-page header.map-archive-header .subtitle-wrap::after {
+    background-color: rgba(245, 236, 212, 0.85);
+    max-width: 72px;
+}
+
 /* totoga2/* 子頁共用 .totoga2-split-crossnav */
 body.totoga2-page .totoga2-split-crossnav {
     margin-top: 0.75rem;