diff --git a/assets/css/style.css b/assets/css/style.css
index f3a992d..4bdeb0f 100644
--- a/assets/css/style.css
+++ b/assets/css/style.css
@@ -2676,9 +2676,30 @@ body.site-guide-page .site-guide-mini-table thead th {
     color: #4a3a10;
 }
 
-body.site-guide-page .site-guide-nav-table tbody tr:nth-child(even),
+/* 主選單樹：依層級上色（取代斑馬紋，避免與巢狀結構脫節） */
+body.site-guide-page .site-guide-nav-table tbody tr[data-site-guide-depth="1"] td {
+    background: rgba(255, 220, 150, 0.42);
+}
+
+body.site-guide-page .site-guide-nav-table tbody tr[data-site-guide-depth="2"] td {
+    background: rgba(255, 238, 200, 0.48);
+}
+
+body.site-guide-page .site-guide-nav-table tbody tr[data-site-guide-depth="3"] td {
+    background: rgba(255, 250, 242, 0.96);
+}
+
+body.site-guide-page .site-guide-nav-table tbody tr[data-site-guide-depth="4"] td {
+    background: rgba(245, 248, 255, 0.92);
+}
+
+/* 小表：整區一致淡底，不靠奇偶列 */
+body.site-guide-page .site-guide-mini-table tbody tr {
+    background: rgba(255, 252, 244, 0.72);
+}
+
 body.site-guide-page .site-guide-mini-table tbody tr:nth-child(even) {
-    background: rgba(255, 250, 235, 0.45);
+    background: rgba(255, 252, 244, 0.72);
 }
 
 body.site-guide-page .site-guide-nav-table td.site-guide-nav-desc {
diff --git a/extra/site-guide.html b/extra/site-guide.html
index d21be27..fa73162 100644
--- a/extra/site-guide.html
+++ b/extra/site-guide.html
@@ -83,7 +83,7 @@
 
     <main class="content-container site-guide-main">
         <p class="site-guide-lead site-guide-lead--short">
-            棕字可點、灰字無連結。本頁頂欄全開；他頁依 <code>portal-nav.js</code>。
+            棕字可點、灰字無連結。主選單樹列底色依層級（1→4）區分。本頁頂欄全開且為同分頁開啟；他頁頂欄仍依 <code>portal-nav.js</code> 另開新分頁。
         </p>
 
         <section class="site-guide-group site-guide-group--nav-hero" aria-labelledby="sg-nav-tree">
@@ -114,8 +114,28 @@
                             <td class="site-guide-nav-link-cell"><a href="../index.html"><code>index.html</code></a></td>
                         </tr>
                         <tr data-site-guide-depth="2">
-                            <td class="site-guide-nav-menu-cell"><span class="site-guide-nav-name"><a href="totoga2.html">傳奇的轉折</a></span></td>
-                            <td class="site-guide-nav-desc">六六歌2 紀實長頁：影片、電子書、長文與章節錨點。</td>
+                            <td class="site-guide-nav-menu-cell"><span class="site-guide-nav-name"><span class="site-guide-nav-nolink">傳奇的轉折（六六歌2）</span></span></td>
+                            <td class="site-guide-nav-desc">四種入口：影片、電子書、時間軸為獨立單頁；網頁版為 TOTOGA2 整合長頁（章節錨點）。</td>
+                            <td class="site-guide-nav-link-cell"><span class="site-guide-nav-nolink">—</span></td>
+                        </tr>
+                        <tr data-site-guide-depth="3">
+                            <td class="site-guide-nav-menu-cell"><span class="site-guide-nav-name"><a href="totoga2-copy-video.html">影片</a></span></td>
+                            <td class="site-guide-nav-desc">無限挑戰 · 六六歌2 嵌入影片單頁。</td>
+                            <td class="site-guide-nav-link-cell"><a href="totoga2-copy-video.html"><code>extra/totoga2-copy-video.html</code></a></td>
+                        </tr>
+                        <tr data-site-guide-depth="3">
+                            <td class="site-guide-nav-menu-cell"><span class="site-guide-nav-name"><a href="totoga2-copy-ebook.html">電子書</a></span></td>
+                            <td class="site-guide-nav-desc">紀實電子書內容獨立成頁。</td>
+                            <td class="site-guide-nav-link-cell"><a href="totoga2-copy-ebook.html"><code>extra/totoga2-copy-ebook.html</code></a></td>
+                        </tr>
+                        <tr data-site-guide-depth="3">
+                            <td class="site-guide-nav-menu-cell"><span class="site-guide-nav-name"><a href="totoga2-copy-timeline.html">時間軸</a></span></td>
+                            <td class="site-guide-nav-desc">時間軸與紀實八章長文單頁。</td>
+                            <td class="site-guide-nav-link-cell"><a href="totoga2-copy-timeline.html"><code>extra/totoga2-copy-timeline.html</code></a></td>
+                        </tr>
+                        <tr data-site-guide-depth="3">
+                            <td class="site-guide-nav-menu-cell"><span class="site-guide-nav-name"><a href="totoga2.html">網頁版（TOTOGA2）</a></span></td>
+                            <td class="site-guide-nav-desc">單頁整合：影片／電子書／長文模式切換與八章錨點。</td>
                             <td class="site-guide-nav-link-cell"><a href="totoga2.html"><code>extra/totoga2.html</code></a></td>
                         </tr>
                         <tr data-site-guide-depth="2">
@@ -234,19 +254,33 @@
                             <td>區塊錨點（<code>#story</code> 不在頂欄白名單）</td>
                         </tr>
                         <tr>
-                            <td><a href="totoga2.html">totoga2.html</a></td>
-                            <td>六六歌2 整合</td>
+                            <td><a href="totoga2-copy-video.html">影片</a></td>
+                            <td>平行單頁 · <code>totoga2-copy-video.html</code></td>
+                        </tr>
+                        <tr>
+                            <td><a href="totoga2-copy-ebook.html">電子書</a></td>
+                            <td>平行單頁 · <code>totoga2-copy-ebook.html</code></td>
+                        </tr>
+                        <tr>
+                            <td><a href="totoga2-copy-timeline.html">時間軸</a></td>
+                            <td>平行單頁 · <code>totoga2-copy-timeline.html</code></td>
+                        </tr>
+                        <tr>
+                            <td><a href="totoga2.html">網頁版（TOTOGA2）</a></td>
+                            <td>整合長頁 · <code>totoga2.html</code></td>
                         </tr>
                     </tbody>
                 </table>
             </div>
             <div class="site-guide-grid site-guide-grid--compact">
                 <article class="site-guide-card site-guide-card--totoga2">
-                    <h3><a href="totoga2.html">totoga2 模式</a></h3>
+                    <h3><a href="totoga2.html">六六歌2 · 四入口</a></h3>
+                    <p class="site-guide-note">複本總覽：<a href="totoga2%20copy.html">totoga2 copy.html</a>。章節錨點僅在網頁版（TOTOGA2）內。</p>
                     <ul class="site-guide-inline-links">
-                        <li><a href="totoga2.html">影片</a></li>
-                        <li><a href="totoga2.html#ebook">電子書</a></li>
-                        <li><a href="totoga2.html#challenge">長文</a></li>
+                        <li><a href="totoga2-copy-video.html">影片</a></li>
+                        <li><a href="totoga2-copy-ebook.html">電子書</a></li>
+                        <li><a href="totoga2-copy-timeline.html">時間軸</a></li>
+                        <li><a href="totoga2.html">網頁版（TOTOGA2）</a></li>
                     </ul>
                     <nav class="site-guide-chapter-nav" aria-label="totoga2 章節">
                         <a href="totoga2.html#challenge">無限挑戰</a>
@@ -325,6 +359,10 @@
                             <th scope="row">視覺</th>
                             <td><a href="minister.html">minister.html</a></td>
                         </tr>
+                        <tr>
+                            <th scope="row">minister 長版</th>
+                            <td><a href="minister_ge.html">minister_ge.html</a>（備份；未列頂欄）</td>
+                        </tr>
                         <tr>
                             <th scope="row">地圖</th>
                             <td><a href="../map/map.html">map.html</a> · <a href="../map/map.html#taipei">#taipei</a> · <a href="../map/map.html#global">#global</a></td>
@@ -354,7 +392,7 @@
 
         <section class="site-guide-group site-guide-group--extra" aria-labelledby="sg-nav-extra">
             <h2 class="section-title" id="sg-nav-extra">extra/ 其餘</h2>
-            <p class="site-guide-folder-hint">未列頂欄主模板；<code>member</code>／<code>totoga2</code>／<code>minister</code> 已見上表。</p>
+            <p class="site-guide-folder-hint">未列頂欄主模板；<code>member</code>／<code>totoga2</code>／<code>minister</code> 與六六歌2 四入口已見主選單樹。</p>
             <div class="site-guide-nav-table-wrap">
                 <table class="site-guide-mini-table">
                     <thead>
@@ -364,6 +402,10 @@
                         </tr>
                     </thead>
                     <tbody>
+                        <tr>
+                            <td><a href="site-guide.html">site-guide.html</a></td>
+                            <td>全站導覽（本頁）</td>
+                        </tr>
                         <tr>
                             <td><a href="grok.html">grok.html</a></td>
                             <td>實驗單頁</td>
@@ -372,10 +414,6 @@
                             <td><a href="totoga2%20copy.html">totoga2 copy.html</a></td>
                             <td>複本總覽</td>
                         </tr>
-                        <tr>
-                            <td><a href="totoga2-copy-video.html">…-video</a> · <a href="totoga2-copy-ebook.html">…-ebook</a> · <a href="totoga2-copy-timeline.html">…-timeline</a></td>
-                            <td>無空白檔名子頁</td>
-                        </tr>
                         <tr>
                             <td><a href="Untitled-1.html">Untitled-1.html</a></td>
                             <td>草稿</td>
@@ -386,7 +424,7 @@
                         </tr>
                         <tr>
                             <td><a href="minister_ge.html">minister_ge.html</a></td>
-                            <td>minister 長版備份</td>
+                            <td>minister 長版備份（Yellow Note 小節亦列）</td>
                         </tr>
                     </tbody>
                 </table>
@@ -403,6 +441,15 @@
 
     <script src="../assets/js/particles.js"></script>
     <script src="../assets/js/portal-nav.js"></script>
+    <script>
+        /* 全站導覽頁：頂欄改為同分頁開啟（他頁仍由 portal-nav 另開） */
+        (function () {
+            document.querySelectorAll("body.site-guide-page nav.portal-nav a[target=\"_blank\"]").forEach(function (a) {
+                a.removeAttribute("target");
+                a.removeAttribute("rel");
+            });
+        })();
+    </script>
 </body>
 
 </html>
diff --git a/extra/totoga2-copy-video.html b/extra/totoga2-copy-video.html
index d5ae76c..2db7e61 100644
--- a/extra/totoga2-copy-video.html
+++ b/extra/totoga2-copy-video.html
@@ -48,24 +48,27 @@
             <section class="bilivideo-block" aria-labelledby="bilivideo-top">
                 <h3 id="bilivideo-top">上集</h3>
                 <div class="bilivideo-frame">
-                    <iframe src="https://player.bilibili.com/player.html?bvid=BV1SW411a7cZ&amp;page=1&amp;high_quality=1&amp;danmaku=0"
-                        title="Bilibili 影片：上集（BV1SW411a7cZ）" allowfullscreen></iframe>
+                    <iframe
+                        src="//player.bilibili.com/player.html?isOutside=true&aid=12288323&bvid=BV1Yx411B7TC&cid=20353565&p=1"
+                        scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"></iframe>
                 </div>
             </section>
             <section class="bilivideo-block" aria-labelledby="bilivideo-mid">
                 <h3 id="bilivideo-mid">中集</h3>
                 <p class="bilivideo-placeholder-note">預設與上集同一支；請替換 <code>bvid</code> 為中集 BV。</p>
                 <div class="bilivideo-frame">
-                    <iframe src="https://player.bilibili.com/player.html?bvid=BV1SW411a7cZ&amp;page=1&amp;high_quality=1&amp;danmaku=0"
-                        title="Bilibili 影片：中集（請替換 BV）" allowfullscreen></iframe>
+                    <iframe
+                        src="//player.bilibili.com/player.html?isOutside=true&aid=12288323&bvid=BV1Yx411B7TC&cid=20353561&p=2"
+                        scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"></iframe>
                 </div>
             </section>
             <section class="bilivideo-block" aria-labelledby="bilivideo-bot">
                 <h3 id="bilivideo-bot">下集</h3>
                 <p class="bilivideo-placeholder-note">預設與上集同一支；請替換 <code>bvid</code> 為下集 BV。</p>
                 <div class="bilivideo-frame">
-                    <iframe src="https://player.bilibili.com/player.html?bvid=BV1SW411a7cZ&amp;page=1&amp;high_quality=1&amp;danmaku=0"
-                        title="Bilibili 影片：下集（請替換 BV）" allowfullscreen></iframe>
+                    <iframe
+                        src="//player.bilibili.com/player.html?isOutside=true&aid=12288323&bvid=BV1Yx411B7TC&cid=20353562&p=3"
+                        scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"></iframe>
                 </div>
             </section>
         </div>
@@ -88,4 +91,4 @@
     <script src="../assets/js/portal-nav.js"></script>
 </body>
 
-</html>
+</html>
\ No newline at end of file