diff --git a/plugins/message_summary/templates/gemini_summary_card.html b/plugins/message_summary/templates/gemini_summary_card.html
index 9fe575c..7ec3c83 100644
--- a/plugins/message_summary/templates/gemini_summary_card.html
+++ b/plugins/message_summary/templates/gemini_summary_card.html
@@ -5,6 +5,9 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>{{ title }}</title>
     <style>
+        /* 说明：优先尝试加载与 Gemini 示例一致的 Inter / JetBrains Mono，失败时回退到系统字体，避免服务端无字体时样式崩坏。 */
+        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800;900&family=JetBrains+Mono:wght@500;700&display=swap');
+
         :root {
             --bg: #f8fafc;
             --surface: #ffffff;
@@ -26,14 +29,16 @@
         * { box-sizing: border-box; }
         body {
             margin: 0;
-            padding: 24px 0;
+            /* 说明：减少上下留白，避免截图后出现“背景很大、内容很小”的视觉问题。 */
+            padding: 10px 0 12px;
             background: var(--bg);
             color: var(--text);
             font-family: "Inter", "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
             -webkit-font-smoothing: antialiased;
         }
         .report-container {
-            width: 440px;
+            /* 说明：使用与截图视口更匹配的宽度，显著提升内容占比。 */
+            width: min(720px, calc(100vw - 20px));
             margin: 0 auto;
             background: var(--surface);
             box-shadow: var(--shadow);
@@ -49,7 +54,8 @@
             display: block;
         }
         .header {
-            padding: 18px 18px 14px;
+            /* 说明：同步放大内边距与字号节奏，避免在更宽卡片里内容显得过小。 */
+            padding: 20px 20px 16px;
             border-bottom: 1px solid var(--line);
         }
         .header-row {
@@ -60,7 +66,7 @@
             gap: 10px;
         }
         .header-title {
-            font-size: 15px;
+            font-size: 16px;
             font-weight: 900;
             color: var(--title);
             letter-spacing: -.02em;
@@ -72,16 +78,16 @@
         }
         .header-id {
             margin-top: 4px;
-            font-size: 10px;
+            font-size: 11px;
             color: var(--text-faint);
             font-weight: 600;
             letter-spacing: .03em;
         }
         .header-tag {
-            padding: 4px 8px;
+            padding: 5px 9px;
             background: #f1f5f9;
             border-radius: 4px;
-            font-size: 9px;
+            font-size: 10px;
             font-weight: 800;
             color: #64748b;
             text-transform: uppercase;
@@ -98,10 +104,10 @@
             background: #f8fafc;
             border: 1px solid #f1f5f9;
             border-radius: 4px;
-            padding: 8px 4px 6px;
+            padding: 9px 5px 7px;
         }
         .meta-value {
-            font-size: 11px;
+            font-size: 12px;
             font-weight: 800;
             color: #475569;
         }
@@ -109,11 +115,11 @@
             color: var(--brand);
         }
         .summary-body {
-            padding: 16px 18px 18px;
+            padding: 18px 20px 20px;
         }
         .markdown-body {
-            font-size: 12px;
-            line-height: 1.82;
+            font-size: 13px;
+            line-height: 1.86;
             color: var(--text);
             word-wrap: break-word;
         }
@@ -131,13 +137,13 @@
             font-weight: 800;
             letter-spacing: -.01em;
         }
-        .markdown-body h1 { font-size: 18px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
-        .markdown-body h2 { font-size: 16px; }
-        .markdown-body h3 { font-size: 14px; }
+        .markdown-body h1 { font-size: 20px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
+        .markdown-body h2 { font-size: 18px; }
+        .markdown-body h3 { font-size: 16px; }
         .markdown-body h4,
         .markdown-body h5,
-        .markdown-body h6 { font-size: 13px; }
-        .markdown-body p { margin: 8px 0; }
+        .markdown-body h6 { font-size: 14px; }
+        .markdown-body p { margin: 10px 0; }
         .markdown-body ul,
         .markdown-body ol {
             margin: 8px 0 12px;
@@ -172,7 +178,7 @@
         }
         .markdown-body code {
             font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
-            font-size: 11px;
+            font-size: 12px;
             background: #eff6ff;
             color: #1e40af;
             padding: 1px 4px;
@@ -192,7 +198,7 @@
             color: inherit;
             padding: 0;
             border-radius: 0;
-            font-size: 11px;
+            font-size: 12px;
             line-height: 1.7;
         }
         .markdown-body table {
@@ -244,7 +250,7 @@
             background: var(--ok-soft);
             border-left: 2px solid var(--ok-line);
             border-radius: 0 4px 4px 0;
-            font-size: 11px;
+            font-size: 12px;
             color: #166534;
         }
     </style>
@@ -295,4 +301,3 @@
     </div>
 </body>
 </html>
-