优化菜单图片风格为纵向紧凑布局并增强视觉层次

plugins/robot_menu/menu_render_tool.py

@@ -141,9 +141,14 @@ class RobotMenuRenderTool:
         for feature in Feature:
             title, _ = self._split_feature_description(feature.description)
             command_examples = self._get_feature_command_examples(feature)
+            # 为纵向卡片增加轻量色彩分组，提升视觉节奏感，避免纯白卡片过于单调。
+            try:
+                tone_idx = int(feature.value) % 4
+            except Exception:
+                tone_idx = 0
             feature_cards.append(
                 f"""
-                <section class="feature-card">
+                <section class="feature-card tone-{tone_idx}">
                     <div class="feature-top">
                         <div class="feature-index">{feature.value}</div>
                         <div class="feature-meta">
@@ -170,19 +175,18 @@ class RobotMenuRenderTool:
               --line: #d8e4ef;
               --text: #1f2d3d;
               --muted: #5e748a;
-              --brand: #0d6efd;
-              --brand-soft: #e7f1ff;
-              --ok: #1f9d5a;
-              --ok-soft: #e9f8f0;
-              --off: #c53d3d;
-              --off-soft: #fdecec;
+              --brand: #0f5fb7;
+              --brand-soft: #eaf3ff;
             }}
             * {{ box-sizing: border-box; }}
             body {{
               margin: 0;
               padding: 14px;
               font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
-              background: linear-gradient(180deg, #eef4fa 0%, #f8fbff 100%);
+              background:
+                radial-gradient(circle at 10% 10%, rgba(15,95,183,0.08), transparent 32%),
+                radial-gradient(circle at 90% 0%, rgba(31,126,255,0.10), transparent 30%),
+                linear-gradient(180deg, #eef4fa 0%, #f8fbff 100%);
               color: var(--text);
             }}
             .page {{
@@ -196,7 +200,9 @@ class RobotMenuRenderTool:
             }}
             .hero {{
               padding: 14px 16px 12px 16px;
-              background: linear-gradient(135deg, #0d6efd 0%, #0aa2c0 100%);
+              background:
+                linear-gradient(130deg, rgba(255,255,255,0.12), rgba(255,255,255,0) 45%),
+                linear-gradient(135deg, #0f5fb7 0%, #2f8cff 55%, #3ca1ff 100%);
               color: #fff;
             }}
             .hero h1 {{ margin: 0 0 4px 0; font-size: 22px; }}
@@ -217,21 +223,28 @@ class RobotMenuRenderTool:
               line-height: 1.5;
               font-size: 12px;
             }}
-            .feature-list {{ display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }}
+            /* 纵向单列流式布局：避免双列模式下因内容长度差异产生空白洞。 */
+            .feature-list {{ display: flex; flex-direction: column; gap: 8px; }}
             .feature-card {{
-              border: 1px solid var(--line);
+              border: 1px solid #d6e4f3;
+              border-left-width: 4px;
               border-radius: 10px;
               padding: 8px 10px;
-              background: #fff;
+              background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
+              box-shadow: 0 4px 10px rgba(16, 64, 125, 0.05);
             }}
+            .feature-card.tone-0 {{ border-left-color: #2f8cff; }}
+            .feature-card.tone-1 {{ border-left-color: #10b981; }}
+            .feature-card.tone-2 {{ border-left-color: #f59e0b; }}
+            .feature-card.tone-3 {{ border-left-color: #ef4444; }}
             .feature-top {{ display: flex; align-items: center; gap: 8px; }}
             .feature-index {{
               min-width: 28px;
               text-align: center;
               font-weight: 700;
-              color: #114a84;
+              color: #0f5fb7;
               background: var(--brand-soft);
-              border: 1px solid #cfe2ff;
+              border: 1px solid #cfe1fb;
               border-radius: 6px;
               padding: 2px 4px;
               font-size: 11px;
@@ -243,8 +256,8 @@ class RobotMenuRenderTool:
               margin-top: 6px;
               padding: 6px 8px;
               border-radius: 7px;
-              background: #f8fbff;
-              border: 1px dashed #d7e6f5;
+              background: #f7fbff;
+              border: 1px dashed #d2e4f7;
             }}
             .feature-body p {{ margin: 0; font-size: 11px; color: #3d5870; line-height: 1.5; }}
             .line-main {{ color: #1f3f62; }}