diff --git a/README.md b/README.md
index f706a72..992de20 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,20 @@
 
 ## 学习路线图
 
-![学习路线图](_images/roadmap.svg)
+```mermaid
+graph LR
+    Start[Docker 学习入口] --> Ch1[第1章：Docker 简介]
+
+    Ch1 --> Role1["运维新手<br/>第1-4章"]
+    Ch1 --> Role2["开发者<br/>第1-3章 → 第5-8章"]
+    Ch1 --> Role3["DevOps 工程师<br/>第1章 → 第9-14章 → 第18章"]
+    Ch1 --> Role4["架构师<br/>第1章 → 第15-21章"]
+
+    Role1 --> End1["掌握基本操作"]
+    Role2 --> End2["构建与部署应用"]
+    Role3 --> End3["自动化与运维"]
+    Role4 --> End4["设计容器方案"]
+```
 | 读者角色 | 学习重点 | 核心成果 |
 |---------|---------|---------|
 | **运维新手** | 第1-4章 | 掌握容器的基本概念与操作 |
diff --git a/_images/roadmap.svg b/_images/roadmap.svg
deleted file mode 100644
index 0ae349d..0000000
--- a/_images/roadmap.svg
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 960 320" font-family="system-ui, -apple-system, sans-serif">
-  <defs>
-    <style>
-      .box { rx: 8; ry: 8; stroke-width: 1.5; }
-      .start { fill: #e8f5e9; stroke: #4caf50; }
-      .mid { fill: #e3f2fd; stroke: #2196f3; }
-      .role { fill: #fff3e0; stroke: #ff9800; }
-      .end { fill: #f3e5f5; stroke: #9c27b0; }
-      .txt { font-size: 13px; fill: #333; text-anchor: middle; dominant-baseline: central; }
-      .txt-sm { font-size: 11px; fill: #666; text-anchor: middle; dominant-baseline: central; }
-      .arrow { stroke: #888; stroke-width: 1.5; fill: none; marker-end: url(#arrowhead); }
-    </style>
-    <marker id="arrowhead" markerWidth="8" markerHeight="6" refX="8" refY="3" orient="auto">
-      <polygon points="0 0, 8 3, 0 6" fill="#888"/>
-    </marker>
-  </defs>
-
-  <!-- Start -->
-  <rect class="box start" x="20" y="130" width="130" height="44"/>
-  <text class="txt" x="85" y="152">Docker 学习入口</text>
-
-  <!-- Ch1 -->
-  <rect class="box mid" x="200" y="130" width="150" height="44"/>
-  <text class="txt" x="275" y="152">第1章：Docker 简介</text>
-
-  <!-- Arrow Start -> Ch1 -->
-  <line class="arrow" x1="150" y1="152" x2="198" y2="152"/>
-
-  <!-- Role 1: 运维新手 -->
-  <rect class="box role" x="420" y="10" width="200" height="44"/>
-  <text class="txt" x="520" y="25">运维新手</text>
-  <text class="txt-sm" x="520" y="42">第1-4章</text>
-
-  <!-- Role 2: 开发者 -->
-  <rect class="box role" x="420" y="80" width="200" height="44"/>
-  <text class="txt" x="520" y="95">开发者</text>
-  <text class="txt-sm" x="520" y="112">第1-3章 → 第5-8章</text>
-
-  <!-- Role 3: DevOps 工程师 -->
-  <rect class="box role" x="420" y="190" width="200" height="44"/>
-  <text class="txt" x="520" y="205">DevOps 工程师</text>
-  <text class="txt-sm" x="520" y="222">第1章 → 第9-14章 → 第18章</text>
-
-  <!-- Role 4: 架构师 -->
-  <rect class="box role" x="420" y="260" width="200" height="44"/>
-  <text class="txt" x="520" y="275">架构师</text>
-  <text class="txt-sm" x="520" y="292">第1章 → 第15-21章</text>
-
-  <!-- Arrows Ch1 -> Roles -->
-  <path class="arrow" d="M350,152 L370,152 L370,32 L418,32"/>
-  <path class="arrow" d="M350,152 L370,152 L370,102 L418,102"/>
-  <path class="arrow" d="M350,152 L370,152 L370,212 L418,212"/>
-  <path class="arrow" d="M350,152 L370,152 L370,282 L418,282"/>
-
-  <!-- End 1 -->
-  <rect class="box end" x="700" y="10" width="200" height="44"/>
-  <text class="txt" x="800" y="32">掌握基本操作</text>
-
-  <!-- End 2 -->
-  <rect class="box end" x="700" y="80" width="200" height="44"/>
-  <text class="txt" x="800" y="102">构建与部署应用</text>
-
-  <!-- End 3 -->
-  <rect class="box end" x="700" y="190" width="200" height="44"/>
-  <text class="txt" x="800" y="212">自动化与运维</text>
-
-  <!-- End 4 -->
-  <rect class="box end" x="700" y="260" width="200" height="44"/>
-  <text class="txt" x="800" y="282">设计容器方案</text>
-
-  <!-- Arrows Roles -> Ends -->
-  <line class="arrow" x1="620" y1="32" x2="698" y2="32"/>
-  <line class="arrow" x1="620" y1="102" x2="698" y2="102"/>
-  <line class="arrow" x1="620" y1="212" x2="698" y2="212"/>
-  <line class="arrow" x1="620" y1="282" x2="698" y2="282"/>
-</svg>
\ No newline at end of file