diff --git a/app/pages/[slug]/page.tsx b/app/pages/[slug]/page.tsx
index cdf8c45..acb73d7 100644
--- a/app/pages/[slug]/page.tsx
+++ b/app/pages/[slug]/page.tsx
@@ -10,6 +10,7 @@ import { PostLayout } from '@/components/post-layout';
 import { ScrollReveal } from '@/components/scroll-reveal';
 import { SectionDivider } from '@/components/section-divider';
 import { JsonLd } from '@/components/json-ld';
+import { DevEnvDeviceHero } from '@/components/dev-env-device-hero';
 
 export function generateStaticParams() {
   const params = allPages.map((page) => ({
@@ -115,18 +116,22 @@ export default async function StaticPage({ params }: Props) {
                 data-toc-content={slug}
                 className="prose prose-lg prose-slate mx-auto max-w-none dark:prose-invert"
               >
-                {page.feature_image && (
-                  <div className="-mx-4 mb-8 transition-all duration-500 sm:-mx-12 lg:-mx-20 group-[.toc-open]:lg:-mx-4">
-                    <Image
-                      src={page.feature_image.replace('../assets', '/assets')}
-                      alt={page.title}
-                      width={1200}
-                      height={600}
-                      sizes="(max-width: 768px) 100vw, (max-width: 1200px) 90vw, 1200px"
-                      priority
-                      className="w-full rounded-xl shadow-lg"
-                    />
-                  </div>
+                {slug === 'dev-env' ? (
+                  <DevEnvDeviceHero />
+                ) : (
+                  page.feature_image && (
+                    <div className="-mx-4 mb-8 transition-all duration-500 sm:-mx-12 lg:-mx-20 group-[.toc-open]:lg:-mx-4">
+                      <Image
+                        src={page.feature_image.replace('../assets', '/assets')}
+                        alt={page.title}
+                        width={1200}
+                        height={600}
+                        sizes="(max-width: 768px) 100vw, (max-width: 1200px) 90vw, 1200px"
+                        priority
+                        className="w-full rounded-xl shadow-lg"
+                      />
+                    </div>
+                  )
                 )}
                 <div dangerouslySetInnerHTML={{ __html: page.body.html }} />
               </article>
diff --git a/components/dev-env-device-hero.tsx b/components/dev-env-device-hero.tsx
new file mode 100644
index 0000000..09eb48f
--- /dev/null
+++ b/components/dev-env-device-hero.tsx
@@ -0,0 +1,97 @@
+'use client';
+
+import { SiArchlinux, SiUbuntu, SiLinux } from 'react-icons/si';
+
+/**
+ * Mac mini + 螢幕 3D 裝置展示
+ * 使用純 CSS 3D transforms，取代開發工作環境頁的 feature_image
+ */
+export function DevEnvDeviceHero() {
+  return (
+    <div
+      className="dev-env-device-hero -mx-4 mb-8 flex justify-center py-8 sm:-mx-12 sm:py-12 lg:-mx-20 group-[.toc-open]:lg:-mx-4"
+      role="img"
+      aria-label="Mac mini、鍵盤與外接螢幕的 3D 裝置展示"
+    >
+      <div className="dev-env-device-scene">
+        {/* Monitor */}
+        <div className="dev-env-monitor">
+          {/* Bezel */}
+          <div className="dev-env-bezel">
+            {/* Screen */}
+            <div className="dev-env-screen">
+              {/* macOS Desktop mockup */}
+              <div className="dev-env-desktop">
+                {/* macOS Menu bar - 半透明毛玻璃 */}
+                <div className="dev-env-menubar">
+                  <span className="dev-env-apple" aria-hidden>{'\uF8FF'}</span>
+                  <span className="dev-env-app-name">Terminal</span>
+                  <span className="dev-env-spacer" />
+                  <span className="dev-env-menubar-right">
+                    <span className="dev-env-menubar-icon" aria-hidden />
+                    <span className="dev-env-menubar-icon" aria-hidden />
+                    <span className="dev-env-menubar-icon" aria-hidden />
+                    <span className="dev-env-time">14:30</span>
+                  </span>
+                </div>
+                {/* Window - Terminal 顯示 Arch / Ubuntu / Tux 三個 Logo */}
+                <div className="dev-env-window">
+                  <div className="dev-env-window-titlebar">
+                    <span className="dev-env-traffic-light dev-env-traffic-red" aria-hidden />
+                    <span className="dev-env-traffic-light dev-env-traffic-yellow" aria-hidden />
+                    <span className="dev-env-traffic-light dev-env-traffic-green" aria-hidden />
+                  </div>
+                  <div className="dev-env-window-content">
+                    <div className="dev-env-terminal-prompt">
+                      <span className="dev-env-prompt">$</span> neofetch --ascii_distro arch,ubuntu,tux
+                    </div>
+                    <div className="dev-env-terminal-logos">
+                      <div className="dev-env-logo-svg" aria-label="Arch Linux logo">
+                        <SiArchlinux className="dev-env-svg-arch" size={36} />
+                      </div>
+                      <div className="dev-env-logo-svg" aria-label="Ubuntu logo">
+                        <SiUbuntu className="dev-env-svg-ubuntu" size={36} />
+                      </div>
+                      <div className="dev-env-logo-svg" aria-label="Tux Linux penguin logo">
+                        <SiLinux className="dev-env-svg-tux" size={36} />
+                      </div>
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+          {/* Monitor stand */}
+          <div className="dev-env-stand" />
+        </div>
+
+        {/* Desk surface - Mac mini 與鍵盤均勻放置 */}
+        <div className="dev-env-desk">
+          {/* 鍵盤 - Magic Keyboard 風格，鍵帽網格 */}
+          <div className="dev-env-keyboard">
+            <div className="dev-env-keyboard-body">
+              <div className="dev-env-keyboard-keys">
+                {[14, 14, 13, 12].map((keyCount, row) => (
+                  <div key={row} className="dev-env-keyboard-row">
+                    {Array.from({ length: keyCount }).map((_, col) => (
+                      <div key={col} className="dev-env-key" />
+                    ))}
+                  </div>
+                ))}
+                <div className="dev-env-keyboard-row dev-env-keyboard-row-space">
+                  <div className="dev-env-key dev-env-key-space" />
+                </div>
+              </div>
+            </div>
+          </div>
+          {/* Mac mini M4 2024 - 頂視，避免 3D 偽影 */}
+          <div className="dev-env-macmini">
+            <div className="dev-env-macmini-top">
+              <span className="dev-env-macmini-apple" aria-hidden>{'\uF8FF'}</span>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/styles/globals.css b/styles/globals.css
index b09d785..bad9d3d 100644
--- a/styles/globals.css
+++ b/styles/globals.css
@@ -56,6 +56,460 @@
   100% { transform: translate3d(0,0,0) scale(1); }
 }
 
+/* Dev env device hero - Mac mini + 螢幕 3D mockup */
+@keyframes device-float {
+  0% { transform: perspective(800px) rotateY(-4deg) rotateX(2deg) translate3d(0, 0, 0); }
+  50% { transform: perspective(800px) rotateY(-4deg) rotateX(2deg) translate3d(0, -8px, 0); }
+  100% { transform: perspective(800px) rotateY(-4deg) rotateX(2deg) translate3d(0, 0, 0); }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .dev-env-device-hero .dev-env-device-scene {
+    animation: none;
+  }
+}
+
+.dev-env-device-hero {
+  min-height: 320px;
+}
+
+.dev-env-device-scene {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  perspective: 800px;
+  transform-style: preserve-3d;
+  animation: device-float 8s ease-in-out infinite;
+}
+
+.dev-env-monitor {
+  position: relative;
+  width: min(340px, 88vw);
+  padding-bottom: 75%; /* 4:3 較高，讓 terminal 內容完整顯示 */
+  transform-style: preserve-3d;
+}
+
+.dev-env-monitor + .dev-env-desk {
+  margin-top: 40px;
+}
+
+.dev-env-bezel {
+  position: absolute;
+  inset: 0;
+  background: linear-gradient(145deg, #2d2d2d 0%, #1a1a1a 100%);
+  border-radius: 12px;
+  padding: 8px;
+  box-shadow:
+    0 25px 50px -12px rgba(0, 0, 0, 0.4),
+    0 0 0 1px rgba(255, 255, 255, 0.05) inset,
+    -2px -2px 8px rgba(0, 0, 0, 0.3);
+}
+
+.dark .dev-env-bezel {
+  background: linear-gradient(145deg, #1a1a1a 0%, #0d0d0d 100%);
+}
+
+.dev-env-screen {
+  position: absolute;
+  inset: 8px;
+  border-radius: 6px;
+  overflow: hidden;
+  background: linear-gradient(165deg, #e8ecf0 0%, #dde2e8 50%, #e2e6ec 100%);
+  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.4) inset;
+}
+
+.dark .dev-env-screen {
+  background: linear-gradient(165deg, #1a1d21 0%, #15181c 50%, #1c1f24 100%);
+}
+
+/* macOS desktop mockup */
+.dev-env-desktop {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+/* macOS Menu bar - 毛玻璃效果 */
+.dev-env-menubar {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  height: 26px;
+  padding: 0 14px;
+  background: rgba(255, 255, 255, 0.72);
+  backdrop-filter: blur(20px) saturate(180%);
+  -webkit-backdrop-filter: blur(20px) saturate(180%);
+  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
+  font-size: 13px;
+  font-weight: 500;
+  color: rgba(0, 0, 0, 0.88);
+}
+
+.dark .dev-env-menubar {
+  background: rgba(50, 50, 50, 0.72);
+  border-bottom-color: rgba(255, 255, 255, 0.06);
+  color: rgba(255, 255, 255, 0.9);
+}
+
+.dev-env-apple {
+  font-size: 17px;
+  font-weight: 400;
+  margin-right: 6px;
+  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
+}
+
+.dev-env-app-name {
+  opacity: 0.95;
+}
+
+.dev-env-spacer {
+  flex: 1;
+}
+
+.dev-env-menubar-right {
+  display: flex;
+  align-items: center;
+  gap: 14px;
+}
+
+.dev-env-menubar-icon {
+  width: 16px;
+  height: 16px;
+  border-radius: 50%;
+  background: rgba(0, 0, 0, 0.25);
+}
+
+.dark .dev-env-menubar-icon {
+  background: rgba(255, 255, 255, 0.2);
+}
+
+.dev-env-time {
+  font-size: 12px;
+  opacity: 0.9;
+}
+
+.dev-env-window {
+  flex: 1;
+  min-height: 80px;
+  margin: 12px 16px;
+  background: rgba(255, 255, 255, 0.98);
+  border-radius: 10px;
+  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
+  overflow: hidden;
+  border: 1px solid rgba(0, 0, 0, 0.06);
+  display: flex;
+  flex-direction: column;
+}
+
+.dark .dev-env-window {
+  background: rgba(30, 30, 30, 0.98);
+  border-color: rgba(255, 255, 255, 0.06);
+}
+
+/* macOS 紅黃綠三色按鈕 */
+.dev-env-window-titlebar {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  height: 32px;
+  padding: 0 12px;
+  background: rgba(0, 0, 0, 0.04);
+  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
+}
+
+.dark .dev-env-window-titlebar {
+  background: rgba(255, 255, 255, 0.03);
+  border-bottom-color: rgba(255, 255, 255, 0.06);
+}
+
+.dev-env-traffic-light {
+  width: 12px;
+  height: 12px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.dev-env-traffic-red {
+  background: #ff5f57;
+  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
+}
+
+.dev-env-traffic-yellow {
+  background: #febc2e;
+  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
+}
+
+.dev-env-traffic-green {
+  background: #28c840;
+  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
+}
+
+.dev-env-window-content {
+  padding: 10px 14px;
+  font-family: ui-monospace, "SF Mono", "Monaco", "Consolas", monospace;
+  font-size: 9px;
+  line-height: 1.2;
+  overflow: visible;
+  flex: 1;
+  min-height: 52px;
+  display: flex;
+  flex-direction: column;
+}
+
+.dev-env-terminal-prompt {
+  margin-bottom: 8px;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  flex-shrink: 0;
+}
+
+.dev-env-terminal-logos {
+  display: flex;
+  gap: 12px;
+  justify-content: center;
+  align-items: center;
+  flex-wrap: wrap;
+  flex: 1 0 auto;
+  min-height: 36px;
+  padding: 4px 0;
+}
+
+.dev-env-logo-svg {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+}
+
+.dev-env-logo-svg svg {
+  flex-shrink: 0;
+  display: block;
+}
+
+.dev-env-svg-arch {
+  color: #1793d1;
+}
+
+.dark .dev-env-svg-arch {
+  color: #38bdf8;
+}
+
+.dev-env-svg-ubuntu {
+  color: #e95420;
+}
+
+.dark .dev-env-svg-ubuntu {
+  color: #f97316;
+}
+
+.dev-env-svg-tux {
+  color: #334155;
+}
+
+.dark .dev-env-svg-tux {
+  color: #cbd5e1;
+}
+
+.dev-env-terminal-line {
+  height: 8px;
+  margin-bottom: 6px;
+  background: rgba(0, 0, 0, 0.08);
+  border-radius: 2px;
+}
+
+.dev-env-terminal-line.short {
+  width: 60%;
+}
+
+.dark .dev-env-terminal-line {
+  background: rgba(255, 255, 255, 0.05);
+}
+
+.dev-env-prompt {
+  color: #22c55e;
+}
+
+.dark .dev-env-prompt {
+  color: #4ade80;
+}
+
+.dev-env-stand {
+  position: absolute;
+  bottom: -12px;
+  left: 50%;
+  transform: translateX(-50%);
+  width: 60px;
+  height: 24px;
+  background: linear-gradient(180deg, #8a8a8a 0%, #6e6e6e 100%);
+  border-radius: 12px 12px 0 0;
+  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
+}
+
+.dark .dev-env-stand {
+  background: linear-gradient(180deg, #2d2d2d 0%, #1a1a1a 100%);
+  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
+}
+
+.dev-env-desk {
+  position: relative;
+  width: min(360px, 90vw);
+  height: 56px;
+  margin: 0 auto;
+  padding: 0 12px;
+  display: flex;
+  align-items: flex-end;
+  justify-content: space-evenly;
+  gap: 12px;
+  background: linear-gradient(180deg, #b8b8b8 0%, #9a9a9a 50%, #888888 100%);
+  border-radius: 4px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
+}
+
+.dark .dev-env-desk {
+  background: linear-gradient(180deg, #3d3d3d 0%, #2a2a2a 100%);
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
+}
+
+/* 鍵盤 - Magic Keyboard 風格，鍵帽網格 */
+.dev-env-keyboard {
+  width: 110px;
+  height: 36px;
+  display: flex;
+  align-items: flex-end;
+  justify-content: center;
+}
+
+.dev-env-keyboard-body {
+  width: 100%;
+  padding: 4px 6px;
+  background: linear-gradient(
+    180deg,
+    #e8e8ed 0%,
+    #d1d1d6 25%,
+    #c8c8cd 60%,
+    #b8b8bd 100%
+  );
+  border-radius: 6px;
+  box-shadow:
+    0 2px 8px rgba(0, 0, 0, 0.2),
+    inset 0 1px 0 rgba(255, 255, 255, 0.6);
+}
+
+.dark .dev-env-keyboard-body {
+  background: linear-gradient(
+    180deg,
+    #4a4a4f 0%,
+    #3d3d42 40%,
+    #2d2d32 100%
+  );
+  box-shadow:
+    0 2px 8px rgba(0, 0, 0, 0.4),
+    inset 0 1px 0 rgba(255, 255, 255, 0.06);
+}
+
+.dev-env-keyboard-keys {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.dev-env-keyboard-row {
+  display: flex;
+  justify-content: center;
+  gap: 1px;
+}
+
+.dev-env-keyboard-row:nth-child(2) { padding-left: 4px; }
+.dev-env-keyboard-row:nth-child(3) { padding-left: 8px; }
+.dev-env-keyboard-row:nth-child(4) { padding-left: 12px; }
+.dev-env-keyboard-row:nth-child(5) { padding-left: 20px; }
+
+.dev-env-keyboard-row-space {
+  padding-left: 24px !important;
+}
+
+.dev-env-key-space {
+  width: 36px;
+}
+
+.dev-env-key {
+  width: 5px;
+  height: 4px;
+  background: linear-gradient(
+    180deg,
+    rgba(255, 255, 255, 0.9) 0%,
+    rgba(0, 0, 0, 0.08) 100%
+  );
+  border-radius: 1px;
+  flex-shrink: 0;
+}
+
+.dark .dev-env-key {
+  background: linear-gradient(
+    180deg,
+    rgba(255, 255, 255, 0.08) 0%,
+    rgba(0, 0, 0, 0.4) 100%
+  );
+}
+
+/* Mac mini - 頂視，無 3D 旋轉，避免偽影 */
+.dev-env-macmini {
+  display: flex;
+  align-items: flex-end;
+  justify-content: center;
+  height: 44px;
+}
+
+.dev-env-macmini-top {
+  width: 64px;
+  height: 64px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: linear-gradient(
+    145deg,
+    #eaeaf0 0%,
+    #d4d4d9 25%,
+    #c4c4c9 55%,
+    #b4b4b9 85%,
+    #a8a8ad 100%
+  );
+  border-radius: 14px;
+  box-shadow:
+    0 4px 12px rgba(0, 0, 0, 0.15),
+    inset 0 2px 4px rgba(255, 255, 255, 0.6),
+    inset 0 -1px 2px rgba(0, 0, 0, 0.06);
+}
+
+.dark .dev-env-macmini-top {
+  background: linear-gradient(
+    145deg,
+    #7a7a7f 0%,
+    #5e5e63 25%,
+    #4e4e53 55%,
+    #3e3e43 85%,
+    #323237 100%
+  );
+  box-shadow:
+    0 4px 12px rgba(0, 0, 0, 0.35),
+    inset 0 2px 4px rgba(255, 255, 255, 0.08),
+    inset 0 -1px 2px rgba(0, 0, 0, 0.3);
+}
+
+.dev-env-macmini-apple {
+  font-size: 24px;
+  font-weight: 400;
+  color: rgba(0, 0, 0, 0.5);
+  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
+}
+
+.dark .dev-env-macmini-apple {
+  color: rgba(255, 255, 255, 0.4);
+}
+
+
 @keyframes mastodon-shimmer {
   0% { background-position: -200% 0; }
   100% { background-position: 200% 0; }