diff --git a/README.md b/README.md
index 5b4f1565..6dd89ecd 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,12 @@
 <p align="center">
-  <img src="assets/logo.png" alt="OpenMontage" width="200">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="assets/monty-dark.svg">
+    <img src="assets/monty-light.svg" alt="Monty the Clapper — the official mascot of OpenMontage" width="200">
+  </picture>
 </p>
 
+<p align="center"><sub><em>Monty the Clapper — the official mascot of OpenMontage</em></sub></p>
+
 <h1 align="center">OpenMontage</h1>
 
 <p align="center"><strong>The first open-source, agentic video production system.</strong></p>
diff --git a/README_zh-CN.md b/README_zh-CN.md
index ca663047..b8e3b7f2 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -1,7 +1,12 @@
 <p align="center">
-  <img src="assets/logo.png" alt="OpenMontage" width="200">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="assets/monty-dark.svg">
+    <img src="assets/monty-light.svg" alt="Monty the Clapper — OpenMontage 官方吉祥物" width="200">
+  </picture>
 </p>
 
+<p align="center"><sub><em>Monty the Clapper — OpenMontage 官方吉祥物</em></sub></p>
+
 <h1 align="center">OpenMontage</h1>
 
 <p align="center"><strong>首个开源的，代理化（agentic）的视频制作系统</strong></p>
diff --git a/assets/monty-dark.svg b/assets/monty-dark.svg
new file mode 100644
index 00000000..dc13e5d4
--- /dev/null
+++ b/assets/monty-dark.svg
@@ -0,0 +1,47 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" width="200" height="200" role="img" aria-label="Monty the Clapper, the OpenMontage mascot">
+  <defs>
+    <pattern id="mstr" width="22" height="22" patternTransform="rotate(45)" patternUnits="userSpaceOnUse">
+      <rect width="11" height="22" fill="#241d15"/>
+    </pattern>
+  </defs>
+
+  <!-- idle float -->
+  <g>
+    <animateTransform attributeName="transform" type="translate"
+      values="0 0; 0 -7; 0 0" keyTimes="0;0.5;1"
+      calcMode="spline" keySplines="0.42 0 0.58 1;0.42 0 0.58 1"
+      dur="4.5s" repeatCount="indefinite"/>
+
+    <!-- legs -->
+    <rect x="74" y="156" width="16" height="26" rx="8" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3"/>
+    <rect x="112" y="156" width="16" height="26" rx="8" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3"/>
+
+    <!-- clapper jaw, hinged left -->
+    <g>
+      <animateTransform attributeName="transform" type="rotate"
+        values="-22 46 88; -22 46 88; -2 46 88; -2 46 88; -26 46 88; -22 46 88"
+        keyTimes="0;0.62;0.70;0.78;0.86;1"
+        dur="5s" repeatCount="indefinite"/>
+      <rect x="42" y="64" width="120" height="24" rx="10" fill="#f2ecdf"/>
+      <rect x="42" y="64" width="120" height="24" rx="10" fill="url(#mstr)"/>
+    </g>
+
+    <!-- slate body -->
+    <rect x="42" y="88" width="120" height="76" rx="14" fill="#241d15" stroke="#f2ecdf" stroke-width="3.5"/>
+    <rect x="42" y="88" width="120" height="20" rx="10" fill="#f2ecdf"/>
+    <rect x="42" y="88" width="120" height="20" rx="10" fill="url(#mstr)"/>
+
+    <!-- arms -->
+    <rect x="24" y="116" width="24" height="14" rx="7" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3" transform="rotate(24 36 123)"/>
+    <rect x="156" y="116" width="24" height="14" rx="7" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3" transform="rotate(-24 168 123)"/>
+
+    <!-- face -->
+    <circle cx="79" cy="132" r="13" fill="#f2ecdf"/>
+    <circle cx="123" cy="132" r="13" fill="#f2ecdf"/>
+    <circle cx="81" cy="133" r="5.5" fill="#241d15"/>
+    <circle cx="121" cy="133" r="5.5" fill="#241d15"/>
+    <circle cx="61" cy="146" r="5" fill="#e0704f" opacity=".85"/>
+    <circle cx="141" cy="146" r="5" fill="#e0704f" opacity=".85"/>
+    <path d="M93 148 Q101 155 109 148" stroke="#f2ecdf" stroke-width="4" stroke-linecap="round" fill="none"/>
+  </g>
+</svg>
diff --git a/assets/monty-light.svg b/assets/monty-light.svg
new file mode 100644
index 00000000..498da5fa
--- /dev/null
+++ b/assets/monty-light.svg
@@ -0,0 +1,47 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" width="200" height="200" role="img" aria-label="Monty the Clapper, the OpenMontage mascot">
+  <defs>
+    <pattern id="mstr" width="22" height="22" patternTransform="rotate(45)" patternUnits="userSpaceOnUse">
+      <rect width="11" height="22" fill="#f2ecdf"/>
+    </pattern>
+  </defs>
+
+  <!-- idle float -->
+  <g>
+    <animateTransform attributeName="transform" type="translate"
+      values="0 0; 0 -7; 0 0" keyTimes="0;0.5;1"
+      calcMode="spline" keySplines="0.42 0 0.58 1;0.42 0 0.58 1"
+      dur="4.5s" repeatCount="indefinite"/>
+
+    <!-- legs -->
+    <rect x="74" y="156" width="16" height="26" rx="8" fill="#3a2f26" stroke="#241d15" stroke-width="3"/>
+    <rect x="112" y="156" width="16" height="26" rx="8" fill="#3a2f26" stroke="#241d15" stroke-width="3"/>
+
+    <!-- clapper jaw, hinged left -->
+    <g>
+      <animateTransform attributeName="transform" type="rotate"
+        values="-22 46 88; -22 46 88; -2 46 88; -2 46 88; -26 46 88; -22 46 88"
+        keyTimes="0;0.62;0.70;0.78;0.86;1"
+        dur="5s" repeatCount="indefinite"/>
+      <rect x="42" y="64" width="120" height="24" rx="10" fill="#241d15"/>
+      <rect x="42" y="64" width="120" height="24" rx="10" fill="url(#mstr)"/>
+    </g>
+
+    <!-- slate body -->
+    <rect x="42" y="88" width="120" height="76" rx="14" fill="#241d15" stroke="#241d15" stroke-width="3.5"/>
+    <rect x="42" y="88" width="120" height="20" rx="10" fill="#241d15"/>
+    <rect x="42" y="88" width="120" height="20" rx="10" fill="url(#mstr)"/>
+
+    <!-- arms -->
+    <rect x="24" y="116" width="24" height="14" rx="7" fill="#3a2f26" stroke="#241d15" stroke-width="3" transform="rotate(24 36 123)"/>
+    <rect x="156" y="116" width="24" height="14" rx="7" fill="#3a2f26" stroke="#241d15" stroke-width="3" transform="rotate(-24 168 123)"/>
+
+    <!-- face -->
+    <circle cx="79" cy="132" r="13" fill="#f2ecdf"/>
+    <circle cx="123" cy="132" r="13" fill="#f2ecdf"/>
+    <circle cx="81" cy="133" r="5.5" fill="#241d15"/>
+    <circle cx="121" cy="133" r="5.5" fill="#241d15"/>
+    <circle cx="61" cy="146" r="5" fill="#e0704f" opacity=".85"/>
+    <circle cx="141" cy="146" r="5" fill="#e0704f" opacity=".85"/>
+    <path d="M93 148 Q101 155 109 148" stroke="#f2ecdf" stroke-width="4" stroke-linecap="round" fill="none"/>
+  </g>
+</svg>
diff --git a/assets/social_preview.png b/assets/social_preview.png
index e6038409..86b4aeb7 100644
Binary files a/assets/social_preview.png and b/assets/social_preview.png differ
diff --git a/assets/social_preview.source.html b/assets/social_preview.source.html
new file mode 100644
index 00000000..02c90945
--- /dev/null
+++ b/assets/social_preview.source.html
@@ -0,0 +1,94 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<style>
+  * { margin:0; padding:0; box-sizing:border-box; }
+  html,body { width:1280px; height:640px; }
+  body {
+    background:#171310;
+    font-family:"Segoe UI", system-ui, sans-serif;
+    display:flex; align-items:center; justify-content:center;
+    overflow:hidden; position:relative;
+  }
+  /* warm key light behind the mascot */
+  .glow {
+    position:absolute; left:150px; top:50%; transform:translateY(-50%);
+    width:620px; height:620px; border-radius:50%;
+    background:radial-gradient(circle, rgba(224,112,79,.20) 0%, rgba(224,112,79,.07) 42%, rgba(23,19,16,0) 68%);
+  }
+  /* clapper-stripe motif, bottom-right, very quiet */
+  .motif {
+    position:absolute; right:0; bottom:0; width:560px; height:360px;
+    background:repeating-linear-gradient(45deg,#f2ecdf 0 26px, transparent 26px 52px);
+    opacity:.05;
+    -webkit-mask-image:radial-gradient(ellipse at 100% 100%, #000 0%, transparent 72%);
+            mask-image:radial-gradient(ellipse at 100% 100%, #000 0%, transparent 72%);
+  }
+  .row { display:flex; align-items:center; gap:76px; position:relative; z-index:2; }
+  .mark { width:340px; height:340px; flex:none; }
+  h1 {
+    font-size:86px; font-weight:700; letter-spacing:-2.5px; color:#f2ecdf; line-height:1;
+  }
+  .rule {
+    width:520px; height:7px; margin:26px 0 24px; border-radius:3px;
+    background:repeating-linear-gradient(45deg,#f2ecdf 0 9px,#241d15 9px 18px);
+    opacity:.55;
+    -webkit-mask-image:linear-gradient(90deg,#000 0%,#000 45%,transparent 100%);
+            mask-image:linear-gradient(90deg,#000 0%,#000 45%,transparent 100%);
+  }
+  p.tag {
+    font-size:29px; color:#b9ab97; line-height:1.35; max-width:520px; font-weight:400;
+  }
+  .stats { margin-top:26px; font-size:22px; color:#e0704f; font-weight:600; letter-spacing:.2px; }
+  .stats span { color:#6b5c4d; font-weight:400; margin:0 10px; }
+  .url {
+    position:absolute; bottom:44px; left:0; right:0; text-align:center;
+    font-size:19px; color:#6b5c4d; letter-spacing:2.5px; text-transform:uppercase; z-index:2;
+  }
+</style>
+</head>
+<body>
+<div class="glow"></div>
+<div class="motif"></div>
+
+<div class="row">
+  <svg class="mark" viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+      <pattern id="mstr" width="22" height="22" patternTransform="rotate(45)" patternUnits="userSpaceOnUse">
+        <rect width="11" height="22" fill="#241d15"/>
+      </pattern>
+    </defs>
+    <g transform="translate(0,-4)">
+      <rect x="74" y="156" width="16" height="26" rx="8" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3"/>
+      <rect x="112" y="156" width="16" height="26" rx="8" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3"/>
+      <g transform="rotate(-24 46 88)">
+        <rect x="42" y="64" width="120" height="24" rx="10" fill="#f2ecdf"/>
+        <rect x="42" y="64" width="120" height="24" rx="10" fill="url(#mstr)"/>
+      </g>
+      <rect x="42" y="88" width="120" height="76" rx="14" fill="#241d15" stroke="#f2ecdf" stroke-width="3.5"/>
+      <rect x="42" y="88" width="120" height="20" rx="10" fill="#f2ecdf"/>
+      <rect x="42" y="88" width="120" height="20" rx="10" fill="url(#mstr)"/>
+      <rect x="24" y="116" width="24" height="14" rx="7" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3" transform="rotate(24 36 123)"/>
+      <rect x="156" y="116" width="24" height="14" rx="7" fill="#3a2f26" stroke="#f2ecdf" stroke-width="3" transform="rotate(-24 168 123)"/>
+      <circle cx="79" cy="132" r="13" fill="#f2ecdf"/>
+      <circle cx="123" cy="132" r="13" fill="#f2ecdf"/>
+      <circle cx="81" cy="133" r="5.5" fill="#241d15"/>
+      <circle cx="121" cy="133" r="5.5" fill="#241d15"/>
+      <circle cx="61" cy="146" r="5" fill="#e0704f" opacity=".85"/>
+      <circle cx="141" cy="146" r="5" fill="#e0704f" opacity=".85"/>
+      <path d="M93 148 Q101 155 109 148" stroke="#f2ecdf" stroke-width="4" stroke-linecap="round" fill="none"/>
+    </g>
+  </svg>
+
+  <div>
+    <h1>OpenMontage</h1>
+    <div class="rule"></div>
+    <p class="tag">The first open-source, agentic<br>video production system.</p>
+    <div class="stats">12 pipelines<span>·</span>100+ tools<span>·</span>700+ agent skills</div>
+  </div>
+</div>
+
+<div class="url">openmontage.video</div>
+</body>
+</html>