diff --git a/public/frontend/assets/event-site-fonts.css b/public/frontend/assets/event-site-fonts.css
new file mode 100644
index 0000000..e91840e
--- /dev/null
+++ b/public/frontend/assets/event-site-fonts.css
@@ -0,0 +1,28 @@
+@font-face {
+  font-family: "Event Heiti";
+  src: url("fonts/SourceHanSansSC-Regular-gb2312.woff2?v=20260828") format("woff2");
+  font-weight: 400 900;
+  font-style: normal;
+  font-display: swap;
+}
+@font-face {
+  font-family: "Event Songti";
+  src: url("fonts/SourceHanSerifSC-Regular-gb2312.woff2?v=20260828") format("woff2");
+  font-weight: 400;
+  font-style: normal;
+  font-display: swap;
+}
+@font-face {
+  font-family: "Event Songti";
+  src: url("fonts/SourceHanSerifSC-SemiBold-gb2312.woff2?v=20260828") format("woff2");
+  font-weight: 600;
+  font-style: normal;
+  font-display: swap;
+}
+@font-face {
+  font-family: "Event Songti";
+  src: url("fonts/SourceHanSerifSC-Bold-gb2312.woff2?v=20260828") format("woff2");
+  font-weight: 700 900;
+  font-style: normal;
+  font-display: swap;
+}
diff --git a/public/frontend/event-site-en.html b/public/frontend/event-site-en.html
index a4c6fb9..4004b2b 100644
--- a/public/frontend/event-site-en.html
+++ b/public/frontend/event-site-en.html
@@ -12,32 +12,28 @@
   <style>
     @font-face {
       font-family: "Event Heiti";
-      src: local("Heiti SC"), local("STHeiti"), local("PingFang SC"), local("黑体"), local("SimHei"),
-           url("assets/fonts/SourceHanSansSC-Regular-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Heiti SC"), local("STHeiti"), local("PingFang SC"), local("黑体"), local("SimHei");
       font-weight: 400 900;
       font-style: normal;
       font-display: swap;
     }
     @font-face {
       font-family: "Event Songti";
-      src: local("Songti SC"), local("STSong"), local("宋体"), local("SimSun"), local("NSimSun"),
-           url("assets/fonts/SourceHanSerifSC-Regular-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Songti SC"), local("STSong"), local("宋体"), local("SimSun"), local("NSimSun");
       font-weight: 400;
       font-style: normal;
       font-display: swap;
     }
     @font-face {
       font-family: "Event Songti";
-      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun"),
-           url("assets/fonts/SourceHanSerifSC-SemiBold-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun");
       font-weight: 600;
       font-style: normal;
       font-display: swap;
     }
     @font-face {
       font-family: "Event Songti";
-      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun"),
-           url("assets/fonts/SourceHanSerifSC-Bold-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun");
       font-weight: 700 900;
       font-style: normal;
       font-display: swap;
@@ -6143,6 +6139,37 @@
         }
       }, 120);
     });
+
+    (function () {
+      function assetBase() {
+        var node = document.querySelector("script[src*='prototype-scale']");
+        if (node && node.src) return node.src.replace(/prototype-scale\.js.*$/, "");
+        return "/frontend/assets/";
+      }
+      function hasLocalFont(names) {
+        var ctx = document.createElement("canvas").getContext("2d");
+        if (!ctx) return false;
+        var sample = "沪苏汉字國體";
+        ctx.font = "72px Courier New, monospace";
+        var fallback = ctx.measureText(sample).width;
+        for (var i = 0; i < names.length; i++) {
+          ctx.font = '72px "' + names[i] + '", Courier New, monospace';
+          if (Math.abs(ctx.measureText(sample).width - fallback) > 1) return true;
+        }
+        return false;
+      }
+      function loadWebfontsIfNeeded() {
+        var hasHeiti = hasLocalFont(["Heiti SC", "STHeiti", "PingFang SC", "黑体", "SimHei"]);
+        var hasSongti = hasLocalFont(["Songti SC", "STSong", "STSongti-SC-Bold", "宋体", "SimSun", "NSimSun"]);
+        if (hasHeiti && hasSongti) return;
+        var fonts = document.createElement("link");
+        fonts.rel = "stylesheet";
+        fonts.href = assetBase() + "event-site-fonts.css?v=20260828";
+        document.head.appendChild(fonts);
+      }
+      if (document.readyState === "complete") window.setTimeout(loadWebfontsIfNeeded, 60);
+      else window.addEventListener("load", function () { window.setTimeout(loadWebfontsIfNeeded, 60); });
+    }());
   </script>
   <script>
 
diff --git a/public/frontend/event-site.html b/public/frontend/event-site.html
index 044d2c5..5b779f7 100644
--- a/public/frontend/event-site.html
+++ b/public/frontend/event-site.html
@@ -12,32 +12,28 @@
   <style>
     @font-face {
       font-family: "Event Heiti";
-      src: local("Heiti SC"), local("STHeiti"), local("PingFang SC"), local("PingFangSC-Regular"), local("黑体"), local("SimHei"),
-           url("assets/fonts/SourceHanSansSC-Regular-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Heiti SC"), local("STHeiti"), local("PingFang SC"), local("PingFangSC-Regular"), local("黑体"), local("SimHei");
       font-weight: 400 900;
       font-style: normal;
       font-display: swap;
     }
     @font-face {
       font-family: "Event Songti";
-      src: local("Songti SC"), local("STSongti-SC-Regular"), local("STSong"), local("宋体"), local("SimSun"), local("NSimSun"),
-           url("assets/fonts/SourceHanSerifSC-Regular-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Songti SC"), local("STSongti-SC-Regular"), local("STSong"), local("宋体"), local("SimSun"), local("NSimSun");
       font-weight: 400;
       font-style: normal;
       font-display: swap;
     }
     @font-face {
       font-family: "Event Songti";
-      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun"),
-           url("assets/fonts/SourceHanSerifSC-SemiBold-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun");
       font-weight: 600;
       font-style: normal;
       font-display: swap;
     }
     @font-face {
       font-family: "Event Songti";
-      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun"),
-           url("assets/fonts/SourceHanSerifSC-Bold-gb2312.woff2?v=20260828") format("woff2");
+      src: local("Songti SC Bold"), local("STSongti-SC-Bold"), local("宋体"), local("SimSun"), local("NSimSun");
       font-weight: 700 900;
       font-style: normal;
       font-display: swap;
@@ -5928,6 +5924,18 @@
         if (node && node.src) return node.src.replace(/prototype-scale\.js.*$/, "");
         return "/frontend/assets/";
       }
+      function hasLocalFont(names) {
+        var ctx = document.createElement("canvas").getContext("2d");
+        if (!ctx) return false;
+        var sample = "沪苏汉字國體";
+        ctx.font = "72px Courier New, monospace";
+        var fallback = ctx.measureText(sample).width;
+        for (var i = 0; i < names.length; i++) {
+          ctx.font = '72px "' + names[i] + '", Courier New, monospace';
+          if (Math.abs(ctx.measureText(sample).width - fallback) > 1) return true;
+        }
+        return false;
+      }
       function loadLate() {
         if (done) return;
         done = true;
@@ -5945,6 +5953,15 @@
           photo.src = base + "generated/hero-photonic-youth-blue-purple-balanced-v7-sharp-trails-4k.jpg?v=20260828c";
           photonic.appendChild(photo);
         }
+
+        var hasHeiti = hasLocalFont(["Heiti SC", "STHeiti", "PingFang SC", "PingFangSC-Regular", "黑体", "SimHei"]);
+        var hasSongti = hasLocalFont(["Songti SC", "STSongti-SC-Regular", "STSong", "STSongti-SC-Bold", "宋体", "SimSun", "NSimSun"]);
+        if (!hasHeiti || !hasSongti) {
+          var fonts = document.createElement("link");
+          fonts.rel = "stylesheet";
+          fonts.href = base + "event-site-fonts.css?v=20260828";
+          document.head.appendChild(fonts);
+        }
       }
       function startLate() { window.setTimeout(loadLate, 60); }
       if (document.readyState === "complete") startLate();