diff --git a/public/frontend/assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2 b/public/frontend/assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2
new file mode 100644
index 0000000..cb063de
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diff --git a/public/frontend/assets/fonts/SourceHanSansSC-Regular-gb2312.woff2 b/public/frontend/assets/fonts/SourceHanSansSC-Regular-gb2312.woff2
new file mode 100644
index 0000000..c0cf0fe
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diff --git a/public/frontend/assets/fonts/SourceHanSerifSC-SemiBold-gb2312.woff2 b/public/frontend/assets/fonts/SourceHanSerifSC-SemiBold-gb2312.woff2
new file mode 100644
index 0000000..c6326f3
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diff --git a/public/frontend/event-site.html b/public/frontend/event-site.html
index 743fed4..7074f5f 100644
--- a/public/frontend/event-site.html
+++ b/public/frontend/event-site.html
@@ -6,7 +6,38 @@
   <script src="assets/prototype-scale.js?v=20260825-home"></script>
   <meta name="description" content="首届沪苏协同新兴产业青年科创大赛官方网站，聚焦光通信全产业链创新。">
   <title>首届沪苏协同新兴产业青年科创大赛</title>
+  <link rel="preload" as="font" type="font/woff2" href="assets/fonts/SourceHanSansSC-Regular-gb2312.woff2?v=20260828" crossorigin>
+  <link rel="preload" as="font" type="font/woff2" href="assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2?v=20260828" crossorigin>
+  <link rel="preload" as="font" type="font/woff2" href="assets/fonts/SourceHanSerifSC-SemiBold-gb2312.woff2?v=20260828" crossorigin>
   <style>
+    @font-face {
+      font-family: "Source Han Sans SC";
+      src: url("assets/fonts/SourceHanSansSC-Regular-gb2312.woff2?v=20260828") format("woff2");
+      font-weight: 400;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: "Source Han Sans SC";
+      src: url("assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2?v=20260828") format("woff2");
+      font-weight: 700;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: "Source Han Sans SC";
+      src: url("assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2?v=20260828") format("woff2");
+      font-weight: 900;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: "Source Han Serif SC";
+      src: url("assets/fonts/SourceHanSerifSC-SemiBold-gb2312.woff2?v=20260828") format("woff2");
+      font-weight: 600 900;
+      font-style: normal;
+      font-display: swap;
+    }
     :root {
       --blue: #0094dc;
       --blue-dark: #0078b8;
@@ -28,8 +59,8 @@
       --white: #fff;
       --wrap: min(1280px, calc(100% - 64px));
       --ease: cubic-bezier(.2,.8,.2,1);
-      --font-sans: "黑体";
-      --font-serif: "宋体";
+      --font-sans: "Source Han Sans SC", "黑体";
+      --font-serif: "Source Han Serif SC", "宋体";
       --font-small: var(--font-sans);
       --font-small-size: 14px;
       --font-en: var(--font-sans);
@@ -4536,7 +4567,7 @@
       padding: 0;
       font-family: var(--font-serif) !important;
       font-size: clamp(42px,3.8vw,58px) !important;
-      font-weight: 650 !important;
+      font-weight: 600 !important;
       line-height: 1.05 !important;
       letter-spacing: -.055em !important;
       text-indent: 0;
@@ -5358,7 +5389,7 @@
       white-space: nowrap !important;
     }
 
-    /* 标题宋体；其余黑体且不加粗 */
+    /* 标题思源宋体 SemiBold；其余思源黑体 Regular */
     body,
     body * {
       font-weight: 400 !important;
@@ -5381,7 +5412,7 @@
     .roadmap .step p strong,
     .award-card h3 {
       font-family: var(--font-serif) !important;
-      font-weight: 900 !important;
+      font-weight: 600 !important;
     }
     .hero-organizers,
     .hero-organizers dt,