diff --git a/public/frontend/assets/fonts/SourceHanSansSC-Medium-gb2312.woff2 b/public/frontend/assets/fonts/SourceHanSansSC-Medium-gb2312.woff2
new file mode 100644
index 0000000..e2ed2c4
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diff --git a/public/frontend/assets/fonts/SourceHanSerifSC-Regular-gb2312.woff2 b/public/frontend/assets/fonts/SourceHanSerifSC-Regular-gb2312.woff2
new file mode 100644
index 0000000..f0f0fcb
Binary files /dev/null and b/public/frontend/assets/fonts/SourceHanSerifSC-Regular-gb2312.woff2 differ
diff --git a/public/frontend/event-site.html b/public/frontend/event-site.html
index 1a54af3..dbd8334 100644
--- a/public/frontend/event-site.html
+++ b/public/frontend/event-site.html
@@ -7,12 +7,14 @@
   <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-Medium-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-Regular-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: "Event Heiti";
-      src: local("Heiti SC"), local("Heiti SC Light"), local("STHeiti"), local("STHeiti-Light"),
+      src: local("PingFang SC"), local("PingFangSC-Regular"), local("Heiti SC"),
            url("assets/fonts/SourceHanSansSC-Regular-gb2312.woff2?v=20260828") format("woff2");
       font-weight: 400;
       font-style: normal;
@@ -20,7 +22,23 @@
     }
     @font-face {
       font-family: "Event Heiti";
-      src: local("Heiti SC Medium"), local("STHeiti-Medium"),
+      src: local("PingFang SC Medium"), local("PingFangSC-Medium"),
+           url("assets/fonts/SourceHanSansSC-Medium-gb2312.woff2?v=20260828") format("woff2");
+      font-weight: 500;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: "Event Heiti";
+      src: local("PingFang SC Semibold"), local("PingFangSC-Semibold"),
+           url("assets/fonts/SourceHanSansSC-Medium-gb2312.woff2?v=20260828") format("woff2");
+      font-weight: 600;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: "Event Heiti";
+      src: local("PingFang SC Semibold"), local("PingFangSC-Semibold"),
            url("assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2?v=20260828") format("woff2");
       font-weight: 700;
       font-style: normal;
@@ -28,7 +46,7 @@
     }
     @font-face {
       font-family: "Event Heiti";
-      src: local("Heiti SC Medium"), local("STHeiti-Medium"),
+      src: local("PingFang SC Semibold"), local("PingFangSC-Semibold"),
            url("assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2?v=20260828") format("woff2");
       font-weight: 900;
       font-style: normal;
@@ -36,7 +54,15 @@
     }
     @font-face {
       font-family: "Event Songti";
-      src: local("Songti SC"), local("Songti SC Bold"), local("STSong"), local("STSongti-SC-Bold"),
+      src: local("Songti SC"), local("STSong"),
+           url("assets/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: local("Songti SC Bold"), local("STSongti-SC-Bold"),
            url("assets/fonts/SourceHanSerifSC-SemiBold-gb2312.woff2?v=20260828") format("woff2");
       font-weight: 600 900;
       font-style: normal;
@@ -223,11 +249,11 @@
       filter: none;
     }
     .hero-actions { position: absolute; z-index: 8; bottom: 31px; left: 50%; display: grid; grid-template-columns: repeat(2,79.2px); gap: 34.4px; width: max-content; margin: 0; padding: 0; transform: translateX(-50%); }
-    .hero-organizers { position: relative; display: grid; grid-template-columns: 1fr; gap: 9px; width: 100%; margin: 34px 0 0; padding: 0; background: none; border: 0; clip-path: none; backdrop-filter: none; font-family: var(--font-sans); font-kerning: normal; text-align: left; text-rendering: optimizeLegibility; -webkit-text-stroke: 0; paint-order: normal; }
-    .hero-org-row { position: relative; display: grid; grid-template-columns: 68px minmax(0,1fr); gap: 0; margin: 0; font-size: 13px; line-height: 1.38; text-align: left; text-shadow: 0 1px 3px rgba(0,10,42,.82), 0 0 8px rgba(126,225,255,.28); }
+    .hero-organizers { position: relative; display: grid; grid-template-columns: 1fr; gap: 9px; width: 100%; margin: 34px 0 0; padding: 0; background: none; border: 0; clip-path: none; backdrop-filter: none; font-family: var(--font-sans); text-align: left; -webkit-text-stroke: 0; paint-order: normal; }
+    .hero-org-row { position: relative; display: grid; grid-template-columns: max-content minmax(0,1fr); gap: 0 8px; margin: 0; font-size: 13px; line-height: 1.38; text-align: left; text-shadow: 0 2px 12px rgba(0,10,48,.72); }
     .hero-org-row:nth-child(3), .hero-org-row:nth-child(4), .hero-org-row:nth-child(5) { grid-column: auto; }
-    .hero-org-row dt { color: #effcff; font-weight: 800; white-space: nowrap; text-align: left; letter-spacing: .075em; }
-    .hero-org-row dd { margin: 0; color: #f8fdff; font-weight: 550; text-align: left; letter-spacing: .018em; }
+    .hero-org-row dt { color: #effcff; white-space: nowrap; text-align: left; }
+    .hero-org-row dd { margin: 0; color: #f8fdff; text-align: left; }
     .hero-primary {
       position: relative;
       z-index: 1;
@@ -5393,7 +5419,7 @@
       white-space: nowrap !important;
     }
 
-    /* 仅五大标题用思源宋体；其余思源黑体 */
+    /* 大标题思源宋体 SemiBold；导航、单位与正文统一苹方 */
     body,
     body * {
       font-weight: 400 !important;
@@ -5417,21 +5443,53 @@
     .tracks-summary strong,
     .roadmap .step h3,
     .roadmap .step p strong,
-    .award-card h3,
-    .hero-primary,
+    .hero-primary {
+      font-family: var(--font-sans) !important;
+      font-weight: 500 !important;
+    }
     .audience-project-copy,
     .audience-type p,
     .audience-tracks-layout .track-card p,
     .roadmap .step p,
-    .award-card p,
-    .awards-summary,
+    .awards-summary {
+      font-family: var(--font-sans) !important;
+    }
+    .nav,
+    .nav a {
+      font-family: var(--font-sans) !important;
+      font-weight: 500 !important;
+      letter-spacing: 0 !important;
+    }
     .hero-organizers,
     .hero-organizers dt,
     .hero-organizers dd {
       font-family: var(--font-sans) !important;
+      font-weight: 400 !important;
+      letter-spacing: 0 !important;
+    }
+    .language-switch {
+      font-family: var(--font-sans) !important;
+      font-weight: 400 !important;
+    }
+    .award-card,
+    .award-card small,
+    .award-card h3,
+    .award-card p,
+    .awards .award-card,
+    .awards .award-card * {
+      font-family: var(--font-sans) !important;
+    }
+    .awards .award-card h3 {
+      font-family: var(--font-sans) !important;
+      font-weight: 500 !important;
+      letter-spacing: 0 !important;
+    }
+    .awards .award-card small,
+    .awards .award-card p {
+      font-family: var(--font-sans) !important;
+      font-weight: 400 !important;
+      letter-spacing: .02em !important;
     }
-    .language-switch,
-    [lang="en"],
     .matched-section-label,
     .audience-eyebrow,
     .tracks-kicker,