diff --git a/lib/common/static/instance_theme.css b/lib/common/static/instance_theme.css
index 90e3fdb..26ba58c 100644
--- a/lib/common/static/instance_theme.css
+++ b/lib/common/static/instance_theme.css
@@ -4083,6 +4083,90 @@ html[data-theme="light"] .pos-pnl-loss {
   font-weight: 600 !important;
 }
 
+/* 期权持仓 · 亮色主题对比度 */
+html[data-theme="light"] .options-page-wrap .opt-pos-card .pos-label,
+html[data-theme="light"] .options-page-wrap .opt-pos-card .pos-meta,
+html[data-theme="light"] .options-page-wrap .opt-pos-card .pos-meta-item {
+  color: #334155 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-pos-card .pos-meta-item::after {
+  color: #94a3b8 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-pos-card .pos-value {
+  color: #0f172a !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-bid-plain {
+  color: #1e3a52 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-expiry-cd {
+  color: #004d6e !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-expiry-cd--urgent {
+  color: #9a6200 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-expiry-cd--expired {
+  color: #64748b !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-pos-tab:not(.active) {
+  color: #334155 !important;
+  border-color: #b8c8d8 !important;
+  background: #fff !important;
+}
+
+html[data-theme="light"] .options-page-wrap .options-pos-head h2,
+html[data-theme="light"] .options-page-wrap .options-pos-card-wrap h2 {
+  color: #0f172a !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule {
+  border: 1px solid #b8c8d8 !important;
+  background: #eef3f8 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule summary {
+  color: #0f172a !important;
+  background: #e2eaf2 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule summary::after {
+  background: rgba(0, 95, 140, 0.12) !important;
+  color: #004d6e !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule[open] summary {
+  background: #dce6f0 !important;
+  border-bottom-color: #b8c8d8 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule-body {
+  color: #334155 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule-body p {
+  color: #1e293b !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule-body li {
+  color: #334155 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .opt-close-rule-body code {
+  color: #142232 !important;
+  background: #fff !important;
+  border: 1px solid #c8d4e0 !important;
+}
+
+html[data-theme="light"] .options-page-wrap .pos-empty {
+  color: #475569 !important;
+}
+
 html[data-theme="light"] .order-preview-profit {
   color: #087a50 !important;
 }
diff --git a/lib/instance/templates/embed_shell.html b/lib/instance/templates/embed_shell.html
index 33daa3d..ea23b29 100644
--- a/lib/instance/templates/embed_shell.html
+++ b/lib/instance/templates/embed_shell.html
@@ -7,7 +7,7 @@
     <link rel="stylesheet" href="/static/instance_theme_early.css?v=4">
     <link rel="stylesheet" href="/static/account_risk_badge.css?v=4">
     <link rel="stylesheet" href="/static/instance_page.css?v=6">
-    <link rel="stylesheet" href="/static/instance_theme.css?v=78">
+    <link rel="stylesheet" href="/static/instance_theme.css?v=79">
     <script src="/static/account_risk_badge.js?v=4"></script>
     <meta name="theme-color" content="#0b0d14">
     <title>{{ exchange_display }} · 加密货币 | 交易监控复盘系统</title>
diff --git a/lib/instance/templates/index.html b/lib/instance/templates/index.html
index 2a1b2ce..8b29f30 100644
--- a/lib/instance/templates/index.html
+++ b/lib/instance/templates/index.html
@@ -17,7 +17,7 @@
     <link rel="manifest" href="/static/icons/manifest.webmanifest">
     <title>{{ exchange_display }} · 加密货币 | 交易监控复盘系统</title>
     <link rel="stylesheet" href="/static/instance_page.css?v=3">
-    <link rel="stylesheet" href="/static/instance_theme.css?v=78">
+    <link rel="stylesheet" href="/static/instance_theme.css?v=79">
 
 </head>
 <body