总览北京时间改为更易读的纯文本样式，日期格式与拉取时间一致。

Co-authored-by: Cursor <cursoragent@cursor.com>

static/hub.css

@@ -101,32 +101,48 @@ body.page-login .main {
 .overview-bj-clock {
   margin-left: auto;
   display: inline-flex;
-  align-items: baseline;
+  align-items: center;
-  gap: 8px;
+  gap: 10px;
-  padding: 6px 12px;
+  padding: 0;
-  border-radius: 999px;
+  border: 0;
-  border: 1px solid rgba(56, 189, 248, 0.22);
+  background: transparent;
-  background: rgba(8, 14, 24, 0.72);
+  box-shadow: none;
-  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
 }
 .overview-bj-label {
-  font-size: 0.72rem;
+  font-size: 0.82rem;
-  letter-spacing: 0.12em;
+  letter-spacing: 0.02em;
-  text-transform: uppercase;
+  text-transform: none;
-  color: var(--accent);
+  color: var(--muted);
-  font-weight: 600;
+  font-weight: 500;
+  white-space: nowrap;
+}
+.overview-bj-label::after {
+  content: "";
+  display: inline-block;
+  width: 1px;
+  height: 12px;
+  margin-left: 10px;
+  vertical-align: -1px;
+  background: rgba(56, 189, 248, 0.35);
 }
 .overview-bj-time {
-  font-family: var(--font-display);
+  font-family: var(--font);
-  font-size: 0.95rem;
+  font-size: 1.05rem;
   font-weight: 600;
-  letter-spacing: 0.04em;
+  letter-spacing: 0.02em;
   color: var(--text);
   font-variant-numeric: tabular-nums;
+  white-space: nowrap;
 }
 @media (max-width: 720px) {
   .page-head { flex-wrap: wrap; }
-  .overview-bj-clock { margin-left: 0; order: 3; width: 100%; justify-content: center; }
+  .overview-bj-clock {
+    margin-left: 0;
+    order: 3;
+    width: 100%;
+    justify-content: flex-start;
+    padding-top: 2px;
+  }
 }
 .muted { color: var(--muted); font-size: 0.9rem; }
 .flash {

static/hub.js

@@ -333,7 +333,7 @@
 
   function formatBeijingNow() {
     try {
-      return new Intl.DateTimeFormat("zh-CN", {
+      const parts = new Intl.DateTimeFormat("en-CA", {
         timeZone: "Asia/Shanghai",
         year: "numeric",
         month: "2-digit",
@@ -342,7 +342,26 @@
         minute: "2-digit",
         second: "2-digit",
         hour12: false,
-      }).format(new Date());
+      }).formatToParts(new Date());
+      const get = function (type) {
+        const hit = parts.find(function (p) {
+          return p.type === type;
+        });
+        return hit ? hit.value : "";
+      };
+      return (
+        get("year") +
+        "-" +
+        get("month") +
+        "-" +
+        get("day") +
+        " " +
+        get("hour") +
+        ":" +
+        get("minute") +
+        ":" +
+        get("second")
+      );
     } catch (e) {
       const d = new Date();
       const utc = d.getTime() + d.getTimezoneOffset() * 60000;
@@ -352,9 +371,9 @@
       };
       return (
         bj.getFullYear() +
-        "/" +
+        "-" +
         p(bj.getMonth() + 1) +
-        "/" +
+        "-" +
         p(bj.getDate()) +
         " " +
         p(bj.getHours()) +
@@ -369,7 +388,9 @@
   function tickBeijingClock() {
     const el = document.getElementById("overview-bj-time");
     if (!el) return;
-    el.textContent = formatBeijingNow();
+    const text = formatBeijingNow();
+    el.textContent = text;
+    el.setAttribute("datetime", text.replace(" ", "T") + "+08:00");
   }
 
   function boot() {

templates/dashboard.html

@@ -3,9 +3,9 @@
 {% block body %}
 <section class="page-head">
   <h1>期权持仓总览</h1>
-  <div class="overview-bj-clock" id="overview-bj-clock" title="北京时间">
+  <div class="overview-bj-clock" id="overview-bj-clock" title="Asia/Shanghai">
     <span class="overview-bj-label">北京时间</span>
-    <span class="overview-bj-time" id="overview-bj-time">--:--:--</span>
+    <time class="overview-bj-time" id="overview-bj-time" datetime="">--</time>
   </div>
   <button type="button" class="btn" id="btn-refresh">刷新</button>
 </section>
@@ -13,6 +13,6 @@
 <div id="overview-grid"></div>
 {% endblock %}
 {% block scripts %}
-<script src="{{ url_for('static', filename='hub.js') }}?v=2"></script>
+<script src="{{ url_for('static', filename='hub.js') }}?v=3"></script>
 <script>HubOverview.boot();</script>
 {% endblock %}