CSS: migrate links.html static inline styles to classes

- lt-divider--unifi / lt-divider-label--unifi: replace hardcoded margin
  and cyan label color on the UniFi switch section divider
- lt-text-amber / lt-text-cyan on stat card icons and values (matches
  same migration done in index.html)
- lt-stats-grid--mb: margin-bottom:16px on the summary stats grid
- g-page-sub-aside: replaces margin-left:8px on the updated timestamp
  span in links and inspector page subtitle

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

static/style.css

@@ -143,8 +143,13 @@
   flex-shrink: 0;
 }
 
-/* ── Divider compact variant ─────────────────────────────────────── */
+/* ── Divider variants ────────────────────────────────────────────── */
 .lt-divider--compact { margin: 1rem 0 0.75rem; }
+.lt-divider--unifi   { margin: 20px 0 12px; }
+.lt-divider-label--unifi { color: var(--cyan); letter-spacing: .1em; }
+
+/* ── Stats grid spacing variant ──────────────────────────────────── */
+.lt-stats-grid--mb { margin-bottom: 16px; }
 
 /* ── Topology section collapse toggle ────────────────────────────── */
 .topo-collapse-btn {
@@ -213,6 +218,7 @@
 .events-filter-bar .lt-input-sm { width: 220px; }
 .sev-pills          { display: flex; gap: 4px; }
 .g-page-sub { font-size: .78em; color: var(--text-muted); margin-top: 4px; }
+.g-page-sub-aside { font-size: .78em; color: var(--text-muted); margin-left: 8px; }
 
 /* ── Badge severity color variants (used with lt-badge) ───────────── */
 .badge-critical { color: var(--red);    border-color: var(--red);    text-shadow: var(--glow-red); }