diff --git a/.ai/lessons.md b/.ai/lessons.md
index 885025a087..d9365ef354 100644
--- a/.ai/lessons.md
+++ b/.ai/lessons.md
@@ -135,3 +135,6 @@
 
 ## Session writes are last-writer-wins
 - Laravel saves the whole session payload at the end of every request, and pages run concurrent `wire:poll` requests. A value that one request changes can be overwritten by a request that started earlier. `KeepConcurrentTeamSwitch` protects `currentTeam`; protect any new session value that changes mid-session the same way, or keep it out of the session.
+
+## Keep `:has()` off page-wide ancestors
+- A `:has()` on `html`, `body`, `.app-shell`, or a sibling of `<main>` (for example `html:has(.x) .y`) makes Chrome restyle the page on every DOM change. Chart libraries read layout many times per render, so one ApexCharts render took ~400 ms and blocked navigation. Use a class set by the Blade layout instead, and keep `:has()` on small, local subjects.
diff --git a/resources/css/app.css b/resources/css/app.css
index 38849b6e79..0674b14c48 100644
--- a/resources/css/app.css
+++ b/resources/css/app.css
@@ -6441,12 +6441,14 @@ html.dark.is-scrolled:not([data-nav-style="floating"]) .app-topbar > div:not(.ap
         background-image: none;
     }
 
-    html:not([data-nav-style="floating"]):has(.app-main-full :is([data-ec-root], .cv-root)) .app-topbar {
+    /* A layout class, not html:has(): an html-level :has() restyles the whole
+       page on every DOM change, which made chart renders take seconds. */
+    html:not([data-nav-style="floating"]) .app-shell-canvas > .app-topbar {
         background-color: transparent;
         backdrop-filter: none;
     }
 
-    html:not([data-nav-style="floating"]):has(.app-main-full :is([data-ec-root], .cv-root)) .app-topbar > div:not(.app-topbar-brand) {
+    html:not([data-nav-style="floating"]) .app-shell-canvas > .app-topbar > div:not(.app-topbar-brand) {
         border-bottom-color: transparent;
     }
 }
diff --git a/resources/views/layouts/app.blade.php b/resources/views/layouts/app.blade.php
index a6807574eb..355618d79f 100644
--- a/resources/views/layouts/app.blade.php
+++ b/resources/views/layouts/app.blade.php
@@ -34,7 +34,7 @@
             }
         }" @open-global-search.window="open = false" @page-width-changed.window="pageWidth = $event.detail"
             :style="{ '--sidebar-w': collapsed ? '4rem' : '14rem' }" x-cloak
-            @class(['app-shell dark:text-inherit text-black', 'flex h-dvh flex-col' => $fullBleed ?? false])>
+            @class(['app-shell dark:text-inherit text-black', 'app-shell-canvas flex h-dvh flex-col' => $fullBleed ?? false])>
             {{-- ============ DESKTOP TOP BAR ============ --}}
             <header
                 x-data="{ resourceActionsOpen: false }"
diff --git a/resources/views/livewire/traffic/_requests-chart.blade.php b/resources/views/livewire/traffic/_requests-chart.blade.php
index 07c5870888..c06224bfe0 100644
--- a/resources/views/livewire/traffic/_requests-chart.blade.php
+++ b/resources/views/livewire/traffic/_requests-chart.blade.php
@@ -42,7 +42,8 @@
         if (!el) { return; }
         const cssVar = name => getComputedStyle(document.documentElement).getPropertyValue(name).trim();
         const accent = () => cssVar('--chart-status-3xx') || '#3b82f6';
-        const gridColor = () => cssVar('--chart-geo-empty') || 'rgba(128,128,128,0.15)';
+        const compactNumber = new Intl.NumberFormat(undefined, { notation: 'compact', maximumFractionDigits: 1 });
+        const gridColor = () =>cssVar('--chart-geo-empty') || 'rgba(128,128,128,0.15)';
 
         // `24h` buckets are hourly, `7d`/`30d` daily — pick a matching axis/tooltip format.
         const timeFormat = range => (range === '24h' ? 'HH:mm' : 'dd MMM');
@@ -84,7 +85,8 @@
                     minWidth: 28,
                     maxWidth: 28,
                     style: { colors: textColor },
-                    formatter: value => Math.round(value).toLocaleString(),
+                    // Compact (1K, 1.2M) so large counts fit the fixed label width.
+                    formatter: value => compactNumber.format(Math.round(value)),
                 },
             },
             grid: {