diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a1a9f6c26..67b38b2c6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -12,7 +12,7 @@ New here? Look for issues labeled
 
 1. **Fork** the repo and create your branch **from `dev`** (never `main` — `main` only
    receives release merges from `dev`).
-2. **Set up:** Node.js 20+ (CI runs on Node 24) and pnpm. The pnpm version is pinned
+2. **Set up:** Node.js 24+ (same as CI) and pnpm. The pnpm version is pinned
    via the `packageManager` field, so the easiest path is:
 
    ```bash
diff --git a/frontend/AGENTS.md b/frontend/AGENTS.md
index b0b9f8890..f7d9a184a 100644
--- a/frontend/AGENTS.md
+++ b/frontend/AGENTS.md
@@ -97,8 +97,10 @@ first-party tunnel `/api/monitoring` to beat ad blockers.
 **shadcn-vue first.** Check `components/ui/`, then the shadcn-vue docs for
 something to copy in; hand-rolled Tailwind only when neither fits. Keep when
 syncing upstream: `Spinner` + `ToolLoadingSkeleton` (project-specific),
-`toggle` / `toggle-group`'s deliberate `primary` pressed pair, and the
-overlay roots' shortcut suspension.
+`toggle` / `toggle-group`'s deliberate `primary` pressed pair, the overlay
+roots' shortcut suspension, and `select`'s trigger geometry — `py-1` plus a
+flex (not `-webkit-box` line-clamp) value span, because Safari shifts button
+content up ~2px once it overflows the trigger's content box.
 
 ### Design tokens
 
diff --git a/frontend/components/ConnectivityTest.vue b/frontend/components/ConnectivityTest.vue
index 38328a06c..4b3f47951 100644
--- a/frontend/components/ConnectivityTest.vue
+++ b/frontend/components/ConnectivityTest.vue
@@ -51,20 +51,20 @@
             <span class="text-base font-medium truncate">{{ test.name }}</span>
           </div>
           <!-- Status + ms. Multi mode pins these to the best round (see checkConnectivityHandler). -->
-          <div class="flex items-center justify-between gap-2">
-            <span class="flex items-center gap-1.5 text-base min-w-0">
+          <div class="flex items-center justify-between gap-2 text-sm md:text-base">
+            <span class="flex items-center gap-1.5 min-w-0">
               <span v-if="toneOf(test) === 'wait'" class="relative flex shrink-0">
                 <span class="absolute inline-flex size-2 rounded-full bg-info opacity-75 animate-ping"></span>
                 <span class="relative inline-flex size-2 rounded-full" :class="dotClass(toneOf(test))"></span>
               </span>
               <component v-else-if="statusFaceIcon(test)" :is="statusFaceIcon(test)" class="size-4 shrink-0"
                 :class="textClass(toneOf(test))" />
-              <span :class="textClass(toneOf(test))" class="font-mono whitespace-nowrap min-w-0">{{ test.status
+              <span :class="textClass(toneOf(test))" class="min-w-0 truncate" :title="test.status">{{ test.status
                 }}</span>
             </span>
-            <span v-if="test.time !== 0" class="text-base font-mono tabular-nums text-muted-foreground"
+            <span v-if="test.time !== 0" class="shrink-0 font-mono tabular-nums text-muted-foreground"
               :title="t('connectivity.minTestTime') + test.mintime + ' ms'">
-              {{ test.time }}<span class="ml-0.5 text-sm">ms</span>
+              {{ test.time }}<span class="ml-0.5 text-xs md:text-sm">ms</span>
             </span>
           </div>
           <!-- Multi-test per-round latency bars, all on one absolute scale
diff --git a/frontend/components/Nav.vue b/frontend/components/Nav.vue
index 1e43dbe43..cfaef073b 100644
--- a/frontend/components/Nav.vue
+++ b/frontend/components/Nav.vue
@@ -45,12 +45,12 @@
                 </NavigationMenuTrigger>
                 <NavigationMenuContent class="z-50">
                   <!-- Two-column grid on PC -->
-                  <ul class="relative grid grid-cols-2 gap-x-4 gap-y-0.5 min-w-[24rem]">
+                  <ul class="relative grid grid-cols-2 gap-x-4 gap-y-0.5 min-w-[28rem]">
                     <span aria-hidden="true"
                       class="pointer-events-none absolute inset-y-1 left-1/2 w-px -translate-x-1/2 bg-border"></span>
                     <li v-for="tool in advancedTools" :key="tool.slug">
                       <NavigationMenuLink as-child class="cursor-pointer">
-                        <button type="button" class="w-full truncate text-left" @click="openTool(tool.slug)">
+                        <button type="button" class="w-full text-left leading-snug" @click="openTool(tool.slug)">
                           {{ t(tool.titleKey) }}
                         </button>
                       </NavigationMenuLink>
@@ -203,7 +203,7 @@
     <!-- Mobile navigation drawer. Flex column so the link list scrolls instead
          of clipping on short screens when Advanced Tools is expanded. -->
     <Sheet v-if="isMobile" :open="isNavMenuOpen" @update:open="onNavMenuChange">
-      <SheetContent side="left" class="w-72 p-0 flex flex-col gap-0" :title="t('nav.Navigation')">
+      <SheetContent side="left" class="w-80 p-0 flex flex-col gap-0" :title="t('nav.Navigation')">
         <div class="flex shrink-0 items-center justify-between border-b px-4 py-3">
           <h5 class="m-0 text-base font-semibold">{{ t('nav.Navigation') }}</h5>
           <SheetClose />
@@ -224,7 +224,7 @@
               <CollapsibleContent>
                 <div class="my-0.5 ml-3 flex flex-col gap-0.5 border-l pl-3">
                   <button v-for="tool in advancedTools" :key="tool.slug" type="button"
-                    class="block w-full truncate rounded-md px-3 py-1.5 text-left text-sm text-muted-foreground transition-colors hover:bg-accent/50 hover:text-foreground"
+                    class="block w-full rounded-md px-3 py-1.5 text-left text-sm leading-snug text-muted-foreground transition-colors hover:bg-accent/50 hover:text-foreground"
                     @click="openTool(tool.slug)">
                     {{ t(tool.titleKey) }}
                   </button>
diff --git a/frontend/components/ui/select/SelectTrigger.vue b/frontend/components/ui/select/SelectTrigger.vue
index f8db2dd0e..2765d2413 100644
--- a/frontend/components/ui/select/SelectTrigger.vue
+++ b/frontend/components/ui/select/SelectTrigger.vue
@@ -8,7 +8,7 @@ defineProps({ class: { type: [String, Array, Object], default: undefined } });
 
 <template>
   <SelectTrigger
-    :class="cn('flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1', $props.class)"
+    :class="cn('flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm ring-offset-background placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:flex [&>span]:min-w-0 [&>span]:items-center [&>span]:overflow-hidden [&>span]:whitespace-nowrap', $props.class)"
   >
     <slot />
     <SelectIcon as-child>
diff --git a/frontend/components/ui/select/SelectValue.vue b/frontend/components/ui/select/SelectValue.vue
index b2db42511..35501ced6 100644
--- a/frontend/components/ui/select/SelectValue.vue
+++ b/frontend/components/ui/select/SelectValue.vue
@@ -5,7 +5,11 @@ defineProps({ placeholder: { type: String, default: undefined } });
 </script>
 
 <template>
-  <SelectValue :placeholder="placeholder">
-    <slot />
+  <!-- The trigger lays this span out as a flex row, so the default text needs
+       an element of its own to truncate against. -->
+  <SelectValue v-slot="{ selectedLabel, modelValue }" :placeholder="placeholder">
+    <slot :selected-label="selectedLabel" :model-value="modelValue">
+      <span class="truncate">{{ selectedLabel.length ? selectedLabel.join(', ') : placeholder }}</span>
+    </slot>
   </SelectValue>
 </template>
diff --git a/package.json b/package.json
index 21199480b..64a1a57bf 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,9 @@
   "version": "7.4.0",
   "type": "module",
   "packageManager": "pnpm@11.22.0",
+  "engines": {
+    "node": ">=24"
+  },
   "scripts": {
     "dev": "concurrently \"vite\" \"nodemon --import ./sentry-instrument.js backend-server.js\"",
     "build": "vite build",