diff --git a/frontend/src/components/account/AccountUsageCell.vue b/frontend/src/components/account/AccountUsageCell.vue
index b893c1e801..67d7b165dc 100644
--- a/frontend/src/components/account/AccountUsageCell.vue
+++ b/frontend/src/components/account/AccountUsageCell.vue
@@ -348,7 +348,7 @@
       </div>
       <div v-else-if="usageInfo" class="space-y-1">
         <div v-if="grokEntitlementLabel" class="mb-0.5">
-          <span class="inline-block rounded bg-slate-100 px-1.5 py-0.5 text-[10px] font-medium text-slate-700 dark:bg-slate-800 dark:text-slate-300">
+          <span class="inline-block rounded bg-zinc-100 px-1.5 py-0.5 text-[10px] font-medium text-zinc-800 dark:bg-zinc-800 dark:text-zinc-200">
             {{ grokEntitlementLabel }}
           </span>
         </div>
diff --git a/frontend/src/components/account/CreateAccountModal.vue b/frontend/src/components/account/CreateAccountModal.vue
index d6cf0d807b..806f05598f 100644
--- a/frontend/src/components/account/CreateAccountModal.vue
+++ b/frontend/src/components/account/CreateAccountModal.vue
@@ -153,7 +153,7 @@
             :class="[
               'flex flex-1 items-center justify-center gap-2 rounded-md px-4 py-2.5 text-sm font-medium transition-all',
               form.platform === 'grok'
-                ? 'bg-white text-slate-700 shadow-sm dark:bg-dark-600 dark:text-slate-200'
+                ? 'bg-white text-zinc-900 shadow-sm dark:bg-dark-600 dark:text-zinc-100'
                 : 'text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-200'
             ]"
           >
@@ -362,15 +362,15 @@
             :class="[
               'flex items-center gap-3 rounded-lg border-2 p-3 text-left transition-all',
               accountCategory === 'oauth-based'
-                ? 'border-slate-500 bg-slate-50 dark:bg-slate-900/20'
-                : 'border-gray-200 hover:border-slate-300 dark:border-dark-600 dark:hover:border-slate-700'
+                ? 'border-zinc-800 bg-zinc-50 dark:bg-zinc-900/30'
+                : 'border-gray-200 hover:border-zinc-400 dark:border-dark-600 dark:hover:border-zinc-600'
             ]"
           >
             <div
               :class="[
                 'flex h-8 w-8 shrink-0 items-center justify-center rounded-lg',
                 accountCategory === 'oauth-based'
-                  ? 'bg-slate-700 text-white'
+                  ? 'bg-zinc-900 text-white'
                   : 'bg-gray-100 text-gray-500 dark:bg-dark-600 dark:text-gray-400'
               ]"
             >
diff --git a/frontend/src/components/admin/account/ReAuthAccountModal.vue b/frontend/src/components/admin/account/ReAuthAccountModal.vue
index 9db44acf68..e767ad89dc 100644
--- a/frontend/src/components/admin/account/ReAuthAccountModal.vue
+++ b/frontend/src/components/admin/account/ReAuthAccountModal.vue
@@ -21,7 +21,7 @@
                   : isAntigravity
                     ? 'from-purple-500 to-purple-600'
                     : isGrok
-                      ? 'from-slate-600 to-cyan-600'
+                      ? 'from-zinc-700 to-zinc-900'
                       : 'from-orange-500 to-orange-600'
             ]"
           >
diff --git a/frontend/src/components/common/GroupBadge.vue b/frontend/src/components/common/GroupBadge.vue
index 3303d90982..650e589eeb 100644
--- a/frontend/src/components/common/GroupBadge.vue
+++ b/frontend/src/components/common/GroupBadge.vue
@@ -124,6 +124,12 @@ const labelClass = computed(() => {
   if (props.platform === 'gemini') {
     return `${base} bg-blue-200/60 text-blue-800 dark:bg-blue-800/40 dark:text-blue-300`
   }
+  if (props.platform === 'antigravity') {
+    return `${base} bg-purple-200/60 text-purple-800 dark:bg-purple-800/40 dark:text-purple-300`
+  }
+  if (props.platform === 'grok') {
+    return `${base} bg-zinc-300/70 text-zinc-800 dark:bg-zinc-700/60 dark:text-zinc-200`
+  }
   return `${base} bg-violet-200/60 text-violet-800 dark:bg-violet-800/40 dark:text-violet-300`
 })
 
@@ -145,6 +151,16 @@ const badgeClass = computed(() => {
       ? 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400'
       : 'bg-sky-50 text-sky-700 dark:bg-sky-900/20 dark:text-sky-400'
   }
+  if (props.platform === 'antigravity') {
+    return isSubscription.value
+      ? 'bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-400'
+      : 'bg-fuchsia-50 text-fuchsia-700 dark:bg-fuchsia-900/20 dark:text-fuchsia-400'
+  }
+  if (props.platform === 'grok') {
+    return isSubscription.value
+      ? 'bg-zinc-200 text-zinc-800 dark:bg-zinc-700 dark:text-zinc-100'
+      : 'bg-zinc-100 text-zinc-700 dark:bg-zinc-800 dark:text-zinc-200'
+  }
   // Fallback: original colors
   return isSubscription.value
     ? 'bg-violet-100 text-violet-700 dark:bg-violet-900/30 dark:text-violet-400'
diff --git a/frontend/src/components/common/PlatformIcon.vue b/frontend/src/components/common/PlatformIcon.vue
index 29c45201f8..e950b007ef 100644
--- a/frontend/src/components/common/PlatformIcon.vue
+++ b/frontend/src/components/common/PlatformIcon.vue
@@ -19,11 +19,11 @@
   <svg v-else-if="platform === 'antigravity'" :class="sizeClass" viewBox="0 0 24 24" fill="currentColor">
     <path d="M19.35 10.04C18.67 6.59 15.64 4 12 4 9.11 4 6.6 5.64 5.35 8.04 2.34 8.36 0 10.91 0 14c0 3.31 2.69 6 6 6h13c2.76 0 5-2.24 5-5 0-2.64-2.05-4.78-4.65-4.96z" />
   </svg>
-  <!-- Grok/xAI logo mark -->
-  <svg v-else-if="platform === 'grok'" :class="sizeClass" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
-    <path stroke-linecap="round" stroke-linejoin="round" d="M4 18 18 4" />
-    <path stroke-linecap="round" stroke-linejoin="round" d="M8 5h11v11" />
-    <path stroke-linecap="round" stroke-linejoin="round" d="M5 6l13 13" />
+  <!-- Grok / xAI logo mark (stylized angular X) -->
+  <svg v-else-if="platform === 'grok'" :class="sizeClass" viewBox="0 0 24 24" fill="currentColor">
+    <path
+      d="M9.27 15.29l7.978-5.897c.391-.29.95-.177 1.137.272.98 2.369.542 5.215-1.41 7.169-1.951 1.954-4.667 2.382-7.149 1.406l-2.711 1.257c3.889 2.661 8.611 2.003 11.562-.953 2.341-2.344 3.066-5.539 2.388-8.42l.006.007c-.983-4.232.242-5.924 2.75-9.383.06-.082.12-.164.179-.248l-3.301 3.305v-.01L9.267 15.292M7.623 16.723c-2.792-2.67-2.31-6.801.071-9.184 1.761-1.763 4.647-2.483 7.166-1.425l2.705-1.25a7.808 7.808 0 00-1.829-1A8.975 8.975 0 005.984 5.83c-2.533 2.536-3.33 6.436-1.962 9.764 1.022 2.487-.653 4.246-2.34 6.022-.599.63-1.199 1.259-1.682 1.925l7.62-6.815"
+    />
   </svg>
   <!-- Fallback: generic platform icon -->
   <svg v-else :class="sizeClass" fill="currentColor" viewBox="0 0 24 24">
diff --git a/frontend/src/i18n/locales/en.ts b/frontend/src/i18n/locales/en.ts
index eec916cfb5..3469d3fff2 100644
--- a/frontend/src/i18n/locales/en.ts
+++ b/frontend/src/i18n/locales/en.ts
@@ -3183,6 +3183,7 @@ export default {
         openai: 'OpenAI',
         gemini: 'Gemini',
         antigravity: 'Antigravity',
+        grok: 'Grok',
       },
       types: {
         oauth: 'OAuth',
diff --git a/frontend/src/i18n/locales/zh.ts b/frontend/src/i18n/locales/zh.ts
index 7780147ae4..3fa1e1371d 100644
--- a/frontend/src/i18n/locales/zh.ts
+++ b/frontend/src/i18n/locales/zh.ts
@@ -2267,6 +2267,7 @@ export default {
         openai: 'OpenAI',
         gemini: 'Gemini',
         antigravity: 'Antigravity',
+        grok: 'Grok',
       },
       saving: '保存中...',
       noGroups: '暂无分组',
diff --git a/frontend/src/utils/platformColors.ts b/frontend/src/utils/platformColors.ts
index 670c440dd6..aeaca7194e 100644
--- a/frontend/src/utils/platformColors.ts
+++ b/frontend/src/utils/platformColors.ts
@@ -13,7 +13,7 @@ const BADGE: Record<Platform, string> = {
   openai: 'bg-green-500/10 text-green-600 border-green-500/30 dark:text-green-400',
   antigravity: 'bg-purple-500/10 text-purple-600 border-purple-500/30 dark:text-purple-400',
   gemini: 'bg-blue-500/10 text-blue-600 border-blue-500/30 dark:text-blue-400',
-  grok: 'bg-slate-500/10 text-slate-600 border-slate-500/30 dark:text-slate-300',
+  grok: 'bg-zinc-800/10 text-zinc-800 border-zinc-800/30 dark:bg-zinc-500/10 dark:text-zinc-200 dark:border-zinc-500/30',
 }
 const BADGE_DEFAULT = 'bg-slate-500/10 text-slate-600 border-slate-500/30 dark:text-slate-400'
 
@@ -23,7 +23,7 @@ const BADGE_LIGHT: Record<Platform, string> = {
   openai: 'bg-green-500/10 text-green-600 dark:bg-green-500/10 dark:text-green-300',
   antigravity: 'bg-purple-500/10 text-purple-600 dark:bg-purple-500/10 dark:text-purple-300',
   gemini: 'bg-blue-500/10 text-blue-600 dark:bg-blue-500/10 dark:text-blue-300',
-  grok: 'bg-slate-500/10 text-slate-600 dark:bg-slate-500/10 dark:text-slate-300',
+  grok: 'bg-zinc-800/10 text-zinc-800 dark:bg-zinc-500/10 dark:text-zinc-200',
 }
 
 // ── Border ──────────────────────────────────────────────────────────
@@ -32,7 +32,7 @@ const BORDER: Record<Platform, string> = {
   openai: 'border-green-500/20 dark:border-green-500/20',
   antigravity: 'border-purple-500/20 dark:border-purple-500/20',
   gemini: 'border-blue-500/20 dark:border-blue-500/20',
-  grok: 'border-slate-500/20 dark:border-slate-500/20',
+  grok: 'border-zinc-800/20 dark:border-zinc-500/20',
 }
 const BORDER_DEFAULT = 'border-gray-200 dark:border-dark-700'
 
@@ -42,7 +42,7 @@ const ACCENT_BAR: Record<Platform, string> = {
   openai: 'bg-gradient-to-r from-emerald-400 to-emerald-500',
   antigravity: 'bg-gradient-to-r from-purple-400 to-purple-500',
   gemini: 'bg-gradient-to-r from-blue-400 to-blue-500',
-  grok: 'bg-gradient-to-r from-slate-500 to-cyan-500',
+  grok: 'bg-gradient-to-r from-zinc-700 to-zinc-900',
 }
 const ACCENT_BAR_DEFAULT = 'bg-gradient-to-r from-primary-400 to-primary-500'
 
@@ -52,7 +52,7 @@ const TEXT: Record<Platform, string> = {
   openai: 'text-emerald-600 dark:text-emerald-400',
   antigravity: 'text-purple-600 dark:text-purple-400',
   gemini: 'text-blue-600 dark:text-blue-400',
-  grok: 'text-slate-700 dark:text-slate-300',
+  grok: 'text-zinc-800 dark:text-zinc-200',
 }
 const TEXT_DEFAULT = 'text-primary-600 dark:text-primary-400'
 
@@ -62,7 +62,7 @@ const ICON: Record<Platform, string> = {
   openai: 'text-emerald-500 dark:text-emerald-400',
   antigravity: 'text-purple-500 dark:text-purple-400',
   gemini: 'text-blue-500 dark:text-blue-400',
-  grok: 'text-slate-500 dark:text-slate-300',
+  grok: 'text-zinc-800 dark:text-zinc-200',
 }
 const ICON_DEFAULT = 'text-primary-500 dark:text-primary-400'
 
@@ -72,7 +72,7 @@ const BUTTON: Record<Platform, string> = {
   openai: 'bg-green-600 text-white hover:bg-green-700 active:bg-green-800 dark:bg-green-600/80 dark:hover:bg-green-600',
   antigravity: 'bg-purple-500 text-white hover:bg-purple-600 active:bg-purple-700 dark:bg-purple-500/80 dark:hover:bg-purple-500',
   gemini: 'bg-blue-500 text-white hover:bg-blue-600 active:bg-blue-700 dark:bg-blue-500/80 dark:hover:bg-blue-500',
-  grok: 'bg-slate-700 text-white hover:bg-slate-800 active:bg-slate-900 dark:bg-slate-600 dark:hover:bg-slate-500',
+  grok: 'bg-zinc-800 text-white hover:bg-zinc-900 active:bg-black dark:bg-zinc-700 dark:hover:bg-zinc-600',
 }
 const BUTTON_DEFAULT = 'bg-primary-500 text-white hover:bg-primary-600 dark:bg-primary-600 dark:hover:bg-primary-500'
 
@@ -82,7 +82,7 @@ const DISCOUNT: Record<Platform, string> = {
   openai: 'bg-emerald-100 text-emerald-700 dark:bg-emerald-900/40 dark:text-emerald-300',
   antigravity: 'bg-purple-100 text-purple-700 dark:bg-purple-900/40 dark:text-purple-300',
   gemini: 'bg-blue-100 text-blue-700 dark:bg-blue-900/40 dark:text-blue-300',
-  grok: 'bg-slate-100 text-slate-700 dark:bg-slate-800 dark:text-slate-300',
+  grok: 'bg-zinc-100 text-zinc-800 dark:bg-zinc-800 dark:text-zinc-200',
 }
 const DISCOUNT_DEFAULT = 'bg-red-100 text-red-700 dark:bg-red-900/40 dark:text-red-300'
 
@@ -92,7 +92,7 @@ const GRADIENT: Record<Platform, string> = {
   openai: 'from-emerald-500 to-emerald-600',
   antigravity: 'from-purple-500 to-purple-600',
   gemini: 'from-blue-500 to-blue-600',
-  grok: 'from-slate-600 to-cyan-600',
+  grok: 'from-zinc-700 to-zinc-900',
 }
 const GRADIENT_DEFAULT = 'from-primary-500 to-primary-600'
 
@@ -102,7 +102,7 @@ const GRADIENT_TEXT: Record<Platform, string> = {
   openai: 'text-emerald-100',
   antigravity: 'text-purple-100',
   gemini: 'text-blue-100',
-  grok: 'text-slate-100',
+  grok: 'text-zinc-100',
 }
 const GRADIENT_TEXT_DEFAULT = 'text-primary-100'
 
@@ -111,7 +111,7 @@ const GRADIENT_SUBTEXT: Record<Platform, string> = {
   openai: 'text-emerald-200',
   antigravity: 'text-purple-200',
   gemini: 'text-blue-200',
-  grok: 'text-slate-200',
+  grok: 'text-zinc-300',
 }
 const GRADIENT_SUBTEXT_DEFAULT = 'text-primary-200'
 
diff --git a/frontend/src/views/admin/GroupsView.vue b/frontend/src/views/admin/GroupsView.vue
index dcee3a3671..e18194313f 100644
--- a/frontend/src/views/admin/GroupsView.vue
+++ b/frontend/src/views/admin/GroupsView.vue
@@ -106,7 +106,9 @@
                     ? 'bg-emerald-100 text-emerald-700 dark:bg-emerald-900/30 dark:text-emerald-400'
                     : value === 'antigravity'
                       ? 'bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-400'
-                      : 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400',
+                      : value === 'grok'
+                        ? 'bg-zinc-200 text-zinc-800 dark:bg-zinc-700 dark:text-zinc-100'
+                        : 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400',
               ]"
             >
               <PlatformIcon :platform="value" size="xs" />
@@ -2974,7 +2976,9 @@
                         ? 'bg-emerald-100 text-emerald-700 dark:bg-emerald-900/30 dark:text-emerald-400'
                         : group.platform === 'antigravity'
                           ? 'bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-400'
-                          : 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400',
+                          : group.platform === 'grok'
+                            ? 'bg-zinc-200 text-zinc-800 dark:bg-zinc-700 dark:text-zinc-100'
+                            : 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400',
                   ]"
                 >
                   {{ t("admin.groups.platforms." + group.platform) }}