diff --git a/web/default/src/components/config-drawer.tsx b/web/default/src/components/config-drawer.tsx
index b1c806bf..10273678 100644
--- a/web/default/src/components/config-drawer.tsx
+++ b/web/default/src/components/config-drawer.tsx
@@ -490,6 +490,7 @@ function ScaleConfig() {
     { value: 'sm', label: t('Compact'), rows: 4, rowGap: '3px' },
     { value: 'default', label: t('Default'), rows: 3, rowGap: '6px' },
     { value: 'lg', label: t('Comfortable'), rows: 2, rowGap: '10px' },
+    { value: 'xl', label: t('Super Large'), rows: 1, rowGap: '14px' },
   ]
   return (
     <div>
@@ -501,7 +502,7 @@ function ScaleConfig() {
       <Radio
         value={customization.scale}
         onValueChange={(v) => setScale(v as ThemeScale)}
-        className='grid w-full grid-cols-3 gap-4'
+        className='grid w-full grid-cols-4 gap-3'
         aria-label={t('Select interface density')}
       >
         {scaleOptions.map((option) => (
diff --git a/web/default/src/features/usage-logs/components/columns/column-helpers.tsx b/web/default/src/features/usage-logs/components/columns/column-helpers.tsx
index df3b140e..22cd2139 100644
--- a/web/default/src/features/usage-logs/components/columns/column-helpers.tsx
+++ b/web/default/src/features/usage-logs/components/columns/column-helpers.tsx
@@ -183,6 +183,7 @@ export function createChannelColumn<T>(config: {
           autoColor={String(channelId)}
           copyText={String(channelId)}
           size='sm'
+          showDot={false}
           className='font-mono'
         />
       )
diff --git a/web/default/src/features/usage-logs/components/columns/common-logs-columns.tsx b/web/default/src/features/usage-logs/components/columns/common-logs-columns.tsx
index 1d15c9c7..0a0732a9 100644
--- a/web/default/src/features/usage-logs/components/columns/common-logs-columns.tsx
+++ b/web/default/src/features/usage-logs/components/columns/common-logs-columns.tsx
@@ -332,6 +332,7 @@ export function useCommonLogsColumns(isAdmin: boolean): ColumnDef<UsageLog>[] {
                       autoColor={String(log.channel)}
                       copyText={String(log.channel)}
                       size='sm'
+                      showDot={false}
                       className='font-mono'
                     />
                     {affinity && (
@@ -554,7 +555,7 @@ export function useCommonLogsColumns(isAdmin: boolean): ColumnDef<UsageLog>[] {
             ? log.completion_tokens / useTime
             : null
         const timeVariant = getResponseTimeColor(useTime, log.completion_tokens)
-        const frtVariant = frt ? getFirstResponseTimeColor(frt / 1000) : null
+        const frtVariant = frt ? getFirstResponseTimeColor(frt / 1000) : 'neutral'
 
         const timingBgMap: Record<string, string> = {
           success:
diff --git a/web/default/src/i18n/locales/en.json b/web/default/src/i18n/locales/en.json
index 04486dfc..1db3f68f 100644
--- a/web/default/src/i18n/locales/en.json
+++ b/web/default/src/i18n/locales/en.json
@@ -3019,6 +3019,7 @@
     "preset.lavender-dream": "Lavender Dream",
     "preset.ocean-breeze": "Ocean Breeze",
     "preset.rose-garden": "Rose Garden",
+    "preset.simple-large": "Simple Large-font",
     "preset.sunset-glow": "Sunset Glow",
     "preset.underground": "Underground",
     "Press Enter or comma to add tags": "Press Enter or comma to add tags",
@@ -3784,6 +3785,7 @@
     "SunoAPI": "SunoAPI",
     "Sunset Glow": "Sunset Glow",
     "Super Admin": "Super Admin",
+    "Super Large": "Super Large",
     "Support for high concurrency with automatic load balancing": "Support for high concurrency with automatic load balancing",
     "Supported Applications": "Supported Applications",
     "Supported Imagine Models": "Supported Imagine Models",
diff --git a/web/default/src/i18n/locales/fr.json b/web/default/src/i18n/locales/fr.json
index 2bada212..18c8b0b8 100644
--- a/web/default/src/i18n/locales/fr.json
+++ b/web/default/src/i18n/locales/fr.json
@@ -3019,6 +3019,7 @@
     "preset.lavender-dream": "Rêve de lavande",
     "preset.ocean-breeze": "Brise océane",
     "preset.rose-garden": "Roseraie",
+    "preset.simple-large": "Simple & Grands Caractères",
     "preset.sunset-glow": "Lueur du couchant",
     "preset.underground": "Souterrain",
     "Press Enter or comma to add tags": "Appuyez sur Entrée ou sur la virgule pour ajouter des tags",
@@ -3784,6 +3785,7 @@
     "SunoAPI": "SunoAPI",
     "Sunset Glow": "Lueur du couchant",
     "Super Admin": "Super Administrateur",
+    "Super Large": "Très grand",
     "Support for high concurrency with automatic load balancing": "Prise en charge de la haute concurrence avec équilibrage de charge automatique",
     "Supported Applications": "Applications prises en charge",
     "Supported Imagine Models": "Modèles Imagine pris en charge",
diff --git a/web/default/src/i18n/locales/ja.json b/web/default/src/i18n/locales/ja.json
index 2c5f35ec..a8eb2383 100644
--- a/web/default/src/i18n/locales/ja.json
+++ b/web/default/src/i18n/locales/ja.json
@@ -3019,6 +3019,7 @@
     "preset.lavender-dream": "ラベンダードリーム",
     "preset.ocean-breeze": "オーシャンブリーズ",
     "preset.rose-garden": "ローズガーデン",
+    "preset.simple-large": "特大フォント・シンプル",
     "preset.sunset-glow": "サンセットグロウ",
     "preset.underground": "アンダーグラウンド",
     "Press Enter or comma to add tags": "Enterキーまたはコンマを押してタグを追加",
@@ -3784,6 +3785,7 @@
     "SunoAPI": "SunoAPI",
     "Sunset Glow": "サンセットグロウ",
     "Super Admin": "スーパー管理者",
+    "Super Large": "極大",
     "Support for high concurrency with automatic load balancing": "自動ロードバランシングによる高並行性のサポート",
     "Supported Applications": "サポートされているアプリケーション",
     "Supported Imagine Models": "対応Imagineモデル",
diff --git a/web/default/src/i18n/locales/ru.json b/web/default/src/i18n/locales/ru.json
index 6e3bb805..57e7d529 100644
--- a/web/default/src/i18n/locales/ru.json
+++ b/web/default/src/i18n/locales/ru.json
@@ -3019,6 +3019,7 @@
     "preset.lavender-dream": "Лавандовый сон",
     "preset.ocean-breeze": "Морской бриз",
     "preset.rose-garden": "Розовый сад",
+    "preset.simple-large": "Простая крупная",
     "preset.sunset-glow": "Закатное сияние",
     "preset.underground": "Подполье",
     "Press Enter or comma to add tags": "Нажмите Enter или запятую, чтобы добавить теги",
@@ -3784,6 +3785,7 @@
     "SunoAPI": "SunoAPI",
     "Sunset Glow": "Закатное сияние",
     "Super Admin": "Суперадмин",
+    "Super Large": "Очень крупная",
     "Support for high concurrency with automatic load balancing": "Поддержка высокой конкурентности с автоматической балансировкой нагрузки",
     "Supported Applications": "Поддерживаемые приложения",
     "Supported Imagine Models": "Поддерживаемые модели Imagine",
diff --git a/web/default/src/i18n/locales/vi.json b/web/default/src/i18n/locales/vi.json
index 23441a9c..f829ebd5 100644
--- a/web/default/src/i18n/locales/vi.json
+++ b/web/default/src/i18n/locales/vi.json
@@ -3019,6 +3019,7 @@
     "preset.lavender-dream": "Giấc mơ oải hương",
     "preset.ocean-breeze": "Gió biển",
     "preset.rose-garden": "Vườn hồng",
+    "preset.simple-large": "Chữ lớn & Đơn giản",
     "preset.sunset-glow": "Hoàng hôn",
     "preset.underground": "Bóng đêm",
     "Press Enter or comma to add tags": "Nhấn Enter hoặc dấu phẩy để thêm thẻ",
@@ -3784,6 +3785,7 @@
     "SunoAPI": "SunoAPI",
     "Sunset Glow": "Hoàng hôn",
     "Super Admin": "Siêu Quản trị viên",
+    "Super Large": "Rất lớn",
     "Support for high concurrency with automatic load balancing": "Hỗ trợ đồng thời cao với cân bằng tải tự động",
     "Supported Applications": "Ứng dụng được hỗ trợ",
     "Supported Imagine Models": "Mô hình Imagine được hỗ trợ",
diff --git a/web/default/src/i18n/locales/zh.json b/web/default/src/i18n/locales/zh.json
index c567f97f..b930666a 100644
--- a/web/default/src/i18n/locales/zh.json
+++ b/web/default/src/i18n/locales/zh.json
@@ -3019,6 +3019,7 @@
     "preset.lavender-dream": "薰衣草梦",
     "preset.ocean-breeze": "海风",
     "preset.rose-garden": "玫瑰花园",
+    "preset.simple-large": "超大字体简易",
     "preset.sunset-glow": "日落霞光",
     "preset.underground": "暗夜",
     "Press Enter or comma to add tags": "按 Enter 或逗号添加标签",
@@ -3784,6 +3785,7 @@
     "SunoAPI": "SunoAPI",
     "Sunset Glow": "日落霞光",
     "Super Admin": "超级管理员",
+    "Super Large": "超大",
     "Support for high concurrency with automatic load balancing": "支持高并发和自动负载均衡",
     "Supported Applications": "常用应用支持",
     "Supported Imagine Models": "支持的 Imagine 模型",
diff --git a/web/default/src/lib/theme-customization.ts b/web/default/src/lib/theme-customization.ts
index c107ed1f..b6680338 100644
--- a/web/default/src/lib/theme-customization.ts
+++ b/web/default/src/lib/theme-customization.ts
@@ -37,6 +37,11 @@ export const THEME_PRESETS = [
     name: 'Anthropic',
     swatches: ['oklch(0.984 0.005 95)', 'oklch(0.685 0.142 38)'],
   },
+  {
+    value: 'simple-large',
+    name: 'Simple Large-font',
+    swatches: ['oklch(0.15 0 0)', 'oklch(0.99 0 0)'],
+  },
   {
     value: 'underground',
     name: 'Underground',
@@ -76,7 +81,7 @@ export const THEME_PRESETS = [
 
 export type ThemePreset = (typeof THEME_PRESETS)[number]['value']
 export type ThemeRadius = 'default' | 'none' | 'sm' | 'md' | 'lg' | 'xl'
-export type ThemeScale = 'default' | 'sm' | 'lg'
+export type ThemeScale = 'default' | 'sm' | 'lg' | 'xl'
 export type ContentLayout = 'full' | 'centered'
 
 /**
@@ -141,6 +146,7 @@ export const THEME_SCALE_VALUES: ReadonlySet<ThemeScale> = new Set([
   'default',
   'sm',
   'lg',
+  'xl',
 ])
 
 export const CONTENT_LAYOUT_VALUES: ReadonlySet<ContentLayout> = new Set([
diff --git a/web/default/src/styles/theme-presets.css b/web/default/src/styles/theme-presets.css
index 11be0720..dc237392 100644
--- a/web/default/src/styles/theme-presets.css
+++ b/web/default/src/styles/theme-presets.css
@@ -291,23 +291,136 @@ For commercial licensing, please contact support@quantumnous.com
   --sidebar-ring: oklch(0.6359 0.1699 307.95);
 }
 
+/* ── Simple Large-font ────────────────────────────────────────────────── */
+[data-theme-preset='simple-large'] {
+  --background: oklch(0.99 0 0);
+  --foreground: oklch(0.15 0 0);
+  --card: oklch(1 0 0);
+  --card-foreground: oklch(0.15 0 0);
+  --popover: oklch(1 0 0);
+  --popover-foreground: oklch(0.15 0 0);
+
+  --primary: oklch(0.22 0 0);
+  --primary-foreground: oklch(1 0 0);
+  --secondary: oklch(0.93 0 0);
+  --secondary-foreground: oklch(0.15 0 0);
+  --muted: oklch(0.95 0 0);
+  --muted-foreground: oklch(0.36 0 0);
+  --accent: oklch(0.91 0 0);
+  --accent-foreground: oklch(0.15 0 0);
+
+  --destructive: oklch(0.55 0.2 28);
+  --destructive-foreground: oklch(1 0 0);
+  --success: oklch(0.45 0.12 145);
+  --success-foreground: oklch(1 0 0);
+  --warning: oklch(0.72 0.14 75);
+  --warning-foreground: oklch(0.15 0 0);
+  --info: oklch(0.48 0.13 250);
+  --info-foreground: oklch(1 0 0);
+  --neutral: oklch(0.36 0 0);
+  --neutral-foreground: oklch(1 0 0);
+
+  --border: oklch(0.82 0 0);
+  --input: oklch(0.82 0 0);
+  --ring: oklch(0.22 0 0);
+
+  --chart-1: oklch(0.22 0 0);
+  --chart-2: oklch(0.45 0.12 145);
+  --chart-3: oklch(0.48 0.13 250);
+  --chart-4: oklch(0.72 0.14 75);
+  --chart-5: oklch(0.55 0.2 28);
+
+  --sidebar: oklch(0.96 0 0);
+  --sidebar-foreground: oklch(0.15 0 0);
+  --sidebar-primary: oklch(0.22 0 0);
+  --sidebar-primary-foreground: oklch(1 0 0);
+  --sidebar-accent: oklch(0.9 0 0);
+  --sidebar-accent-foreground: oklch(0.15 0 0);
+  --sidebar-border: oklch(0.82 0 0);
+  --sidebar-ring: oklch(0.22 0 0);
+
+  --skeleton-base: oklch(0.9 0 0);
+  --skeleton-highlight: oklch(0.97 0 0);
+
+  --radius: 0.5rem;
+  --text-xs: 0.9rem;
+  --text-sm: 1rem;
+  --text-base: 1.125rem;
+  --text-lg: 1.25rem;
+  --text-xl: 1.45rem;
+  --text-2xl: 1.75rem;
+  --text-3xl: 2.15rem;
+  --spacing: 0.3rem;
+}
+.dark [data-theme-preset='simple-large'] {
+  --background: oklch(0.12 0 0);
+  --foreground: oklch(0.98 0 0);
+  --card: oklch(0.18 0 0);
+  --card-foreground: oklch(0.98 0 0);
+  --popover: oklch(0.2 0 0);
+  --popover-foreground: oklch(0.98 0 0);
+
+  --primary: oklch(0.94 0 0);
+  --primary-foreground: oklch(0.12 0 0);
+  --secondary: oklch(0.24 0 0);
+  --secondary-foreground: oklch(0.98 0 0);
+  --muted: oklch(0.24 0 0);
+  --muted-foreground: oklch(0.82 0 0);
+  --accent: oklch(0.3 0 0);
+  --accent-foreground: oklch(0.98 0 0);
+
+  --destructive: oklch(0.68 0.19 25);
+  --destructive-foreground: oklch(0.98 0 0);
+  --success: oklch(0.72 0.13 145);
+  --success-foreground: oklch(0.12 0 0);
+  --warning: oklch(0.82 0.13 75);
+  --warning-foreground: oklch(0.12 0 0);
+  --info: oklch(0.72 0.12 250);
+  --info-foreground: oklch(0.12 0 0);
+  --neutral: oklch(0.82 0 0);
+  --neutral-foreground: oklch(0.12 0 0);
+
+  --border: oklch(1 0 0 / 18%);
+  --input: oklch(1 0 0 / 24%);
+  --ring: oklch(0.94 0 0);
+
+  --chart-1: oklch(0.94 0 0);
+  --chart-2: oklch(0.72 0.13 145);
+  --chart-3: oklch(0.72 0.12 250);
+  --chart-4: oklch(0.82 0.13 75);
+  --chart-5: oklch(0.68 0.19 25);
+
+  --sidebar: oklch(0.16 0 0);
+  --sidebar-foreground: oklch(0.98 0 0);
+  --sidebar-primary: oklch(0.94 0 0);
+  --sidebar-primary-foreground: oklch(0.12 0 0);
+  --sidebar-accent: oklch(0.28 0 0);
+  --sidebar-accent-foreground: oklch(0.98 0 0);
+  --sidebar-border: oklch(1 0 0 / 18%);
+  --sidebar-ring: oklch(0.94 0 0);
+
+  --skeleton-base: oklch(0.24 0 0);
+  --skeleton-highlight: oklch(0.34 0 0);
+}
+
 /* ── Semantic surface bridge ──────────────────────────────────────────── */
 /* Color presets should tint the surfaces most components actually use, not
  * only primary buttons. These derived tokens keep the app theme-aware without
  * duplicating per-component dark-mode overrides.
  *
  * NOTE: `:not()` contributes its argument's specificity, so this selector
- * resolves to (0,2,0). Presets that define bespoke surfaces below need to
+ * resolves to (0,3,0). Presets that define bespoke surfaces below need to
  * either match that specificity or opt out here — the latter is cleaner.
  *
  * Opt-outs:
  *   - `default`: keeps neutral surfaces from :root.
  *   - `anthropic`: warm cream surfaces are a brand choice, NOT a primary-mix
  *     derivation (the Anthropic system deliberately uses warm neutrals for
- *     cards/borders rather than tinting them with the clay accent). */
+ *     cards/borders rather than tinting them with the clay accent).
+ *   - `simple-large`: keeps intentionally neutral, high-contrast surfaces. */
 [data-theme-preset]:not([data-theme-preset='default']):not(
     [data-theme-preset='anthropic']
-  ) {
+  ):not([data-theme-preset='simple-large']) {
   --card: color-mix(in oklch, var(--primary) 3%, var(--background));
   --popover: color-mix(in oklch, var(--primary) 5%, var(--background));
   --muted: color-mix(in oklch, var(--primary) 7%, var(--background));
@@ -332,7 +445,7 @@ For commercial licensing, please contact support@quantumnous.com
 .dark
   [data-theme-preset]:not([data-theme-preset='default']):not(
     [data-theme-preset='anthropic']
-  ) {
+  ):not([data-theme-preset='simple-large']) {
   --card: color-mix(in oklch, var(--primary) 8%, var(--background));
   --popover: color-mix(in oklch, var(--primary) 12%, var(--background));
   --muted: color-mix(in oklch, var(--primary) 12%, var(--background));
@@ -362,7 +475,7 @@ For commercial licensing, please contact support@quantumnous.com
  *
  * Anthropic is opted out of the semantic surface bridge above so these
  * bespoke warm-neutral surface tokens win the cascade. Without the opt-out,
- * the bridge selector (specificity 0,2,0 because of `:not()`) would override
+ * the bridge selector (specificity 0,3,0 because of `:not()`) would override
  * this block (specificity 0,1,0) and tint every surface with the clay
  * accent — producing the peach/pink look that doesn't match Anthropic.
  *
@@ -574,7 +687,7 @@ For commercial licensing, please contact support@quantumnous.com
 }
 
 /* ── Density scale ────────────────────────────────────────────────────── */
-/* `sm` = compact UI; `lg` = comfortable. Default (no attribute) keeps Tailwind defaults. */
+/* `sm` = compact UI; `lg` = comfortable; `xl` = extra readable. Default keeps Tailwind defaults. */
 [data-theme-scale='sm'] {
   --text-xs: 0.7rem;
   --text-sm: 0.78rem;
@@ -595,6 +708,16 @@ For commercial licensing, please contact support@quantumnous.com
   --text-3xl: 2rem;
   --spacing: 0.28rem;
 }
+[data-theme-scale='xl'] {
+  --text-xs: 0.9rem;
+  --text-sm: 1rem;
+  --text-base: 1.125rem;
+  --text-lg: 1.25rem;
+  --text-xl: 1.45rem;
+  --text-2xl: 1.75rem;
+  --text-3xl: 2.15rem;
+  --spacing: 0.3rem;
+}
 
 /* ── Content layout ───────────────────────────────────────────────────── */
 /* `centered` clamps inset content to a comfortable reading width on large screens.