diff --git a/src/tools/text-to-styled-letters/text-to-styled-letters.constants.ts b/src/tools/text-to-styled-letters/text-to-styled-letters.constants.ts
index 64f18a77..9b1a2d4a 100644
--- a/src/tools/text-to-styled-letters/text-to-styled-letters.constants.ts
+++ b/src/tools/text-to-styled-letters/text-to-styled-letters.constants.ts
@@ -1,4 +1,65 @@
-export const styledLetters = {
+interface StyledLetterMap { [key: string]: string[] }
+
+export type StyleType =
+    | 'bold'
+    | 'italic'
+    | 'boldItalic'
+    | 'script'
+    | 'boldScript'
+    | 'fraktur'
+    | 'doubleStruck'
+    | 'sansSerif'
+    | 'sansSerifBold'
+    | 'sansSerifItalic'
+    | 'sansSerifBoldItalic'
+    | 'monospace';
+
+export const STYLE_INDEX: Record<StyleType, number> = {
+  bold: 0,
+  italic: 1,
+  boldItalic: 2,
+  script: 3,
+  boldScript: 4,
+  fraktur: 5,
+  doubleStruck: 6,
+  sansSerif: 7,
+  sansSerifBold: 8,
+  sansSerifItalic: 9,
+  sansSerifBoldItalic: 10,
+  monospace: 11,
+};
+
+export const DIGIT_STYLE_MAP: Record<StyleType, number | null> = {
+  bold: 0,
+  italic: null,
+  boldItalic: 0,
+  script: null,
+  boldScript: null,
+  fraktur: null,
+  doubleStruck: 1,
+  sansSerifBold: 3,
+  sansSerifBoldItalic: 3,
+  sansSerif: 2,
+  sansSerifItalic: 2,
+  monospace: 4,
+};
+
+export const GREEK_STYLE_MAP: Record<StyleType, number | null> = {
+  bold: 0,
+  italic: 1,
+  boldItalic: 2,
+  script: null,
+  boldScript: null,
+  fraktur: null,
+  doubleStruck: null,
+  sansSerifBold: 3,
+  sansSerifBoldItalic: 4,
+  sansSerif: null,
+  sansSerifItalic: 1,
+  monospace: null,
+};
+
+export const styledLetters: StyledLetterMap = {
   A: ['𝐀', '𝐴', '𝑨', '𝒜', '𝓐', '𝕬', '𝔸', '𝖠', '𝗔', '𝘈', '𝘼', '𝙰'],
   B: ['𝐁', '𝐵', '𝑩', 'ℬ', '𝓑', '𝕭', '𝔹', '𝖡', '𝗕', '𝘉', '𝘽', '𝙱'],
   C: ['𝐂', '𝐶', '𝑪', '𝒞', '𝓒', '𝕮', 'ℂ', '𝖢', '𝗖', '𝘊', '𝘾', '𝙲'],
@@ -54,7 +115,7 @@ export const styledLetters = {
   z: ['𝐳', '𝑧', '𝒛', '𝓏', '𝔃', '𝖟', '𝕫', '𝗓', '𝘇', '𝘻', '𝙯', '𝚣'],
 };
 
-export const styledDigits = {
+export const styledDigits: StyledLetterMap = {
   0: ['𝟎', '𝟘', '𝟢', '𝟬', '𝟶'],
   1: ['𝟏', '𝟙', '𝟣', '𝟭', '𝟷'],
   2: ['𝟐', '𝟚', '𝟤', '𝟮', '𝟸'],
@@ -67,7 +128,7 @@ export const styledDigits = {
   9: ['𝟗', '𝟡', '𝟫', '𝟵', '𝟿'],
 };
 
-export const styledGreek = {
+export const styledGreek: StyledLetterMap = {
   'Α': ['𝚨', '𝛢', '𝜜', '𝝖', '𝞐'], // Alpha
   'Β': ['𝚩', '𝛣', '𝜝', '𝝗', '𝞑'], // Beta
   'Γ': ['𝚪', '𝛤', '𝜞', '𝝘', '𝞒'], // Gamma
diff --git a/src/tools/text-to-styled-letters/text-to-styled-letters.service.ts b/src/tools/text-to-styled-letters/text-to-styled-letters.service.ts
index fefb9cc1..a2028ce5 100644
--- a/src/tools/text-to-styled-letters/text-to-styled-letters.service.ts
+++ b/src/tools/text-to-styled-letters/text-to-styled-letters.service.ts
@@ -1,56 +1,9 @@
-import { styledDigits, styledGreek, styledLetters } from './text-to-styled-letters.constants';
+import type { StyleType } from './text-to-styled-letters.constants';
+import { DIGIT_STYLE_MAP, GREEK_STYLE_MAP, STYLE_INDEX, styledDigits, styledGreek, styledLetters } from './text-to-styled-letters.constants';
 
 export { textToStyledLetters };
 export type { StyleType };
 
-// 样式类型定义
-type StyleType =
-    | 'bold' // 粗体
-    | 'italic' // 斜体
-    | 'boldItalic' // 粗斜体
-    | 'script' // 手写体
-    | 'boldScript' // 粗手写体
-    | 'fraktur' // 哥特体/Fraktur
-    | 'doubleStruck' // 双线体/黑板粗体
-    | 'sansSerif' // 无衬线
-    | 'sansSerifBold' // 无衬线粗体
-    | 'sansSerifItalic'// 无衬线斜体
-    | 'sansSerifBoldItalic' // 无衬线粗斜体
-    | 'monospace'; // 等宽
-
-// 样式索引映射
-const STYLE_INDEX: Record<StyleType, number> = {
-  bold: 0,
-  italic: 1,
-  boldItalic: 2,
-  script: 3,
-  boldScript: 4,
-  fraktur: 5,
-  doubleStruck: 6,
-  sansSerif: 7,
-  sansSerifBold: 8,
-  sansSerifItalic: 9,
-  sansSerifBoldItalic: 10,
-  monospace: 11,
-};
-
-// 希腊字母只有5种样式，需要特殊处理
-const GREEK_STYLE_MAP: Record<StyleType, number | null> = {
-  bold: 0,
-  italic: 1,
-  boldItalic: 2,
-  script: null, // 希腊字母无此样式
-  boldScript: null, // 希腊字母无此样式
-  fraktur: null, // 希腊字母无此样式
-  doubleStruck: null, // 希腊字母无此样式
-  sansSerifBold: 3, // 映射到 sans-serif bold
-  sansSerifBoldItalic: 4, // 映射到 sans-serif bold italic
-  // 以下映射到最接近的可用样式
-  sansSerif: 3, // 无 sans-serif regular，用 bold 代替
-  sansSerifItalic: 4, // 无 sans-serif italic，用 bold italic 代替
-  monospace: null, // 希腊字母无等宽
-};
-
 function textToStyledLetters({
   text,
   style,
@@ -59,43 +12,30 @@ function textToStyledLetters({
   style: StyleType
 }): string {
   const latinIndex = STYLE_INDEX[style];
+  const digitIndex = DIGIT_STYLE_MAP[style];
   const greekIndex = GREEK_STYLE_MAP[style];
 
+  const converters = [
+    { map: styledLetters, index: latinIndex },
+    { map: styledDigits, index: digitIndex },
+    { map: styledGreek, index: greekIndex },
+  ];
+
   let result = '';
 
   for (const char of text) {
-    let converted = false;
+    let styled: string | undefined;
 
-    // 尝试匹配拉丁字母（大写或小写）
-    if (styledLetters[char]) {
-      const styled = styledLetters[char][latinIndex];
-      if (styled) {
-        result += styled;
-        converted = true;
-      }
-    }
-    // 尝试匹配数字
-    else if (styledDigits[char]) {
-      // 数字只有7种样式（索引0-6），超出范围需要处理
-      const digitIndex = latinIndex <= 6 ? latinIndex : null;
-      if (digitIndex !== null && styledDigits[char][digitIndex]) {
-        result += styledDigits[char][digitIndex];
-        converted = true;
-      }
-    }
-    // 尝试匹配希腊字母
-    else if (styledGreek[char] && greekIndex !== null) {
-      const styled = styledGreek[char][greekIndex];
-      if (styled) {
-        result += styled;
-        converted = true;
+    for (const { map, index } of converters) {
+      if (index !== null) {
+        styled = map[char]?.[index];
+        if (styled) {
+          break;
+        }
       }
     }
 
-    // 无法转换，照抄原字符
-    if (!converted) {
-      result += char;
-    }
+    result += styled || char;
   }
 
   return result;
diff --git a/src/tools/text-to-styled-letters/text-to-styled-letters.vue b/src/tools/text-to-styled-letters/text-to-styled-letters.vue
index dae4be29..b428a002 100644
--- a/src/tools/text-to-styled-letters/text-to-styled-letters.vue
+++ b/src/tools/text-to-styled-letters/text-to-styled-letters.vue
@@ -7,18 +7,18 @@ const input = ref('');
 const selectedStyle = ref<StyleType>('bold');
 
 const styleOptions: { label: string; value: StyleType }[] = [
-  { label: 'Bold', value: 'bold' },
-  { label: 'Italic', value: 'italic' },
-  { label: 'Bold Italic', value: 'boldItalic' },
-  { label: 'Script', value: 'script' },
-  { label: 'Bold Script', value: 'boldScript' },
-  { label: 'Fraktur', value: 'fraktur' },
-  { label: 'Double-Struck', value: 'doubleStruck' },
-  { label: 'Sans-Serif', value: 'sansSerif' },
-  { label: 'Sans-Serif Bold', value: 'sansSerifBold' },
-  { label: 'Sans-Serif Italic', value: 'sansSerifItalic' },
-  { label: 'Sans-Serif Bold Italic', value: 'sansSerifBoldItalic' },
-  { label: 'Monospace', value: 'monospace' },
+  { label: '𝐛𝐨𝐥𝐝', value: 'bold' },
+  { label: '𝑖𝑡𝑎𝑙𝑖𝑐', value: 'italic' },
+  { label: '𝒃𝒐𝒍𝒅 𝒊𝒕𝒂𝒍𝒊𝒄', value: 'boldItalic' },
+  { label: '𝒮𝒸𝓇𝒾𝓅𝓉', value: 'script' },
+  { label: '𝓑𝓸𝓵𝓭 𝓢𝓬𝓻𝓲𝓹𝓽', value: 'boldScript' },
+  { label: '𝔉𝔯𝔞𝔨𝔱𝔲𝔯', value: 'fraktur' },
+  { label: '𝔻𝕠𝕦𝕓𝕝𝕖-𝕊𝕥𝕣𝕦𝕔𝕜', value: 'doubleStruck' },
+  { label: '𝖲𝖺𝗇𝗌-𝖲𝖾𝗋𝗂𝖿', value: 'sansSerif' },
+  { label: '𝗦𝗮𝗻𝘀-𝗦𝗲𝗿𝗶𝗳 𝗕𝗼𝗹𝗱', value: 'sansSerifBold' },
+  { label: '𝘚𝘢𝘯𝘴-𝘚𝘦𝘳𝘪𝘧 𝘐𝘵𝘢𝘭𝘪𝘤', value: 'sansSerifItalic' },
+  { label: '𝙎𝙖𝙣𝙨-𝙎𝙚𝙧𝙞𝙛 𝘽𝙤𝙡𝙙 𝙄𝙩𝙖𝙡𝙞𝙘', value: 'sansSerifBoldItalic' },
+  { label: '𝙼𝚘𝚗𝚘𝚜𝚙𝚊𝚌𝚎', value: 'monospace' },
 ];
 
 const styledText = computed(() =>