diff --git a/go.mod b/go.mod
index 193ee48..2fdcc2a 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@ require (
 	github.com/charmbracelet/bubbles v0.18.0
 	github.com/charmbracelet/bubbletea v0.25.0
 	github.com/charmbracelet/lipgloss v0.10.0
+	github.com/mattn/go-runewidth v0.0.15
 )
 
 require (
@@ -14,7 +15,6 @@ require (
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.18 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
-	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/muesli/ansi v0.0.0-20211018074035-2e021307bc4b // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
 	github.com/muesli/reflow v0.3.0 // indirect
diff --git a/render.go b/render.go
index 020eeb2..05185d6 100644
--- a/render.go
+++ b/render.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/charmbracelet/lipgloss"
+	"github.com/mattn/go-runewidth"
 )
 
 // === UI стили ===
@@ -330,83 +331,8 @@ func renderLineWithCursor(line string, cursorX int, fileType string) string {
 
 // === ANSI утилиты ===
 
-// runeWidth возвращает визуальную ширину символа в терминале.
-// Большинство символов = 1, но wide characters (CJK, emoji) = 2.
-func runeWidth(r rune) int {
-	// Управляющие символы
-	if r < 32 || r == 127 {
-		return 0
-	}
-	// ASCII и Latin-1
-	if r < 0x300 {
-		return 1
-	}
-	// Combining marks (нулевая ширина)
-	if r >= 0x300 && r <= 0x36F {
-		return 0
-	}
-	if r >= 0x1AB0 && r <= 0x1AFF {
-		return 0
-	}
-	if r >= 0x1DC0 && r <= 0x1DFF {
-		return 0
-	}
-	if r >= 0x20D0 && r <= 0x20FF {
-		return 0
-	}
-	if r >= 0xFE20 && r <= 0xFE2F {
-		return 0
-	}
-	// CJK и широкие блоки
-	switch {
-	case r >= 0x1100 && r <= 0x115F:
-		return 2 // Hangul Jamo
-	case r == 0x2329 || r == 0x232A:
-		return 2
-	case r >= 0x2E80 && r <= 0x303E:
-		return 2 // CJK Radicals
-	case r >= 0x3040 && r <= 0x33FF:
-		return 2 // Japanese
-	case r >= 0x3400 && r <= 0x4DBF:
-		return 2 // CJK Extension A
-	case r >= 0x4E00 && r <= 0xA4CF:
-		return 2 // CJK Unified
-	case r >= 0xA960 && r <= 0xA97F:
-		return 2 // Hangul Jamo Extended-A
-	case r >= 0xAC00 && r <= 0xD7AF:
-		return 2 // Hangul Syllables
-	case r >= 0xF900 && r <= 0xFAFF:
-		return 2 // CJK Compatibility
-	case r >= 0xFE10 && r <= 0xFE19:
-		return 2
-	case r >= 0xFE30 && r <= 0xFE6F:
-		return 2
-	case r >= 0xFF00 && r <= 0xFF60:
-		return 2 // Fullwidth
-	case r >= 0xFFE0 && r <= 0xFFE6:
-		return 2
-	case r >= 0x1B000 && r <= 0x1B0FF:
-		return 2 // Kana Supplement
-	case r >= 0x1F004 && r <= 0x1F0CF:
-		return 2 // Playing cards etc
-	case r >= 0x1F100 && r <= 0x1F1FF:
-		return 1 // Enclosed Alphanumeric Supplement (flags base)
-	case r >= 0x1F200 && r <= 0x1F2FF:
-		return 2 // Enclosed IdeographicSupplement
-	case r >= 0x1F300 && r <= 0x1F9FF:
-		return 2 // Misc symbols, emoji
-	case r >= 0x1FA00 && r <= 0x1FAFF:
-		return 2 // Chess, symbols
-	case r >= 0x20000 && r <= 0x2FFFD:
-		return 2 // CJK Extension B-F
-	case r >= 0x30000 && r <= 0x3FFFD:
-		return 2
-	}
-	return 1
-}
-
 // visibleWidth возвращает визуальную ширину строки в терминале,
-// учитывая ANSI escape-коды и double-width символы (CJK, emoji).
+// учитывая ANSI escape-коды и double-width символы через go-runewidth.
 func visibleWidth(s string) int {
 	w := 0
 	inEsc := false
@@ -421,7 +347,7 @@ func visibleWidth(s string) int {
 			}
 			continue
 		}
-		w += runeWidth(r)
+		w += runewidth.RuneWidth(r)
 	}
 	return w
 }
@@ -467,7 +393,7 @@ func truncateVisible(s string, maxWidth int) string {
 			}
 			continue
 		}
-		rw := runeWidth(r)
+		rw := runewidth.RuneWidth(r)
 		if vis+rw > maxWidth {
 			break
 		}
diff --git a/untitled.md b/untitled.md
deleted file mode 100644
index b0bff1c..0000000
--- a/untitled.md
+++ /dev/null
@@ -1,4 +0,0 @@
-```bash
-deqwdq wdaw
-SDW
-```
\ No newline at end of file