diff --git a/internal/termout/startup.go b/internal/termout/startup.go
new file mode 100644
index 00000000..00209721
--- /dev/null
+++ b/internal/termout/startup.go
@@ -0,0 +1,67 @@
+package termout
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+// StartupWebUIOptions configures the startup Web UI banner.
+type StartupWebUIOptions struct {
+	Scheme       string
+	Port         int
+	SelfSigned   bool
+	HTTPRedirect bool
+}
+
+// PrintConfigCreated prints a short notice when config.yaml is bootstrapped.
+func PrintConfigCreated() {
+	s := New(os.Stdout)
+	s.Println("")
+	s.Println(s.Green("✔ ") + s.Bold("已创建 config.yaml") + s.Dim("（来自 config.example.yaml）"))
+	s.BlankLine()
+}
+
+// PrintStartupWebUI prints a colored startup banner for the Web UI.
+func PrintStartupWebUI(opts StartupWebUIOptions) {
+	s := New(os.Stdout)
+	scheme := opts.Scheme
+	if scheme == "" {
+		scheme = "http"
+	}
+	port := opts.Port
+	if port <= 0 {
+		port = 8080
+	}
+	url := fmt.Sprintf("%s://127.0.0.1:%d/", scheme, port)
+
+	s.BlankLine()
+	s.Println(s.Bold(s.Cyan("CYBERSTRIKE AI")) + s.Dim("  /  secure workspace"))
+	s.Println(s.Dim(strings.Repeat("─", 60)))
+	s.Println(s.Green("● ONLINE") + "   " + s.Bold(s.White(url)))
+	if opts.SelfSigned {
+		s.Println(s.Dim("  TLS      ") + s.Yellow("self-signed") + s.Dim(" · accept the browser warning once"))
+	}
+	if opts.HTTPRedirect {
+		s.Println(s.Dim("  Redirect ") + fmt.Sprintf("http://127.0.0.1:%d/ → HTTPS", port))
+	}
+	s.BlankLine()
+}
+
+// PrintBootstrapAdminCredentials prints the initial admin password banner.
+func PrintBootstrapAdminCredentials(password string) {
+	password = strings.TrimSpace(password)
+	if password == "" {
+		return
+	}
+
+	s := New(os.Stdout)
+	s.Println(s.Bold(s.Yellow("ADMIN SETUP REQUIRED")))
+	s.Println(s.Dim(strings.Repeat("─", 60)))
+	s.Println(s.Dim("  Username  ") + s.Bold(s.White("admin")))
+	s.Println(s.Dim("  Password  ") + s.Bold(s.Yellow(password)))
+	s.BlankLine()
+	s.Println(s.Yellow("  ! ") + s.White("Store this password securely. It is shown only once."))
+	s.Println(s.Dim("    Change it in Settings immediately after signing in."))
+	s.BlankLine()
+}
diff --git a/internal/termout/startup_test.go b/internal/termout/startup_test.go
new file mode 100644
index 00000000..f01b610c
--- /dev/null
+++ b/internal/termout/startup_test.go
@@ -0,0 +1,76 @@
+package termout
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestDisplayWidthEmoji(t *testing.T) {
+	if got := displayWidth("🚀"); got != 2 {
+		t.Fatalf("displayWidth(emoji) = %d, want 2", got)
+	}
+	if got := displayWidth("ab"); got != 2 {
+		t.Fatalf("displayWidth(ab) = %d, want 2", got)
+	}
+}
+
+func TestDisplayWidthIgnoresANSI(t *testing.T) {
+	s := New(nil)
+	colored := s.Bold("admin")
+	if got := displayWidth(colored); got != 5 {
+		t.Fatalf("displayWidth colored = %d, want 5", got)
+	}
+}
+
+func TestPadRightDisplay(t *testing.T) {
+	got := padRightDisplay("pwd", 10)
+	if displayWidth(got) != 10 {
+		t.Fatalf("padded width = %d, want 10", displayWidth(got))
+	}
+}
+
+func TestColorDisabledWithoutTTY(t *testing.T) {
+	s := New(nil)
+	if s.enabled {
+		t.Fatal("expected colors disabled for nil writer")
+	}
+	if got := s.Cyan("x"); got != "x" {
+		t.Fatalf("Cyan without TTY = %q, want plain text", got)
+	}
+}
+
+func TestPrintBootstrapAdminCredentialsEmpty(t *testing.T) {
+	PrintBootstrapAdminCredentials("   ")
+}
+
+func TestPrintStartupWebUIOptions(t *testing.T) {
+	PrintStartupWebUI(StartupWebUIOptions{
+		Scheme:       "https",
+		Port:         8080,
+		SelfSigned:   true,
+		HTTPRedirect: true,
+	})
+}
+
+func TestBoxRowAlignedWidth(t *testing.T) {
+	s := New(nil)
+	rows := []string{
+		s.Bold("CyberStrikeAI") + s.White(" is ready"),
+		s.Dim("Web UI   ") + s.Bold("https://127.0.0.1:8080/"),
+	}
+	inner := maxDisplayWidth(rows...)
+	for _, row := range rows {
+		line := s.boxRow(inner, row)
+		if !strings.Contains(line, "│") {
+			t.Fatalf("box row missing border: %q", line)
+		}
+	}
+}
+
+func TestMaxDisplayWidth(t *testing.T) {
+	short := "abc"
+	long := "https://127.0.0.1:8080/"
+	if got := maxDisplayWidth(short, long); got != displayWidth(long) {
+		t.Fatalf("maxDisplayWidth = %d, want %d", got, displayWidth(long))
+	}
+}
diff --git a/internal/termout/style.go b/internal/termout/style.go
new file mode 100644
index 00000000..2a805de3
--- /dev/null
+++ b/internal/termout/style.go
@@ -0,0 +1,108 @@
+package termout
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+)
+
+const (
+	codeReset  = "\033[0m"
+	codeBold   = "\033[1m"
+	codeDim    = "\033[2m"
+	codeRed    = "\033[31m"
+	codeGreen  = "\033[32m"
+	codeYellow = "\033[33m"
+	codeBlue   = "\033[34m"
+	codeCyan   = "\033[36m"
+	codeWhite  = "\033[97m"
+)
+
+// Style wraps ANSI styling with TTY / NO_COLOR awareness.
+type Style struct {
+	out     io.Writer
+	enabled bool
+}
+
+// New creates a Style writing to out (typically os.Stdout).
+func New(out io.Writer) *Style {
+	return &Style{out: out, enabled: colorEnabled(out)}
+}
+
+func colorEnabled(w io.Writer) bool {
+	if strings.TrimSpace(os.Getenv("NO_COLOR")) != "" {
+		return false
+	}
+	force := strings.TrimSpace(os.Getenv("FORCE_COLOR"))
+	if force == "1" || strings.EqualFold(force, "true") || strings.EqualFold(force, "yes") {
+		return true
+	}
+	f, ok := w.(*os.File)
+	if !ok {
+		return false
+	}
+	stat, err := f.Stat()
+	if err != nil {
+		return false
+	}
+	return stat.Mode()&os.ModeCharDevice != 0
+}
+
+func (s *Style) paint(code, text string) string {
+	if !s.enabled || text == "" {
+		return text
+	}
+	return code + text + codeReset
+}
+
+func (s *Style) Bold(text string) string   { return s.paint(codeBold, text) }
+func (s *Style) Dim(text string) string    { return s.paint(codeDim, text) }
+func (s *Style) Red(text string) string    { return s.paint(codeRed, text) }
+func (s *Style) Green(text string) string  { return s.paint(codeGreen, text) }
+func (s *Style) Yellow(text string) string { return s.paint(codeYellow, text) }
+func (s *Style) Blue(text string) string   { return s.paint(codeBlue, text) }
+func (s *Style) Cyan(text string) string   { return s.paint(codeCyan, text) }
+func (s *Style) White(text string) string  { return s.paint(codeWhite, text) }
+
+func (s *Style) Println(text string) {
+	_, _ = fmt.Fprintln(s.out, text)
+}
+
+func (s *Style) Printf(format string, args ...interface{}) {
+	_, _ = fmt.Fprintf(s.out, format, args...)
+}
+
+func (s *Style) BlankLine() {
+	s.Println("")
+}
+
+func (s *Style) boxTop(innerWidth int) string {
+	return s.Cyan("╭" + strings.Repeat("─", innerWidth+2) + "╮")
+}
+
+func (s *Style) boxBottom(innerWidth int) string {
+	return s.Cyan("╰" + strings.Repeat("─", innerWidth+2) + "╯")
+}
+
+func (s *Style) boxRow(innerWidth int, content string) string {
+	return s.Cyan("│ ") + padRightDisplay(content, innerWidth) + s.Cyan(" │")
+}
+
+func (s *Style) printBox(rows []string, minInner, maxInner int) {
+	inner := maxDisplayWidth(rows...)
+	if inner < minInner {
+		inner = minInner
+	}
+	if maxInner > 0 && inner > maxInner {
+		inner = maxInner
+	}
+
+	s.BlankLine()
+	s.Println(s.boxTop(inner))
+	for _, row := range rows {
+		s.Println(s.boxRow(inner, row))
+	}
+	s.Println(s.boxBottom(inner))
+	s.BlankLine()
+}
diff --git a/internal/termout/width.go b/internal/termout/width.go
new file mode 100644
index 00000000..9ea812bf
--- /dev/null
+++ b/internal/termout/width.go
@@ -0,0 +1,73 @@
+package termout
+
+import (
+	"regexp"
+	"strings"
+	"unicode/utf8"
+
+	"golang.org/x/text/width"
+)
+
+var ansiEscapeRe = regexp.MustCompile(`\x1b\[[0-9;]*m`)
+
+// displayWidth returns the terminal display width of text, ignoring ANSI codes.
+func displayWidth(text string) int {
+	plain := ansiEscapeRe.ReplaceAllString(text, "")
+	w := 0
+	for _, r := range plain {
+		w += runeDisplayWidth(r)
+	}
+	return w
+}
+
+func runeDisplayWidth(r rune) int {
+	if r == utf8.RuneError {
+		return 0
+	}
+	// Most emoji / symbols render as double-width in modern terminals.
+	if isEmojiLikeRune(r) {
+		return 2
+	}
+	switch width.LookupRune(r).Kind() {
+	case width.EastAsianWide, width.EastAsianFullwidth:
+		return 2
+	default:
+		return 1
+	}
+}
+
+func isEmojiLikeRune(r rune) bool {
+	switch {
+	case r >= 0x1F300 && r <= 0x1FAFF: // pictographs / emoji
+		return true
+	case r >= 0x2600 && r <= 0x27BF: // misc symbols
+		return true
+	case r >= 0x2300 && r <= 0x23FF: // misc technical (⌚ etc.)
+		return true
+	case r >= 0x2B50 && r <= 0x2B55:
+		return true
+	default:
+		return false
+	}
+}
+
+func padRightDisplay(text string, target int) string {
+	if target <= 0 {
+		return ""
+	}
+	gap := target - displayWidth(text)
+	if gap <= 0 {
+		return text
+	}
+	return text + strings.Repeat(" ", gap)
+}
+
+func maxDisplayWidth(rows ...string) int {
+	max := 0
+	for _, row := range rows {
+		if w := displayWidth(row); w > max {
+			max = w
+		}
+	}
+	return max
+}