diff --git a/README.md b/README.md
index 8074a65..8f123a9 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,7 @@ scripts/dev.sh --host   # 前端监听所有网卡，手机访问 http://<电脑
 ```
 
 浏览器打开 http://localhost:5173 ，首次使用直接设置登录密码。端口与数据目录可用 `API_PORT`、`WEB_PORT`、`RAWMARK_DATA` 覆盖，详见 `scripts/dev.sh --help`。
+开发模式从源码统计可选字体，日志导出的版本标为 `dev`，不读取已有 `web/dist`；生产模式使用前端构建清单与页面构建版本。
 
 检查：
 
diff --git a/cmd/rawmark/main.go b/cmd/rawmark/main.go
index e44a23d..59d8eb5 100644
--- a/cmd/rawmark/main.go
+++ b/cmd/rawmark/main.go
@@ -6,7 +6,6 @@
 package main
 
 import (
-	"bytes"
 	"context"
 	"errors"
 	"fmt"
@@ -18,13 +17,13 @@ import (
 	"os"
 	"os/signal"
 	"path/filepath"
-	"rawmark/internal/backup"
 	"sync"
 	"syscall"
 	"time"
 
 	"rawmark/internal/api"
 	"rawmark/internal/auth"
+	"rawmark/internal/backup"
 	"rawmark/internal/events"
 	"rawmark/internal/search"
 	"rawmark/internal/store"
@@ -84,23 +83,10 @@ func run(addr string) error {
 	if err != nil {
 		return fmt.Errorf("读取内置字体统计失败: %w", err)
 	}
-	// 构建标识与前端入口一致，不另建版本来源。
-	static := web.Dist()
-	html, err := fs.ReadFile(static, "index.html")
+	buildVersion, err := web.BuildVersion()
 	if err != nil {
 		return err
 	}
-	buildVersion := ""
-	marker := []byte(`<meta name="rawmark-version" content="`)
-	if start := bytes.Index(html, marker); start >= 0 {
-		rest := html[start+len(marker):]
-		if end := bytes.IndexByte(rest, '"'); end >= 0 {
-			buildVersion = string(rest[:end])
-		}
-	}
-	if buildVersion == "" {
-		return fmt.Errorf("缺少构建版本")
-	}
 	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
 	defer stop()
 	for {
diff --git a/web/embed.go b/web/embed.go
index ca11a34..8f7c8a6 100644
--- a/web/embed.go
+++ b/web/embed.go
@@ -5,7 +5,9 @@
 package web
 
 import (
+	"bytes"
 	"embed"
+	"fmt"
 	"io/fs"
 )
 
@@ -19,3 +21,19 @@ func Dist() fs.FS {
 	}
 	return sub
 }
+
+// BuildVersion 与页面入口使用同一构建标识，生产产物缺失时明确失败。
+func BuildVersion() (string, error) {
+	html, err := fs.ReadFile(Dist(), "index.html")
+	if err != nil {
+		return "", err
+	}
+	marker := []byte(`<meta name="rawmark-version" content="`)
+	if start := bytes.Index(html, marker); start >= 0 {
+		rest := html[start+len(marker):]
+		if end := bytes.IndexByte(rest, '"'); end > 0 {
+			return string(rest[:end]), nil
+		}
+	}
+	return "", fmt.Errorf("缺少构建版本")
+}
diff --git a/web/embed_dev.go b/web/embed_dev.go
index 8908ee4..8bec9c8 100644
--- a/web/embed_dev.go
+++ b/web/embed_dev.go
@@ -5,6 +5,8 @@ package web
 import (
 	"io/fs"
 	"os"
+	"path/filepath"
+	"regexp"
 )
 
 // Dist 在开发模式下直接读取磁盘上的 web/dist（未构建时为空，页面由 Vite 开发服务器提供），
@@ -12,3 +14,31 @@ import (
 func Dist() fs.FS {
 	return os.DirFS("web/dist")
 }
+
+// 开发环境由 Vite 提供页面，不依赖 web/dist 中可能过期的构建产物。
+func BuildVersion() (string, error) { return "dev", nil }
+
+// FontStorage 按 Vite 构建使用的 fonts.css 统计可选字体，不包含 Maple 与 KaTeX。
+func FontStorage() (int64, error) {
+	root := filepath.Join("web", "src", "themes")
+	css, err := os.ReadFile(filepath.Join(root, "fonts.css"))
+	if err != nil {
+		return 0, err
+	}
+	paths := regexp.MustCompile(`url\(['"]?(\.?/?fonts/[^)'"]+)`).FindAllSubmatch(css, -1)
+	seen := map[string]bool{}
+	var size int64
+	for _, match := range paths {
+		name := string(match[1])
+		if seen[name] {
+			continue
+		}
+		seen[name] = true
+		info, err := os.Stat(filepath.Join(root, name))
+		if err != nil {
+			return 0, err
+		}
+		size += info.Size()
+	}
+	return size, nil
+}
diff --git a/web/embed_dev_test.go b/web/embed_dev_test.go
new file mode 100644
index 0000000..6626887
--- /dev/null
+++ b/web/embed_dev_test.go
@@ -0,0 +1,43 @@
+//go:build dev
+
+package web
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestDevelopmentMetadataDoesNotRequireBuild(t *testing.T) {
+	root := t.TempDir()
+	t.Chdir(root)
+	themes := filepath.Join("web", "src", "themes")
+	if err := os.MkdirAll(filepath.Join(themes, "fonts"), 0700); err != nil {
+		t.Fatal(err)
+	}
+	css := `@font-face { src: url(./fonts/a.woff2); }
+@font-face { src: url('./fonts/a.woff2'); }
+@font-face { src: url("./fonts/b.woff2"); }`
+	if err := os.WriteFile(filepath.Join(themes, "fonts.css"), []byte(css), 0600); err != nil {
+		t.Fatal(err)
+	}
+	for name, data := range map[string]string{"a.woff2": "abc", "b.woff2": "defgh"} {
+		if err := os.WriteFile(filepath.Join(themes, "fonts", name), []byte(data), 0600); err != nil {
+			t.Fatal(err)
+		}
+	}
+	version, err := BuildVersion()
+	if err != nil || version != "dev" {
+		t.Fatalf("开发版本不应依赖构建产物：%q，%v", version, err)
+	}
+	size, err := FontStorage()
+	if err != nil || size != 8 {
+		t.Fatalf("开发字体统计应按源文件去重：%d，%v", size, err)
+	}
+	if err = os.Remove(filepath.Join(themes, "fonts", "b.woff2")); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = FontStorage(); err == nil {
+		t.Fatal("字体源文件缺失时不得返回零值伪装成功")
+	}
+}
diff --git a/web/font_storage.go b/web/font_storage.go
index 3aa6965..db4d341 100644
--- a/web/font_storage.go
+++ b/web/font_storage.go
@@ -1,3 +1,5 @@
+//go:build !dev
+
 package web
 
 import (