diff --git a/docs/vpn-core-embedding.md b/docs/vpn-core-embedding.md
index 5f20df7..acd2b34 100644
--- a/docs/vpn-core-embedding.md
+++ b/docs/vpn-core-embedding.md
@@ -118,8 +118,11 @@ libbox CommandServer ──(gRPC/IPC)──▶ 原生订阅速率/状态 ──(
 
 ## 8. 分阶段迁移(PoC 全程保持可用,逐端切换)
 
-1. **P0 · libbox Apple 产物 + 版本对齐**:编出 `Libbox.xcframework`,固定 sing-box 版本,
-   本地能 `NewService` 起一个最小配置(冒烟)。
+1. **P0 · libbox Apple 产物 + 版本对齐**:编出 `Libbox.xcframework`,固定 sing-box 版本。
+   ✅ **已完成**:`scripts/build-libbox.sh apple macos` 复现;用 sagernet/gomobile fork
+   v0.1.12 + sing-box v1.13.13 + 官方 `build_libbox` 编出双架构(arm64+x86_64)
+   `Libbox.xcframework`(~204MB),Headers 暴露 `LibboxNewService` / `LibboxCommandClient`
+   (状态·速率·连接)等 API。产物不入 git(体积大),按需用脚本重编 / 后续走 CI。
 2. **P1 · macOS System Extension(主力)**:新增 sysex target + NEPacketTunnelProvider +
    App Group + 签名公证;`NativeVpnBridge` 经 method channel 启停;连接页接 libbox 状态/速率。
    **达标即 macOS 不再需要外部 sing-box / sudo。**
diff --git a/scripts/build-libbox.sh b/scripts/build-libbox.sh
new file mode 100644
index 0000000..d40572c
--- /dev/null
+++ b/scripts/build-libbox.sh
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+# build-libbox.sh — 把 sing-box 编成嵌入式核心库(方案B / docs/vpn-core-embedding.md)
+#
+# 产物:
+#   apple  → Libbox.xcframework  (macOS System Extension / iOS Packet Tunnel 链接)
+#   android→ Libbox.aar          (VpnService 集成)
+#
+# 关键:用 sagernet 的 gomobile **fork**(非上游 golang.org/x/mobile)。
+# sing-box 版本必须与节点对齐(当前节点 1.13.13)。
+#
+# 用法:
+#   bash scripts/build-libbox.sh apple macos     # 只编 macOS(快)
+#   bash scripts/build-libbox.sh apple           # 全 Apple(ios+sim+tvos+macos,慢)
+#   bash scripts/build-libbox.sh android
+#   SINGBOX_VERSION=v1.13.13 WORK=/tmp/x bash scripts/build-libbox.sh apple macos
+set -euo pipefail
+
+SINGBOX_VERSION="${SINGBOX_VERSION:-v1.13.13}"   # 与节点 sing-box 对齐
+TARGET="${1:-apple}"                              # apple | android
+PLATFORM="${2:-}"                                 # macos | ios | "" (全 Apple)
+WORK="${WORK:-/tmp/pangolin-libbox}"
+
+command -v go >/dev/null || { echo "✗ 需要 Go"; exit 1; }
+
+echo "==> [1/3] 安装 sagernet/gomobile fork v0.1.12(非上游)"
+go install github.com/sagernet/gomobile/cmd/gomobile@v0.1.12
+go install github.com/sagernet/gomobile/cmd/gobind@v0.1.12
+export PATH="$PATH:$(go env GOPATH)/bin"
+gomobile init
+
+echo "==> [2/3] 拉 sing-box $SINGBOX_VERSION 源码"
+mkdir -p "$WORK"
+rm -rf "$WORK/sing-box"
+git clone --depth 1 --branch "$SINGBOX_VERSION" https://github.com/SagerNet/sing-box.git "$WORK/sing-box"
+cd "$WORK/sing-box"
+
+echo "==> [3/3] 用官方 build_libbox 编核心库"
+if [ "$TARGET" = "apple" ]; then
+  if [ -n "$PLATFORM" ]; then
+    go run ./cmd/internal/build_libbox -target apple -platform "$PLATFORM"
+  else
+    go run ./cmd/internal/build_libbox -target apple
+  fi
+  echo "✅ 产物: $WORK/sing-box/Libbox.xcframework"
+  echo "   下一步(P1):拖进 macOS System Extension target 链接;Headers 暴露"
+  echo "   LibboxNewService / LibboxCommandClient(状态·速率)等 API。"
+else
+  go run ./cmd/internal/build_libbox -target android
+  echo "✅ 产物: $WORK/sing-box/Libbox.aar"
+fi