diff --git a/src/main.cpp b/src/main.cpp
index d95e061..e183341 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,75 +5,61 @@
 #include "utils/strings.h"
 #include "utils/files.h"
 #include "utils/log.h"
-#include <fstream>
+#include <windows.h>
 #include <string>
 
-// 去除字符串首尾空白
-static std::string trim(const std::string &s) {
-    auto start = s.find_first_not_of(" \t\r\n");
-    if (start == std::string::npos) return "";
-    auto end = s.find_last_not_of(" \t\r\n");
-    return s.substr(start, end - start + 1);
-}
-
-// 解析config.ini，将键值对填入Config
+// 解析config.ini，使用Windows系统API GetPrivateProfileStringW
 static bool parse_config(const std::wstring &path, Config &cfg, std::string *error) {
-    std::ifstream file(path);
-    if (!file.is_open()) {
-        if (error) *error = "Cannot open config file: " + utils::wstr_to_str(path);
+    if (GetFileAttributesW(path.c_str()) == INVALID_FILE_ATTRIBUTES) {
+        *error = "Config file not found: " + utils::wstr_to_str(path);
         return false;
     }
 
-    std::string line;
-    while (std::getline(file, line)) {
-        line = trim(line);
-        if (line.empty() || line[0] == ';' || line[0] == '#') continue;
-        if (line[0] == '[') continue; // 跳过section头
+    wchar_t buf[512];
 
-        size_t eq = line.find('=');
-        if (eq == std::string::npos) continue;
+    // [CONFIG] section
+    auto read_w = [&](const wchar_t *key) -> std::wstring {
+        DWORD len = GetPrivateProfileStringW(L"CONFIG", key, L"", buf, _countof(buf), path.c_str());
+        return {buf, len};
+    };
 
-        std::string key = trim(line.substr(0, eq));
-        std::string val = trim(line.substr(eq + 1));
+    cfg.icf_path = read_w(L"ICF_PATH");
+    cfg.image_dir = read_w(L"IMAGE_DIR");
+    cfg.overlay_dir = read_w(L"OVERLAY_DIR");
 
-        if (key == "ICF_PATH") {
-            cfg.icf_path = utils::to_wstring(val);
-        } else if (key == "IMAGE_DIR") {
-            cfg.image_dir = utils::to_wstring(val);
-        } else if (key == "OVERLAY_DIR") {
-            cfg.overlay_dir = utils::to_wstring(val);
-        } else if (key == "MOUNT_LETTER") {
-            if (!val.empty()) {
-                char ch = val[0];
-                if (ch >= 'a' && ch <= 'z') ch -= 'a' - 'A';
-                cfg.mount_letter = static_cast<wchar_t>(ch);
-            }
-        } else if (key == "APP_LINK") {
-            cfg.app_link = utils::to_wstring(val);
-        } else if (key == "OPT_LINK") {
-            cfg.opt_link = utils::to_wstring(val);
-        } else if (key == "APP_KEY") {
-            cfg.app_key = val;
-        } else if (key == "APP_IV") {
-            cfg.app_iv = val;
-        } else if (key == "OPT_KEY") {
-            cfg.opt_key = val;
-        } else if (key == "OPT_IV") {
-            cfg.opt_iv = val;
-        }
+    std::wstring letter = read_w(L"MOUNT_LETTER");
+    if (!letter.empty()) {
+        wchar_t ch = letter[0];
+        if (ch >= L'a' && ch <= L'z') ch -= L'a' - L'A';
+        cfg.mount_letter = ch;
     }
+
+    cfg.app_link = read_w(L"APP_LINK");
+    cfg.opt_link = read_w(L"OPT_LINK");
+
+    // [KEYS] section
+    auto read_a = [&](const wchar_t *key) -> std::string {
+        DWORD len = GetPrivateProfileStringW(L"KEYS", key, L"", buf, _countof(buf), path.c_str());
+        return utils::wstr_to_str(std::wstring(buf, len));
+    };
+
+    cfg.app_key = read_a(L"APP_KEY");
+    cfg.app_iv = read_a(L"APP_IV");
+    cfg.opt_key = read_a(L"OPT_KEY");
+    cfg.opt_iv = read_a(L"OPT_IV");
+
     return true;
 }
 
 static void print_usage() {
-    LOG_INFO(
+    std::fputs(
+        "SEGA MOUNT\n"
         "Usage:\n"
-        "  sega_mount -m [config.ini]   挂载\n"
-        "  sega_mount -u [config.ini]   卸载\n"
-        "\n"
-        "  config.ini默认读取exe所在目录，也可在命令行指定路径\n"
-        "  Warn: UNMOUNT maybe unstable"
+        "  sega_mount -m [config.ini]   Mount\n"
+        "  sega_mount -u [config.ini]   Unmount\n",
+        stdout
     );
+    std::fflush(stdout);
 }
 
 int main(int argc, char *argv[]) {