diff --git a/src/app/login/LoginWindow.cpp b/src/app/login/LoginWindow.cpp
index 10594ef..0badd6f 100644
--- a/src/app/login/LoginWindow.cpp
+++ b/src/app/login/LoginWindow.cpp
@@ -20,6 +20,10 @@
 #include "AuthService.hpp"
 #include "Theme.hpp"
 
+#include <ElaCheckBox.h>
+#include <ElaLineEdit.h>
+#include <ElaPushButton.h>
+
 namespace geopro::app {
 
 namespace {
@@ -95,12 +99,7 @@ LoginWindow::LoginWindow(geopro::net::AuthService& auth, QWidget* parent)
                       "#brandTitle { color: #FFFFFF; font-size: %1px; font-weight: %2; }"
                       "#brandSubtitle { color: rgba(255,255,255,0.82); font-size: %3px; }"
                       "#fieldLabel { color: #5A6B85; font-size: %4px; font-weight: %5; }"
-                      "QLineEdit {"
-                      "  background: #FFFFFF; color: #1F2A3D;"
-                      "  border: 1px solid #C7D2E0; border-radius: 8px; padding: 0 12px;"
-                      "  selection-background-color: #2D6CB5; selection-color: #FFFFFF; }"
-                      "QLineEdit:focus { border: 1px solid #2D6CB5; }"
-                      "QLineEdit:disabled { background: #F0F2F6; color: #8A93A3; }"
+                      // 输入框已 Ela 化(ElaLineEdit 自绘 Fluent + 自动明暗)，不再写 QLineEdit QSS。
                       "#captchaImg { border: 1px solid #C7D2E0; border-radius: 8px; background: #EEF2FB; }")
                       .arg(type::kDisplay)
                       .arg(type::kWeightBold)
@@ -146,12 +145,12 @@ LoginWindow::LoginWindow(geopro::net::AuthService& auth, QWidget* parent)
         form->addSpacing(6);
     };
 
-    userEdit_ = new QLineEdit(body);
+    userEdit_ = new ElaLineEdit(body);
     userEdit_->setPlaceholderText(QStringLiteral("请输入用户名"));
     userEdit_->setClearButtonEnabled(true);
     addField(QStringLiteral("用户名"), userEdit_);
 
-    pwdEdit_ = new QLineEdit(body);
+    pwdEdit_ = new ElaLineEdit(body);
     pwdEdit_->setEchoMode(QLineEdit::Password);
     pwdEdit_->setPlaceholderText(QStringLiteral("请输入密码"));
     addField(QStringLiteral("密码"), pwdEdit_);
@@ -163,7 +162,7 @@ LoginWindow::LoginWindow(geopro::net::AuthService& auth, QWidget* parent)
 
     auto* captchaRow = new QHBoxLayout();
     captchaRow->setSpacing(10);
-    codeEdit_ = new QLineEdit(body);
+    codeEdit_ = new ElaLineEdit(body);
     codeEdit_->setMinimumHeight(40);
     codeEdit_->setPlaceholderText(QStringLiteral("请输入验证码"));
     captchaLabel_ = new QLabel(body);
@@ -187,10 +186,8 @@ LoginWindow::LoginWindow(geopro::net::AuthService& auth, QWidget* parent)
     form->addLayout(refreshRow);
 
     // 记住登录：勾选后成功登录将安全存储 token，30 天内免登录。默认不勾（更安全）。
-    rememberChk_ = new QCheckBox(QStringLiteral("记住登录（30 天内免登录）"), body);
-    rememberChk_->setCursor(Qt::PointingHandCursor);
-    rememberChk_->setStyleSheet(
-        QStringLiteral("color:#5A6B85; font-size:%1px;").arg(type::kBody));
+    rememberChk_ = new ElaCheckBox(QStringLiteral("记住登录（30 天内免登录）"), body);
+    rememberChk_->setCursor(Qt::PointingHandCursor);  // ElaCheckBox 自绘 Fluent + 自动明暗
     form->addWidget(rememberChk_);
 
     // 错误提示：固定占位高度，避免出现时整体布局跳动。
@@ -204,17 +201,9 @@ LoginWindow::LoginWindow(geopro::net::AuthService& auth, QWidget* parent)
     form->addStretch();
 
     // 主操作：满宽强调主按钮（von Restorff：唯一高强调元素引导主流程）。
-    loginBtn_ = new QPushButton(QStringLiteral("登 录"), body);
+    loginBtn_ = new ElaPushButton(QStringLiteral("登 录"), body);  // Fluent 主按钮(自动明暗)
     loginBtn_->setMinimumHeight(44);
     loginBtn_->setCursor(Qt::PointingHandCursor);
-    loginBtn_->setStyleSheet(QStringLiteral(
-                                 "QPushButton { background: #2D6CB5; color: #FFFFFF; border: none; border-radius: 8px; "
-                                 "font-size: %1px; font-weight: %2; }"
-                                 "QPushButton:hover { background: #2862A6; }"
-                                 "QPushButton:pressed { background: #234F87; }"
-                                 "QPushButton:disabled { background: #9FB4CC; }")
-                                 .arg(type::kTitle)
-                                 .arg(type::kWeightSemibold));
     loginBtn_->setDefault(true);
     form->addWidget(loginBtn_);
 
diff --git a/src/app/main.cpp b/src/app/main.cpp
index 3fb41bd..1d6c1a6 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -966,7 +966,11 @@ int main(int argc, char* argv[])
     QCoreApplication::setOrganizationName(QStringLiteral("Geomative"));
     QCoreApplication::setApplicationName(QStringLiteral("Geopro3"));
 
-    // 浅色专业主题（Fusion + 调色板 + 全局样式表）：仅外观，登录窗与工作台共用。
+    // ElaApplication：Fluent 主题/字体/动画基建。无条件初始化——登录窗与各面板已 Ela 化，
+    // 两种壳都需要它（登录发生在选壳之前）。Ela 控件跟随 ElaTheme；标准控件仍由下面 QSS 接管。
+    eApp->init();
+
+    // 专业主题（Fusion + 调色板 + 全局样式表）：标准控件外观，登录窗与工作台共用。
     geopro::app::applyTheme(app);
 
     // PROJ 数据(proj.db)定位：体素配准的 CrsTransform 需要。优先已设环境变量；
@@ -1022,7 +1026,6 @@ int main(int argc, char* argv[])
     const QString kTitle = QStringLiteral("Geopro 3.0 — 项目分析视图 (M1)");
     QWidget* topLevel = nullptr;
     if (qEnvironmentVariable("GEOPRO_UI_SHELL") == QLatin1String("ela")) {
-        eApp->init();  // ElaApplication：Fluent 主题/字体/动画基建
         auto* ela = new ElaWindow;
         ela->setWindowTitle(kTitle);
         ela->resize(1280, 800);