diff --git a/frontend/app/features/admin/AdminPages.tsx b/frontend/app/features/admin/AdminPages.tsx
index cc75cd6..5fe192a 100644
--- a/frontend/app/features/admin/AdminPages.tsx
+++ b/frontend/app/features/admin/AdminPages.tsx
@@ -8,6 +8,7 @@ import { useApi, useAuth } from "../../context/AuthContext";
 import Icon from "../../components/Icon";
 import "../../styles/admin.css";
 import "../../styles/dashboard.css";
+import "../../styles/platform.css";
 
 
 type Notice = {
@@ -41,13 +42,13 @@ export function DashboardPage({
       <div className="dashboard-metrics">
         <article><Icon name="script" /><span><b>{scriptCount}</b><small>工作副本</small></span></article>
         <article><Icon name="workspace" /><span><b>2</b><small>Workspace</small></span></article>
-        <article><Icon name="settings" /><span><b>4</b><small>平台员工</small></span></article>
+        <article><Icon name="settings" /><span><b>4</b><small>平台用户</small></span></article>
         <article><Icon name="check" /><span><b>{online ? "正常" : "检查中"}</b><small>平台状态</small></span></article>
       </div>
       <div className="dashboard-actions">
         <button type="button" onClick={() => onNavigate("scripts")}><Icon name="script" />构建脚本</button>
         <button type="button" onClick={() => onNavigate("schedules")}><Icon name="schedule" />调度配置</button>
-        <button type="button" onClick={() => onNavigate("system")}><Icon name="settings" />员工管理</button>
+        <button type="button" onClick={() => onNavigate("system")}><Icon name="settings" />系统管理</button>
       </div>
       <div className="dashboard-grid">
         <section className="dashboard-panel dashboard-panel--trend">
@@ -105,6 +106,11 @@ const EMPTY_FORM = {
   status: "active" as "active" | "disabled" | "locked",
 };
 
+const EMPTY_PROJECT_FORM = {
+  project_name: "",
+  description: "",
+};
+
 export function SystemAdminPage({
   onNotify,
   onConnectionChange,
@@ -112,6 +118,7 @@ export function SystemAdminPage({
   onNotify: (notice: Notice) => void;
   onConnectionChange: (online: boolean) => void;
 }) {
+  const [activeTab, setActiveTab] = useState<"users" | "projects">("users");
   const api = useApi();
   const { user, currentWorkspace } = useAuth();
   const [employees, setEmployees] = useState<Employee[]>([]);
@@ -120,6 +127,8 @@ export function SystemAdminPage({
   const [editing, setEditing] = useState<Employee | null>(null);
   const [dialogOpen, setDialogOpen] = useState(false);
   const [form, setForm] = useState(EMPTY_FORM);
+  const [projectDialogOpen, setProjectDialogOpen] = useState(false);
+  const [projectForm, setProjectForm] = useState(EMPTY_PROJECT_FORM);
   const canManage = user?.role_code === "admin";
 
   const load = async (): Promise<void> => {
@@ -131,7 +140,7 @@ export function SystemAdminPage({
       onConnectionChange(false);
       onNotify({
         tone: "error",
-        message: error instanceof Error ? error.message : "员工列表加载失败",
+        message: error instanceof Error ? error.message : "用户列表加载失败",
       });
     } finally {
       setLoading(false);
@@ -160,7 +169,7 @@ export function SystemAdminPage({
     setDialogOpen(true);
   };
 
-  const submit = async (event: FormEvent): Promise<void> => {
+  const submit = async (event: React.FormEvent): Promise<void> => {
     event.preventDefault();
     if (!form.display_name.trim() || (!editing && !form.username.trim())) return;
     setSaving(true);
@@ -185,11 +194,11 @@ export function SystemAdminPage({
         setEmployees((current) => [...current, created]);
       }
       setDialogOpen(false);
-      onNotify({ tone: "success", message: editing ? "员工信息已更新" : "员工已添加" });
+      onNotify({ tone: "success", message: editing ? "用户信息已更新" : "用户已添加" });
     } catch (error) {
       onNotify({
         tone: "error",
-        message: error instanceof ApiRequestError ? error.message : "保存员工失败",
+        message: error instanceof ApiRequestError ? error.message : "保存用户失败",
       });
     } finally {
       setSaving(false);
@@ -197,62 +206,178 @@ export function SystemAdminPage({
   };
 
   const remove = async (employee: Employee): Promise<void> => {
-    if (!window.confirm(`确定从当前 Workspace 删除员工“${employee.display_name}”吗？`)) return;
+    if (!window.confirm(`确定从当前 Workspace 删除用户"${employee.display_name}"吗？`)) return;
     try {
       await api.deleteEmployee(employee.user_id);
       setEmployees((current) => current.filter((item) => item.user_id !== employee.user_id));
-      onNotify({ tone: "success", message: "员工已删除" });
+      onNotify({ tone: "success", message: "用户已删除" });
     } catch (error) {
       onNotify({
         tone: "error",
-        message: error instanceof Error ? error.message : "删除员工失败",
+        message: error instanceof Error ? error.message : "删除用户失败",
       });
     }
   };
 
+  const openCreateProject = (): void => {
+    setProjectForm(EMPTY_PROJECT_FORM);
+    setProjectDialogOpen(true);
+  };
+
+  const submitProject = async (event: React.FormEvent): Promise<void> => {
+    event.preventDefault();
+    if (!projectForm.project_name.trim()) return;
+    setSaving(true);
+    try {
+      // TODO: 调用实际的项目创建 API
+      // await api.createProject({ ... })
+      setProjectDialogOpen(false);
+      onNotify({ tone: "success", message: "项目已创建" });
+    } catch (error) {
+      onNotify({
+        tone: "error",
+        message: error instanceof ApiRequestError ? error.message : "创建项目失败",
+      });
+    } finally {
+      setSaving(false);
+    }
+  };
+
   return (
     <section className="admin-page">
-      <header className="admin-page__header">
+      {/* <header className="admin-page__header">
         <div>
           <span>系统管理</span>
-          <h2>员工管理</h2>
-          <p>{currentWorkspace?.workspace_name ?? "（未选择 Workspace）"} · {employees.length} 名员工</p>
+          <h3>{activeTab === "users" ? "用户管理" : "项目管理"}</h3>
+          <p>
+            {currentWorkspace?.workspace_name ?? "（未选择 Workspace）"}
+            {activeTab === "users" ? ` · ${employees.length} 名用户` : ""}
+          </p>
         </div>
-        <button className="primary-button" type="button" disabled={!canManage} onClick={openCreate}>
-          <Icon name="plus" size={15} />添加员工
+        {activeTab === "users" && (
+          <button className="primary-button" type="button" disabled={!canManage} onClick={openCreate}>
+            <Icon name="plus" size={15} />添加用户
+          </button>
+        )}
+      </header> */}
+
+      <div className="admin-tabs">
+        <button
+          className={`admin-tab${activeTab === "users" ? " is-active" : ""}`}
+          type="button"
+          onClick={() => setActiveTab("users")}
+        >
+          <Icon name="workspace" size={16} />
+          用户管理
+        </button>
+        <button
+          className={`admin-tab${activeTab === "projects" ? " is-active" : ""}`}
+          type="button"
+          onClick={() => setActiveTab("projects")}
+        >
+          <Icon name="folder" size={16} />
+          项目管理
         </button>
-      </header>
-      {!canManage && <div className="admin-readonly">当前为开发人员，只能查看员工列表。</div>}
-      <div className="employee-table">
-        <div className="employee-table__head"><span>员工</span><span>账号</span><span>角色</span><span>状态</span><span>操作</span></div>
-        {loading ? <p className="admin-empty">正在加载员工…</p> : employees.map((employee) => {
-          const isProtectedAdmin = employee.role_code === "admin";
-          return (
-            <div className="employee-row" key={employee.user_id}>
-              <span className="employee-name"><b className="avatar">{employee.display_name.slice(0, 1)}</b><span><strong>{employee.display_name}</strong><small>{employee.email ?? "未设置邮箱"}</small></span></span>
-              <code>{employee.username}</code>
-              <span className={`role-pill is-${employee.role_code}`}>{employee.role_name}</span>
-              <span className={`status-pill is-${employee.status}`}>{employee.status === "active" ? "正常" : employee.status === "disabled" ? "已停用" : "已锁定"}</span>
-              <span className="employee-actions">
-                <button type="button" disabled={!canManage} onClick={() => openEdit(employee)}>编辑</button>
-                <button type="button" className="is-danger" disabled={!canManage || isProtectedAdmin} title={isProtectedAdmin ? "管理员账号不能删除" : "删除"} onClick={() => void remove(employee)}>删除</button>
-              </span>
-            </div>
-          );
-        })}
       </div>
 
-      {dialogOpen && (
+      {activeTab === "users" && (
+        <div className="admin-toolbar">
+          <div className="admin-toolbar__search">
+            <Icon name="search" size={14} />
+            <input
+              type="text"
+              placeholder="请输入用户名"
+              className="admin-toolbar__input"
+            />
+          </div>
+          <button
+            className="primary-button admin-toolbar__button"
+            type="button"
+            disabled={!canManage}
+            onClick={openCreate}
+          >
+            <Icon name="plus" size={15} />
+            新建用户
+          </button>
+        </div>
+      )}
+
+      {activeTab === "projects" && (
+        <div className="admin-toolbar">
+          <div className="admin-toolbar__search">
+            <Icon name="search" size={14} />
+            <input
+              type="text"
+              placeholder="请输入项目名称"
+              className="admin-toolbar__input"
+            />
+          </div>
+          <button
+            className="primary-button admin-toolbar__button"
+            type="button"
+            disabled={!canManage}
+            onClick={openCreateProject}
+          >
+            <Icon name="plus" size={15} />
+            新建项目
+          </button>
+        </div>
+      )}
+
+      {activeTab === "users" ? (
+        <>
+          {!canManage && <div className="admin-readonly">当前为开发人员，只能查看用户列表。</div>}
+          <div className="employee-table">
+            <div className="employee-table__head"><span>用户</span><span>账号</span><span>角色</span><span>状态</span><span>操作</span></div>
+            {loading ? <p className="admin-empty">正在加载用户…</p> : employees.map((employee) => {
+              const isProtectedAdmin = employee.role_code === "admin";
+              return (
+                <div className="employee-row" key={employee.user_id}>
+                  <span className="employee-name"><b className="avatar">{employee.display_name.slice(0, 1)}</b><span><strong>{employee.display_name}</strong><small>{employee.email ?? "未设置邮箱"}</small></span></span>
+                  <code>{employee.username}</code>
+                  <span className={`role-pill is-${employee.role_code}`}>{employee.role_name}</span>
+                  <span className={`status-pill is-${employee.status}`}>{employee.status === "active" ? "正常" : employee.status === "disabled" ? "已停用" : "已锁定"}</span>
+                  <span className="employee-actions">
+                    <button type="button" disabled={!canManage} onClick={() => openEdit(employee)}>编辑</button>
+                    <button type="button" className="is-danger" disabled={!canManage || isProtectedAdmin} title={isProtectedAdmin ? "管理员账号不能删除" : "删除"} onClick={() => void remove(employee)}>删除</button>
+                  </span>
+                </div>
+              );
+            })}
+          </div>
+
+          {dialogOpen && (
+            <div className="modal-backdrop">
+              <section className="modal modal--compact" role="dialog" aria-modal="true">
+                <div className="modal__header"><div><span className="modal__eyebrow">EMPLOYEE</span><h2>{editing ? "编辑用户" : "添加用户"}</h2></div><button className="icon-button" type="button" onClick={() => setDialogOpen(false)}><Icon name="close" /></button></div>
+                <form onSubmit={(event) => void submit(event)}>
+                  <label className="form-field"><span>姓名<span className="required">*</span></span><input autoFocus value={form.display_name} onChange={(event) => setForm({ ...form, display_name: event.target.value })} /></label>
+                  <label className="form-field"><span>登录账号<span className="required">*</span></span><input disabled={Boolean(editing)} value={form.username} onChange={(event) => setForm({ ...form, username: event.target.value })} /></label>
+                  <label className="form-field"><span>邮箱</span><input type="email" value={form.email} onChange={(event) => setForm({ ...form, email: event.target.value })} /></label>
+                  <label className="form-field"><span>角色</span><select value={form.role_code} onChange={(event) => setForm({ ...form, role_code: event.target.value as "admin" | "developer" })}><option value="developer">开发人员</option><option value="admin">管理员</option></select></label>
+                  {editing && <label className="form-field"><span>状态</span><select value={form.status} onChange={(event) => setForm({ ...form, status: event.target.value as typeof form.status })}><option value="active">正常</option><option value="disabled">停用</option><option value="locked">锁定</option></select></label>}
+                  <div className="modal__footer"><button className="secondary-button" type="button" onClick={() => setDialogOpen(false)}>取消</button><button className="primary-button" type="submit" disabled={saving}>{saving ? "保存中…" : "保存"}</button></div>
+                </form>
+              </section>
+            </div>
+          )}
+        </>
+      ) : (
+        <div className="project-list-placeholder">
+          <Icon name="folder" size={42} />
+          <h3>项目管理</h3>
+          <p>项目管理功能开发中…</p>
+        </div>
+      )}
+
+      {projectDialogOpen && (
         <div className="modal-backdrop">
           <section className="modal modal--compact" role="dialog" aria-modal="true">
-            <div className="modal__header"><div><span className="modal__eyebrow">EMPLOYEE</span><h2>{editing ? "编辑员工" : "添加员工"}</h2></div><button className="icon-button" type="button" onClick={() => setDialogOpen(false)}><Icon name="close" /></button></div>
-            <form onSubmit={(event) => void submit(event)}>
-              <label className="form-field"><span>姓名</span><input autoFocus value={form.display_name} onChange={(event) => setForm({ ...form, display_name: event.target.value })} /></label>
-              <label className="form-field"><span>登录账号</span><input disabled={Boolean(editing)} value={form.username} onChange={(event) => setForm({ ...form, username: event.target.value })} /></label>
-              <label className="form-field"><span>邮箱</span><input type="email" value={form.email} onChange={(event) => setForm({ ...form, email: event.target.value })} /></label>
-              <label className="form-field"><span>角色</span><select value={form.role_code} onChange={(event) => setForm({ ...form, role_code: event.target.value as "admin" | "developer" })}><option value="developer">开发人员</option><option value="admin">管理员</option></select></label>
-              {editing && <label className="form-field"><span>状态</span><select value={form.status} onChange={(event) => setForm({ ...form, status: event.target.value as typeof form.status })}><option value="active">正常</option><option value="disabled">停用</option><option value="locked">锁定</option></select></label>}
-              <div className="modal__footer"><button className="secondary-button" type="button" onClick={() => setDialogOpen(false)}>取消</button><button className="primary-button" type="submit" disabled={saving}>{saving ? "保存中…" : "保存"}</button></div>
+            <div className="modal__header"><div><span className="modal__eyebrow">PROJECT</span><h2>新建项目</h2></div><button className="icon-button" type="button" onClick={() => setProjectDialogOpen(false)}><Icon name="close" /></button></div>
+            <form onSubmit={(event) => void submitProject(event)}>
+              <label className="form-field"><span>项目名称<span className="required">*</span></span><input autoFocus value={projectForm.project_name} onChange={(event) => setProjectForm({ ...projectForm, project_name: event.target.value })} placeholder="请输入项目名称" /></label>
+              <label className="form-field"><span>项目描述</span><textarea value={projectForm.description} onChange={(event) => setProjectForm({ ...projectForm, description: event.target.value })} placeholder="请输入项目描述（可选）" rows={4} /></label>
+              <div className="modal__footer"><button className="secondary-button" type="button" onClick={() => setProjectDialogOpen(false)}>取消</button><button className="primary-button" type="submit" disabled={saving}>{saving ? "创建中…" : "创建"}</button></div>
             </form>
           </section>
         </div>
diff --git a/frontend/app/features/platform/ModelPlatformApp.tsx b/frontend/app/features/platform/ModelPlatformApp.tsx
index a677676..32eb641 100644
--- a/frontend/app/features/platform/ModelPlatformApp.tsx
+++ b/frontend/app/features/platform/ModelPlatformApp.tsx
@@ -173,6 +173,7 @@ function AuthenticatedModelPlatformApp() {
   const [publishing, setPublishing] = useState(false);
   const [publishedVersion, setPublishedVersion] =
     useState<StableVersion | null>(null);
+  const [sidebarCollapsed, setSidebarCollapsed] = useState(false);
 
   const load = async (silent = false) => {
     if (!silent) setLoading(true);
@@ -800,12 +801,13 @@ function AuthenticatedModelPlatformApp() {
 
   return (
     <div className="app-shell">
-      <aside className="sidebar">
+      <aside className={`sidebar${sidebarCollapsed ? " is-collapsed" : ""}`}>
         <div className="brand">
           <span className="brand__mark"><Icon name="brand" size={31} /></span>
-          <span className="brand__name">模型实验开发平台</span>
+          {!sidebarCollapsed && <span className="brand__name">模型实验开发平台</span>}
         </div>
 
+        {!sidebarCollapsed && (
         <nav className="navigation" aria-label="主导航">
           {navigation.map((item) => (
             <button
@@ -830,10 +832,11 @@ function AuthenticatedModelPlatformApp() {
             </button>
           ))}
         </nav>
+        )}
 
-        <button className="sidebar-footer" type="button">
+        <button className="sidebar-footer" type="button" onClick={() => setSidebarCollapsed((v) => !v)}>
           <Icon name="menu" size={19} />
-          <span>收起菜单</span>
+          <span>{sidebarCollapsed ? "展开菜单" : "收起菜单"}</span>
         </button>
       </aside>
 
diff --git a/frontend/app/styles/admin.css b/frontend/app/styles/admin.css
index bbc9519..436e038 100644
--- a/frontend/app/styles/admin.css
+++ b/frontend/app/styles/admin.css
@@ -1 +1,3 @@
-.dashboard-page,.admin-page{height:100%;padding:24px;overflow:auto;background:#f3f6f9}.dashboard-hero{display:flex;align-items:center;justify-content:space-between;padding:34px;border-radius:12px;color:#fff;background:linear-gradient(125deg,#0b3d69,#1978d4);box-shadow:0 12px 30px rgb(19 80 137/18%)}.dashboard-hero span{font-size:10px;letter-spacing:.12em;opacity:.82}.dashboard-hero h2{margin:8px 0 5px;font-size:25px}.dashboard-hero p{margin:0;font-size:12px;opacity:.88}.dashboard-hero__badge{padding:8px 12px;border-radius:20px;background:rgb(255 255 255/16%)}.dashboard-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.dashboard-metrics article{display:flex;align-items:center;gap:14px;padding:20px;border:1px solid #e0e8ef;border-radius:9px;background:#fff}.dashboard-metrics svg{color:#1978d4}.dashboard-metrics span{display:flex;flex-direction:column}.dashboard-metrics b{color:#20364c;font-size:21px}.dashboard-metrics small{color:#8796a6}.dashboard-actions{display:flex;gap:12px;margin-top:18px}.dashboard-actions button{display:flex;align-items:center;gap:8px;padding:13px 18px;border:1px solid #d8e4ef;border-radius:7px;color:#346587;background:#fff;cursor:pointer}.admin-page__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px;padding:20px 22px;border:1px solid #dee7ef;border-radius:9px;background:#fff}.admin-page__header span{color:#1978d4;font-size:10px;font-weight:800}.admin-page__header h2{margin:4px 0;color:#20364c}.admin-page__header p{margin:0;color:#8a99a8;font-size:11px}.admin-readonly{margin-bottom:12px;padding:10px 13px;border:1px solid #f1d79c;border-radius:6px;color:#8a6416;background:#fff8e8;font-size:11px}.employee-table{overflow:hidden;border:1px solid #dfe7ee;border-radius:9px;background:#fff}.employee-table__head,.employee-row{display:grid;grid-template-columns:1.5fr 1fr .7fr .65fr .8fr;align-items:center;gap:12px;padding:12px 17px}.employee-table__head{color:#748598;background:#f5f8fb;font-size:10px;font-weight:700}.employee-row{min-height:64px;border-top:1px solid #edf1f5;color:#44576a;font-size:11px}.employee-name{display:flex;align-items:center;gap:10px}.employee-name .avatar{display:grid;width:32px;height:32px;place-items:center}.employee-name>span{display:flex;min-width:0;flex-direction:column}.employee-name strong{color:#23384e}.employee-name small{margin-top:3px;color:#93a0ae}.employee-row code{color:#60758b}.role-pill,.status-pill{width:max-content;padding:4px 8px;border-radius:12px}.role-pill{color:#1d6ab3;background:#eaf4ff}.role-pill.is-admin{color:#87580f;background:#fff2d6}.status-pill{color:#138657;background:#e8f8f1}.status-pill.is-disabled,.status-pill.is-locked{color:#a64b4b;background:#ffeded}.employee-actions{display:flex;gap:6px}.employee-actions button{padding:5px 9px;border:1px solid #d9e3ec;border-radius:4px;color:#4c6c88;background:#fff;cursor:pointer}.employee-actions button.is-danger{color:#c14a4a}.employee-actions button:disabled{cursor:not-allowed;opacity:.45}.admin-empty{padding:25px;text-align:center;color:#8796a6}
+.dashboard-page,.admin-page{height:100%;padding:24px;overflow:auto;background:#f3f6f9}.dashboard-hero{display:flex;align-items:center;justify-content:space-between;padding:34px;border-radius:12px;color:#fff;background:linear-gradient(125deg,#0b3d69,#1978d4);box-shadow:0 12px 30px rgb(19 80 137/18%)}.dashboard-hero span{font-size:10px;letter-spacing:.12em;opacity:.82}.dashboard-hero h2{margin:8px 0 5px;font-size:25px}.dashboard-hero p{margin:0;font-size:12px;opacity:.88}.dashboard-hero__badge{padding:8px 12px;border-radius:20px;background:rgb(255 255 255/16%)}.dashboard-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.dashboard-metrics article{display:flex;align-items:center;gap:14px;padding:20px;border:1px solid #e0e8ef;border-radius:9px;background:#fff}.dashboard-metrics svg{color:#1978d4}.dashboard-metrics span{display:flex;flex-direction:column}.dashboard-metrics b{color:#20364c;font-size:21px}.dashboard-metrics small{color:#8796a6}.dashboard-actions{display:flex;gap:12px;margin-top:18px}.dashboard-actions button{display:flex;align-items:center;gap:8px;padding:13px 18px;border:1px solid #d8e4ef;border-radius:7px;color:#346587;background:#fff;cursor:pointer}.admin-page__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px;padding:20px 22px;border:1px solid #dee7ef;border-radius:9px;background:#fff}.admin-page__header span{color:#1978d4;font-size:10px;font-weight:800}.admin-page__header h2{margin:4px 0;color:#20364c}.admin-page__header p{margin:0;color:#8a99a8;font-size:11px}.admin-readonly{margin-bottom:12px;padding:10px 13px;border:1px solid #f1d79c;border-radius:6px;color:#8a6416;background:#fff8e8;font-size:11px}.employee-table{overflow:hidden;border:1px solid #dfe7ef;border-radius:9px;background:#fff}.employee-table__head,.employee-row{display:grid;grid-template-columns:1.5fr 1fr .7fr .65fr .8fr;align-items:center;gap:12px;padding:12px 17px}.employee-table__head{color:#748598;background:#f5f8fb;font-size:10px;font-weight:700}.employee-row{min-height:64px;border-top:1px solid #edf1f5;color:#44576a;font-size:11px}.employee-name{display:flex;align-items:center;gap:10px}.employee-name .avatar{display:grid;width:32px;height:32px;place-items:center}.employee-name>span{display:flex;min-width:0;flex-direction:column}.employee-name strong{color:#23384e}.employee-name small{margin-top:3px;color:#93a0ae}.employee-row code{color:#60758b}.role-pill,.status-pill{width:max-content;padding:4px 8px;border-radius:12px}.role-pill{color:#1d6ab3;background:#eaf4ff}.role-pill.is-admin{color:#87580f;background:#fff2d6}.status-pill{color:#138657;background:#e8f8f1}.status-pill.is-disabled,.status-pill.is-locked{color:#a64b4b;background:#ffeded}.employee-actions{display:flex;gap:6px}.employee-actions button{padding:5px 9px;border:1px solid #d9e3ec;border-radius:4px;color:#4c6c88;background:#fff;cursor:pointer}.employee-actions button.is-danger{color:#c14a4a}.employee-actions button:disabled{cursor:not-allowed;opacity:.45}.admin-empty{padding:25px;text-align:center;color:#8796a6}
+
+.admin-tabs{display:flex;gap:10px;margin-bottom:16px}.admin-tab{display:flex;align-items:center;gap:7px;height:42px;padding:0 16px;border:1px solid #d9e2eb;border-radius:8px;color:#54687e;background:#fff;cursor:pointer;font-size:12px;font-weight:600;transition:all .15s ease}.admin-tab:hover{border-color:#b8c9d9;background:#f7fafc}.admin-tab.is-active{border-color:#2e86de;color:#fff;background:linear-gradient(135deg,#2e86de,#1978d4);box-shadow:0 6px 18px rgb(28 119 222/22%)}.admin-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;padding:12px 14px;border:1px solid #dfe7ef;border-radius:8px;background:#fff}.admin-toolbar__search{display:flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid #d9e2eb;border-radius:6px;background:#f8fafb;width:280px}.admin-toolbar__search svg{color:#8a99a8}.admin-toolbar__input{border:none;outline:none;background:transparent;color:#20364c;font-size:12px;width:100%}.admin-toolbar__input::placeholder{color:#a0b0bf}.admin-toolbar__button{display:flex;align-items:center;gap:6px;height:36px;padding:0 14px;border:none;border-radius:6px;color:#fff;background:linear-gradient(135deg,#2e86de,#1978d4);cursor:pointer;font-size:12px;font-weight:600;box-shadow:0 4px 12px rgb(28 119 222/18%)}.admin-toolbar__button:disabled{cursor:not-allowed;opacity:.5}.project-list-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;border:1px solid #e0e7ee;border-radius:9px;background:#fff;color:#7a8fa3;text-align:center}.project-list-placeholder svg{margin-bottom:16px;opacity:.6}.project-list-placeholder h3{margin:12px 0 6px;color:#34475d;font-size:16px}.project-list-placeholder p{margin:0;font-size:12px}.form-field .required{color:#e53935;margin-left:4px;font-size:12px}
diff --git a/frontend/app/styles/platform.css b/frontend/app/styles/platform.css
index de9e162..4181e9b 100644
--- a/frontend/app/styles/platform.css
+++ b/frontend/app/styles/platform.css
@@ -48,6 +48,37 @@ button {
     radial-gradient(circle at 10% 1%, rgb(28 105 186 / 25%), transparent 27%),
     #09233f;
   box-shadow: 5px 0 18px rgb(19 47 77 / 9%);
+  transition: width 0.2s ease, min-width 0.2s ease;
+}
+
+.sidebar.is-collapsed {
+  width: 70px;
+  min-width: 70px;
+}
+
+.sidebar.is-collapsed .brand__name,
+.sidebar.is-collapsed .sidebar-footer span,
+.sidebar.is-collapsed .nav-item span {
+  display: none;
+}
+
+.sidebar.is-collapsed .brand {
+  justify-content: center;
+  padding-left: 0;
+  padding-right: 0;
+}
+
+.sidebar.is-collapsed .sidebar-footer {
+  width: calc(100% - 18px);
+  justify-content: center;
+  padding-left: 17px;
+  padding-right: 17px;
+}
+
+.sidebar.is-collapsed .nav-item {
+  justify-content: center;
+  padding-left: 17px;
+  padding-right: 17px;
 }
 
 .brand {
@@ -194,6 +225,9 @@ button {
 
 .topbar-menu-wrap {
   position: relative;
+  display: flex;
+  align-items: center;
+  gap: 9px;
 }
 
 .topbar-dropdown {
@@ -328,7 +362,7 @@ button {
 }
 
 .user-menu__copy {
-  min-width: 55px;
+  min-width: 50px;
 }
 
 .avatar {