diff --git a/app/modules/project/templates/project/inbox.html b/app/modules/project/templates/project/inbox.html
index 98ffccf..5b76100 100644
--- a/app/modules/project/templates/project/inbox.html
+++ b/app/modules/project/templates/project/inbox.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260916c" />
+<link rel="stylesheet" href="/static/project.css?v=20260916d" />
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 {% endblock %}
 
@@ -45,5 +45,5 @@
   {% endif %}
 </div>
 
-<script src="/static/project.js?v=20260916e" defer></script>
+<script src="/static/project.js?v=20260916f" defer></script>
 {% endblock %}
diff --git a/app/modules/project/templates/project/index.html b/app/modules/project/templates/project/index.html
index fe1fe02..dad5632 100644
--- a/app/modules/project/templates/project/index.html
+++ b/app/modules/project/templates/project/index.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260916c" />
+<link rel="stylesheet" href="/static/project.css?v=20260916d" />
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 {% endblock %}
 
@@ -239,7 +239,7 @@
 
 <!-- 업무 편집 모달 — 카드/내 업무에서 클릭 시 페이지 이동 없이 팝업으로 편집 -->
 <div class="pj-modal" id="pj-modal-task" hidden>
-  <div class="pj-modal-card">
+  <div class="pj-modal-card pj-task-modal-card">
     <!-- 아사나처럼 큰 제목은 아래 무테 입력칸이 대신한다 — 이 표시는 작은
          모드 안내(새 업무/업무 편집)만 한다. -->
     <h3 id="pj-task-modal-title" class="pj-modal-kicker">업무 편집</h3>
@@ -247,94 +247,101 @@
     <input type="hidden" id="pj-t-project-id" />
     <input type="text" id="pj-t-title" class="pj-t-title-input" placeholder="업무 제목" />
 
-    <!-- 메타 정보 — 담당자·세션·우선순위·일정을 작은 칩 형태로 한 줄에 -->
-    <div class="pj-meta-row">
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">담당자</span>
-        <select id="pj-t-assignee"><option value="">불러오는 중…</option></select>
-      </div>
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">세션</span>
-        <select id="pj-t-stage"><option value="">불러오는 중…</option></select>
-      </div>
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">우선순위</span>
-        <select id="pj-t-priority">
-          <option value="low">낮음</option>
-          <option value="normal" selected>보통</option>
-          <option value="high">높음</option>
-        </select>
-      </div>
-    </div>
-    <div class="pj-meta-row">
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">시작일</span>
-        <input type="date" id="pj-t-start" />
-      </div>
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">마감일</span>
-        <input type="date" id="pj-t-due" />
-      </div>
-    </div>
-    <label class="pj-time-toggle">
-      <input type="checkbox" id="pj-t-usetime" /> 시간 지정 (체크 안 하면 종일)
-    </label>
-    <div class="pj-form-row" id="pj-time-row">
-      <label>시작 시간<input type="time" id="pj-t-stime" disabled /></label>
-      <label>마감 시간<input type="time" id="pj-t-dtime" disabled /></label>
-    </div>
-
-    <!-- 설명 -->
-    <div class="pj-desc-toolbar">
-      <span class="pj-extra-label">설명</span>
-      <label class="pj-upload-btn">이미지 추가<input type="file" id="pj-desc-img-input" accept="image/*" hidden /></label>
-      <span class="pj-muted-sm" id="pj-desc-hint"></span>
-    </div>
-    <div class="pj-desc-editor" id="pj-t-desc" contenteditable="true" data-placeholder="설명을 입력하세요… (이미지는 붙여넣기 또는 위 버튼으로 추가)"></div>
-
-    <div class="pj-task-extra" id="pj-subtask-block">
-      <div class="pj-extra-head">
-        <span class="material-symbols-outlined pj-gicon pj-gicon-sm">checklist</span> 하위 업무
-      </div>
-      <ul class="pj-subtask-list" id="pj-subtask-list"></ul>
-      <div class="pj-subtask-form">
-        <input type="text" id="pj-subtask-input" placeholder="하위 업무 추가…" />
-        <button type="button" class="pj-btn pj-btn-primary" id="pj-subtask-add">추가</button>
-      </div>
-    </div>
-    <div class="pj-task-extra" id="pj-attach-block">
-      <div class="pj-extra-head">
-        <span class="material-symbols-outlined pj-gicon pj-gicon-sm">attach_file</span> 첨부파일
-        <label class="pj-upload-btn">
-          파일 추가<input type="file" id="pj-attach-input" hidden />
+    <div class="pj-modal-body">
+      <div class="pj-modal-col-main">
+        <!-- 메타 정보 — 담당자·세션·우선순위·일정을 작은 칩 형태로 한 줄에 -->
+        <div class="pj-meta-row">
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">담당자</span>
+            <select id="pj-t-assignee"><option value="">불러오는 중…</option></select>
+          </div>
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">세션</span>
+            <select id="pj-t-stage"><option value="">불러오는 중…</option></select>
+          </div>
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">우선순위</span>
+            <select id="pj-t-priority">
+              <option value="low">낮음</option>
+              <option value="normal" selected>보통</option>
+              <option value="high">높음</option>
+            </select>
+          </div>
+        </div>
+        <div class="pj-meta-row">
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">시작일</span>
+            <input type="date" id="pj-t-start" />
+          </div>
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">마감일</span>
+            <input type="date" id="pj-t-due" />
+          </div>
+        </div>
+        <label class="pj-time-toggle">
+          <input type="checkbox" id="pj-t-usetime" /> 시간 지정 (체크 안 하면 종일)
         </label>
+        <div class="pj-form-row" id="pj-time-row">
+          <label>시작 시간<input type="time" id="pj-t-stime" disabled /></label>
+          <label>마감 시간<input type="time" id="pj-t-dtime" disabled /></label>
+        </div>
+
+        <!-- 설명 -->
+        <div class="pj-desc-toolbar">
+          <span class="pj-extra-label">설명</span>
+          <label class="pj-upload-btn">이미지 추가<input type="file" id="pj-desc-img-input" accept="image/*" hidden /></label>
+          <span class="pj-muted-sm" id="pj-desc-hint"></span>
+        </div>
+        <div class="pj-desc-editor" id="pj-t-desc" contenteditable="true" data-placeholder="설명을 입력하세요… (이미지는 붙여넣기 또는 위 버튼으로 추가)"></div>
       </div>
-      <ul class="pj-attach-list" id="pj-attach-list"></ul>
-    </div>
-    <div class="pj-task-extra" id="pj-links-block">
-      <div class="pj-extra-head">
-        <span class="material-symbols-outlined pj-gicon pj-gicon-sm">link</span> 연결된 프로젝트
-        <button type="button" class="pj-upload-btn" id="pj-link-add-btn">+ 프로젝트에 추가</button>
-      </div>
-      <div class="pj-link-chips" id="pj-link-chips"></div>
-      <div class="pj-link-form" id="pj-link-form" hidden>
-        <select id="pj-link-project"><option value="">프로젝트 선택…</option></select>
-        <select id="pj-link-stage"><option value="">세션 선택…</option></select>
-        <button type="button" class="pj-btn pj-btn-primary" id="pj-link-save">추가</button>
-        <button type="button" class="pj-btn" id="pj-link-cancel">취소</button>
-      </div>
-    </div>
-    <!-- 댓글(활동) — 아사나처럼 맨 아래 -->
-    <div class="pj-task-extra" id="pj-comment-block">
-      <div class="pj-extra-head">
-        <span class="pj-cmt-emoji">💬</span> 댓글
-      </div>
-      <ul class="pj-comment-list" id="pj-comment-list"></ul>
-      <div class="pj-comment-form">
-        <input type="text" id="pj-comment-input" placeholder="댓글 입력…" />
-        <button type="button" class="pj-btn pj-btn-primary" id="pj-comment-send">등록</button>
+
+      <div class="pj-modal-col-side">
+        <div class="pj-task-extra" id="pj-subtask-block">
+          <div class="pj-extra-head">
+            <span class="material-symbols-outlined pj-gicon pj-gicon-sm">checklist</span> 하위 업무
+          </div>
+          <ul class="pj-subtask-list" id="pj-subtask-list"></ul>
+          <div class="pj-subtask-form">
+            <input type="text" id="pj-subtask-input" placeholder="하위 업무 제목…" />
+            <select id="pj-subtask-add-assignee"><option value="">(미지정)</option></select>
+            <input type="date" id="pj-subtask-add-due" />
+            <button type="button" class="pj-btn pj-btn-primary" id="pj-subtask-add">추가</button>
+          </div>
+        </div>
+        <div class="pj-task-extra" id="pj-attach-block">
+          <div class="pj-extra-head">
+            <span class="material-symbols-outlined pj-gicon pj-gicon-sm">attach_file</span> 첨부파일
+            <label class="pj-upload-btn">
+              파일 추가<input type="file" id="pj-attach-input" hidden />
+            </label>
+          </div>
+          <ul class="pj-attach-list" id="pj-attach-list"></ul>
+        </div>
+        <div class="pj-task-extra" id="pj-links-block">
+          <div class="pj-extra-head">
+            <span class="material-symbols-outlined pj-gicon pj-gicon-sm">link</span> 연결된 프로젝트
+          </div>
+          <div class="pj-link-chips" id="pj-link-chips"></div>
+          <div class="pj-link-form" id="pj-link-form">
+            <select id="pj-link-project"><option value="">프로젝트 선택…</option></select>
+            <select id="pj-link-stage"><option value="">세션 선택…</option></select>
+            <button type="button" class="pj-btn pj-btn-primary" id="pj-link-save">추가</button>
+          </div>
+        </div>
+        <!-- 댓글(활동) — 아사나처럼 맨 아래 -->
+        <div class="pj-task-extra" id="pj-comment-block">
+          <div class="pj-extra-head">
+            <span class="pj-cmt-emoji">💬</span> 댓글
+          </div>
+          <ul class="pj-comment-list" id="pj-comment-list"></ul>
+          <div class="pj-comment-form">
+            <input type="text" id="pj-comment-input" placeholder="댓글 입력…" />
+            <button type="button" class="pj-btn pj-btn-primary" id="pj-comment-send">등록</button>
+          </div>
+        </div>
       </div>
     </div>
+
     <div class="pj-modal-actions">
       <button type="button" class="pj-btn pj-btn-danger" id="pj-delete-task">삭제</button>
       <span style="flex:1"></span>
@@ -366,5 +373,5 @@
 <script>
   window.PJ_COLORS = {{ ["#4573d2","#37a3a3","#62a420","#e8a33d","#e8384f","#aa62e3","#f06a6a","#5a6772"] | tojson }};
 </script>
-<script src="/static/project.js?v=20260916e" defer></script>
+<script src="/static/project.js?v=20260916f" defer></script>
 {% endblock %}
diff --git a/app/modules/project/templates/project/project.html b/app/modules/project/templates/project/project.html
index 82b3904..de8f7b5 100644
--- a/app/modules/project/templates/project/project.html
+++ b/app/modules/project/templates/project/project.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260916c" />
+<link rel="stylesheet" href="/static/project.css?v=20260916d" />
 <!-- 구글 머티리얼 심볼(담당자 아이콘 등) — self-host -->
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 <!-- 타임라인 vis-timeline — self-host -->
@@ -157,116 +157,122 @@
 
 <!-- 업무 모달 -->
 <div class="pj-modal" id="pj-modal-task" hidden>
-  <div class="pj-modal-card">
+  <div class="pj-modal-card pj-task-modal-card">
     <!-- 아사나처럼 큰 제목은 아래 무테 입력칸이 대신한다 — 이 표시는 작은
          모드 안내(새 업무/업무 편집)만 한다. -->
     <h3 id="pj-task-modal-title" class="pj-modal-kicker">새 업무</h3>
     <input type="hidden" id="pj-t-id" />
     <input type="text" id="pj-t-title" class="pj-t-title-input" placeholder="업무 제목" />
 
-    <!-- 메타 정보 — 담당자·세션·우선순위·일정을 작은 칩 형태로 한 줄에 -->
-    <div class="pj-meta-row">
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">담당자</span>
-        <select id="pj-t-assignee">
-          <option value="">(미지정)</option>
-          {% for m in members %}
-          <option value="{{ m.user_email }}" data-name="{{ m.user_email.split('@')[0] }}">
-            {{ m.user_email.split('@')[0] }}
-          </option>
-          {% endfor %}
-        </select>
-      </div>
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">세션</span>
-        <select id="pj-t-stage">
-          {% for s in stages %}
-          <option value="{{ s.id }}">{{ s.name }}</option>
-          {% endfor %}
-        </select>
-      </div>
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">우선순위</span>
-        <select id="pj-t-priority">
-          <option value="low">낮음</option>
-          <option value="normal" selected>보통</option>
-          <option value="high">높음</option>
-        </select>
-      </div>
-    </div>
-    <div class="pj-meta-row">
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">시작일</span>
-        <input type="date" id="pj-t-start" />
-      </div>
-      <div class="pj-meta-field">
-        <span class="pj-meta-label">마감일</span>
-        <input type="date" id="pj-t-due" />
-      </div>
-    </div>
-    <label class="pj-time-toggle">
-      <input type="checkbox" id="pj-t-usetime" /> 시간 지정 (체크 안 하면 종일)
-    </label>
-    <div class="pj-form-row" id="pj-time-row">
-      <label>시작 시간<input type="time" id="pj-t-stime" disabled /></label>
-      <label>마감 시간<input type="time" id="pj-t-dtime" disabled /></label>
-    </div>
-
-    <!-- 설명 -->
-    <div class="pj-desc-toolbar">
-      <span class="pj-extra-label">설명</span>
-      <label class="pj-upload-btn">이미지 추가<input type="file" id="pj-desc-img-input" accept="image/*" hidden /></label>
-      <span class="pj-muted-sm" id="pj-desc-hint"></span>
-    </div>
-    <div class="pj-desc-editor" id="pj-t-desc" contenteditable="true" data-placeholder="설명을 입력하세요… (이미지는 붙여넣기 또는 위 버튼으로 추가)"></div>
-
-    <!-- 하위 업무 (기존 업무 편집 시에만) -->
-    <div class="pj-task-extra" id="pj-subtask-block" hidden>
-      <div class="pj-extra-head">
-        <span class="material-symbols-outlined pj-gicon pj-gicon-sm">checklist</span> 하위 업무
-      </div>
-      <ul class="pj-subtask-list" id="pj-subtask-list"></ul>
-      <div class="pj-subtask-form">
-        <input type="text" id="pj-subtask-input" placeholder="하위 업무 추가…" />
-        <button type="button" class="pj-btn pj-btn-primary" id="pj-subtask-add">추가</button>
-      </div>
-    </div>
-
-    <!-- 첨부파일 (기존 업무 편집 시에만) -->
-    <div class="pj-task-extra" id="pj-attach-block" hidden>
-      <div class="pj-extra-head">
-        <span class="material-symbols-outlined pj-gicon pj-gicon-sm">attach_file</span> 첨부파일
-        <label class="pj-upload-btn">
-          파일 추가<input type="file" id="pj-attach-input" hidden />
+    <div class="pj-modal-body">
+      <div class="pj-modal-col-main">
+        <!-- 메타 정보 — 담당자·세션·우선순위·일정을 작은 칩 형태로 한 줄에 -->
+        <div class="pj-meta-row">
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">담당자</span>
+            <select id="pj-t-assignee">
+              <option value="">(미지정)</option>
+              {% for m in members %}
+              <option value="{{ m.user_email }}" data-name="{{ m.user_email.split('@')[0] }}">
+                {{ m.user_email.split('@')[0] }}
+              </option>
+              {% endfor %}
+            </select>
+          </div>
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">세션</span>
+            <select id="pj-t-stage">
+              {% for s in stages %}
+              <option value="{{ s.id }}">{{ s.name }}</option>
+              {% endfor %}
+            </select>
+          </div>
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">우선순위</span>
+            <select id="pj-t-priority">
+              <option value="low">낮음</option>
+              <option value="normal" selected>보통</option>
+              <option value="high">높음</option>
+            </select>
+          </div>
+        </div>
+        <div class="pj-meta-row">
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">시작일</span>
+            <input type="date" id="pj-t-start" />
+          </div>
+          <div class="pj-meta-field">
+            <span class="pj-meta-label">마감일</span>
+            <input type="date" id="pj-t-due" />
+          </div>
+        </div>
+        <label class="pj-time-toggle">
+          <input type="checkbox" id="pj-t-usetime" /> 시간 지정 (체크 안 하면 종일)
         </label>
-      </div>
-      <ul class="pj-attach-list" id="pj-attach-list"></ul>
-    </div>
+        <div class="pj-form-row" id="pj-time-row">
+          <label>시작 시간<input type="time" id="pj-t-stime" disabled /></label>
+          <label>마감 시간<input type="time" id="pj-t-dtime" disabled /></label>
+        </div>
 
-    <!-- 연결된 프로젝트 — 멀티호밍(아사나식). 기존 업무 편집 시에만 -->
-    <div class="pj-task-extra" id="pj-links-block" hidden>
-      <div class="pj-extra-head">
-        <span class="material-symbols-outlined pj-gicon pj-gicon-sm">link</span> 연결된 프로젝트
-        <button type="button" class="pj-upload-btn" id="pj-link-add-btn">+ 프로젝트에 추가</button>
+        <!-- 설명 -->
+        <div class="pj-desc-toolbar">
+          <span class="pj-extra-label">설명</span>
+          <label class="pj-upload-btn">이미지 추가<input type="file" id="pj-desc-img-input" accept="image/*" hidden /></label>
+          <span class="pj-muted-sm" id="pj-desc-hint"></span>
+        </div>
+        <div class="pj-desc-editor" id="pj-t-desc" contenteditable="true" data-placeholder="설명을 입력하세요… (이미지는 붙여넣기 또는 위 버튼으로 추가)"></div>
       </div>
-      <div class="pj-link-chips" id="pj-link-chips"></div>
-      <div class="pj-link-form" id="pj-link-form" hidden>
-        <select id="pj-link-project"><option value="">프로젝트 선택…</option></select>
-        <select id="pj-link-stage"><option value="">세션 선택…</option></select>
-        <button type="button" class="pj-btn pj-btn-primary" id="pj-link-save">추가</button>
-        <button type="button" class="pj-btn" id="pj-link-cancel">취소</button>
-      </div>
-    </div>
 
-    <!-- 댓글(활동) — 아사나처럼 맨 아래. 기존 업무 편집 시에만 -->
-    <div class="pj-task-extra" id="pj-comment-block" hidden>
-      <div class="pj-extra-head">
-        <span class="pj-cmt-emoji">💬</span> 댓글
-      </div>
-      <ul class="pj-comment-list" id="pj-comment-list"></ul>
-      <div class="pj-comment-form">
-        <input type="text" id="pj-comment-input" placeholder="댓글 입력…" />
-        <button type="button" class="pj-btn pj-btn-primary" id="pj-comment-send">등록</button>
+      <div class="pj-modal-col-side">
+        <!-- 하위 업무 (기존 업무 편집 시에만) -->
+        <div class="pj-task-extra" id="pj-subtask-block" hidden>
+          <div class="pj-extra-head">
+            <span class="material-symbols-outlined pj-gicon pj-gicon-sm">checklist</span> 하위 업무
+          </div>
+          <ul class="pj-subtask-list" id="pj-subtask-list"></ul>
+          <div class="pj-subtask-form">
+            <input type="text" id="pj-subtask-input" placeholder="하위 업무 제목…" />
+            <select id="pj-subtask-add-assignee"><option value="">(미지정)</option></select>
+            <input type="date" id="pj-subtask-add-due" />
+            <button type="button" class="pj-btn pj-btn-primary" id="pj-subtask-add">추가</button>
+          </div>
+        </div>
+
+        <!-- 첨부파일 (기존 업무 편집 시에만) -->
+        <div class="pj-task-extra" id="pj-attach-block" hidden>
+          <div class="pj-extra-head">
+            <span class="material-symbols-outlined pj-gicon pj-gicon-sm">attach_file</span> 첨부파일
+            <label class="pj-upload-btn">
+              파일 추가<input type="file" id="pj-attach-input" hidden />
+            </label>
+          </div>
+          <ul class="pj-attach-list" id="pj-attach-list"></ul>
+        </div>
+
+        <!-- 연결된 프로젝트 — 멀티호밍(아사나식). 기존 업무 편집 시에만 -->
+        <div class="pj-task-extra" id="pj-links-block" hidden>
+          <div class="pj-extra-head">
+            <span class="material-symbols-outlined pj-gicon pj-gicon-sm">link</span> 연결된 프로젝트
+          </div>
+          <div class="pj-link-chips" id="pj-link-chips"></div>
+          <div class="pj-link-form" id="pj-link-form">
+            <select id="pj-link-project"><option value="">프로젝트 선택…</option></select>
+            <select id="pj-link-stage"><option value="">세션 선택…</option></select>
+            <button type="button" class="pj-btn pj-btn-primary" id="pj-link-save">추가</button>
+          </div>
+        </div>
+
+        <!-- 댓글(활동) — 아사나처럼 맨 아래. 기존 업무 편집 시에만 -->
+        <div class="pj-task-extra" id="pj-comment-block" hidden>
+          <div class="pj-extra-head">
+            <span class="pj-cmt-emoji">💬</span> 댓글
+          </div>
+          <ul class="pj-comment-list" id="pj-comment-list"></ul>
+          <div class="pj-comment-form">
+            <input type="text" id="pj-comment-input" placeholder="댓글 입력…" />
+            <button type="button" class="pj-btn pj-btn-primary" id="pj-comment-send">등록</button>
+          </div>
+        </div>
       </div>
     </div>
 
@@ -320,5 +326,5 @@
 </script>
 
 <script src="/static/vendor/vis-timeline/vis-timeline-graph2d.min.js"></script>
-<script src="/static/project.js?v=20260916e" defer></script>
+<script src="/static/project.js?v=20260916f" defer></script>
 {% endblock %}
diff --git a/app/static/project.css b/app/static/project.css
index 8c975e2..6a0fe10 100644
--- a/app/static/project.css
+++ b/app/static/project.css
@@ -310,6 +310,18 @@
 .pj-modal { position: fixed; inset: 0; background: rgba(20,22,26,.46); display: flex; align-items: center; justify-content: center; z-index: 1000; }
 .pj-modal[hidden] { display: none; }
 .pj-modal-card { background: #fff; border-radius: 16px; padding: 22px; width: min(480px, 92vw); box-shadow: 0 20px 60px rgba(0,0,0,.25); max-height: 90vh; overflow-y: auto; }
+/* 업무 편집 팝업만 넓게 — 메타/설명(좌) + 하위업무·첨부·연결·댓글(우) 2단.
+   우측 칼럼만 자체 스크롤 시켜 팝업 전체 스크롤은 웬만하면 안 생기게 한다. */
+.pj-task-modal-card { width: min(780px, 96vw); }
+.pj-modal-body { display: grid; grid-template-columns: 1.15fr .85fr; gap: 0 26px; align-items: start; }
+.pj-modal-col-main, .pj-modal-col-side { min-width: 0; }
+.pj-modal-col-side { max-height: 66vh; overflow-y: auto; padding-right: 4px; }
+.pj-modal-col-side .pj-task-extra:first-child { margin-top: 0; padding-top: 0; border-top: none; }
+@media (max-width: 720px) {
+  .pj-modal-body { grid-template-columns: 1fr; }
+  .pj-modal-col-side { max-height: none; overflow-y: visible; padding-right: 0; }
+  .pj-modal-col-side .pj-task-extra:first-child { border-top: 1px solid #eef0f2; margin-top: 14px; padding-top: 12px; }
+}
 .pj-modal-card h3 { margin: 0 0 16px; font-size: 17px; }
 .pj-modal-hint { margin: -6px 0 14px; font-size: 12px; color: #6b7280; }
 
@@ -484,8 +496,19 @@
   flex: 0 0 auto; width: 110px !important; font-size: 12px !important; padding: 4px 6px !important; margin: 0 !important;
 }
 .pj-subtask-due { flex: 0 0 auto; width: 128px !important; font-size: 12px !important; padding: 4px 6px !important; margin: 0 !important; }
-.pj-subtask-form { display: flex; gap: 6px; }
-.pj-subtask-form input { flex: 1; padding: 7px 10px; border: 1px solid #d8dce2; border-radius: 8px; font-size: 13px; font-family: inherit; }
+.pj-subtask-form { display: flex; gap: 6px; flex-wrap: wrap; }
+.pj-subtask-form input[type="text"] {
+  flex: 1 1 120px; width: auto !important; min-width: 90px; margin: 0 !important;
+  padding: 7px 10px !important; border: 1px solid #d8dce2 !important; border-radius: 8px; font-size: 13px !important; font-family: inherit;
+}
+#pj-subtask-add-assignee {
+  flex: 0 0 auto; width: 96px !important; margin: 0 !important;
+  padding: 6px 4px !important; border: 1px solid #d8dce2 !important; border-radius: 8px; font-size: 12px !important; font-family: inherit;
+}
+#pj-subtask-add-due {
+  flex: 0 0 auto; width: 118px !important; margin: 0 !important;
+  padding: 6px !important; border: 1px solid #d8dce2 !important; border-radius: 8px; font-size: 12px !important; font-family: inherit;
+}
 
 /* ── 연결된 프로젝트(멀티호밍) 칩 ── */
 .pj-link-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
diff --git a/app/static/project.js b/app/static/project.js
index 194ff11..336a8fa 100644
--- a/app/static/project.js
+++ b/app/static/project.js
@@ -1983,6 +1983,8 @@
     const listEl = el("pj-subtask-list");
     if (!listEl) return null;
     const input = el("pj-subtask-input");
+    const addAssignee = el("pj-subtask-add-assignee");
+    const addDue = el("pj-subtask-add-due");
     const addBtn = el("pj-subtask-add");
     let taskId = null, projectId = null, canDeleteFn = function () { return false; }, onChange = null;
 
@@ -2056,10 +2058,17 @@
       const title = (input.value || "").trim();
       if (!title) return;
       if (!taskId) { alert("먼저 업무를 저장한 뒤 하위 업무를 추가할 수 있습니다."); return; }
+      const assigneeOpt = addAssignee ? addAssignee.selectedOptions[0] : null;
       try {
-        const res = await api("POST", "/project/api/projects/" + projectId + "/tasks",
-          { title: title, parent_task_id: taskId });
+        const res = await api("POST", "/project/api/projects/" + projectId + "/tasks", {
+          title: title, parent_task_id: taskId,
+          assignee_email: addAssignee ? addAssignee.value : "",
+          assignee_name: assigneeOpt ? assigneeOpt.textContent : "",
+          due_date: addDue ? (addDue.value || null) : null,
+        });
         input.value = "";
+        if (addAssignee) addAssignee.value = "";
+        if (addDue) addDue.value = "";
         const optionsHtml = await membersOptionsHtml(projectId);
         const empty = listEl.querySelector(".pj-empty-sm");
         if (empty) empty.remove();
@@ -2076,6 +2085,11 @@
         taskId = opts.taskId; projectId = opts.projectId;
         canDeleteFn = opts.canDelete || function () { return false; };
         onChange = opts.onChange || null;
+        if (addAssignee && projectId) {
+          membersOptionsHtml(projectId).then(function (html) {
+            addAssignee.innerHTML = "<option value=''>(미지정)</option>" + html;
+          });
+        }
       },
       render: render,
     };
@@ -2085,12 +2099,9 @@
   function initLinksBlock() {
     const chipsEl = el("pj-link-chips");
     if (!chipsEl) return null;
-    const addBtn = el("pj-link-add-btn");
-    const form = el("pj-link-form");
     const projSel = el("pj-link-project");
     const stageSel = el("pj-link-stage");
     const saveBtn = el("pj-link-save");
-    const cancelBtn = el("pj-link-cancel");
     let taskId = null, homeProjectId = null, onChange = null;
 
     function chipEl(link) {
@@ -2117,8 +2128,7 @@
       links.forEach(function (l) { chipsEl.appendChild(chipEl(l)); });
     }
 
-    if (addBtn) addBtn.addEventListener("click", async function () {
-      form.hidden = false;
+    async function loadProjects() {
       projSel.innerHTML = "<option value=''>불러오는 중…</option>";
       stageSel.innerHTML = "<option value=''>프로젝트를 먼저 선택하세요</option>";
       try {
@@ -2130,8 +2140,7 @@
           return '<option value="' + p.id + '">' + escapeHtml(p.name) + "</option>";
         }).join("");
       } catch (e) { projSel.innerHTML = "<option value=''>불러오기 실패</option>"; }
-    });
-    if (cancelBtn) cancelBtn.addEventListener("click", function () { form.hidden = true; });
+    }
     if (projSel) projSel.addEventListener("change", async function () {
       const pid = parseInt(projSel.value, 10);
       if (!pid) { stageSel.innerHTML = "<option value=''>프로젝트를 먼저 선택하세요</option>"; return; }
@@ -2150,7 +2159,8 @@
       try {
         await api("POST", "/project/api/tasks/" + taskId + "/links",
           { project_id: pid, stage_id: stageSel.value ? parseInt(stageSel.value, 10) : null });
-        form.hidden = true;
+        projSel.value = "";
+        stageSel.innerHTML = "<option value=''>프로젝트를 먼저 선택하세요</option>";
         if (onChange) onChange();
       } catch (e) { alert("추가 실패: " + e.message); }
     });
@@ -2158,7 +2168,7 @@
     return {
       setContext: function (opts) {
         taskId = opts.taskId; homeProjectId = opts.projectId; onChange = opts.onChange || null;
-        form.hidden = true;
+        loadProjects();
       },
       render: render,
     };