diff --git a/PACS_DICOM处理/数据处理网页端/app.py b/PACS_DICOM处理/数据处理网页端/app.py
index 23b4818..c3d66b6 100644
--- a/PACS_DICOM处理/数据处理网页端/app.py
+++ b/PACS_DICOM处理/数据处理网页端/app.py
@@ -67,7 +67,7 @@ WINDOWS = {
 
 BODY_PART_ORDER = ["head_neck", "chest", "upper_abdomen", "lower_abdomen", "pelvis"]
 BODY_PARTS = set(BODY_PART_ORDER)
-PHASES = {"arterial", "portal_venous", "delayed", "unknown", ""}
+PHASES = {"plain", "arterial", "portal_venous", "delayed", "unknown", ""}
 CHEST_WINDOWS = {"lung", "mediastinal", "unknown", ""}
 ROLES = {
     "管理员": ["查看DICOM", "编辑标注", "AI识别", "用户创建", "权限控制", "系统设置"],
@@ -1579,7 +1579,7 @@ def ai_classify(ct_number: str, series_uid: str, _: AIRequest, user: str = Depen
                 "可选部位键: head_neck(头颈部), chest(胸部), upper_abdomen(上腹部), "
                 "lower_abdomen(下腹部), pelvis(盆腔)。一个序列可包含多个部位。"
                 "如果不是可用于标注的平扫CT影像、定位像、剂量报告或无法判断，请 skipped=true。"
-                "如果包含上腹部，请判断期相: arterial(动脉期)、portal_venous(门静脉期)、delayed(延迟期)、unknown(无法判别)。"
+                "如果包含上腹部，请判断期相: plain(平扫)、arterial(动脉期)、portal_venous(门静脉期)、delayed(延迟期)、unknown(无法判别)。"
                 "如果包含胸部，请判断窗位: lung(肺窗)、mediastinal(纵隔窗)、unknown(无法判别)。"
                 "只返回JSON: {\"body_parts\":[],\"upper_abdomen_phase\":\"\",\"chest_window\":\"\",\"skipped\":false,\"notes\":\"\"}。"
                 f"PACS张数: {series_row.get('count', 0)}。"
diff --git a/PACS_DICOM处理/数据处理网页端/static/app.js b/PACS_DICOM处理/数据处理网页端/static/app.js
index 6ba8b9b..9ecfde9 100644
--- a/PACS_DICOM处理/数据处理网页端/static/app.js
+++ b/PACS_DICOM处理/数据处理网页端/static/app.js
@@ -121,7 +121,7 @@ function sortArrow(direction) {
 }
 
 function phaseLabel(value) {
-  return { arterial: "动脉期", portal_venous: "门静脉期", delayed: "延迟期", unknown: "无法判别" }[value] || "";
+  return { plain: "平扫", arterial: "动脉期", portal_venous: "门静脉期", delayed: "延迟期", unknown: "无法判别" }[value] || "";
 }
 
 function chestWindowLabel(value) {
diff --git a/PACS_DICOM处理/数据处理网页端/static/index.html b/PACS_DICOM处理/数据处理网页端/static/index.html
index 378d83a..2a50884 100644
--- a/PACS_DICOM处理/数据处理网页端/static/index.html
+++ b/PACS_DICOM处理/数据处理网页端/static/index.html
@@ -142,6 +142,7 @@
               <div id="phaseBox" class="phase-box">
                 <span>上腹部期相</span>
                 <div class="phase-options">
+                  <label><input name="phase" type="radio" value="plain" />平扫</label>
                   <label><input name="phase" type="radio" value="arterial" />动脉期</label>
                   <label><input name="phase" type="radio" value="portal_venous" />门静脉期</label>
                   <label><input name="phase" type="radio" value="delayed" />延迟期</label>
diff --git a/PACS_DICOM处理/数据处理网页端/static/styles.css b/PACS_DICOM处理/数据处理网页端/static/styles.css
index c69056b..7bb7e13 100644
--- a/PACS_DICOM处理/数据处理网页端/static/styles.css
+++ b/PACS_DICOM处理/数据处理网页端/static/styles.css
@@ -1055,6 +1055,7 @@ button:disabled {
   gap: 14px;
   margin: 0 auto;
   padding: 24px;
+  color: #132033;
 }
 
 .settings-page {
@@ -1091,6 +1092,22 @@ button:disabled {
   gap: 14px;
 }
 
+.settings-section {
+  border: 1px solid #dbe6f3;
+  color: #132033;
+  box-shadow: 0 12px 28px rgba(12, 24, 44, 0.1);
+}
+
+.settings-section h3,
+.settings-section strong,
+.settings-section label {
+  color: #132033;
+}
+
+.settings-title span {
+  color: #53677f;
+}
+
 .settings-form {
   display: grid;
   grid-template-columns: 1fr 1fr 140px 88px;
@@ -1105,6 +1122,10 @@ button:disabled {
   color: #132033;
 }
 
+.settings-form input::placeholder {
+  color: #64748b;
+}
+
 .settings-form button {
   border-radius: 8px;
   background: #1d5ff0;
@@ -1132,8 +1153,10 @@ button:disabled {
   width: 100%;
   border-collapse: collapse;
   overflow: hidden;
+  border: 1px solid #dce6f2;
   border-radius: 8px;
   background: white;
+  color: #132033;
   font-size: 13px;
 }
 
@@ -1145,10 +1168,18 @@ button:disabled {
 }
 
 .settings-table th {
-  color: #6f819a;
+  color: #41546b;
   font-weight: 700;
 }
 
+.settings-table td {
+  color: #1f2f46;
+}
+
+.settings-table tbody tr:nth-child(even) {
+  background: #f8fbff;
+}
+
 .role-grid {
   display: grid;
   grid-template-columns: repeat(3, minmax(0, 1fr));
@@ -1161,6 +1192,7 @@ button:disabled {
   border: 1px solid #dce5f1;
   border-radius: 8px;
   background: white;
+  color: #132033;
 }
 
 .role-card strong {
@@ -1171,7 +1203,7 @@ button:disabled {
 .role-card span,
 .settings-section dd,
 .settings-section dt {
-  color: #6f819a;
+  color: #53677f;
   font-size: 13px;
 }