重构后端，改为 node 技术栈

frontend/src/views/login/index.vue

@@ -217,11 +217,11 @@ const handleSubmit = async () => {
   max-width: 420px;
   padding: 44px 40px 36px;
   border-radius: 24px;
-  background: linear-gradient(165deg, #fafbfc 0%, #f0f3f8 100%);
+  background: #1e293b;
+  border: 1px solid rgba(148, 163, 184, 0.12);
   box-shadow:
-    0 4px 6px -1px rgba(15, 23, 42, 0.06),
-    0 25px 50px -12px rgba(0, 0, 0, 0.42),
-    0 0 0 1px rgba(255, 255, 255, 0.65) inset;
+    0 4px 6px -1px rgba(0, 0, 0, 0.2),
+    0 25px 50px -12px rgba(0, 0, 0, 0.5);
 }
 
 .logo-ring {
@@ -232,11 +232,11 @@ const handleSubmit = async () => {
   align-items: center;
   justify-content: center;
   border-radius: 16px;
-  color: #1e3a5f;
-  background: linear-gradient(145deg, #e8eef6 0%, #dce5f0 100%);
+  color: #38bdf8;
+  background: linear-gradient(145deg, #0f172a 0%, #1e293b 100%);
   box-shadow:
-    0 2px 8px rgba(30, 58, 95, 0.12),
-    0 0 0 1px rgba(255, 255, 255, 0.9) inset;
+    0 2px 8px rgba(56, 189, 248, 0.15),
+    0 0 0 1px rgba(56, 189, 248, 0.2) inset;
 }
 
 .title {
@@ -245,14 +245,14 @@ const handleSubmit = async () => {
   font-size: 26px;
   font-weight: 700;
   letter-spacing: -0.02em;
-  color: #0f172a;
+  color: #e2e8f0;
 }
 
 .subtitle {
   margin: 10px 0 0;
   text-align: center;
   font-size: 13px;
-  color: #64748b;
+  color: #94a3b8;
   font-weight: 500;
 }
 
@@ -267,7 +267,7 @@ const handleSubmit = async () => {
 .field-label {
   font-size: 12px;
   font-weight: 600;
-  color: #475569;
+  color: #94a3b8;
   letter-spacing: 0.02em;
 }
 
@@ -283,8 +283,8 @@ const handleSubmit = async () => {
 
 .glass-input :deep(.el-input__wrapper) {
   border-radius: 14px;
-  background-color: #eef1f6;
-  box-shadow: none;
+  background-color: #0f172a !important;
+  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.15) inset !important;
   border: 1px solid transparent;
   transition:
     box-shadow 0.2s ease,
@@ -293,25 +293,26 @@ const handleSubmit = async () => {
 }
 
 .glass-input :deep(.el-input__wrapper:hover) {
-  background-color: #e8ecf2;
+  background-color: #1e293b !important;
+  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.25) inset !important;
 }
 
 .glass-input :deep(.el-input__wrapper.is-focus) {
-  background-color: #fff;
+  background-color: #0f172a !important;
   border-color: rgba(56, 189, 248, 0.45);
-  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22);
+  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22) !important;
 }
 
 .glass-input :deep(.el-input__inner) {
-  color: #0f172a;
+  color: #e2e8f0 !important;
 }
 
 .glass-input :deep(.el-input__inner::placeholder) {
-  color: #94a3b8;
+  color: #64748b !important;
 }
 
 .glass-input :deep(.el-input__prefix) {
-  color: #64748b;
+  color: #94a3b8 !important;
 }
 
 .btn-wrap {
@@ -333,21 +334,17 @@ const handleSubmit = async () => {
   font-weight: 700;
   letter-spacing: 0.12em;
   color: #fff !important;
-  background: linear-gradient(92deg, #38bdf8 0%, #4f8ff7 38%, #6366f1 72%, #7c3aed 100%) !important;
-  box-shadow:
-    0 10px 28px rgba(56, 189, 248, 0.38),
-    0 4px 12px rgba(99, 102, 241, 0.25);
+  background: #38bdf8 !important;
+  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.3);
   transition:
     transform 0.15s ease,
     box-shadow 0.2s ease,
-    filter 0.2s ease;
+    background 0.2s ease;
 }
 
 .login-btn:hover {
-  filter: brightness(1.05);
-  box-shadow:
-    0 14px 36px rgba(56, 189, 248, 0.45),
-    0 6px 16px rgba(99, 102, 241, 0.3);
+  background: #22d3ee !important;
+  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
 }
 
 .login-btn:active {

frontend/src/views/model/index.vue

@@ -842,7 +842,7 @@ onMounted(() => {
 .title {
   font-size: 18px;
   font-weight: 600;
-  color: #333;
+  color: #e2e8f0;
 }
 
 .pagination {
@@ -913,7 +913,7 @@ onMounted(() => {
 .step-label {
   font-size: 15px;
   font-weight: 600;
-  color: #0f172a;
+  color: #e2e8f0;
 }
 
 .step-status {