feat: polish protocol-aware operator UI

apps/ui/src/styles.css

@@ -171,6 +171,11 @@ button {
   color: #52453e;
 }
 
+.field-hint {
+  color: #796b63;
+  font-size: 0.84rem;
+}
+
 .field-block input,
 .field-block textarea,
 .field-block select {
@@ -201,6 +206,11 @@ button {
   flex-wrap: wrap;
 }
 
+.body-copy {
+  margin: 0;
+  color: #5c4f48;
+}
+
 .button-primary,
 .button-secondary {
   display: inline-flex;
@@ -336,6 +346,91 @@ button {
   gap: 16px;
 }
 
+.detail-hero {
+  display: grid;
+  gap: 18px;
+}
+
+.detail-columns {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 24px;
+}
+
+.target-grid,
+.metadata-grid,
+.upload-grid,
+.service-grid {
+  display: grid;
+  gap: 16px;
+}
+
+.target-grid,
+.metadata-grid,
+.upload-grid {
+  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+}
+
+.target-card {
+  border-radius: 22px;
+  padding: 18px;
+  background: linear-gradient(180deg, rgba(245, 239, 231, 0.95), rgba(255, 251, 246, 0.92));
+  border: 1px solid rgba(30, 26, 23, 0.08);
+  display: grid;
+  gap: 6px;
+}
+
+.target-card span {
+  color: #75675f;
+  font-size: 0.84rem;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+}
+
+.target-card strong {
+  font-size: 0.96rem;
+  word-break: break-word;
+}
+
+.page-subsection {
+  display: grid;
+  gap: 16px;
+}
+
+.page-subsection-header {
+  display: grid;
+  gap: 4px;
+}
+
+.page-subsection-header h3,
+.service-card h3 {
+  margin: 0;
+}
+
+.page-subsection-header p,
+.service-card p {
+  margin: 0;
+  color: #6b5d55;
+}
+
+.protocol-selector-card {
+  border-radius: 24px;
+  padding: 20px;
+  background: linear-gradient(135deg, rgba(15, 117, 103, 0.08), rgba(234, 165, 91, 0.12));
+  border: 1px solid rgba(30, 26, 23, 0.08);
+}
+
+.protocol-brief {
+  display: grid;
+  align-content: start;
+  gap: 12px;
+}
+
+.protocol-brief p {
+  margin: 0;
+  color: #4e443f;
+}
+
 .summary-card {
   padding: 18px;
   display: grid;
@@ -376,6 +471,33 @@ button {
   overflow: hidden;
 }
 
+.service-card {
+  border-radius: 24px;
+  padding: 20px;
+  background: rgba(255, 252, 247, 0.92);
+  border: 1px solid rgba(30, 26, 23, 0.08);
+  display: grid;
+  gap: 18px;
+}
+
+.service-card-header,
+.service-method-top {
+  display: flex;
+  align-items: start;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.service-method-list {
+  display: grid;
+  gap: 18px;
+}
+
+.service-method {
+  display: grid;
+  gap: 12px;
+}
+
 .result-panel h3 {
   margin-top: 0;
 }
@@ -418,7 +540,8 @@ pre {
 
   .form-grid,
   .split-layout,
-  .result-grid {
+  .result-grid,
+  .detail-columns {
     grid-template-columns: 1fr;
   }