优化一下ui

src/components/Export/ExportDateRangeDialog.scss

@@ -192,7 +192,18 @@
   }
 }
 
-.export-date-range-time-input {
+.export-date-range-time-select {
+  position: relative;
+  width: 100%;
+
+  &.open .export-date-range-time-trigger {
+    border-color: var(--primary);
+    box-shadow: 0 0 0 1px rgba(var(--primary-rgb), 0.18);
+    color: var(--primary);
+  }
+}
+
+.export-date-range-time-trigger {
   width: 100%;
   min-width: 0;
   border-radius: 8px;
@@ -203,20 +214,125 @@
   padding: 0 9px;
   font-size: 12px;
   font-family: inherit;
+  display: inline-flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+  cursor: pointer;
+  transition: border-color 0.15s ease, box-shadow 0.15s ease, color 0.15s ease;
 
   &:focus {
     outline: none;
     border-color: var(--primary);
     box-shadow: 0 0 0 1px rgba(var(--primary-rgb), 0.18);
   }
+}
 
-  &::-webkit-calendar-picker-indicator {
-    cursor: pointer;
-    opacity: 0.6;
-    &:hover {
-      opacity: 1;
-    }
+.export-date-range-time-trigger-value {
+  flex: 1;
+  min-width: 0;
+  text-align: left;
+}
+
+.export-date-range-time-dropdown {
+  position: absolute;
+  top: calc(100% + 6px);
+  left: 0;
+  right: 0;
+  z-index: 24;
+  border: 1px solid var(--border-color);
+  border-radius: 12px;
+  background: color-mix(in srgb, var(--bg-primary) 88%, var(--bg-secondary));
+  box-shadow: var(--shadow-md);
+  padding: 8px;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  backdrop-filter: blur(14px);
+  -webkit-backdrop-filter: blur(14px);
+}
+
+.export-date-range-time-dropdown-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+
+  span {
+    font-size: 11px;
+    color: var(--text-secondary);
   }
+
+  strong {
+    font-size: 13px;
+    color: var(--text-primary);
+  }
+}
+
+.export-date-range-time-quick-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+
+.export-date-range-time-quick-item,
+.export-date-range-time-option {
+  border: 1px solid transparent;
+  border-radius: 8px;
+  background: transparent;
+  color: var(--text-primary);
+  cursor: pointer;
+  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
+
+  &:hover {
+    background: var(--bg-tertiary);
+  }
+
+  &.active {
+    border-color: rgba(var(--primary-rgb), 0.28);
+    background: rgba(var(--primary-rgb), 0.12);
+    color: var(--primary);
+  }
+}
+
+.export-date-range-time-quick-item {
+  min-width: 52px;
+  height: 28px;
+  padding: 0 10px;
+  font-size: 11px;
+}
+
+.export-date-range-time-columns {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 8px;
+}
+
+.export-date-range-time-column {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  min-width: 0;
+}
+
+.export-date-range-time-column-label {
+  font-size: 11px;
+  color: var(--text-secondary);
+}
+
+.export-date-range-time-column-list {
+  max-height: 168px;
+  overflow-y: auto;
+  padding-right: 2px;
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 4px;
+}
+
+.export-date-range-time-option {
+  min-height: 28px;
+  padding: 0 8px;
+  font-size: 11px;
 }
 
 .export-date-range-calendar-nav {