diff --git a/web/src/assets/styles/views/overview-view.css b/web/src/assets/styles/views/overview-view.css
index e9f8d60..b2f7600 100644
--- a/web/src/assets/styles/views/overview-view.css
+++ b/web/src/assets/styles/views/overview-view.css
@@ -1,6 +1,8 @@
 .dashboard {
+  min-width: 0;
   display: grid;
   gap: 16px;
+  padding-bottom: 10px;
   animation: fadeUp 260ms var(--ease) both;
 }
 
@@ -350,6 +352,32 @@
   }
 }
 
+@media (max-width: 1440px) {
+  .dashboard {
+    gap: 14px;
+  }
+
+  .kpi-grid {
+    gap: 10px;
+  }
+
+  .content-grid {
+    gap: 18px;
+  }
+
+  .dashboard-card {
+    padding: 18px;
+  }
+
+  .card-head {
+    margin-bottom: 14px;
+  }
+
+  .card-head h3 {
+    font-size: 15px;
+  }
+}
+
 @media (max-width: 860px) {
   .kpi-grid,
   .content-grid {
diff --git a/web/src/assets/styles/views/travel-reimbursement-create-view.css b/web/src/assets/styles/views/travel-reimbursement-create-view.css
index 7d46179..ec23d75 100644
--- a/web/src/assets/styles/views/travel-reimbursement-create-view.css
+++ b/web/src/assets/styles/views/travel-reimbursement-create-view.css
@@ -4,46 +4,58 @@
   z-index: 9999;
   display: grid;
   place-items: center;
-  background: rgba(236, 243, 248, 0.42);
-  backdrop-filter: blur(16px);
-  -webkit-backdrop-filter: blur(16px);
+  background:
+    radial-gradient(circle at 18% 14%, rgba(16, 185, 129, 0.18), transparent 24%),
+    radial-gradient(circle at 82% 12%, rgba(59, 130, 246, 0.12), transparent 28%),
+    rgba(97, 110, 131, 0.34);
+  backdrop-filter: blur(18px) saturate(1.02);
+  -webkit-backdrop-filter: blur(18px) saturate(1.02);
 }
 
 .assistant-modal {
-  --assistant-base-width: 1430px;
-  --assistant-base-height: 820px;
-  --assistant-visual-scale: 1;
-  --assistant-scale: calc(var(--assistant-visual-scale) * var(--desktop-ui-inverse-scale, 1));
-  width: calc(var(--assistant-base-width) * var(--assistant-scale));
-  height: calc(var(--assistant-base-height) * var(--assistant-scale));
+  --assistant-base-width: 1430;
+  --assistant-base-height: 820;
+  --assistant-base-width-px: 1430px;
+  --assistant-base-height-px: 820px;
+  --assistant-safe-offset-x: 64;
+  --assistant-safe-offset-y: 48;
+  --assistant-fit-scale-width: calc((var(--desktop-viewport-width, 1440) - var(--assistant-safe-offset-x)) / var(--assistant-base-width));
+  --assistant-fit-scale-height: calc((var(--desktop-viewport-height, 900) - var(--assistant-safe-offset-y)) / var(--assistant-base-height));
+  --assistant-scale: min(1, var(--assistant-fit-scale-width), var(--assistant-fit-scale-height));
+  width: calc(var(--assistant-base-width-px) * var(--assistant-scale));
+  height: calc(var(--assistant-base-height-px) * var(--assistant-scale));
   display: block;
   background: transparent;
   box-shadow: none;
   border: 0;
+  border-radius: 30px;
   backdrop-filter: none;
   -webkit-backdrop-filter: none;
   overflow: hidden;
+  isolation: isolate;
 }
 
 .assistant-modal-stage {
-  width: var(--assistant-base-width);
-  height: var(--assistant-base-height);
+  position: relative;
+  width: var(--assistant-base-width-px);
+  height: var(--assistant-base-height-px);
   display: grid;
   grid-template-rows: auto minmax(0, 1fr);
   transform: scale(var(--assistant-scale));
   transform-origin: top left;
   border-radius: 30px;
   background:
-    radial-gradient(circle at top right, rgba(16, 185, 129, 0.10), transparent 24%),
-    radial-gradient(circle at top left, rgba(59, 130, 246, 0.08), transparent 22%),
-    linear-gradient(180deg, rgba(255, 255, 255, 0.74) 0%, rgba(246, 250, 252, 0.66) 100%);
+    radial-gradient(circle at top right, rgba(16, 185, 129, 0.14), transparent 26%),
+    radial-gradient(circle at top left, rgba(59, 130, 246, 0.10), transparent 24%),
+    linear-gradient(180deg, rgba(241, 246, 245, 0.92) 0%, rgba(230, 237, 235, 0.88) 100%);
   box-shadow:
-    0 24px 64px rgba(15, 23, 42, 0.14),
-    0 6px 20px rgba(15, 23, 42, 0.05);
-  border: 1px solid rgba(255, 255, 255, 0.6);
-  backdrop-filter: blur(24px);
-  -webkit-backdrop-filter: blur(24px);
+    0 28px 72px rgba(15, 23, 42, 0.22),
+    0 10px 28px rgba(15, 23, 42, 0.09),
+    inset 0 1px 0 rgba(255, 255, 255, 0.42);
+  border: 1px solid rgba(255, 255, 255, 0.44);
+  background-clip: padding-box;
   overflow: hidden;
+  isolation: isolate;
 }
 
 .assistant-header {
@@ -52,8 +64,8 @@
   justify-content: space-between;
   gap: 16px;
   padding: 22px 26px 18px;
-  border-bottom: 1px solid rgba(226, 232, 240, 0.72);
-  background: rgba(255, 255, 255, 0.46);
+  border-bottom: 1px solid rgba(203, 213, 225, 0.78);
+  background: linear-gradient(180deg, rgba(247, 250, 249, 0.82) 0%, rgba(240, 246, 244, 0.7) 100%);
 }
 
 .assistant-header-main {
@@ -128,12 +140,12 @@
   height: 38px;
   display: grid;
   place-items: center;
-  border: 1px solid #d7e0ea;
+  border: 1px solid rgba(193, 204, 216, 0.92);
   border-radius: 14px;
-  background: rgba(255, 255, 255, 0.96);
+  background: rgba(248, 251, 251, 0.94);
   color: #475569;
   font-size: 16px;
-  box-shadow: 0 6px 14px rgba(148, 163, 184, 0.1);
+  box-shadow: 0 8px 18px rgba(148, 163, 184, 0.18);
 }
 
 .assistant-layout {
@@ -152,14 +164,14 @@
 .insight-panel {
   min-width: 0;
   min-height: 0;
-  border: 1px solid rgba(231, 238, 246, 0.92);
+  border: 1px solid rgba(189, 201, 214, 0.74);
   border-radius: 24px;
-  background: rgba(255, 255, 255, 0.72);
+  background: rgba(248, 251, 251, 0.84);
   box-shadow:
-    0 12px 30px rgba(226, 232, 240, 0.26),
-    0 1px 4px rgba(15, 23, 42, 0.03);
-  backdrop-filter: blur(18px);
-  -webkit-backdrop-filter: blur(18px);
+    0 14px 32px rgba(148, 163, 184, 0.16),
+    0 2px 6px rgba(15, 23, 42, 0.05);
+  backdrop-filter: blur(22px);
+  -webkit-backdrop-filter: blur(22px);
 }
 
 .dialog-panel {
@@ -167,8 +179,8 @@
   grid-template-rows: auto minmax(0, 1fr) auto;
   overflow: hidden;
   background:
-    radial-gradient(circle at top right, rgba(59, 130, 246, 0.05), transparent 20%),
-    linear-gradient(180deg, rgba(255, 255, 255, 0.78) 0%, rgba(251, 253, 255, 0.72) 100%);
+    radial-gradient(circle at top right, rgba(59, 130, 246, 0.07), transparent 22%),
+    linear-gradient(180deg, rgba(252, 253, 253, 0.88) 0%, rgba(243, 247, 248, 0.84) 100%);
 }
 
 .dialog-toolbar {
@@ -253,12 +265,12 @@
 .message-bubble {
   max-width: min(100%, 720px);
   padding: 14px 16px;
-  border: 1px solid rgba(225, 232, 240, 0.96);
+  border: 1px solid rgba(210, 220, 230, 0.94);
   border-radius: 20px;
-  background: rgba(255, 255, 255, 0.96);
+  background: rgba(253, 254, 254, 0.94);
   color: #24324a;
   line-height: 1.65;
-  box-shadow: 0 8px 18px rgba(241, 245, 249, 0.72);
+  box-shadow: 0 10px 22px rgba(226, 232, 240, 0.48);
 }
 
 .message-meta {
@@ -556,7 +568,7 @@
   grid-template-rows: auto minmax(0, 1fr);
   overflow: hidden;
   background:
-    linear-gradient(180deg, rgba(255, 255, 255, 0.8) 0%, rgba(251, 254, 252, 0.74) 100%);
+    linear-gradient(180deg, rgba(239, 245, 243, 0.9) 0%, rgba(231, 238, 236, 0.84) 100%);
 }
 
 .insight-panel::before {
@@ -580,7 +592,7 @@
   justify-content: space-between;
   gap: 14px;
   padding: 18px 18px 14px;
-  border-bottom: 1px solid rgba(238, 242, 247, 0.88);
+  border-bottom: 1px solid rgba(205, 215, 224, 0.82);
   position: relative;
   z-index: 1;
 }
@@ -670,9 +682,9 @@
   min-width: 92px;
   padding: 10px 12px;
   border-radius: 14px;
-  background: rgba(255, 255, 255, 0.9);
-  border: 1px solid rgba(226, 232, 240, 0.9);
-  box-shadow: 0 6px 14px rgba(241, 245, 249, 0.72);
+  background: rgba(250, 252, 252, 0.9);
+  border: 1px solid rgba(202, 213, 223, 0.9);
+  box-shadow: 0 8px 18px rgba(203, 213, 225, 0.3);
   text-align: right;
 }
 
@@ -707,14 +719,14 @@
   gap: 10px;
   padding: 14px;
   border-radius: 18px;
-  border: 1px solid rgba(226, 232, 240, 0.94);
-  background: rgba(255, 255, 255, 0.76);
-  box-shadow: 0 3px 10px rgba(241, 245, 249, 0.46);
+  border: 1px solid rgba(197, 209, 221, 0.88);
+  background: rgba(249, 251, 251, 0.88);
+  box-shadow: 0 10px 20px rgba(226, 232, 240, 0.3);
 }
 
 .review-side-overview-card {
   gap: 12px;
-  background: linear-gradient(180deg, rgba(255, 255, 255, 0.84) 0%, rgba(249, 252, 255, 0.78) 100%);
+  background: linear-gradient(180deg, rgba(251, 252, 252, 0.92) 0%, rgba(240, 246, 244, 0.86) 100%);
 }
 
 .review-side-intent-row {
@@ -754,8 +766,8 @@
   align-items: center;
   padding: 12px;
   border-radius: 14px;
-  border: 1px solid rgba(226, 232, 240, 0.92);
-  background: rgba(255, 255, 255, 0.68);
+  border: 1px solid rgba(206, 216, 226, 0.88);
+  background: rgba(251, 252, 252, 0.82);
   position: relative;
   cursor: pointer;
   transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
@@ -2241,41 +2253,7 @@
   transform: translateX(18px);
 }
 
-@media (min-width: 1920px) and (min-height: 980px) {
-  .assistant-modal {
-    --assistant-visual-scale: 1.05;
-  }
-}
-
-@media (min-width: 2560px) and (min-height: 1280px) {
-  .assistant-modal {
-    --assistant-visual-scale: 1.12;
-  }
-}
-
-@media (max-width: 1680px), (max-height: 980px) {
-  .assistant-modal {
-    --assistant-visual-scale: 0.94;
-  }
-}
-
-@media (max-width: 1536px), (max-height: 920px) {
-  .assistant-modal {
-    --assistant-visual-scale: 0.88;
-  }
-}
-
-@media (max-width: 1440px), (max-height: 860px) {
-  .assistant-modal {
-    --assistant-visual-scale: 0.82;
-  }
-}
-
 @media (max-width: 1366px), (max-height: 780px) {
-  .assistant-modal {
-    --assistant-visual-scale: 0.76;
-  }
-
   .assistant-layout.has-insight {
     grid-template-columns: minmax(0, 1.34fr) 348px;
   }
@@ -2286,10 +2264,6 @@
 }
 
 @media (max-width: 1280px) {
-  .assistant-modal {
-    --assistant-visual-scale: 0.86;
-  }
-
   .assistant-layout {
     grid-template-columns: 1fr;
   }
@@ -2301,7 +2275,6 @@
 
 @media (max-width: 760px) {
   .assistant-modal {
-    --assistant-visual-scale: 1;
     width: 100vw;
     height: 100vh;
   }