feat：PC 端搜索框样式

app/globals.css

@@ -101,6 +101,7 @@ body {
   display: flex;
   align-items: center;
   justify-content: space-between;
+  gap: 16px;
 }
 
 .brand {
@@ -108,6 +109,92 @@ body {
   align-items: center;
   gap: 8px;
   font-weight: 600;
+  flex: 1 1 auto;
+  min-width: 0;
+  transition: flex 0.4s cubic-bezier(0.16, 1, 0.3, 1);
+}
+
+.brand.search-focused-sibling {
+  flex: 0 0 auto;
+}
+
+.navbar-add-fund {
+  flex: 0 1 auto;
+  width: 100%;
+  min-width: 260px;
+  max-width: 280px;
+  padding: 0;
+  background: transparent;
+  border: none;
+  box-shadow: none;
+  backdrop-filter: none;
+  transition: max-width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
+}
+
+.navbar-add-fund.search-focused {
+  max-width: 800px;
+  flex: 1;
+}
+
+.navbar-add-fund .form {
+  width: 100%;
+}
+
+.navbar-add-fund .search-input-wrapper {
+  position: relative;
+  flex: 1;
+}
+
+.navbar-add-fund .input {
+  width: 100%;
+  border-radius: 999px;
+  background: rgba(11, 18, 32, 0.9);
+}
+
+.navbar-search-icon {
+  position: absolute;
+  left: 14px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--muted);
+  pointer-events: none;
+  z-index: 2;
+}
+
+.navbar-input-shell {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding-left: 40px;
+  padding-right: 12px;
+  padding-top: 6px !important;
+  padding-bottom: 6px !important;
+  min-height: 44px;
+  flex-wrap: wrap;
+  position: relative;
+  z-index: 1;
+  height: auto;
+}
+
+.navbar-input-field {
+  flex: 1;
+  min-width: 120px;
+  height: 24px;
+  border: none;
+  outline: none;
+  background: transparent;
+  color: var(--text);
+  font-size: 14px;
+  margin-left: 20px;
+}
+
+.navbar-input-field::placeholder {
+  color: var(--muted);
+}
+
+.navbar-add-fund .button {
+  display: none;
 }
 
 .content {
@@ -116,7 +203,7 @@ body {
 
 @media (max-width: 640px) {
   .content {
-    padding-top: 90px;
+    padding-top: 140px;
   }
 
   .navbar {
@@ -127,10 +214,20 @@ body {
     border-top: none;
     border-left: none;
     border-right: none;
+    flex-wrap: wrap;
+    gap: 12px;
   }
 
-  .add-fund-section {
-    margin-top: 60px;
+  .navbar-add-fund {
+    order: 3;
+    width: 100%;
+    min-width: 0;
+    max-width: none;
+    margin-top: 8px;
+  }
+
+  .navbar-add-fund .button {
+    display: inline-flex;
   }
 }
 
@@ -142,7 +239,8 @@ body {
 
 .input {
   flex: 1;
-  height: 44px;
+  min-height: 44px;
+  height: auto;
   padding: 0 14px;
   border-radius: 12px;
   border: 1px solid var(--border);
@@ -394,6 +492,14 @@ input[type="number"] {
   display: inline-flex;
   align-items: center;
   gap: 8px;
+  flex: 1 1 auto;
+  justify-content: flex-end;
+  min-width: 0;
+  transition: flex 0.4s cubic-bezier(0.16, 1, 0.3, 1);
+}
+
+.actions.search-focused-sibling {
+  flex: 0 0 auto;
 }
 
 .icon-button {
@@ -659,6 +765,14 @@ input[type="number"] {
 
 .filter-bar {
   transition: all 0.3s ease;
+  position: sticky;
+  top: 90px;
+  z-index: 40;
+  background: rgba(15, 23, 42, 0.85);
+  backdrop-filter: blur(12px);
+  padding: 8px 12px;
+  border-radius: 12px;
+  border: 1px solid rgba(255, 255, 255, 0.05);
 }
 
 @media (max-width: 640px) {
@@ -972,6 +1086,7 @@ input[type="number"] {
   display: flex;
   flex-wrap: wrap;
   gap: 8px;
+  margin-left: 24px;
 }
 
 .fund-chip {