完成大量美化

frontend/src/components/TopBar/TopBar.css

@@ -144,11 +144,15 @@
   right: 0;
   bottom: 0;
   background-color: rgba(0, 0, 0, 0.5);
+  /* Optimize backdrop filter for better performance */
   backdrop-filter: blur(4px);
+  -webkit-backdrop-filter: blur(4px);
   z-index: var(--z-modal-backdrop);
   display: flex;
   justify-content: center;
   padding-top: var(--spacing-xl);
+  /* Optimize animation for better performance */
+  will-change: opacity;
   animation: fadeIn var(--transition-normal);
 }
 
@@ -172,6 +176,8 @@
   overflow: hidden;
   display: flex;
   flex-direction: column;
+  /* Optimize animation for better performance */
+  will-change: transform, opacity;
   animation: slideDown var(--transition-smooth);
 }
 
@@ -220,20 +226,20 @@
   display: inline-flex;
   align-items: center;
   padding: 6px 14px;
-  background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
-  border: 1px solid rgba(102, 126, 234, 0.2);
+  background: var(--gradient-subtle);
+  border: 1px solid var(--color-border);
   border-radius: 16px;
   font-size: 13px;
-  color: #495057;
+  color: var(--color-text-primary);
   font-weight: 500;
   transition: all 0.15s ease;
 }
 
 .global-book-item-topbar:hover {
-  background: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.12) 100%);
-  border-color: rgba(102, 126, 234, 0.3);
+  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent-light) 100%);
+  border-color: var(--color-accent);
   transform: translateY(-1px);
-  box-shadow: 0 2px 6px rgba(102, 126, 234, 0.15);
+  box-shadow: 0 2px 6px var(--color-accent-light);
 }
 
 .global-book-name-topbar {
@@ -250,6 +256,73 @@
   padding: 20px;
 }
 
+/* ==================== 设置面板样式 ==================== */
+
+.setting-section {
+  margin-bottom: var(--spacing-xl);
+}
+
+.setting-section:last-child {
+  margin-bottom: 0;
+}
+
+.setting-section h4 {
+  margin: 0 0 var(--spacing-md) 0;
+  font-size: 0.95rem;
+  font-weight: 600;
+  color: var(--color-text-primary);
+  font-family: var(--font-ui);
+}
+
+.setting-options {
+  display: flex;
+  gap: var(--spacing-sm);
+  margin-bottom: var(--spacing-sm);
+}
+
+.setting-option {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: var(--spacing-sm) var(--spacing-md);
+  background-color: var(--color-bg-secondary);
+  border: 2px solid var(--color-border);
+  border-radius: var(--radius-md);
+  cursor: pointer;
+  transition: all var(--transition-fast);
+  font-size: 0.9rem;
+  color: var(--color-text-secondary);
+  position: relative;
+}
+
+.setting-option input {
+  position: absolute;
+  opacity: 0;
+  width: 0;
+  height: 0;
+}
+
+.setting-option:hover {
+  border-color: var(--color-accent);
+  background-color: var(--color-bg-tertiary);
+  color: var(--color-text-primary);
+}
+
+.setting-option.active {
+  border-color: var(--color-accent);
+  background-color: var(--color-accent-light);
+  color: var(--color-accent);
+  font-weight: 600;
+}
+
+.setting-description {
+  margin: var(--spacing-xs) 0 0 0;
+  font-size: 0.8rem;
+  color: var(--color-text-muted);
+  line-height: 1.5;
+}
+
 /* 主内容区域 */
 .main-container {
   margin-top: 50px;