系统风格以及部分页面样式变更

frontend/src/layout/index.vue

@@ -1,5 +1,13 @@
 <template>
-  <div :class="classObj" class="app-wrapper" :style="{'--current-color': '#00875A', '--current-color-light': '#00875A1a', '--current-color-dark-bg': '#00875A33'}">
+  <div
+    :class="classObj"
+    class="app-wrapper"
+    :style="{
+      '--current-color': '#0B6B55',
+      '--current-color-light': '#0B6B551a',
+      '--current-color-dark-bg': '#0B6B5533'
+    }"
+  >
     <div v-if="device==='mobile'&&sidebar.opened" class="drawer-bg" @click="handleClickOutside"/>
 
     <!-- 顶部全宽 Header -->
@@ -103,9 +111,9 @@ export default {
     height: 60px;
     display: flex;
     align-items: center;
-    background: var(--edu-green-primary);
-    background: linear-gradient(90deg, var(--edu-green-primary) 0%, var(--edu-green-dark) 100%);
-    box-shadow: 0 2px 8px rgba(0, 21, 41, 0.16);
+    background: linear-gradient(104deg, #0b6b55 0%, #095b49 58%, #084c3f 100%);
+    border-bottom: 1px solid rgba(198, 155, 60, 0.5);
+    box-shadow: 0 3px 12px rgba(8, 51, 42, 0.16);
     padding: 0 20px;
     z-index: 10;
 
@@ -140,7 +148,7 @@ export default {
         letter-spacing: 1.5px;
         text-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
         cursor: pointer;
-        border-radius: 6px;
+        border-radius: 5px;
         padding: 4px 10px;
         transition: background 0.25s ease;
 
@@ -184,7 +192,7 @@ export default {
     position: relative;
     overflow: hidden;
     height: 100%;
-    background-color: #f5f7fa;
+    background-color: var(--edu-color-canvas);
   }
 
   .drawer-bg {