diff --git a/src/components/AppFooter.vue b/src/components/AppFooter.vue
index 0352797..701834f 100644
--- a/src/components/AppFooter.vue
+++ b/src/components/AppFooter.vue
@@ -176,9 +176,9 @@ const coreBusiness = [
   }
 
   &__contact {
-    font-size: 16px;
-    font-weight: 500;
-    line-height: 23px;
+    font-size: @font-size-sm;
+    font-weight: 400;
+    line-height: 1.8;
   }
 
   &__bottom {
@@ -193,14 +193,14 @@ const coreBusiness = [
 
   &__legal {
     margin: 0;
-    font-size: 14px;
-    font-weight: 500;
-    line-height: 23px;
+    font-size: @font-size-sm;
+    font-weight: 400;
+    line-height: 1.6;
     white-space: nowrap;
     color: @white;
 
     &--icp {
-      margin-top: 16px;
+      margin-top: @spacing-base;
       margin-left: 315px;
     }
   }
diff --git a/src/views/404.vue b/src/views/404.vue
index 8c0cd05..4566b3b 100644
--- a/src/views/404.vue
+++ b/src/views/404.vue
@@ -6,30 +6,79 @@ function goHome(): void {
 
 <template>
   <section class="not-found">
-    <h1>404</h1>
-    <p class="text-secondary">
-      页面不存在或已下线
-    </p>
-    <button class="not-found__back link" @click="goHome">
-      返回首页
-    </button>
+    <div class="not-found__card">
+      <p class="not-found__code">
+        404
+      </p>
+      <h1 class="not-found__title">
+        页面不存在
+      </h1>
+      <p class="not-found__desc text-secondary">
+        页面不存在或已下线，请返回首页继续浏览
+      </p>
+      <button
+        class="not-found__back"
+        type="button"
+        @click="goHome"
+      >
+        返回首页
+      </button>
+    </div>
   </section>
 </template>
 
 <style lang="less" scoped>
 .not-found {
-  .flex(column, center);
-  gap: @spacing-base;
+  .flex(column, center, center);
   min-height: 100vh;
+  padding: @spacing-lg;
+  background: @bg-color;
 
-  h1 {
-    font-size: 64px;
+  &__card {
+    .flex(column, center, center);
+    gap: @spacing-sm;
+    width: 100%;
+    max-width: 420px;
+    padding: @spacing-xxl @spacing-xl;
+    border-radius: @radius-base;
+    background: @white;
+    text-align: center;
+  }
+
+  &__code {
+    margin: 0;
+    font-size: @font-size-hero;
+    font-weight: 600;
+    line-height: 1;
+    color: @primary-color;
+  }
+
+  &__title {
+    margin: 0;
+    font-size: @font-size-xl;
+    font-weight: 600;
     color: @heading-color;
   }
 
-  &__back {
-    color: @primary-color;
+  &__desc {
+    margin: 0 0 @spacing-base;
     font-size: @font-size-base;
   }
+
+  &__back {
+    height: 40px;
+    padding: 0 @spacing-xl;
+    border: none;
+    border-radius: @radius-round;
+    background: @primary-color;
+    color: @white;
+    font-size: @font-size-base;
+    cursor: pointer;
+    transition: background 0.2s;
+
+    &:hover {
+      background: @primary-hover;
+    }
+  }
 }
 </style>
diff --git a/src/views/profile/cpns/AboutPanel.vue b/src/views/profile/cpns/AboutPanel.vue
index 68e2548..317cbed 100644
--- a/src/views/profile/cpns/AboutPanel.vue
+++ b/src/views/profile/cpns/AboutPanel.vue
@@ -71,13 +71,13 @@ const contacts = [
 
   &__section {
     & + & {
-      margin-top: 34px;
+      margin-top: @spacing-lg;
     }
   }
 
   &__section-title {
-    font-size: 14px;
-    font-weight: 700;
+    font-size: @font-size-base;
+    font-weight: 600;
     color: @heading-color;
     line-height: 20px;
     text-align: center;
diff --git a/src/views/profile/cpns/HelpFaq.vue b/src/views/profile/cpns/HelpFaq.vue
index 04f11e2..7e450eb 100644
--- a/src/views/profile/cpns/HelpFaq.vue
+++ b/src/views/profile/cpns/HelpFaq.vue
@@ -45,33 +45,37 @@ defineProps<Props>()
 
   &__group {
     & + & {
-      margin-top: 42px;
+      margin-top: @spacing-xl;
     }
   }
 
   &__group-title {
-    font-size: 14px;
-    font-weight: 700;
+    font-size: @font-size-base;
+    font-weight: 600;
     color: @heading-color;
-    line-height: 20px;
-    text-align: center;
+    line-height: 1.4;
+    text-align: left;
   }
 
   &__item {
-    margin-top: 24px;
+    margin-top: @spacing-base;
+    padding: @spacing-base;
+    border-radius: @radius-base;
+    background: @bg-color-light;
   }
 
   &__q {
-    font-size: 14px;
-    font-weight: 700;
+    font-size: @font-size-base;
+    font-weight: 600;
     color: @heading-color;
-    line-height: 20px;
+    line-height: 1.4;
   }
 
   &__a {
-    margin: 8px 0 0 184px;
-    font-size: 13px;
-    line-height: 1.8;
+    margin: @spacing-sm 0 0;
+    font-size: @font-size-sm;
+    line-height: 1.6;
+    color: @text-color-secondary;
   }
 
   &__empty {