style(welcome): 优化欢迎页布局和样式

- 移除标题和底部按钮，简化页面结构
- 删除中心装饰圆圈，保持页面简洁
- 去掉图标背景装饰，放大图标尺寸至6rem
- 调整布局位置为不对称排列，打破完美对称
- 整体下移布局至页面中下部
- 修复文字倾斜问题，保持水平显示
- 优化文字与图标的间距

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

 <template>
   <div class="welcome-content">
-    <!-- 顶部欢迎文案 -->
-    <div class="welcome-header">
-      <h1 class="welcome-title">欢迎来到美乐爱觉</h1>
-      <p class="welcome-subtitle">开启您的学习之旅</p>
-    </div>
-
     <!-- 功能入口区域 - 轨道布局 -->
     <div class="entry-orbit">
-      <div class="orbit-center">
-        <!-- 中心装饰元素（可选） -->
-        <div class="orbit-decoration"></div>
-      </div>
-
       <!-- 3个功能入口 - 轨道布局 -->
       <div class="orbit-entries">
         <WelcomeEntryItem
@@ -25,19 +14,6 @@
         />
       </div>
     </div>
-
-    <!-- 底部开始按钮 -->
-    <div class="welcome-actions">
-      <van-button
-        type="primary"
-        size="large"
-        round
-        block
-        @click="handleStart"
-      >
-        开始体验
-      </van-button>
-    </div>
   </div>
 </template>
 
@@ -62,11 +38,6 @@ const handleEntryClick = (entry) => {
     router.push(entry.route)
   }
 }
-
-const handleStart = () => {
-  // 跳转到首页
-  router.push('/')
-}
 </script>
 
 <style lang="less" scoped>
@@ -77,59 +48,17 @@ const handleStart = () => {
   display: flex;
   flex-direction: column;
   align-items: center;
-  justify-content: space-between;
-  padding: 6rem 2rem 3rem;
+  justify-content: flex-end;
+  padding: 2rem;
+  padding-bottom: 8rem;
   z-index: 1;
 }
 
-.welcome-header {
-  text-align: center;
-  margin-top: 4rem;
-
-  .welcome-title {
-    font-size: 2rem;
-    font-weight: bold;
-    color: #ffffff;
-    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
-    margin-bottom: 0.75rem;
-    animation: fadeInDown 1s ease;
-  }
-
-  .welcome-subtitle {
-    font-size: 1rem;
-    color: rgba(255, 255, 255, 0.9);
-    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
-    animation: fadeInDown 1s ease 0.2s both;
-  }
-}
-
 .entry-orbit {
   position: relative;
   width: 100%;
   max-width: 20rem;
   aspect-ratio: 1;
-  margin: 2rem 0;
-
-  .orbit-center {
-    position: absolute;
-    top: 50%;
-    left: 50%;
-    transform: translate(-50%, -50%);
-    width: 8rem;
-    height: 8rem;
-    border-radius: 50%;
-    background: radial-gradient(circle, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
-    backdrop-filter: blur(10px);
-    animation: pulse 3s ease-in-out infinite;
-
-    .orbit-decoration {
-      width: 100%;
-      height: 100%;
-      border-radius: 50%;
-      border: 1px solid rgba(255, 255, 255, 0.1);
-      animation: rotate 20s linear infinite;
-    }
-  }
 
   .orbit-entries {
     position: relative;
@@ -144,79 +73,30 @@ const handleStart = () => {
       animation: float 3s ease-in-out infinite;
 
       &.orbit-entry-1 {
-        // 课程中心 - 顶部
-        top: 0;
-        left: 50%;
+        // 课程中心 - 顶部偏左
+        top: 5%;
+        left: 40%;
         animation-delay: 0s;
       }
 
       &.orbit-entry-2 {
         // 活动中心 - 右下
         top: 75%;
-        left: 85%;
+        left: 80%;
         animation-delay: 0.5s;
       }
 
       &.orbit-entry-3 {
         // 个人中心 - 左下
-        top: 75%;
-        left: 15%;
+        top: 70%;
+        left: 20%;
         animation-delay: 1s;
       }
     }
   }
 }
 
-.welcome-actions {
-  width: 100%;
-  max-width: 20rem;
-  margin-bottom: 2rem;
-  animation: fadeInUp 1s ease 0.4s both;
-
-  :deep(.van-button) {
-    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-    border: none;
-    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
-    height: 3rem;
-    font-size: 1.1rem;
-    font-weight: 500;
-  }
-}
-
 // 动画定义
-@keyframes fadeInDown {
-  from {
-    opacity: 0;
-    transform: translateY(-20px);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0);
-  }
-}
-
-@keyframes fadeInUp {
-  from {
-    opacity: 0;
-    transform: translateY(20px);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0);
-  }
-}
-
-@keyframes pulse {
-  0%, 100% {
-    opacity: 0.5;
-    transform: translate(-50%, -50%) scale(1);
-  }
-  50% {
-    opacity: 0.8;
-    transform: translate(-50%, -50%) scale(1.05);
-  }
-}
-
 @keyframes float {
   0%, 100% {
     transform: translate(-50%, -50%) translateY(0);
@@ -225,13 +105,4 @@ const handleStart = () => {
     transform: translate(-50%, -50%) translateY(-10px);
   }
 }
-
-@keyframes rotate {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
-}
 </style>

+<!--
+ * @Date: 2026-01-28 16:57:21
+ * @LastEditors: hookehuyr hookehuyr@gmail.com
+ * @LastEditTime: 2026-01-28 16:57:41
+ * @FilePath: /mlaj/src/components/welcome/WelcomeEntryItem.vue
+ * @Description: 欢迎页入口项组件
+-->
 <template>
   <div
     class="entry-item"
@@ -57,19 +64,14 @@ const handleClick = () => {
     width: 6rem;
     height: 6rem;
     border-radius: 50%;
-    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.05));
-    backdrop-filter: blur(10px);
     display: flex;
     align-items: center;
     justify-content: center;
-    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
-    margin-bottom: 0.75rem;
 
     .entry-icon {
-      width: 3rem;
-      height: 3rem;
+      width: 6rem;
+      height: 6rem;
       object-fit: contain;
-      filter: brightness(0) invert(1); // 图标反白显示
     }
   }