diff --git a/src/App.vue b/src/App.vue
index 95ed9d7..3dd379b 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -54,7 +54,7 @@
 
         <!-- 卡片展示区 -->
         <div v-if="report.hardware" class="dashboard fade-in">
-          <!-- 1. 硬件概览 -->
+          <!-- 1. 硬件概览 (强制独占一行) -->
           <div class="card summary slide-up">
             <div class="card-header">
               <h3>🖥️ 硬件概览与资源占用</h3>
@@ -85,7 +85,7 @@
             </div>
           </div>
 
-          <!-- 2. 驱动状态 (修复了标签样式) -->
+          <!-- 2. 驱动状态 -->
           <div v-if="report.drivers" class="card slide-up" :class="{ danger: report.drivers.length > 0, success: report.drivers.length === 0 }">
             <div class="card-header">
               <h3>🔌 驱动状态</h3>
@@ -302,8 +302,18 @@ function triggerToast(title, message, type = 'success') { toast.title = title; t
 onUnmounted(() => { for (const fn of unlistenFns) fn(); if (toastTimer) clearTimeout(toastTimer); });
 </script>
 
+<!-- [修复 2] 全局滚动条样式优化 -->
+<style>
+body {
+  margin: 0; 
+  padding: 0; 
+  background-color: #f4f6f9; 
+  /* 改为 hidden，因为使用了内部 flex 滚动区域 (.main-content) */
+  overflow: hidden; 
+}
+</style>
+
 <style scoped>
-/* ... 布局样式保持不变 ... */
 .app-layout { display: flex; height: 100vh; width: 100vw; overflow: hidden; background-color: #f4f6f9; }
 .sidebar { width: 240px; background: #2c3e50; color: white; display: flex; flex-direction: column; padding: 20px 0; box-shadow: 2px 0 10px rgba(0,0,0,0.1); z-index: 10; }
 .brand { padding: 0 20px 30px; display: flex; align-items: center; gap: 12px; }
@@ -323,90 +333,19 @@ onUnmounted(() => { for (const fn of unlistenFns) fn(); if (toastTimer) clearTim
 
 .dashboard { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 20px; }
 .card { background: white; border-radius: 10px; padding: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.03); border: 1px solid #eaecf0; border-top: 3px solid #2ecc71; }
-/* 修复: 头部 flex 对齐 */
 .card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 1px solid #f0f2f5; }
-/* 修复: 使用 h3 匹配样式 */
 .card-header h3 { margin: 0; font-size: 1.1rem; font-weight: 600; }
 
-/* item-header 增加 gap */
-.item-header { 
-  display: flex; 
-  justify-content: space-between; 
-  align-items: center; 
-  margin-bottom: 4px; 
-  gap: 12px; 
-}
+.item-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; gap: 12px; }
+.progress-label { display: flex; justify-content: space-between; font-size: 0.85rem; color: #636e72; gap: 10px; }
+.text-ellipsis { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
+.item-header strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; flex: 1; }
+.status-text, .code-tag, .badge { flex-shrink: 0; white-space: nowrap; }
+.event-id { font-weight: bold; color: #2c3e50; background: #e2e8f0; padding: 1px 5px; border-radius: 3px; font-size: 0.75rem; flex-shrink: 0; }
+.event-source { font-size: 0.75rem; color: #7f8c8d; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin: 0 5px; text-align: left; }
+.event-time { font-size: 0.75rem; color: #95a5a6; flex-shrink: 0; white-space: nowrap; }
+.badge { font-size: 0.75rem; padding: 3px 10px; border-radius: 12px; color: white; font-weight: 600; letter-spacing: 0.5px; white-space: nowrap; flex-shrink: 0; }
 
-/* 进度条标签 增加 gap */
-.progress-label { 
-  display: flex; 
-  justify-content: space-between; 
-  font-size: 0.85rem; 
-  color: #636e72; 
-  gap: 10px; 
-}
-
-.text-ellipsis { 
-  white-space: nowrap; 
-  overflow: hidden; 
-  text-overflow: ellipsis; 
-  min-width: 0; 
-}
-
-.item-header strong {
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  min-width: 0;
-  flex: 1; 
-}
-
-.status-text, .code-tag, .badge {
-  flex-shrink: 0; 
-  white-space: nowrap;
-}
-
-.event-id { 
-  font-weight: bold; 
-  color: #2c3e50; 
-  background: #e2e8f0; 
-  padding: 1px 5px; 
-  border-radius: 3px; 
-  font-size: 0.75rem; 
-  flex-shrink: 0;
-}
-
-.event-source {
-  font-size: 0.75rem;
-  color: #7f8c8d;
-  flex: 1; 
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  margin: 0 5px; 
-  text-align: left;
-}
-
-.event-time { 
-  font-size: 0.75rem; 
-  color: #95a5a6; 
-  flex-shrink: 0;
-  white-space: nowrap;
-}
-
-/* Badge 样式增强 */
-.badge { 
-  font-size: 0.75rem; 
-  padding: 3px 10px; 
-  border-radius: 12px; 
-  color: white; 
-  font-weight: 600; 
-  letter-spacing: 0.5px; 
-  white-space: nowrap; 
-  flex-shrink: 0; 
-}
-
-/* ... 剩余样式 ... */
 .grid-container-summary { display: grid; grid-template-columns: 1fr 1.5fr; gap: 25px; }
 @media (max-width: 900px) { .grid-container-summary { grid-template-columns: 1fr; } }
 .basic-info, .usage-bars { display: flex; flex-direction: column; gap: 12px; }
@@ -433,6 +372,13 @@ onUnmounted(() => { for (const fn of unlistenFns) fn(); if (toastTimer) clearTim
 .progress-bar { width: 100%; height: 8px; background: #f1f3f5; border-radius: 4px; overflow: hidden; }
 .content-box { padding: 5px 0; } .main-text { font-weight: 500; color: #2c3e50; margin-bottom: 8px; }
 .card.danger { border-top-color: #ff4757; }
+
+/* [修复 1] 硬件概览独占一行 (Explicit Override) */
+.card.summary { 
+  border-top-color: #3498db; 
+  grid-column: 1 / -1; 
+}
+
 .primary-btn { background: #2ecc71; color: white; border: none; padding: 10px 20px; border-radius: 6px; cursor: pointer; font-weight: 600; display: flex; align-items: center; gap: 8px; transition: 0.2s; }
 .primary-btn:hover:not(:disabled) { background: #27ae60; } .primary-btn:disabled { background: #bdc3c7; cursor: not-allowed; }
 .secondary-btn { background: white; border: 1px solid #dcdfe6; color: #606266; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-size: 0.9rem; }