diff --git a/pages/styles.css b/pages/styles.css
index b23938a..e3070d1 100644
--- a/pages/styles.css
+++ b/pages/styles.css
@@ -478,3 +478,97 @@ body.fullscreen #tabContentAi .llm-result-container {
   max-height: 80vh;
 }
 
+/* 全屏模式下让整体内容区域左右/上下都留白，且居中美观 */
+body.fullscreen {
+  background: #f8fbff;
+}
+
+body.fullscreen .draggable-panel {
+  position: fixed !important;
+  left: 50% !important;
+  top: 50% !important;
+  transform: translate(-50%, -50%) !important;
+  width: 96vw !important;
+  max-width: 1200px !important;
+  height: 94vh !important;
+  max-height: 98vh !important;
+  min-width: 420px !important;
+  min-height: 340px !important;
+  box-shadow: 0 10px 40px #3070ed22;
+  border-radius: 24px;
+  background: #fff;
+  /* 下面这两行：确保内部内容不贴边 */
+  padding: 30px 44px 24px 44px;
+  display: flex;
+  flex-direction: column;
+}
+
+/* 让内容整体再居中一层 */
+body.fullscreen .container {
+  flex: 1 1 0;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  height: 0;
+  /* 新增内边距，内容远离外壳边界 */
+  padding-left: 24px;
+  padding-right: 24px;
+}
+
+/* 搜索栏、Tab按钮等内容更有呼吸感 */
+.search-bar {
+  margin-bottom: 18px;
+}
+.tab-bar {
+  margin-bottom: 12px;
+}
+.tab-btn {
+  border-radius: 12px 12px 0 0;
+  margin: 0 3px;
+}
+
+#tabContentAi .llm-result-container,
+#tabContentEs {
+  margin-top: 8px;
+  margin-bottom: 8px;
+}
+
+/* 让按钮等不贴右上角 */
+.open-tab-btn {
+  margin-left: 16px !important;
+}
+.user-menu {
+  top: 18px !important;
+  right: 22px !important;
+}
+
+/* 保证消息内容整体有圆角和阴影 */
+.llm-result-container,
+#results {
+  border-radius: 10px;
+  box-shadow: 0 2px 8px #cdd2fa2c;
+  border: 1px solid #e2e9f4;
+  background: #f8fbff;
+  padding: 16px 20px;
+}
+
+/* 防止消息内容贴左边 */
+.llm-result-content {
+  padding-left: 4px;
+  padding-right: 4px;
+}
+
+body.fullscreen .container {
+  height: 100%;
+  min-height: 0;
+  flex: 1 1 0;
+  display: flex;
+  flex-direction: column;
+}
+body.fullscreen #tabContentAi.tab-content.active {
+  flex: 1 1 0;
+  min-height: 0;
+  display: flex !important;
+  flex-direction: column;
+  height: 100%;
+}