diff --git a/SiFli-SDK b/SiFli-SDK
index a78a5c3..81f96e1 160000
--- a/SiFli-SDK
+++ b/SiFli-SDK
@@ -1 +1 @@
-Subproject commit a78a5c39be9559571369a14c6aaa7802fbe3296a
+Subproject commit 81f96e1f99c4629eebb166a05424cff548926859
diff --git a/epdiy-epub/README.md b/epdiy-epub/README.md
index e8ca766..e985f3d 100644
--- a/epdiy-epub/README.md
+++ b/epdiy-epub/README.md
@@ -277,6 +277,7 @@ uint32_t epd_wave_table_get_frames(int temperature, EpdDrawMode mode)
             return wave_table[i].frame_count;
         }
     }
+    // 默认回退到第一组
     p_current_wave_from = (const uint8_t *)(*wave_table[0].wave_table);
     return wave_table[0].frame_count;
 }
diff --git a/epdiy-epub/lib/Epub/EpubList/EpubReader.cpp b/epdiy-epub/lib/Epub/EpubList/EpubReader.cpp
index 8e00bf7..8fa08f4 100644
--- a/epdiy-epub/lib/Epub/EpubList/EpubReader.cpp
+++ b/epdiy-epub/lib/Epub/EpubList/EpubReader.cpp
@@ -411,12 +411,20 @@ void EpubReader::render_overlay()
   // 三行布局：3, 5, 4（第三行加了"设置"按钮）
   const int rows = 3;
   const int cols[rows] = {3, 5, 4};
-  const int gap_h = 20;
   const int gap_w = 10;
-  const int row_h = 80;
+
+  // 动态计算 row_h 和 gap_h，确保三行按钮自适应填满 overlay 区域
+  const int min_gap = 6;
+  int avail_for_rows = area_h - (rows + 1) * min_gap;
+  int row_h = avail_for_rows / rows;
+  if (row_h > 80) row_h = 80;   // 上限，按钮不要太大
+  if (row_h < 40) row_h = 40;   // 下限，保证可点击
+  int gap_h = (area_h - rows * row_h) / (rows + 1);
+  if (gap_h < 2) gap_h = 2;
+
   int content_h = rows * row_h + (rows + 1) * gap_h;
   int y0 = area_y + (area_h - content_h) / 2;
-  if (y0 < area_y + 4) y0 = area_y + 4;
+  if (y0 < area_y + 2) y0 = area_y + 2;
 
   int index = 0;
   auto fill_label = [&](int idx, char *label, size_t cap) {
diff --git a/epdiy-epub/lib/Epub/EpubList/EpubToc.cpp b/epdiy-epub/lib/Epub/EpubList/EpubToc.cpp
index d3eb34c..dda43cc 100644
--- a/epdiy-epub/lib/Epub/EpubList/EpubToc.cpp
+++ b/epdiy-epub/lib/Epub/EpubList/EpubToc.cpp
@@ -196,6 +196,11 @@ void EpubToc::render()
   draw_button(btn_x0, "上一页", m_bottom_mode && m_bottom_idx == 0);
   draw_button(btn_x1, "书库", m_bottom_mode && m_bottom_idx == 1);
   draw_button(btn_x2, "下一页", m_bottom_mode && m_bottom_idx == 2);
+
+  // 注册底部三按钮的触控区域（对应 g_area_array[6,7,8]）
+  static_add_area(btn_x0, btn_y, btn_w, btn_h, 6);
+  static_add_area(btn_x1, btn_y, btn_w, btn_h, 7);
+  static_add_area(btn_x2, btn_y, btn_w, btn_h, 8);
 }
 
 uint16_t EpubToc::get_selected_toc()
diff --git a/epdiy-epub/src/epub_mem.c b/epdiy-epub/src/epub_mem.c
index 5f150a4..6a1947c 100644
--- a/epdiy-epub/src/epub_mem.c
+++ b/epdiy-epub/src/epub_mem.c
@@ -84,7 +84,7 @@ rt_uint32_t heap_free_size(void)
 
 
 /*==========================================================================
- * FreeType 内存分配适配
+ * FreeType �ڴ��������
  *========================================================================*/
 #ifdef PKG_FREETYPE
 #include <string.h>
diff --git a/epdiy-epub/src/epub_screen.cpp b/epdiy-epub/src/epub_screen.cpp
index 1158651..9a31dd4 100644
--- a/epdiy-epub/src/epub_screen.cpp
+++ b/epdiy-epub/src/epub_screen.cpp
@@ -450,4 +450,4 @@ int handleSettingsPage(Renderer *renderer, UIAction action, bool needs_redraw)
       break;
   }
   return 0;
-}
\ No newline at end of file
+}
diff --git a/epdiy-epub/src/reading_settings.cpp b/epdiy-epub/src/reading_settings.cpp
index 4136d99..c6ce143 100644
--- a/epdiy-epub/src/reading_settings.cpp
+++ b/epdiy-epub/src/reading_settings.cpp
@@ -247,7 +247,17 @@ void reading_settings_draw(Renderer *renderer)
 
     int page_w = renderer->get_page_width();
     int page_h = renderer->get_page_height();
+    /*
+     * 自适应行高：取实际字体行高，但封顶保证 6 个设置项 + 标题 + 提示区都能放进页面。
+     * 布局公式：20(top) + line_h*2(title) + 10(sep) + 6*line_h*2(items) + line_h*3(hints)
+     *         = 30 + 17 * line_h  ≤  page_h
+     * => max_line_h = (page_h - 30) / 17
+     */
     int line_h = renderer->get_line_height();
+    int max_lh = (page_h - 30) / 17;
+    if (max_lh < 20) max_lh = 20;
+    if (line_h > max_lh) line_h = max_lh;
+
     int y = 20;
     int x_label = 30;
     int x_value = page_w * 2 / 5;
diff --git a/epdiy-epub/src/type.h b/epdiy-epub/src/type.h
index 8c51640..133b121 100644
--- a/epdiy-epub/src/type.h
+++ b/epdiy-epub/src/type.h
@@ -22,4 +22,4 @@ typedef enum {
   CHARGING_PAGE,       // 充电页面
   SHUTDOWN_PAGE        // 关机页面
 } AppUIState;
-#endif
\ No newline at end of file
+#endif