diff --git a/firmware/cyd/VERSION.txt b/firmware/cyd/VERSION.txt
index b90d15f..e8ee411 100644
--- a/firmware/cyd/VERSION.txt
+++ b/firmware/cyd/VERSION.txt
@@ -1,5 +1,5 @@
 name: CYD Whistle Sound Sensor (cyd)
-git: b2052a7
+git: b04464d
 date: 2026-10-23
 board: ESP32-2432S028R (ILI9341)
 features: SoftSPI touch, LVGL, whistle/sound digital H/L on GPIO22
@@ -12,5 +12,5 @@ offsets:
 sha256:
   bootloader.bin  3D234A7471F67B013686DABD4DEE7C1FA915C9928463616A94BC9297ACF1ABF8
   boot_app0.bin   F94C5D786A7A8FAB06AC5D10E33BF37711A6697636DC037559EA19CC410A17F0
-  firmware.bin    5CCE5B8CF5A31950C109E477A563FD31B1848ABE26C98D5AE70AC60450288634
+  firmware.bin    A1BCCD76CC251EF7541DCD92E949B47C487D321E99F77BD4B80EC2867541B01C
   partitions.bin  148B959CBFF1C38AA8E1D5C0BA9D612C54997B945E56A63F41223EEF650653A1
diff --git a/firmware/cyd/firmware.bin b/firmware/cyd/firmware.bin
index 8dd5177..549bf1d 100644
Binary files a/firmware/cyd/firmware.bin and b/firmware/cyd/firmware.bin differ
diff --git a/src/ui.cpp b/src/ui.cpp
index 0280587..47d7b78 100644
--- a/src/ui.cpp
+++ b/src/ui.cpp
@@ -18,7 +18,6 @@ static lv_obj_t *lbl_pin;
 static lv_obj_t *lbl_state;
 static lv_obj_t *lbl_level;
 static lv_obj_t *lbl_count;
-static lv_obj_t *lbl_hint;
 static lv_obj_t *btn_reset;
 static lv_obj_t *bar_pulse;
 
@@ -44,34 +43,37 @@ void ui_create() {
   lv_obj_t *scr = lv_screen_active();
   lv_obj_set_style_bg_color(scr, lv_color_hex(COL_BG), 0);
   lv_obj_set_style_bg_opa(scr, LV_OPA_COVER, 0);
+  /* 320x240：自上而下分区，互不重叠
+   *  title 8 | pin 42 | state 70 | level 108 | bar 136 | count 162 | reset 192
+   */
 
   lbl_title = lv_label_create(scr);
   lv_label_set_text(lbl_title, "Whistle / Sound");
   lv_obj_set_style_text_color(lbl_title, lv_color_hex(COL_INK), 0);
-  lv_obj_set_style_text_font(lbl_title, &lv_font_montserrat_28, 0);
-  lv_obj_align(lbl_title, LV_ALIGN_TOP_MID, 0, 12);
+  lv_obj_set_style_text_font(lbl_title, &lv_font_montserrat_20, 0);
+  lv_obj_align(lbl_title, LV_ALIGN_TOP_MID, 0, 8);
 
   lbl_pin = lv_label_create(scr);
   lv_label_set_text_fmt(lbl_pin, "OUT -> GPIO%d  (H/L)", SOUND_PIN);
   lv_obj_set_style_text_color(lbl_pin, lv_color_hex(COL_MUTED), 0);
   lv_obj_set_style_text_font(lbl_pin, &lv_font_montserrat_14, 0);
-  lv_obj_align(lbl_pin, LV_ALIGN_TOP_MID, 0, 48);
+  lv_obj_align(lbl_pin, LV_ALIGN_TOP_MID, 0, 36);
 
   lbl_state = lv_label_create(scr);
   lv_label_set_text(lbl_state, "QUIET");
   lv_obj_set_style_text_color(lbl_state, lv_color_hex(COL_MUTED), 0);
   lv_obj_set_style_text_font(lbl_state, &lv_font_montserrat_28, 0);
-  lv_obj_align(lbl_state, LV_ALIGN_TOP_MID, 0, 78);
+  lv_obj_align(lbl_state, LV_ALIGN_TOP_MID, 0, 62);
 
   lbl_level = lv_label_create(scr);
   lv_label_set_text(lbl_level, "pin: LOW");
   lv_obj_set_style_text_color(lbl_level, lv_color_hex(COL_MUTED), 0);
   lv_obj_set_style_text_font(lbl_level, &lv_font_montserrat_16, 0);
-  lv_obj_align(lbl_level, LV_ALIGN_TOP_MID, 0, 114);
+  lv_obj_align(lbl_level, LV_ALIGN_TOP_MID, 0, 100);
 
   bar_pulse = lv_bar_create(scr);
-  lv_obj_set_size(bar_pulse, UI_HOR_RES - 48, 18);
-  lv_obj_align(bar_pulse, LV_ALIGN_TOP_MID, 0, 144);
+  lv_obj_set_size(bar_pulse, UI_HOR_RES - 48, 16);
+  lv_obj_align(bar_pulse, LV_ALIGN_TOP_MID, 0, 128);
   lv_bar_set_range(bar_pulse, 0, 100);
   lv_bar_set_value(bar_pulse, 0, LV_ANIM_OFF);
   lv_obj_set_style_bg_color(bar_pulse, lv_color_hex(COL_QUIET), 0);
@@ -86,17 +88,11 @@ void ui_create() {
   lv_label_set_text(lbl_count, "hits: 0");
   lv_obj_set_style_text_color(lbl_count, lv_color_hex(COL_INK), 0);
   lv_obj_set_style_text_font(lbl_count, &lv_font_montserrat_20, 0);
-  lv_obj_align(lbl_count, LV_ALIGN_TOP_MID, 0, 174);
-
-  lbl_hint = lv_label_create(scr);
-  lv_label_set_text(lbl_hint, "dB N/A (digital only)");
-  lv_obj_set_style_text_color(lbl_hint, lv_color_hex(COL_MUTED), 0);
-  lv_obj_set_style_text_font(lbl_hint, &lv_font_montserrat_14, 0);
-  lv_obj_align(lbl_hint, LV_ALIGN_TOP_MID, 0, 204);
+  lv_obj_align(lbl_count, LV_ALIGN_TOP_MID, 0, 154);
 
   btn_reset = lv_button_create(scr);
-  lv_obj_set_size(btn_reset, 120, 40);
-  lv_obj_align(btn_reset, LV_ALIGN_BOTTOM_MID, 0, -12);
+  lv_obj_set_size(btn_reset, 140, 44);
+  lv_obj_align(btn_reset, LV_ALIGN_TOP_MID, 0, 188);
   style_btn(btn_reset, COL_BTN);
   lv_obj_add_event_cb(btn_reset, on_reset, LV_EVENT_CLICKED, nullptr);
   lv_obj_t *lbl = lv_label_create(btn_reset);