diff --git a/css/components.css b/css/components.css
index 58b9abf..78c560e 100644
--- a/css/components.css
+++ b/css/components.css
@@ -2,8 +2,10 @@
 .tool-tip-popover {
   position: fixed;
   z-index: 2147483000;
-  width: 220px;
-  max-width: min(220px, calc(100vw - 16px));
+  width: max-content;
+  min-width: 160px;
+  max-width: min(320px, calc(100vw - 18px));
+  box-sizing: border-box;
   padding: 7px 9px;
   border-radius: 10px;
   background: rgba(46, 38, 30, 0.78);
@@ -15,6 +17,9 @@
   backdrop-filter: blur(1px);
   text-shadow: 0 1px 3px rgba(25, 18, 12, 0.55);
   pointer-events: none;
+  white-space: normal;
+  overflow-wrap: anywhere;
+  word-break: break-word;
 }
 .tool-tip-popover.hidden { display: none; }
 .selected-actions {
@@ -733,16 +738,6 @@
   .tool-category[data-tool-category="operate"]:not(.collapsed) { top: 58px; }
 }
 
-/* v39.15.38: prevent long tooltips from spilling outside the viewport. */
-.tool-tip-popover {
-  width: max-content;
-  min-width: 160px;
-  max-width: min(320px, calc(100vw - 18px));
-  box-sizing: border-box;
-  white-space: normal;
-  overflow-wrap: anywhere;
-  word-break: break-word;
-}
 @media (max-width: 980px) {
   body.touch-mobile-ui .tool-tip-popover {
     max-width: min(280px, calc(100vw - 24px));
diff --git a/js/ui_bind.js b/js/ui_bind.js
index 7e8fb1c..fa3621d 100644
--- a/js/ui_bind.js
+++ b/js/ui_bind.js
@@ -5,9 +5,8 @@ function bindUI() {
   loadLogPushSettings();
   syncLogPushControls();
   syncAudioControls();
-  applyToolTips();
+  window.TarinaiTooltips?.applyToolPalette?.();
   window.bindGroundUI?.(world);
-  renderEcologyCards();
   window.TarinaiSaveSystem?.bindSaveSystem?.();
   uiCache.toolButtons = Array.from(ui.toolPalette?.querySelectorAll(".tool") || []);
   function isActiveToolMode() {
@@ -453,10 +452,10 @@ function bindUI() {
     if (clickedInsideGameOrToolUi(e.target)) return;
     selectTool("observe"); // \u9053\u5177\u8a2d\u7f6e\u30e2\u30fc\u30c9\u3092\u89e3\u9664
   });
-  ui.creditsBtn?.addEventListener("click", () => { audio.uiClick?.(); openCreditsDialog(); });
-  ui.creditsCloseBtn?.addEventListener("click", closeCreditsDialog);
+  ui.creditsBtn?.addEventListener("click", () => { audio.uiClick?.(); ui.creditsDialog?.classList.remove("hidden"); });
+  ui.creditsCloseBtn?.addEventListener("click", () => ui.creditsDialog?.classList.add("hidden"));
   ui.creditsDialog?.addEventListener("click", (e) => {
-    if (e.target === ui.creditsDialog) closeCreditsDialog();
+    if (e.target === ui.creditsDialog) ui.creditsDialog.classList.add("hidden");
   });
   ui.resetBtn?.addEventListener("click", () => {
     audio.uiClick?.();
@@ -587,7 +586,7 @@ function bindUI() {
     closeFieldDialog();
     closeEcologyDialog();
     closeArchiveResetDialog();
-    closeCreditsDialog();
+    ui.creditsDialog?.classList.add("hidden");
   });
 
   window.addEventListener("resize", resizeCanvas);
diff --git a/js/ui_layout_dialogs.js b/js/ui_layout_dialogs.js
index 3d0bfcf..aade08d 100644
--- a/js/ui_layout_dialogs.js
+++ b/js/ui_layout_dialogs.js
@@ -46,10 +46,6 @@ function hydrateLazyImages(root) {
   }
 }
 
-function applyToolTips() {
-  window.TarinaiTooltips?.applyToolPalette?.();
-}
-
 function renderEcologyCards() {
   if (!ui.ecologyGrid || ui.ecologyGrid.dataset.ready === "1") return;
   const cards = window.TEXT_CATALOG?.ecologyCards || [];
@@ -148,14 +144,6 @@ function showToast(text) {
   showToast._timer = setTimeout(() => ui.toast.classList.add("hidden"), 1400);
 }
 
-function openCreditsDialog() {
-  ui.creditsDialog?.classList.remove("hidden");
-}
-
-function closeCreditsDialog() {
-  ui.creditsDialog?.classList.add("hidden");
-}
-
 function syncTopButtons() {
   ui.pauseBtn.textContent = world.paused ? "\u518d\u958b" : "\u4e00\u6642\u505c\u6b62";
   ui.speedBtn.textContent = `\u901f\u5ea6 x${world.speed}`;
diff --git a/js/ui_tooltips.js b/js/ui_tooltips.js
index e7434c0..17c473a 100644
--- a/js/ui_tooltips.js
+++ b/js/ui_tooltips.js
@@ -122,13 +122,9 @@
   }
 
   global.TarinaiTooltips = Object.freeze({
-    ensure: ensureTooltipPopover,
     bind: bindTooltip,
-    show: showTooltip,
     hide: hideTooltip,
     refresh: refreshTooltip,
-    active: () => activeTooltipElement,
     applyToolPalette: applyToolPaletteTooltips,
   });
-  global.bindTooltip = bindTooltip;
 })(window);