feat(前端界面): 优化OFDGo WebUI体验

assets/webui/ofdgo.css

@@ -10,7 +10,7 @@
 	--text-muted: #66737f;
 	--accent: #0f7b68;
 	--accent-strong: #095c4e;
-	--focus: #c9892b;
+	--focus: #0f7b68;
 	--sidebar-width: clamp(220px, 20vw, 292px);
 	--bar-bg: #fbfcfd;
 	--bar-height: 40px;

assets/webui/ofdgo.js

@@ -128,7 +128,7 @@ const el = {
 el.ofdButton.addEventListener("click", openOFDFile);
 el.togglePagesButton.addEventListener("click", () => toggleSidebar("pages"));
 el.toggleMetaButton.addEventListener("click", () => toggleSidebar("meta"));
-el.fontAddButton.addEventListener("click", () => el.fontInput.click());
+el.fontAddButton.addEventListener("click", openFontFile);
 el.localFontButton.addEventListener("click", loadLocalFonts);
 el.ofdInput.addEventListener("change", openSelectedOFD);
 el.fontInput.addEventListener("change", openSelectedFonts);
@@ -167,6 +167,7 @@ async function openOFDFile() {
 		return;
 	}
 	await requestLocalFontsBeforeOpen();
+	el.ofdInput.value = "";
 	el.ofdInput.click();
 }
 
@@ -177,6 +178,11 @@ async function openOFDFromViewer() {
 	await openOFDFile();
 }
 
+function openFontFile() {
+	el.fontInput.value = "";
+	el.fontInput.click();
+}
+
 function toggleSidebar(side) {
 	if (side === "pages") {
 		state.showPages = !state.showPages;