feat: 添加学习部分展开/收起功能，优化用户体验

public/themes/dist_static/static/css/investment.css

@@ -292,6 +292,9 @@
   padding: 0;
   list-style: none;
 }
+.iv-learn__list:not(.is-expanded) .iv-learn__item:nth-child(n+7) {
+  display: none;
+}
 .iv-learn__item {
   display: grid;
   grid-template-columns: 8.75rem minmax(0, 1fr) auto;
@@ -378,9 +381,19 @@
 .iv-learn__more-icon--up {
   opacity: 0.35;
   transform: scaleY(-1);
+  transition: opacity var(--duration-fast) var(--easing), transform var(--duration-fast) var(--easing);
 }
 .iv-learn__more-icon--down {
   opacity: 1;
+  transition: opacity var(--duration-fast) var(--easing), transform var(--duration-fast) var(--easing);
+}
+.iv-learn__more.is-expanded .iv-learn__more-icon--up {
+  opacity: 1;
+  transform: scaleY(1);
+}
+.iv-learn__more.is-expanded .iv-learn__more-icon--down {
+  opacity: 0.35;
+  transform: scaleY(-1);
 }
 
 .iv-hotline {

public/themes/dist_static/static/js/investment.js

@@ -47,9 +47,24 @@ function initLearnItemClick() {
 		if (href) window.location.href = href;
 	});
 }
+function initLearnToggle() {
+	const list = document.querySelector(".iv-learn__list");
+	const btn = document.querySelector(".iv-learn__more");
+	if (!list || !btn) return;
+	const items = list.querySelectorAll(".iv-learn__item");
+	if (items.length <= 6) {
+		btn.style.display = "none";
+		return;
+	}
+	btn.addEventListener("click", () => {
+		list.classList.toggle("is-expanded");
+		btn.classList.toggle("is-expanded");
+	});
+}
 $(function() {
 	setActiveNav();
 	initAnnounceSwiper();
 	initLearnItemClick();
+	initLearnToggle();
 });
 //#endregion