'init'

app/components/custom/CustomAnimateOnScroll.tsx

@@ -0,0 +1,43 @@
+"use client";
+
+/**
+ * 自实现滚动入场动画 - 封装待用
+ * 基于 IntersectionObserver，无第三方依赖
+ */
+
+import { useEffect, useRef, useState, type ReactNode } from "react";
+
+type Props = {
+  children: ReactNode;
+  className?: string;
+  delay?: number;
+};
+
+export function CustomAnimateOnScroll({ children, className = "", delay = 0 }: Props) {
+  const ref = useRef<HTMLDivElement>(null);
+  const [visible, setVisible] = useState(false);
+
+  useEffect(() => {
+    const el = ref.current;
+    if (!el) return;
+
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (entry.isIntersecting) setVisible(true);
+      },
+      { threshold: 0.08, rootMargin: "0px 0px -40px 0px" }
+    );
+    observer.observe(el);
+    return () => observer.disconnect();
+  }, []);
+
+  return (
+    <div
+      ref={ref}
+      className={`animate-on-scroll ${visible ? "animate-on-scroll-visible" : ""} ${className}`}
+      style={{ transitionDelay: `${delay}ms` }}
+    >
+      {children}
+    </div>
+  );
+}