修复移动端目录悬浮球，修复文章页布局，优化画廊

src/components/ScrollReveal.astro

@@ -0,0 +1,31 @@
+---
+---
+
+<script is:inline>
+  (function(){
+    var enabled = !document.documentElement.classList.contains("wi-no-animations");
+    if (!enabled) {
+      document.querySelectorAll(".wi-reveal").forEach(function(el) {
+        el.classList.add("wi-revealed");
+      });
+      return;
+    }
+    if (!("IntersectionObserver" in window)) {
+      document.querySelectorAll(".wi-reveal").forEach(function(el) {
+        el.classList.add("wi-revealed");
+      });
+      return;
+    }
+    var observer = new IntersectionObserver(function(entries) {
+      entries.forEach(function(entry) {
+        if (entry.isIntersecting) {
+          entry.target.classList.add("wi-revealed");
+          observer.unobserve(entry.target);
+        }
+      });
+    }, { threshold: 0.1, rootMargin: "0px 0px -40px 0px" });
+    document.querySelectorAll(".wi-reveal").forEach(function(el) {
+      observer.observe(el);
+    });
+  })();
+</script>