fix(nav): stop click ripple from stretching CTA chips

.aksrt-wave was injected into .but without position:absolute, so the
oversized span expanded header publish/VIP buttons on click. Make the
wave absolute, honor .nowave, and skip navbar CTA roots.

assets/css/core/components-ext.css

@@ -541,6 +541,35 @@
   }
 }
 
+/* Runtime broad ripple (.aksrt-wave injected into .but/.btn).
+ * MUST stay out of flow — missing absolute made header CTA grow on click. */
+.aksrt-wave {
+  position: absolute !important;
+  border-radius: 50%;
+  background: rgba(255, 255, 255, 0.35);
+  pointer-events: none !important;
+  z-index: 1;
+  transform: scale(0);
+  animation: aksrtWaveRipple 0.6s ease-out forwards;
+}
+
+@keyframes aksrtWaveRipple {
+  to {
+    transform: scale(1);
+    opacity: 0;
+  }
+}
+
+/* Header CTA chips: never host layout-affecting ripple children */
+.navbar-top a.navbar-cta,
+.navbar-top a.newadd-btns,
+.navbar-top a.payvip-icon.navbar-cta,
+.navbar-top .navbar-but .but,
+.navbar-top .navbar-vip a.but,
+.nowave {
+  overflow: hidden;
+}
+
 /* ============================================================
  * 10. 模态框堆叠动画 — 父模态缩小
  * ============================================================ */

assets/css/frontend/nav.css

@@ -636,3 +636,24 @@ body.dark-theme .navbar-but-cluster .toggle-theme .theme-icon-sun {
     display: none !important;
   }
 }
+
+/* Absolute-size CTA chips: ignore injected .aksrt-wave for layout */
+.navbar-top a.navbar-cta,
+.navbar-top a.newadd-btns.navbar-cta,
+.navbar-top a.navbar-newposts.navbar-cta,
+.navbar-top a.payvip-icon.navbar-cta,
+.navbar-top .navbar-but .but,
+.navbar-top .navbar-form.navbar-but a.but,
+.navbar-top .navbar-form.navbar-vip a.but {
+  position: relative !important;
+  overflow: hidden !important;
+  flex: 0 0 auto !important;
+}
+.navbar-top a.navbar-cta > .aksrt-wave,
+.navbar-top a.but > .aksrt-wave,
+.navbar-top .but > .aksrt-wave {
+  position: absolute !important;
+  pointer-events: none !important;
+  margin: 0 !important;
+  flex: none !important;
+}