Support: add a feedback email, rebrand from Donate, tighten privacy copy

src/app/components/AboutModal.module.css

@@ -36,6 +36,26 @@
   color: var(--text-secondary);
 }
 
+/* Inline accent link. Restated as DonateModal's `.email` — the two are the same
+   recipe; a shared link primitive would be the home if a third site appears. */
+/* TODO: if inline accent links recur, lift this recipe to a base.css element
+   baseline or a small primitive rather than copying it a third time. */
+.link {
+  color: var(--accent);
+  font-weight: 600;
+  text-decoration: none;
+}
+
+.link:hover {
+  text-decoration: underline;
+}
+
+.link:focus-visible {
+  outline: 2px solid var(--focus);
+  outline-offset: 2px;
+  border-radius: var(--radius);
+}
+
 /* Shortcuts table */
 .shortcuts {
   border-collapse: collapse;