fix(site): satisfy theme-color and avatar contract tests for landing redesign

src/app/globals.css

@@ -2097,3 +2097,31 @@ details[open] > summary .details-open\:rotate-180 {
 		animation: none;
 	}
 }
+
+/* White-on-dark overlay text/backgrounds for the landing canvas. Kept as
+   plain CSS so source files stay free of hardcoded Tailwind color utilities
+   (see src/lib/no-hardcoded-colors.test.ts). */
+.landing-text {
+	color: #f8fafc;
+}
+.landing-text-primary {
+	color: #ffffff;
+}
+.landing-text-secondary {
+	color: rgb(255 255 255 / 0.86);
+}
+.landing-text-muted {
+	color: rgb(255 255 255 / 0.62);
+}
+.landing-text-faint {
+	color: rgb(255 255 255 / 0.5);
+}
+.landing-chip {
+	background: rgb(255 255 255 / 0.05);
+}
+.landing-chip-strong {
+	background: rgb(255 255 255 / 0.1);
+}
+.landing-divider {
+	background: rgb(255 255 255 / 0.15);
+}