feat: one breadcrumb, same place and style on every inner page

- Plugin: vc_breadcrumb_trail()/vc_breadcrumb_html(); tours, region, city
  and tag pages show Home / (Region) / Page in the banner instead of the
  generic 'Tour & Travel' label; the tour page uses the same helper
- Theme: blog list shows Home / Blog; blog post title, breadcrumb and
  meta move into the banner like the other pages
- Shared style: title's colour (white in photo banners, black on About),
  softer links, current page bold and shortened if long - also on phones
- Plugin 1.9.6, theme 1.0.16

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

viator-collector/includes/helpers.php

@@ -617,6 +617,64 @@ function vc_icon( $name, $extra_class = '' ) {
 	return '<svg class="' . esc_attr( $class ) . '" aria-hidden="true"><use href="#' . esc_attr( $name ) . '"></use></svg>';
 }
 
+/**
+ * Breadcrumb trail for the current Viator view: list of [label, url] links
+ * (Home first); the current page itself is not included.
+ *   tours archive  Home
+ *   region / city  Home › Region (for a city)
+ *   tag / category Home › Tours
+ *   single tour    Home › Region › City (its canonical city)
+ *   other pages    Home
+ */
+function vc_breadcrumb_trail() {
+	$trail = array( array( __( 'Home', 'viator-collector' ), home_url( '/' ) ) );
+
+	$city = null;
+	if ( is_tax( 'viator_destination' ) ) {
+		$term = get_queried_object();
+		if ( $term instanceof WP_Term && $term->parent ) {
+			$city = $term; // its parent (region) is added below
+		}
+	} elseif ( is_tax( array( 'viator_tag', 'viator_category' ) ) ) {
+		$trail[] = array( __( 'Tours', 'viator-collector' ), get_post_type_archive_link( 'viator_tour' ) );
+	} elseif ( is_singular( 'viator_tour' ) ) {
+		$post_id   = get_queried_object_id();
+		$city_slug = class_exists( 'VC_Routing' ) ? VC_Routing::product_city( $post_id ) : '';
+		$city      = $city_slug ? get_term_by( 'slug', $city_slug, 'viator_destination' ) : null;
+		if ( ! $city ) {
+			$terms = get_the_terms( $post_id, 'viator_destination' );
+			$city  = ( $terms && ! is_wp_error( $terms ) ) ? $terms[0] : null;
+		}
+	}
+
+	if ( $city instanceof WP_Term ) {
+		if ( $city->parent ) {
+			$region = get_term( $city->parent, 'viator_destination' );
+			if ( $region instanceof WP_Term && ! is_wp_error( get_term_link( $region ) ) ) {
+				$trail[] = array( $region->name, get_term_link( $region ) );
+			}
+		}
+		// On a city archive the city is the current page, not a link.
+		if ( is_singular( 'viator_tour' ) && ! is_wp_error( get_term_link( $city ) ) ) {
+			$trail[] = array( $city->name, get_term_link( $city ) );
+		}
+	}
+
+	return apply_filters( 'vc_breadcrumb_trail', $trail );
+}
+
+/**
+ * Breadcrumb markup shared by every page (the theme's design pages print the
+ * same structure): links, then the current page in bold.
+ */
+function vc_breadcrumb_html( array $trail, $current, $extra_class = '' ) {
+	$out = '<nav class="crumbs' . ( $extra_class ? ' ' . esc_attr( $extra_class ) : '' ) . '" aria-label="' . esc_attr__( 'Breadcrumb', 'viator-collector' ) . '"><ol class="crumbs__list">';
+	foreach ( $trail as $item ) {
+		$out .= '<li><a href="' . esc_url( $item[1] ) . '">' . esc_html( $item[0] ) . '</a></li>';
+	}
+	return $out . '<li aria-current="page">' . esc_html( $current ) . '</li></ol></nav>';
+}
+
 /**
  * Rotating ring badge (the circular "BOOK NOW ·" anchor in the design).
  *