case 'phone':
            $d = $ctx['entity'];
            $phone_url = $site . '/phone/' . $d->slug;

            // Breadcrumb
            $graph[] = [
                '@type' => 'BreadcrumbList',
                '@id'   => $phone_url . '#breadcrumb',
                'itemListElement' => [
                    ['@type'=>'ListItem','position'=>1,'name'=>'Home','item'=>$site . '/'],
                    ['@type'=>'ListItem','position'=>2,'name'=>'Brands','item'=>$site . '/brands'],
                    ['@type'=>'ListItem','position'=>3,'name'=>$d->brand_name,'item'=>$site . '/brand/' . $d->brand_slug],
                    ['@type'=>'ListItem','position'=>4,'name'=>$d->model],
                ],
            ];

            // Product
            $product = [
                '@type' => 'Product',
                '@id'   => $phone_url . '#product',
                'name'  => $d->brand_name . ' ' . $d->model,
                'url'   => $phone_url,
                'sku'   => $d->slug,
                'mpn'   => $d->slug,
                'description' => ryv_trim_desc($d->meta_description ?: ryv_first_words($d->about_content, 60), 300),
                'brand' => [
                    '@type' => 'Brand',
                    'name'  => $d->brand_name,
                    'url'   => $site . '/brand/' . $d->brand_slug,
                ],
            ];

            if ($d->released_date)   $product['releaseDate'] = $d->released_date;
            if ($d->category_name)   $product['category']    = $d->category_name;

            if ($d->image_url) {
                $product['image'] = [[
                    '@type' => 'ImageObject',
                    'url'    => $d->image_url,
                    'caption'=> 'Official image of ' . $d->brand_name . ' ' . $d->model,
                    'representativeOfPage' => true,
                ]];
            }

            // Additional specs
            $specs = [
                'Display Size'        => $d->display_size ?? '',
                'Display Type'        => $d->display_type ?? '',
                'Resolution'          => $d->display_resolution ?? '',
                'Battery Capacity'    => $d->battery_capacity ?? '',
                'Chipset'             => $d->chipset ?? '',
                'CPU'                 => $d->cpu ?? '',
                'GPU'                 => $d->gpu ?? '',
                'RAM'                 => $d->ram_available ?? '',
                'Storage'             => $d->storage_available ?? '',
                'Main Camera'         => $d->camera_main ?? '',
                'Selfie Camera'       => $d->camera_selfie ?? '',
                'Operating System'    => $d->platform_os ?? '',
                'Weight'              => $d->weight ?? '',
                'Dimensions'          => $d->dimensions ?? '',
                'SIM Slot'            => $d->sim_slot ?? '',
                'Connectivity'        => $d->connectivity ?? '',
                'Sensors'             => $d->sensors ?? '',
                'Colors'              => $d->colors_available ?? '',
            ];
            $props = [];
            foreach ($specs as $name => $value) {
                $value = trim((string)$value);
                if ($value !== '') {
                    $props[] = ['@type'=>'PropertyValue','name'=>$name,'value'=>$value];
                }
            }
            if ($props) $product['additionalProperty'] = $props;

            // Related devices
            $related = ryv_related_devices($d->brand_id, $d->id, 3);
            if ($related) {
                $similar = [];
                foreach ($related as $r) {
                    $similar[] = [
                        '@type' => 'Product',
                        'name'  => $r->model,
                        'url'   => $site . '/phone/' . $r->slug,
                    ];
                }
                $product['isSimilarTo'] = $similar;
            }

            // ============================================================
            // FIX (Error #3): Add offers + price for rich result eligibility
            // Only emitted when a real price > 0 exists (avoids $0.00 flag).
            // ============================================================
            if (!empty($d->price) && is_numeric($d->price) && (float)$d->price > 0) {
                $currency = apply_filters('ryv_product_price_currency', 'USD', $d);
                $product['offers'] = [
                    '@type'          => 'Offer',
                    'url'            => $phone_url,
                    'priceCurrency'  => $currency,
                    'price'          => number_format((float)$d->price, 2, '.', ''),
                    'availability'   => 'https://schema.org/InStock',
                    'priceValidUntil' => gmdate('Y-m-d', strtotime('+1 year')),
                ];
            }

            $graph[] = $product;

            // WebPage wrapper
            $graph[] = [
                '@type' => 'WebPage',
                '@id'   => $phone_url . '#webpage',
                'url'   => $phone_url,
                'name'  => ryv_filter_document_title(''),
                'breadcrumb' => ['@id' => $phone_url . '#breadcrumb'],
                'mainEntity' => ['@id' => $phone_url . '#product'],
            ];
            break;
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