Search or browse Nike products

Searches Nike.com product listings by keyword, or browses a category/subcategory listing by slug, with real pagination. Exactly one of keyword or category is required. Returns product groups with pricing, colorway images, and every purchasable color variant, plus filter and subcategory navigation data (facet_nav) already present on the same response -- both keyword search and a category listing's first page include filter groups (Gender, Color, Price, Size, and similar); only a category listing includes a breadcrumb trail and subcategory drill-down options, and only its first page (a category listing's later pages do not repeat navigation data). Keyword search is best-effort relevance, not a guaranteed keyword match: for an obscure or nonsense keyword, Nike's own search index falls back to its own recommended results instead of returning an empty list, and there is currently no reliable signal in the response to distinguish a true keyword match from that fallback behavior. A keyword Nike's own search router treats as structurally empty (for example a punctuation-only query) does return a genuine empty result. Category values come from nike-categories' own slug field, or from a prior response's own facet_nav navigation paths (with the leading /w/ stripped). Requesting a page beyond the available result pages returns a not-found error.