Landing page prototypeLanding page prototype

The whole page as one document. `meta`: title (browser tab), description, lang, dir (rtl for Arabic/Hebrew; inferred from lang when absent), theme (product = software, editorial = publication/studio/service, bold = launch or event), accent (#rrggbb, darkened or lightened automatically until it passes contrast), showPrototypeBadge. `sections`: an ordered list drawn top to bottom; each has a `type`, an optional `id` for #anchors, and that type's fields. Types: nav (wordmark, links, cta — always drawn at the top), hero (variant centered|split|stacked-visual|minimal-type, title, subtitle, primary, secondary, note, visual), logos (items of name; placeholder:true when the names are not real customers), features (variant grid|alternating|bento|list; items of title, text, icon, visual, points), steps, stats (value as written, label, source), testimonials (quote, name, role, placeholder), pricing (currency, period, annualNote, monthlyLabel/annualLabel/billedYearly to translate the switch, tiers with price.monthly/price.annual as numbers or price.label as text, features, highlight, badge, cta), faq (q, a; the first opens), comparison (columns, highlight index, rows of label + values where true/false draw a tick or a cross), gallery (items of visual + caption), video (a poster visual, duration; a placeholder, plays nothing), newsletter (inputLabel, button, success; sends nothing), cta, footer (wordmark, text, groups of links, legal). A link is {label, href} with href https://, http://, mailto: or #anchor. A visual is {art, alt} from the built-in set, {src, alt} for an https or data:image URL, or {svg, alt} for inline SVG markup (drawn as an image, so scripts never run).