/* Landing page, "Khối màu" design — the 'new' arm of the landing experiment. * * Loaded INSTEAD of page-index.css / page-index-v2.css (see the * $pageCssOverride hook in includes/head.php), so none of the old landing rules * are present to fight these. The site's global chrome — main.css, header.css, * footer.css — still loads, which is why the header and footer keep their * current look: the chrome is a separate phase with its own experiment. * * House rules: radius 0, no box-shadow, no gradient, no translucency. * Everything is prefixed .lf- so nothing here can reach the header or footer. * * The prefix used to be .ln-, which collided with includes/learning-nudge-card.php * — that card ships its own inline