html, body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color: #1a1a1a; background: #fff; }
main { max-width: 520px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.25rem; margin: 8px 0 12px; }
#status { min-height: 1.5em; }
#consent { width: 100%; min-height: 720px; }
#back { display: inline-block; margin-top: 12px; }
#back[hidden] { display: none; }
/* Mastercard's ConsentUI.js sizes its iframe with inline styles, which the page CSP (style-src 'self') blocks by
   design; size it here instead (4c.7). */
#consent iframe { display: block; width: 100%; height: 760px; border: 0; }