:root{--pico-primary:#1b5a9d;--pico-primary-hover:#164a80;--pico-border-radius:1.1rem}header.hero{padding:3rem 0 1.5rem;background:radial-gradient( 900px 400px at 20% 0%,rgba(27,90,157,0.18),transparent 60% ),#f9fbff;border-bottom:1px solid rgba(0,0,0,0.08);margin-bottom:1.75rem}.grid3{display:grid;grid-template-columns:1fr;gap:1rem}@media (min-width:900px){.grid3{grid-template-columns:repeat(3,1fr)}}.kicker{font-size:0.95rem;opacity:0.75}.callout{border-left:6px solid var(--pico-primary);padding-left:1rem}a:focus-visible,button:focus-visible{outline:3px solid #000;outline-offset:2px}.skip-link{position:absolute;left:-999px;top:0;padding:0.6rem 1rem;border-radius:999px}.skip-link:focus{left:1rem;top:1rem}.quick-links{display:flex;gap:0.5rem;flex-wrap:wrap}.prompt-pre{white-space:pre-wrap;overflow:auto;padding:1rem 1.1rem;border-radius:12px}.footer-row{padding:1.5rem 0;color:#425469;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center}.footer-row a{color:#1f4f86}.footer-row a:hover{color:#163a64}