h1,h2,h3{margin:.25rem 0 .5rem}p{margin:.25rem 0 .75rem}ul{margin:.25rem 0 .75rem 1.25rem}section{margin:1rem 0}:root{--brand: #0A2A66;--ink: #111;--bg: #ffffff;--muted: #6b7280;--surface: #f6f7f9}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}.app-shell{display:grid;grid-template-rows:auto auto 1fr auto;min-height:100dvh}.top-nav{background:var(--surface);padding:.5rem 1rem;display:flex;gap:1rem;border-top:1px solid #e5e7eb;border-bottom:1px solid #e5e7eb;overflow-x:auto}.top-nav a{color:var(--ink);text-decoration:none;padding:.4rem .6rem;border-radius:.5rem}.top-nav a.active{background:var(--brand);color:#fff}.content{max-width:960px;width:100%;margin:0 auto;padding:1.25rem}.card{border:1px solid #e5e7eb;border-radius:.75rem;padding:1rem 1.25rem;background:#fff;margin:1rem 0}.muted{color:var(--muted)}.cta-button{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;padding:.75rem 1rem;border-radius:.75rem;font-weight:600}.cta-button:focus{outline:3px solid #93c5fd;outline-offset:2px}