:root{--poa-primary:#003366;--poa-accent:#0078D4;--ink:#111827;--muted:#6B7280;--bg:#ffffff;--radius:12px}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font-family:Segoe UI,Roboto,Inter,system-ui,-apple-system,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--poa-accent);text-decoration:none}

.header{background:linear-gradient(135deg,var(--poa-primary),#022a55);color:#fff}
.header .wrap{max-width:980px;margin:0 auto;padding:28px 16px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px}
.brand-logo{max-width:480px;width:100%;height:auto}
.subtitle{margin:0;font-weight:600;opacity:.95}

.nav{background:#0b3a6d}
.nav .wrap{max-width:980px;margin:0 auto;padding:8px 16px;display:flex;gap:16px;justify-content:center}
.nav a{color:#d9edff}

.main{max-width:980px;margin:20px auto;padding:0 16px}
.notice{padding:14px;border-radius:var(--radius);background:#eef6ff;border:1px solid #cfe3ff;margin-bottom:16px}

.cards{display:grid;grid-template-columns:repeat(2, minmax(300px,1fr));gap:16px;margin:16px 0}
@media(max-width:760px){.cards{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid #e5e7eb;border-radius:var(--radius);padding:18px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.card h3{margin-top:0;color:var(--poa-primary)}

.btn{display:inline-block;background:var(--poa-accent);color:#fff;padding:.65rem 1rem;border-radius:10px;font-weight:700}
.btn-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:.6rem 0 .2rem}

.footer{margin-top:28px;padding:22px;background:#f8fafc;color:#64748b;text-align:center}
code{background:#f3f4f6;border:1px solid #e5e7eb;border-radius:6px;padding:2px 6px}

.span-2{grid-column:1 / -1}