body{font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin:0;color:#1d2433;background:#f6f7fb;line-height:1.6}
header{background:#1f3a68;color:#fff;padding:28px 20px;text-align:center}
header h1{margin:0;font-size:2rem}header p{margin:6px 0 0;opacity:.9}
main{max-width:760px;margin:0 auto;padding:24px 20px 48px}
section{background:#fff;border-radius:12px;padding:20px 24px;margin:18px 0;box-shadow:0 1px 3px rgba(0,0,0,.08)}
h2{margin-top:0;color:#1f3a68;font-size:1.3rem}
.sample{background:#eef2fa;border-left:4px solid #1f3a68;padding:12px 16px;border-radius:6px;font-family:inherit}
footer{text-align:center;font-size:.9rem;color:#5b6475;padding:0 20px 32px}
a{color:#1f3a68}