*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.65;color:#1f2933;background:#f5f7fa}
header{background:#0b3d6e;color:#fff;padding:20px 16px}
header .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
header a{color:#fff;text-decoration:none}
header .brand{font-size:1.25rem;font-weight:700}
nav a{margin-left:16px;font-size:.95rem;opacity:.9}
nav a:hover{opacity:1;text-decoration:underline}
.wrap{max-width:820px;margin:0 auto}
main{padding:32px 16px 48px}
.card{background:#fff;border-radius:12px;padding:28px;box-shadow:0 1px 4px rgba(0,0,0,.08)}
h1{margin-top:0;font-size:1.7rem;color:#0b3d6e}
h2{font-size:1.2rem;margin-top:1.8em;color:#0b3d6e}
a{color:#0b5cad}
ul{padding-left:22px}
.muted{color:#6b7785;font-size:.9rem}
footer{text-align:center;color:#6b7785;font-size:.85rem;padding:0 16px 32px}