:root{--blue:#0b2a5b;--graphite:#2f343b;--off:#f7f6f2;--green:#1fa463;--muted:#5f6670;--line:#e3e1da}
*{box-sizing:border-box}
body{margin:0;background:var(--off);color:var(--graphite);font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.65;font-size:17px}
header{background:var(--blue);color:#fff;padding:18px 16px}
header .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
header a{color:#fff;text-decoration:none}
.brand{font-weight:700;font-size:20px;letter-spacing:.2px}
.brand span{color:var(--green)}
nav a{margin-left:16px;font-size:15px;opacity:.9}
nav a:hover{opacity:1;text-decoration:underline}
.wrap{max-width:860px;margin:0 auto}
main{padding:40px 16px 64px}
h1{color:var(--blue);font-size:32px;line-height:1.25;margin:0 0 8px}
h2{color:var(--blue);font-size:22px;margin:36px 0 8px}
h3{font-size:18px;margin:24px 0 6px}
p,li{color:var(--graphite)}
.muted{color:var(--muted);font-size:15px}
a{color:var(--blue)}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin:16px 0}
.btn{display:inline-block;background:var(--green);color:#fff;padding:12px 22px;border-radius:999px;text-decoration:none;font-weight:600}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
footer{border-top:1px solid var(--line);padding:24px 16px;font-size:14px;color:var(--muted)}
footer a{color:var(--muted);margin-right:14px}
@media (max-width:600px){h1{font-size:26px}nav a{margin:0 12px 0 0}}