:root{
  --bg:#f7fbff;
  --fg:#0e2a3f;
  --muted:#587085;
  --accent: #183d57;
  --card:#ffffff;
  --ring:#dde6ef;
}
*{box-sizing:border-box}
html{height:100%}
body{
  min-height:100%;
  margin:0;
  color:var(--fg);
  background:
    radial-gradient(700px 360px at 10% -10%, rgba(0,119,182,.08), transparent 60%),
    radial-gradient(700px 360px at 90% 110%, rgba(0,180,216,.08), transparent 60%),
    linear-gradient(180deg,#fafdff 0%,#f2f8fd 100%);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Arial, sans-serif;
  padding: max(12px, env(safe-area-inset-top)) 12px 18px;
}
main{
  width:min(980px, 100%);
  margin:0 auto;
  background:var(--card);
  border:1px solid var(--ring);
  border-radius:18px;
  padding:14px 14px 12px;
  box-shadow:0 10px 30px rgba(14,42,63,.08);
}
.header{ margin:4px 0 8px; }
.header img{
  display:block;
  width:90%;           /* fill container width on mobile */
  height:auto;          /* preserve aspect ratio */
  max-width:720px;      /* cap on larger screens */
  margin:0 auto;        /* centered */
}
/* Hide textual H1 but keep for accessibility */
h1{position:absolute; left:-10000px; top:auto; width:1px; height:1px; overflow:hidden}

.cta{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:10px;
  max-width:720px;
  margin:8px auto 8px;
}
a.btn{
  text-decoration:none;
  padding:16px 18px;
  border-radius:12px;
  font-weight:700;
  text-align:center;
  background:var(--accent);
  color:#fff;
  border:1px solid rgba(0,0,0,.06);
  box-shadow:0 6px 18px rgba(0,119,182,.16);
}
a.btn.secondary{
  background:#eaf6ff;
  color:#0e2a3f;
  border:1px solid #cfe7f7;
  box-shadow:none;
}
.grid{
  display:grid; gap:12px; margin-top:45px;
  grid-template-columns:1fr 1fr;
}
.card{border:1px solid var(--ring); border-radius:14px; padding:12px 14px; background:#fff}
.card h3{margin:2px 0 8px 0; font-size:18px}
.card ul{margin:0; padding-left:18px; line-height:1.7; color:#23465f}

footer{margin-top:20px; margin-bottom:20px; text-align:center; color:#6b859b; font-size:13px}
footer a{color:#6b859b}

/* Mobile adjustments */
@media (max-width: 760px){
  main{ padding:12px 10px 10px; border-radius:14px; }
  .cta{ grid-template-columns: 1fr; }
  a.btn{ width:100%; }
  .grid{ grid-template-columns:1fr; }
}