body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: #f4f6f9;
  color: #111827;
}
.card {
  max-width: 860px;
  margin: 48px auto;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 10px 25px rgba(0,0,0,.05);
}
h1 { margin: 0 0 8px 0; font-size: 28px; }
h2 { margin-top: 22px; font-size: 18px; }
p, li { line-height: 1.55; }
.muted { color: #6b7280; }
.links { display: flex; gap: 12px; margin: 18px 0; }
.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
  text-decoration: none;
  color: #111827;
  background: #f9fafb;
}
.btn:hover { background: #f3f4f6; }
.footer { margin-top: 22px; font-size: 13px; color: #6b7280; }
a { color: #2563eb; }