* { box-sizing: border-box; }
body {
  margin: 0;
  font: 1rem/1.55 system-ui, sans-serif;
  background: #f4f7f9;
  color: #17232d;
}
main { max-width: 48rem; margin: 0 auto; padding: 1.5rem; }
.brand { font-size: .9rem; color: #395363; }
a { color: #135b84; }
section {
  margin: 1.5rem 0;
  padding: 1.4rem;
  background: white;
  border: 1px solid #d7e2e7;
  border-radius: .75rem;
}
label { display: block; margin-top: 1rem; font-weight: 700; }
input, select, button {
  display: block;
  width: 100%;
  padding: .75rem;
  font: inherit;
  border-radius: .4rem;
}
input, select { border: 1px solid #667f90; background: white; }
button {
  margin-top: 1.3rem;
  border: 0;
  background: #165579;
  color: white;
  font-weight: 700;
  cursor: pointer;
}
button:disabled { opacity: .65; cursor: wait; }
pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: #f7f9fa;
  padding: 1rem;
  border-radius: .4rem;
}
:focus-visible { outline: 3px solid #dd8f16; outline-offset: 3px; }
@media (max-width: 35rem) { main { padding: .75rem; } section { padding: 1rem; } }