*,
*::before,
*::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: #f4f4f1;
  color: #202223;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

.card {
  background: #fff;
  border: 1px solid #e1e3e5;
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 20px;
}

h1, h2 {
  margin: 0 0 16px;
  line-height: 1.2;
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 20px;
}

p, li {
  line-height: 1.7;
  margin: 0 0 12px;
}

ul {
  margin: 0;
  padding-left: 20px;
}

.muted {
  color: #616161;
}

.lang {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #6d7175;
  margin-bottom: 10px;
}

a {
  color: #005bd3;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: #f6f6f7;
  padding: 2px 6px;
  border-radius: 6px;
}

@media (max-width: 760px) {
  .page { padding: 24px 12px 48px; }
  .card { padding: 20px; }
  h1 { font-size: 28px; }
}