:root {
  --calcadao: #15171a;
  --pedra: #eef1ec;
  --papel: #ffffff;
  --muted: #5b6168;
  --mate: #f5c400;
  --mar: #0f5c6e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--pedra);
  color: var(--calcadao);
  font-family: "Onest", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.65;
}

.top {
  background: var(--calcadao);
  padding: 14px 20px;
}

.back {
  color: var(--mate);
  font-weight: 700;
  text-decoration: none;
}

.back:hover,
.back:focus-visible {
  text-decoration: underline;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

h1 {
  font-size: clamp(1.8rem, 5vw, 2.4rem);
  line-height: 1.15;
  margin: 0 0 4px;
}

h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.5rem;
}

.updated {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

ul,
ol {
  padding-left: 1.25rem;
}

li {
  margin: 0.35rem 0;
}

a {
  color: var(--mar);
}

a:focus-visible {
  outline: 3px solid var(--mar);
  outline-offset: 2px;
}

.foot {
  border-top: 1px solid #d8ddd6;
  padding: 20px;
  text-align: center;
}

.foot a {
  color: var(--muted);
  text-decoration: none;
}