:root {
  --bg: #eef3f2;
  --card: #ffffff;
  --text: #15191b;
  --muted: #565f62;
  --line: #dfe5e4;
  --brand: #166959;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1514;
    --card: #182120;
    --text: #e8eeed;
    --muted: #a3afad;
    --line: #2a3533;
    --brand: #4cc7ae;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    16px / 1.6 Inter,
    -apple-system,
    "Segoe UI",
    Roboto,
    Arial,
    sans-serif;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}
header.top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
header.top img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}
header.top a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 20px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
}
h1 {
  font-size: 26px;
  line-height: 1.25;
  margin: 0 0 8px;
}
h2 {
  font-size: 18px;
  margin: 28px 0 8px;
  color: var(--brand);
}
p,
li {
  margin: 6px 0;
}
ul {
  padding-left: 20px;
}
a {
  color: var(--brand);
}
.muted {
  color: var(--muted);
  font-size: 14px;
}
nav.links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
  font-size: 15px;
}
footer {
  margin-top: 24px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}