:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #16181d;
  --muted: #5c6470;
  --rule: #e3e6ea;
  --accent: #2f7d5d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --card: #16191e;
    --ink: #e9ecf1;
    --muted: #9aa3b0;
    --rule: #262b33;
    --accent: #6cd3a3;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 20px 80px;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
}

header.site {
  padding: 34px 0 26px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 34px;
}

header.site a.brand {
  font-size: 15px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

h1 {
  font-size: 30px;
  line-height: 1.2;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 20px;
  margin: 36px 0 10px;
  letter-spacing: -0.01em;
}

p, ul { margin: 0 0 16px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }

.updated {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 30px;
}

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

.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 22px 24px;
  margin: 26px 0;
}

footer.site {
  margin-top: 56px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 15px;
}

footer.site a { margin-right: 18px; }

.hero {
  padding: 60px 0 10px;
  text-align: center;
}

.hero h1 { font-size: 40px; }

.hero p.tagline {
  color: var(--muted);
  font-size: 19px;
  max-width: 34ch;
  margin: 0 auto 30px;
}