:root {
  --background: #f6f7f9;
  --surface: #ffffff;
  --text: #15171b;
  --muted: #5a616d;
  --border: #e1e4e9;
  --accent: #1f64d8;
  --accent-text: #ffffff;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0d0f12;
    --surface: #171a1f;
    --text: #f2f4f6;
    --muted: #a3aab5;
    --border: #2a2f37;
    --accent: #5b95f5;
    --accent-text: #0d0f12;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

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

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

nav.site {
  display: flex;
  gap: 16px;
  font-size: 15px;
}

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

nav.site a[aria-current="page"],
nav.site a:hover {
  color: var(--text);
}

main {
  padding: 40px 0 56px;
}

h1 {
  font-size: 34px;
  line-height: 1.2;
  margin: 0 0 12px;
}

h2 {
  font-size: 22px;
  line-height: 1.3;
  margin: 36px 0 8px;
}

h3 {
  font-size: 18px;
  margin: 24px 0 4px;
}

p,
ul {
  margin: 0 0 14px;
}

ul {
  padding-left: 22px;
}

li {
  margin-bottom: 6px;
}

.lead {
  font-size: 20px;
  color: var(--muted);
  margin-bottom: 28px;
}

.muted {
  color: var(--muted);
}

.cards {
  display: grid;
  gap: 12px;
  margin: 28px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
}

.card h3 {
  margin-top: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.badge {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 600;
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  font-size: 14px;
  color: var(--muted);
}

footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

footer.site a {
  color: var(--muted);
}

@media (min-width: 640px) {
  h1 {
    font-size: 42px;
  }

  .cards {
    grid-template-columns: 1fr 1fr;
  }
}