:root {
  color-scheme: light dark;
  --text: #1c1c1e;
  --secondary: #5c5c63;
  --background: #f2f2f7;
  --card: #ffffff;
  --accent: #1a4db8;
  --brand: linear-gradient(135deg, #2464e9, #0d9488);
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f2f7;
    --secondary: #a1a1a8;
    --background: #000000;
    --card: #1c1c1e;
    --accent: #60a5fa;
    --brand: linear-gradient(135deg, #1d4ed8, #0f766e);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.55 ui-rounded, -apple-system, BlinkMacSystemFont, "SF Pro Rounded", "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

header a {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brand);
  display: grid;
  place-items: center;
  color: #ffffff;
  font-size: 22px;
  font-weight: 700;
}

.name {
  font-size: 20px;
  font-weight: 600;
}

h1 {
  font-size: 34px;
  line-height: 1.2;
  margin: 0 0 8px;
}

h2 {
  font-size: 19px;
  margin: 28px 0 6px;
}

p {
  margin: 0 0 12px;
}

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

.updated {
  color: var(--secondary);
  font-size: 15px;
  margin-bottom: 24px;
}

.card {
  background: var(--card);
  border-radius: 20px;
  padding: 8px 24px 16px;
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 32px;
  font-size: 15px;
}