:root {
  color-scheme: light dark;
  --bg: #fbfbfa;
  --fg: #16161a;
  --muted: #6b6b73;
  --line: #e2e2dd;
  --accent: #1b56d6;
  --code-bg: #f2f2ee;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --fg: #e8e8e6;
    --muted: #9a9aa2;
    --line: #2a2a2e;
    --accent: #7ea6ff;
    --code-bg: #1d1d21;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

code, pre {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.875em;
}

header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
}

header nav {
  margin-left: auto;
  display: flex;
  gap: 1rem;
}

header nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
}

header nav a:hover { color: var(--accent); }

main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

h1 { font-size: 2rem; margin: 0 0 0.5rem; letter-spacing: -0.02em; }
h2 { font-size: 1.25rem; margin: 2.5rem 0 1rem; letter-spacing: -0.01em; }
h3 { font-size: 1rem; margin: 0 0 0.5rem; font-weight: 600; }

.lede { font-size: 1.125rem; color: var(--muted); margin: 0 0 1rem; }
.meta, .caption { color: var(--muted); font-size: 0.875rem; }
.muted { color: var(--muted); }
.sep { color: var(--line); padding: 0 0.25rem; }

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

section { border-top: 1px solid var(--line); }
section:first-of-type { border-top: none; }

article {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

article:last-child { border-bottom: none; }
article p { margin: 0.25rem 0; }

.badge {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  vertical-align: middle;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  overflow-x: auto;
  margin: 0.75rem 0 0.25rem;
}

pre code { background: none; padding: 0; }

code {
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

h3 code { background: none; padding: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5rem 0;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.75rem 0.5rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 500;
}

dl { margin: 0; }
dt { margin-top: 0.75rem; }
dd { margin: 0.25rem 0 0; color: var(--muted); }

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  margin-top: 1.5rem;
}

.card {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s;
}

.card:hover { border-color: var(--accent); }
.card h2 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.card p { margin: 0 0 0.35rem; font-size: 0.9rem; color: var(--muted); }

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem;
  text-align: center;
}

footer p { margin: 0; color: var(--muted); font-size: 0.8125rem; }