:root {
  --fg: #1a1a1a;
  --fg-muted: #555;
  --bg: #fafafa;
  --card-bg: #ffffff;
  --border: #e5e5e5;
  --link: #0066cc;
  --link-hover: #004080;
  --accent: #ff7a00;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, "Cascadia Mono", "Roboto Mono", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8e8e8;
    --fg-muted: #a8a8a8;
    --bg: #181818;
    --card-bg: #222;
    --border: #333;
    --link: #66b3ff;
    --link-hover: #99ccff;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

header {
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

header p.tagline {
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin: 0;
  max-width: 720px;
}

nav.crumbs {
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

nav.crumbs a {
  color: var(--link);
  text-decoration: none;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, transform 0.15s;
  display: block;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.card h2 {
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
  color: var(--fg);
}

.card .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
  color: var(--fg-muted);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--fg-muted);
}

section {
  margin-top: 3rem;
}

section h2 {
  font-size: 1.4rem;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

section p {
  color: var(--fg-muted);
  max-width: 720px;
}

code, pre {
  font-family: var(--mono);
  font-size: 0.9em;
}

code {
  background: rgba(127, 127, 127, 0.12);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

pre {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  line-height: 1.5;
}

pre code {
  background: transparent;
  padding: 0;
}

a { color: var(--link); }
a:hover { color: var(--link-hover); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  font-size: 0.95rem;
}

th {
  font-weight: 600;
  color: var(--fg);
  background: var(--card-bg);
}

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 0.9rem;
}