:root {
  --bg: #0c0d10;
  --panel: #131419;
  --fg: #e6e7ea;
  --muted: #8f939d;
  --line: #22242b;
  --accent: #7c8cff;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.01em;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
}

header.site {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(12, 13, 16, 0.85);
  backdrop-filter: blur(8px);
  z-index: 10;
}

header.site .inner {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--fg);
  text-decoration: none;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  margin-left: 1.25rem;
}

nav a:hover, nav a:focus { color: var(--fg); }

h1 {
  font-size: 2rem;
  line-height: 1.25;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.05rem;
  margin: 2.5rem 0 0.75rem;
  letter-spacing: 0.02em;
}

h3 {
  font-size: 0.95rem;
  margin: 1.75rem 0 0.5rem;
  color: var(--fg);
}

p, li { color: var(--fg); }

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

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

small.updated {
  display: block;
  color: var(--muted);
  margin-bottom: 2.5rem;
  font-size: 0.85rem;
}

ul { padding-left: 1.2rem; }
li { margin: 0.4rem 0; }

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  margin: 2rem 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem;
}

.card h3 { margin: 0 0 0.4rem; font-size: 0.9rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.9rem; }

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

footer.site {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.85rem;
}

footer.site .inner {
  max-width: 44rem;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

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

@media (max-width: 36rem) {
  .wrap { padding-top: 2.5rem; }
  h1 { font-size: 1.6rem; }
}