:root {
  --bg: #ffffff;
  --fg: #1a1d21;
  --muted: #5c6570;
  --line: #e3e7eb;
  --accent: #2563eb;
  --card: #f7f9fb;
  --maxw: 46rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --fg: #e6eaef;
    --muted: #9aa4b0;
    --line: #242a31;
    --accent: #6ea8fe;
    --card: #161b21;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

header.site {
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
}

header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 650;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--fg);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
  margin-left: 1.1rem;
}

nav a:first-child { margin-left: 0; }

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

.lang {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
  font-size: 0.82rem;
}

.lang a {
  padding: 0.24rem 0.62rem;
  text-decoration: none;
  color: var(--muted);
  margin: 0;
}

.lang a[aria-current="true"] {
  background: var(--accent);
  color: #fff;
}

main { padding: 2.6rem 0 4rem; }

h1 {
  font-size: clamp(1.65rem, 4.5vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.16rem;
  letter-spacing: -0.01em;
  margin: 2.4rem 0 0.6rem;
  padding-top: 0.4rem;
}

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

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  margin: 0 0 2rem;
}

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

ul { padding-left: 1.2rem; }

li { margin: 0.3rem 0; }

ol { padding-left: 1.3rem; }

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2.2rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--line);
}

.meta strong { color: var(--fg); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.08em 0.35em;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  margin: 1.5rem 0;
}

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

.card.tldr { border-left: 3px solid var(--accent); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.94rem;
}

th, td {
  text-align: left;
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th { color: var(--muted); font-weight: 600; }

td:first-child { white-space: nowrap; }

@media (max-width: 34rem) {
  td:first-child { white-space: normal; }
}

.scroll { overflow-x: auto; }

footer.site {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

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