:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e7ecf3;
  --muted: #9aa8bc;
  --accent: #6cb6ff;
  --accent-hover: #9dceff;
  --ok: #3dd68c;
  --code-bg: #0b0f14;
  --link: #6cb6ff;
  --table-stripe: #151d2a;
  --radius: 8px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", "Cascadia Code", "Fira Code", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

.wrap { max-width: 920px; margin: 0 auto; padding: 0 1.25rem 3rem; }

header.site {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  margin-bottom: 2rem;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}
header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  padding-bottom: 0;
}
header.site .brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}
header.site .brand:hover { color: var(--accent); text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
nav a {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0.2rem 0;
}
nav a:hover, nav a.active { color: var(--accent); text-decoration: none; }
nav a.github {
  margin-left: auto;
  color: var(--ok);
}

h1 { font-size: 1.85rem; margin: 0 0 0.5rem; line-height: 1.25; }
h2 { font-size: 1.35rem; margin: 2rem 0 0.75rem; border-bottom: 1px solid var(--border); padding-bottom: 0.35rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; color: var(--accent); }
.lead { color: var(--muted); font-size: 1.05rem; margin: 0 0 1.5rem; }
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: #1e3a2f;
  color: var(--ok);
  border: 1px solid #2a5a45;
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
  margin-bottom: 0.75rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1rem 0 1.5rem;
}
th, td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  vertical-align: top;
}
th { background: var(--surface); color: var(--accent); font-weight: 600; }
tr:nth-child(even) td { background: var(--table-stripe); }
code, .mono {
  font-family: var(--mono);
  font-size: 0.88em;
}
td code, p code, li code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
}
pre code { background: none; border: none; padding: 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin: 1rem 0;
}
.card h3 { margin-top: 0; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}
.grid a.card {
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.grid a.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
}
.grid a.card h3 { color: var(--accent); }
.grid a.card p { color: var(--muted); margin: 0; font-size: 0.95rem; }

ul.clean { padding-left: 1.2rem; }
ul.clean li { margin: 0.35rem 0; }
.muted { color: var(--muted); }
.note {
  border-left: 3px solid var(--accent);
  padding: 0.6rem 1rem;
  margin: 1rem 0;
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--muted);
  font-size: 0.95rem;
}

footer.site {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}