:root {
  --bg0: #0b1221;
  --bg1: #0a1020;
  --paper: rgba(255, 255, 255, 0.06);
  --paper2: rgba(255, 255, 255, 0.04);
  --ink: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.66);
  --line: rgba(255, 255, 255, 0.12);
  --accent: #22c55e;
  --accent2: #38bdf8;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
    Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 520px at 14% 14%, rgba(34, 197, 94, 0.10), transparent 55%),
    radial-gradient(900px 520px at 86% 10%, rgba(56, 189, 248, 0.10), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  font-family: var(--sans);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 3px; }

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 18px 64px;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 18px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.brand h1 {
  margin: 0;
  font-size: 16px;
  letter-spacing: 0.2px;
  font-family: var(--mono);
}
.brand .tagline {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-family: var(--mono);
}

.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.nav a {
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
}
.nav a:hover {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none;
}

.hero {
  margin-top: 18px;
  padding: 22px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
}
.hero .kicker {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.7px;
  text-transform: uppercase;
}
.hero h2 {
  margin: 6px 0 10px;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -0.2px;
}
.hero p { margin: 0; color: var(--muted); max-width: 80ch; }

.layout {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}

.sidebar {
  padding: 14px 12px;
}
.sidebar h3 {
  margin: 0 0 10px;
  font-size: 12px;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.7px;
  text-transform: uppercase;
}
.toc {
  display: grid;
  gap: 6px;
}
.toc a {
  font-family: var(--mono);
  font-size: 13px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.02);
}
.toc a:hover {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none;
}

.main {
  padding: 18px 18px 22px;
}
.main h1 {
  margin: 0 0 10px;
  font-size: 26px;
  letter-spacing: -0.2px;
}
.meta {
  margin: 0 0 16px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}
.main p { margin: 0 0 14px; color: var(--muted); }
.main p strong { color: var(--ink); }

code, pre { font-family: var(--mono); }
code {
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  color: rgba(255, 255, 255, 0.92);
}
pre {
  overflow: auto;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 14px;
}

.callout {
  border-left: 3px solid rgba(34, 197, 94, 0.7);
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(34, 197, 94, 0.06);
  border: 1px solid rgba(34, 197, 94, 0.16);
  margin: 0 0 14px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent2);
}

.footer {
  margin-top: 18px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  text-align: center;
}

@media (min-width: 980px) {
  .layout { grid-template-columns: 320px 1fr; }
  .topbar { padding: 18px 22px 14px; }
  .hero { padding: 26px 22px; }
  .main { padding: 22px 22px 28px; }
  .sidebar { padding: 16px 14px; }
}