:root {
  --bg: #0d1117;
  --panel: #151b23;
  --panel-2: #1d2632;
  --text: #e6edf3;
  --muted: #9da7b3;
  --line: #30363d;
  --accent: #7dd3fc;
  --accent-2: #a7f3d0;
  --warn: #facc15;
  --danger: #fda4af;
  --max: 980px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.62 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
.skip-link {
  position: absolute; left: -9999px; top: 0;
}
.skip-link:focus {
  left: 1rem; top: 1rem; z-index: 999;
  background: white; color: black; padding: .6rem .8rem; border-radius: .4rem;
}
.layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  border-right: 1px solid var(--line); background: #0b0f14; padding: 1.35rem 1rem;
}
.brand { display: inline-block; font-weight: 800; font-size: 1.55rem; color: white; text-decoration: none; letter-spacing: -.03em; }
.brand span { color: var(--accent-2); }
.version { color: var(--muted); font-size: .82rem; margin: .15rem 0 1rem; }
nav[data-manual-nav] { display: grid; gap: .15rem; }
nav[data-manual-nav] a {
  color: #c7d0da; text-decoration: none; padding: .42rem .55rem; border-radius: .42rem; font-size: .93rem;
}
nav[data-manual-nav] a:hover, nav[data-manual-nav] a[aria-current="page"] {
  background: var(--panel-2); color: white;
}
.repo-link { margin-top: 1.2rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .9rem; }
main { width: min(var(--max), calc(100% - 3rem)); margin: 0 auto; padding: 2.2rem 0 4rem; }
.breadcrumbs { color: var(--muted); font-size: .82rem; margin-bottom: .7rem; }
.eyebrow { color: var(--accent-2); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1 { font-size: clamp(2rem, 4vw, 3.15rem); line-height: 1.08; letter-spacing: -.035em; margin: .3rem 0 1.2rem; }
h2 { margin-top: 2.2rem; line-height: 1.2; letter-spacing: -.02em; }
h3 { margin-top: 1.6rem; }
p, li { max-width: 78ch; }
.hero {
  width: 100%; display: block; border: 1px solid var(--line); border-radius: .8rem; background: var(--panel);
}
.landing-tagline { margin: -.55rem 0 .8rem; color: var(--accent); font-size: clamp(1.25rem, 2.4vw, 1.7rem); font-weight: 750; letter-spacing: -.02em; }
.lede { font-size: 1.15rem; color: #d5dde5; }
.cta-row, .link-row { display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; margin: 1.2rem 0; }
.button { display: inline-block; padding: .58rem .82rem; border: 1px solid var(--accent); border-radius: .45rem; background: var(--accent); color: #071018; font-weight: 750; text-decoration: none; }
.button:hover { background: #b7e8fb; color: #071018; text-decoration: none; }
.button.secondary { background: transparent; color: var(--accent); }
.button.secondary:hover { background: var(--panel-2); color: white; }
.landing-section { margin: 2.8rem 0; }
.flow { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin: 1.2rem 0; padding: 1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--panel); color: #d5dde5; }
.flow span { padding: .28rem .5rem; border-radius: .35rem; background: var(--panel-2); }
.flow b { color: var(--accent-2); }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; margin: 1.3rem 0; }
.card { padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--panel); }
.card h3 { margin: 0 0 .35rem; }
.callout { border-left: 4px solid var(--accent); background: var(--panel); padding: .9rem 1rem; margin: 1.2rem 0; border-radius: .2rem .55rem .55rem .2rem; }
.callout.warn { border-left-color: var(--warn); }
.callout.danger { border-left-color: var(--danger); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
pre { overflow-x: auto; background: #080b0f; border: 1px solid var(--line); border-radius: .6rem; padding: 1rem; }
table { border-collapse: collapse; width: 100%; overflow-x: auto; display: block; }
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: .65rem .7rem; vertical-align: top; }
th { color: white; }
.kicker { font-weight: 700; color: white; }
footer { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 1.4rem; color: var(--muted); font-size: .9rem; }
@media (max-width: 860px) {
  .layout { display: block; }
  .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  nav[data-manual-nav] { grid-template-columns: repeat(2, minmax(0,1fr)); }
  main { width: min(var(--max), calc(100% - 2rem)); padding-top: 1.4rem; }
}
@media (max-width: 560px) {
  nav[data-manual-nav] { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .flow { align-items: flex-start; flex-direction: column; }
  .flow b { transform: rotate(90deg); }
  main { width: min(var(--max), calc(100% - 1.4rem)); }
}