:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #59636e;
  --border: #d1d9e0;
  --accent: #8250df;
  --tint: #fbefff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #9198a1;
    --border: #3d444d;
    --accent: #ab7df8;
    --tint: #231b33;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, "Segoe UI", system-ui, sans-serif;
}
a { color: var(--accent); }
.top, main, .foot { max-width: 720px; margin: 0 auto; padding: 0 20px; }
.top { padding-top: 24px; }
.brand { color: var(--fg); font-weight: 700; text-decoration: none; }
.foot { padding-top: 48px; padding-bottom: 32px; color: var(--muted); font-size: 14px; }

.hero h1 { font-size: clamp(32px, 6vw, 48px); line-height: 1.15; margin: 64px 0 16px; }
.lede { font-size: 19px; color: var(--muted); margin: 0 0 40px; }
.demo {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; border: 1px solid var(--border); border-radius: 12px;
}
.demo-title { font-size: 18px; }
.demo-title span { color: var(--muted); }
.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 3px 10px 3px 8px;
  border: 1px solid var(--accent); border-radius: 999px; background: var(--tint);
  font-size: 13px; font-weight: 600; line-height: 20px;
}
.live { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.avatars { display: flex; }
.avatars span {
  width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--bg); margin-left: -7px;
  color: #fff; font-size: 9px; font-weight: 700; display: flex; align-items: center; justify-content: center; box-sizing: content-box;
}
.avatars span:first-child { margin-left: 0; }
.a1 { background: #bf3989; } .a2 { background: #0969da; } .a3 { background: #9a6700; }
.idle { opacity: .45; }
.points { padding-left: 20px; margin: 40px 0; }
.points li { margin-bottom: 10px; }
.cta { color: var(--muted); }

.doc h1 { margin: 48px 0 4px; }
.doc .meta { color: var(--muted); margin-top: 0; }
.doc h2 { margin-top: 36px; }
.doc h3 { font-size: 16px; margin-bottom: 4px; }
.doc li { margin-bottom: 6px; }