:root {
  --bg: #fafafa;
  --fg: #0b0b0b;
  --muted: rgba(0,0,0,0.6);
  --card-bg: #ffffff;
  --card-bd: rgba(0,0,0,0.12);
  --pill-bg: rgba(0,0,0,0.05);
  --separator: rgba(0,0,0,0.12);
  --radius: 16px;
}
[data-theme="dark"] {
  --bg: #0b0b0b;
  --fg: #f5f5f5;
  --muted: rgba(255,255,255,0.6);
  --card-bg: rgba(255,255,255,0.04);
  --card-bd: rgba(255,255,255,0.12);
  --pill-bg: rgba(255,255,255,0.06);
  --separator: rgba(255,255,255,0.12);
}
html, body { height: 100%; }
body {
  margin: 0; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg); color: var(--fg);
}
.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header.sticky {
  position: sticky; top: 0; z-index: 40; backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--card-bd);
}
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 8px; }
.brand .sep { color: var(--muted); margin: 0 8px; }
.btn { display:inline-flex; align-items:center; gap:8px; border:1px solid var(--card-bd); padding:8px 14px; border-radius: 999px; font-size: 14px; background: transparent; color: var(--fg); cursor: pointer; text-decoration: none; }
.btn.solid { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn:hover { filter: brightness(0.95); }
.tag { display:inline-block; padding:6px 10px; border-radius: 999px; font-size:12px; border:1px solid var(--card-bd); background: var(--pill-bg); margin:4px 6px 0 0; }
.card { background: var(--card-bg); border:1px solid var(--card-bd); border-radius: var(--radius); box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.card .card-header { padding:20px 20px 8px 20px; }
.card .card-title { font-size: 16px; font-weight: 600; margin:0; }
.card .card-content { padding:0 20px 20px 20px; font-size: 14px; }
.section { scroll-margin-top: 96px; }
.section h2 { display:flex; align-items:center; gap:8px; font-size:20px; font-weight:600; margin:0 0 12px 0; }
.muted { color: var(--muted); }
.grid { display:grid; gap: 24px; }
@media (min-width: 880px) { .grid.cols-2 { grid-template-columns: repeat(2, minmax(0,1fr)); } .grid.cols-3 { grid-template-columns: 2fr 1fr; } }
hr.sep { border:0; border-top:1px solid var(--separator); margin:32px 0; }
main { padding: 32px 0 0 0; }
footer { padding: 40px 0; font-size: 12px; text-align:center; color: var(--muted); }
a.inline { color: inherit; text-underline-offset: 3px; }
ul.tight { margin: 8px 0 0 18px; }
ul.tight li { margin: 6px 0; }
.controls { display:flex; align-items:center; gap:8px; }
.dot { width:6px; height:6px; border-radius:50%; background: currentColor; opacity: .6; }