body {
  --bg: hsl(var(--hue) 30% 98%);
  --bg2: hsl(calc(var(--hue) + 40) 60% 94%);
  --fg: hsl(var(--hue) 25% 12%);
  --muted: hsl(var(--hue) 10% 40%);
  --accent: hsl(var(--hue) 70% 42%);
  --line: hsl(var(--hue) 20% 85%);
}
:root { color-scheme: light dark; }
@media (prefers-color-scheme: dark) {
  body {
    --bg: hsl(var(--hue) 25% 8%);
    --bg2: hsl(calc(var(--hue) + 40) 35% 13%);
    --fg: hsl(var(--hue) 20% 94%);
    --muted: hsl(var(--hue) 10% 66%);
    --accent: hsl(var(--hue) 80% 66%);
    --line: hsl(var(--hue) 15% 22%);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: radial-gradient(120% 80% at 100% 0%, var(--bg2), var(--bg) 60%) no-repeat, var(--bg);
  color: var(--fg);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-family: var(--font, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif);
  -webkit-font-smoothing: antialiased;
}
.wrap { width: min(100% - 3rem, 44rem); margin-inline: auto; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1.75rem; }
.mark { color: var(--fg); font-weight: 650; letter-spacing: -0.01em; text-decoration: none; }
.pill {
  font-size: 0.8125rem; font-weight: 600; color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  padding: 0.2rem 0.7rem; border-radius: 999px;
}
.hero { align-self: center; padding-block: 3rem; }
h1 { margin: 0 0 1rem; font-size: clamp(2rem, 5vw + 0.5rem, 3.5rem); line-height: 1.1; letter-spacing: -0.03em; text-wrap: balance; }
.tagline { margin: -0.25rem 0 1.25rem; color: var(--accent); font-weight: 600; }
p { margin: 0 0 1rem; max-width: 60ch; color: var(--muted); text-wrap: pretty; }
ul { margin: 0 0 1.25rem; padding-left: 1.2rem; max-width: 60ch; color: var(--muted); }
li { margin-bottom: 0.35rem; }
li::marker { color: var(--accent); }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1.25rem; margin: 1.5rem 0; max-width: 60ch; }
dt { color: var(--fg); font-weight: 600; }
dd { margin: 0; color: var(--muted); }
.links { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.5rem; }
.btn {
  display: inline-block; padding: 0.55rem 1rem; border-radius: 0.6rem; text-decoration: none; font-weight: 600; font-size: 0.95rem;
  color: var(--fg); border: 1px solid var(--line); background: color-mix(in srgb, var(--fg) 4%, transparent);
}
.btn:first-child { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.btn:hover { border-color: var(--accent); }
.foot { padding-block: 1.75rem; color: var(--muted); font-size: 0.875rem; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* optional per-site themes: colours come in as inline custom properties on <body> */
body.themed { --bg2: var(--bg); --line: color-mix(in srgb, var(--fg) 18%, transparent); }
body.nohead { grid-template-rows: 1fr auto; }
body.plain { grid-template-rows: 1fr; }
.logo { display: block; max-width: 100%; height: auto; margin: 0 0 1.5rem; }
.center { text-align: center; }
.center .logo, .center p, .center ul { margin-inline: auto; }
.center .logo { margin-bottom: 1.5rem; }
.center .links, .center .pill { justify-content: center; }
.pill.inline { display: inline-block; margin-bottom: 1rem; }
.textlink { color: var(--muted); text-decoration: underline; text-underline-offset: 0.2em; }
.textlink:hover { color: var(--fg); }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
body.centered .foot { text-align: center; }