:root {
  color-scheme: light;
  --bg: #f7f8fc;
  --surface: #ffffff;
  --text: #172033;
  --muted: #526078;
  --border: #d9dfeb;
  --accent: #2347a6;
  --accent-soft: #e9efff;
  --warning: #fff4d6;
  --warning-border: #e2b94f;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); }
a:focus-visible {
  outline: 3px solid #f0a500;
  outline-offset: 3px;
  border-radius: 3px;
}

.site-header,
main,
.site-footer {
  width: min(100% - 2rem, 52rem);
  margin-inline: auto;
}

.site-header { padding: 2rem 0 1rem; }
.service-name { margin: 0; font-size: 1rem; color: var(--muted); }
h1 { margin: .25rem 0 .5rem; line-height: 1.25; font-size: clamp(1.8rem, 7vw, 2.5rem); }
h2 { margin-top: 2rem; line-height: 1.35; font-size: 1.3rem; }
h3 { margin-top: 1.5rem; font-size: 1.05rem; }
.updated { margin: 0; color: var(--muted); font-size: .95rem; }

nav { margin-top: 1.25rem; }
nav ul { display: flex; flex-wrap: wrap; gap: .5rem; padding: 0; margin: 0; list-style: none; }
nav a { display: inline-block; padding: .35rem .7rem; border-radius: .45rem; }
nav a[aria-current="page"] { background: var(--accent-soft); font-weight: 700; text-decoration: none; }

main {
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: .75rem;
}

.beta-notice {
  margin: 0 0 1.5rem;
  padding: 1rem;
  background: var(--warning);
  border: 1px solid var(--warning-border);
  border-radius: .5rem;
}
.fact-boundary { color: var(--muted); }
li + li { margin-top: .35rem; }
code { padding: .1rem .25rem; background: #eef1f6; border-radius: .25rem; }

.site-footer { padding: 1.5rem 0 3rem; color: var(--muted); font-size: .9rem; }

@media (min-width: 48rem) {
  .site-header,
  main,
  .site-footer { width: min(100% - 3rem, 52rem); }
  main { padding: 2.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}