:root {
  color-scheme: light dark;
  --bg: #fafaf8;
  --fg: #171717;
  --muted: #5b5b57;
  --line: #deded9;
  --soft: #f0f0ec;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171717;
    --fg: #fafaf8;
    --muted: #b4b4af;
    --line: #3a3a37;
    --soft: #222221;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-wrap: break-word;
}

.skip {
  position: absolute;
  left: 1.25rem;
  top: -4rem;
  padding: 0.5rem 0.75rem;
  background: var(--fg);
  color: var(--bg);
}

.skip:focus {
  top: 0.5rem;
}

header,
main,
footer {
  max-width: 40rem;
  margin: 0 auto;
  padding-left: max(1.25rem, env(safe-area-inset-left));
  padding-right: max(1.25rem, env(safe-area-inset-right));
}

header {
  padding-top: 1.5rem;
}

.brand {
  font: 400 1.5rem/1.2 Georgia, "Times New Roman", serif;
  text-decoration: none;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.25rem;
  margin: 0.25rem 0 0;
  padding: 0;
  list-style: none;
}

nav a {
  display: inline-block;
  padding: 0.6rem 0;
}

nav a[aria-current="page"] {
  font-weight: 600;
  text-decoration: none;
}

main {
  padding-top: 1rem;
  padding-bottom: 2rem;
}

h1,
h2,
h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  line-height: 1.2;
}

h1 {
  margin: 1.5rem 0 0.5rem;
  font-size: clamp(1.9rem, 6vw, 2.5rem);
}

h2 {
  margin: 2.5rem 0 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 1.5rem;
}

h3 {
  margin: 1.5rem 0 0.25rem;
  font-size: 1.15rem;
  font-weight: 700;
}

p,
ul,
ol {
  margin: 0.75rem 0;
}

li {
  margin: 0.4rem 0;
}

a {
  color: inherit;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.meta {
  margin-top: 0;
  color: var(--muted);
}

.lead {
  font-size: 1.2rem;
}

.summary {
  margin: 1.5rem 0;
  padding: 0.25rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--soft);
}

.rules li {
  margin: 0.9rem 0;
  font-size: 1.15rem;
}

footer {
  padding-top: 1.5rem;
  padding-bottom: max(2rem, env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

footer p {
  margin: 0.5rem 0;
}