:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f3;
  --color-text: #1c1c1a;
  --color-text-muted: #55554f;
  --color-link: #1a5f3f;
  --color-link-hover: #123f2a;
  --color-border: #e0e0da;
  --color-focus: #1a5f3f;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #16171a;
    --color-bg-alt: #1e1f23;
    --color-text: #e8e8e4;
    --color-text-muted: #a7a79f;
    --color-link: #6fd19f;
    --color-link-hover: #93e0ba;
    --color-border: #33342f;
    --color-focus: #6fd19f;
  }
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-bg);
  color: var(--color-text);
  padding: 0.75rem 1rem;
  z-index: 100;
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

a {
  color: var(--color-link);
}

a:hover {
  color: var(--color-link-hover);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 2px;
}

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 0;
}

header.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-name {
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--color-text);
}

.site-name:hover {
  color: var(--color-link);
}

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

nav.site-nav a {
  text-decoration: none;
}

nav.site-nav a:hover {
  text-decoration: underline;
}

main {
  padding: 2.5rem 0 3rem;
}

main .wrap > *:first-child {
  margin-top: 0;
}

h1 {
  font-size: 1.9rem;
  line-height: 1.3;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.3rem;
  line-height: 1.35;
  margin: 2.25rem 0 0.75rem;
}

h3 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

ul,
ol {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
}

li {
  margin-bottom: 0.4rem;
}

strong {
  font-weight: 700;
}

.lede {
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

.callout {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.effective-date {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--color-bg-alt);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.92em;
}

footer.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0 2rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

footer.site-footer nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0 0 0.75rem;
  padding: 0;
}

footer.site-footer nav a {
  text-decoration: none;
}

footer.site-footer nav a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.6rem;
  }

  header.site-header .wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}