:root {
  --bg: #F4F7F7;
  --ink: #0D1F24;
  --muted: #4A5E63;
  --link: #0B6E80;
  --rule: #D6E0E2;
  --brand: #0E4C5B;
  --brand-ink: #F4F7F7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B171B;
    --ink: #E4EEF0;
    --muted: #A5B8BC;
    --link: #6FD0E1;
    --rule: #1F3339;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

header.site-header {
  background: var(--brand);
  color: var(--brand-ink);
}

header.site-header .header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
}

header.site-header a {
  color: var(--brand-ink);
  text-decoration: none;
}

header.site-header .brand {
  font-weight: 600;
  font-size: 1.05rem;
}

header.site-header .brand:hover,
header.site-header .brand:focus {
  text-decoration: underline;
}

header.site-header nav {
  font-size: 0.95rem;
}

header.site-header nav a {
  opacity: 0.92;
}

header.site-header nav a:hover,
header.site-header nav a:focus {
  opacity: 1;
}

header.site-header nav .sep {
  margin: 0 8px;
  opacity: 0.6;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 20px 40px;
}

h1 {
  font-size: 1.7rem;
  margin: 0 0 0.6em;
}

h2 {
  font-size: 1.25rem;
  margin: 1.6em 0 0.5em;
  border-top: 1px solid var(--rule);
  padding-top: 1em;
}

h1:first-child,
h2:first-child {
  border-top: none;
  padding-top: 0;
}

p {
  margin: 0.8em 0;
}

ul,
ol {
  padding-left: 1.3em;
}

li {
  margin: 0.35em 0;
}

.muted {
  color: var(--muted);
}

.effective-date {
  color: var(--muted);
  font-style: italic;
  margin-top: -0.3em;
}

.card {
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 1.2em 0;
}

.card h2 {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.app-icon {
  border-radius: 22%;
  display: block;
}

.icon-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.status-line {
  display: inline-block;
  background: var(--rule);
  color: var(--ink);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.9rem;
  margin: 0.4em 0 1em;
}

footer.site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 20px 40px;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--rule);
}

.button-link {
  display: inline-block;
  background: var(--brand);
  color: var(--brand-ink);
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  margin-top: 0.4em;
}

.button-link:hover,
.button-link:focus {
  text-decoration: none;
  opacity: 0.92;
}

code {
  background: var(--rule);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  font-size: 0.92em;
}