:root {
  color-scheme: light;
  --navy: #112b46;
  --deep: #0c2137;
  --teal: #087578;
  --mint: #8be4dc;
  --ink: #23384b;
  --muted: #506477;
  --line: #d7e3e8;
  --paper: #ffffff;
  --background: #f2f6f8;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 1rem; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--background);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
}
a { color: var(--teal); text-underline-offset: 0.22em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 4px;
}
.container { width: min(100% - 3rem, 68rem); margin-inline: auto; }
.skip-link {
  position: absolute;
  top: -8rem;
  left: 1rem;
  z-index: 3;
  padding: 0.75rem 1rem;
  background: var(--paper);
  color: var(--navy);
}
.skip-link:focus { top: 1rem; }
.page-header {
  padding: 4rem 0 2.5rem;
  border-top: 6px solid var(--mint);
  background: var(--navy);
  color: var(--paper);
}
.eyebrow {
  margin: 0 0 1rem;
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.page-header .eyebrow { color: var(--mint); }
h1 {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 4.3rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}
.intro { max-width: 46rem; margin: 1.5rem 0 1rem; font-size: 1.15rem; }
.notice { max-width: 46rem; color: #c7d8e6; }
nav { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
nav a {
  padding: 0.7rem 1rem;
  border: 1px solid #617b91;
  border-radius: 0.4rem;
  color: var(--paper);
  text-decoration: none;
}
nav a:hover { background: #203f59; border-color: var(--mint); }
nav a:focus-visible { outline-color: var(--mint); }
main { padding-block: 2rem 1rem; }
section {
  margin-bottom: 1.5rem;
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--paper);
}
h2 {
  margin: 0 0 0.8rem;
  color: var(--navy);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  line-height: 1.25;
  letter-spacing: -0.025em;
}
h3 { margin: 0 0 0.6rem; color: var(--navy); font-size: 1.1rem; }
section > p { max-width: 52rem; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.cards article { padding-top: 1rem; border-top: 3px solid var(--teal); }
.cards p { margin: 0; color: var(--muted); }
.sample { margin-block: 1.5rem; border-top: 1px solid var(--line); }
.sample > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 1rem;
  padding-block: 0.8rem;
  border-bottom: 1px solid var(--line);
}
dt { color: var(--muted); }
dd { margin: 0; font-weight: 600; }
.steps, .checks { padding-left: 1.4rem; }
.steps li, .checks li { padding: 0.5rem 0 0.5rem 0.3rem; }
.note {
  margin-block: 1.5rem;
  padding: 1rem;
  border-left: 3px solid var(--teal);
  background: #edf8f6;
}
.page-footer { padding: 1.5rem 0 12rem; background: var(--deep); color: #c7d8e6; }
.page-footer p { margin: 0.3rem 0; }
.version {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 2;
  width: min(24rem, calc(100% - 2rem));
  max-height: 40vh;
  overflow: auto;
  padding: 0.8rem 1rem;
  border: 1px solid var(--mint);
  border-radius: 0.6rem;
  background: var(--deep);
  color: var(--paper);
  box-shadow: 0 4px 18px #0c213733;
  font-size: 0.85rem;
}
#version-status { margin: 0; font-weight: 700; }
summary { padding-block: 0.5rem; color: var(--mint); cursor: pointer; }
summary:focus-visible { outline-color: var(--mint); }
#version-full { display: block; padding-block: 0.3rem; overflow-wrap: anywhere; }

@media (max-width: 42rem) {
  .container { width: calc(100% - 2rem); }
  .page-header { padding-top: 2.5rem; }
  nav { flex-direction: column; }
  section { padding: 1.25rem; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .sample > div { grid-template-columns: minmax(0, 1fr); gap: 0.2rem; }
}

@media print {
  body { background: white; color: black; }
  .page-header, .page-footer, .version { background: white; color: black; }
  .page-header .eyebrow, .notice, .eyebrow, h2, h3 { color: black; }
  .container { width: 100%; }
  .page-header, .page-footer { padding: 1rem 0; }
  nav, .skip-link { display: none; }
  section { padding: 1rem; break-inside: avoid; }
  .version { position: static; width: 100%; max-height: none; box-shadow: none; border-color: black; }
}