:root {
  color: #16212b;
  background: #eef3f5;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  line-height: 1.65;
}

* { box-sizing: border-box; }
body { margin: 0; }

main {
  width: min(100% - 2rem, 48rem);
  margin: 0 auto;
  padding: clamp(2rem, 7vw, 5.5rem) 0;
}

header {
  padding-bottom: 2rem;
  border-bottom: 1px solid #cbd8de;
}

.eyebrow {
  margin: 0 0 0.6rem;
  color: #0d7468;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.6rem, 8vw, 4.8rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.updated { color: #617581; }
.summary { max-width: 38rem; font-size: 1.2rem; }

section {
  padding: 1.5rem 0;
  border-bottom: 1px solid #d9e2e6;
}

h2, h3 { line-height: 1.25; }
h2 { margin: 0 0 0.8rem; font-size: 1.35rem; }
h3 { margin: 1.4rem 0 0.5rem; font-size: 1.05rem; }
p { margin: 0.7rem 0; }
li + li { margin-top: 0.45rem; }
a { color: #086b61; text-underline-offset: 0.18em; }
a:focus-visible { outline: 3px solid #79e0d0; outline-offset: 3px; }

@media (prefers-color-scheme: dark) {
  :root { color: #e3edf2; background: #0b1821; }
  header { border-color: #29404d; }
  .eyebrow, a { color: #79e0d0; }
  .updated { color: #9bb0bc; }
  section { border-color: #203642; }
}