:root {
  --ink: #1b1f24;
  --muted: #5b6470;
  --line: #d9dee5;
  --brand: #2f79eb;
  --brand-dark: #1f5fc4;
  --bg: #ffffff;
  --bg-soft: #f4f6f9;
  --max: 960px;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.55; }
a { color: var(--brand-dark); }
a:focus-visible, .button:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
code { background: var(--bg-soft); padding: 0 .3em; border-radius: 3px; }

.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  max-width: var(--max); margin: 0 auto; padding: 1rem 16px; border-bottom: 1px solid var(--line);
}
.site-header nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.site-header nav a { text-decoration: none; color: var(--ink); font-weight: 600; }
.site-header nav a[aria-current="page"] { color: var(--brand-dark); }
.brand img { display: block; }

main { max-width: var(--max); margin: 0 auto; padding: 1rem 16px 3rem; }
section { margin: 2.5rem 0; }
h1 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); line-height: 1.2; margin: .25rem 0 .75rem; }
h2 { font-size: 1.35rem; margin: 0 0 .75rem; padding-bottom: .35rem; border-bottom: 1px solid var(--line); }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; color: var(--muted); margin: 0; }
.acronym { color: var(--muted); font-weight: 400; }
.lede { font-size: 1.1rem; color: #2e3640; }
.button {
  display: inline-block; background: var(--brand); color: #fff; text-decoration: none; font-weight: 600;
  padding: .7rem 1.2rem; border-radius: 6px;
}
.button:hover { background: var(--brand-dark); }

.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: .75rem 2rem; margin: 1rem 0 0; }
.facts div { background: var(--bg-soft); border-radius: 6px; padding: .6rem .9rem; }
.facts dt { font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.facts dd { margin: .15rem 0 0; font-weight: 600; overflow-wrap: anywhere; }

table { width: 100%; border-collapse: collapse; margin-top: .5rem; }
th, td { text-align: left; vertical-align: top; padding: .55rem .6rem; border-bottom: 1px solid var(--line); }
th { font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; padding: 0; margin: .5rem 0 0; list-style: none; }
.cards li { border: 1px solid var(--line); border-radius: 8px; padding: 1rem; }
.cards h3 { margin: 0 0 .4rem; font-size: 1.05rem; }
.cards .tags { color: var(--muted); font-size: .85rem; margin: 0 0 .5rem; }
.cards p { margin: .35rem 0; }

.steps li { margin: .6rem 0; }
.banner { background: #fff4d6; border: 1px solid #e3c477; border-radius: 6px; padding: .6rem .9rem; margin: 1rem 0 0; }
.note { display: block; color: var(--muted); font-size: .95rem; margin-top: .25rem; }

.site-footer { max-width: var(--max); margin: 0 auto; padding: 1.5rem 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }

@media (max-width: 600px) {
  .site-header { flex-direction: column; align-items: flex-start; }
}