:root {
  --bg: #F3F4F7;
  --card: #FFFFFF;
  --ink: #16213A;
  --muted: #56627A;
  --line: #DCE0E8;
  --navy: #111A2C;
  --navy-ink: #EEF1F6;
  --navy-muted: #AAB4C6;
  --gold: #F2B533;
  --accent: #F07A22;
  --f-display: "Big Shoulders Display", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Source Sans 3", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1524;
    --card: #141D30;
    --ink: #E8ECF3;
    --muted: #A1ACBE;
    --line: #28334B;
    --navy: #0A101C;
    --gold: #F5BE45;
  }
}
:root[data-theme="dark"] {
  --bg: #0E1524;
  --card: #141D30;
  --ink: #E8ECF3;
  --muted: #A1ACBE;
  --line: #28334B;
  --navy: #0A101C;
  --gold: #F5BE45;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
}
a { color: inherit; text-decoration-color: var(--gold); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

header.top { background: var(--navy); color: var(--navy-ink); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 18px; padding-bottom: 18px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.mark {
  width: 34px; height: 34px; border-radius: 8px; background: var(--gold); color: var(--navy);
  display: grid; place-items: center; font-family: var(--f-display); font-weight: 800; font-size: 18px; letter-spacing: 0.02em;
}
.brand-name { font-family: var(--f-display); font-weight: 800; font-size: 22px; text-transform: uppercase; letter-spacing: 0.02em; }
header.top nav { display: flex; gap: 18px; font-size: 15px; color: var(--navy-muted); }
header.top nav a { text-decoration: none; }
header.top nav a:hover { color: var(--navy-ink); }

.hero { background: var(--navy); color: var(--navy-ink); padding: 44px 0 56px; }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); margin: 0 0 12px; }
h1, h2 { font-family: var(--f-display); font-weight: 800; text-transform: uppercase; line-height: 0.98; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(40px, 8vw, 64px); }
.hero p.lead { font-size: 19px; color: var(--navy-muted); max-width: 640px; margin: 18px 0 0; }

main.wrap { padding-top: 40px; padding-bottom: 24px; }
section { margin: 0 0 40px; }
h2 { font-size: 30px; margin-bottom: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 18px 16px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.note { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--gold); border-radius: 10px; padding: 16px 18px; }
.note ul { margin: 8px 0 0; padding-left: 20px; }
.note li { margin: 4px 0; }
.muted { color: var(--muted); }

.doc h1 { font-size: clamp(34px, 6vw, 48px); }
.doc .updated { color: var(--muted); margin: 10px 0 28px; }
.doc h2 { font-size: 24px; margin: 30px 0 8px; }
.doc p, .doc li { max-width: 72ch; }
.doc ul { padding-left: 22px; }
.doc .callout { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--gold); border-radius: 10px; padding: 14px 16px; margin: 12px 0; }

footer { border-top: 1px solid var(--line); padding: 22px 0 36px; font-size: 15px; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
footer nav { display: flex; gap: 18px; }

@media (max-width: 560px) {
  header.top nav { gap: 14px; font-size: 14px; }
  .brand-name { font-size: 19px; }
}