@import url("https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=EB+Garamond:ital,wght@0,400;0,500;1,400&family=Cormorant+SC:wght@400;600&display=swap");
:root {
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --navy: #1e2e45;
  --navy-deep: #131e2e;
  --navy-mid: #2e4460;
  --blue: #2e4460;
  --gold: #b5923a;
  --gold-light: #d4ad5c;
  --pale: #ede9e2;
  --line: #c8c0b0;
  --line-light: #e0dbd2;
  --paper: #ffffff;
  --warm: #f8f5f0;
  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "EB Garamond", Georgia, serif;
  --font-caps: "Cormorant SC", Georgia, serif;
  --max: 68.75rem;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--warm); font: 18px/1.75 var(--font-body); -webkit-font-smoothing: antialiased; }
a { color: var(--blue); text-underline-offset: .16em; }
a:hover { color: var(--gold); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid #f0b429; outline-offset: 3px; }
.skip { position: absolute; left: -999px; top: .5rem; z-index: 100; padding: .7rem 1rem; background: #fff; }
.skip:focus { left: .5rem; }
.utility { background: var(--navy); color: #fff; border-bottom: 1px solid rgba(255,255,255,.08); font: 400 .7rem/1.2 var(--font-caps); letter-spacing: .08em; }
.utility .inner { display: flex; justify-content: flex-end; gap: 1.2rem; padding: .55rem 1.25rem; }
.utility a { color: #fff; text-decoration: none; }
.site-header { border-bottom: 2px solid var(--gold); background: var(--navy-deep); position: sticky; top: 0; z-index: 50; box-shadow: 0 2px 12px rgba(0,0,0,.25); }
.header-inner { max-width: var(--max); margin: auto; min-height: 5rem; padding: 0 1.25rem; display: flex; align-items: center; gap: 1.4rem; }
.brand { margin-right: auto; color: #fff; text-decoration: none; font: 600 1.05rem/1.05 var(--font-caps); letter-spacing: .06em; }
.brand:hover { color: #fff; }
.brand small { display: block; margin-top: .3rem; color: var(--gold-light); font: 400 .62rem/1 var(--font-body); letter-spacing: .12em; text-transform: uppercase; }
.nav-toggle { display: none; border: 1px solid rgba(255,255,255,.35); background: transparent; color: #fff; padding: .6rem .8rem; font: 600 .78rem/1 var(--font-caps); letter-spacing: .08em; }
.primary-nav ul { display: flex; list-style: none; gap: 1.1rem; margin: 0; padding: 0; align-items: center; }
.primary-nav a { color: rgba(255,255,255,.78); text-decoration: none; border-bottom: 2px solid transparent; padding: .55rem .15rem; font: 400 .78rem/1.2 var(--font-caps); letter-spacing: .07em; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: #fff; border-bottom-color: var(--gold); }
.start-link { padding: .7rem .9rem !important; color: var(--navy-deep) !important; background: var(--gold-light); border: 0 !important; }
.breadcrumbs { max-width: var(--max); margin: auto; padding: 1rem 1.25rem 0; color: var(--muted); font: .72rem/1.4 var(--font-caps); letter-spacing: .05em; }
.breadcrumbs a { color: inherit; }
main { min-height: 65vh; }
.wrap { max-width: var(--max); margin: auto; padding: 0 1.25rem; }
.hero { padding: clamp(4.5rem, 9vw, 7rem) 0 4.5rem; background: #fff; border-bottom: 1px solid var(--line-light); }
.hero .eyebrow, .eyebrow { color: var(--gold); font: 400 .74rem/1.2 var(--font-caps); letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { color: var(--navy); font-family: var(--font-display); line-height: 1.25; letter-spacing: 0; }
h1 { max-width: 18ch; margin: .65rem 0 1.35rem; font-size: clamp(2.6rem, 6vw, 4.6rem); font-weight: 700; }
.page-hero h1 { font-size: clamp(2.2rem, 5vw, 3.7rem); }
h2 { margin: 2.8rem 0 .8rem; font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 600; }
h3 { margin: 1.8rem 0 .55rem; font-size: 1.25rem; font-weight: 600; }
.lede { max-width: 51rem; font-size: clamp(1.15rem, 2vw, 1.35rem); line-height: 1.72; color: #333; }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.7rem; }
.button { display: inline-block; padding: .78rem 1.05rem; background: var(--navy); color: #fff; text-decoration: none; font: 600 .78rem/1.2 var(--font-caps); letter-spacing: .08em; border: 1px solid var(--navy); }
.button:hover { background: var(--navy-mid); color: #fff; border-color: var(--gold); }
.button.secondary { color: var(--navy); background: transparent; border-color: var(--navy); }
.section { padding: 3.5rem 0; }
.section.tinted { background: var(--pale); }
.narrow { max-width: 50rem; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.1rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { border: 1px solid var(--line-light); border-top: 3px solid var(--gold); padding: 1.35rem; background: #fff; box-shadow: 0 2px 12px rgba(30,46,69,.06); }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.stack { list-style: none; padding: 0; counter-reset: stack; max-width: 55rem; }
.stack li { counter-increment: stack; padding: 1.1rem 0 1.1rem 4.5rem; border-bottom: 1px solid var(--line); position: relative; }
.stack li:before { content: counter(stack, decimal-leading-zero); position: absolute; left: 0; color: var(--gold); font: 600 1.45rem/1 var(--font-display); }
.equation { margin: 1.7rem 0; font: 600 clamp(1.5rem, 4vw, 2.6rem)/1.2 var(--font-display); color: var(--navy); letter-spacing: .04em; }
.page-hero { padding: 4rem 0 2.8rem; background: #fff; border-bottom: 1px solid var(--line-light); }
.content-layout { display: grid; grid-template-columns: 14rem minmax(0, 1fr); gap: 3rem; padding-top: 2.5rem; padding-bottom: 4rem; }
.local-nav { font: .82rem/1.4 var(--font-caps); letter-spacing: .035em; }
.local-nav strong { display: block; margin-bottom: .7rem; text-transform: uppercase; letter-spacing: .12em; font-size: .68rem; color: var(--gold); }
.local-nav ul { list-style: none; padding: 0; margin: 0; }
.local-nav li { border-top: 1px solid var(--line); }
.local-nav a { display: block; padding: .65rem 0; color: var(--ink); text-decoration: none; }
.prose { max-width: 52rem; }
.prose > :first-child { margin-top: 0; }
.principle { padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.principle b { display: block; font: 600 1.15rem/1.3 var(--font-display); color: var(--navy); }
.status { display: inline-block; padding: .28rem .5rem; background: var(--pale); color: var(--navy); border: 1px solid var(--line); font: 600 .65rem/1 var(--font-caps); letter-spacing: .09em; text-transform: uppercase; }
.status.historical, .status.superseded { color: #675424; background: #fbf3d6; border-color: #e3d18c; }
.status.control { color: #4a365f; background: #f1eaf8; border-color: #cab9dc; }
.doc-list { display: grid; gap: .8rem; }
.doc { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.doc h3 { margin: .4rem 0 .35rem; }
.doc-meta { color: var(--muted); font: .76rem/1.5 var(--font-caps); letter-spacing: .025em; }
.filters { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.2rem 0 2rem; }
.filters input, .filters select { min-height: 2.8rem; padding: .6rem; border: 1px solid var(--line); background: #fff; font: 1rem var(--font-body); }
.filters input { flex: 1 1 18rem; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font: .88rem/1.5 var(--font-body); }
th, td { padding: .75rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--navy); color: #fff; font-family: var(--font-caps); letter-spacing: .05em; }
blockquote { margin: 1.6rem 0; padding: 1rem 1.25rem; border-left: 4px solid var(--gold); background: #fff; font-size: 1.15rem; }
.architecture-figure { margin: 2rem 0; }
.architecture-figure img { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: #fff; }
.architecture-figure figcaption { margin-top: .65rem; color: var(--muted); font: .76rem/1.5 var(--font-caps); letter-spacing: .025em; }
.site-footer { background: var(--navy-deep); color: #fff; border-top: 3px solid var(--gold); padding: 3rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 2rem; }
.site-footer a { color: #fff; }
.site-footer ul { list-style: none; padding: 0; }
.site-footer li { margin: .45rem 0; }
.site-footer h2 { color: #fff; margin: 0 0 .8rem; font: 600 1rem/1.25 var(--font-display); }
.fine { color: #c6d2dc; font: .72rem/1.5 var(--font-caps); letter-spacing: .03em; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .primary-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--navy-deep); border-bottom: 2px solid var(--gold); padding: 1rem; }
  .primary-nav.open { display: block; }
  .primary-nav ul { display: block; max-width: var(--max); margin: auto; }
  .primary-nav a { display: block; padding: .7rem; }
  .content-layout { grid-template-columns: 1fr; }
  .local-nav { border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  body { font-size: 17px; }
  .utility .inner { justify-content: flex-start; overflow-x: auto; }
  .grid, .grid.two, .footer-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 3.2rem; }
  h1 { font-size: 2.65rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }