/* GRRC design register (D266-5): austere, system-ui, near-monochrome + one accent
   (seal green), WCAG 2.2 AA, meaning = color + icon + word, no client JS. */

:root {
  --paper: #fcfcfa;
  --ink: #191c1a;
  --ink-2: #4f5752;
  --rule: #dfe3dd;
  --seal: #0f5c43;
  --seal-deep: #0b4a36;
  --mono-bg: #f2f4f0;
  --mono: ui-monospace, "Cascadia Code", Consolas, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

/* ---- chrome ---- */

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--seal);
  color: #fff;
  padding: 0.5rem 1rem;
}
.skip:focus { left: 0; z-index: 10; }

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 2rem;
  max-width: 46rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 0;
}

.wordmark {
  font-weight: 750;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark:hover { color: var(--seal); }

.site-header nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-header nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.92rem;
}
.site-header nav a:hover { color: var(--seal); text-decoration: underline; }
.site-header nav a .ext { font-size: 0.85em; }
.site-header nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--seal);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.35em;
}

main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.site-footer {
  border-top: 1px solid var(--rule);
  max-width: 46rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.site-footer p { margin: 0.4rem 0; }

/* ---- type ---- */

h1, h2, h3, h4 {
  line-height: 1.25;
  letter-spacing: -0.012em;
  margin: 2.2em 0 0.5em;
}
h1 { font-size: 1.9rem; font-weight: 700; margin-top: 0.6em; }
h2 { font-size: 1.3rem; font-weight: 650; }
h3 { font-size: 1.08rem; font-weight: 650; }
h4 { font-size: 1rem; font-weight: 600; }

a { color: var(--seal); text-decoration: underline; text-underline-offset: 0.15em; }
a:hover { color: var(--seal-deep); }

:focus-visible {
  outline: 2px solid var(--seal);
  outline-offset: 2px;
  border-radius: 1px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 0 0 0.4rem;
}

hr, .rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2rem 0;
}

/* ---- vendored document rendering ---- */

code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--mono-bg);
  padding: 0.08em 0.3em;
  border-radius: 3px;
}

pre {
  background: var(--mono-bg);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  line-height: 1.5;
}
pre code { background: none; padding: 0; font-size: 0.82rem; }

blockquote {
  margin: 1.2rem 0;
  padding: 0.1rem 0 0.1rem 1.1rem;
  border-left: 3px solid var(--rule);
  color: var(--ink-2);
}

.table-wrap { overflow-x: auto; margin: 1.2rem 0; }
table { border-collapse: collapse; font-size: 0.92rem; min-width: 100%; }
th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.45rem 0.9rem 0.45rem 0;
  border-bottom: 1px solid var(--rule);
}
th { font-weight: 650; }

/* ---- integrity strip (the signature element) ---- */

.integrity {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--seal-deep);
  background: none;
  margin: 0.6rem 0;
  overflow-wrap: anywhere;
}
.integrity code, .iv1 figcaption code { background: none; padding: 0; font-size: 1em; }
.integrity .digest, .iv1 .digest { color: var(--ink-2); }
.integrity-word { font-weight: 650; letter-spacing: 0.04em; }
.seal-icon { margin-right: 0.4rem; vertical-align: -0.08em; color: var(--seal); }

/* ---- the (iv-1) span, set off ---- */

.iv1 {
  margin: 2rem 0;
  border-top: 3px double var(--seal);
  border-bottom: 3px double var(--seal);
  padding: 1.1rem 0 0.9rem;
}
.iv1 blockquote {
  border: 0;
  margin: 0;
  padding: 0 0.25rem;
  color: var(--ink);
  font-size: 1.02rem;
}
.iv1 figcaption {
  margin-top: 0.9rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--seal-deep);
  overflow-wrap: anywhere;
}

/* ---- page chrome for document pages ---- */

.doc-provenance { margin-bottom: 1.6rem; padding-bottom: 1.2rem; border-bottom: 1px solid var(--rule); }
.doc-provenance .eyebrow { margin-bottom: 0.2rem; }

.page-note {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--seal);
  padding: 0.7rem 1rem;
  margin: 0 0 1.8rem;
  font-size: 0.92rem;
  color: var(--ink-2);
}
.page-note em { font-style: normal; }
.page-note .note-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--seal-deep);
  margin-bottom: 0.25rem;
}

.frame { margin: 0 0 1.8rem; }
.frame p { margin: 0.5rem 0; }

/* ---- home ---- */

.hero { padding: 1.5rem 0 0.5rem; }
.hero h1 { font-size: 2.2rem; letter-spacing: -0.018em; margin: 0.3em 0 0.4em; }
.hero .lead { font-size: 1.14rem; max-width: 40rem; }
.hero .cta { font-weight: 600; }
.hero .disclosure { color: var(--ink-2); font-size: 0.95rem; max-width: 40rem; }

.record-list { list-style: none; margin: 1rem 0 0; padding: 0; }
.record-list li { padding: 1.1rem 0; border-top: 1px solid var(--rule); }
.record-list a { font-weight: 650; font-size: 1.05rem; }
.record-list p { margin: 0.3rem 0; }
.record-list .about { color: var(--ink-2); font-size: 0.95rem; }

/* ---- S267 WS2: footer links, registry entry, draft banner ---- */

.footer-links a { color: var(--ink-2); }
.footer-links a:hover { color: var(--seal); }

.registry-entry dl { margin: 1.2rem 0; }
.registry-entry dt { font-weight: 650; margin-top: 0.8rem; }
.registry-entry dd { margin: 0.15rem 0 0; overflow-wrap: anywhere; }

.draft-banner {
  border: 2px solid var(--ink);
  padding: 0.8rem 1rem;
  margin: 0 0 1.8rem;
}
.draft-banner p { margin: 0.25rem 0 0; font-size: 0.95rem; }
.draft-banner .note-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

/* ---- print ---- */

@media print {
  .site-header nav, .skip { display: none; }
  body { background: #fff; color: #000; }
  main { max-width: none; padding: 0; }
}