:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f9;
  --fg: #17171c;
  --muted: #5f5f6b;
  --faint: #8b8b96;
  --accent: #9328ff;
  --accent-ink: #6a12c0;
  --border: #e4e4ea;
  --border-strong: #d3d3dc;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container: 780px;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-ink); }

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

img { max-width: 100%; }

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .inner,
footer .inner,
main {
  max-width: var(--container);
  width: 100%;
  margin: 0 auto;
}

.site-header .inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px;
  height: 60px;
}

.mark {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--fg);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.2px;
}

.mark img { width: 26px; height: 26px; display: block; }

.site-header nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14.5px;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.site-header nav a:hover { color: var(--fg); }

.site-header nav a[aria-current="page"] {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

/* Main */

main {
  flex: 1;
  padding: 64px 24px 96px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--faint);
  margin: 0 0 12px;
}

h1 {
  font-size: 33px;
  line-height: 1.25;
  letter-spacing: -0.5px;
  font-weight: 600;
  margin: 0 0 12px;
}

.lede {
  font-size: 17.5px;
  color: var(--muted);
  margin: 0;
  max-width: 40em;
}

.hub .lede { margin-bottom: 48px; }

/* Document cards */

.cards {
  display: grid;
  gap: 12px;
  margin-bottom: 48px;
}

.card {
  display: flex;
  align-items: center;
  gap: 20px;
  text-decoration: none;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.card:hover {
  border-color: var(--border-strong);
  background: var(--bg-soft);
}

.card-title {
  display: block;
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: -0.1px;
  margin-bottom: 3px;
}

.card-desc {
  display: block;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--muted);
}

.card-meta {
  display: block;
  font-size: 12.5px;
  color: var(--faint);
  margin-top: 7px;
}

.card svg {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--faint);
  transition: color 0.15s ease, transform 0.15s ease;
}

.card:hover svg {
  color: var(--fg);
  transform: translateX(2px);
}

/* Contact panel */

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  padding: 24px 26px;
}

.panel h2 {
  font-size: 16.5px;
  font-weight: 600;
  margin: 0 0 6px;
}

.panel p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

.panel p + p { margin-top: 10px; }

/* Documents */

.doc-header { margin-bottom: 40px; }

.updated {
  color: var(--faint);
  font-size: 14px;
  margin: 0;
}

.doc h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.2px;
  margin: 48px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.doc h3 {
  font-size: 16.5px;
  font-weight: 600;
  margin: 30px 0 8px;
}

.doc p { margin: 0 0 14px; }
.doc ul, .doc ol { padding-left: 24px; margin: 0 0 18px; }
.doc li { margin-bottom: 9px; }
.doc strong { font-weight: 600; }

.toc {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
}

.toc p {
  margin: 0 0 14px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--faint);
}

.toc ol {
  margin: 0;
  padding-left: 20px;
  columns: 2;
  column-gap: 36px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--faint);
}

.toc li { margin-bottom: 9px; break-inside: avoid; }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--accent-ink); text-decoration: underline; }

.table-wrap {
  overflow-x: auto;
  margin: 0 0 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 520px;
  font-size: 14.5px;
  line-height: 1.55;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  background: var(--bg-soft);
  white-space: nowrap;
}

tr:last-child td { border-bottom: 0; }

.callout {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 32px 0;
  font-size: 15.5px;
}

.callout p:last-child { margin-bottom: 0; }

/* Footer */

footer {
  border-top: 1px solid var(--border);
  padding: 28px 24px 40px;
  color: var(--faint);
  font-size: 13.5px;
}

footer .inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
}

footer p { margin: 0; }
footer nav { margin-left: auto; display: flex; gap: 22px; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent-ink); }

@media (max-width: 640px) {
  body { font-size: 16px; }
  main { padding: 40px 20px 64px; }
  h1 { font-size: 27px; }
  .lede { font-size: 16.5px; }
  .hub .lede { margin-bottom: 36px; }
  .site-header .inner { padding: 0 16px; }
  .site-header nav { gap: 16px; font-size: 14px; }
  .toc ol { columns: 1; }
  footer nav { margin-left: 0; width: 100%; flex-wrap: wrap; }
}

@media (max-width: 380px) {
  .mark span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; }
}

@media print {
  .site-header, .toc, footer nav { display: none; }
  body { font-size: 11pt; color: #000; }
  .doc h2 { break-after: avoid; }
}