/* Verso — the guides: a three-column documentation layout, the article itself,
   and the utility and legal pages that borrow its prose styles. */

.docs {
  --sidebar-w: 272px;
  --toc-w: 244px;
  --gutter: 48px;
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  gap: 0 var(--gutter);
  align-items: start;
  width: 100%;
  max-width: 1480px;
  margin-inline: auto;
  padding: 0 26px 96px;
}
@media (max-width: 1240px) {
  .docs { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); --toc-w: 0px; }
  .docs .toc { display: none; }
}
@media (max-width: 940px) {
  .docs { grid-template-columns: minmax(0, 1fr); gap: 0; padding-inline: 20px; }
}

/* ---------------------------------------------------------- breadcrumbs -- */

.crumbs {
  max-width: 1480px;
  margin-inline: auto;
  padding: calc(var(--nav-h) + 42px) 26px 0;
  font-size: 13px;
  color: var(--ink-4);
}
.crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--ink-4); opacity: 0.6; }
.crumbs a { color: var(--ink-3); }
.crumbs a:hover { color: var(--ink); }
.crumbs [aria-current] { color: var(--ink-2); }
@media (max-width: 940px) {
  .crumbs { padding-top: calc(var(--nav-h) + 28px); padding-inline: 20px; }
}

/* -------------------------------------------------------------- sidebar -- */

.docs-side {
  position: sticky;
  top: calc(var(--nav-h) + 26px);
  align-self: start;
  max-height: calc(100vh - var(--nav-h) - 48px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 6px 10px 40px 0;
  font-size: 14.5px;
  scrollbar-width: thin;
  scrollbar-color: var(--fill-3) transparent;
}
.docs-side::-webkit-scrollbar { width: 8px; }
.docs-side::-webkit-scrollbar-thumb { background: var(--fill-3); border-radius: 8px; }
.docs-side::-webkit-scrollbar-track { background: transparent; }

.docs-group { border: 0; }
.docs-group > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: var(--r-8);
  font-size: 13.5px;
  font-weight: 640;
  letter-spacing: 0.005em;
  color: var(--ink-3);
  cursor: pointer;
  list-style: none;
}
.docs-group > summary::-webkit-details-marker { display: none; }
.docs-group > summary::before {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.2s var(--smooth);
  flex: none;
}
.docs-group[open] > summary::before { transform: rotate(45deg); }
.docs-group > summary:hover { color: var(--ink); background: var(--fill-1); }

.docs-side ul { list-style: none; margin: 0 0 10px; padding: 0 0 0 8px; }
.docs-side li { margin: 0; }
.docs-side ul a {
  display: block;
  padding: 7px 10px;
  border-radius: var(--r-6);
  color: var(--ink-2);
  line-height: 1.4;
  transition: color 0.16s, background 0.16s;
}
.docs-side ul a:hover { color: var(--ink); background: var(--fill-1); text-decoration: none; }
.docs-side ul a[aria-current="page"] {
  color: var(--accent-ink);
  background: var(--accent-soft);
  font-weight: 600;
}

.docs-nav-toggle { display: none; }
.docs-scrim { display: none; }
@media (max-width: 940px) {
  .docs-nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 18px 0 4px;
    padding: 9px 14px;
    border-radius: 980px;
    background: var(--fill-2);
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
  }
  .docs-nav-toggle svg { width: 15px; height: 15px; }
  .docs-side {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 80;
    width: min(320px, 86vw);
    max-height: none;
    padding: 84px 16px 32px;
    background: var(--bg);
    border-right: 1px solid var(--hairline);
    transform: translateX(-102%);
    transition: transform 0.28s var(--snappy);
  }
  .docs-side.open { transform: none; }
  .docs-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 70;
    background: rgba(6, 12, 28, 0.46);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.28s var(--smooth);
  }
  .docs-scrim.open { opacity: 1; pointer-events: auto; }
}

/* ------------------------------------------------------------------ toc -- */

.toc {
  position: sticky;
  top: calc(var(--nav-h) + 26px);
  align-self: start;
  max-height: calc(100vh - var(--nav-h) - 48px);
  overflow-y: auto;
  padding: 6px 0 40px;
  font-size: 13.5px;
}
.toc h2 {
  font-size: 12.5px;
  font-weight: 640;
  letter-spacing: 0.005em;
  color: var(--ink-4);
  margin-bottom: 10px;
  padding-left: 15px;
}
.toc ul { list-style: none; border-left: 1px solid var(--hairline); }
.toc a {
  display: block;
  padding: 6px 0 6px 15px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--ink-4);
  line-height: 1.4;
  transition: color 0.16s, border-color 0.16s;
}
.toc a:hover { color: var(--ink-2); text-decoration: none; }
.toc a.active { color: var(--accent-ink); border-left-color: var(--accent-ink); font-weight: 550; }
.toc .lvl-3 a { padding-left: 28px; font-size: 13px; }

/* -------------------------------------------------------------- article -- */

.docs-main { min-width: 0; padding: 8px 0 0; }
.article-head { padding: 10px 0 4px; }
.article-eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 620;
  letter-spacing: 0.01em;
  color: var(--accent-ink);
}
.article-title {
  font-size: clamp(30px, 4.1vw, 45px);
  line-height: 1.08;
  letter-spacing: -0.032em;
  font-weight: 660;
  text-wrap: balance;
}
.article-standfirst {
  margin-top: 16px;
  max-width: var(--measure);
  font-size: 18.5px;
  line-height: 1.6;
  color: var(--ink-2);
  text-wrap: pretty;
}
.article-meta {
  margin-top: 20px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--hairline-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 12.5px;
  color: var(--ink-4);
}
.article-meta > * { display: inline-flex; align-items: center; gap: 6px; }

/* ---------------------------------------------------------------- prose -- */

.prose {
  max-width: var(--measure);
  font-size: 16.5px;
  line-height: 1.72;
  color: var(--ink-2);
  text-wrap: pretty;
}
.prose > * + * { margin-top: 1.15em; }
.prose h2 {
  margin-top: 2.2em;
  font-size: 26px;
  line-height: 1.22;
  letter-spacing: -0.024em;
  color: var(--ink);
  scroll-margin-top: calc(var(--nav-h) + 40px);
}
.prose h3 {
  margin-top: 1.8em;
  font-size: 19.5px;
  line-height: 1.32;
  letter-spacing: -0.018em;
  color: var(--ink);
  scroll-margin-top: calc(var(--nav-h) + 40px);
}
.prose h4 { margin-top: 1.5em; font-size: 16.5px; color: var(--ink); }
.prose strong { color: var(--ink); font-weight: 620; }
.prose a {
  color: var(--accent-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2.5px;
  transition: opacity 0.16s;
}
.prose a:hover { opacity: 0.72; }
.prose ul, .prose ol { padding-left: 1.35em; }
.prose li + li { margin-top: 0.45em; }
.prose li::marker { color: var(--ink-4); }
.prose hr { border: 0; border-top: 1px solid var(--hairline-soft); margin: 2.4em 0; }
.prose blockquote { border-left: 2px solid var(--hairline); padding-left: 18px; color: var(--ink-3); }
.prose figure { margin: 1.9em 0; }
.prose figcaption { margin-top: 11px; font-size: 13px; line-height: 1.55; color: var(--ink-4); }

/* A menu path reads best unbroken, but a long one must not push the page
   sideways. Breaking is allowed at the spaces around the separators, and
   nowhere else. */
.path { font-weight: 600; color: var(--ink); }

kbd {
  display: inline-block;
  min-width: 1.9em;
  padding: 2px 7px 3px;
  font-family: var(--font-sans);
  font-size: 0.86em;
  font-weight: 600;
  line-height: 1.5;
  text-align: center;
  color: var(--ink);
  background: linear-gradient(180deg, var(--fill-2), var(--fill-1));
  border: 1px solid var(--hairline);
  border-bottom-width: 2px;
  border-radius: var(--r-6);
  box-shadow: inset 0 1px 0 var(--fill-hi);
  vertical-align: baseline;
  white-space: nowrap;
}
.keys { display: inline-flex; align-items: center; gap: 3px; white-space: nowrap; }
.keys .plus { color: var(--ink-4); font-size: 0.78em; margin: 0 1px; }

/* -------------------------------------------------------------- callout -- */

.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 13px;
  margin: 1.9em 0;
  padding: 15px 18px;
  border-radius: var(--r-10);
  border: 1px solid var(--hairline-soft);
  border-left: 3px solid var(--co);
  background: var(--co-bg);
  font-size: 15.5px;
  line-height: 1.62;
}
.callout > svg { width: 19px; height: 19px; color: var(--co); margin-top: 2px; flex: none; }
.callout-body > * + * { margin-top: 0.7em; }
.callout b { display: block; margin-bottom: 3px; font-size: 14.5px; font-weight: 640; color: var(--ink); }
.callout.note { --co: var(--blue); --co-bg: var(--blue-soft); }
.callout.tip { --co: var(--green); --co-bg: var(--green-soft); }
.callout.important { --co: var(--accent); --co-bg: var(--accent-soft); }
.callout.warning { --co: var(--amber); --co-bg: var(--amber-soft); }
.callout.premium { --co: var(--violet); --co-bg: var(--violet-soft); }

/* ---------------------------------------------------------------- steps -- */

.steps { list-style: none; counter-reset: step; padding: 0; margin: 2em 0; }
.steps > li { position: relative; counter-increment: step; padding: 0 0 30px 46px; }
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: -1px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 14px;
  font-weight: 640;
  font-variant-numeric: tabular-nums;
}
.steps > li::after {
  content: "";
  position: absolute;
  left: 13.5px;
  top: 34px;
  bottom: 8px;
  width: 1px;
  background: var(--hairline);
}
.steps > li:last-child { padding-bottom: 0; }
.steps > li:last-child::after { display: none; }
.steps h3 {
  margin: 3px 0 0;
  font-size: 17.5px;
  font-weight: 640;
  letter-spacing: -0.014em;
  color: var(--ink);
  scroll-margin-top: calc(var(--nav-h) + 40px);
}
.steps p { margin-top: 0.6em; }
.steps figure { margin: 1.1em 0 0; }
.steps .callout { margin: 1.1em 0 0; }

/* ----------------------------------------------------------------- table -- */

.spec-table {
  width: 100%;
  margin: 1.9em 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--r-10);
  border: 1px solid var(--hairline-soft);
}
.spec-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}
.spec-table th, .spec-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--hairline-soft);
}
.spec-table thead th {
  font-size: 13px;
  font-weight: 640;
  letter-spacing: 0.005em;
  color: var(--ink-3);
  background: var(--fill-1);
}
.spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody tr:hover { background: var(--fill-1); }
.spec-table td:first-child { color: var(--ink); }

/* ------------------------------------------------------------------ faq -- */

.faq { margin: 2.6em 0 0; }
.faq h2 { margin-bottom: 6px; }
.faq details { border-bottom: 1px solid var(--hairline-soft); }
.faq summary {
  display: block;
  position: relative;
  padding: 17px 34px 17px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.45;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 5px;
  top: 24px;
  width: 8px;
  height: 8px;
  border-right: 1.8px solid var(--ink-4);
  border-bottom: 1.8px solid var(--ink-4);
  transform: rotate(45deg);
  transition: transform 0.22s var(--smooth);
}
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq .faq-a { padding: 0 0 18px; font-size: 15.5px; line-height: 1.68; color: var(--ink-2); }
.faq .faq-a > * + * { margin-top: 0.8em; }

/* -------------------------------------------------------------- related -- */

.related { margin: 54px 0 0; padding-top: 34px; border-top: 1px solid var(--hairline-soft); }
.related h2 { font-size: 19px; font-weight: 640; letter-spacing: -0.018em; margin-bottom: 18px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(228px, 100%), 1fr)); gap: 14px; }
.related-card {
  display: block;
  padding: 18px 20px;
  border-radius: var(--r-14);
  background: var(--fill-1);
  border: 1px solid var(--hairline-soft);
  transition: transform 0.24s var(--snappy), background 0.18s;
}
.related-card:hover { transform: translateY(-3px); background: var(--fill-2); text-decoration: none; }
.related-card .rc-eyebrow { font-size: 12px; font-weight: 600; color: var(--ink-4); }
.related-card h3 {
  margin-top: 8px;
  font-size: 17px;
  font-weight: 620;
  letter-spacing: -0.015em;
  line-height: 1.32;
  color: var(--ink);
}
.related-card p { margin-top: 7px; font-size: 14.5px; line-height: 1.55; color: var(--ink-3); }

/* -------------------------------------------------------- guides index -- */

.guides-hero { padding: 30px 0 8px; }
.guides-hero h1 {
  font-size: clamp(34px, 5vw, 55px);
  letter-spacing: -0.034em;
  line-height: 1.05;
  font-weight: 660;
  text-wrap: balance;
}
.guides-hero .lede { margin-top: 18px; max-width: 40rem; }

.guides-section { margin-top: 46px; }
.guides-section > h2 {
  font-size: 13.5px;
  font-weight: 640;
  letter-spacing: 0.005em;
  color: var(--ink-3);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hairline-soft);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(310px, 100%), 1fr));
  gap: 16px;
  margin-top: 20px;
}
.doc-card {
  display: flex;
  flex-direction: column;
  padding: 24px 26px;
  border-radius: var(--r-18);
  background: var(--fill-1);
  border: 1px solid var(--hairline-soft);
  transition: transform 0.26s var(--snappy), background 0.18s, border-color 0.18s;
}
.doc-card:hover {
  transform: translateY(-4px);
  background: var(--fill-2);
  border-color: var(--hairline);
  text-decoration: none;
}
.doc-card h3 {
  margin-top: 0;
  font-size: 19px;
  font-weight: 620;
  letter-spacing: -0.018em;
  line-height: 1.3;
  color: var(--ink);
}
.doc-card p { margin-top: 9px; font-size: 15px; line-height: 1.58; color: var(--ink-3); flex: 1; }

/* -------------------------------------------------------- utility pages -- */

.utility-page { padding: 44px 0 100px; text-align: center; }
.utility-page.no-crumbs { padding-top: calc(var(--nav-h) + 60px); }
.utility-title {
  font-size: clamp(30px, 4.6vw, 48px);
  letter-spacing: -0.032em;
  line-height: 1.08;
  font-weight: 660;
  margin-top: 8px;
}
.utility-page .lede { margin: 18px auto 0; max-width: 36rem; }
.utility-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(248px, 100%), 1fr));
  gap: 14px;
  margin-top: 44px;
  text-align: left;
}
.utility-card {
  display: block;
  padding: 22px 24px;
  border-radius: var(--r-14);
  background: var(--fill-1);
  border: 1px solid var(--hairline-soft);
  transition: transform 0.24s var(--snappy), background 0.18s;
}
.utility-card:hover { transform: translateY(-3px); background: var(--fill-2); text-decoration: none; }
.utility-card h2 { font-size: 16.5px; font-weight: 620; letter-spacing: -0.014em; color: var(--ink); }
.utility-card p { margin-top: 7px; font-size: 13.5px; line-height: 1.55; color: var(--ink-3); }

.legal { max-width: 780px; margin-inline: auto; padding: 34px 22px 90px; }
.legal-head { margin-bottom: 32px; padding-bottom: 26px; border-bottom: 1px solid var(--hairline-soft); }
.legal-head h1 {
  font-size: clamp(31px, 4.6vw, 46px);
  letter-spacing: -0.032em;
  line-height: 1.08;
  font-weight: 660;
}
.legal-meta { margin-top: 14px; font-size: 13px; color: var(--ink-4); }
.legal .prose { max-width: none; font-size: 16px; }
.legal .prose h2 { font-size: 22px; margin-top: 2em; }
.legal .prose h3 { font-size: 17.5px; }

/* ------------------------------------------------------------- brand link -- */

.prose .brand-link,
.article-standfirst .brand-link,
.lede .brand-link {
  color: inherit;
  font-weight: 650;
  text-decoration: underline;
  text-decoration-thickness: from-font;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  text-underline-offset: 2px;
  transition: color 0.15s, text-decoration-color 0.15s;
}
.prose .brand-link:hover,
.article-standfirst .brand-link:hover,
.lede .brand-link:hover { color: var(--accent); text-decoration-color: var(--accent); }
.prose .brand-link:focus-visible,
.article-standfirst .brand-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}
.prose h2 .brand-link, .prose h3 .brand-link { text-decoration-color: transparent; }
.prose h2 .brand-link:hover, .prose h3 .brand-link:hover { text-decoration-color: var(--accent); }

/* ----------------------------------------------------------------- reveal -- */

@keyframes settle {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: none; }
}
.rv.in { animation: settle 0.7s var(--ease-reveal) both; }

@media (prefers-reduced-motion: reduce) {
  .rv.in { animation: none; }
  .doc-card:hover, .related-card:hover, .utility-card:hover { transform: none; }
  .docs-side { transition: none; }
  .prose .brand-link, .article-standfirst .brand-link { transition: none; }
}