/* ==========================================================
   VeryQuery Help Portal
   Editorial cartography, warm paper; reuses design-system
   tokens from veryquery.com/design-system.css.

   Layout = topic rail + article column. No JS framework;
   each page carries the rail inline for simple crawlability.
========================================================== */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--t-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: underline; text-underline-offset: 0.18em; }
a:hover { color: var(--accent-deep); }

/* ---------- Top bar ---------- */
.topbar {
  border-bottom: 1px solid var(--rule);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  background: var(--paper);
  position: sticky; top: 0; z-index: 10;
}
.topbar__mark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.125rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.topbar__sigil {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--accent);
  line-height: 1;
}
.topbar__crumb {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mid);
}
.topbar__crumb a { text-decoration: none; color: var(--ink-mid); }
.topbar__crumb a:hover { color: var(--accent-deep); }
.topbar__crumb .sep { margin: 0 0.5rem; color: var(--ink-ghost); }
.topbar__links {
  display: flex;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.topbar__links a { text-decoration: none; color: var(--ink-mid); }
.topbar__links a:hover { color: var(--accent-deep); }

/* ---------- Layout ---------- */
.layout {
  max-width: 72rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 6rem;
  display: grid;
  grid-template-columns: 15rem 1fr;
  gap: 3rem;
  align-items: start;
}
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; gap: 2rem; padding: 1.5rem 1.25rem 4rem; }
  .rail { position: static; }
}

/* ---------- Rail ---------- */
.rail {
  position: sticky;
  top: 5.5rem;
  border-right: 1px solid var(--rule-soft);
  padding-right: 1.25rem;
}
.rail__group { margin-bottom: 1.75rem; }
.rail__group:last-child { margin-bottom: 0; }
.rail__heading {
  font-family: var(--font-mono);
  font-size: var(--t-2xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-ghost);
  margin: 0 0 0.5rem;
}
.rail ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.rail li + li { margin-top: 0.125rem; }
.rail a {
  display: block;
  padding: 0.35rem 0.5rem;
  margin-left: -0.5rem;
  font-size: var(--t-sm);
  color: var(--ink-soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.6rem;
  margin-left: -0.75rem;
}
.rail a:hover { color: var(--accent-deep); }
.rail a[aria-current="page"] {
  color: var(--accent-deep);
  border-left-color: var(--accent);
  font-weight: 500;
}

/* ---------- Article ---------- */
.article { min-width: 0; }
.article__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mid);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.article__eyebrow .dot {
  width: 0.4rem; height: 0.4rem; border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.article__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
  color: var(--ink);
}
.article__lede {
  font-size: var(--t-lg);
  color: var(--ink-soft);
  margin: 0 0 2.5rem;
  max-width: 44rem;
  line-height: 1.5;
}

.prose h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
  margin: 2.75rem 0 0.75rem;
  letter-spacing: -0.005em;
}
.prose h3 {
  font-family: var(--font-body);
  font-size: var(--t-md);
  letter-spacing: 0.02em;
  text-transform: none;
  margin: 1.75rem 0 0.5rem;
  color: var(--ink);
  font-weight: 600;
}
.prose p { margin: 0 0 1rem; max-width: 44rem; }
.prose ul, .prose ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  max-width: 44rem;
}
.prose li { margin: 0.25rem 0; }
.prose strong { font-weight: 600; color: var(--ink); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--paper-deep);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

/* ---------- Callouts ---------- */
.callout {
  border: 1px solid var(--rule);
  background: var(--paper-deep);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  max-width: 44rem;
  font-size: var(--t-sm);
  color: var(--ink-soft);
}
.callout__k {
  font-family: var(--font-mono);
  font-size: var(--t-2xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mid);
  display: block;
  margin-bottom: 0.25rem;
}

/* ---------- Rate table ---------- */
.rate-table {
  width: 100%;
  max-width: 44rem;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: var(--t-sm);
}
.rate-table th, .rate-table td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--rule-soft);
}
.rate-table th {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--t-2xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mid);
  border-bottom: 1px solid var(--rule);
}
.rate-table td.num, .rate-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.rate-table .tier {
  font-family: var(--font-display);
  font-size: var(--t-md);
  font-weight: 500;
}

/* ---------- Landing hub ---------- */
.hub {
  max-width: 62rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}
.hub__head {
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 2rem;
}
.hub__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mid);
  margin-bottom: 0.75rem;
}
.hub__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin: 0 0 0.75rem;
  max-width: 40rem;
}
.hub__lede {
  font-size: var(--t-lg);
  color: var(--ink-soft);
  max-width: 42rem;
  line-height: 1.45;
  margin: 0;
}
.hub__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.25rem;
}
.hub-card {
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 1.5rem 1.5rem 1.75rem;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}
.hub-card:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: var(--paper-deep);
}
.hub-card__num {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.hub-card__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.35rem;
  line-height: 1.15;
  margin: 0 0 0.35rem;
}
.hub-card__body {
  font-size: var(--t-sm);
  color: var(--ink-mid);
  margin: 0;
}
.hub-card__items {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  font-size: var(--t-xs);
  color: var(--ink-mid);
}
.hub-card__items li { margin-top: 0.25rem; }