/* ==========================================================================
   Brex Card — design system
   Modern / technical / corporate fintech. Desktop-first, 1240px container.
   ========================================================================== */

:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-dark: #121827;
  --text: #141820;
  --secondary: #69707d;
  --border: #dfe3ea;
  --accent: #3558d8;
  --accent-dark: #233b9b;
  --accent-light: #e8edff;

  --font-head: 'Space Grotesk', 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-body: 'DM Sans', 'Segoe UI', Helvetica, Arial, sans-serif;

  --container: 1240px;
  --toc: 240px;
  --measure: 780px;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(20, 24, 32, 0.05);
  --shadow: 0 8px 28px rgba(20, 24, 32, 0.07);
  --shadow-lg: 0 24px 60px rgba(20, 24, 32, 0.12);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
}

/* --------------------------------------------------------- reset & base -- */

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; }

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 3px;
}
a:hover { text-decoration: underline; color: var(--accent-dark); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 0;
  font-weight: 600;
}

h1 {
  font-size: clamp(52px, 6vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 700;
}

h2 {
  font-size: clamp(38px, 4vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

h3 { font-size: 22px; line-height: 1.3; }
h4 { font-size: 18px; line-height: 1.4; }

p { margin: 0 0 var(--space-5); }
p:last-child { margin-bottom: 0; }

code {
  font-family: ui-monospace, 'SFMono-Regular', 'Cascadia Mono', Menlo, monospace;
  font-size: 0.88em;
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

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

.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;
}

.skip-link {
  position: absolute;
  top: -60px; left: var(--space-4);
  z-index: 200;
  background: var(--surface-dark);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  transition: top 0.15s ease;
}
.skip-link:focus { top: var(--space-3); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.eyebrow {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--space-4);
}

.lead {
  font-size: 21px;
  line-height: 1.55;
  color: #333a47;
}

/* ------------------------------------------------------------- buttons -- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--sm { padding: 9px 16px; font-size: 14px; }

.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-dark); color: #fff; }

.btn--ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-dark); }

.btn--dark { background: var(--surface-dark); color: #fff; }
.btn--dark:hover { background: #1d2740; color: #fff; }

/* -------------------------------------------------------------- header -- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: 72px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand:hover { text-decoration: none; }
.brand__mark { display: inline-flex; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.03em;
  color: var(--text);
}
.brand__name span { color: var(--accent); }
.brand__sub {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
}

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: var(--space-1); list-style: none; margin: 0; padding: 0; }
.nav__item { position: relative; }

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
}
.nav__link:hover { background: var(--accent-light); color: var(--accent-dark); text-decoration: none; }
.nav__link.is-active { color: var(--accent-dark); background: var(--accent-light); }

.nav__chev {
  width: 7px; height: 7px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: 0.5;
}

.nav-panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: 640px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s;
}
.nav__item--has-panel:hover .nav-panel,
.nav__item--has-panel:focus-within .nav-panel,
.nav-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-panel::before {
  content: '';
  position: absolute;
  top: -10px; left: 0; right: 0; height: 10px;
}
.nav-panel__inner { display: grid; grid-template-columns: 1fr 1fr 0.9fr; gap: var(--space-6); }
.nav-panel__title {
  display: block;
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: var(--space-3);
}
.nav-panel__col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.nav-panel__col a {
  display: block;
  color: var(--text);
  font-size: 15px;
  padding: 6px 8px;
  margin-left: -8px;
  border-radius: var(--radius-sm);
}
.nav-panel__col a:hover { background: var(--bg); color: var(--accent-dark); text-decoration: none; }
.nav-panel__col--cta {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.nav-panel__col--cta p { font-size: 14px; color: var(--secondary); margin-bottom: var(--space-4); }

.site-header__actions { display: flex; align-items: center; gap: var(--space-3); flex: none; }

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--secondary);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 9px 14px;
  cursor: pointer;
}
.search-trigger:hover { border-color: var(--accent); color: var(--accent-dark); }

.burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 42px; height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.burger span { display: block; width: 18px; height: 1.8px; background: var(--text); }

.mobile-nav {
  border-top: 1px solid var(--border);
  background: var(--surface);
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  padding: var(--space-5) 0 var(--space-7);
}
.mobile-nav__group { padding: var(--space-3) 0; border-bottom: 1px solid var(--border); }
.mobile-nav__head {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 17px;
  color: var(--text);
  display: block;
  margin-bottom: var(--space-2);
}
.mobile-nav__group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.mobile-nav__group a { color: var(--secondary); font-size: 15px; display: block; padding: 5px 0; }

/* ---------------------------------------------------------------- hero -- */

.hero {
  padding: var(--space-8) 0 var(--space-7);
  background:
    radial-gradient(1000px 420px at 12% -10%, var(--accent-light), transparent 70%),
    linear-gradient(180deg, var(--surface), var(--bg));
  border-bottom: 1px solid var(--border);
}
.hero__inner { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-7); }
.hero--split .hero__inner { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); align-items: center; }
.hero__main { max-width: 900px; }
.hero--split .hero__main { max-width: none; }
.hero h1 { margin-bottom: var(--space-5); }
.hero__lead {
  font-size: 20px;
  line-height: 1.6;
  color: #333a47;
  max-width: 68ch;
  margin-bottom: var(--space-6);
}
.hero__ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-5); }

.breadcrumbs { margin-bottom: var(--space-5); }
.breadcrumbs ol {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 8px; list-style: none; margin: 0; padding: 0;
  font-size: 13px; color: var(--secondary);
}
.breadcrumbs li + li::before { content: '/'; margin-right: 8px; color: var(--border); }
.breadcrumbs a { color: var(--secondary); }
.breadcrumbs a:hover { color: var(--accent-dark); }

.meta { font-size: 13px; color: var(--secondary); display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.meta__sep { color: var(--border); }

/* ------------------------------------------------------------ sections -- */

.section { padding: var(--space-8) 0; }
.section + .section { padding-top: 0; }
.section--surface { background: var(--surface); border-block: 1px solid var(--border); padding: var(--space-8) 0; }
.section--surface + .section { padding-top: var(--space-8); }
.section--dark {
  background: var(--surface-dark);
  color: #dfe4ee;
  padding: var(--space-8) 0;
}
.section--dark + .section { padding-top: var(--space-8); }
.section--dark h2, .section--dark h3 { color: #fff; }
.section--dark .eyebrow { color: #8fa7ff; }
.section--dark .section__intro { color: #a8b1c4; }
.section--dark .tile { background: #1a2135; border-color: #2a3350; }
.section--dark .tile__text { color: #a8b1c4; }
.section--dark .tile__title { color: #fff; }
.section--dark .tile--link:hover { border-color: #4d6ce0; }
.section--dark .stat { background: #1a2135; border-color: #2a3350; }
.section--dark .stat__value { color: #fff; }
.section--dark .stat__label { color: #a8b1c4; }

.section__head { max-width: 820px; margin-bottom: var(--space-6); }
.section__head h2 { margin-bottom: var(--space-4); }
.section__intro { font-size: 19px; line-height: 1.6; color: var(--secondary); margin: 0; }
.section__body > * + * { margin-top: var(--space-5); }
.section__body h3 { margin-top: var(--space-6); }
.section__body h4 { margin-top: var(--space-5); }

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

.article-shell {
  display: grid;
  grid-template-columns: var(--toc) minmax(0, var(--measure));
  gap: var(--space-8);
  padding: var(--space-8) 0 var(--space-9);
  align-items: start;
}

.toc { position: sticky; top: 96px; }
.toc__inner {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--space-4);
  max-height: calc(100vh - 140px);
  overflow-y: auto;
}
.toc__title {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--secondary);
  margin: 0 0 var(--space-3);
}
.toc__list { list-style: none; margin: 0; padding: 0; counter-reset: toc; display: grid; gap: 1px; }
.toc__list li { counter-increment: toc; }
.toc__list a {
  display: block;
  font-size: 14px;
  line-height: 1.4;
  color: var(--secondary);
  padding: 7px 10px 7px 12px;
  border-left: 2px solid var(--border);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.toc__list a:hover { color: var(--accent-dark); background: var(--bg); text-decoration: none; }
.toc__list a.is-current {
  color: var(--accent-dark);
  border-left-color: var(--accent);
  background: var(--accent-light);
  font-weight: 500;
}

.article-body { min-width: 0; }
.article-body .section { padding: 0 0 var(--space-7); }
.article-body .section + .section { padding-top: 0; }
.article-body .section__head { margin-bottom: var(--space-5); }
.article-body h2 { font-size: clamp(30px, 2.6vw, 40px); line-height: 1.12; }
.article-body h3 { font-size: 21px; }

/* The article column is 780px, so wide grids need a narrower arrangement
   than the same components get inside a full-width section. */
.article-body .mock-flow { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.article-body .mock-flow__node + .mock-flow__node::before { display: none; }
.article-body .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.article-body .mock-dash__kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* ------------------------------------------------------------ notices -- */

.notice {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-7);
  font-size: 15px;
  color: var(--secondary);
}
.notice p { margin: 0; }
.notice strong { color: var(--text); }

.callout {
  border-radius: var(--radius);
  padding: var(--space-5);
  border: 1px solid var(--border);
  background: var(--surface);
}
.callout--info { background: var(--accent-light); border-color: #ccd7ff; }
.callout--warn { background: #fff8ec; border-color: #f0dfc0; }
.callout--neutral { background: var(--surface); }
.callout__title { font-size: 17px; margin-bottom: var(--space-2); }
.callout__text { margin: 0; font-size: 16px; color: #333a47; }

.note { font-size: 15px; color: var(--secondary); border-left: 2px solid var(--border); padding-left: var(--space-4); }

/* --------------------------------------------------------------- grids -- */

.grid { display: grid; gap: var(--space-5); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.tile--link { transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease; }
.tile--link:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  text-decoration: none;
}
.tile__tag {
  align-self: flex-start;
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-light);
  padding: 4px 8px;
  border-radius: 3px;
}
.tile__title { font-size: 20px; margin: 0; }
.tile__text { font-size: 15px; color: var(--secondary); margin: 0; flex: 1; }
.tile__more {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}
.tile__more::after { content: ' →'; }

.feature {
  border-top: 2px solid var(--text);
  padding-top: var(--space-4);
}
.feature__index {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: block;
  margin-bottom: var(--space-2);
}
.feature__title { font-size: 20px; margin-bottom: var(--space-2); }
.feature__text { font-size: 16px; color: var(--secondary); margin: 0; }

.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: var(--space-4); }
.steps__item {
  counter-increment: step;
  position: relative;
  padding: var(--space-4) var(--space-5) var(--space-4) 68px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.steps__item::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: var(--space-5);
  top: var(--space-4);
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}
.steps__title { font-size: 18px; margin-bottom: 4px; }
.steps__text { font-size: 16px; color: var(--secondary); margin: 0; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
}
.stat__value {
  display: block;
  font-family: var(--font-head);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.stat__label { display: block; font-size: 14px; color: var(--secondary); margin-top: 6px; }

.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5); }
.split__col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-5);
}
.split__title { font-size: 18px; margin-bottom: var(--space-3); }

/* --------------------------------------------------------------- lists -- */

.list { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.list li { padding-left: 4px; }
.list--ordered { list-style: decimal; }

.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.checklist li { position: relative; padding-left: 30px; }
.checklist li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--accent);
}

.definitions { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--border); }
.definitions__row {
  display: grid;
  grid-template-columns: minmax(160px, 30%) 1fr;
  gap: var(--space-5);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border);
}
.definitions dt { font-family: var(--font-head); font-weight: 600; font-size: 16px; }
.definitions dd { margin: 0; color: var(--secondary); font-size: 16px; }

.link-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.link-list a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.link-list a:hover { border-color: var(--accent); text-decoration: none; }
.link-list__label { font-family: var(--font-head); font-weight: 600; font-size: 16px; color: var(--text); }
.link-list__text { font-size: 14px; color: var(--secondary); }

.sources { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); }
.sources li {
  font-size: 15px;
  color: var(--secondary);
  padding-left: var(--space-4);
  border-left: 2px solid var(--border);
}
.sources__type {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-light);
  padding: 2px 7px;
  border-radius: 3px;
  margin-right: 8px;
}

/* -------------------------------------------------------------- tables -- */

.table-wrap { margin: 0; }
.table-wrap__caption {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: var(--space-3);
}
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 560px; }
.data-table th, .data-table td {
  text-align: left;
  padding: 14px var(--space-4);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.data-table thead th {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
  background: var(--bg);
  white-space: nowrap;
}
.data-table tbody th { font-family: var(--font-head); font-weight: 600; color: var(--text); width: 26%; }
.data-table td { color: var(--secondary); }
.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: #fbfcfe; }
.table-wrap__note { font-size: 14px; color: var(--secondary); margin: var(--space-3) 0 0; }

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

.faq { display: grid; gap: var(--space-3); }
.faq__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq__item[open] { border-color: #c6d2f7; box-shadow: var(--shadow-sm); }
.faq__q {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  padding: var(--space-4) 52px var(--space-4) var(--space-5);
  cursor: pointer;
  position: relative;
  list-style: none;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after {
  content: '';
  position: absolute;
  right: var(--space-5);
  top: 50%;
  width: 9px; height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}
.faq__item[open] .faq__q::after { transform: rotate(-135deg); margin-top: -2px; }
.faq__a { padding: 0 var(--space-5) var(--space-5); color: var(--secondary); font-size: 16px; }
.faq__a p { margin-bottom: var(--space-3); }
.faq__a p:last-child { margin-bottom: 0; }

/* ------------------------------------------------------------- mockups -- */

.mock {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.mock__chrome {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-4);
  background: var(--surface-dark);
  border-bottom: 1px solid #2a3350;
}
.mock__dots { display: inline-flex; gap: 5px; }
.mock__dots i { width: 8px; height: 8px; border-radius: 50%; background: #39425e; display: block; }
.mock__label {
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8b95ad;
}
.mock__body { padding: var(--space-5); background: linear-gradient(180deg, #fbfcfe, #fff); }
.mock--wide { grid-column: 1 / -1; }
.mock__caption {
  font-size: 13px;
  color: var(--secondary);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.mock-card-set { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
.mock-card {
  position: relative;
  aspect-ratio: 1.6 / 1;
  border-radius: 14px;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: #fff;
  font-family: var(--font-head);
  box-shadow: var(--shadow);
}
.mock-card--primary { background: linear-gradient(140deg, #233b9b, #3558d8 55%, #121827); }
.mock-card--virtual { background: linear-gradient(140deg, #121827, #2a3350 70%, #3558d8); }
.mock-card__kind {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.75;
}
.mock-card__chip {
  width: 34px; height: 24px;
  border-radius: 4px;
  background: linear-gradient(135deg, #e8edff, #9fb2f0);
  margin-top: auto;
}
.mock-card__digits { font-size: 16px; letter-spacing: 0.12em; margin-top: auto; }
.mock-card__row {
  display: flex;
  justify-content: space-between;
  font-size: 9.5px;
  letter-spacing: 0.1em;
  opacity: 0.8;
}

.mock-panel { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.mock-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
}
.mock-pill {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-light);
  padding: 3px 8px;
  border-radius: 999px;
  font-weight: 600;
}
.mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 12px var(--space-4);
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.mock-row:last-child { border-bottom: 0; }
.mock-row__key { color: var(--secondary); }
.mock-row__val { font-family: var(--font-head); font-weight: 500; display: inline-flex; align-items: center; gap: 8px; }
.mock-toggle {
  width: 30px; height: 17px;
  border-radius: 999px;
  background: var(--border);
  position: relative;
  display: inline-block;
}
.mock-toggle::after {
  content: '';
  position: absolute;
  top: 2.5px; left: 2.5px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.mock-toggle.is-on { background: var(--accent); }
.mock-toggle.is-on::after { left: auto; right: 2.5px; }

.mock-bar {
  display: grid;
  grid-template-columns: 150px 1fr 110px;
  align-items: center;
  gap: var(--space-4);
  padding: 12px var(--space-4);
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.mock-bar:last-child { border-bottom: 0; }
.mock-bar__label { font-family: var(--font-head); font-weight: 500; }
.mock-bar__track { height: 8px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); overflow: hidden; }
.mock-bar__fill { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-dark)); }
.mock-bar__pct { color: var(--secondary); font-size: 13px; text-align: right; }

.mock-flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--space-3); }
.mock-flow__node {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  position: relative;
}
.mock-flow__node + .mock-flow__node::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-3) - 1px);
  top: 50%;
  width: var(--space-3);
  height: 1px;
  background: var(--border);
}
.mock-flow__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 8px;
}
.mock-flow__title { display: block; font-family: var(--font-head); font-weight: 600; font-size: 15px; }
.mock-flow__text { display: block; font-size: 12.5px; color: var(--secondary); line-height: 1.5; margin-top: 4px; }

.mock-table { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; font-size: 14px; }
.mock-table__row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 0.8fr 1fr;
  gap: var(--space-3);
  padding: 11px var(--space-4);
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.mock-table__row:last-child { border-bottom: 0; }
.mock-table__row--head {
  background: var(--bg);
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
}
.mock-status {
  font-size: 12px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 999px;
  justify-self: start;
}
.mock-status--ok { background: #e7f5ee; color: #1f6b47; }
.mock-status--warn { background: #fff4e2; color: #8a5a12; }
.mock-status--flag { background: #fdeceb; color: #a12d24; }

.mock-dash { display: grid; gap: var(--space-4); }
.mock-dash__kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-3); }
.mock-kpi { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: var(--space-3); background: var(--surface); }
.mock-kpi__label { display: block; font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--secondary); }
.mock-kpi__value { display: block; font-family: var(--font-head); font-size: 22px; font-weight: 700; margin-top: 4px; }
.mock-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  height: 140px;
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.mock-chart__col { flex: 1; border-radius: 3px 3px 0 0; background: linear-gradient(180deg, var(--accent), #93a9f0); }
.mock-dash__legend { font-size: 13px; color: var(--secondary); margin: 0; }

.mock-tree { display: grid; gap: var(--space-4); justify-items: center; }
.mock-tree__root {
  font-family: var(--font-head);
  font-weight: 600;
  background: var(--surface-dark);
  color: #fff;
  padding: 10px var(--space-5);
  border-radius: var(--radius-sm);
}
.mock-tree__branches { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); width: 100%; }
.mock-tree__branch {
  display: grid;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  background: var(--surface);
  position: relative;
}
.mock-tree__branch::before {
  content: '';
  position: absolute;
  top: calc(-1 * var(--space-4));
  left: 50%;
  width: 1px;
  height: var(--space-4);
  background: var(--border);
}
.mock-tree__team { font-family: var(--font-head); font-weight: 600; font-size: 15px; }
.mock-tree__leaf {
  font-size: 12.5px;
  color: var(--secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 8px;
}

/* -------------------------------------------------------------- search -- */

.search-modal { position: fixed; inset: 0; z-index: 200; }
.search-modal__backdrop { position: absolute; inset: 0; background: rgba(18, 24, 39, 0.5); backdrop-filter: blur(3px); }
.search-modal__panel {
  position: relative;
  max-width: 720px;
  margin: 10vh auto 0;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.search-modal__form {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--border);
}
.search-modal__form input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 17px;
  padding: 12px var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  min-width: 0;
}
.search-modal__close {
  background: none;
  border: 0;
  font-size: 26px;
  line-height: 1;
  color: var(--secondary);
  cursor: pointer;
  padding: 0 6px;
}
.search-modal__results { max-height: 56vh; overflow-y: auto; padding: var(--space-3) var(--space-4) var(--space-5); }
.search-modal__hint { font-size: 14px; color: var(--secondary); margin: var(--space-3) 0; }
.search-result { display: block; padding: var(--space-3); border-radius: var(--radius-sm); border: 1px solid transparent; }
.search-result:hover, .search-result:focus { background: var(--bg); border-color: var(--border); text-decoration: none; }
.search-result__title { font-family: var(--font-head); font-weight: 600; font-size: 16px; color: var(--text); display: block; }
.search-result__path { font-size: 12px; color: var(--accent); display: block; margin-top: 2px; }
.search-result__text { font-size: 14px; color: var(--secondary); display: block; margin-top: 4px; }

.search-page__form { display: flex; gap: var(--space-3); max-width: 620px; }
.search-page__form input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 17px;
  padding: 13px var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.search-page__results { display: grid; gap: var(--space-3); margin-top: var(--space-6); }

/* -------------------------------------------------------------- footer -- */

.site-footer {
  background: var(--surface-dark);
  color: #a8b1c4;
  padding: var(--space-8) 0 var(--space-6);
  margin-top: var(--space-9);
  font-size: 15px;
}
.site-footer a { color: #c8d0e0; }
.site-footer a:hover { color: #fff; }
.site-footer .brand__name { color: #fff; }
.site-footer .brand__sub { color: #7c869c; }
.site-footer .btn--ghost { background: transparent; border-color: #333d57; color: #dfe4ee; }
.site-footer .btn--ghost:hover { border-color: #5b74d6; color: #fff; }

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 2.4fr);
  gap: var(--space-8);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid #262f47;
}
.site-footer__pitch { font-size: 14.5px; line-height: 1.7; margin: var(--space-4) 0 var(--space-5); }
.site-footer__nav { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-5); }
.site-footer__title {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  margin: 0 0 var(--space-3);
}
.site-footer__col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.site-footer__col a { font-size: 14px; }

.site-footer__disclaimer {
  padding: var(--space-5) 0;
  border-bottom: 1px solid #262f47;
  font-size: 13.5px;
  line-height: 1.7;
  color: #8b95ad;
  max-width: 96ch;
}
.site-footer__disclaimer strong { color: #dfe4ee; }
.site-footer__disclaimer p { margin: 0 0 var(--space-2); }
.site-footer__disclaimer p:last-child { margin: 0; }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-5);
  font-size: 13.5px;
}
.site-footer__bottom p { margin: 0; }
.site-footer__legal { display: flex; flex-wrap: wrap; gap: var(--space-4); list-style: none; margin: 0; padding: 0; }

/* --------------------------------------------------------- responsive -- */

@media (max-width: 1120px) {
  .article-shell { grid-template-columns: 200px minmax(0, 1fr); gap: var(--space-6); }
  .site-footer__top { grid-template-columns: minmax(0, 1fr); gap: var(--space-6); }
  .site-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mock-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mock-flow__node + .mock-flow__node::before { display: none; }
}

@media (max-width: 1000px) {
  .nav, .search-trigger span { display: none; }
  .burger { display: inline-flex; }
  .site-header__inner { gap: var(--space-4); }
  .hero--split .hero__inner { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mock-dash__kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  html { scroll-padding-top: 88px; }
  .article-shell { grid-template-columns: minmax(0, 1fr); padding-top: var(--space-6); }
  .toc { position: static; }
  .toc__inner { max-height: none; }
  .section, .section--surface, .section--dark { padding: var(--space-7) 0; }
  .grid--2, .split, .definitions__row { grid-template-columns: minmax(0, 1fr); }
  .mock-bar { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .mock-bar__pct { text-align: left; }
  .mock-tree__branches { grid-template-columns: minmax(0, 1fr); }
  .mock-tree__branch::before { display: none; }
}

@media (max-width: 640px) {
  body { font-size: 16.5px; }
  .container { padding: 0 var(--space-4); }
  .hero { padding: var(--space-6) 0 var(--space-6); }
  .grid--3, .grid--4, .stats, .mock-card-set, .mock-flow, .mock-dash__kpis { grid-template-columns: minmax(0, 1fr); }
  .mock-table__row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); font-size: 13px; }
  .site-footer__nav { grid-template-columns: minmax(0, 1fr); }
  .search-modal__panel { margin: 0; border-radius: 0; height: 100%; }
  .search-modal__results { max-height: calc(100vh - 92px); }
  .steps__item { padding: var(--space-4); }
  .steps__item::before { position: static; display: block; margin-bottom: 4px; }
}

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

@media print {
  .site-header, .site-footer__nav, .search-modal, .toc, .skip-link { display: none !important; }
  body { background: #fff; font-size: 12pt; }
  .hero { background: none; }
}