/* features@1 - generated by ci/compose.py. The patterns' CSS in page order. Never hand-edit: change the pattern and regenerate. */

/* ---- masthead-nav v10 ---- */
/* masthead-nav - tokens only, selectors prefixed. The menu inside
   .masthead-nav-links is styled by structure - ul, li, a - so the list the
   platform generates for {{menu.navigation}} and a list written by hand take
   the same rules. */

/* Each ground names its own inks, and every rule below reads the pair rather
   than a token, so nothing here knows which ground it is on. */
.masthead-nav--plain {
  --masthead-nav-ground: var(--color-bg);
  --masthead-nav-ink: var(--color-text);
  --masthead-nav-edge: var(--color-rule);
  --masthead-nav-cta-face: var(--color-primary);
  --masthead-nav-cta-ink: var(--color-on-primary);
  --masthead-nav-panel-face: var(--color-surface);
  --masthead-nav-panel-ink: var(--color-text);
  --masthead-nav-ring: var(--color-focus);
}
.masthead-nav--soft {
  --masthead-nav-ground: var(--color-surface-soft);
  --masthead-nav-ink: var(--color-text);
  --masthead-nav-edge: var(--color-rule);
  --masthead-nav-cta-face: var(--color-primary);
  --masthead-nav-cta-ink: var(--color-on-primary);
  --masthead-nav-panel-face: var(--color-surface);
  --masthead-nav-panel-ink: var(--color-text);
  --masthead-nav-ring: var(--color-focus);
}
.masthead-nav--brand {
  --masthead-nav-ground: var(--color-primary);
  --masthead-nav-ink: var(--color-on-primary);
  --masthead-nav-edge: color-mix(in srgb, var(--color-on-primary) 35%, transparent);
  --masthead-nav-cta-face: var(--color-on-primary);
  --masthead-nav-cta-ink: var(--color-primary);
  --masthead-nav-panel-face: var(--color-primary);
  --masthead-nav-panel-ink: var(--color-on-primary);
  --masthead-nav-ring: var(--color-on-primary);
}

/* ---- the bar ---- */
/* One number for every tap target here, and for the room the drawer keeps.
   Clipped sideways, never scrolled: a faded submenu is laid out where it
   will open, and one past the edge would otherwise widen the page. */
.masthead-nav {
  --masthead-nav-tap: 2.75rem;
  background: var(--masthead-nav-ground);
  color: var(--masthead-nav-ink);
  border-block-end: 1px solid var(--masthead-nav-edge);
  overflow-x: clip;
}
/* edge: every rung keeps the 1px border and changes only what paints it, so
   the bar is the same height on all three and --page-header-height holds. */
.masthead-nav--rule {
  border-block-end-color: var(--masthead-nav-edge);
}
.masthead-nav--shadow {
  border-block-end-color: transparent;
  box-shadow: var(--card-shadow);
}
.masthead-nav--flush {
  border-block-end-color: transparent;
}
.masthead-nav--static {
  position: static;
}
/* The z-index orders the drawer's scrim, panel and button against each other
   rather than against the page. `sticky` is no containing block for a fixed
   child, so the drawer still pins to the viewport. */
.masthead-nav--pinned,
.masthead-nav--compact {
  position: sticky;
  inset-block-start: 0;
  z-index: 40;
}
/* The containing block for the small-screen menu and for the controls when
   they are parked in the corner on --centred. */
.masthead-nav-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-3) var(--space-4);
}
.masthead-nav-mark {
  display: flex;
  align-items: center;
  flex: 0 1 auto;
  min-width: 0;
  margin-inline-end: auto;
}
/* The set height is the floor: `height: auto` under a `max-height` alone
   resolves a viewBox-only SVG to 0x0. object-fit stops the cap distorting it. */
.masthead-nav-logo {
  display: block;
  width: auto;
  height: var(--logo-height, 2.75rem);
  max-width: 100%;
  object-fit: contain;
}
/* mark: how the brand mark meets the ground behind it. */
.masthead-nav--direct .masthead-nav-mark {
  padding: 0;
}
.masthead-nav--plate .masthead-nav-mark {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--card-radius);
  background: var(--color-bg);
}
.masthead-nav--mono .masthead-nav-logo {
  filter: brightness(0) invert(1);
}

/* ---- the small-screen disclosure ---- */
.masthead-nav-disclosure {
  flex: 0 0 auto;
}
.masthead-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--masthead-nav-tap);
  padding-inline: var(--space-3);
  border: 1px solid var(--masthead-nav-edge);
  border-radius: var(--btn-radius);
  color: var(--masthead-nav-ink);
  font-family: var(--font-heading);
  font-size: calc(0.9375rem * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  cursor: pointer;
  /* Both lines are needed to drop the default triangle. */
  list-style: none;
}
.masthead-nav-toggle::-webkit-details-marker {
  display: none;
}
/* Three bars: the element is the middle one, the pseudo-elements the others.
   The fold into a cross is a state change, so reduced motion keeps it. */
.masthead-nav-toggle-icon {
  position: relative;
  flex: 0 0 auto;
  width: 1rem;
  height: 2px;
  background: currentColor;
}
.masthead-nav-toggle-icon::before,
.masthead-nav-toggle-icon::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  height: 2px;
  background: currentColor;
}
.masthead-nav-toggle-icon::before {
  top: -5px;
}
.masthead-nav-toggle-icon::after {
  top: 5px;
}
.masthead-nav-disclosure[open] .masthead-nav-toggle-icon {
  background: transparent;
}
.masthead-nav-disclosure[open] .masthead-nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}
.masthead-nav-disclosure[open] .masthead-nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}
/* toggle=icon: the word leaves the box, never the accessibility tree - never
   display: none. With no word in it the box needs a square floor. */
.masthead-nav--icon .masthead-nav-toggle {
  justify-content: center;
  min-width: var(--masthead-nav-tap);
}
.masthead-nav--icon .masthead-nav-toggle-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---- the menu: whatever list sits inside the nav landmark ---- */
.masthead-nav-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}
.masthead-nav-links li {
  margin: 0;
}
.masthead-nav-links a,
.masthead-nav-links button {
  display: flex;
  align-items: center;
  min-height: var(--masthead-nav-tap);
  margin: 0;
  padding: var(--space-2) 0;
  border: 0;
  background: none;
  color: inherit;
  font-family: var(--font-heading);
  font-size: calc(1rem * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  text-align: start;
  text-decoration: none;
  cursor: pointer;
}
.masthead-nav-links a[href]:hover,
.masthead-nav-links button:hover {
  text-decoration: underline;
  text-underline-offset: 0.3em;
}
/* A parent with children and no URL of its own arrives as an <a> with no
   href. It is a label, not a link, so it must not offer a pointer. */
.masthead-nav-links li:has(> ul) > a:not([href]) {
  cursor: default;
}
.masthead-nav-links ul ul {
  padding-inline-start: var(--space-4);
  border-inline-start: 1px solid var(--masthead-nav-edge);
}
.masthead-nav-links ul ul a,
.masthead-nav-links ul ul button {
  font-size: calc(0.9375rem * var(--type-scale, 1));
  font-weight: 500;
}

/* ---- the tray: the menu and the controls, both inside the disclosure ---- */
/* No `display` here: one would force the tray open on --panel, which opens
   and shuts natively. Each rung turns it on where it wants it laid out. */
.masthead-nav-tray {
  flex-direction: column;
  gap: var(--space-4);
}

/* ---- login and join ---- */
.masthead-nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.masthead-nav-login {
  display: flex;
  align-items: center;
  color: inherit;
  font-family: var(--font-heading);
  font-size: calc(0.9375rem * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  text-decoration: none;
  padding-block: var(--space-2);
}
.masthead-nav-login:hover {
  text-decoration: underline;
  text-underline-offset: 0.3em;
}
.masthead-nav-join {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 auto;
  min-height: var(--masthead-nav-tap);
  padding-inline: var(--space-5);
  border-radius: var(--btn-radius);
  background: var(--masthead-nav-cta-face);
  color: var(--masthead-nav-cta-ink);
  font-family: var(--font-heading);
  font-size: calc(0.9375rem * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  text-decoration: none;
}
.masthead-nav-join:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
/* The ring is the ground's own, so one rule is right on all three. */
.masthead-nav a:focus-visible,
.masthead-nav button:focus-visible,
.masthead-nav summary:focus-visible {
  outline: 3px solid var(--masthead-nav-ring);
  outline-offset: 2px;
}

/* ---- small screens ---- */
@media (width < 60rem) {
  /* A wide wordmark at --logo-height is most of a phone across. Without this
     cap it takes the whole row and pushes the menu button onto a second one. */
  .masthead-nav-mark {
    max-width: 45%;
    min-width: var(--masthead-nav-tap);
    min-height: var(--masthead-nav-tap);
  }
  /* A button with no word in it is one tap target wide, so the mark may
     take the rest of the row. --row has no button and keeps the 45%. */
  .masthead-nav--drawer.masthead-nav--icon .masthead-nav-mark,
  .masthead-nav--panel.masthead-nav--icon .masthead-nav-mark {
    max-width: calc(100% - var(--masthead-nav-tap) - var(--space-3));
  }
  /* A long label ellipsises; border-box holds the padding inside the cap. */
  .masthead-nav-toggle {
    box-sizing: border-box;
    max-width: 100%;
  }
  .masthead-nav--labelled .masthead-nav-toggle-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  /* One button, two words, and only ever one of them in the box. */
  .masthead-nav-toggle-text--close {
    display: none;
  }
  .masthead-nav-disclosure[open] .masthead-nav-toggle-text {
    display: none;
  }
  .masthead-nav-disclosure[open] .masthead-nav-toggle-text--close {
    display: inline;
  }
  /* The controls lead the sheet, and follow the menu in the markup so the
     bar is read in the order it is drawn. --row has no sheet and is left. */
  .masthead-nav--drawer .masthead-nav-controls,
  .masthead-nav--panel .masthead-nav-controls {
    order: -1;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }
  /* A row in a menu here, not a word in the bar: it takes a menu target. */
  .masthead-nav-login {
    min-height: var(--masthead-nav-tap);
  }
  /* menu-side moves the button, and the drawer it opens, to the same edge.
     Scoped to the rungs that HAVE a button: on --row the disclosure is the
     whole menu, so ordering it puts the navigation above the brand. */
  .masthead-nav--drawer.masthead-nav--side-end .masthead-nav-disclosure,
  .masthead-nav--panel.masthead-nav--side-end .masthead-nav-disclosure {
    order: 0;
  }
  .masthead-nav--drawer.masthead-nav--side-start .masthead-nav-disclosure,
  .masthead-nav--panel.masthead-nav--side-start .masthead-nav-disclosure {
    order: -1;
  }
  /* No start margin: 45% and 55% add up exactly, so anything added breaks
     the line and drops the mark to a second row. */
  .masthead-nav--side-start .masthead-nav-mark {
    margin-inline-end: auto;
  }
  /* A join control stretched over a tablet is a bar, not a button. */
  /* Definite, not max-width: an auto margin here cancels the stretch. */
  .masthead-nav--panel .masthead-nav-controls {
    width: min(20rem, 100%);
  }
  .masthead-nav--panel.masthead-nav--menu-end .masthead-nav-controls {
    align-self: flex-end;
  }
}

/* menu=drawer: a panel fixed to the inline-end edge, over a dimmed page. */
@media (width < 60rem) {
  /* The drawer is fixed to the viewport and the button that shuts it is not,
     so a scroll parts them and leaves an open menu with no way out. Pinned on
     both sticky rungs: this is not the sticky axis and does not fold into it. */
  .masthead-nav--drawer:has(.masthead-nav-disclosure[open]) {
    position: sticky;
    inset-block-start: 0;
    z-index: 40;
  }
  /* 45% for the mark and the rest for the button, gap included, so the two
     share one row: flexbox breaks lines before it shrinks anything. */
  .masthead-nav--drawer .masthead-nav-disclosure {
    max-width: calc(55% - var(--space-3));
  }
  /* Laid out open or shut, so it has somewhere to slide FROM. Engines hide a
     closed <details> two ways, one unreachable from the child, so both are
     needed. `visibility` keeps it out of the tab order - never use opacity. */
  .masthead-nav--drawer .masthead-nav-tray {
    display: flex;
  }
  .masthead-nav--drawer .masthead-nav-disclosure::details-content {
    content-visibility: visible;
    block-size: auto;
  }
  .masthead-nav--drawer .masthead-nav-tray {
    position: fixed;
    inset-block: 0;
    z-index: 41;
    width: min(20rem, 82vw);
    overflow-y: auto;
    overscroll-behavior: contain;
    /* Block-start padding is the header's first row, computed - the button
       sits on the drawer, so anything less puts it over the first item. */
    padding: calc(var(--space-3)
                  + max(var(--masthead-nav-tap), var(--logo-height, 2.75rem))
                  + var(--space-4))
             var(--space-4) var(--space-6);
    background: var(--masthead-nav-panel-face);
    color: var(--masthead-nav-panel-ink);
    box-shadow: var(--card-shadow);
    visibility: hidden;
  }
  /* `translate` is the one place a logical property cannot carry the meaning,
     so each side states its own, and its own :dir(rtl). */
  .masthead-nav--drawer.masthead-nav--side-end .masthead-nav-tray {
    inset-inline-end: 0;
    border-inline-start: 1px solid var(--masthead-nav-edge);
    translate: 100% 0;
  }
  .masthead-nav--drawer.masthead-nav--side-end .masthead-nav-tray:dir(rtl) {
    translate: -100% 0;
  }
  .masthead-nav--drawer.masthead-nav--side-start .masthead-nav-tray {
    inset-inline-start: 0;
    border-inline-end: 1px solid var(--masthead-nav-edge);
    translate: -100% 0;
  }
  .masthead-nav--drawer.masthead-nav--side-start .masthead-nav-tray:dir(rtl) {
    translate: 100% 0;
  }
  .masthead-nav--drawer .masthead-nav-disclosure[open] .masthead-nav-tray {
    visibility: visible;
    translate: none;
  }
  /* The backdrop belongs to the disclosure: in the panel it would be inside
     the box it has to sit behind. */
  .masthead-nav--drawer .masthead-nav-disclosure::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 40;
    background: color-mix(in srgb, var(--color-scrim) 62%, transparent);
    visibility: hidden;
    opacity: 0;
  }
  .masthead-nav--drawer .masthead-nav-disclosure[open]::before {
    visibility: visible;
    opacity: 1;
  }
  /* The button stays where it was pressed, above both the backdrop and the
     panel. The panel's block-start padding keeps the first item out of it. */
  .masthead-nav--drawer .masthead-nav-disclosure[open] .masthead-nav-toggle {
    position: relative;
    z-index: 42;
  }
}

/* menu=panel: the menu drops out of the button, over what is below. */
@media (width < 60rem) {
  /* A shut <details> contains its own layout, so this sheet is laid out
     against the button until it opens - `visibility` keeps that box out. */
  .masthead-nav--panel .masthead-nav-tray {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    z-index: 20;
    max-height: 70svh;
    overflow-y: auto;
    padding: var(--space-4);
    background: var(--masthead-nav-ground);
    border-block-end: 1px solid var(--masthead-nav-edge);
    box-shadow: var(--card-shadow);
    visibility: hidden;
  }
  /* Scoped to [open], unlike the drawer's: this sheet does not slide, and a
     `display` that applied while shut would hold it open. */
  .masthead-nav--panel .masthead-nav-disclosure[open] .masthead-nav-tray {
    display: flex;
    visibility: visible;
  }
}

/* ---- menu=row: no button, the menu is a scrolling row beside the mark ---- */
@media (width < 60rem) {
  .masthead-nav--row .masthead-nav-toggle {
    display: none;
  }
  /* Both declarations open the panel: engines hide a closed <details> in two
     different ways, and one of them cannot be reached from the child. */
  .masthead-nav--row .masthead-nav-tray {
    display: flex;
  }
  .masthead-nav--row .masthead-nav-disclosure::details-content {
    content-visibility: visible;
    block-size: auto;
  }
  .masthead-nav--row .masthead-nav-mark {
    margin-inline-end: 0;
  }
  .masthead-nav--row .masthead-nav-disclosure {
    flex: 1 1 auto;
    min-width: 0;
  }
  .masthead-nav--row .masthead-nav-tray {
    gap: var(--space-2);
  }
  .masthead-nav--row .masthead-nav-links {
    min-width: 0;
  }
  .masthead-nav--row .masthead-nav-join {
    flex: 0 1 auto;
  }
  .masthead-nav--row .masthead-nav-links > ul {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: var(--space-4);
    overflow-x: auto;
  }
  .masthead-nav--row .masthead-nav-links > ul > li {
    flex: 0 0 auto;
  }
  /* One row, so a submenu cannot nest under its parent; its children run on
     beside it instead. */
  .masthead-nav--row .masthead-nav-links li:has(> ul) {
    display: flex;
    align-items: center;
    gap: var(--space-4);
  }
  .masthead-nav--row .masthead-nav-links ul ul {
    flex-direction: row;
    gap: var(--space-4);
    padding-inline-start: var(--space-4);
  }
}

/* ---- wide screens: the menu is always open and sits in the bar ---- */
@media (min-width: 60rem) {
  .masthead-nav-toggle {
    display: none;
  }
  /* Both declarations open the panel: engines hide a closed <details> in two
     different ways, and one of them cannot be reached from the child. */
  .masthead-nav-tray {
    display: flex;
  }
  .masthead-nav-disclosure::details-content {
    content-visibility: visible;
    block-size: auto;
  }
  .masthead-nav-tray {
    flex-direction: row;
    align-items: center;
    gap: var(--space-6);
  }
  .masthead-nav-links {
    flex: 1 1 auto;
    min-width: 0;
  }
  .masthead-nav-inner {
    flex-wrap: nowrap;
    gap: var(--space-6);
    padding-block: var(--space-4);
  }
  /* The mark must not shrink here: the logo is sized from its height at this
     width, so a shrinking box would let the image spill over the first menu
     item instead of taking room from it. */
  .masthead-nav-mark {
    flex: 0 0 auto;
  }
  .masthead-nav-logo {
    max-width: none;
  }
  .masthead-nav-disclosure {
    flex: 1 1 auto;
    min-width: 0;
  }
  .masthead-nav-controls {
    flex: 0 0 auto;
  }
  .masthead-nav-join {
    flex: 0 0 auto;
  }
  .masthead-nav-links > ul {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2) var(--space-5);
  }
  .masthead-nav-links > ul > li {
    position: relative;
  }
  .masthead-nav-links > ul > li > a,
  .masthead-nav-links > ul > li > button {
    min-height: 0;
    white-space: nowrap;
  }
  /* Faded rather than removed: a submenu taken out of the layout cannot be
     focused, so a keyboard could never open it. */
  .masthead-nav-links ul ul {
    position: absolute;
    top: 100%;
    inset-inline-start: 0;
    z-index: 30;
    min-width: 12rem;
    padding: var(--space-2);
    border: var(--card-border);
    border-inline-start: var(--card-border);
    border-radius: var(--card-radius);
    background: var(--masthead-nav-panel-face);
    color: var(--masthead-nav-panel-ink);
    box-shadow: var(--card-shadow);
    opacity: 0;
    pointer-events: none;
  }
  .masthead-nav-links > ul > li:hover > ul,
  .masthead-nav-links > ul > li:focus-within > ul {
    opacity: 1;
    pointer-events: auto;
  }
  /* The last two items sit nearest the edge, so their panels hang from
     their end edge instead. */
  .masthead-nav-links > ul > li:nth-last-child(-n + 2) > ul {
    inset-inline-start: auto;
    inset-inline-end: 0;
  }
  .masthead-nav-links ul ul a,
  .masthead-nav-links ul ul button {
    min-height: var(--masthead-nav-tap);
    padding-inline: var(--space-2);
  }
  /* A third level sits inside its parent's panel rather than beside it. */
  .masthead-nav-links ul ul ul {
    position: static;
    min-width: 0;
    padding: 0 0 0 var(--space-3);
    border: 0;
    border-inline-start: 1px solid var(--masthead-nav-edge);
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
  }
  /* A chevron marks the items that carry children. */
  .masthead-nav-links > ul > li:has(> ul) > a::after,
  .masthead-nav-links > ul > li:has(> ul) > button::after {
    content: "";
    display: inline-block;
    width: 0.4em;
    height: 0.4em;
    margin-inline-start: var(--space-2);
    border-inline-end: 2px solid currentColor;
    border-block-end: 2px solid currentColor;
    transform: translateY(-0.15em) rotate(45deg);
  }

  /* overflow: what happens to items that do not fit the row. */
  .masthead-nav--wrap .masthead-nav-links > ul {
    flex-wrap: wrap;
  }
  /* --more folds the items past the room into a last item the behaviour
     library builds. Without the library this rung is --wrap, so the property
     below is the whole switch. */
  .masthead-nav--more .masthead-nav-links > ul {
    --hub-overflow: more;
  }
  .masthead-nav--scroll .masthead-nav-links > ul {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    padding: var(--space-2) var(--space-3);
    mask-image: linear-gradient(to right, transparent, currentColor var(--space-3),
                                currentColor calc(100% - var(--space-3)), transparent);
  }
  .masthead-nav--scroll .masthead-nav-links > ul::-webkit-scrollbar {
    display: none;
  }
  .masthead-nav--scroll .masthead-nav-links > ul > li {
    flex: 0 0 auto;
  }
  /* A scrolling row clips anything that pops out of it, so its submenus run
     on beside their parent instead. */
  .masthead-nav--scroll .masthead-nav-links > ul > li:has(> ul) {
    display: flex;
    align-items: center;
    gap: var(--space-4);
  }
  .masthead-nav--scroll .masthead-nav-links ul ul {
    position: static;
    flex-direction: row;
    min-width: 0;
    padding: 0 0 0 var(--space-3);
    border: 0;
    border-inline-start: 1px solid var(--masthead-nav-edge);
    border-radius: 0;
    background: none;
    color: inherit;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
  }
  .masthead-nav--scroll .masthead-nav-links > ul > li:has(> ul) > a::after,
  .masthead-nav--scroll .masthead-nav-links > ul > li:has(> ul) > button::after {
    content: none;
  }

  /* submenu: --dropdown is the panel under its own item, above. --mega is one
     panel the width of the bar, its items in columns. */
  .masthead-nav--dropdown .masthead-nav-links > ul > li {
    position: relative;
  }
  .masthead-nav--mega .masthead-nav-links > ul > li {
    position: static;
  }
  .masthead-nav--mega .masthead-nav-links > ul > li > ul {
    display: block;
    inset-inline: 0;
    min-width: 0;
    padding: var(--space-5) var(--space-6);
    border-radius: 0 0 var(--card-radius) var(--card-radius);
    columns: 12rem;
    column-gap: var(--space-6);
  }
  .masthead-nav--mega .masthead-nav-links > ul > li > ul > li {
    break-inside: avoid;
  }
  .masthead-nav--mega .masthead-nav-links > ul > li > ul a,
  .masthead-nav--mega .masthead-nav-links > ul > li > ul button {
    padding-inline: 0;
  }

  /* layout=inline - mark, menu, controls, one row. */
  .masthead-nav--inline .masthead-nav-inner {
    justify-content: space-between;
  }
  .masthead-nav--inline .masthead-nav-links > ul {
    justify-content: flex-start;
  }

  /* layout=centred - mark on its own line, menu centred under it, controls
     parked in the corner so the mark stays optically centred. */
  .masthead-nav--centred .masthead-nav-inner {
    flex-wrap: wrap;
    gap: var(--space-3);
    padding-block: var(--space-5);
  }
  .masthead-nav--centred .masthead-nav-mark {
    margin-inline: auto;
  }
  .masthead-nav--centred .masthead-nav-disclosure {
    flex: 1 0 100%;
  }
  /* Centred by auto margins on the end items, not justify-content: a row
     wider than its box centres by pushing its first items off the left edge,
     where no scroll can reach them. */
  .masthead-nav--centred .masthead-nav-links > ul > li:first-child {
    margin-inline-start: auto;
  }
  .masthead-nav--centred .masthead-nav-links > ul > li:last-child {
    margin-inline-end: auto;
  }
  .masthead-nav--centred .masthead-nav-controls {
    position: absolute;
    inset-block-start: var(--space-5);
    inset-inline-end: var(--space-4);
  }

  /* Last in the block on purpose: it has to outrank --centred's taller
     padding, and the two selectors weigh the same. */
  .masthead-nav--pinned .masthead-nav-inner,
  .masthead-nav--compact .masthead-nav-inner {
    padding-block: var(--space-3);
  }
  .masthead-nav--pinned.masthead-nav--centred .masthead-nav-controls,
  .masthead-nav--compact.masthead-nav--centred .masthead-nav-controls {
    inset-block-start: var(--space-3);
  }
}

/* sticky=compact: once the page has scrolled, the bar tightens and the mark
   comes down a fifth. The behaviour library sets the attribute. */
.masthead-nav--compact[data-hub-shrink="scrolled"] .masthead-nav-inner {
  padding-block: var(--space-2);
}
.masthead-nav--compact[data-hub-shrink="scrolled"] .masthead-nav-logo {
  height: calc(var(--logo-height, 2.75rem) * 0.8);
}

/* ---- nav=minimal: no menu, the mark and the controls at every width ---- */
.masthead-nav--full .masthead-nav-links {
  display: block;
}
.masthead-nav--minimal .masthead-nav-links {
  display: none;
}
.masthead-nav--minimal .masthead-nav-tray {
  justify-content: flex-end;
}
/* These outweigh the menu rungs' rules, which name two classes and the
   tray: this rung has no sheet to slide, drop or scroll. */
@media (width < 60rem) {
  .masthead-nav--minimal .masthead-nav-toggle {
    display: none;
  }
  .masthead-nav--minimal .masthead-nav-inner .masthead-nav-disclosure {
    order: 0;
    flex: 0 0 auto;
    max-width: none;
  }
  .masthead-nav--minimal .masthead-nav-inner .masthead-nav-disclosure::details-content {
    content-visibility: visible;
    block-size: auto;
  }
  .masthead-nav--minimal .masthead-nav-inner .masthead-nav-disclosure::before {
    content: none;
  }
  .masthead-nav--minimal .masthead-nav-disclosure .masthead-nav-tray {
    display: flex;
    position: static;
    width: auto;
    max-height: none;
    padding: 0;
    border: 0;
    background: none;
    box-shadow: none;
    visibility: visible;
    translate: none;
  }
  .masthead-nav--minimal .masthead-nav-controls {
    order: 0;
    width: auto;
    flex-direction: row;
    align-items: center;
  }
  /* The join control is the point of a page with no menu; the login link
     returns above 60rem. */
  .masthead-nav--minimal .masthead-nav-login {
    display: none;
  }
}

/* ---- menu-align: which edge the small-screen menu is set against ----
   Below 60rem only: above it `layout` already decides where the menu sits. */
@media (width < 60rem) {
  .masthead-nav--menu-start .masthead-nav-tray {
    text-align: start;
  }
  .masthead-nav--menu-start .masthead-nav-links a,
  .masthead-nav--menu-start .masthead-nav-links button,
  .masthead-nav--menu-start .masthead-nav-login {
    justify-content: flex-start;
  }
  .masthead-nav--menu-centre .masthead-nav-tray {
    text-align: center;
  }
  .masthead-nav--menu-centre .masthead-nav-links a,
  .masthead-nav--menu-centre .masthead-nav-links button,
  .masthead-nav--menu-centre .masthead-nav-login {
    justify-content: center;
  }
  .masthead-nav--menu-centre .masthead-nav-links ul ul {
    align-items: center;
    padding-inline: 0;
    border-inline: none;
  }
  .masthead-nav--menu-end .masthead-nav-tray {
    text-align: end;
  }
  .masthead-nav--menu-end .masthead-nav-links a,
  .masthead-nav--menu-end .masthead-nav-links button,
  .masthead-nav--menu-end .masthead-nav-login {
    justify-content: flex-end;
  }
  /* The rule moves with the items, or it is left down the empty side. */
  .masthead-nav--menu-end .masthead-nav-links ul ul {
    align-items: flex-end;
    padding-inline: 0 var(--space-4);
    border-inline: none;
    border-inline-end: 1px solid var(--masthead-nav-edge);
  }
}

/* No easing keyword follows --transition-fast below: brands ship that token
   with an easing in it, and a second keyword makes the declaration invalid. */
@media (prefers-reduced-motion: no-preference) {
  .masthead-nav-toggle-icon,
  .masthead-nav-toggle-icon::before,
  .masthead-nav-toggle-icon::after {
    transition: transform var(--transition-fast),
                background var(--transition-fast),
                top var(--transition-fast);
  }
  .masthead-nav-links ul ul {
    transition: opacity var(--transition-fast);
  }
  /* `visibility` is in the list so the panel stays on screen while it leaves. */
  .masthead-nav--drawer .masthead-nav-tray {
    transition: translate var(--transition-fast),
                visibility var(--transition-fast);
  }
  .masthead-nav--drawer .masthead-nav-disclosure::before {
    transition: opacity var(--transition-fast),
                visibility var(--transition-fast);
  }
  .masthead-nav--compact .masthead-nav-inner {
    transition: padding var(--transition-fast);
  }
  .masthead-nav--compact .masthead-nav-logo {
    transition: height var(--transition-fast);
  }
}
/* Belt and braces if a brand reintroduces a transition on these. */
@media (prefers-reduced-motion: reduce) {
  .masthead-nav-toggle-icon,
  .masthead-nav-toggle-icon::before,
  .masthead-nav-toggle-icon::after {
    transition: none;
  }
  .masthead-nav-links ul ul {
    transition: none;
  }
  .masthead-nav--drawer .masthead-nav-tray,
  .masthead-nav--drawer .masthead-nav-disclosure::before,
  .masthead-nav--compact .masthead-nav-inner,
  .masthead-nav--compact .masthead-nav-logo {
    transition: none;
  }
}

/* ---- hero-stated v4 ---- */
/* hero-stated v1 - tokens only, selectors prefixed */
/* Each ground names its own ink, and every rule below reads the pair rather
   than a token, so nothing here knows which ground it is on. */
.hero-stated--plain {
  --hero-stated-ground: var(--color-bg);
  --hero-stated-ink: var(--color-text-soft);
  --hero-stated-title-ink: var(--color-heading);
  --hero-stated-btn-face: var(--color-primary);
  --hero-stated-btn-ink: var(--color-on-primary);
  --hero-stated-ring: var(--color-focus);
}
.hero-stated--brand {
  --hero-stated-ground: var(--color-primary);
  --hero-stated-ink: var(--color-on-primary);
  --hero-stated-title-ink: var(--color-on-primary);
  --hero-stated-btn-face: var(--color-on-primary);
  --hero-stated-btn-ink: var(--color-primary);
  --hero-stated-ring: var(--color-on-primary);
}
.hero-stated--deep {
  --hero-stated-ground: var(--color-scrim);
  --hero-stated-ink: var(--color-on-scrim);
  --hero-stated-title-ink: var(--color-on-scrim);
  --hero-stated-btn-face: var(--color-primary);
  --hero-stated-btn-ink: var(--color-on-primary);
  --hero-stated-ring: var(--color-on-scrim);
}
.hero-stated {
  padding-block: var(--space-12);
  padding-inline: var(--space-4);
  background: var(--hero-stated-ground);
  color: var(--hero-stated-ink);
}
.hero-stated-inner {
  max-width: var(--container-max);
  margin-inline: auto;
}
.hero-stated-eyebrow {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 var(--space-4);
}
.hero-stated-title {
  font-family: var(--font-heading);
  /* On the plain ground this is --color-heading, which the contract promises
   at the large-text bar against --color-bg; the clamp floor is 40px. On the
   other two grounds it is that ground's own ink. */
  color: var(--hero-stated-title-ink);
  font-size: calc(clamp(2.5rem, 7vw, 4.5rem) * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  letter-spacing: calc(-0.03em + var(--heading-tracking, 0) * 1em);
  line-height: calc(1.02 * var(--heading-leading, 1));
  max-width: 10.75em;
  margin: 0 0 var(--space-5);
  text-wrap: balance;
}
.hero-stated-sub {
  font-size: clamp(1.0625rem, 1.7vw, 1.25rem);
  line-height: 1.55;
  max-width: 46ch;
  margin: 0 0 var(--space-6);
}
.hero-stated-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* 52px: on a page whose opener carries no image, this is what the eye
   lands on after the words. */
  min-height: 52px;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--btn-radius);
  background: var(--hero-stated-btn-face);
  color: var(--hero-stated-btn-ink);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  text-decoration: none;
}
.hero-stated-btn:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
/* The ring is the ground's own, so one rule is right on all three. */
.hero-stated-btn:focus-visible {
  outline: 3px solid var(--hero-stated-ring);
  outline-offset: 4px;
}
.hero-stated--centred .hero-stated-inner {
  text-align: center;
}
.hero-stated--centred .hero-stated-title,
.hero-stated--centred .hero-stated-sub {
  margin-inline: auto;
}
@media (min-width: 48rem) {
  .hero-stated {
    padding-inline: var(--space-8);
  }
}

/* ---- feature-panels v5 ---- */
/* feature-panels v1 - tokens only, selectors prefixed */
.feature-panels {
  --feature-panels-min: 20rem;
  --feature-panels-height: clamp(24rem, 46vh, 34rem);
  padding-block: var(--space-8) 0;
}
.feature-panels-head {
  max-width: var(--container-max);
  margin: 0 auto var(--space-6);
  padding-inline: var(--space-4);
}
.feature-panels-eyebrow {
  color: var(--color-text-soft);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 var(--space-3);
}
.feature-panels-title {
  font-family: var(--font-heading);
  /* Page ground and a clamp floor above 24px: both halves of the heading
   token's contract. Keep both if you edit it. */
  color: var(--color-heading);
  font-size: calc(clamp(1.75rem, 3.4vw, 2.75rem) * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  letter-spacing: calc(-0.02em + var(--heading-tracking, 0) * 1em);
  line-height: calc(1.15 * var(--heading-leading, 1));
  margin: 0 0 var(--space-4);
  text-wrap: balance;
}
.feature-panels-intro {
  color: var(--color-text-soft);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 46ch;
  margin: 0;
}
/* Edge to edge, no gutters and no radius: the panels are the section. */
.feature-panels-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--feature-panels-min), 1fr));
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}
/* Each panel names a ground, and its ink is the one the contract states
   against that ground. Everything below reads both through these two
   properties, which is why nothing here needs to know which panel it is. */
.feature-panels-item--light {
  --feature-panels-ground: var(--color-surface-soft);
  --feature-panels-ink: var(--color-text);
}
.feature-panels-item--brand {
  --feature-panels-ground: var(--color-primary);
  --feature-panels-ink: var(--color-on-primary);
}
.feature-panels-item--deep {
  --feature-panels-ground: var(--color-scrim);
  --feature-panels-ink: var(--color-on-scrim);
}
.feature-panels-item {
  display: flex;
  flex-direction: column;
  min-height: var(--feature-panels-height);
  padding: var(--space-6);
  background: var(--feature-panels-ground);
  color: var(--feature-panels-ink);
}
.feature-panels-mark {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 var(--space-8);
}
.feature-panels-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 2rem;
  height: 2rem;
  border-radius: var(--chip-radius);
  /* The mark's own ground is the panel ink at low strength, so it reads on
   every one of the three without needing a fourth pair. */
  background: color-mix(in srgb, var(--feature-panels-ink) 16%, transparent);
}
.feature-panels-icon svg {
  display: block;
  width: 1.125rem;
  height: 1.125rem;
}
.feature-panels-claim {
  font-family: var(--font-heading);
  /* The panel ink, never --color-heading: every panel paints its own ground
   and that token is promised against --color-bg alone. */
  color: var(--feature-panels-ink);
  font-size: calc(clamp(1.5rem, 2.6vw, 2.125rem) * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  letter-spacing: calc(-0.02em + var(--heading-tracking, 0) * 1em);
  line-height: calc(1.15 * var(--heading-leading, 1));
  margin: 0;
  text-wrap: balance;
}
/* margin-top:auto pins the link to the panel floor, so panels holding claims
   of unequal length still line their links up across the row. */
.feature-panels-action {
  margin: auto 0 0;
  padding-top: var(--space-6);
}
.feature-panels-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  /* 44px target on a link that carries no padding of its own. */
  min-height: 44px;
  color: var(--feature-panels-ink);
  font-weight: 700;
  /* Underlined, not tinted: colour is never the only thing marking a link,
   and on three different grounds a tint could not be either. */
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
.feature-panels-arrow {
  transition: translate var(--transition-fast) ease-out;
}
.feature-panels-link:hover .feature-panels-arrow,
.feature-panels-link:focus-visible .feature-panels-arrow {
  translate: 0.25rem 0;
}
/* The ring is the panel's own ink, which is by definition the one colour the
   contract promises against that panel's ground - so one rule is guaranteed
   on all three, where --color-focus would not be. See patterns/feature-panels/README.md. */
.feature-panels-link:focus-visible {
  outline: 3px solid var(--feature-panels-ink);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  .feature-panels-arrow {
    transition: none;
  }
}
@media (min-width: 48rem) {
  .feature-panels-head {
    padding-inline: var(--space-6);
  }
  .feature-panels-item {
    padding: var(--space-8);
  }
}

/* ---- comparison-table v4 ---- */
/* comparison-table v2 - tokens only, selectors prefixed */
.comparison-table {
  padding-block: var(--space-8);
  padding-inline: var(--space-4);
  background: var(--color-bg);
  color: var(--color-text);
}
.comparison-table-inner {
  max-width: var(--container-max, 72rem);
  margin-inline: auto;
}
.comparison-table-title {
  font-family: var(--font-heading);
  color: var(--color-heading, var(--color-text));
  font-size: calc(clamp(1.75rem, 3vw, 2.5rem) * var(--type-scale, 1));
  line-height: calc(1.15 * var(--heading-leading, 1));
  letter-spacing: calc(-0.02em + var(--heading-tracking, 0) * 1em);
  margin: 0 0 var(--space-3);
  text-wrap: balance;
}
.comparison-table-intro {
  color: var(--color-text-soft);
  font-size: 1.0625rem;
  line-height: 1.55;
  max-width: 52ch;
  margin: 0 0 var(--space-6);
}
/* overflow on both axes, not overflow-x. Setting only one makes the other
   scrollable anyway, and the sticky head then sticks to a container that
   never scrolls, so it looks as though it does not work. */
.comparison-table-scroll {
  overflow: auto;
  border-radius: var(--card-radius);
}
.comparison-table-scroll:focus-visible {
  outline: 3px solid var(--color-focus, var(--color-primary));
  outline-offset: 3px;
}
/* separate, not collapse: with collapsed borders the table paints the border
   rather than the cell, and a sticky head loses its bottom edge as it moves.
   The box-shadow below draws that edge instead. */
.comparison-table-grid {
  border-collapse: separate;
  border-spacing: 0;
  min-inline-size: 40rem;
  inline-size: 100%;
  text-align: left;
}
.comparison-table-caption {
  caption-side: top;
  text-align: left;
  color: var(--color-text-soft);
  font-size: 0.9375rem;
  line-height: 1.5;
  padding-block-end: var(--space-3);
}
.comparison-table-corner,
.comparison-table-head {
  background: var(--color-surface, var(--color-bg));
  box-shadow: inset 0 -1px 0 var(--color-rule, color-mix(in srgb, var(--color-text) 18%, transparent));
  padding: var(--space-4) var(--space-5);
  vertical-align: bottom;
  text-align: left;
}
/* The criterion column stays put while the values scroll sideways. Without
   it a phone reader ends up looking at three columns of answers with no
   question against them. */
.comparison-table-criterion,
.comparison-table-corner {
  position: sticky;
  inset-inline-start: 0;
  background: var(--color-bg);
  z-index: 1;
}
.comparison-table-corner {
  background: var(--color-surface, var(--color-bg));
  z-index: 2;
}
.comparison-table-name {
  display: block;
  font-family: var(--font-heading);
  color: var(--color-text);
  font-size: calc(1.125rem * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  line-height: calc(1.25 * var(--heading-leading, 1));
}
/* The word says which column is recommended; the tint only repeats it.
   Never ship one without the other. */
.comparison-table-flag {
  display: inline-block;
  margin-block-start: var(--space-2);
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.comparison-table-head--recommended,
.comparison-table-cell--recommended {
  background: color-mix(in srgb, var(--color-primary) 10%, var(--color-bg));
}
.comparison-table-criterion {
  font-weight: 700;
  color: var(--color-text);
  padding: var(--space-4) var(--space-5);
  border-block-end: 1px solid var(--color-rule, color-mix(in srgb, var(--color-text) 18%, transparent));
  vertical-align: top;
}
.comparison-table-cell {
  color: var(--color-text);
  padding: var(--space-4) var(--space-5);
  border-block-end: 1px solid var(--color-rule, color-mix(in srgb, var(--color-text) 18%, transparent));
  vertical-align: top;
  line-height: 1.5;
}
.comparison-table-row:last-child .comparison-table-criterion,
.comparison-table-row:last-child .comparison-table-cell {
  border-block-end: 0;
}
@media (min-width: 48rem) {
  .comparison-table {
    padding-inline: var(--space-8);
  }
  /* svh, not vh: the mobile address bar would eat into a vh height. The
     vertical scroller exists only where the table is tall enough to want a
     sticky head; below this width it would nest a scroller inside the page. */
  .comparison-table-scroll {
    max-block-size: 80svh;
  }
  .comparison-table-corner,
  .comparison-table-head {
    position: sticky;
    inset-block-start: 0;
  }
}

/* ---- faq-details v6 ---- */
/* faq-details v3 - tokens only, selectors prefixed.
   No script anywhere: <details>/<summary> gives keyboard operation, the
   expanded/collapsed announcement and find-in-page for free. */
.faq-details {
  padding-block: var(--space-8);
}
/* Keep the measure: answers read badly at full width. */
.faq-details-inner {
  width: min(100% - 2 * var(--space-4), 48rem);
  margin-inline: auto;
}
.faq-details-title {
  font-family: var(--font-heading);
  color: var(--color-heading);
  font-size: calc(clamp(1.75rem, 1rem + 2vw, 2.25rem) * var(--type-scale, 1));
  margin: 0 0 var(--space-6);
}
/* A rule under every item, plus one above the first. */
.faq-details-item {
  border-block-end: 1px solid var(--color-rule);
}
.faq-details-item:first-of-type {
  border-block-start: 1px solid var(--color-rule);
}
.faq-details-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
  cursor: pointer;
  font-family: var(--font-heading);
  /* --color-text: this is not large text. */
  color: var(--color-text);
  /* Both lines are needed to drop the default triangle. */
  list-style: none;
}
.faq-details-summary::-webkit-details-marker {
  display: none;
}
/* Required: removing the marker above removes the focus affordance some
   browsers hang off it. */
.faq-details-summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}
.faq-details-question {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
}
/* The indicator is a shape, not a glyph and never colour alone. */
.faq-details-icon {
  position: relative;
  flex: 0 0 auto;
  width: var(--space-5);
  height: var(--space-5);
}
.faq-details-icon::before,
.faq-details-icon::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 50%;
  height: 2px;
  margin-block-start: -1px;
  background: var(--color-text-soft);
}
.faq-details-icon::after {
  transform: rotate(90deg);
}
/* A state change, not an animation: it applies under reduced motion too. */
.faq-details-item[open] .faq-details-icon {
  transform: rotate(45deg);
}
.faq-details-answer {
  padding-block-end: var(--space-4);
  padding-inline-end: var(--space-6);
  color: var(--color-text-soft);
}
.faq-details-answer p {
  margin: 0 0 var(--space-3);
  line-height: 1.65;
}
.faq-details-answer p:last-child {
  margin-block-end: 0;
}
/* Motion is opt-in and only ever eases a state the page already reached. */
@media (prefers-reduced-motion: no-preference) {
  .faq-details-icon {
    transition: transform var(--transition-fast) ease-out;
  }
  .faq-details-item[open] .faq-details-answer {
    animation: faq-details-open var(--transition-fast) ease-out;
  }
}
@keyframes faq-details-open {
  from {
    opacity: 0;
    transform: translateY(-0.25rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* Belt and braces if a brand reintroduces a transition on these. */
@media (prefers-reduced-motion: reduce) {
  .faq-details-icon {
    transition: none;
  }
  .faq-details-answer {
    animation: none;
  }
}

/* ---- cta-band v5 ---- */
/* cta-band - tokens only, selectors prefixed */

/* Each rung names its own ground, ink, control pair and ring, and every rule
   below reads those rather than a token, so nothing here knows which ground it
   is on. The ring is per rung and not --color-focus everywhere: on --brand and
   --deep that token is a brand colour landing on a brand colour, and it
   disappears into the band on every sample brand. See patterns/cta-band/README.md. */
.cta-band--plain {
  --cta-band-ground: var(--color-bg);
  --cta-band-ink: var(--color-text);
  --cta-band-btn-face: var(--color-primary);
  --cta-band-btn-ink: var(--color-on-primary);
  --cta-band-ring: var(--color-focus);
}
.cta-band--soft {
  --cta-band-ground: var(--color-surface-soft);
  --cta-band-ink: var(--color-text);
  --cta-band-btn-face: var(--color-primary);
  --cta-band-btn-ink: var(--color-on-primary);
  --cta-band-ring: var(--color-focus);
}
.cta-band--brand {
  --cta-band-ground: var(--color-primary);
  --cta-band-ink: var(--color-on-primary);
  --cta-band-btn-face: var(--color-on-primary);
  --cta-band-btn-ink: var(--color-primary);
  --cta-band-ring: var(--color-on-primary);
}
.cta-band--deep {
  --cta-band-ground: var(--color-scrim);
  --cta-band-ink: var(--color-on-scrim);
  --cta-band-btn-face: var(--color-on-scrim);
  --cta-band-btn-ink: var(--color-scrim);
  --cta-band-ring: var(--color-on-scrim);
}
.cta-band {
  padding-block: var(--space-12);
  padding-inline: var(--space-4);
  background: var(--cta-band-ground);
  color: var(--cta-band-ink);
  text-align: center;
}
.cta-band-inner {
  max-width: var(--container-max);
  margin-inline: auto;
}
.cta-band-eyebrow {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 var(--space-4);
}
/* Not --color-heading: that token is promised against --color-bg, and three of
   the four rungs paint a ground of their own. */
.cta-band-title {
  font-family: var(--font-heading);
  color: var(--cta-band-ink);
  font-size: calc(clamp(2rem, 4.5vw, 3.25rem) * var(--type-scale, 1));
  font-weight: var(--weight-display, 700);
  letter-spacing: calc(-0.02em + var(--heading-tracking, 0) * 1em);
  line-height: calc(1.1 * var(--heading-leading, 1));
  margin: 0 0 var(--space-4);
  text-wrap: balance;
}
.cta-band-lead {
  font-size: 1.0625rem;
  line-height: 1.6;
  max-width: 46ch;
  margin: 0 auto var(--space-6);
}
.cta-band-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* 48px target, above the 44px AAA floor. */
  min-height: 48px;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--btn-radius);
  background: var(--cta-band-btn-face);
  color: var(--cta-band-btn-ink);
  font-weight: 700;
  line-height: 1.5;
  text-decoration: none;
}
.cta-band-btn:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
/* The offset leaves a band-coloured gap, putting the guaranteed pair either
   side of the ring. */
.cta-band-btn:focus-visible {
  outline: 3px solid var(--cta-band-ring);
  outline-offset: 4px;
}

/* ---- colophon v2 ---- */
/* colophon v2 - tokens only, selectors prefixed */
.colophon {
  border-top: 1px solid var(--color-rule);
  padding-block: var(--space-8) var(--space-6);
  font-size: 0.875rem;
  color: var(--color-text-soft);
}
.colophon--plain {
  background: var(--color-bg);
}
.colophon--soft {
  background: var(--color-surface);
}
.colophon-inner {
  width: 92%;
  max-width: var(--container-max);
  margin-inline: auto;
  display: grid;
  gap: var(--space-4);
}
/* layout: --line is the centred stack at every width; --columns spreads the
   three groups across the row from 60rem up and is the same stack below. */
.colophon--line .colophon-inner,
.colophon--columns .colophon-inner {
  justify-items: center;
  text-align: center;
}
/* mark: the brand mark above everything else, or nothing at all. */
.colophon--none .colophon-mark {
  display: none;
}
.colophon--logo .colophon-mark {
  display: inline-flex;
  margin-block-end: var(--space-2);
}
/* The set height is the floor: `height: auto` under a `max-height` alone
   resolves a viewBox-only SVG to 0x0. A tenth over the header's height, so
   the footer mark reads as a signature and not a repeat of the bar. */
.colophon-logo {
  display: block;
  width: auto;
  height: calc(var(--logo-height, 2.75rem) * 1.1);
  max-width: 100%;
  object-fit: contain;
}
/* The platform decides the menu's own markup, so its rules reach it by
   descent rather than by a generated class name. */
.colophon-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-6);
}
.colophon-legal {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-6);
}
.colophon-menu a,
.colophon-legal a {
  color: var(--color-text-soft);
  text-decoration: none;
}
.colophon-menu a:hover,
.colophon-legal a:hover {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
.colophon a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}
.colophon-copyright {
  margin: 0;
}
@media (min-width: 60rem) {
  .colophon--columns .colophon-inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    justify-items: start;
    align-items: start;
    text-align: start;
    gap: var(--space-6) var(--space-8);
  }
  /* A brand with no managed footer menu deletes the nav: two columns then,
     not two columns and a hole. */
  .colophon--columns .colophon-inner:not(:has(.colophon-menu)) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .colophon--columns .colophon-mark {
    grid-column: 1 / -1;
  }
  .colophon--columns .colophon-menu ul,
  .colophon--columns .colophon-legal {
    flex-direction: column;
    justify-content: flex-start;
    gap: var(--space-2);
  }
  .colophon--columns .colophon-copyright {
    justify-self: end;
    text-align: end;
  }
}

/* ---- cta-assurance v2 - carried for hero-stated's assurance slot ---- */
/* cta-assurance v1 - tokens only, selectors prefixed */
/* Sets no colour: it inherits the ink above it. See patterns/cta-assurance/README.md. */
.cta-assurance {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.5;
}
.cta-assurance-item + .cta-assurance-item::before {
  content: "";
  display: inline-block;
  width: 0.25rem;
  height: 0.25rem;
  margin-inline-end: var(--space-3);
  border-radius: 50%;
  background: currentColor;
  vertical-align: middle;
}
/* crumb-trail v1 - tokens only, selectors prefixed */
.crumb-trail {
  box-sizing: border-box;
  margin-inline: auto;
  padding-block: var(--space-3) var(--space-2);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-soft);
}
.crumb-trail--page {
  width: min(100% - 2 * var(--space-4), var(--container-max));
}
/* 52rem is the article column, held by the article masthead, the contents
   list and the author block. Any other number puts a second left edge on
   the page. */
.crumb-trail--column {
  width: min(100% - 2 * var(--space-4), 52rem);
}
.crumb-trail-link {
  color: var(--color-text-soft);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
.crumb-trail-link:hover {
  color: var(--color-text);
}
.crumb-trail-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}
.crumb-trail-separator {
  color: var(--color-text-soft);
}
.crumb-trail-current {
  color: var(--color-text);
  font-weight: 600;
}