/*
 * The public website's stylesheet (0048-public-website FR-010). Every colour is a frontiers-brand role from
 * brand.css (loaded first) or a mix of two of them; no colour literal is stated here.
 */
:root {
  --ink: var(--brand-text);
  --paper: var(--brand-paper);
  --surface: var(--brand-surface);
  --muted: color-mix(in srgb, var(--brand-text) 62%, var(--brand-surface));
  --rule: color-mix(in srgb, var(--brand-text) 14%, var(--brand-surface));
  --wash: color-mix(in srgb, var(--brand-paper) 55%, var(--brand-surface));
  --sans: var(--brand-font-sans), "Inter", "Inter Fallback", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: var(--brand-font-serif), "Source Serif 4", "Source Serif Fallback", Georgia, serif;
  /* a cover's mockup carries its own cast shadow, drawn for a light surface; a dark theme gives it a faint halo of the surface color instead */
  --cover-halo: transparent;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --wrap: 72rem;
  --gap: clamp(1rem, 2.5vw, 1.75rem);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--surface); color: var(--ink); font: 400 1.0625rem/1.6 var(--sans); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand-link); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.015em; line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
code, pre, kbd { font-family: var(--mono); font-size: .9em; }
pre { background: var(--wash); border: 1px solid var(--rule); padding: 1rem; overflow-x: auto; white-space: pre-wrap; }
blockquote { margin: 1.25rem 0; padding: .25rem 0 .25rem 1.25rem; border-left: 3px solid var(--brand-tertiary); font-family: var(--serif); font-size: 1.15rem; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: .5rem .75rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; }
.table { overflow-x: auto; margin: 0 0 1.25rem; }
.visually-hidden, .skip:not(:focus) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip:focus { position: absolute; top: .5rem; left: .5rem; background: var(--surface); padding: .5rem 1rem; z-index: 10; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gap); }

/* masthead */
.masthead { border-bottom: 1px solid var(--rule); background: var(--surface); position: sticky; top: 0; z-index: 5; }
.masthead__inner { max-width: var(--wrap); margin: 0 auto; padding: .85rem var(--gap); display: flex; align-items: center; gap: 2rem; }
.brand img { width: 150px; height: auto; }
.nav { display: flex; flex-wrap: wrap; gap: .25rem 1.35rem; margin-left: auto; }
.nav a { color: var(--ink); text-decoration: none; font-size: .95rem; padding: .25rem 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--brand-tertiary); }
.menu { display: none; margin-left: auto; font: inherit; background: none; border: 1px solid var(--rule); padding: .35rem .8rem; color: var(--ink); }
@media (max-width: 52rem) {
  .menu { display: block; }
  .nav { display: none; width: 100%; flex-direction: column; margin: 0; padding-top: .75rem; }
  .masthead__inner { flex-wrap: wrap; }
  .nav.is-open { display: flex; }
}

/* breadcrumb band: part of the sticky masthead, so the trail stays in view while the page scrolls */
.crumbband { border-top: 1px solid var(--rule); background: var(--wash); }
.crumbband__inner { max-width: var(--wrap); margin: 0 auto; padding: .5rem var(--gap); }
.crumbs { font-size: .85rem; line-height: 1.4; color: var(--muted); min-width: 0; }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 .5rem; }
.crumbs li { display: flex; align-items: baseline; gap: .5rem; min-width: 0; }
.crumbs li + li::before { content: "\203A"; color: var(--muted); }
.crumbs li > a, .crumbs li > [aria-current] { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.crumbs li > a { max-width: 14rem; color: var(--muted); text-decoration: none; }
.crumbs li > a:hover { color: var(--ink); text-decoration: underline; }
.crumbs li > [aria-current] { max-width: 22rem; color: var(--ink); }
/* A long trail folds the crumbs above the current page's nearest parents into the … menu: the last two stay in view on a
   narrow screen, the last three on a wide one (data-tail-lg). The page decides whether a trail folds; this decides what hides. */
.crumbs li.crumbs__fold { display: none; }
.crumbs[data-fold] li.crumbs__fold { display: flex; }
.crumbs[data-fold] li:not(:first-child, .crumbs__fold):nth-last-child(n + 3) { display: none; }
@media (min-width: 48rem) {
  .crumbs[data-tail-lg="3"] li:not(:first-child, .crumbs__fold):nth-last-child(3) { display: flex; }
  .crumbs[data-tail-lg="3"] .crumbs__menu [data-d="2"] { display: none; }
}
.crumbs__more { font: inherit; line-height: 1; background: none; border: 0; padding: 0 .3rem; color: var(--muted); cursor: pointer; anchor-name: --crumbs-more; }
.crumbs__more:hover, .crumbs__more:has(+ :popover-open) { color: var(--ink); }
.crumbs__menu { position: fixed; inset: auto; margin: .4rem 0 0; padding: .3rem 0; min-width: 14rem; max-width: min(24rem, calc(100vw - 2rem));
  border: 1px solid var(--rule); background: var(--surface); color: var(--ink); box-shadow: 0 2px 10px color-mix(in srgb, var(--brand-text) 10%, transparent);
  position-anchor: --crumbs-more; top: anchor(bottom); left: anchor(left); }
.crumbs__menu a, .crumbs__menu span { display: block; padding: .4rem 1rem; color: var(--muted); text-decoration: none; }
.crumbs__menu a:hover { color: var(--ink); background: var(--wash); }

/* page heads and sections */
.page-head { background: var(--paper); border-bottom: 1px solid var(--rule); padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2rem, 4vw, 3rem); }
.page-head .lede { max-width: 46rem; }
.kicker { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 600; color: var(--brand-tertiary); margin: 0 0 .75rem; }
.lede { font-size: 1.2rem; color: var(--muted); max-width: 44rem; }
.section { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.section + .section { border-top: 1px solid var(--rule); }
.section--paper { background: var(--paper); }
.section-head { margin-bottom: 1.75rem; }
.section-head__row { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.section-head h2 { margin: 0; }
.more { font-size: .95rem; text-decoration: none; font-weight: 500; white-space: nowrap; }

/* home */
.hero { background: var(--paper); border-bottom: 1px solid var(--rule); }
.hero__inner { max-width: var(--wrap); margin: 0 auto; padding: clamp(2rem, 5vw, 3.5rem) var(--gap); display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
.hero h1 { font-size: clamp(2.5rem, 5.4vw, 4.4rem); margin-bottom: .35em; }
.hero__art img { width: 100%; border: 1px solid var(--rule); }
.hero__art figcaption { font-size: .8rem; color: var(--muted); margin-top: .5rem; }
@media (max-width: 52rem) { .hero__inner { grid-template-columns: 1fr; } }
.hero--picture { position: relative; isolation: isolate; overflow: hidden; background: var(--ink); border-bottom: 0; }
.hero--picture .hero__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 55%; z-index: -2; }
.hero--picture::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, color-mix(in srgb, var(--brand-text) 84%, transparent) 0%,
              color-mix(in srgb, var(--brand-text) 56%, transparent) 52%, color-mix(in srgb, var(--brand-text) 20%, transparent) 100%); }
.hero__inner--single { grid-template-columns: minmax(0, 46rem); min-height: clamp(26rem, 44vw, 32.5rem); }
.hero--picture h1, .hero--picture .kicker { color: var(--brand-surface); }
.hero--picture .lede { color: color-mix(in srgb, var(--brand-surface) 82%, transparent); }
.hero--picture .button { background: var(--brand-surface); color: var(--ink); border-color: var(--brand-surface); }
.hero--picture .button:hover { background: transparent; color: var(--brand-surface); }
.hero--picture .button--ghost { background: transparent; color: var(--brand-surface); border-color: color-mix(in srgb, var(--brand-surface) 55%, transparent); }
.hero--picture .button--ghost:hover { border-color: var(--brand-surface); }
.hero-stats { background: var(--paper); border-bottom: 1px solid var(--rule); padding: 0 0 2.5rem; }
.hero-stats .stats { margin-top: 0; position: relative; top: -1.5rem; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr)); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); margin-top: 2rem; }
.stat { padding: 1rem 1.1rem; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); text-decoration: none; color: var(--ink); background: var(--surface); }
.stat:hover { background: var(--wash); }
.stat__n { display: block; font: 500 2rem/1 var(--serif); }
.stat__l { display: block; font-size: .85rem; color: var(--muted); margin-top: .35rem; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: var(--gap); }
.grid--wide { grid-template-columns: repeat(auto-fill, minmax(22rem, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--rule); padding: 1.25rem 1.35rem 1.1rem; display: flex; flex-direction: column; }
.card:hover { border-color: color-mix(in srgb, var(--brand-text) 40%, var(--brand-surface)); }
.section--paper .card { background: var(--surface); }
.card__kicker { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 0 0 .5rem; font-weight: 600; }
.card__title { font-size: 1.2rem; margin: 0 0 .5rem; }
.card__title a { color: var(--ink); text-decoration: none; }
.card__title a:hover { text-decoration: underline; }
.card__title .ext { font-family: var(--sans); font-size: .85rem; color: var(--muted); margin-left: .3rem; }
.card__text { color: var(--muted); font-size: .97rem; margin: 0 0 .75rem; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.card__meta { font-size: .83rem; color: var(--muted); margin: auto 0 0; padding-top: .5rem; }
.card__badges { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .6rem; }
.badge { display: inline-block; font-size: .72rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; padding: .2rem .5rem; border: 1px solid var(--rule); color: var(--muted); background: var(--surface); }
.badge--ok { color: var(--brand-success); border-color: color-mix(in srgb, var(--brand-success) 45%, var(--brand-surface)); }
.badge--soon { color: var(--brand-tertiary); border-color: color-mix(in srgb, var(--brand-tertiary) 45%, var(--brand-surface)); }
.badge--draft { color: var(--brand-warning); border-color: color-mix(in srgb, var(--brand-warning) 45%, var(--brand-surface)); }
.badge--info { color: var(--brand-info); border-color: color-mix(in srgb, var(--brand-info) 45%, var(--brand-surface)); }

/* covers */
.shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(10.5rem, 1fr)); gap: 2rem var(--gap); }
.shelf--row { grid-auto-flow: column; grid-template-columns: none; grid-auto-columns: minmax(9.5rem, 11rem); overflow-x: auto; padding-bottom: 1rem; scroll-snap-type: x mandatory; }
.shelf--row .cover { scroll-snap-align: start; }
.shelf__heading { grid-column: 1 / -1; margin: 1.5rem 0 -1rem; }
.shelf__heading--domain { font: 600 .8rem/1.2 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: .5rem 0 -1.25rem; display: flex; gap: .6rem; align-items: center; }
.shelf--grouped > .shelf__heading:first-child { margin-top: 0; }
/* A cover is the book's standing 3D mockup, its own shadow drawn in, on a transparent 600 by 680 canvas; on a dark theme the halo grounds it instead. */
:root[data-theme="dark"] { --cover-halo: color-mix(in srgb, var(--brand-surface) 22%, transparent); }
.cover__img { display: block; transition: transform .2s ease; }
.cover__img:hover { transform: translateY(-3px); }
.cover__img img { aspect-ratio: 600 / 680; object-fit: contain; width: 100%; height: auto; filter: drop-shadow(0 0 1.25rem var(--cover-halo)); }
.cover__blank { display: flex; aspect-ratio: 2 / 3; align-items: flex-end; padding: 1rem; background: var(--ink); color: var(--paper); font-family: var(--serif); font-size: 1.1rem; box-shadow: 0 1px 2px color-mix(in srgb, var(--brand-text) 20%, transparent), 0 10px 24px -12px color-mix(in srgb, var(--brand-text) 45%, transparent); }
.cover__title { font-size: 1rem; margin: .85rem 0 .2rem; line-height: 1.25; }
.cover__title a { color: var(--ink); text-decoration: none; }
.cover__sub { font-size: .85rem; color: var(--muted); margin: 0; line-height: 1.35; }

/* filters */
.tools { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; align-items: center; margin: 0 0 1.75rem; }
.filters { display: flex; flex-wrap: wrap; gap: .4rem; }
.filters button { font: inherit; font-size: .85rem; background: var(--surface); color: var(--ink); border: 1px solid var(--rule); padding: .3rem .7rem; cursor: pointer; }
.filters button[aria-pressed="true"] { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.search input { font: inherit; font-size: .95rem; padding: .45rem .75rem; border: 1px solid var(--rule); min-width: 16rem; background: var(--surface); color: var(--ink); }
[hidden] { display: none !important; }
.count { font-size: .9rem; color: var(--muted); }

/* item pages */
.item { display: grid; grid-template-columns: minmax(0, 1fr) 18rem; gap: clamp(1.5rem, 5vw, 4rem); padding: clamp(2rem, 5vw, 3.5rem) 0; }
/* A book's page has three parts: its cover, its text and its details. Wide: the details to the right of the text. Middle:
   the details under the cover, beside the text. Narrow: one column, the details last. */
.item--book { grid-template-columns: 15rem minmax(0, 1fr); grid-template-areas: "cover main" "aside main"; grid-template-rows: auto 1fr; }
.item--book > .item__cover { grid-area: cover; }
.item--book > .prose { grid-area: main; }
.item--book > .item__aside { grid-area: aside; align-self: start; }
@media (min-width: 72rem) {
  .item--book { grid-template-columns: 14rem minmax(0, 1fr) 15rem; grid-template-areas: "cover main aside"; grid-template-rows: auto; gap: 2.5rem; }
}
@media (max-width: 52rem) {
  .item { grid-template-columns: 1fr; }
  .item--book { grid-template-columns: 1fr; grid-template-areas: "cover" "main" "aside"; grid-template-rows: auto; }
}
.item__aside { font-size: .93rem; }
.item__aside dl { margin: 0; display: grid; gap: .1rem; }
.item__aside dt { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin-top: .9rem; }
.item__aside dd { margin: 0; }
.prose { max-width: 44rem; min-width: 0; }
.prose h2 { margin-top: 2rem; }
.prose h3 { margin-top: 1.6rem; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: .35rem; }
.prose img { margin: 1.5rem 0; }
.prose figure { margin: 1.5rem 0; }
.prose figcaption { font-size: .85rem; color: var(--muted); }
.headline { font-family: var(--serif); font-size: clamp(1.4rem, 2.4vw, 1.75rem); line-height: 1.3; margin-bottom: 1.25rem; }
.tagline { font-size: 1.2rem; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.5rem 0; }
.button { display: inline-block; padding: .65rem 1.2rem; border: 1px solid var(--ink); background: var(--ink); color: var(--surface); text-decoration: none; font-weight: 500; font-size: .95rem; }
.button:hover { background: var(--surface); color: var(--ink); }
.button--ghost { background: var(--surface); color: var(--ink); }
.button--ghost:hover { background: var(--ink); color: var(--surface); }
.book-cover { width: 100%; max-width: 22rem; height: auto; filter: drop-shadow(0 0 1.25rem var(--cover-halo)); }
/* A research record's standing mockup (0048-public-website FR-117): beside the record's details on its page, small on its card or row; the halo grounds it on a dark theme. */
.item__mockup { margin: 0 0 1.5rem; }
.item__mockup img { width: 100%; max-width: 18rem; height: auto; aspect-ratio: 600 / 680; object-fit: contain; filter: drop-shadow(0 0 1.25rem var(--cover-halo)); }
.card__img { display: block; margin: 0 0 .75rem; }
.card__img img { height: 8rem; width: auto; max-width: 100%; aspect-ratio: 600 / 680; object-fit: contain; object-position: left bottom; filter: drop-shadow(0 0 1rem var(--cover-halo)); }
.list__img { display: block; float: right; margin: 0 0 .5rem 1rem; }
.list__img img { height: 6rem; width: auto; aspect-ratio: 600 / 680; object-fit: contain; filter: drop-shadow(0 0 .75rem var(--cover-halo)); }
/* The Journal's current issue, its standing cover (0048-public-website FR-118): large on the Journal's front beside the quarter's items, small on the home page beside the section's head. */
.issue-row { display: grid; grid-template-columns: 1fr; gap: 1.5rem 2.5rem; align-items: start; }
.issue-row--home { align-items: center; margin-bottom: 1.5rem; }
.issue-row__items { min-width: 0; }
.issue-cover { display: block; text-decoration: none; color: var(--muted); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }
.issue-cover img { display: block; width: 100%; height: auto; aspect-ratio: 600 / 680; object-fit: contain; object-position: left bottom; filter: drop-shadow(0 0 1.25rem var(--cover-halo)); }
.issue-cover__label { display: block; margin-top: .5rem; }
.issue-cover--large { max-width: 22rem; }
.issue-cover--small { max-width: 11rem; }
.issue-cover--small img { object-position: left center; }
.issue-cover--flat img { aspect-ratio: 600 / 776; filter: none; border: 1px solid var(--rule); }
@media (min-width: 52rem) {
  .issue-row { grid-template-columns: 22rem minmax(0, 1fr); }
  .issue-row--home { grid-template-columns: 11rem minmax(0, 1fr); }
}
.drawings { display: grid; grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.drawings a { display: block; border: 1px solid var(--rule); background: var(--surface); padding: .5rem; }
.drawings img { aspect-ratio: 3 / 4; object-fit: contain; width: 100%; image-rendering: auto; }
.patent-thumb { height: 9rem; width: auto; max-width: 100%; object-fit: contain; margin: 0 auto 1rem; padding: .25rem; border: 1px solid var(--rule); background: var(--surface); }
.list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--rule); }
.list li { padding: 1rem 0; border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 7rem minmax(0, 1fr); gap: 1rem; }
.list time, .list .when { color: var(--muted); font-size: .9rem; }
.list li > :only-child { grid-column: 1 / -1; }
.list h3 { font-size: 1.1rem; margin: 0 0 .25rem; }
.list h3 a { color: var(--ink); text-decoration: none; }
.list p { margin: 0; color: var(--muted); font-size: .95rem; }
@media (max-width: 40rem) { .list li { grid-template-columns: 1fr; gap: .25rem; } }
.note { background: var(--wash); border-left: 3px solid var(--brand-secondary); padding: .9rem 1.1rem; font-size: .95rem; margin: 1.5rem 0; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: var(--gap); }

/* footer */
.footer { background: var(--ink); color: color-mix(in srgb, var(--brand-surface) 80%, var(--brand-text)); margin-top: 0; }
.footer__inner { max-width: var(--wrap); margin: 0 auto; padding: 3rem var(--gap) 2rem; display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; }
.footer__inner p { font-size: .95rem; max-width: 22rem; margin-top: 1rem; }
.footer__links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.footer h2 { font: 600 .75rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--brand-surface); margin-bottom: .9rem; }
.footer a { display: block; color: inherit; text-decoration: none; font-size: .93rem; padding: .18rem 0; }
.footer a:hover { color: var(--brand-surface); text-decoration: underline; }
.footer__legal { max-width: var(--wrap); margin: 0 auto; padding: 1rem var(--gap) 2rem; font-size: .82rem; border-top: 1px solid color-mix(in srgb, var(--brand-surface) 18%, var(--brand-text)); }
.footer__legal { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: .5rem 1.5rem; }
.footer__login { margin-left: auto; color: inherit; opacity: .85; }
.footer__login:hover { opacity: 1; }
/* the log-in dialog (0048-public-website FR-059): patched into #login by the server */
.login-layer:has(dialog) { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; background: color-mix(in srgb, var(--ink) 45%, transparent); }
.login { position: relative; margin: 0; width: min(26rem, calc(100vw - 2rem)); box-sizing: border-box; padding: 2rem 2.25rem; border: 1px solid var(--rule); background: var(--surface); color: var(--ink); box-shadow: 0 1.5rem 3rem rgb(0 0 0 / .25); }
.login h1 { font: 500 1.6rem/1.2 var(--serif); margin: 0 0 .75rem; }
.login p { margin: 0 0 1rem; }
.login .small { font-size: .88rem; color: var(--muted); }
.login label { display: block; font-weight: 600; font-size: .9rem; margin: 0 0 .35rem; }
.login input { width: 100%; box-sizing: border-box; font: inherit; padding: .6rem .7rem; border: 1px solid var(--muted); margin: 0 0 1rem; }
.login input[name=code] { letter-spacing: .3em; font-size: 1.3rem; text-align: center; }
.login button[type=submit] { font: inherit; font-weight: 600; background: var(--ink); color: #fff; border: 0; padding: .65rem 1.2rem; cursor: pointer; }
.login .err { color: #8a3147; font-weight: 600; }
.login__close { position: absolute; top: .5rem; right: .6rem; border: 0; background: none; font-size: 1.5rem; line-height: 1; cursor: pointer; color: var(--muted); }
.login__link { border: 0; background: none; padding: 0; font: inherit; color: var(--link, #214ea2); text-decoration: underline; cursor: pointer; }
.downloads { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .6rem; margin: 0 0 1.25rem; padding: .75rem 1rem; border: 1px solid var(--rule); background: var(--wash); }
.downloads__label { margin: 0 .25rem 0 0; font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 600; color: var(--muted); }
@media (max-width: 52rem) { .footer__inner, .footer__links { grid-template-columns: 1fr; } }

/* research sections: claim label, what would prove the claim wrong, described figures, tables, sources */
.rsec__claim { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 600; color: var(--muted); margin: -.25rem 0 1rem; }
.rsec__wrong { border-left: 2px solid var(--rule); padding-left: 1.25rem; font-size: .95rem; color: var(--muted); margin: 1rem 0; }
.rsec__wrong ul { margin: .25rem 0 0; }
.rsec__figure { border: 1px solid var(--rule); background: var(--wash); padding: .9rem 1.1rem; margin: 1.25rem 0; }
.rsec__figure figcaption { font-size: .93rem; color: var(--ink); }
.rsec__table { margin: 1.5rem 0; }
.rsec__table table { min-width: 40rem; }
.rsec__table figcaption { font-size: .85rem; color: var(--muted); margin-top: .5rem; }
.rsec .grid { margin: 1.25rem 0; }
.rsec__sources { border-top: 1px solid var(--rule); padding-top: 1rem; margin-top: 1.5rem; font-size: .93rem; }
.grid__heading { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1rem; margin-top: 1.5rem; border-bottom: 1px solid var(--rule); padding-bottom: .4rem; }
.grid__heading:first-child { margin-top: 0; }
.grid__heading h3 { margin: 0; }
.grid__heading a { font-size: .9rem; }
.st-test li { margin-bottom: .6rem; }
.st-status--red, .st-status--unknown { color: var(--brand-danger); font-weight: 600; }
.st-status--green { font-weight: 600; }
.small { font-size: .85rem; color: var(--muted); }
.steps { padding-left: 1.3rem; }
.steps li { margin-bottom: .6rem; }
.chips { list-style: none; padding: 0 !important; display: flex; flex-wrap: wrap; gap: .4rem; }
.chips li { border: 1px solid var(--rule); padding: .2rem .65rem; font-size: .88rem; color: var(--muted); margin: 0 !important; }
.brief { margin: 1.5rem 0; }
.brief dl { display: grid; gap: .5rem; margin: 1rem 0; }
.brief dt { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.brief dd { margin: 0 0 .5rem; font-size: .95rem; }
.brief__value small { color: var(--muted); }
.counts { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); margin: 0 0 2rem; }
.counts div { padding: .9rem 1.1rem; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.counts dt { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.counts dd { margin: .25rem 0 0; font: 500 1.8rem/1 var(--serif); }
.sectors { padding-left: 1.2rem; margin: 0 0 2rem; }
.sectors li { margin-bottom: .6rem; }

/* what's new: month headings and items */
.newsitem { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--rule); }
.newsitem time { color: var(--muted); font-size: .9rem; }
.newsitem h3 { font-size: 1.1rem; margin: 0 0 .25rem; }
.newsitem h3 a { color: var(--ink); text-decoration: none; }
.newsitem p { margin: 0 0 .35rem; color: var(--muted); font-size: .95rem; }
.newsitem__label { font-size: .75rem !important; letter-spacing: .1em; text-transform: uppercase; font-weight: 600; }
#news > h2[data-heading] { font-size: 1.1rem; font-family: var(--sans); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin: 2rem 0 .25rem; border-bottom: 1px solid var(--rule); padding-bottom: .4rem; }
#news > h2[data-heading]:first-child { margin-top: 0; }
@media (max-width: 40rem) { .newsitem { grid-template-columns: 1fr; gap: .25rem; } }
sup.mark { font-size: .65em; line-height: 0; vertical-align: super; margin-left: 1px; }

/* a companion page's contents list */
.companion-toc { border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 1rem 0; margin: 0 0 2rem; }
.companion-toc .label { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin: 0 0 .5rem; }
.companion-toc ul { list-style: none; padding: 0; margin: 0; font-size: .95rem; }
.companion-toc li { margin: 0 0 .35rem; }
.companion-toc li.sub { padding-left: 1.25rem; }

/* the patent portfolio (0055-patent-portfolio): the inquiry, the questions, the claims, the relations and the supporting assets */
.inquiry { border: 1px solid var(--rule); border-left: 3px solid var(--brand-primary); background: var(--wash); padding: 1.1rem 1.35rem; margin: 2.25rem 0; }
.inquiry h2 { margin-top: 0; font-size: 1.35rem; }
.inquiry .actions { display: flex; flex-wrap: wrap; gap: .6rem; margin: .9rem 0 .4rem; }
.prows { display: grid; gap: .75rem; margin: 1rem 0 .75rem; }
.prow { border: 1px solid var(--rule); background: var(--surface); padding: .85rem 1.1rem; }
.prow__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem .75rem; margin: 0 0 .55rem; }
.prow__num { font: 600 1.05rem/1.2 var(--mono); text-decoration: none; }
.prow__num:hover { text-decoration: underline; }
.prow__facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr)); gap: .45rem 1.25rem; margin: 0; }
.prow__facts dt { font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.prow__facts dd { margin: .1rem 0 0; font-size: .93rem; }
.filings { list-style: none; padding: 0; margin: .75rem 0 1.5rem; border-top: 1px solid var(--rule); }
.filing { padding: .7rem 0; border-bottom: 1px solid var(--rule); }
.filing__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .3rem .7rem; }
.filing__app { font: 600 .95rem/1.3 var(--mono); }
.filing__src { margin-left: auto; font-size: .85rem; }
.filing__dates, .filing__meta { margin: .3rem 0 0; display: flex; flex-wrap: wrap; gap: .15rem 1.1rem; font-size: .9rem; }
.filing__meta { color: var(--muted); font-size: .85rem; }
.drawings-block { margin: 1.5rem 0 2rem; min-width: 0; max-width: 100%; }
.carousel { position: relative; min-width: 0; max-width: 100%; border: 1px solid var(--rule); background: var(--surface); outline-offset: 3px; }
.carousel__track { display: flex; min-width: 0; width: 100%; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; scrollbar-width: thin; }
.carousel__slide { flex: 0 0 100%; min-width: 0; scroll-snap-align: center; margin: 0; padding: .75rem; box-sizing: border-box; text-align: center; }
.drawings-block > .carousel__slide { border: 1px solid var(--rule); background: var(--surface); }
.carousel__slide img { display: block; margin: 0 auto; width: auto; max-width: 100%; height: auto; max-height: 34rem; object-fit: contain; }
.carousel__slide figcaption { font-size: .82rem; color: var(--muted); margin-top: .4rem; }
.carousel__nav { display: flex; align-items: center; justify-content: center; gap: 1rem; padding: .4rem 0 .6rem; border-top: 1px solid var(--rule); }
.carousel__nav button { font: 600 1.4rem/1 var(--sans); width: 2.4rem; height: 2.2rem; border: 1px solid var(--rule); background: var(--surface); color: var(--ink); cursor: pointer; }
.carousel__nav button:hover:not(:disabled) { border-color: var(--ink); }
.carousel__nav button:disabled { opacity: .35; cursor: default; }
.carousel__count { font-size: .9rem; color: var(--muted); min-width: 5.5rem; text-align: center; }
.carousel:not(.is-ready) .carousel__nav { display: none; }
.figure-notes { font-size: .92rem; margin-top: .75rem; }
.figure-notes summary { cursor: pointer; font-weight: 600; }
.figure-notes li { margin: 0 0 .35rem; }
.callout { border-left: 3px solid var(--brand-secondary); background: var(--wash); padding: .9rem 1.2rem; margin: 1.5rem 0; }
.callout p { margin: 0 0 .35rem; }
.label { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.byline { color: var(--muted); font-size: .97rem; }
.claim { border-left: 2px solid var(--rule); padding: .1rem 0 .1rem 1rem; margin: 0 0 1.1rem; }
.claim p { margin: 0 0 .35rem; }
details.claims, .faq details, details.cpc-list { border-top: 1px solid var(--rule); padding: .65rem 0; }
details.claims summary, .faq summary, details.cpc-list summary { cursor: pointer; font-weight: 600; }
details.claims ol li { margin: 0 0 .75rem; }
.faq { margin: 2rem 0; }
.faq details p { margin: .5rem 0 0; color: var(--ink); }
.family-tree, .family-tree ul { list-style: none; padding-left: 1.1rem; border-left: 1px solid var(--rule); margin: .35rem 0; }
.family-tree { padding-left: .9rem; }
.family-tree li { margin: .35rem 0; }
ul.assets { padding-left: 1.1rem; }
ul.assets li { margin: 0 0 .7rem; }
ul.patent-numbers { list-style: none; padding: 0; margin: 0 0 .5rem; font-size: .9rem; columns: 2; }
ul.topics { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(19rem, 1fr)); gap: .9rem 2rem; margin: 0 0 1.5rem; }
details.cpc-list ul { columns: 2; font-size: .93rem; }
@media (max-width: 40rem) { details.cpc-list ul, ul.patent-numbers { columns: 1; } }

/* a book's preview reader (0048-public-website FR-056): a canvas, no text layer, nothing to save or print */
.reader { position: fixed; inset: 0; z-index: 50; display: none; flex-direction: column; background: color-mix(in srgb, var(--brand-text) 96%, var(--brand-surface)); color: var(--surface); user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.reader.is-open { display: flex; }
html.reader-open { overflow: hidden; }
.reader__bar, .reader__nav { display: flex; align-items: center; gap: 1rem; padding: .65rem var(--gap); flex-wrap: wrap; }
.reader__title { font-weight: 600; }
.reader__count { font-size: .88rem; opacity: .8; margin-right: auto; }
.reader__nav { justify-content: center; }
.reader__close, .reader__nav button, .reader__ask { font: inherit; font-size: .95rem; background: transparent; color: var(--surface); border: 1px solid color-mix(in srgb, var(--surface) 45%, transparent); padding: .4rem .9rem; cursor: pointer; text-decoration: none; }
.reader__nav button:disabled { opacity: .35; cursor: default; }
.reader__stage { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; overflow: auto; padding: .5rem; }
.reader__page { background: var(--surface); box-shadow: 0 4px 24px rgb(0 0 0 / .35); pointer-events: none; }
.reader.is-veiled .reader__page { filter: blur(18px); }
@media print { .reader { display: none !important; } }

/* print: the page's content on white paper, without the navigation, the controls or the footer */
@media print {
  :root { --surface: var(--brand-surface); --paper: var(--brand-surface); --wash: var(--brand-surface); --ink: var(--brand-text); --muted: color-mix(in srgb, var(--brand-text) 80%, var(--brand-surface)); --rule: color-mix(in srgb, var(--brand-text) 45%, var(--brand-surface)); }
  body { background: var(--brand-surface); color: var(--brand-text); font-size: 11pt; line-height: 1.45; }
  .skip, .masthead, .menu, .nav, .footer, .tools, .filters, .search, .actions, .button, .companion-toc, .hero__art, .shelf--row, noscript { display: none !important; }
  .page-head { background: var(--brand-surface); border-bottom: 1px solid color-mix(in srgb, var(--brand-text) 45%, var(--brand-surface)); padding: 0 0 .75rem; }
  .section, .item { padding: .75rem 0; }
  .item, .item--book { display: block; }
  .wrap { max-width: none; padding: 0; }
  h1, h2, h3 { break-after: avoid; }
  .card, .cover, tr, figure, blockquote, .rsec__figure { break-inside: avoid; }
  .card { border: 1px solid color-mix(in srgb, var(--brand-text) 45%, var(--brand-surface)); }
  .card__text { display: block; -webkit-line-clamp: unset; overflow: visible; }
  a { color: var(--brand-text); text-decoration: underline; }
  .prose a[href^="http"]::after, .card a[href^="http"]::after { content: " (" attr(href) ")"; font-size: .85em; word-break: break-all; }
  .table { overflow: visible; }
  table { font-size: 9pt; }
  img { max-width: 100%; break-inside: avoid; }
}

/* The Console: the band on a work's page, a front and the home page, only when the harness is served on this computer
   (0048-public-website FR-069 to FR-071). A double rule in the tertiary colour and a label set it apart from the published page; the
   masthead's control hides it. */
.console { background: color-mix(in srgb, var(--brand-tertiary) 7%, var(--surface)); border-top: 3px double color-mix(in srgb, var(--brand-tertiary) 35%, var(--surface));
  border-bottom: 1px solid color-mix(in srgb, var(--brand-tertiary) 35%, var(--surface)); padding: 1.75rem 0 2rem; --desk-rule: color-mix(in srgb, var(--brand-tertiary) 35%, var(--surface)); }
html[data-console="off"] body:not(.private-page) .console { display: none; }
.console__icon { width: 1em; height: 1em; vertical-align: -0.12em; margin-right: .2em; }
.console__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1.5rem; margin-bottom: .5rem; }
.console__head h2 { margin: 0; }
.console__local { font-size: .78rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--brand-tertiary); }
.console__lede { color: var(--muted); max-width: 52rem; margin: 0 0 .75rem; }
.console__meta { font-size: .85rem; color: var(--muted); margin: 0 0 1.25rem; display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; }
.console code { font-family: var(--mono); font-size: .88em; background: var(--surface); border: 1px solid var(--rule); padding: .1rem .4rem; border-radius: 2px; }
.console__part { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--desk-rule); }
.console__part h3 { font-size: 1.3rem; margin: 0 0 .75rem; }
.console__tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); border-top: 1px solid var(--desk-rule); border-left: 1px solid var(--desk-rule); margin: 0 0 1.25rem; }
.console__tile { padding: .85rem 1rem; border-right: 1px solid var(--desk-rule); border-bottom: 1px solid var(--desk-rule); background: var(--surface); }
.console__n { display: block; font: 500 1.8rem/1 var(--serif); }
.console__l { display: block; font-size: .82rem; color: var(--muted); margin-top: .3rem; }
.console__who { margin: 1.25rem 0 .5rem; font-size: .78rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.console__items { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--desk-rule); }
.console__item { display: grid; grid-template-columns: 8rem minmax(0, 1fr) 20rem; gap: .5rem 1.25rem; padding: .9rem 0; border-bottom: 1px solid var(--desk-rule); align-items: start; }
.console__item > .console__run { grid-column: 1 / -1; }
.console__level { font-size: .75rem; font-weight: 600; letter-spacing: .04em; padding: .15rem .55rem; border-radius: 2px; border: 1px solid var(--rule); background: var(--surface); display: inline-block; justify-self: start; }
.console__level--blocker { border-color: var(--brand-tertiary); color: var(--brand-tertiary); }
.console__level--attention { border-color: var(--brand-link); color: var(--brand-link); }
.console__what { font-size: 1rem; margin: 0 0 .35rem; }
.console__rule { font-size: .85rem; color: var(--muted); margin: 0 0 .25rem; }
.console__do { font-size: .85rem; color: var(--muted); display: flex; flex-wrap: wrap; align-items: center; gap: .35rem .6rem; }
.console__command { white-space: pre-wrap; overflow-wrap: anywhere; }
.console__copy { font: inherit; font-size: .78rem; background: var(--surface); border: 1px solid var(--rule); padding: .15rem .55rem; color: var(--ink); cursor: pointer; border-radius: 2px; min-height: 1.8rem; }
.console__copy:hover { border-color: var(--ink); }
.console__pages { font-size: .92rem; }
.console__guide { background: var(--surface); border: 1px solid var(--desk-rule); padding: .6rem 1rem; margin: 0 0 .6rem; }
.console__guide summary { cursor: pointer; font-size: 1rem; }
.console__guide h4 { font-size: 1.05rem; margin: 1rem 0 .3rem; }
.console__guide p { font-size: .95rem; color: var(--muted); }
.console__steps { margin: .75rem 0 .5rem; padding-left: 1.4rem; }
.console__steps li { margin: 0 0 .6rem; }
.console__step { display: block; margin-bottom: .2rem; }
.console__steps .console__do { display: inline-flex; }
.console__see { font-size: .85rem; }
.console__run-btn { font: inherit; font-size: .78rem; background: var(--brand-tertiary); border: 1px solid var(--brand-tertiary); padding: .15rem .6rem; color: var(--surface); cursor: pointer; border-radius: 2px; min-height: 1.8rem; }
.console__run-btn:hover { background: var(--ink); border-color: var(--ink); }
.console__run:empty { display: none; }
.console__run { margin: .5rem 0 0; }
.console__ran { font-size: .85rem; color: var(--muted); margin: 0 0 .25rem; }
.console__status--ok { color: var(--brand-secondary); font-weight: 600; }
.console__status--fail { color: var(--brand-tertiary); font-weight: 600; }
.console__output { background: var(--ink); color: var(--paper); font-family: var(--mono); font-size: .8rem; line-height: 1.45; padding: .75rem 1rem; max-height: 24rem; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; border: 0; margin: 0 0 .5rem; }
.console__meta .console__command { font-size: .8rem; }
.console-toggle { display: inline-flex; align-items: center; gap: .4rem; font-size: .85rem; color: var(--brand-tertiary); margin-left: auto; white-space: nowrap; cursor: pointer; }
.console-toggle input { accent-color: var(--brand-tertiary); width: 1rem; height: 1rem; margin: 0; }
.console-toggle + .menu, .console-toggle + .nav { margin-left: 0; }
@media (max-width: 52rem) { .console__item { grid-template-columns: 1fr; gap: .4rem; } .console-toggle { margin-left: 0; order: 2; } }

.console__docs { font-size: .9rem; font-weight: 600; margin-right: auto; margin-left: 1rem; }
.git-pill { display: inline-flex; align-items: center; gap: .35rem; font: inherit; font-size: .8rem; padding: .1rem .55rem; margin-left: .6rem; border: 1px solid currentColor; border-radius: 999px; background: transparent; color: var(--brand-tertiary); cursor: pointer; white-space: nowrap; }
.git-pill[hidden] { display: none; }
.git-pill__n[data-some="true"] { font-weight: 700; }
.git-pill[data-behind]:not([data-behind="0"]) { border-width: 2px; }
.git-pill + .menu, .git-pill + .nav { margin-left: 0; }
html[data-console="off"] .git-pill { display: none; }
.git-dialog { max-width: min(34rem, 92vw); border: 1px solid var(--brand-tertiary); border-radius: 6px; padding: 1rem 1.25rem; background: #fff; color: inherit; }
.git-dialog::backdrop { background: rgba(0, 0, 0, .45); }
.git-dialog h2 { margin: 0 0 .5rem; font-size: 1.15rem; }
.git-dialog code { font-size: .9em; padding: .05rem .35rem; border: 1px solid currentColor; border-radius: 3px; }
.git-dialog__row { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.git-dialog__btn { font: inherit; font-size: .85rem; padding: .3rem .8rem; border: 1px solid currentColor; border-radius: 6px; background: transparent; color: inherit; cursor: pointer; }
.git-dialog__btn[hidden] { display: none; }
.git-dialog__btn--go { background: var(--brand-tertiary); border-color: var(--brand-tertiary); color: #fff; }

/* the lineage (0048-public-website FR-142): the legal line is a link that is not underlined, and what it opens */
.footer__lineage { color: inherit; text-decoration: none; cursor: pointer; }
.footer__lineage:hover { opacity: .85; }
.footer__lineage:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }
.lineage { width: min(40rem, calc(100vw - 2rem)); max-height: calc(100vh - 2rem); box-sizing: border-box; padding: 1.5rem 1.75rem; border: 1px solid var(--rule); background: var(--surface); color: var(--ink); box-shadow: 0 1.5rem 3rem rgb(0 0 0 / .25); }
.lineage::backdrop { background: color-mix(in srgb, var(--ink) 45%, transparent); }
.lineage h2 { font: 500 1.4rem/1.2 var(--serif); margin: 0 0 .75rem; }
.lineage__list { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1rem; margin: 1rem 0; font-size: .9rem; }
.lineage__list dt { font-weight: 600; }
.lineage__list dd { margin: 0; overflow-wrap: anywhere; font-family: ui-monospace, monospace; font-size: .85rem; }
.lineage__buttons { display: flex; gap: .75rem; justify-content: flex-end; }
@media (max-width: 34rem) { .lineage__list { grid-template-columns: 1fr; } .lineage__list dd { margin-bottom: .5rem; } }
.lineage__seo { margin: 1rem 0; border-top: 1px solid var(--rule); padding-top: .75rem; }
.lineage__seo h3 { font: 600 1rem/1.2 var(--sans, inherit); margin: 0 0 .4rem; }
.lineage__note, .lineage__why { font-size: .8rem; opacity: .8; margin: .1rem 0 0; }
.lineage__check { display: flex; gap: .6rem; margin: .5rem 0; font-size: .9rem; }
.lineage__mark { flex: none; }
.lineage { overflow: auto; }