/* KB Analytics sector records.
   House style from the live site: Libre Baskerville headings, Almarai body,
   black on white, cream stock for plates, one yellow. Grid: 8 px unit, 12 columns. */
:root {
  --paper: #ffffff;
  --stock: #f3eee3;
  --field: #f4f4f3;
  --ink: #111111;
  --ink-soft: #55554f;
  --rule: #d9d9d4;
  --yellow: #ffc700;
  --serif: "Libre Baskerville", Georgia, "Times New Roman", serif;
  --sans: "Almarai", "Helvetica Neue", Arial, sans-serif;
  --max: 1200px;
  --text: 660px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.6;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--yellow); text-decoration-thickness: 3px; }
a:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--yellow); color: var(--ink); padding: 8px 16px; z-index: 20;
}
.skip:focus { left: 8px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 48px; }

/* header */
.site-head { border-bottom: 1px solid var(--ink); }
.site-head .wrap {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 24px; padding-top: 24px; padding-bottom: 20px;
}
.brand {
  font-family: var(--serif); font-weight: 700; font-size: 24px;
  text-decoration: none; letter-spacing: -0.01em; flex: 0 0 auto;
}
.site-nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.site-nav a {
  font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  text-decoration: none; padding: 6px 0; border-bottom: 3px solid transparent;
}
.site-nav a[aria-current="page"], .site-nav a:hover { border-bottom-color: var(--yellow); }

/* mission: one line on yellow, not a paragraph on a banner */
.notice { background: var(--yellow); }
.notice .wrap {
  padding-top: 10px; padding-bottom: 10px;
  font-family: var(--serif); font-size: 16px; line-height: 1.4;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

/* hero */
.hero { padding: 72px 0 32px; }
.kicker { font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; margin: 0 0 24px; text-wrap: balance; }
h1 {
  font-family: var(--serif); font-weight: 400; font-size: 54px; line-height: 1.14;
  letter-spacing: -0.012em; margin: 0; max-width: 17em; text-wrap: balance;
}
.standfirst { font-size: 21px; line-height: 1.55; max-width: var(--text); margin: 32px 0 0; color: var(--ink); }
.identity {
  margin: 28px 0 0; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-soft); max-width: 52em;
}
.hero-actions {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 16px 28px;
  margin: 32px 0 0;
}
.cta {
  display: inline-block;
  background: var(--yellow); color: var(--ink);
  font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  text-decoration: none; padding: 14px 22px; line-height: 1.2;
}
.cta:hover { outline: 3px solid var(--ink); outline-offset: 0; text-decoration: none; }
.cta-quiet {
  font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  text-decoration: none; border-bottom: 3px solid var(--yellow); padding-bottom: 4px;
}

/* marker highlight: one slanted yellow swipe behind a short phrase */
mark.hl { background: none; color: inherit; position: relative; white-space: nowrap; z-index: 0; }
mark.hl::before {
  content: ""; position: absolute; z-index: -1;
  left: -0.22em; right: -0.22em; top: 34%; bottom: 2%;
  background: var(--yellow);
  transform: skewX(-20deg) rotate(-0.8deg);
}
@media print { mark.hl::before { -webkit-print-color-adjust: exact; print-color-adjust: exact; } }

/* plate: a 1935 drawing-office plate on cream stock */
.plate-band { margin: 16px 0 0; }
.plate-fig { margin: 0; }
.plate { display: block; width: 100%; height: auto; }
.plate-fig figcaption {
  font-size: 14px; color: var(--ink-soft); padding-top: 16px; max-width: var(--text);
}

/* on-page jump */
.folio-jump {
  display: flex; flex-wrap: wrap; gap: 8px 28px;
  padding-top: 40px; padding-bottom: 8px;
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
}
.folio-jump a { text-decoration: none; border-bottom: 2px solid transparent; padding-bottom: 4px; }
.folio-jump a:hover { border-bottom-color: var(--yellow); }

/* sections: label column + content column */
.sect { padding: 72px 0 24px; }
.sect + .sect { border-top: 1px solid var(--rule); }
.sect .wrap { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 24px; }
.sect-label { grid-column: 1 / span 3; }
.sect-body { grid-column: 4 / span 9; }
.sect-label h2 {
  font-family: var(--sans); font-weight: 700; font-size: 13px;
  letter-spacing: 0.18em; text-transform: uppercase; margin: 6px 0 0;
}
.sect-label .num { font-family: var(--serif); font-size: 15px; display: block; margin-bottom: 8px; color: var(--ink-soft); }
.sect-body > p { max-width: var(--text); margin: 0 0 24px; }
.sect-body h3 {
  font-family: var(--serif); font-weight: 400; font-size: 30px; line-height: 1.25;
  margin: 0 0 24px; max-width: 20em; text-wrap: balance;
}

/* facts */
.facts { list-style: none; margin: 8px 0 48px; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 24px; }
.facts li { border-top: 1px solid var(--ink); padding: 16px 0 32px; }
.facts .fig {
  font-family: var(--serif); font-size: 34px; line-height: 1.1;
  display: block; margin-bottom: 12px;
  font-variant-numeric: lining-nums tabular-nums;
}
.facts .what { font-size: 16px; line-height: 1.5; display: block; }
.facts .src { font-size: 13px; color: var(--ink-soft); display: block; margin-top: 10px; }

/* experimental records */
.questions { list-style: none; margin: 8px 0 48px; padding: 0; counter-reset: q; }
.questions > li {
  counter-increment: q; border-top: 1px solid var(--ink);
  padding: 32px 0 40px; display: grid; grid-template-columns: repeat(9, 1fr); column-gap: 24px;
}
.questions > li::before {
  content: counter(q, decimal-leading-zero);
  font-family: var(--serif); font-size: 15px; color: var(--ink-soft);
  grid-column: 1 / span 1; padding-top: 8px;
}
.questions .q-main { grid-column: 2 / span 8; }
.questions h4 {
  font-family: var(--serif); font-weight: 400; font-size: 24px; line-height: 1.3;
  margin: 0 0 12px; max-width: 24em;
}
.questions p { margin: 0 0 16px; max-width: var(--text); font-size: 17px; }
.questions dl {
  margin: 8px 0 0; display: grid; grid-template-columns: 220px 1fr;
  gap: 0; max-width: 820px; font-size: 16px; line-height: 1.5;
}
.questions dt {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 14px 16px 14px 0; color: var(--ink-soft);
  border-top: 1px solid var(--rule);
  white-space: nowrap;
}
.questions dd { margin: 0; padding: 12px 0 14px; border-top: 1px solid var(--rule); }
.questions dt.unk, .questions dd.unk {
  background: var(--stock);
  border-top: 1px solid var(--ink);
}
.questions dt.unk { padding-left: 12px; box-shadow: inset 4px 0 0 var(--yellow); }
.questions dd.unk { padding-right: 16px; }

/* method steps */
.steps { list-style: none; margin: 8px 0 48px; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 24px; counter-reset: s; }
.steps li { counter-increment: s; border-top: 4px solid var(--yellow); padding: 16px 0 24px; font-size: 16px; line-height: 1.5; }
.steps li::before { content: counter(s); font-family: var(--serif); font-size: 15px; color: var(--ink-soft); display: block; margin-bottom: 8px; }
.steps strong { display: block; font-family: var(--serif); font-weight: 400; font-size: 21px; line-height: 1.3; margin-bottom: 8px; }

/* sources */
.sources { margin: 0 0 48px; padding-left: 22px; font-size: 15px; line-height: 1.5; color: var(--ink-soft); max-width: 820px; }
.sources li { margin-bottom: 8px; overflow-wrap: anywhere; }

/* hub cards */
.cards-band { padding: 8px 0 24px; }
.cards-head {
  font-family: var(--serif); font-weight: 400; font-size: 30px; line-height: 1.25;
  margin: 0 0 8px; max-width: 20em; text-wrap: balance;
}
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px 24px; padding: 24px 0 48px; }
.card { text-decoration: none; display: block; }
.card-num {
  display: block; font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  margin-bottom: 12px; color: var(--ink-soft);
}
.card-plate {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--stock);
  border: 1px solid var(--ink);
}
.card-plate .plate { width: 100%; height: auto; display: block; }
.card h2 { font-family: var(--serif); font-weight: 400; font-size: 28px; line-height: 1.25; margin: 20px 0 12px; min-height: 2.5em; }
.card p { margin: 0 0 16px; font-size: 16px; line-height: 1.55; }
.card .go { font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; border-bottom: 3px solid var(--yellow); padding-bottom: 4px; }
.card:hover h2 { text-decoration: underline; text-decoration-color: var(--yellow); text-decoration-thickness: 3px; text-underline-offset: 6px; }
.card:hover .card-plate { outline: 3px solid var(--yellow); outline-offset: 0; }

/* brainstorm form: a quoted plate */
form.brainstorm {
  position: relative;
  background: var(--stock);
  border: 1px solid var(--ink);
  padding: 32px;
  max-width: 760px;
  margin: 8px 0 24px;
}
form.brainstorm .hp {
  position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden;
}
.fields-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; align-items: start; }
.field { margin-bottom: 20px; }
.field label {
  display: block; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  margin-bottom: 4px;
}
.field input, .field textarea {
  display: block; width: 100%; box-sizing: border-box;
  font-family: var(--sans); font-size: 18px; line-height: 24px;
  color: var(--ink); background: transparent;
  border: 0; border-bottom: 1px solid var(--ink); border-radius: 0;
  padding: 8px 0; height: 44px; appearance: none;
}
.field textarea {
  height: auto; min-height: 10em; line-height: 1.5;
  border: 1px solid var(--ink); padding: 12px;
  background: var(--paper); resize: vertical;
}
.field input:focus, .field textarea:focus {
  outline: 3px solid var(--yellow); outline-offset: 2px;
}
form.brainstorm button[type="submit"] {
  display: inline-block;
  background: var(--yellow); color: var(--ink);
  font-family: var(--sans); font-size: 13px; letter-spacing: 0.14em;
  text-transform: uppercase; border: 0; padding: 16px 24px; cursor: pointer;
}
form.brainstorm button[type="submit"]:hover,
form.brainstorm button[type="submit"]:focus-visible {
  outline: 3px solid var(--ink); outline-offset: 0;
}
.form-aside { max-width: var(--text); color: var(--ink-soft); font-size: 16px; }

/* sector-page invite */
.invite { background: var(--stock); border-top: 1px solid var(--ink); margin-top: 24px; }
.invite .wrap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 16px 24px; padding-top: 28px; padding-bottom: 28px;
}
.invite p {
  font-family: var(--serif); font-size: 24px; line-height: 1.3;
  margin: 0; max-width: 18em; text-wrap: balance;
}

/* footer */
.site-foot { border-top: 1px solid var(--ink); margin-top: 24px; }
.site-foot .wrap {
  padding-top: 32px; padding-bottom: 72px;
  display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 24px;
  font-size: 15px; line-height: 1.6;
}
.site-foot .f1 { grid-column: 1 / span 3; font-family: var(--serif); font-weight: 700; font-size: 18px; }
.site-foot .f2 { grid-column: 4 / span 4; }
.site-foot .f3 { grid-column: 8 / span 5; color: var(--ink-soft); }
.site-foot .ids { display: block; margin-top: 8px; font-size: 13px; letter-spacing: 0.04em; }

@media (max-width: 1100px) {
  h1 { font-size: 44px; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 800px) {
  body { font-size: 17px; }
  .wrap { padding: 0 24px; }
  .hero { padding: 48px 0 24px; }
  h1 { font-size: 36px; }
  .standfirst { font-size: 19px; }
  .sect { padding: 48px 0 8px; }
  .sect-label, .sect-body { grid-column: 1 / -1; }
  .sect-label { margin-bottom: 24px; }
  .cards { grid-template-columns: 1fr; gap: 40px; }
  .questions > li { display: block; }
  .questions > li::before { display: block; margin-bottom: 8px; }
  .questions dl { grid-template-columns: 1fr; }
  .questions dt { padding-bottom: 0; }
  .questions dd { margin-bottom: 8px; }
  .site-foot .f1, .site-foot .f2, .site-foot .f3 { grid-column: 1 / -1; margin-bottom: 16px; }
  .fields-2 { grid-template-columns: 1fr; }
  form.brainstorm { padding: 24px 16px; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  h1 { font-size: 31px; }
  .facts, .steps { grid-template-columns: 1fr; }
  .facts .fig { font-size: 32px; }
  .site-head .wrap { flex-direction: column; gap: 12px; }
  .site-nav {
    display: grid; grid-template-columns: repeat(2, max-content);
    column-gap: 24px; row-gap: 4px; width: 100%;
  }
  .notice .wrap { font-size: 15px; }
  .kicker { letter-spacing: 0.1em; }
  .card h2 { min-height: 0; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}
@media print {
  .skip, .site-nav, .folio-jump, form.brainstorm, .invite, .hero-actions { display: none; }
  .notice, .questions dt.unk, .questions dd.unk, mark.hl::before {
    -webkit-print-color-adjust: exact; print-color-adjust: exact;
  }
  .sect, .questions > li, .plate-fig, .card { break-inside: avoid; }
  a { text-decoration: none; }
  .sources a[href]::after { content: " (" attr(href) ")"; font-size: 12px; }
  .site-foot { break-inside: avoid; }
}

/* home page questions and answers */
.faq { margin: 8px 0 48px; max-width: var(--text); }
.faq dt { font-family: var(--serif); font-size: 21px; line-height: 1.3; padding-top: 20px; border-top: 1px solid var(--rule); }
.faq dd { margin: 8px 0 20px; }