:root {
  --paper: #f5f4ef;
  --surface: #ffffff;
  --ink: #1b1d19;
  --muted: #5c6057;
  --line: #d0d2c8;
  --accent: #d9ff62;
  --focus: #1859c9;
  --error: #a22520;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
::selection { background: var(--accent); color: var(--ink); }
a { color: inherit; text-underline-offset: 4px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
button, input, select, textarea { font: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}
button, input, select, textarea { border-radius: 0; }
button { color: inherit; }
svg { display: block; max-width: 100%; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -0.045em; }
h1 { font-size: clamp(44px, 7.5vw, 100px); font-weight: 600; }
h2 { font-size: clamp(32px, 4vw, 52px); font-weight: 500; }
h3 { font-size: 28px; font-weight: 500; }
p, a, h1, h2, h3, td, th, code { overflow-wrap: anywhere; }
ul, ol { margin: 0; padding-left: 24px; }
address { font-style: normal; }
.container { width: min(100% - 80px, 1248px); margin-inline: auto; }
.section { margin-top: 64px; }
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.5;
}
.small-text { font-size: 14px; color: var(--muted); }
.muted { color: var(--muted); font-weight: 400; }
.lead { font-size: clamp(20px, 2.2vw, 28px); line-height: 1.45; letter-spacing: -0.025em; }
.skip-link {
  position: fixed;
  left: 16px;
  top: 8px;
  padding: 16px;
  z-index: 200;
  background: var(--ink);
  color: white;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.site-header { height: 64px; border-bottom: 1px solid var(--line); position: relative; z-index: 80; background: var(--paper); }
.header-inner {
  width: min(100% - 80px, 1248px);
  height: 100%;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
}
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-size: 20px; font-weight: 700; letter-spacing: -0.055em; justify-self: start; }
.brand-mark { width: 28px; height: 28px; flex: 0 0 28px; }
.desktop-nav { display: flex; align-items: center; gap: 24px; font-size: 14px; }
.desktop-nav a { text-decoration: none; }
.desktop-nav a:hover { text-decoration: underline; }
.header-cta { justify-self: end; font-size: 14px; text-decoration: none; border: 1px solid var(--ink); padding: 8px 16px; display: flex; gap: 16px; align-items: center; }
.header-cta:hover { background: var(--accent); }
.menu-toggle { display: none; }
.mobile-menu { position: fixed; inset: 52px 0 0; z-index: 90; background: var(--paper); padding: 40px 24px; overflow-y: auto; flex-direction: column; gap: 24px; }
.mobile-menu a { font-size: clamp(28px, 6vw, 44px); text-decoration: none; padding-block: 16px; border-bottom: 1px solid var(--line); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: white;
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  min-height: 48px;
  max-width: 100%;
  transition: background-color 160ms ease, color 160ms ease;
}
.button:hover { background: var(--accent); color: var(--ink); }
.button-secondary { background: transparent; color: var(--ink); }
.text-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; font-size: 14px; font-weight: 700; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.text-button { border: 0; background: transparent; text-decoration: underline; text-underline-offset: 4px; padding: 16px; min-height: 48px; font-size: 14px; }
.hero { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: 64px; padding-block: 64px; align-items: end; }
.hero > div { display: flex; flex-direction: column; gap: 24px; align-items: flex-start; min-width: 0; }
.hero h1 { font-size: clamp(64px, 9vw, 128px); line-height: 0.94; letter-spacing: -0.075em; }
.accent-dot { color: #697c1b; }
.hero-description { max-width: 580px; font-size: clamp(18px, 2vw, 24px); line-height: 1.45; }
.hero-aside { display: flex; flex-direction: column; gap: 24px; min-width: 0; }
.system-diagram { padding: 24px; background: linear-gradient(145deg, #e7e9df, #f0f1e9); border: 1px solid var(--line); display: flex; flex-direction: column; }
.diagram-index { font-size: 11px; letter-spacing: 0.12em; margin-bottom: 40px; }
.diagram-node { display: flex; justify-content: space-between; align-items: center; gap: 24px; background: var(--surface); border: 1px solid var(--ink); padding: 16px; font-weight: 700; }
.diagram-node span { font-size: 12px; font-weight: 400; }
.diagram-node-accent { background: var(--accent); }
.diagram-connector { align-self: center; height: 40px; line-height: 40px; }
.section-heading { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 5fr) minmax(0, 4fr); gap: 40px; padding-top: 24px; margin-bottom: 40px; border-top: 1px solid var(--ink); align-items: start; }
.section-heading > p:last-child { color: var(--muted); max-width: 360px; }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.data-card { border: 1px solid var(--line); background: var(--surface); min-width: 0; }
.card-stats { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); border-bottom: 1px solid var(--line); background: #eeefe8; padding: 24px; gap: 24px; }
.card-stats > div { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.card-stats strong { font-size: clamp(20px, 2.3vw, 32px); line-height: 1.1; font-weight: 500; letter-spacing: -0.045em; overflow-wrap: anywhere; }
.card-stats span { font-size: 12px; color: var(--muted); line-height: 1.4; }
.card-content { padding: 24px; display: flex; flex-direction: column; gap: 24px; }
.card-content h3 { font-size: clamp(28px, 3.2vw, 44px); }
.card-content h3 a { text-decoration: none; }
.card-content h3 a:hover { text-decoration: underline; }
.card-content > p:not(.eyebrow) { color: var(--muted); }
.card-content .text-link { margin-top: auto; }
.guide-grid .data-card { display: flex; flex-direction: column; }
.guide-grid .card-content { flex: 1; }
.data-card-wide { grid-column: 1 / -1; }
.data-card-wide .card-content { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 64px; }
.data-card-wide .eyebrow { grid-column: 1 / -1; }
.data-card-wide .text-link { grid-column: 2; }
.approach { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; padding-top: 40px; border-top: 1px solid var(--ink); }
.approach > div:first-child { display: flex; flex-direction: column; gap: 24px; }
.approach-copy { display: flex; flex-direction: column; gap: 24px; }
.principles { list-style: none; padding: 0; margin-block: 16px; }
.principles li { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 24px; padding-block: 24px; border-top: 1px solid var(--line); }
.principles li > span { font-size: 12px; }
.principles h3 { font-size: 22px; margin-bottom: 16px; }
.principles p { color: var(--muted); }
.page-hero { padding-block: 64px; display: flex; flex-direction: column; align-items: flex-start; gap: 24px; border-bottom: 1px solid var(--ink); }
.page-hero .lead { max-width: 780px; }
.breadcrumb { font-size: 14px; margin-bottom: 16px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 8fr); gap: 64px; margin-top: 64px; align-items: start; }
.article-sidebar .card-stats strong { font-size: 24px; }
.article-sidebar .card-content h2 { font-size: 20px; }
.article-sidebar .card-content a { font-size: 14px; }
.prose { min-width: 0; }
.prose section + section { margin-top: 64px; }
.prose h2 { font-size: clamp(28px, 3vw, 40px); margin-bottom: 24px; line-height: 1.15; }
.prose p + p { margin-top: 24px; }
.prose p { line-height: 1.8; }
.prose a { text-decoration-color: #697c1b; }
.table-wrap { max-width: 100%; overflow-x: auto; margin-block: 40px; border: 1px solid var(--line); background: var(--surface); }
table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 14px; line-height: 1.5; }
th, td { padding: 24px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
th { font-weight: 700; background: #eeefe8; }
tbody tr:last-child td { border-bottom: 0; }
code { font-size: 12px; }
.article-next { margin-top: 64px; padding: 24px; border-block: 1px solid var(--ink); display: flex; flex-direction: column; gap: 24px; background: var(--accent); }
.article-next a { font-size: clamp(24px, 3vw, 36px); line-height: 1.2; letter-spacing: -0.04em; text-decoration: none; }
.article-next a:hover { text-decoration: underline; }
.legal-hero h1 { font-size: clamp(44px, 7vw, 88px); }
.legal-prose { max-width: 840px; margin: 64px 0 0 auto; }
.contact-layout { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: 64px; align-items: start; margin-top: 64px; }
.contact-layout .card-content > h2 { font-size: 32px; }
.contact-form { display: flex; flex-direction: column; align-items: stretch; gap: 24px; }
.contact-form > .button { align-self: flex-start; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.field { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.field label { font-size: 14px; font-weight: 700; }
input:not([type="checkbox"]), select, textarea { width: 100%; min-width: 0; max-width: 100%; border: 1px solid #858a7d; padding: 16px; background: var(--surface); color: var(--ink); }
textarea { resize: vertical; min-height: 128px; }
input[type="checkbox"] { width: 20px; height: 20px; margin: 0; flex: 0 0 20px; accent-color: var(--ink); }
.checkbox-label { display: flex; align-items: flex-start; gap: 16px; font-size: 14px; }
.checkbox-label input { margin-top: 4px; }
.form-status { font-size: 14px; color: var(--error); }
.form-status:empty { display: none; }
.draft-panel { padding: 24px; border: 1px solid var(--line); background: var(--paper); display: flex; flex-direction: column; gap: 24px; }
.draft-panel h3 { font-size: 24px; }
.contact-details { display: flex; flex-direction: column; gap: 40px; min-width: 0; }
.contact-details > div { display: flex; flex-direction: column; gap: 24px; }
.contact-details h2 { font-size: clamp(28px, 3vw, 40px); }
.contact-details h3 { font-size: 24px; }
.contact-email { font-size: 20px; letter-spacing: -0.03em; }
.map-block { border: 1px solid var(--line); }
.covent-garden-location-map { width: 100%; height: auto; }
.map-block figcaption { font-size: 12px; padding: 24px; line-height: 1.8; }
.site-footer { margin-top: 64px; padding-block: 64px; border-top: 1px solid var(--ink); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 4fr) minmax(0, 2fr) minmax(0, 2fr); gap: 40px; }
.footer-grid > div, .footer-grid > nav { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; min-width: 0; font-size: 13px; }
.footer-grid h2 { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 8px; }
.footer-brand { font-size: 23px; letter-spacing: -0.065em; font-weight: 700; text-decoration: none; }
.footer-grid nav a { text-decoration: none; }
.footer-grid nav a:hover { text-decoration: underline; }
.footer-grid .small-text { font-size: 12px; }
.footer-button { border: 0; background: none; font-size: 13px; padding: 0; text-align: left; text-decoration: underline; text-underline-offset: 4px; }
.cookie-banner { position: fixed; inset: auto 0 0; background: var(--surface); border-top: 1px solid var(--ink); z-index: 100; max-height: 80vh; max-height: 80dvh; overflow-y: auto; box-shadow: 0 -8px 40px #1b1d190d; }
.cookie-inner { width: min(100% - 80px, 1248px); margin-inline: auto; padding-block: 24px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: center; }
.cookie-inner h2 { font-size: 20px; letter-spacing: -0.03em; margin-bottom: 8px; }
.cookie-inner p { font-size: 13px; }
.cookie-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.cookie-actions .button { padding: 16px; font-size: 12px; gap: 8px; }
.cookie-options { grid-column: 1 / -1; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--line); }
.cookie-options p { flex-basis: 100%; }
.cookie-options label { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.cookie-inner > .small-text { grid-column: 1 / -1; }
.cookie-inner > .small-text:empty { display: none; }

@media (max-width: 1100px) {
  .container, .header-inner, .cookie-inner { width: calc(100% - 48px); }
  .hero { gap: 40px; }
  .article-layout { grid-template-columns: minmax(0, 3fr) minmax(0, 7fr); gap: 40px; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cookie-inner { grid-template-columns: minmax(0, 1fr); }
  .contact-layout { gap: 40px; }
}
@media (max-width: 767px) {
  .site-header { height: 52px; }
  .header-inner { display: flex; justify-content: space-between; gap: 16px; }
  .brand { font-size: 19px; }
  .brand-mark { width: 24px; height: 24px; flex-basis: 24px; }
  .desktop-nav, .header-cta { display: none; }
  .menu-toggle { display: inline-flex; gap: 8px; align-items: center; justify-content: center; background: transparent; border: 0; padding: 8px 0 8px 8px; font-size: 13px; min-height: 44px; }
  .mobile-menu { display: flex; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 64px; }
  .hero h1 { font-size: clamp(60px, 12vw, 92px); }
  .hero-description { max-width: 560px; }
  .hero-aside { max-width: 100%; }
  .system-diagram { padding: 24px; }
  .diagram-index { margin-bottom: 24px; }
  .section-heading { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .section-heading > p:last-child { max-width: 540px; }
  .guide-grid { grid-template-columns: minmax(0, 1fr); }
  .data-card-wide { grid-column: auto; }
  .data-card-wide .card-content { display: flex; gap: 24px; }
  .card-stats strong { font-size: 28px; }
  .card-content h3 { font-size: 36px; }
  .approach { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .page-hero h1 { font-size: clamp(44px, 8.4vw, 64px); }
  .article-layout { grid-template-columns: minmax(0, 1fr); gap: 64px; }
  .article-sidebar .card-content { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-sidebar .card-content h2 { grid-column: 1 / -1; }
  .legal-prose { margin-inline: 0; }
  th, td { padding: 16px; font-size: 13px; }
  .contact-layout { grid-template-columns: minmax(0, 1fr); gap: 64px; }
  .contact-details { gap: 40px; }
  .footer-grid { gap: 40px 24px; }
  .cookie-actions { gap: 8px; }
  .cookie-actions .button { flex: 1 1 180px; }
  .cookie-actions .text-button { flex: 1 1 100%; }
}
@media (max-width: 399px) {
  .container, .header-inner, .cookie-inner { width: calc(100% - 32px); }
  .brand { font-size: 17px; }
  .brand-mark { width: 20px; height: 20px; flex-basis: 20px; }
  .header-inner { gap: 8px; }
  .menu-toggle { font-size: 12px; gap: 4px; }
  .hero h1 { font-size: 52px; }
  .page-hero h1 { font-size: 40px; }
  .card-content, .card-stats, .system-diagram, .draft-panel { padding: 16px; }
  .card-stats { gap: 24px; }
  .card-stats strong { font-size: 21px; }
  .card-stats span { font-size: 11px; }
  .card-content h3 { font-size: 30px; }
  .button { padding: 16px; gap: 16px; }
  .article-sidebar .card-content { grid-template-columns: minmax(0, 1fr); }
  .form-row { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .contact-email { font-size: 18px; }
  .prose h2 { font-size: 28px; }
  th, td { padding: 16px; font-size: 12px; }
  .cookie-options { align-items: flex-start; flex-direction: column; }
  .cookie-options p { flex-basis: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; transform: none !important; }
  .skip-link { top: -160px; }
  .skip-link:focus { top: 8px; }
}
@media print {
  .site-header, .site-footer, .cookie-banner, .article-sidebar, .skip-link, .article-next { display: none !important; }
  body { background: white; color: black; font-size: 11pt; }
  .container { width: 100%; }
  .page-hero { padding-block: 24px; }
  .article-layout, .contact-layout { display: block; margin-top: 24px; }
  .prose section + section { margin-top: 24px; }
  .legal-prose { max-width: none; margin-top: 24px; }
  h1 { font-size: 36pt !important; }
  h2 { break-after: avoid; }
  .data-card, tr { break-inside: avoid; }
}