/* SICG.co.uk — Modernist token sheet (design system) + page styles.
   Tokens are the source of truth; page styles reference them via var(--*). */

/* Archivo, self-hosted variable font (latin subset), replaces the design
   system's Google Fonts @import. One file covers weights 400–800. */
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("assets/fonts/archivo-var-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201e1d;
  --color-accent: #ec3013;
  --color-accent-2: #e15b47;
  --color-divider: color-mix(in srgb, #201e1d 40%, transparent);

  /* Tonal ramps — generated in OKLCH on one shared lightness scale, so the
     same step of any role matches the others in visual value. */
  --color-neutral-100: #f8f4f4;
  --color-neutral-200: #eae7e7;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-500: #9b9797;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;
  --color-neutral-800: #444141;
  --color-neutral-900: #2d2b2b;

  --color-accent-100: #fff2ef;
  --color-accent-200: #ffe0d9;
  --color-accent-300: #ffc4b8;
  --color-accent-400: #ff9783;
  --color-accent-500: #ff563c;
  --color-accent-600: #dd2b0f;
  --color-accent-700: #ae1800;
  --color-accent-800: #7c1405;
  --color-accent-900: #4d170e;

  --font-heading: "Archivo", system-ui, sans-serif;
  --font-heading-weight: 800;
  --font-body: "Archivo", system-ui, sans-serif;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;

  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;

  /* On-dark ink-band tints: --color-bg at fixed alphas, matching the design
     reference. Body copy on the dark band never drops below .7. */
  --on-dark-body: rgba(243, 242, 242, 0.78);
  --on-dark-secondary: rgba(243, 242, 242, 0.7);
  --on-dark-label: rgba(243, 242, 242, 0.6);
  --on-dark-rule: rgba(243, 242, 242, 0.28);
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
}
p { margin: 0 0 var(--space-3); }
a { color: var(--color-accent-700); text-underline-offset: 3px; }
a:hover { color: var(--color-accent-800); }
img { display: block; max-width: 100%; }
.grayscale { filter: grayscale(1) contrast(1.08); }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

/* ══════════════════════════════════════════════════════════════════════════
   Page styles — SICG single page, "Field" direction (1c).
   Desktop-first; breakpoints at 1099px, 759px, 600px, per build spec §7.
   ══════════════════════════════════════════════════════════════════════ */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14px;
  padding: 12px 18px;
}
.skip-link:focus-visible { left: 0; color: var(--color-bg); }

.container { max-width: 1360px; margin-inline: auto; padding-inline: 52px; }

.top-edge { height: 6px; background: var(--color-accent); }

section { scroll-margin-top: 84px; }

.section { padding-block: 88px 80px; }
.section-band { border-top: 2px solid var(--color-divider); }

/* — header — */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 2px solid var(--color-divider);
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 14px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  text-decoration: none;
  color: var(--color-text);
  padding-block: 6px;
}
.brand:hover { color: var(--color-text); }
.brand-mark {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: 0.12em;
}
.brand-tag {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-neutral-700);
}
.nav-group { display: flex; align-items: center; gap: 28px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  padding-block: 12px;
}
.nav-links a:hover { color: var(--color-accent-700); }
.nav-cta {
  border: 2px solid var(--color-text);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 13px;
  padding: 9px 16px;
  text-decoration: none;
}
.nav-cta:hover { background: var(--color-text); color: var(--color-bg); }
.nav-toggle {
  display: none;
  border: 2px solid var(--color-text);
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 13px;
  padding: 9px 16px;
  min-height: 44px;
  cursor: pointer;
}

/* — buttons — */

.btn-solid {
  display: inline-block;
  background: var(--color-accent-700);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 15px;
  padding: 16px 24px;
  text-decoration: none;
}
.btn-solid:hover { background: var(--color-accent-800); color: var(--color-bg); }
.btn-outline {
  display: inline-block;
  border: 2px solid var(--color-text);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 15px;
  padding: 14px 24px;
  text-decoration: none;
}
.btn-outline:hover { background: var(--color-text); color: var(--color-bg); }

/* — hero — */

.hero { padding-block: 96px 68px; }
.kicker {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-neutral-700);
  margin-bottom: 30px;
}
.hero h1 {
  font-size: 72px;
  line-height: 1.02;
  letter-spacing: -0.035em;
  max-width: 17ch;
}
.lede {
  margin: 34px 0 0;
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-neutral-800);
  max-width: 60ch;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }

/* — grid-lines pattern: 2px gap over a divider background, 2px wrapper
     border. This draws every rule and survives any wrap; no per-cell
     borders anywhere. — */

.grid-lines {
  display: grid;
  gap: 2px;
  background: var(--color-divider);
  border: 2px solid var(--color-divider);
}
.cell-surface { background: var(--color-surface); }
.cell-ground { background: var(--color-bg); }

/* — stat band — */

.statband {
  background: var(--color-surface);
  border-block: 2px solid var(--color-divider);
}
.statband-inner { padding-inline: 0; }
.statband .grid-lines {
  grid-template-columns: repeat(4, 1fr);
  border: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}
.stat { padding: 38px 32px; }
.stat-figure {
  font-family: var(--font-heading);
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1;
}
.stat-note {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--color-neutral-700);
  margin-top: 10px;
}

/* — section head (marker + h2 + intro) — */

.section-head {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 48px;
}
.marker { width: 44px; height: 6px; background: var(--color-accent); margin-bottom: 18px; }
.section-head h2 {
  font-size: 40px;
  letter-spacing: -0.025em;
  line-height: 1.05;
}
.section-intro {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--color-neutral-800);
  max-width: 62ch;
}

/* — services — */

.services-grid { grid-template-columns: repeat(3, 1fr); }
.service { padding: 34px 30px; }
.service-number {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--color-accent-700);
  margin-bottom: 16px;
}
.service h3 {
  margin: 0 0 12px;
  font-size: 20px;
  line-height: 1.18;
}
.service p { margin: 0; font-size: 14.5px; line-height: 1.62; color: var(--color-neutral-800); }

/* — AI band (ink) — */

.band-dark { background: var(--color-text); color: var(--color-bg); }
.band-dark .marker { background: var(--color-accent-500); }
.band-dark .section-intro { color: var(--on-dark-body); }
.band-dark :focus-visible { outline-color: var(--color-accent-500); }

.ai-rows {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--on-dark-rule);
  border: 2px solid var(--on-dark-rule);
}
.ai-row { background: var(--color-text); padding: 28px; }
.ai-heading { margin: 0; }
.ai-trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  width: 100%;
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.ai-title {
  font-family: var(--font-heading);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.2;
  flex: 1 1 300px;
}
.ai-summary {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--on-dark-secondary);
  flex: 2 1 340px;
}
.ai-glyph {
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
  color: var(--color-accent-500);
  flex: 0 0 auto;
  margin-left: auto;
}
.ai-panel {
  margin-top: 22px;
  border-top: 2px solid var(--on-dark-rule);
  padding-top: 22px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 32px;
}
.ai-panel[hidden] { display: none; }
.ai-panel-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-dark-label);
}
.ai-panel-body { font-size: 14.5px; line-height: 1.68; color: var(--on-dark-body); min-width: 0; }
.ai-panel-body p { margin: 0 0 14px; }
.ai-panel-body p:last-child { margin-bottom: 0; }

/* — AI Row 1 vignette (fictional cockpit slice + operating loop) — */

.vignette-wrap { grid-column: 1 / -1; margin-top: 6px; }
.vignette {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1.3fr;
  gap: 2px;
  background: var(--on-dark-rule);
  border: 2px solid var(--on-dark-rule);
}
.vg-panel { background: var(--color-text); padding: 18px 20px 20px; min-width: 0; }
.vg-label {
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-dark-label);
  margin-bottom: 14px;
}
.vg-row, .vg-sig {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--on-dark-body);
  padding-block: 5px;
}
.vg-row + .vg-row, .vg-sig + .vg-sig { border-top: 2px solid rgba(243, 242, 242, 0.12); }
.vg-t {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--color-accent-500);
  flex: 0 0 4.5em;
  white-space: nowrap;
}
.vg-name { flex: 1 1 auto; min-width: 0; }
.vg-val {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 12.5px;
  color: var(--color-bg);
  margin-left: auto;
}
.vg-bar {
  flex: 1 1 60px;
  height: 6px;
  background: rgba(243, 242, 242, 0.14);
  align-self: center;
}
.vg-bar > span { display: block; height: 100%; background: rgba(243, 242, 242, 0.55); }
.vg-headline {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14.5px;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--color-bg);
}
.vg-action {
  margin: 0;
  display: flex;
  gap: 10px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--on-dark-body);
}
.vg-n {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 11px;
  color: var(--color-accent-500);
  flex: 0 0 auto;
  padding-top: 2px;
}
.vg-caption {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--on-dark-label);
}
.ai-flow {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 2px solid var(--on-dark-rule);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  font-family: var(--font-heading);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-dark-body);
}
.ai-flow-arrow { color: var(--color-accent-500); }

/* — engagement models — */

.engage-grid { grid-template-columns: repeat(3, 1fr); }
.engage { padding: 32px 28px 34px; }
.engage-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}
.engage-kind {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-700);
}
.engage-term { font-size: 12px; color: var(--color-neutral-700); }
.engage h3 { margin: 0 0 10px; font-size: 20px; }
.engage p { margin: 0; font-size: 14.5px; line-height: 1.62; color: var(--color-neutral-800); }

/* — results — */

.band-surface { background: var(--color-surface); }
.results-grid { grid-template-columns: repeat(2, 1fr); }
.case { padding: 32px 30px 34px; }
.case-context {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  margin-bottom: 12px;
}
.case h3 {
  margin: 0 0 10px;
  font-size: 21px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.case > p { margin: 0 0 22px; font-size: 14.5px; line-height: 1.62; color: var(--color-neutral-800); }
.case-result {
  border-top: 2px solid var(--color-divider);
  padding-top: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px;
}
.case-figure {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}
.case-note {
  font-size: 12.5px;
  color: var(--color-neutral-700);
  line-height: 1.45;
  flex: 1 1 140px;
}

/* — sectors — */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0 0 56px;
  padding: 0;
}
.chip {
  border: 2px solid var(--color-divider);
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 500;
}
.roll-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-neutral-700);
  margin-bottom: 20px;
}
.roll-grid { grid-template-columns: repeat(5, 1fr); }
.roll { padding: 22px 20px 24px; }
.roll-sector {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  margin-bottom: 12px;
}
.roll-names { font-size: 14.5px; line-height: 1.9; }

/* — principal — */

.principal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px;
}
.principal-grid h2 {
  font-size: 40px;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-bottom: 28px;
}
.principal-grid p { margin: 0 0 16px; font-size: 16.5px; line-height: 1.65; color: var(--color-neutral-800); }
.principal-grid p:last-child { margin-bottom: 0; }
.principal-grid strong { color: var(--color-text); font-weight: 600; }
.principal-link { font-size: 15px; font-weight: 600; }
.pull-quote-wrap { display: flex; align-items: center; }
.pull-quote {
  margin: 0;
  border-left: 6px solid var(--color-accent);
  padding-left: 32px;
  font-family: var(--font-heading);
  font-size: 27px;
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
}

/* — closing field (accent-700; all type on it full-opacity --color-bg) — */

.field-red { background: var(--color-accent-700); color: var(--color-bg); }
.field-red .container {
  padding-block: 92px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px;
  align-items: start;
}
.field-red h2 {
  margin: 0 0 18px;
  font-size: 56px;
  letter-spacing: -0.04em;
  line-height: 0.98;
}
.field-red p { color: var(--color-bg); }
.contact-lede { margin: 0 0 32px; font-size: 17px; line-height: 1.6; max-width: 52ch; }
.btn-ink {
  display: inline-block;
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 16px;
  padding: 18px 28px;
  text-decoration: none;
}
.btn-ink:hover { background: var(--color-bg); color: var(--color-text); }
.field-red :focus-visible { outline-color: var(--color-bg); }
.next-steps { border-left: 6px solid rgba(243, 242, 242, 0.5); padding-left: 32px; }
.next-steps-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.next-steps p { margin: 0 0 14px; font-size: 15px; line-height: 1.65; }
.next-steps p:last-child { margin-bottom: 0; }

/* — footer — */

.site-footer { border-top: 2px solid var(--color-divider); }
.site-footer .container {
  padding-block: 26px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px 32px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--color-neutral-700);
}
.footer-legal { display: flex; flex-direction: column; gap: 3px; }
.site-footer a { font-weight: 600; }

/* ══════════════════════════════════════════════════════════════════════════
   760–1099px — 2-up grids; hero H1 ~48px; AI title above summary.
   ══════════════════════════════════════════════════════════════════════ */

@media (max-width: 1099px) {
  .container { padding-inline: 36px; }
  .hero h1 { font-size: 48px; }
  .statband .grid-lines { grid-template-columns: repeat(2, 1fr); }
  .services-grid,
  .engage-grid,
  .roll-grid { grid-template-columns: repeat(2, 1fr); }
  /* odd last cell spans the row so no bare divider ground shows through */
  .services-grid > :last-child:nth-child(odd),
  .engage-grid > :last-child:nth-child(odd),
  .roll-grid > :last-child:nth-child(odd) { grid-column: span 2; }
  .ai-trigger { align-items: start; }
  .ai-title { flex: 1 1 100%; }
  .ai-summary { flex: 1 1 auto; }
  .ai-glyph { align-self: start; }
}

/* ══════════════════════════════════════════════════════════════════════════
   ≤759px — single column; nav collapses behind a labelled toggle.
   ══════════════════════════════════════════════════════════════════════ */

@media (max-width: 759px) {
  .container { padding-inline: 20px; }
  .section { padding-block: 56px; }
  .hero { padding-block: 56px 48px; }
  section { scroll-margin-top: 132px; }

  .site-nav { flex-wrap: wrap; row-gap: 0; }
  .nav-toggle { display: inline-block; }
  .nav-group { gap: 12px; }
  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding-block: 6px 14px;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { font-size: 15px; padding-block: 11px; width: 100%; }
  .nav-cta { min-height: 44px; display: inline-flex; align-items: center; }

  .section-head,
  .principal-grid,
  .field-red .container { grid-template-columns: 1fr; }
  .section-head { gap: 20px; margin-bottom: 36px; }
  .statband .grid-lines,
  .services-grid,
  .engage-grid,
  .results-grid,
  .roll-grid { grid-template-columns: 1fr; }
  .services-grid > :last-child:nth-child(odd),
  .engage-grid > :last-child:nth-child(odd),
  .roll-grid > :last-child:nth-child(odd) { grid-column: auto; }

  .stat { padding: 28px 20px; }
  .service, .case { padding: 26px 22px 28px; }
  .engage { padding: 24px 20px 26px; }
  .ai-row { padding: 22px; }
  .ai-trigger { flex-direction: column; align-items: stretch; gap: 10px; }
  .ai-title { flex: none; }
  .ai-summary { flex: none; }
  .ai-glyph { margin-left: 0; align-self: flex-end; }
  .ai-panel { grid-template-columns: 1fr; gap: 20px; }
  .vignette { grid-template-columns: 1fr; }
  .pull-quote { padding-left: 20px; font-size: 21px; }
  .next-steps { padding-left: 20px; }
  .field-red .container { padding-block: 56px; gap: 36px; }
  .chips { margin-bottom: 40px; }
}

/* ══════════════════════════════════════════════════════════════════════════
   ≤600px — mobile type scale.
   ══════════════════════════════════════════════════════════════════════ */

@media (max-width: 600px) {
  .hero h1 { font-size: 36px; }
  .lede { font-size: 16px; margin-top: 24px; }
  .section-head h2, .principal-grid h2 { font-size: 28px; }
  .field-red h2 { font-size: 32px; }
  .stat-figure { font-size: 34px; }
  .ai-title { font-size: 18px; }
}