/* Dataframe — dataframe.uk
   Layout: a 12-column grid made visible. Faint column rules sit behind the hero,
   and content snaps to columns like cells in a table. One bold device recurs:
   the selected cell (sky-blue fill, navy outline, fill handle), echoing the logo's
   light cells with navy centres. Colours come from the Dataframe logo and decks. */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url("../fonts/bricolage-grotesque-latin.woff2") format("woff2");
  font-weight: 200 800;
  font-stretch: 75% 100%;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("../fonts/instrument-sans-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-stretch: 75% 100%;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fragment Mono";
  src: url("../fonts/fragment-mono-latin.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Colour: navy and light blue from the logo; slate, petrol and sky from the decks */
  --paper: #F4F7FB;
  --surface: #FFFFFF;
  --stripe: #F6F9FC;
  --ink: #0E2841;
  --ink-muted: #44546A;
  --rule: #D9E1EB;
  --rule-strong: #AEBBCB;
  --grid: #E2E9F2;
  --accent: #104861;
  --on-accent: #FFFFFF;
  --highlight: #83CCEB;
  --on-highlight: #0E2841;
  --deep: #0E2841;
  --on-deep: #EEF4FB;
  --on-deep-muted: #A9BCD2;
  --deep-rule: #263F5C;
  --swatch-ring: rgba(14, 40, 65, .18);
  --shadow: 0 1px 0 rgba(14, 40, 65, .04), 0 28px 56px -36px rgba(14, 40, 65, .4);
  --header-bg: rgba(244, 247, 251, .88);

  /* Logo colours stay the same in both themes */
  --logo-ink: #0E2841;
  --logo-frame: #0E2841;
  --logo-cell: #DAE9F8;

  /* One colour per service, dark to light: navy, petrol, mid blue, sky, pale sky */
  --v1: #0E2841;
  --v2: #104861;
  --v3: #3F8DB3;
  --v4: #83CCEB;
  --v5: #C0E6F5;

  /* Type */
  --font-display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --font-body: "Instrument Sans", "Helvetica Neue", Arial, system-ui, sans-serif;
  --font-mono: "Fragment Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --step--1: .8125rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: clamp(1.375rem, 1.2rem + .7vw, 1.75rem);
  --step-3: clamp(1.875rem, 1.35rem + 2.1vw, 2.875rem);
  --step-4: clamp(2.375rem, 1.1rem + 5.2vw, 5.5rem);

  /* Space */
  --gutter: clamp(20px, 4vw, 40px);
  --max: 1240px;
  --col-gap: clamp(16px, 2vw, 28px);
  --section: clamp(72px, 9vw, 128px);
  --header-h: 64px;
  --radius: 4px;

  --panel: var(--surface);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #07111D;
    --surface: #0C1A2A;
    --stripe: #0A1624;
    --ink: #E6EEF7;
    --ink-muted: #A3B4C8;
    --rule: #1A2C41;
    --rule-strong: #2F4761;
    --grid: #0F1E30;
    --accent: #83CCEB;
    --on-accent: #0E2841;
    --deep: #0E2841;
    --on-deep: #EEF4FB;
    --on-deep-muted: #A3B8CF;
    --deep-rule: #233D5B;
    --swatch-ring: rgba(230, 238, 247, .3);
    --v1: #2E5A86;
    --v2: #1F7192;
    --logo-frame: #1F7192;
    --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 28px 56px -32px rgba(0, 0, 0, .8);
    --header-bg: rgba(7, 17, 29, .86);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #07111D;
  --surface: #0C1A2A;
  --stripe: #0A1624;
  --ink: #E6EEF7;
  --ink-muted: #A3B4C8;
  --rule: #1A2C41;
  --rule-strong: #2F4761;
  --grid: #0F1E30;
  --accent: #83CCEB;
  --on-accent: #0E2841;
  --deep: #0E2841;
  --on-deep: #EEF4FB;
  --on-deep-muted: #A3B8CF;
  --deep-rule: #233D5B;
  --swatch-ring: rgba(230, 238, 247, .3);
  --v1: #2E5A86;
  --v2: #1F7192;
  --logo-frame: #1F7192;
  --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 28px 56px -32px rgba(0, 0, 0, .8);
  --header-bg: rgba(7, 17, 29, .86);
  color-scheme: dark;
}

/* ---------- Base ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { max-width: 100%; }
[hidden] { display: none !important; }

a { color: inherit; }
.prose a, .legal a, .site-footer__legal a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 16px; top: -100px;
  z-index: 100;
  padding: .6rem 1rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}

/* ---------- Type ---------- */

.label {
  display: flex;
  align-items: center;
  gap: .65em;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  line-height: 1.2;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.label::before {
  content: "";
  flex: none;
  width: .7em;
  height: .7em;
  background: var(--accent);
}

.h2 {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 640;
  font-stretch: 90%;
  line-height: 1.04;
  letter-spacing: -.022em;
  text-wrap: balance;
}

.h3 {
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 640;
  font-stretch: 94%;
  line-height: 1.2;
  letter-spacing: -.01em;
  text-wrap: balance;
}

.prose {
  display: grid;
  gap: 1.1em;
  font-size: clamp(1.0625rem, 1rem + .45vw, 1.25rem);
  line-height: 1.6;
  max-width: 62ch;
}

/* ---------- Buttons ---------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55em;
  min-height: 48px;
  padding: .8em 1.3em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: 600 1rem/1.1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--accent); color: var(--on-accent); }
.btn--ghost { border-color: var(--rule-strong); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); }
.btn--sm { min-height: 40px; padding: .55em 1em; font-size: .9375rem; }
.btn__arrow { transition: transform .15s ease; }
.btn:hover .btn__arrow { transform: translateX(3px); }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--rule);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-right: auto;
  color: var(--ink);
  text-decoration: none;
}
.brand__logo { flex: none; display: block; }

.site-nav ul { display: flex; gap: 28px; }
.site-nav a {
  font-size: .9375rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
  transition: color .15s ease;
}
.site-nav a:hover { color: var(--ink); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 20px;
  height: 1.6px;
  margin-inline: auto;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before, .nav-toggle__bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.is-open .nav-toggle__bars { background: transparent; }
.is-open .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.is-open .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 880px) {
  .js .nav-toggle { display: block; }
  .js .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 8px max(var(--gutter), env(safe-area-inset-right, 0px)) 20px max(var(--gutter), env(safe-area-inset-left, 0px));
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
  }
  .js .is-open .site-nav { display: block; }
  .js .site-nav ul { flex-direction: column; gap: 0; }
  .js .site-nav a {
    display: block;
    padding: .85rem 0;
    border-bottom: 1px solid var(--rule);
    font-size: 1.0625rem;
    color: var(--ink);
  }

  html:not(.js) .site-header__inner { flex-wrap: wrap; height: auto; padding-block: 12px; row-gap: 8px; }
  html:not(.js) .site-nav { order: 3; width: 100%; overflow-x: auto; }
  html:not(.js) .site-nav ul { gap: 20px; }
}
.site-header__cta { white-space: nowrap; }
/* "Get in touch" is the only route to Contact in the header, so it never hides; the logo shrinks instead */
@media (max-width: 600px) {
  .site-header__inner { gap: 14px; }
  .site-header .brand__logo { width: 118px; height: 28px; }
}
@media (max-width: 380px) {
  .site-header .brand__logo { width: 101px; height: 24px; }
}

/* ---------- Hero ---------- */

.hero { position: relative; overflow: hidden; }

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: center;
  row-gap: 56px;
  padding-block: clamp(56px, 8vw, 112px) clamp(56px, 7vw, 96px);
}
.hero__grid::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: max(var(--gutter), env(safe-area-inset-left, 0px));
  right: max(var(--gutter), env(safe-area-inset-right, 0px));
  border-right: 1px solid var(--grid);
  background-image: repeating-linear-gradient(to right, var(--grid) 0 1px, transparent 1px calc(100% / 12));
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .55) 55%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .55) 55%, transparent 100%);
  pointer-events: none;
}

.hero__copy {
  position: relative;
  grid-column: 1 / span 7;
  display: grid;
  gap: 28px;
  padding-right: clamp(0px, 3vw, 48px);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--step-4);
  font-weight: 700;
  font-stretch: 88%;
  line-height: .98;
  letter-spacing: -.022em;
}
.hero__line { display: block; }

/* The selected cell: fill, 2px outline and a fill handle at the bottom-right corner */
.cell-select {
  position: relative;
  display: inline-block;
  margin-top: .14em;
  padding: .04em .16em .08em;
  background: var(--highlight);
  color: var(--on-highlight);
  box-shadow: 0 0 0 2px var(--ink);
  white-space: nowrap;
}
.cell-select::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -6px;
  width: 10px;
  height: 10px;
  background: var(--ink);
  border: 2px solid var(--paper);
}

.hero__lead {
  max-width: 54ch;
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--ink-muted);
}

.hero__df {
  position: relative;
  grid-column: 8 / -1;
}

/* ---------- Dataframe table component ---------- */

.df {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.df__caption {
  padding: .8rem 1rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}
.df__var { color: var(--accent); }
.df__scroll { overflow-x: auto; }
.df table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9375rem;
  line-height: 1.4;
}
.df th, .df td {
  padding: .8rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
}
.df thead th {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 400;
  color: var(--ink-muted);
  border-bottom-color: var(--rule-strong);
  background: var(--surface);
}
.df tbody th {
  font-weight: 600;
}
.df tbody tr:nth-child(even) { background: var(--stripe); }
.df tbody tr:last-child th, .df tbody tr:last-child td { border-bottom: 0; }
.df td { color: var(--ink-muted); }

.df--nav tbody th {
  width: 3.4em;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 400;
  color: var(--ink-muted);
  padding-top: 1rem;
}
.df--nav td:nth-child(2) { width: 52%; }
.df--nav a {
  display: inline-flex;
  align-items: baseline;
  gap: .6em;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}
.df--nav a:hover { text-decoration: underline; text-underline-offset: .2em; text-decoration-thickness: 1px; }
.df--nav tbody tr { cursor: pointer; transition: background-color .15s ease; }
.df--nav tbody tr:hover { background: color-mix(in srgb, var(--highlight) 22%, var(--surface)); }

.df__shape {
  padding: .7rem 1rem;
  border-top: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}

@media (prefers-reduced-motion: no-preference) {
  .df--live tbody tr {
    animation: row-scan 1s ease-out;
    animation-delay: calc(var(--i, 0) * 150ms + 350ms);
  }
}
@keyframes row-scan {
  30% { background-color: color-mix(in srgb, var(--highlight) 50%, var(--surface)); }
}

.df--wide tbody th {
  width: 34%;
  color: var(--ink);
}
.df--wide td { color: var(--ink); font-family: var(--font-mono); font-size: .875rem; line-height: 1.6; }

.swatch {
  flex: none;
  display: inline-block;
  width: .72em;
  height: .72em;
  background: var(--swatch, var(--accent));
  box-shadow: inset 0 0 0 1px var(--swatch-ring);
}

/* ---------- Proof strip ---------- */

.proof {
  background: var(--surface);
  border-block: 1px solid var(--rule);
}
.proof__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.proof__list li {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding-block: 1.15rem;
  font-weight: 600;
  font-size: 1rem;
}
.proof__list li + li { padding-left: var(--col-gap); border-left: 1px solid var(--rule); }
.proof__list li::before {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  border: 1.5px solid var(--accent);
}

/* ---------- Sections ---------- */

.section { padding-block: var(--section); }
.section--alt { background: var(--surface); --panel: var(--paper); }
.section--alt .df { background: var(--surface); }

.section__inner {
  display: grid;
  gap: clamp(48px, 6vw, 80px);
}

.section-head {
  display: grid;
  gap: 18px;
  max-width: 48rem;
}
.section-head__intro {
  max-width: 60ch;
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--ink-muted);
}

.split {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
  row-gap: 32px;
}
.split__head {
  grid-column: 1 / span 5;
  display: grid;
  gap: 18px;
  align-content: start;
}
.split__body { grid-column: 7 / -1; }
@media (min-width: 961px) {
  .split__head { position: sticky; top: calc(var(--header-h) + 32px); align-self: start; }
}

/* Positioning pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--col-gap);
}
.pillars li {
  display: grid;
  gap: 10px;
  align-content: start;
  padding-top: 20px;
  border-top: 2px solid var(--ink);
}
.pillars p { color: var(--ink-muted); }

/* ---------- Services ---------- */

.services { display: grid; }

.service {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
  row-gap: 28px;
  padding-block: clamp(40px, 5vw, 72px);
  border-top: 1px solid var(--rule);
}
.service:first-child { border-top-color: var(--ink); }
.service:last-child { padding-bottom: 0; }

.service__aside {
  grid-column: 1 / span 4;
  align-self: start;
  position: sticky;
  top: calc(var(--header-h) + 32px);
  display: grid;
  gap: 14px;
}
.service__index {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}
.service__index .swatch { width: 14px; height: 14px; }
.service__title {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 650;
  font-stretch: 90%;
  line-height: 1.1;
  letter-spacing: -.015em;
  text-wrap: balance;
}
.service__summary { color: var(--ink-muted); max-width: 36ch; }

.service__body {
  grid-column: 6 / -1;
  display: grid;
  gap: 36px;
  min-width: 0;
}
.service__headline {
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 1.2rem + 1.5vw, 2.375rem);
  font-weight: 600;
  font-stretch: 90%;
  line-height: 1.08;
  letter-spacing: -.02em;
  text-wrap: balance;
  margin-bottom: -12px;
}
.service__intro {
  font-size: 1.125rem;
  line-height: 1.65;
  max-width: 64ch;
}

.block { display: grid; gap: 16px; }
.block__title {
  padding-bottom: .65rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 400;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.ticks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .7rem 2rem;
}
.ticks li {
  position: relative;
  padding-left: 1.4em;
  line-height: 1.5;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .45em;
  width: .6em;
  height: .6em;
  border: 1.5px solid var(--swatch, var(--accent));
  background: color-mix(in srgb, var(--swatch, var(--accent)) 25%, transparent);
}

.outcomes {
  display: grid;
  gap: 0;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.outcomes .block__title { padding: .85rem 1.1rem; }
.outcomes ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.outcomes li {
  padding: 1rem 1.1rem 1.15rem;
  font-weight: 600;
  line-height: 1.45;
}
.outcomes li + li { border-left: 1px solid var(--rule); }

.tech { display: grid; gap: 14px; }
.inline-list {
  display: flex;
  flex-wrap: wrap;
  row-gap: .35rem;
  font-family: var(--font-mono);
  font-size: .875rem;
  line-height: 1.6;
  color: var(--ink);
}
.inline-list li:not(:last-child)::after {
  content: "·";
  padding-inline: .65em;
  color: var(--rule-strong);
}

.steps { display: grid; }
.steps li {
  position: relative;
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  column-gap: 1rem;
  padding-bottom: 1.25rem;
}
.steps li:last-child { padding-bottom: 0; }
.steps li:not(:last-child)::before {
  content: "";
  position: absolute;
  left: calc(1.125rem - .5px);
  top: 2.25rem;
  bottom: 0;
  width: 1px;
  background: var(--rule-strong);
}
.steps__n {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--rule-strong);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: var(--step--1);
}
.steps p { padding-top: .35rem; line-height: 1.55; }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chips li {
  padding: .4rem .8rem;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  font-size: .9375rem;
  line-height: 1.3;
}

.note {
  padding: 1rem 1.15rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  line-height: 1.55;
}

/* Row lists (examples, engagements) */
.rows { border-top: 1px solid var(--rule-strong); }
.rows__item {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: var(--col-gap);
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--rule);
}
.rows dt {
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 640;
  font-stretch: 94%;
  line-height: 1.25;
  letter-spacing: -.01em;
}
.rows dd { color: var(--ink-muted); }
.rows--compact { border-top: 0; }
.rows--compact .rows__item { padding-block: .9rem; }
.rows--compact dt { font-size: 1.0625rem; }

/* ---------- How we work ---------- */

.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--col-gap);
}
.process li {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding-top: 26px;
  border-top: 1px solid var(--rule-strong);
}
.process li::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 11px;
  height: 11px;
  background: var(--ink);
}
.process li:last-child::before { background: var(--highlight); box-shadow: 0 0 0 1.5px var(--ink); }
.process__n {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.process p:last-child { color: var(--ink-muted); }

/* ---------- Why: cells ---------- */

.cells {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.cells li {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(22px, 2.6vw, 34px);
  background: var(--surface);
}
.cells p { color: var(--ink-muted); }

/* ---------- Contact ---------- */

.section--deep {
  background: var(--deep);
  color: var(--on-deep);
}
.section--deep .label { color: var(--on-deep-muted); }
.section--deep .label::before { background: var(--highlight); }

.contact {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
  row-gap: 48px;
}
.contact__intro {
  grid-column: 1 / span 5;
  display: grid;
  gap: 20px;
  align-content: start;
}
.contact__body {
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--on-deep-muted);
  max-width: 44ch;
}

/* Contact card: the email address is the call to action; company record below */
.contact__panel {
  grid-column: 7 / -1;
  align-self: start;
  color: var(--ink);
  border-color: transparent;
}
.contact__mail {
  display: grid;
  gap: 14px;
  padding: clamp(20px, 3vw, 32px) 1rem;
  border-bottom: 1px solid var(--rule-strong);
}
.contact__mail-label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.contact__email {
  justify-self: start;
  max-width: 100%;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.05rem + 2vw, 2.4rem);
  font-weight: 650;
  font-stretch: 88%;
  line-height: 1.1;
  letter-spacing: -.015em;
  overflow-wrap: anywhere;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: .16em;
  text-decoration-color: var(--rule-strong);
  transition: text-decoration-color .15s ease;
}
.contact__email:hover { text-decoration-color: var(--ink); }
.contact__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: 6px;
}
.contact__copied {
  font-size: .9375rem;
  color: var(--ink-muted);
}
/* Stays in the accessibility tree while empty, so screen readers announce the message */
.contact__copied:empty {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}
.contact__record tbody th {
  width: 38%;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 400;
  color: var(--ink-muted);
  padding-top: .95rem;
}
.contact__record td { color: var(--ink); }
.contact__record a {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}

/* ---------- Footer ---------- */

.site-footer {
  padding-block: 48px;
  border-top: 1px solid var(--rule);
  background: var(--paper);
}
.site-footer__inner { display: grid; gap: 28px; }
.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 32px;
}
.site-footer__top .brand { margin-right: 0; }
.site-footer__tagline { color: var(--ink-muted); margin-right: auto; }
.site-footer__nav ul { display: flex; flex-wrap: wrap; gap: 0 24px; }
.site-footer__nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink-muted);
  text-decoration: none;
  font-size: .9375rem;
}
.site-footer__nav a:hover { color: var(--ink); }
.site-footer__legal {
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* ---------- Simple pages (privacy, 404) ---------- */

.page {
  padding-block: clamp(56px, 8vw, 104px) var(--section);
}
.page__head {
  display: grid;
  gap: 18px;
  max-width: 48rem;
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--rule);
}
.page__title {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 650;
  font-stretch: 88%;
  line-height: 1.04;
  letter-spacing: -.025em;
  text-wrap: balance;
}
.page__meta { font-family: var(--font-mono); font-size: var(--step--1); color: var(--ink-muted); }

.legal {
  display: grid;
  gap: 1rem;
  max-width: 68ch;
}
.legal h2 {
  margin-top: 1.6rem;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 640;
  font-stretch: 92%;
  line-height: 1.15;
  letter-spacing: -.015em;
}
.legal ul { display: grid; gap: .45rem; }
.legal li { position: relative; padding-left: 1.3em; }
.legal li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .45em;
  height: .45em;
  background: var(--accent);
}

.notfound { display: grid; gap: 24px; max-width: 40rem; }
.notfound__code {
  font-family: var(--font-mono);
  font-size: .9375rem;
  color: var(--ink-muted);
}
.notfound__code .cell-select { font-family: var(--font-mono); box-shadow: 0 0 0 1.5px var(--ink); }

/* ---------- Responsive ---------- */

@media (max-width: 1080px) {
  .hero__copy { grid-column: 1 / -1; padding-right: 0; }
  .hero__df { grid-column: 1 / -1; max-width: 680px; }
}

@media (max-width: 960px) {
  .split__head, .split__body { grid-column: 1 / -1; }
  .service__aside { grid-column: 1 / -1; position: static; }
  .service__body { grid-column: 1 / -1; }
  .service__summary { max-width: 60ch; }
  .contact__intro, .contact__panel { grid-column: 1 / -1; }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
  .cells { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .proof__list { grid-template-columns: 1fr; }
  .proof__list li { padding-block: .8rem; }
  .proof__list li + li { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .pillars { grid-template-columns: 1fr; gap: 32px; }
  .ticks { grid-template-columns: 1fr; }
  .outcomes ul { grid-template-columns: 1fr; }
  .outcomes li + li { border-left: 0; border-top: 1px solid var(--rule); }
  .rows__item { grid-template-columns: 1fr; gap: .4rem; }
  .df--wide tbody th { width: 40%; }
}

@media (max-width: 600px) {
  .process { grid-template-columns: 1fr; }
  .cells { grid-template-columns: 1fr; }
  .df table { font-size: .875rem; }
  .df--nav td:nth-child(2) { width: auto; }
  .df th, .df td { padding: .7rem .7rem; }
  .df--nav tbody th { width: 2.6em; }
}

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