:root {
  --ink: #172229;
  --ink-soft: #3c4a52;
  --steel: #73858f;
  --mist: #edf0ef;
  --paper: #f8f7f2;
  --white: #ffffff;
  --warm: #c68d61;
  --warm-dark: #9d6643;
  --line: rgba(23, 34, 41, 0.14);
  --shadow: 0 28px 80px rgba(23, 34, 41, 0.12);
  --radius: 22px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea { font: inherit; }

.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 112px 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 16px; top: -100px; z-index: 1000; background: var(--white); padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .25s ease, box-shadow .25s ease, backdrop-filter .25s ease;
}
.site-header.is-scrolled { background: rgba(248,247,242,.9); box-shadow: 0 1px 0 var(--line); backdrop-filter: blur(14px); }
.header-inner { height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; letter-spacing: .08em; font-size: 13px; font-weight: 700; }
.brand-name b { color: var(--warm-dark); }
.brand-mark { position: relative; width: 30px; height: 24px; display: inline-block; }
.brand-mark span { position: absolute; top: 3px; width: 12px; height: 18px; border: 2px solid currentColor; border-radius: 999px; transform: rotate(30deg); }
.brand-mark span:first-child { left: 4px; }
.brand-mark span:last-child { right: 4px; transform: rotate(-30deg); }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { text-decoration: none; font-size: 14px; font-weight: 600; }
.site-nav a:not(.nav-cta):hover { color: var(--warm-dark); }
.nav-cta { padding: 11px 17px; border: 1px solid rgba(23,34,41,.4); border-radius: 999px; }
.nav-cta:hover { color: var(--white); background: var(--ink); border-color: var(--ink); }
.menu-button { display: none; background: none; border: 0; padding: 8px; }
.menu-button span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--ink); }

.hero { position: relative; min-height: 790px; overflow: hidden; display: flex; align-items: center; background: #e7eaeb; }
.hero-media { position: absolute; inset: 0; background: url("assets/human-machine-hero.png") center center / cover no-repeat; transform: scale(1.01); }
.hero-wash { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(239,242,241,.98) 0%, rgba(239,242,241,.93) 28%, rgba(239,242,241,.38) 50%, rgba(239,242,241,.02) 72%); }
.hero-inner { position: relative; z-index: 2; min-height: 790px; padding-top: 112px; display: grid; grid-template-columns: minmax(0, 600px) 1fr; align-items: center; }
.hero-copy { padding: 56px 0 72px; }
.eyebrow { margin: 0 0 20px; color: var(--warm-dark); font-size: 12px; font-weight: 800; letter-spacing: .17em; line-height: 1.3; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 650px; font-size: clamp(48px, 6vw, 78px); font-weight: 680; }
h1 span { color: var(--warm-dark); }
h2 { font-size: clamp(38px, 4.5vw, 62px); font-weight: 650; }
h3 { font-size: 23px; font-weight: 650; }
.hero-lead { max-width: 600px; margin: 28px 0 0; color: var(--ink-soft); font-size: 20px; line-height: 1.55; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 23px; border-radius: 999px; text-decoration: none; font-weight: 750; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--ink); box-shadow: 0 16px 34px rgba(23,34,41,.18); }
.button-primary:hover { background: var(--warm-dark); }
.button-light { color: var(--ink); background: var(--white); }
.button-light:hover { background: #f0eee8; }
.text-link { font-weight: 750; text-decoration: none; }
.text-link span { display: inline-block; margin-left: 6px; transition: transform .2s ease; }
.text-link:hover span { transform: translateX(5px); }
.hero-proof { position: absolute; left: 0; bottom: 24px; display: flex; gap: 34px; }
.hero-proof div { display: grid; grid-template-columns: auto auto; gap: 9px; align-items: center; }
.hero-proof strong { color: var(--warm-dark); font-size: 12px; }
.hero-proof span { font-size: 13px; font-weight: 700; }

.intro { background: var(--white); }
.intro-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: start; }
.intro-copy { font-size: 21px; color: var(--ink-soft); }
.intro-copy p:first-child { margin-top: 0; }
.intro-copy p:last-child { margin-bottom: 0; }
.section-heading { max-width: 850px; margin-bottom: 56px; }
.section-heading-row { max-width: none; display: flex; justify-content: space-between; gap: 80px; align-items: end; }
.section-heading-row > div { max-width: 780px; }
.section-heading-row > p { max-width: 350px; margin: 0 0 6px; color: var(--ink-soft); }

.services { background: var(--mist); }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.service-card { position: relative; min-height: 430px; padding: 36px; background: rgba(255,255,255,.72); border: 1px solid rgba(255,255,255,.9); border-radius: var(--radius); box-shadow: 0 12px 45px rgba(23,34,41,.05); transition: transform .25s ease, box-shadow .25s ease; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-number { position: absolute; right: 28px; top: 25px; color: rgba(23,34,41,.28); font-weight: 800; font-size: 12px; }
.service-icon { width: 50px; height: 50px; margin-bottom: 40px; color: var(--warm-dark); }
.service-icon svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { max-width: 380px; }
.service-card > p { color: var(--ink-soft); margin: 18px 0 25px; }
.service-card ul { margin: 0; padding: 0; list-style: none; }
.service-card li { position: relative; padding: 7px 0 7px 19px; border-top: 1px solid var(--line); font-size: 14px; font-weight: 650; }
.service-card li::before { content: ""; position: absolute; left: 0; top: 16px; width: 7px; height: 7px; border-radius: 50%; background: var(--warm); }

.bridge { background: var(--ink); color: var(--white); overflow: hidden; }
.bridge-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: center; }
.bridge-copy .eyebrow { color: #e7b68f; }
.bridge-copy > p:not(.eyebrow) { color: rgba(255,255,255,.73); font-size: 18px; }
.bridge-list { margin-top: 38px; border-top: 1px solid rgba(255,255,255,.18); }
.bridge-list > div { display: grid; grid-template-columns: 110px 1fr; gap: 22px; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.bridge-list span { color: #e7b68f; font-weight: 800; }
.bridge-list p { margin: 0; color: rgba(255,255,255,.75); }
.bridge-visual { position: relative; aspect-ratio: 1; min-height: 440px; }
.orbit { position: absolute; left: 50%; top: 50%; border: 1px solid rgba(255,255,255,.17); border-radius: 50%; transform: translate(-50%,-50%); }
.orbit-one { width: 74%; height: 74%; }
.orbit-two { width: 100%; height: 100%; }
.bridge-centre, .node { position: absolute; display: grid; place-items: center; border-radius: 50%; text-align: center; }
.bridge-centre { left: 50%; top: 50%; width: 130px; height: 130px; transform: translate(-50%,-50%); background: var(--warm); color: var(--ink); font-weight: 850; font-size: 22px; line-height: 1.05; box-shadow: 0 0 0 18px rgba(198,141,97,.12), 0 0 80px rgba(198,141,97,.28); }
.node { width: 112px; height: 112px; border: 1px solid rgba(255,255,255,.42); background: rgba(255,255,255,.08); backdrop-filter: blur(8px); font-weight: 750; }
.node-business { left: 50%; top: 0; transform: translateX(-50%); }
.node-human { left: 0; bottom: 8%; }
.node-technology { right: 0; bottom: 8%; }

.approach { background: var(--paper); }
.timeline { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; padding: 0; margin: 78px 0 0; list-style: none; }
.timeline::before { content: ""; position: absolute; left: 7%; right: 7%; top: 24px; height: 1px; background: var(--line); }
.timeline li { position: relative; }
.timeline-marker { position: relative; z-index: 2; width: 48px; height: 48px; display: grid; place-items: center; margin-bottom: 31px; border: 1px solid var(--ink); border-radius: 50%; background: var(--paper); font-weight: 850; }
.timeline h3 { margin-bottom: 14px; }
.timeline p { color: var(--ink-soft); margin: 0; }

.principles { background: var(--white); }
.principle-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.principle-grid article { min-height: 260px; padding: 37px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principle-grid article > span { display: block; margin-bottom: 46px; color: var(--warm-dark); font-size: 12px; font-weight: 850; }
.principle-grid p { max-width: 470px; color: var(--ink-soft); }

.contact { background: var(--paper); }
.contact-panel { display: grid; grid-template-columns: 1.4fr .6fr; gap: 70px; align-items: end; padding: 70px; border-radius: 32px; color: var(--white); background: linear-gradient(125deg, #1a272e, #2d3f48); box-shadow: var(--shadow); }
.contact-panel .eyebrow { color: #e7b68f; }
.contact-panel h2 { max-width: 780px; }
.contact-panel > div > p:not(.eyebrow) { max-width: 680px; color: rgba(255,255,255,.72); font-size: 18px; }
.contact-actions { text-align: right; }
.contact-actions p { margin: 14px 0 0; color: rgba(255,255,255,.54); font-size: 12px; }

.site-footer { padding: 35px 0; background: var(--paper); border-top: 1px solid var(--line); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--ink-soft); font-size: 13px; }
.brand-footer { color: var(--ink); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 980px) {
  .section { padding: 86px 0; }
  .menu-button { display: block; position: relative; z-index: 102; }
  .site-nav { position: fixed; inset: 0; z-index: 101; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 26px; background: rgba(248,247,242,.98); opacity: 0; pointer-events: none; transform: translateY(-12px); transition: opacity .2s ease, transform .2s ease; }
  .site-nav.is-open { opacity: 1; pointer-events: auto; transform: none; }
  .site-nav a { font-size: 20px; }
  .hero { min-height: 760px; }
  .hero-media { background-position: 57% center; }
  .hero-wash { background: linear-gradient(90deg, rgba(239,242,241,.97), rgba(239,242,241,.82) 52%, rgba(239,242,241,.13)); }
  .hero-inner { min-height: 760px; grid-template-columns: 1fr; }
  .hero-copy { max-width: 610px; }
  .intro-grid, .bridge-grid { grid-template-columns: 1fr; gap: 60px; }
  .bridge-visual { width: min(100%, 520px); margin-inline: auto; }
  .timeline { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
  .timeline::before { display: none; }
  .contact-panel { grid-template-columns: 1fr; padding: 54px; }
  .contact-actions { text-align: left; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 72px 0; }
  .header-inner { height: 72px; }
  .hero, .hero-inner { min-height: 760px; }
  .hero-media { background-position: 61% center; }
  .hero-wash { background: linear-gradient(180deg, rgba(239,242,241,.98) 0%, rgba(239,242,241,.94) 46%, rgba(239,242,241,.36) 72%, rgba(239,242,241,.04)); }
  .hero-inner { align-items: start; padding-top: 116px; }
  .hero-copy { padding: 30px 0 210px; }
  h1 { font-size: clamp(43px, 13vw, 60px); }
  h2 { font-size: clamp(34px, 10vw, 48px); }
  .hero-lead { font-size: 18px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .hero-proof { display: none; }
  .section-heading-row { display: block; }
  .section-heading-row > p { margin-top: 24px; }
  .service-grid, .principle-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; padding: 29px; }
  .bridge-visual { min-height: 350px; }
  .node { width: 88px; height: 88px; font-size: 12px; }
  .bridge-centre { width: 104px; height: 104px; font-size: 18px; }
  .bridge-list > div { grid-template-columns: 90px 1fr; }
  .timeline { grid-template-columns: 1fr; margin-top: 52px; }
  .timeline li { display: grid; grid-template-columns: 48px 1fr; gap: 20px; }
  .timeline-marker { margin-bottom: 0; }
  .contact-panel { padding: 38px 26px; border-radius: 23px; }
  .button-light { width: 100%; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}