:root {
    --cyan: #00AFC8;
    --cyan-deep: #008DA1;
    --lime: #B6EC2C;
    --night: #061820;
    --ink: #073142;
    --ink-2: #0B4054;
    --white: #FFFFFF;
    --off: #F7FAFB;
    --steel: #5A7480;
    --steel-on-ink: #7B95A0;
    --mist: #EDF2F4;
    --tint: #D9F2F6;
    --lime-tint: #EDFAD0;
    --text: #3C5763;
    --rule: #E1E8EB;
    --rule-ink: #12455A;
    --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
    --body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
    --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
    --max: 1160px;
    --gutter: clamp(20px, 5vw, 64px);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
  body {
    margin: 0; background: var(--white); color: var(--ink);
    font-family: var(--body); font-size: 16px; line-height: 1.55;
    -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  }
  a { color: var(--cyan-deep); text-decoration: none; }
  a:hover { color: var(--ink); }
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
  h1, h2, h3 { font-family: var(--display); font-weight: 600; margin: 0; text-wrap: balance; }
  h1 { font-size: clamp(40px, 6.2vw, 72px); line-height: 1.0; letter-spacing: -0.03em; font-weight: 700; }
  h2 { font-size: clamp(30px, 3.6vw, 40px); line-height: 1.05; letter-spacing: -0.025em; }
  h3 { font-size: 20px; line-height: 1.2; letter-spacing: -0.012em; }
  p { margin: 0; }
  .wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
  .label { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.11em; text-transform: uppercase; color: var(--steel); }
  .lede { font-size: 18px; line-height: 1.55; color: var(--text); max-width: 34em; }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    height: 48px; padding: 0 22px; border-radius: 3px; border: 0; cursor: pointer;
    font-family: var(--body); font-size: 15px; font-weight: 600;
    background: var(--cyan); color: var(--night); transition: background .15s ease;
  }
  .btn:hover { background: var(--cyan-deep); color: var(--white); }
  .btn svg { width: 16px; height: 16px; }
  .link-arrow { font-weight: 600; color: var(--ink); display: inline-flex; align-items: center; gap: 8px; }
  .link-arrow:hover { color: var(--cyan-deep); }
  .link-arrow svg { width: 16px; height: 16px; }

  /* Lockup. Colour reaches the <use> shadow tree through inherited `color`. */
  .lockup { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
  .lockup svg.mark { height: 40px; width: auto; display: block; }
  .lockup .name { font-family: var(--display); font-weight: 700; font-size: 21px; letter-spacing: -0.022em; color: var(--ink); }
  .on-ink .lockup, .on-ink .lockup .name { color: var(--white); }

  /* Nav */
  .nav { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,0.93); backdrop-filter: saturate(150%) blur(8px); border-bottom: 1px solid var(--rule); }
  .nav .wrap { max-width: none; display: flex; align-items: center; justify-content: space-between; height: 80px; gap: 24px; }
  .nav-links { display: flex; align-items: center; gap: 28px; }
  .nav-links a { color: var(--text); font-weight: 500; font-size: 15px; }
  .nav-links a:hover { color: var(--ink); }
  .nav-links a.btn, .nav-links a.btn:hover { color: var(--night); }
  .nav-links a.btn:hover { color: var(--white); }
  .nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; padding: 10px; color: var(--ink); }
  .nav-toggle svg { width: 24px; height: 24px; }
  @media (max-width: 800px) {
    .nav-toggle { display: inline-flex; }
    .nav-links { display: none; position: absolute; left: 0; right: 0; top: 80px; flex-direction: column; align-items: stretch; gap: 0; background: var(--white); border-bottom: 1px solid var(--rule); padding: 8px var(--gutter) 16px; }
    .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--rule); }
    .nav-links a:last-child { border-bottom: 0; }
    .nav-links .btn { margin-top: 12px; }
    .nav.open .nav-links { display: flex; }
  }

  /* Hero */
  .hero { padding: clamp(56px, 8vw, 104px) 0 clamp(48px, 6vw, 88px); }
  .hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: clamp(32px, 6vw, 88px); align-items: center; }
  .hero-copy { display: flex; flex-direction: column; gap: 28px; align-items: flex-start; }
  .hero-copy .label { color: var(--cyan-deep); }
  .hero-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
  @media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } }

  /* Passings grid */
  .passings { display: flex; flex-direction: column; gap: 14px; }
  .passings-grid { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 8px; }
  .passings-grid span { aspect-ratio: 1; display: block; color: var(--rule); }
  .passings-grid svg { display: block; width: 100%; height: 100%; fill: var(--mist); stroke: currentColor; stroke-width: 1.4; stroke-linejoin: round; transition: fill 1.6s ease, stroke 1.6s ease, color 1.6s ease; }
  .passings-grid span.on { color: var(--cyan); }
  .passings-grid span.on svg { fill: var(--cyan); }
  .passings-grid span.next { color: var(--lime); }
  .passings-grid span.next svg { fill: var(--lime-tint); }
  .passings-key { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--steel); }
  .passings-key i { display: inline-block; width: 14px; height: 14px; vertical-align: -2px; margin-right: 6px; color: var(--rule); }
  .passings-key svg { display: block; width: 100%; height: 100%; fill: var(--mist); stroke: currentColor; stroke-width: 1.4; stroke-linejoin: round; }
  .passings-key i.on { color: var(--cyan); } .passings-key i.on svg { fill: var(--cyan); }
  .passings-key i.next { color: var(--lime); } .passings-key i.next svg { fill: var(--lime-tint); }
  .passings-note { font-size: 14px; color: var(--text); max-width: 34em; }

  /* Sections */
  section { padding: clamp(56px, 7vw, 96px) 0; }
  section + section { border-top: 1px solid var(--rule); }
  .section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(24px, 4vw, 64px); align-items: start; margin-bottom: clamp(32px, 4vw, 56px); }
  .section-head .label { margin-bottom: 14px; display: block; }
  .section-head > .lede { margin-top: 29px; }
  @media (max-width: 760px) { .section-head { grid-template-columns: 1fr; } .section-head > .lede, .section-head > .head-right { margin-top: 0; } }

  /* Problem band */
  .problem { background: var(--mist); }
  .problem .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
  .problem h2 { max-width: 14em; }
  .problem p { color: var(--text); max-width: 34em; }
  .problem p + p { margin-top: 16px; }
  @media (max-width: 760px) { .problem .wrap { grid-template-columns: 1fr; } }

  /* Proof band. Lime on night with hairline dividers, as on the original site. */
  .figures { background: var(--night); color: var(--white); padding: clamp(48px, 6vw, 76px) 0; }
  .figures .grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .fig { padding: 4px clamp(20px, 2.4vw, 34px); border-left: 1px solid rgba(255,255,255,.15); display: flex; flex-direction: column; gap: 10px; }
  .fig:first-child { border-left: 0; padding-left: 0; }
  .fig .v { font-family: var(--display); font-weight: 700; font-size: clamp(34px, 4vw, 52px); line-height: 1; letter-spacing: -0.03em; color: var(--lime); font-variant-numeric: tabular-nums; }
  .fig .k { font-size: 15.5px; font-weight: 600; color: var(--white); line-height: 1.35; }
  .fig .s { font-size: 13.5px; color: var(--steel-on-ink); line-height: 1.45; }
  @media (max-width: 640px) { .figures .grid { grid-template-columns: 1fr; row-gap: 34px; } .fig { border-left: 0; padding-left: 0; } }

  /* The one proof point on the page, given the full width */
  .head-right { display: flex; flex-direction: column; gap: 22px; }
  .section-head > .head-right { margin-top: 29px; }
  .proof { border-left: 3px solid var(--cyan); padding-left: 20px; display: flex; flex-direction: column; gap: 10px; }
  .proof-lead {
    font-family: var(--display); font-weight: 600; letter-spacing: -0.014em;
    font-size: 20px; line-height: 1.28; color: var(--ink);
  }
  .proof p:last-child { color: var(--text); font-size: 15.5px; }
  #how .section-head { margin-bottom: 0; }

  /* The stack: twelve cards, one line each, scope at a glance */
  .stack { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
  .card {
    background: var(--white); border: 1px solid var(--rule); border-radius: 6px;
    padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 10px;
    transition: border-color .15s ease, box-shadow .15s ease;
  }
  .card:hover { border-color: var(--cyan); box-shadow: 0 1px 10px rgba(7,49,66,.06); }
  .card h3 { font-size: 17px; letter-spacing: -0.008em; }
  .card p { color: var(--text); font-size: 14.5px; line-height: 1.5; }
  .card .rule { width: 26px; height: 3px; background: var(--cyan); border-radius: 2px; margin-top: auto; }
  @media (max-width: 980px) { .stack { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (max-width: 620px) { .stack { grid-template-columns: 1fr; } }

  #services { background: var(--off); }

  /* Services (retired bullet boxes kept out) */
  .services { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
  .service { padding: 32px 32px 36px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); display: flex; flex-direction: column; gap: 14px; }
  .service h3 { display: flex; align-items: center; gap: 12px; }
  .service h3 svg { width: 22px; height: 22px; flex: none; color: var(--cyan); }
  .service p { color: var(--text); }
  .service ul { margin: 6px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--text); }
  .service li { padding-left: 18px; position: relative; }
  .service li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 2px; background: var(--cyan); }
  @media (max-width: 760px) { .services { grid-template-columns: 1fr; } .service { padding: 24px 20px 28px; } }

  /* Fit */
  .fit { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  .fit-item { padding: 24px 0 0; border-top: 2px solid var(--ink); display: flex; flex-direction: column; gap: 10px; }
  .fit-item p { color: var(--text); font-size: 15px; }
  @media (max-width: 760px) { .fit { grid-template-columns: 1fr; } }

  /* Journey placeholders */
  .journeys { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 40px; }
  .journey { background: var(--ink); color: var(--white); padding: 24px; display: flex; flex-direction: column; gap: 12px; border-radius: 3px; }
  .journey .jl { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--lime); }
  .journey .q { font-family: var(--display); font-weight: 600; font-size: 18px; line-height: 1.25; }
  .journey .meta { font-family: var(--mono); font-size: 11.5px; color: var(--steel-on-ink); }
  .dots { display: flex; gap: 5px; }
  .dots i { width: 24px; height: 3px; background: rgba(255,255,255,.18); border-radius: 2px; }
  .dots i:first-child { background: var(--cyan); }
  .journey .fake {
    display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
    height: 42px; padding: 0 18px; border-radius: 3px; background: rgba(0,175,200,.16);
    color: #6FD3E2; box-shadow: inset 0 0 0 1px rgba(0,175,200,.45);
    font-size: 14px; font-weight: 600; cursor: not-allowed;
  }
  .journey .fake svg { width: 16px; height: 16px; }
  .journey .note { font-family: var(--mono); font-size: 10.5px; color: var(--steel-on-ink); }
  @media (max-width: 760px) { .journeys { grid-template-columns: 1fr; } }

  /* Approach */
  .steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
  .step { background: var(--mist); border-radius: 4px; padding: 26px 24px 30px; display: flex; flex-direction: column; gap: 10px; }
  .step .n { font-family: var(--mono); font-size: 11.5px; font-weight: 500; color: var(--cyan-deep); letter-spacing: 0.08em; text-transform: uppercase; }
  .step p { color: var(--text); font-size: 14.5px; }
  @media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

  /* About */
  .about .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
  .about-card { border: 1px solid var(--rule); border-radius: 4px; padding: 24px; display: flex; flex-direction: column; gap: 14px; }
  .about-card .avatar { width: 84px; height: 46px; display: flex; align-items: center; color: var(--ink); }
  .about-card .avatar svg { width: 100%; height: auto; }
  .about-card .who { display: flex; flex-direction: column; gap: 2px; }
  .about-card .who strong { font-family: var(--display); font-size: 20px; font-weight: 600; letter-spacing: -0.012em; }
  .about-card .who span { font-size: 14px; color: var(--steel); }
  .about-copy { display: flex; flex-direction: column; gap: 18px; }
  .about-copy p { color: var(--text); max-width: 36em; }
  @media (max-width: 760px) { .about .wrap { grid-template-columns: 1fr; } }

  /* CTA band */
  .band { background: var(--night); color: var(--white); border-top: 0; }
  .band .wrap { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); gap: clamp(24px, 4vw, 64px); align-items: center; }
  .band h2 { font-size: clamp(38px, 5.6vw, 68px); letter-spacing: -0.03em; line-height: 1; font-weight: 700; }
  .band p { color: #B9CBD3; max-width: 30em; }
  .band-right { display: flex; flex-direction: column; gap: 20px; align-items: flex-start; }
  @media (max-width: 760px) { .band .wrap { grid-template-columns: 1fr; } }

  /* Contact */
  .contact .wrap { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
  .contact-copy { display: flex; flex-direction: column; gap: 18px; }
  .contact-copy p { color: var(--text); max-width: 30em; }
  .contact-copy .direct { display: flex; flex-direction: column; gap: 6px; font-size: 15px; }
  .contact-copy .direct span { color: var(--steel); font-size: 13px; }
  form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .field { display: flex; flex-direction: column; gap: 6px; }
  .field.full { grid-column: 1 / -1; }
  .field label { font-size: 13px; font-weight: 600; color: var(--ink); }
  .field input, .field textarea { font-family: var(--body); font-size: 15px; color: var(--ink); background: var(--white); border: 1px solid #CBD6DA; border-radius: 3px; padding: 12px 14px; width: 100%; }
  .field input:focus, .field textarea:focus { border-color: var(--cyan); outline: none; box-shadow: 0 0 0 3px var(--tint); }
  .field textarea { min-height: 132px; resize: vertical; }
  .form-foot { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
  .form-foot small { color: var(--steel); font-size: 13px; }
  .form-note { grid-column: 1 / -1; font-size: 14px; color: var(--text); background: var(--tint); border-radius: 3px; padding: 12px 14px; display: none; }
  .form-note.show { display: block; }
  @media (max-width: 760px) { .contact .wrap { grid-template-columns: 1fr; } form { grid-template-columns: 1fr; } }

  footer { border-top: 1px solid var(--rule); padding: 40px 0 48px; }
  footer .wrap { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; flex-wrap: wrap; }
  footer .brand { display: flex; flex-direction: column; gap: 10px; color: var(--ink); }
  footer .brand svg.mark { width: 60px; height: auto; }
  footer .brand p { font-size: 13px; color: var(--steel); }
  footer nav { display: flex; gap: 20px; font-size: 14px; }
  footer nav a { color: var(--text); }
  footer .legal { width: 100%; padding-top: 20px; border-top: 1px solid var(--rule); font-size: 13px; color: var(--steel); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
  footer .legal .tag { font-family: var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--cyan-deep); }

  /* Link under the card grid, pointing at the detail */
  .stack-more { margin-top: 28px; }

  /* Deep page header */
  .page-head { padding: clamp(48px, 6vw, 84px) 0 clamp(32px, 4vw, 52px); }
  .page-head .wrap { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.15fr); gap: clamp(24px,4vw,64px); align-items: end; }
  .page-head h1 { font-size: clamp(34px, 4.6vw, 56px); max-width: 14ch; margin: 16px 0 0; }
  .page-head .lede { margin-bottom: 4px; }
  .crumb { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--steel); }
  .crumb a { color: var(--steel); }
  .crumb a:hover { color: var(--cyan-deep); }
  @media (max-width: 800px) { .page-head .wrap { grid-template-columns: 1fr; align-items: start; } }

  /* Six capability groups, each with what it is and what is in it */
  .groups { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
  .grp { padding: 30px 32px 34px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); display: flex; flex-direction: column; gap: 14px; }
  .grp h2 { display: flex; align-items: center; gap: 12px; font-size: 21px; letter-spacing: -0.015em; }
  .grp h2 svg { width: 22px; height: 22px; flex: none; color: var(--cyan); }
  .grp > p { color: var(--text); font-size: 15.5px; }
  .grp ul { margin: 4px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 7px; font-size: 14.5px; color: var(--text); }
  .grp li { padding-left: 18px; position: relative; }
  .grp li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 2px; background: var(--cyan); }
  @media (max-width: 800px) { .groups { grid-template-columns: 1fr; } .grp { padding: 26px 22px 30px; } }

  /* The deep page header already sets the top spacing, so the first section under it does not repeat it */
  .page-head + section { padding-top: clamp(8px, 1.5vw, 20px); border-top: 0; }