/* Engineering-document styling: paper, ink, one signal colour, thin rules. */
:root {
  --paper: #f3f2ee;
  --paper-2: #e9e8e3;
  --ink: #121314;
  --ink-2: #3c3f44;
  --mute: #6b6f75;
  --rule: #cdcbc3;
  --signal: #d9441c;
  --plate: #0d0e10;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --wrap: 1240px;
  --gutter: 32px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
h1, h2, h3, p, ol, dl, dd, figure { margin: 0; padding: 0; }
ol { list-style: none; }
::selection { background: var(--ink); color: var(--paper); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.num, .kicker, .case__fig, .case__method, figcaption, .tools, .bar__nav, .bar__status,
.titleblock dt, .methods, .foot, .contact__meta dt, .case__deliver span, .steps span {
  font-family: var(--mono);
}

/* top bar */
.bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 40px;
  height: 56px; padding: 0 var(--gutter);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.bar__name { font-weight: 600; font-size: 15px; letter-spacing: -0.01em; text-decoration: none; }
.bar__nav { display: flex; gap: 28px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.bar__nav a { text-decoration: none; color: var(--ink-2); }
.bar__nav a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.bar__status { margin-left: auto; font-size: 12px; color: var(--ink-2); display: flex; align-items: center; gap: 8px; }
.bar__status i { width: 7px; height: 7px; background: var(--signal); display: inline-block; }

/* hero */
.hero { padding-top: 96px; padding-bottom: 72px; }
.kicker { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--mute); }
.hero__title {
  margin-top: 28px;
  font-weight: 500;
  font-size: clamp(42px, 6.6vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.035em;
  max-width: 15ch;
}
.hero__grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
  margin-top: 56px; align-items: start;
}
.hero__lede { font-size: 20px; line-height: 1.55; color: var(--ink-2); max-width: 33em; }
.titleblock { border: 1px solid var(--ink); }
.titleblock div { display: grid; grid-template-columns: 112px 1fr; border-top: 1px solid var(--rule); }
.titleblock div:first-child { border-top: 0; }
.titleblock dt {
  padding: 12px 14px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--mute); border-right: 1px solid var(--rule);
}
.titleblock dd { padding: 11px 14px; font-size: 14px; }
.hero__actions { display: flex; align-items: center; gap: 32px; margin-top: 48px; }
.btn {
  display: inline-block; padding: 15px 26px;
  background: var(--ink); color: var(--paper);
  font-weight: 500; font-size: 15px; text-decoration: none;
  transition: background-color .15s;
}
.btn:hover { background: var(--signal); }
.link { font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--ink); padding-bottom: 2px; }
.link:hover { color: var(--signal); border-color: var(--signal); }

/* media plates */
.media {
  position: relative; width: 100%;
  aspect-ratio: var(--ratio, 16 / 9);
  background: var(--plate); overflow: hidden;
}
.media--light { background: var(--paper-2); }
.media--white { background: #fff; }
.media video, .media img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; display: block;
}
.media--white img { object-fit: contain; }
figcaption { margin-top: 12px; font-size: 12px; line-height: 1.55; color: var(--mute); }
figcaption b { color: var(--ink); font-weight: 500; margin-right: 6px; }

.plate--hero .media { max-height: 78vh; aspect-ratio: 2.5; }
.plate--hero figcaption { margin: 0 auto; padding-top: 14px; padding-bottom: 14px; }

.methods { border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.methods__row {
  display: flex; flex-wrap: wrap; gap: 10px 0;
  padding-top: 18px; padding-bottom: 18px;
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2);
}
.methods__row span:not(:last-child)::after { content: "/"; color: var(--rule); margin: 0 14px; }

/* sections */
.section { padding-top: 128px; }
.section__head {
  display: grid; grid-template-columns: 1fr 5fr 4fr; gap: 32px; align-items: baseline;
  border-top: 1px solid var(--ink); padding-top: 20px; margin-bottom: 24px;
}
.num { font-size: 13px; color: var(--signal); }
.section__head h2 { font-weight: 500; font-size: clamp(30px, 3.4vw, 46px); letter-spacing: -0.025em; line-height: 1.05; }
.section__note { color: var(--mute); font-size: 15px; max-width: 30em; }

/* work */
.case {
  display: grid; grid-template-columns: 4fr 8fr; gap: 56px;
  padding: 56px 0; border-bottom: 1px solid var(--rule);
}
.case:last-child { border-bottom: 0; }
.case__text { position: sticky; top: 88px; align-self: start; }
.case__fig { font-size: 12px; color: var(--signal); }
.case h3 { margin-top: 10px; font-weight: 500; font-size: 30px; letter-spacing: -0.02em; line-height: 1.1; }
.case__method { margin-top: 12px; font-size: 12px; color: var(--mute); }
.case__text > p:not(.case__fig):not(.case__method) { margin-top: 18px; color: var(--ink-2); }
.case__deliver { border-top: 1px solid var(--rule); padding-top: 14px; font-size: 15px; }
.case__deliver span {
  display: block; margin-bottom: 4px;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink);
}
.case__media { display: grid; gap: 40px; }
.case__media--grid { grid-template-columns: 1fr 1fr; gap: 40px 24px; }
.case__media .span2 { grid-column: span 2; }
.case__media .narrow { max-width: 560px; }

/* capabilities */
.caps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 40px; counter-reset: cap; }
.caps li { padding: 28px 0 36px; border-top: 1px solid var(--rule); counter-increment: cap; }
.caps li::before {
  content: counter(cap, decimal-leading-zero);
  font-family: var(--mono); font-size: 12px; color: var(--mute);
}
.caps h3 { margin-top: 14px; font-size: 21px; font-weight: 500; letter-spacing: -0.01em; }
.caps p { margin-top: 10px; color: var(--ink-2); }
.caps .tools { font-size: 12px; color: var(--mute); }

/* statement */
.statement { margin-top: 128px; background: var(--ink); color: var(--paper); }
.statement p {
  padding: 120px 0;
  font-size: clamp(28px, 3.6vw, 52px); line-height: 1.15; letter-spacing: -0.025em;
  max-width: 24ch;
}

/* process */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.steps li { border-top: 2px solid var(--ink); padding-top: 18px; }
.steps span { font-size: 12px; color: var(--signal); }
.steps h3 { margin-top: 18px; font-size: 22px; font-weight: 500; }
.steps p { margin-top: 10px; color: var(--ink-2); font-size: 15px; }

/* contact */
.contact { margin-top: 128px; padding: 96px 0 120px; border-top: 1px solid var(--ink); }
.contact__title {
  margin-top: 24px; font-weight: 500;
  font-size: clamp(40px, 6vw, 88px); line-height: 1.02; letter-spacing: -0.035em;
}
.contact__mail {
  display: inline-block; margin-top: 48px;
  font-family: var(--mono); font-size: clamp(18px, 2.2vw, 28px);
  text-decoration: none; border-bottom: 2px solid var(--signal); padding-bottom: 4px;
}
.contact__mail:hover { color: var(--signal); }
.contact__meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 72px; max-width: 900px; }
.contact__meta div { border-top: 1px solid var(--rule); padding-top: 14px; }
.contact__meta dt { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--mute); }
.contact__meta dd { margin-top: 6px; }

.foot {
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  padding-top: 20px; padding-bottom: 32px; border-top: 1px solid var(--rule);
  font-size: 12px; color: var(--mute);
}

/* layout breakpoints */
@media (max-width: 960px) {
  :root { --gutter: 24px; }
  .hero__grid, .case { grid-template-columns: 1fr; gap: 36px; }
  .case__text { position: static; }
  .section__head { grid-template-columns: 1fr; gap: 8px; }
  .caps { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .bar { gap: 16px; }
  .bar__nav { display: none; }
  .hero { padding-top: 56px; }
  .hero__lede { font-size: 18px; }
  .hero__actions { flex-wrap: wrap; gap: 20px; }
  .titleblock div { grid-template-columns: 104px 1fr; }
  .titleblock dt { padding: 12px 10px; }
  .case__media--grid { grid-template-columns: 1fr; }
  .case__media .span2 { grid-column: auto; }
  .caps, .steps, .contact__meta { grid-template-columns: 1fr; }
  .section { padding-top: 88px; }
  .statement { margin-top: 88px; }
  .statement p { padding: 80px 0; }
  .contact { margin-top: 88px; padding-top: 64px; }
  .methods__row span:not(:last-child)::after { margin: 0 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}