/* ═══════════════════════════════════════════════════════════
   ByteBlocks — "Assembly"
   Substrate grey, ink, signal orange, one ultramarine band.
   ═══════════════════════════════════════════════════════════ */

:root {
  --sub:    #EFF0F2;
  --paper:  #FFFFFF;
  --ink:    #0B0D12;
  --mute:   #5D6673;
  --rule:   #D8DBE0;
  --signal: #FF5A1F;
  --deep:   #141C4B;

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body:    "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --shell: 1240px;
  --gut:   clamp(20px, 5vw, 56px);
  --pad:   clamp(76px, 9vw, 132px);
  --cell:  clamp(46px, 5.4vw, 78px);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--sub);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--display);
  font-variation-settings: "wdth" 118, "wght" 800;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 0.98;
  margin: 0;
  text-transform: uppercase;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: inherit; }

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--sub);
  padding: 12px 18px; z-index: 100;
  font-family: var(--mono); font-size: 12px;
}
.skip:focus { left: 0; }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gut);
}

/* ── Shared type ─────────────────────────────────────────── */

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mute);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  background: var(--signal);
  flex: none;
}
.eyebrow--invert { color: rgba(255,255,255,.62); }

/* ── Masthead ────────────────────────────────────────────── */

.masthead {
  position: sticky; top: 0; z-index: 50;
  background: rgba(239, 240, 242, .88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease;
}
.masthead.is-stuck { border-bottom-color: var(--rule); }

.masthead__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 68px;
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  margin-right: auto;
}
.mark__glyph {
  width: 15px; height: 15px;
  background: var(--ink);
  position: relative;
  flex: none;
}
.mark__glyph::after {
  content: "";
  position: absolute;
  right: -6px; bottom: -6px;
  width: 8px; height: 8px;
  background: var(--signal);
}
.mark__word {
  font-family: var(--display);
  font-variation-settings: "wdth" 112, "wght" 800;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.mark--sm .mark__word { font-size: 15px; }

.nav {
  display: flex;
  gap: 26px;
  font-size: 14.5px;
  color: var(--mute);
}
.nav a {
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--signal); }

/* ── Buttons ─────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--ink);
  color: var(--sub);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 15px 26px;
  border: 1px solid var(--ink);
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.btn:hover { background: var(--signal); border-color: var(--signal); color: var(--ink); }

.btn--sm { padding: 10px 18px; font-size: 11.5px; }

.btn--ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn--ghost:hover { background: transparent; border-color: var(--ink); color: var(--ink); }

.btn--invert {
  background: var(--sub); color: var(--deep); border-color: var(--sub);
  font-size: 14px; text-transform: none; letter-spacing: 0;
  align-self: flex-start;
}
.btn--invert:hover { background: var(--signal); border-color: var(--signal); color: var(--ink); }

/* ── Hero ────────────────────────────────────────────────── */

.hero {
  position: relative;
  padding-top: clamp(64px, 9vw, 116px);
  padding-bottom: clamp(28px, 4vw, 48px);
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.hero__field {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(var(--cols, 16), 1fr);
  grid-auto-rows: var(--cell);
  pointer-events: none;
}
.hero__field i {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  pointer-events: auto;
  transition: background-color .45s ease;
}
.hero__field i.on-ink    { background: var(--ink); }
.hero__field i.on-signal { background: var(--signal); }
.hero__field i.on-deep   { background: var(--deep); }
.hero__field i:hover     { background: var(--signal); transition-duration: 0s; }

.hero__inner { position: relative; z-index: 2; }

.hero__title {
  font-size: clamp(34px, 9.4vw, 116px);
  margin: 22px 0 0;
}

.caret {
  display: inline-block;
  width: 0.42em; height: 0.42em;
  background: var(--signal);
  margin-left: 0.16em;
  vertical-align: baseline;
}

.hero__lede {
  max-width: 46ch;
  margin-top: 26px;
  color: var(--mute);
  font-size: clamp(16px, 1.5vw, 19px);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.capstrip {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin-top: clamp(56px, 8vw, 104px);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--mute);
}
.capstrip li { display: flex; align-items: center; gap: 9px; }
.capstrip li::before {
  content: "";
  width: 5px; height: 5px;
  background: var(--ink);
  flex: none;
}

/* ── Section frame ───────────────────────────────────────── */

section[id] { scroll-margin-top: 68px; }

.section { padding-block: var(--pad); }
.section--rule { border-top: 1px solid var(--rule); }

.head { max-width: 720px; }
.head--tight { max-width: 420px; }
.head__title {
  font-size: clamp(30px, 4.4vw, 58px);
  margin-top: 20px;
}
.head__lede {
  margin-top: 20px;
  color: var(--mute);
  max-width: 52ch;
}

/* ── What we build ───────────────────────────────────────── */

.blocks {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-top: clamp(44px, 6vw, 72px);
}

.block {
  grid-column: span 3;
  background: var(--sub);
  padding: clamp(26px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background .2s ease;
}
.block--lg { grid-column: span 4; }
.block--sm { grid-column: span 2; }
.block:hover { background: var(--paper); }

.block__title {
  font-size: clamp(19px, 2vw, 25px);
  font-variation-settings: "wdth" 112, "wght" 700;
  letter-spacing: -0.02em;
}
.block p { color: var(--mute); font-size: 15.5px; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mute);
}
.tags li { border: 1px solid var(--rule); padding: 4px 9px; }

/* ── Process ─────────────────────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(48px, 6vw, 76px);
}
.step {
  border-top: 2px solid var(--ink);
  padding-top: 18px;
}
.step:first-child { border-top-color: var(--signal); }
.step__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mute);
}
.step__title {
  font-size: clamp(20px, 2.1vw, 27px);
  font-variation-settings: "wdth" 112, "wght" 700;
  margin: 10px 0 12px;
}
.step p { color: var(--mute); font-size: 15.5px; }

/* ── Work ────────────────────────────────────────────────── */

.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-top: clamp(44px, 6vw, 72px);
}
.case {
  background: var(--sub);
  padding: clamp(26px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background .2s ease;
}
.case:hover { background: var(--paper); }

.case__metric {
  font-family: var(--display);
  font-variation-settings: "wdth" 118, "wght" 800;
  font-size: clamp(46px, 6vw, 76px);
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--signal);
}
.case__metric-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 20px;
}
.case__title {
  font-size: clamp(18px, 1.8vw, 22px);
  font-variation-settings: "wdth" 110, "wght" 700;
}
.case p:not([class]) { color: var(--mute); font-size: 15.5px; }
.case__meta {
  margin-top: auto;
  padding-top: 18px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--mute);
}

/* ── Stack ───────────────────────────────────────────────── */

.stack__layout {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(36px, 6vw, 88px);
  align-items: start;
}
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.stack li {
  font-family: var(--mono);
  font-size: 13px;
  padding: 11px 16px;
  border: 1px solid var(--rule);
  background: var(--paper);
  transition: border-color .18s ease, color .18s ease;
}
.stack li:hover { border-color: var(--ink); }

/* ── Contact ─────────────────────────────────────────────── */

.contact {
  background: var(--deep);
  color: #fff;
  padding-block: var(--pad);
}
.contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}
.contact__title {
  font-size: clamp(34px, 5vw, 66px);
  margin-top: 20px;
}
.contact__body {
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding-top: clamp(6px, 2vw, 30px);
}
.contact__body p { color: rgba(255,255,255,.74); max-width: 46ch; }
.contact__body .contact__note { font-size: 14px; color: rgba(255,255,255,.55); }

/* ── Footer ──────────────────────────────────────────────── */

.footer { border-top: 1px solid var(--rule); padding-block: 32px; }
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 32px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mute);
}
.footer__line--end { margin-left: auto; }

/* ── Reveal ──────────────────────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s cubic-bezier(.2,.7,.3,1), transform .6s cubic-bezier(.2,.7,.3,1);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 940px) {
  .nav { display: none; }
  .blocks { grid-template-columns: repeat(2, 1fr); }
  .block, .block--lg, .block--sm { grid-column: span 1; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .cases { grid-template-columns: 1fr; }
  .stack__layout { grid-template-columns: 1fr; }
  .contact__inner { grid-template-columns: 1fr; }
  .head--tight { max-width: 560px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .blocks { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 26px; }
  .btn { width: 100%; }
  .btn--sm, .btn--invert { width: auto; }
  .footer__line--end { margin-left: 0; }
}

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