:root {
  --ink: #12172b;
  --ink-raised: #181e37;
  --wire: #2b3358;
  --bone: #ece9e2;
  --muted: #8f97b6;
  --signal: #e4703a;
  --focus: #37b7c3;

  --display: "Archivo", "Helvetica Neue", sans-serif;
  --body: "Newsreader", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --gutter: clamp(1.5rem, 5vw, 4rem);
  --spine: 0rem;
  --measure: 34rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    linear-gradient(var(--wire) 1px, transparent 1px),
    linear-gradient(90deg, var(--wire) 1px, transparent 1px);
  background-size: 6rem 6rem;
  background-position: -1px -1px;
  color: var(--bone);
  font-family: var(--body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  line-height: 1.6;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(120% 80% at 50% 0%, rgba(18, 23, 43, 0.55) 0%, var(--ink) 78%);
  pointer-events: none;
  z-index: 0;
}

body > * { position: relative; z-index: 1; }

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 700;
  font-stretch: 112%;
  letter-spacing: -0.02em;
  line-height: 1.02;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; }

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--signal);
  color: var(--ink);
  padding: 0.6rem 1rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  z-index: 50;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- spine ---------- */

.spine { display: none; }

@media (min-width: 68rem) {
  :root { --spine: 9rem; }

  .spine {
    display: block;
    position: fixed;
    left: 3.25rem;
    top: 0;
    height: 100vh;
    z-index: 20;
    padding-block: 6rem;
  }
  .spine-rail {
    position: absolute;
    left: 0.34rem;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--wire);
  }
  .spine-fill {
    position: absolute;
    inset: 0 0 auto 0;
    height: 0;
    background: var(--signal);
    transition: height 0.12s linear;
  }
  .spine ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.35rem;
    height: 100%;
  }
  .spine a {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: transparent;
    transition: color 0.25s ease;
  }
  .spine a i {
    flex: none;
    width: 0.75rem;
    height: 0.75rem;
    border: 1px solid var(--wire);
    border-radius: 50%;
    background: var(--ink);
    transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
  }
  .spine a:hover, .spine a:focus-visible, .spine a.is-active { color: var(--muted); }
  .spine a:hover i, .spine a:focus-visible i { border-color: var(--signal); }
  .spine a.is-active i {
    background: var(--signal);
    border-color: var(--signal);
    transform: scale(1.2);
  }
  .spine a.is-active { color: var(--bone); }
}

/* ---------- topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.4rem var(--gutter) 1.4rem calc(var(--gutter) + var(--spine));
  border-bottom: 1px solid var(--wire);
  background: rgba(18, 23, 43, 0.82);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 30;
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  margin-right: auto;
}
.mark-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--signal);
}

.topnav { display: none; gap: 1.5rem; }
.topnav a {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding-block: 0.25rem;
  border-bottom: 1px solid transparent;
}
.topnav a:hover { color: var(--bone); border-bottom-color: var(--signal); }

@media (min-width: 46rem) { .topnav { display: flex; } }

.lang { display: flex; border: 1px solid var(--wire); }
.lang button {
  appearance: none;
  background: none;
  border: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
}
.lang button[aria-pressed="true"] { background: var(--signal); color: var(--ink); }

/* ---------- sections ---------- */

.hero, .section {
  padding: clamp(4.5rem, 9vw, 8rem) var(--gutter) 0 calc(var(--gutter) + var(--spine));
  max-width: calc(74rem + var(--spine));
}

.section + .section { padding-top: clamp(4.5rem, 9vw, 8rem); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 1.1rem;
}

.section > h2 {
  font-size: clamp(1.85rem, 1.2rem + 2.2vw, 3rem);
  max-width: 22ch;
  margin-bottom: 2.75rem;
}

/* ---------- hero ---------- */

.hero { padding-bottom: 1rem; }

.hero h1 {
  font-size: clamp(2.3rem, 1.1rem + 5.6vw, 5.4rem);
  font-weight: 800;
  max-width: 17ch;
  margin-bottom: 2.5rem;
}

.hero-body {
  display: grid;
  gap: 2.5rem;
  border-top: 1px solid var(--wire);
  padding-top: 2rem;
}

@media (min-width: 56rem) {
  .hero-body { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 4rem; }
}

.lead {
  font-size: clamp(1.05rem, 1rem + 0.35vw, 1.3rem);
  line-height: 1.55;
  color: #d5d2ca;
  max-width: var(--measure);
}

.spec {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.5;
  align-self: start;
}
.spec > div {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px dotted var(--wire);
}
.spec dt { color: var(--muted); letter-spacing: 0.08em; }
.spec dd { margin: 0; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.5rem;
}

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 1.4rem;
  border: 1px solid var(--wire);
  color: var(--bone);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn:hover { border-color: var(--signal); }
.btn-primary {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink);
  font-weight: 500;
}
.btn-primary:hover { background: #f0824d; border-color: #f0824d; }

/* ---------- services ---------- */

.cards {
  display: grid;
  gap: 1px;
  background: var(--wire);
  border: 1px solid var(--wire);
}

@media (min-width: 44rem) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 72rem) { .cards { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--ink-raised);
  padding: 1.9rem 1.6rem 2.1rem;
  transition: background 0.25s ease;
}
.card:hover { background: #1c2340; }

.card .tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.6rem;
  padding-left: 1.15rem;
  position: relative;
}
.card .tag::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--wire);
  transition: background 0.25s ease;
}
.card:hover .tag::before { background: var(--signal); }

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}
.card p:last-child { color: #c4c2bd; font-size: 0.98rem; line-height: 1.55; }

/* ---------- work ---------- */

.work {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--wire);
}

.entry {
  display: grid;
  gap: 1.25rem;
  padding: 2.4rem 0;
  border-bottom: 1px solid var(--wire);
}

@media (min-width: 56rem) {
  .entry { grid-template-columns: minmax(0, 16rem) minmax(0, 1fr); gap: 3rem; }
}

.entry-head h3 { font-size: 1.5rem; }
.ticker {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-stretch: normal;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-top: 0.5rem;
}
.entry-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 0.6rem;
}

.entry-body p:first-child { max-width: var(--measure); color: #d5d2ca; }

.metric {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
  margin-top: 1.25rem;
}

/* ---------- method ---------- */

.method { display: grid; gap: 2.5rem; }

@media (min-width: 52rem) {
  .method { grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
}

.method h3 {
  font-size: 1.15rem;
  padding-top: 1rem;
  border-top: 2px solid var(--signal);
  margin-bottom: 0.7rem;
}
.method p { color: #c4c2bd; font-size: 0.98rem; }

/* ---------- stack ---------- */

.stack { margin: 0; border-top: 1px solid var(--wire); }
.stack > div {
  display: grid;
  gap: 0.35rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--wire);
}

@media (min-width: 44rem) {
  .stack > div { grid-template-columns: 10rem 1fr; gap: 2rem; align-items: baseline; }
}

.stack dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--signal);
}
.stack dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: #d5d2ca;
}

/* ---------- contact ---------- */

.contact { padding-bottom: 2rem; }
.contact .lead { margin-bottom: 2.5rem; }

.email {
  display: inline-block;
  font-family: var(--display);
  font-stretch: 112%;
  font-weight: 700;
  font-size: clamp(1.5rem, 0.7rem + 3.4vw, 3.2rem);
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--bone);
  border-bottom: 2px solid var(--signal);
  padding-bottom: 0.1em;
  word-break: break-word;
}
.email:hover { color: var(--signal); }

.links {
  list-style: none;
  margin: 2.75rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  font-family: var(--mono);
  font-size: 0.8rem;
}
.links a { color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--wire); padding-bottom: 0.15rem; }
.links a:hover { color: var(--bone); border-bottom-color: var(--signal); }

/* ---------- footer ---------- */

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  margin-top: clamp(4rem, 8vw, 7rem);
  padding: 1.6rem var(--gutter) 1.6rem calc(var(--gutter) + var(--spine));
  border-top: 1px solid var(--wire);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- motion ---------- */

.reveal {
  opacity: 0;
  transform: translateY(0.9rem);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-in { opacity: 1; transform: none; }

.hero .reveal { transition-delay: calc(var(--i, 0) * 90ms); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}