/* ============================================================
   QCore Technologies — "From Silicon to Orbit"
   Shared design system. No external requests. System fonts only.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --bg-0: #060A12;
  --bg-1: #0B1220;
  --bg-2: #101A2E;
  --ink: #E6EDF7;
  --ink-dim: #8FA0B8;
  --qcyan: #21D4C7;
  --qamber: #F2A33C;
  --hairline: rgba(230, 237, 247, 0.08);
  --hairline-strong: rgba(230, 237, 247, 0.16);
  --accent: var(--qcyan);
  --accent-soft: rgba(33, 212, 199, 0.12);
  --font-sans: ui-sans-serif, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;
  --radius: 8px;
  --container: 1160px;
  --header-h: 64px;
}

/* Silicon pages swap the working accent to amber (hardware context only) */
.page-silicon {
  --accent: var(--qamber);
  --accent-soft: rgba(242, 163, 60, 0.12);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg-0);
  background-image:
    radial-gradient(1100px 620px at 78% -8%, rgba(33, 212, 199, 0.06), transparent 60%),
    radial-gradient(900px 640px at 8% 108%, rgba(242, 163, 60, 0.04), transparent 60%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48'%3E%3Cpath d='M48 .5H.5V48' fill='none' stroke='%23E6EDF7' stroke-opacity='.035'/%3E%3C/svg%3E");
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  min-height: 100vh;
}

img, svg { max-width: 100%; height: auto; }

h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.1rem, 5.4vw, 3.6rem); }
h2 { font-size: clamp(1.55rem, 3.4vw, 2.35rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); font-weight: 700; }
h4 { font-size: 1.05rem; font-weight: 700; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--qcyan);
  text-decoration: none;
}
a:hover { text-decoration: underline; text-underline-offset: 3px; }

::selection { background: rgba(33, 212, 199, 0.28); color: var(--ink); }

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

ul, ol { padding-left: 1.2em; margin: 0 0 1em; }
li { margin-bottom: 0.35em; }

code, .mono {
  font-family: var(--font-mono);
  font-size: 0.86em;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 16px; top: -48px;
  z-index: 200;
  background: var(--qcyan);
  color: #04211E;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 10px 16px;
  border-radius: 0 0 6px 6px;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 0; text-decoration: none; }

/* ---------- Layout utilities ---------- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}

.section { padding-block: clamp(56px, 9vw, 104px); }
.section-tight { padding-block: clamp(36px, 6vw, 64px); }

.lede {
  color: var(--ink-dim);
  font-size: clamp(1.02rem, 1.7vw, 1.2rem);
  max-width: 62ch;
}

.prose { max-width: 68ch; }
.prose p { color: var(--ink-dim); }
.prose strong { color: var(--ink); }

/* Mono eyebrow: `01 / TRUST IN SILICON` */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 14px;
}

/* Bracketed mono chip: [ FIPS 140-3 L3 TARGET ] */
.chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: 4px 10px;
  display: inline-block;
  white-space: nowrap;
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}
.chip-row li { margin: 0; }

/* Section divider = trace + via dot + mono label */
.rule {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 clamp(28px, 5vw, 48px);
}
.rule-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--accent);
  flex: none;
}
.rule-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  flex: none;
}
.rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--hairline-strong), var(--hairline) 65%, transparent);
}

/* ---------- Buttons / CTAs ---------- */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 13px 22px;
  border-radius: 6px;
  border: 1px solid var(--qcyan);
  color: var(--qcyan);
  background: transparent;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.btn:hover {
  background: var(--qcyan);
  color: #04211E;
  text-decoration: none;
}
.btn-solid {
  background: var(--qcyan);
  color: #04211E;
}
.btn-solid:hover { background: #4FE3D8; color: #04211E; }
.btn-ghost {
  border-color: var(--hairline-strong);
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--bg-2);
  color: var(--ink);
  border-color: var(--hairline-strong);
}

.link-mono {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--accent);
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 10, 18, 0.82);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.15rem;
}
.brand:hover { text-decoration: none; }
.brand-mark { flex: none; display: block; }

/* Logo hover: a pulse travels the Q's tail pin (path length ~30.4) */
.brand-pulse {
  stroke-dasharray: 7 34;
  stroke-dashoffset: 41;
  opacity: 0;
}
.brand:hover .brand-pulse,
.brand:focus-visible .brand-pulse {
  opacity: 1;
  animation: brand-trace 1.1s linear infinite;
}
@keyframes brand-trace {
  from { stroke-dashoffset: 41; }
  to   { stroke-dashoffset: 0; }
}
.brand-word small {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.1em;
  display: block;
  margin-top: -2px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--hairline-strong);
  border-radius: 6px;
  padding: 9px 10px;
  cursor: pointer;
}
.nav-toggle-box {
  display: block;
  width: 20px;
}
.nav-toggle-box span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  margin: 4px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list li { margin: 0; }
.nav-list a {
  display: block;
  color: var(--ink-dim);
  font-size: 14.5px;
  padding: 8px 11px;
  border-radius: 6px;
  transition: color 0.15s ease, background 0.15s ease;
}
.nav-list a:hover {
  color: var(--ink);
  background: var(--bg-2);
  text-decoration: none;
}
.nav-list a[aria-current="page"] {
  color: var(--qcyan);
  position: relative;
}
.nav-list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 11px; right: 11px; bottom: 2px;
  height: 1px;
  background: var(--qcyan);
}
.nav-contact {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--qcyan);
  border: 1px solid rgba(33, 212, 199, 0.45);
  border-radius: 6px;
  padding: 8px 14px;
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease;
}
.nav-contact:hover {
  background: var(--qcyan);
  color: #04211E;
  text-decoration: none;
}

@media (max-width: 1079px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    background: rgba(6, 10, 18, 0.97);
    border-bottom: 1px solid var(--hairline);
    padding: 14px 20px 22px;
  }
  .site-nav.open { display: flex; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .nav-list a { padding: 12px 10px; font-size: 16px; }
  .nav-list a[aria-current="page"]::after { left: 10px; right: auto; width: 22px; bottom: 6px; }
  .nav-contact { text-align: center; padding: 12px 14px; }
}

/* ---------- Hero (home) ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
}
.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
  padding-block: clamp(56px, 8vw, 110px);
}
.hero-copy .lede { margin-top: 18px; }
.hero-art {
  display: flex;
  justify-content: center;
}
.hero-art svg {
  width: min(400px, 82vw);
  height: auto;
}

@media (min-width: 1080px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    min-height: calc(100vh - var(--header-h));
    gap: 24px;
  }
}

/* Signature pulse traveling the trust line */
@keyframes trace-pulse {
  from { stroke-dashoffset: 940; }
  to   { stroke-dashoffset: 0; }
}
.pulse {
  stroke-dasharray: 46 894;
  stroke-dashoffset: 940;
  animation: trace-pulse 6s linear infinite;
}
@keyframes via-blink {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}
.blink { animation: via-blink 3s ease-in-out infinite; }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  border-bottom: 1px solid var(--hairline);
  padding-block: clamp(48px, 7vw, 88px);
}
.page-hero .lede { margin-top: 16px; }

/* ---------- Domain tiles ---------- */
.tiles {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .tiles { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .tiles { grid-template-columns: repeat(4, 1fr); } }

.tile {
  position: relative;
  display: block;
  background: var(--bg-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 26px 22px 24px;
  color: var(--ink);
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.tile:hover {
  text-decoration: none;
  border-color: rgba(33, 212, 199, 0.4);
  background: var(--bg-2);
  transform: translateY(-3px);
}
/* corner trace lights up on hover */
.tile::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 44px; height: 44px;
  border-top: 1.5px solid transparent;
  border-right: 1.5px solid transparent;
  border-top-right-radius: var(--radius);
  transition: border-color 0.2s ease;
}
.tile:hover::before { border-color: var(--accent); }
.tile-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}
.tile h3 { margin-bottom: 8px; font-size: 1.16rem; }
.tile p {
  color: var(--ink-dim);
  font-size: 0.94rem;
  margin: 0;
}
.tile .tile-go {
  display: block;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .cards.cols-3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1080px) { .cards.cols-4 { grid-template-columns: repeat(4, 1fr); } }

.card {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 22px 20px;
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.card:hover {
  border-color: rgba(230, 237, 247, 0.2);
  background: var(--bg-2);
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 36px; height: 36px;
  border-top: 1.5px solid transparent;
  border-left: 1.5px solid transparent;
  border-top-left-radius: var(--radius);
  transition: border-color 0.2s ease;
}
.card:hover::before { border-color: var(--accent); }
.card h3, .card h4 { margin-bottom: 8px; }
.card p, .card li {
  color: var(--ink-dim);
  font-size: 0.93rem;
}
.card ul { margin-bottom: 0; }
.card .mono-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}

/* ---------- Product blocks ---------- */
.product { padding-block: clamp(48px, 7vw, 88px); }
.product + .product { border-top: 1px solid var(--hairline); }
.product-head { max-width: 76ch; margin-bottom: clamp(24px, 4vw, 40px); }
.product-head h2 span.prod-tag {
  font-family: var(--font-mono);
  font-size: 0.5em;
  letter-spacing: 0.1em;
  font-weight: 400;
  color: var(--ink-dim);
  display: block;
  margin-top: 8px;
}

/* ---------- Diagrams ---------- */
.diagram {
  margin: clamp(28px, 5vw, 44px) 0;
  background: var(--bg-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: clamp(16px, 3vw, 30px);
}
.diagram-scroll { overflow-x: auto; }
.diagram-scroll svg {
  display: block;
  width: 100%;
  min-width: 660px;
  height: auto;
}
.diagram figcaption {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}

/* Shared SVG text styles (inline SVGs inherit page fonts) */
.d-label { font-family: var(--font-mono); font-size: 12.5px; fill: var(--ink); letter-spacing: 0.04em; }
.d-label-dim { font-family: var(--font-mono); font-size: 11px; fill: var(--ink-dim); letter-spacing: 0.04em; }
.d-label-accent { font-family: var(--font-mono); font-size: 11px; fill: var(--qcyan); letter-spacing: 0.06em; }
.d-label-amber { font-family: var(--font-mono); font-size: 11px; fill: var(--qamber); letter-spacing: 0.06em; }
.d-box { fill: var(--bg-2); stroke: var(--hairline-strong); rx: 6; }
.d-box-accent { fill: rgba(33, 212, 199, 0.08); stroke: rgba(33, 212, 199, 0.5); }
.d-box-amber { fill: rgba(242, 163, 60, 0.08); stroke: rgba(242, 163, 60, 0.5); }
.d-line { stroke: var(--ink-dim); stroke-width: 1.2; fill: none; }
.d-line-accent { stroke: var(--qcyan); stroke-width: 1.5; fill: none; }
.d-line-amber { stroke: var(--qamber); stroke-width: 1.5; fill: none; }
.d-via { fill: var(--bg-0); stroke: var(--qcyan); stroke-width: 1.5; }
.d-via-amber { fill: var(--bg-0); stroke: var(--qamber); stroke-width: 1.5; }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .stats { grid-template-columns: repeat(3, 1fr); } }

.stat {
  background: var(--bg-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.stat-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--accent);
  display: block;
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.stat p {
  color: var(--ink-dim);
  font-size: 0.94rem;
  margin: 0;
}

/* ---------- Narrative spine ---------- */
.spine {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
}
@media (min-width: 1080px) { .spine { grid-template-columns: repeat(3, 1fr); gap: 40px; } }

.spine-item {
  border-left: 2px solid var(--accent);
  padding-left: 22px;
}
.spine-item h3 { font-size: 1.28rem; margin-bottom: 10px; }
.spine-item p { color: var(--ink-dim); font-size: 0.96rem; margin: 0; }
.spine-item .eyebrow { margin-bottom: 10px; }

/* ---------- Standards strip ---------- */
.standards-strip {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding-block: 22px;
}
.standards-strip p {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-align: center;
  margin: 0;
  line-height: 2;
}
.standards-strip span { color: var(--ink); }

/* ---------- Feature split ---------- */
.split {
  display: grid;
  gap: 36px;
  align-items: center;
}
@media (min-width: 1080px) {
  .split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; }
  .split.split-rev > :first-child { order: 2; }
}

/* ---------- Accordion (FAQ / specs) ---------- */
.accordion {
  border-top: 1px solid var(--hairline);
  max-width: 78ch;
}
.acc {
  border-bottom: 1px solid var(--hairline);
}
.acc summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 4px;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  transition: color 0.15s ease;
}
.acc summary::-webkit-details-marker { display: none; }
.acc summary:hover { color: var(--accent); }
.acc summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--accent);
  flex: none;
  transition: transform 0.2s ease;
}
.acc[open] summary::after { content: "–"; }
.acc-body {
  padding: 0 4px 20px;
  color: var(--ink-dim);
  max-width: 68ch;
}
.acc-body p, .acc-body li { font-size: 0.95rem; }

/* ---------- Definition rows (specs) ---------- */
.spec-list {
  margin: 0;
  border-top: 1px solid var(--hairline);
}
.spec-list > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--hairline);
}
@media (min-width: 720px) {
  .spec-list > div { grid-template-columns: 230px 1fr; gap: 20px; }
}
.spec-list dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 3px;
}
.spec-list dd {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.95rem;
}

/* ---------- Timeline (technology roadmap) ---------- */
.timeline {
  position: relative;
  padding-left: 30px;
  max-width: 74ch;
  list-style: none;
  margin: 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 1.5px;
  background: linear-gradient(180deg, var(--qcyan), var(--hairline-strong));
}
.timeline li {
  position: relative;
  padding-bottom: 34px;
  margin: 0;
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -27px; top: 6px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--qcyan);
}
.timeline .t-when {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--qcyan);
  display: block;
  margin-bottom: 6px;
}
.timeline h3 { font-size: 1.08rem; margin-bottom: 6px; }
.timeline p { color: var(--ink-dim); font-size: 0.94rem; margin: 0; max-width: 62ch; }
.timeline .t-status {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
  border: 1px solid var(--hairline-strong);
  border-radius: 4px;
  padding: 2px 8px;
  margin-left: 10px;
  vertical-align: 2px;
  white-space: nowrap;
}
.timeline .t-status.done { color: var(--qcyan); border-color: rgba(33, 212, 199, 0.4); }

/* ---------- CTA band ---------- */
.cta-band {
  border-top: 1px solid var(--hairline);
  background:
    radial-gradient(680px 260px at 50% 120%, rgba(33, 212, 199, 0.1), transparent 70%),
    var(--bg-1);
}
.cta-band .inner {
  text-align: center;
  padding-block: clamp(56px, 8vw, 96px);
  max-width: 720px;
  margin-inline: auto;
}
.cta-band .cta-row { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  background: var(--bg-0);
  padding-top: clamp(40px, 6vw, 64px);
}
.footer-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: 1fr;
  padding-bottom: 40px;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
}
.footer-brand p {
  color: var(--ink-dim);
  font-size: 0.94rem;
  max-width: 34ch;
  margin-top: 14px;
}
.footer-tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--qcyan);
  margin-top: 18px;
}
.footer-col h2 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: var(--ink);
  font-size: 0.94rem;
}
.footer-col a:hover { color: var(--qcyan); }
.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-block: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.86rem;
}
.footer-bottom .mono {
  font-size: 11px;
  letter-spacing: 0.12em;
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: none;
}
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }

/* No JS: never hide content */
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- 404 ---------- */
.err-wrap {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
}
.err-code {
  font-family: var(--font-mono);
  font-size: clamp(3.4rem, 12vw, 7rem);
  font-weight: 700;
  color: var(--qcyan);
  line-height: 1;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 20px;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .pulse { animation: none; stroke-dasharray: none; opacity: 0; }
  .brand-pulse { animation: none !important; opacity: 0 !important; }
  .blink { animation: none; opacity: 1; }
  .reveal { opacity: 1; transform: none; }
}

/* Brand name keeps its mixed case even inside uppercase label contexts */
.brand-name {
  text-transform: none;
  letter-spacing: 0.04em;
}

/* Wordmark: the "o" of Core is the amber silicon die from the mark.
   Sized in em so it tracks the wordmark's font-size everywhere. */
.brand-lettering {
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
}
.brand-o {
  /* matches the font's lowercase-o: x-height 0.50em + a touch of round-letter
     overshoot, with side bearings so the advance width matches a real "o" */
  width: 0.515em;
  height: 0.515em;
  align-self: baseline;
  margin: 0 0.048em;
  position: relative;
  top: 0.012em;
  flex: none;
  overflow: visible;
}
@media (prefers-reduced-motion: no-preference) {
  .brand-o rect { transition: fill 0.25s ease; }
  .brand:hover .brand-o rect { fill: #FFBE63; }
}