/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg:          #0F1115;
  --bg-soft:     #161920;
  --bg-soft-2:   #1c202a;
  --line:        rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);
  --ink:         #ffffff;
  --ink-soft:    rgba(255,255,255,0.72);
  --ink-mute:    rgba(255,255,255,0.48);
  --accent:      #00f5d4;
  --accent-dim:  rgba(0,245,212,0.14);
  --accent-glow: rgba(0,245,212,0.35);

  --sans:   "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono:   "JetBrains Mono", ui-monospace, monospace;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  --container: 1240px;
  --radius: 18px;
  --radius-sm: 10px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
  scroll-behavior: smooth;
  overflow-x: clip;
}
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { font-family: var(--display); text-wrap: balance; line-height: 1.08; letter-spacing: -0.02em; font-weight: 600; }
ul, ol { list-style: none; padding: 0; }
::selection { background: var(--accent); color: var(--bg); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--accent); color: var(--bg);
  z-index: 9999; border-radius: 8px; font-weight: 600;
  transition: top .3s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   3. Utilities
   ============================================================= */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section-kicker::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}
.section-title {
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  max-width: 20ch;
  color: var(--ink);
}
.section-lead {
  margin-top: 1.1rem;
  max-width: 60ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

/* reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-split] { opacity: 1; transform: none; }

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .95rem 1.8rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), background .35s var(--ease-out), color .35s var(--ease-out);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #04211c;
  box-shadow: 0 0 0 rgba(0,245,212,0);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px var(--accent-glow), 0 0 60px rgba(0,245,212,0.18);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0,245,212,0.15);
}

/* =============================================================
   4. Hero logo animation — inline, non-blocking "print-on" signature
   ============================================================= */
.hero-logo {
  width: min(52vw, 200px);
}
.hero-logo-svg { width: 100%; height: auto; overflow: visible; }

/* .hero-logo-draw is the literal, unmodified path traced from
   WEB_ Icono_VERTEX_28N.svg (id="hero-logo-path"), at its original
   stroke-width (1.5, matching the source file's own 1.4 almost exactly)
   so the internal print-layer chevrons stay separated instead of fusing
   into solid blocks. pathLength="100" on the SVG element normalizes the
   path's real geometric length to 100 units, so dasharray/dashoffset are
   plain percentages rather than a hand-measured "magic number". The
   pointer below rides the exact same path via offset-path: url(#hero-logo-path),
   so the glowing tip and the newly-drawn line stay locked together. */
.hero-logo-draw {
  fill: none !important;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: heroLogoDraw 3.4s linear forwards;
  filter: drop-shadow(0 0 4px rgba(0, 245, 212, 0.5));
}
@keyframes heroLogoDraw { to { stroke-dashoffset: 0; } }

.hero-logo-head-icon {
  offset-path: url(#hero-logo-path);
  offset-rotate: 0deg;
  animation:
    heroLogoHeadMove 3.4s linear forwards,
    heroLogoHeadIconFade .3s var(--ease-out) 3.4s forwards;
}
@keyframes heroLogoHeadMove { from { offset-distance: 0%; } to { offset-distance: 100%; } }
@keyframes heroLogoHeadIconFade { to { opacity: 0; } }

.hero-logo-word {
  font-family: var(--display);
  font-weight: 700;
  font-size: 9.5px;
  letter-spacing: .01em;
}
.hero-logo .reveal-rect {
  width: 0;
  animation: heroLogoReveal .8s var(--ease-out) 3.55s forwards;
}
@keyframes heroLogoReveal { to { width: 53px; } }

.hero-logo-head-text {
  opacity: 0;
  animation: heroLogoHeadText .8s var(--ease-out) 3.55s forwards;
}
@keyframes heroLogoHeadText {
  0%   { transform: translate(4px,86px); opacity: 1; }
  90%  { transform: translate(57px,86px); opacity: 1; }
  100% { transform: translate(57px,86px); opacity: 0; }
}

/* Reduced-motion: show the finished mark immediately, skip the draw sequence */
@media (prefers-reduced-motion: reduce) {
  .hero-logo-draw { animation: none; stroke-dashoffset: 0; }
  .hero-logo-head-icon, .hero-logo-head-text { display: none; animation: none; }
  .hero-logo .reveal-rect { width: 53px; animation: none; }
}

/* =============================================================
   5. Header / Navigation
   ============================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding-block: 1.1rem;
  transition: background .4s var(--ease-out), padding .4s var(--ease-out), border-color .4s var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(15,17,21,0.86);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
  padding-block: .75rem;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
}
.brand-mark { display: block; filter: drop-shadow(0 0 8px rgba(0,245,212,0.35)); }
.brand-word {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .02em;
  color: var(--ink);
}
.brand-accent { color: var(--accent); }

.main-nav { display: none; align-items: center; gap: 2rem; }
.main-nav a {
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  transition: color .3s var(--ease-out);
}
.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .35s var(--ease-out);
}
.main-nav a:not(.nav-cta):hover { color: var(--ink); }
.main-nav a:not(.nav-cta):hover::after { transform: scaleX(1); transform-origin: left; }
.main-nav .nav-cta {
  padding: .6rem 1.3rem;
  border-radius: 999px;
  background: var(--accent-dim);
  border: 1px solid rgba(0,245,212,0.4);
  color: var(--accent);
  font-weight: 600;
  transition: background .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.main-nav .nav-cta:hover { box-shadow: 0 0 20px rgba(0,245,212,0.25); }

.nav-toggle {
  width: 40px; height: 40px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--ink);
  transition: transform .3s var(--ease-out), opacity .3s var(--ease-out);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s var(--ease-out);
  background: rgba(15,17,21,0.98);
  border-top: 1px solid var(--line);
}
.mobile-nav.is-open { max-height: 320px; }
.mobile-nav a {
  padding: 1rem 1.5rem;
  font-size: 1rem;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}
.mobile-nav .nav-cta { color: var(--accent); font-weight: 600; }

/* =============================================================
   6. Hero
   ============================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: clip;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-video {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-media-fallback {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(0,245,212,0.12), transparent 55%),
    radial-gradient(circle at 80% 80%, rgba(0,245,212,0.08), transparent 55%),
    linear-gradient(160deg, #0c0e12 0%, #12151b 100%);
}
/* Fallback shows by default (safe first paint); only hidden once the video
   is confirmed actually playing. Never assume the video first. */
.hero-media.is-video-ready .hero-media-fallback { display: none; }
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,245,212,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,245,212,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: gridDrift 22s linear infinite;
}
@keyframes gridDrift { to { background-position: 48px 48px; } }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,17,21,0.55) 0%, rgba(15,17,21,0.78) 55%, rgba(15,17,21,0.96) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 1.5rem;
  padding-block: clamp(5rem, 13vh, 7rem) 2.5rem;
}
.hero-visual {
  order: 1;
  display: flex;
  justify-content: center;
}
.hero-text { order: 2; min-width: 0; }
.kicker {
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.4rem;
  display: inline-flex; align-items: center; gap: .55rem;
}
.kicker::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }
.hero-title {
  font-size: clamp(2.6rem, 6vw, 5rem);
  max-width: 16ch;
  color: var(--ink);
}
.hero-sub {
  margin-top: 1.6rem;
  max-width: 52ch;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--ink-soft);
}
.hero-actions {
  margin-top: 2.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.hero-stats {
  margin-top: 3.6rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1.5rem;
  max-width: 640px;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.stat-value {
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: .1rem;
}
.stat-suffix { color: var(--accent); font-size: .7em; }
.stat-label {
  margin-top: .35rem;
  font-size: .82rem;
  color: var(--ink-mute);
  max-width: 18ch;
}
.scroll-cue {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  z-index: 1;
}
.scroll-cue span {
  position: absolute;
  top: 8px; left: 50%;
  width: 4px; height: 8px;
  margin-left: -2px;
  border-radius: 999px;
  background: var(--accent);
  animation: scrollCue 1.8s ease-in-out infinite;
}
@keyframes scrollCue {
  0% { transform: translateY(0); opacity: 1; }
  70% { opacity: 0; }
  100% { transform: translateY(16px); opacity: 0; }
}

/* =============================================================
   6b. Origin — Paralelo 28 Norte storytelling
   ============================================================= */
.origin { padding-block: clamp(4.5rem, 9vw, 7rem); background: var(--bg-soft); }
.origin-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
.origin-body { margin-top: 1.3rem; max-width: 62ch; color: var(--ink-soft); }
.origin-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-content: start;
}
.origin-stats li {
  padding: 1.4rem 1.2rem;
  border-radius: var(--radius);
  background: var(--bg-soft-2);
  border: 1px solid var(--line);
  text-align: center;
}
.origin-stat-value {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--accent);
}
.origin-stat-label {
  display: block;
  margin-top: .5rem;
  font-size: .8rem;
  color: var(--ink-mute);
}

/* =============================================================
   7. Solutions / Services
   ============================================================= */
.solutions { padding-block: clamp(5rem, 10vw, 8rem); }
.solutions-grid {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.solution-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .5s var(--ease-out), box-shadow .5s var(--ease-out), border-color .5s var(--ease-out);
  will-change: transform;
}
.solution-card:hover {
  border-color: rgba(0,245,212,0.35);
  box-shadow: 0 0 0 1px rgba(0,245,212,0.08), 0 24px 60px -20px rgba(0,245,212,0.25);
}
.solution-media {
  position: relative;
  aspect-ratio: 16/10;
  background: var(--bg-soft-2);
}
.solution-media video { width: 100%; height: 100%; object-fit: cover; }
.solution-media-fallback {
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(135deg, rgba(0,245,212,0.06) 0 2px, transparent 2px 14px),
    linear-gradient(160deg, #171b22, #10131810);
}
.solution-media-fallback img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.88);
}
.solution-media.is-video-ready .solution-media-fallback { display: none; }
.solution-body { padding: 1.8rem; }
.solution-icon {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-dim);
  color: var(--accent);
  margin-bottom: 1.1rem;
}
.solution-icon svg { width: 22px; height: 22px; }
.solution-body h3 { font-size: 1.3rem; margin-bottom: .7rem; color: var(--ink); }
.solution-body p { color: var(--ink-soft); font-size: .96rem; }
.tag-list { margin-top: 1.2rem; display: flex; flex-wrap: wrap; gap: .5rem; }
.tag-list li {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .03em;
  padding: .35rem .7rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--ink-mute);
}

/* =============================================================
   8. Showcase / Fabrication Lab
   ============================================================= */
.showcase { padding-block: clamp(5rem, 10vw, 8rem); background: var(--bg-soft); }
.showcase-grid {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.showcase-card {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-soft-2);
  box-shadow: 0 0 15px rgba(0,245,212,0.15);
  transition: box-shadow .5s var(--ease-out), transform .5s var(--ease-out);
}
.showcase-card:hover {
  box-shadow: 0 0 28px rgba(0,245,212,0.35);
  transform: translateY(-4px);
}
.showcase-card video { width: 100%; height: 100%; object-fit: cover; }
.showcase-fallback {
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(45deg, rgba(0,245,212,0.05) 0 2px, transparent 2px 16px),
    radial-gradient(circle at 30% 20%, rgba(0,245,212,0.1), transparent 60%),
    linear-gradient(160deg, #14171d, #1a1e26);
}
.showcase-fallback img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.85);
}
.showcase-card.is-video-ready .showcase-fallback { display: none; }
.showcase-label {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 1.1rem 1rem .9rem;
  font-size: .82rem;
  color: var(--ink);
  background: linear-gradient(180deg, transparent, rgba(10,12,16,0.92));
}
.tech-specs {
  margin-top: 3.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
  padding: 2rem;
  border-radius: var(--radius);
  background: var(--bg-soft-2);
  border: 1px solid var(--line);
}
.tech-specs-text h3 { font-size: 1.3rem; margin-bottom: .5rem; }
.tech-specs-text p { color: var(--ink-soft); max-width: 42ch; font-size: .94rem; }
.tech-specs-list { display: flex; gap: 2.2rem; flex-wrap: wrap; }
.tech-specs-list li { display: flex; flex-direction: column; }
.tech-specs-value { font-family: var(--display); font-size: 1.5rem; font-weight: 700; color: var(--accent); }
.tech-specs-label { font-size: .78rem; color: var(--ink-mute); margin-top: .2rem; }

/* =============================================================
   9. Capabilities
   ============================================================= */
.capabilities { padding-block: clamp(5rem, 10vw, 8rem); }
.capabilities-block { margin-top: 4rem; }
.capabilities-block:first-of-type { margin-top: 3rem; }
.capabilities-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: var(--ink);
}

.materials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.material-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem;
  overflow: hidden;
  transition: transform .5s var(--ease-out), border-color .5s var(--ease-out), box-shadow .5s var(--ease-out);
}
.material-card:hover {
  border-color: rgba(0,245,212,0.35);
  box-shadow: 0 0 15px rgba(0,245,212,0.18);
}
.material-media {
  margin: -1.8rem -1.8rem 1.4rem;
  aspect-ratio: 16/10;
  background: var(--bg-soft-2);
  overflow: hidden;
}
.material-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.85);
  transition: transform .6s var(--ease-out), filter .6s var(--ease-out);
}
.material-card:hover .material-media img {
  transform: scale(1.06);
  filter: saturate(1) brightness(0.95);
}
.material-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  border: 1px solid rgba(0,245,212,0.35);
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.material-icon svg { width: 24px; height: 24px; }
.material-card h4 { font-size: 1.15rem; margin-bottom: .3rem; }
.material-sub { font-family: var(--mono); font-size: .78rem; color: var(--accent); margin-bottom: .8rem; }
.material-card p:not(.material-sub) { color: var(--ink-soft); font-size: .92rem; }

.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.timeline-step {
  position: relative;
  padding: 1.8rem 1.8rem 1.8rem 1.8rem;
  border-left: 2px solid var(--line-strong);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--bg-soft);
}
.timeline-step::before {
  content: "";
  position: absolute; left: -6px; top: 1.9rem;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.timeline-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--accent);
  margin-bottom: 1rem;
}
.timeline-icon svg { width: 22px; height: 22px; }
.timeline-num {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--ink-mute);
  display: block;
  margin-bottom: .3rem;
}
.timeline-step h4 { font-size: 1.15rem; margin-bottom: .6rem; }
.timeline-step h4 span { display: block; font-family: var(--mono); font-size: .74rem; font-weight: 400; color: var(--accent); margin-top: .3rem; letter-spacing: .02em; }
.timeline-step p { color: var(--ink-soft); font-size: .92rem; }

.qa-block {
  position: relative;
  margin-top: 4rem;
  border-radius: var(--radius);
  border: 1px solid rgba(0,245,212,0.25);
  overflow: hidden;
  isolation: isolate;
}
.qa-bg {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: -2;
  filter: saturate(0.7) brightness(0.55);
}
.qa-block::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, rgba(15,17,21,0.92), rgba(0,245,212,0.1) 130%);
}
.qa-block-content { padding: 2.5rem; }
.qa-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(0,245,212,0.15);
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.qa-icon svg { width: 24px; height: 24px; }
.qa-block h3 { font-size: 1.6rem; margin-bottom: 1rem; }
.qa-block p { color: var(--ink-soft); max-width: 68ch; font-size: 1rem; }
.qa-points { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem 2rem; }
.qa-points li {
  position: relative;
  padding-left: 1.4rem;
  font-size: .9rem;
  color: var(--ink);
}
.qa-points li::before {
  content: "";
  position: absolute; left: 0; top: 8px;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  transform: rotate(45deg);
}

.tech-inquiry {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px dashed var(--line-strong);
  background: var(--bg-soft);
}
.tech-inquiry-formats { display: flex; gap: 1.2rem; align-items: flex-start; }
.tech-inquiry-icon {
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--accent);
}
.tech-inquiry-icon svg { width: 22px; height: 22px; }
.tech-inquiry h3 { font-size: 1.2rem; margin-bottom: .4rem; }
.tech-inquiry p { color: var(--ink-soft); font-size: .9rem; }
.format-chips { display: flex; flex-wrap: wrap; gap: .6rem; }
.format-chips span {
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .04em;
  padding: .5rem 1rem;
  border-radius: 8px;
  background: var(--bg-soft-2);
  border: 1px solid var(--line-strong);
  color: var(--ink);
}
.nda-note {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .84rem;
  color: var(--ink-mute);
}
.nda-note svg { color: var(--accent); flex-shrink: 0; }

/* =============================================================
   10. Contact / Form
   ============================================================= */
.contact { padding-block: clamp(5rem, 10vw, 8rem); background: var(--bg-soft); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
.contact-meta { margin-top: 2rem; display: flex; flex-direction: column; gap: 1rem; }
.contact-meta li { display: flex; flex-direction: column; gap: .2rem; }
.contact-meta strong { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); font-family: var(--mono); }
.contact-meta span { color: var(--ink-soft); }

.quote-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  padding: 2rem;
  border-radius: var(--radius);
  background: var(--bg-soft-2);
  border: 1px solid var(--line);
}
.form-row { display: flex; flex-direction: column; gap: .5rem; }
.form-row-full { grid-column: 1 / -1; }
.form-row label { font-size: .82rem; color: var(--ink-soft); }
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: .85rem 1rem;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font: inherit;
  transition: border-color .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,245,212,0.15);
}
.form-row textarea { resize: vertical; min-height: 110px; }
.form-submit { width: 100%; }
.form-status {
  margin-top: 1rem;
  font-size: .88rem;
  color: var(--accent);
  min-height: 1.2em;
}

/* =============================================================
   11. Footer
   ============================================================= */
.site-footer {
  padding-block: 3rem;
  border-top: 1px solid var(--line);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.footer-nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer-nav a { color: var(--ink-mute); font-size: .88rem; transition: color .3s var(--ease-out); }
.footer-nav a:hover { color: var(--accent); }
.footer-note { width: 100%; color: var(--ink-mute); font-size: .82rem; }

.footer-credits { width: 100%; }
.footer-credits summary {
  cursor: pointer;
  font-size: .74rem;
  color: var(--ink-mute);
  list-style: none;
  transition: color .3s var(--ease-out);
}
.footer-credits summary::-webkit-details-marker { display: none; }
.footer-credits summary::before { content: "＋ "; color: var(--accent); }
.footer-credits[open] summary::before { content: "－ "; }
.footer-credits summary:hover { color: var(--accent); }
.footer-credits ul { margin-top: .7rem; display: flex; flex-direction: column; gap: .35rem; }
.footer-credits li { font-size: .72rem; color: var(--ink-mute); }
.footer-credits a { color: var(--ink-mute); text-decoration: underline; text-underline-offset: 2px; }
.footer-credits a:hover { color: var(--accent); }

.footer-copyright { width: 100%; color: var(--ink-mute); font-size: .76rem; opacity: .7; }

/* =============================================================
   12. Tilt (JS-driven, subtle)
   ============================================================= */
[data-tilt] { transform-style: preserve-3d; }

/* =============================================================
   13. Responsive
   ============================================================= */
@media (min-width: 540px) {
  .solutions-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .materials-grid { grid-template-columns: repeat(2, 1fr); }
  .origin-stats { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 720px) {
  .hero-stats { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .quote-form { grid-template-columns: 1fr 1fr; }
  .tech-inquiry { grid-template-columns: 1.1fr 1fr; }
}

@media (min-width: 960px) {
  .main-nav { display: flex; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none; }
  .solutions-grid { grid-template-columns: repeat(3, 1fr); }
  .materials-grid { grid-template-columns: repeat(3, 1fr); }
  .timeline { grid-template-columns: repeat(4, 1fr); }
  .timeline-step { border-left: none; border-top: 2px solid var(--line-strong); border-radius: var(--radius); padding-top: 2.2rem; }
  .timeline-step::before { left: 1.8rem; top: -6px; }
  .contact-inner { grid-template-columns: .9fr 1.1fr; }
  .origin-inner { grid-template-columns: 1.1fr .9fr; align-items: center; }
  .origin-stats { grid-template-columns: 1fr; }

  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding-block: clamp(7rem, 16vh, 10rem) 4rem;
  }
  .hero-visual { order: 2; }
  .hero-text { order: 1; }
  .hero-logo { width: min(85%, 460px); }
}

@media (min-width: 1280px) {
  .showcase-grid { grid-template-columns: repeat(4, 1fr); }
}

/* =============================================================
   14. Reduced motion (only intrusive effects)
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .grid-lines { animation: none; }
  .scroll-cue span { animation: none; }
}