:root {
  --navy: #063b70;
  --navy-deep: #042b54;
  --blue: #0878c9;
  --cyan: #09a6d6;
  --teal: #04bf9d;
  --ink: #142638;
  --muted: #5d6f80;
  --line: #d8e3eb;
  --mist: #f2f7fa;
  --white: #ffffff;
  --shadow: 0 22px 55px rgba(4, 43, 84, 0.12);
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-160%);
  padding: 0.7rem 1rem;
  border-radius: 8px;
  color: var(--white);
  background: var(--navy-deep);
}
.skip-link:focus { transform: translateY(0); }
.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;
}
.scroll-progress {
  position: fixed;
  z-index: 101;
  inset: 0 0 auto 0;
  height: 3px;
  background: transparent;
}
.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid rgba(216, 227, 235, 0.9);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1480px, calc(100% - 2.5rem));
  min-height: 72px;
  margin: 0 auto;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: linear-gradient(145deg, var(--blue), var(--navy));
  box-shadow: inset 0 -4px 0 var(--teal);
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}
.brand-copy { display: grid; line-height: 1.2; }
.brand-copy strong { color: var(--navy); font-size: 1rem; }
.brand-copy small { color: var(--muted); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; }
.header-download {
  padding: 0.55rem 0;
  color: var(--navy);
  border-bottom: 2px solid var(--teal);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}
.menu-toggle, .mobile-nav { display: none; }

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 76% 22%, rgba(9, 166, 214, 0.28), transparent 32%),
    linear-gradient(128deg, var(--navy-deep) 0%, var(--navy) 58%, #075e94 100%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.16;
  background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: linear-gradient(to right, black, transparent 75%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  gap: 5rem;
  align-items: center;
  width: min(1280px, calc(100% - 4rem));
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: 5rem 0 6.5rem;
}
.eyebrow, .section-number {
  margin: 0 0 1rem;
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4.2rem, 9vw, 8.5rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 0.86;
}
.hero h1 span { color: var(--teal); }
.hero-lead {
  max-width: 620px;
  margin: 2rem 0 0;
  color: #dceaf4;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  line-height: 1.45;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2.2rem; }
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy-deep); background: var(--teal); box-shadow: 0 12px 26px rgba(4, 191, 157, 0.24); }
.button-secondary { color: var(--white); border-color: rgba(255,255,255,.35); background: rgba(255,255,255,.07); }
.hero-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  max-width: 610px;
  margin-top: 3rem;
}
.hero-features div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.65rem;
  align-items: center;
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 14px;
  background: rgba(255,255,255,.06);
}
.hero-features b {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--blue);
  box-shadow: inset 0 -3px 0 var(--teal);
  font-size: 0.68rem;
}
.hero-features span { color: #e6f0f7; font-size: 0.75rem; line-height: 1.25; }
.hero-visual { position: relative; min-height: 590px; }
.hero-image-main {
  position: absolute;
  inset: 0 7% 0 18%;
  overflow: hidden;
  border-radius: 180px 24px 180px 24px;
  box-shadow: 0 35px 70px rgba(0,0,0,.28);
}
.hero-image-main::after {
  position: absolute;
  inset: 0;
  content: "";
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.28);
}
.hero-image-main img { width: 100%; height: 100%; object-fit: cover; }
.hero-image-small {
  position: absolute;
  right: 0;
  bottom: 7%;
  width: 36%;
  overflow: hidden;
  border: 7px solid var(--white);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.hero-image-small img { aspect-ratio: 1 / 1.1; object-fit: cover; }
.hero-badge {
  position: absolute;
  top: 11%;
  left: 0;
  display: grid;
  width: 138px;
  height: 138px;
  align-content: center;
  justify-items: center;
  border-radius: 50%;
  color: var(--navy-deep);
  background: var(--teal);
  box-shadow: 0 18px 40px rgba(4,43,84,.28);
  font-size: 0.8rem;
  line-height: 1.25;
  text-align: center;
}
.hero-badge strong { font-size: 1.05rem; }
.scroll-cue {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  display: flex;
  gap: 0.65rem;
  align-items: center;
  color: #c7dbe8;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transform: translateX(-50%);
}
.scroll-cue span { color: var(--teal); font-size: 1.1rem; }

.content-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 5rem;
  width: min(1480px, calc(100% - 4rem));
  margin: 0 auto;
}
.toc {
  align-self: stretch;
  padding-top: 5.5rem;
}
.toc-panel {
  position: sticky;
  top: 92px;
}
.toc-title {
  margin: 0;
  padding: 0 0 0.45rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.toc nav {
  display: grid;
  padding: 0.55rem 0 1.1rem 1rem;
  border-left: 1px solid var(--line);
}
.toc a {
  position: relative;
  display: grid;
  grid-template-columns: 1.75rem 1fr;
  align-items: center;
  padding: 0.55rem 0;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
  line-height: 1.25;
  text-decoration: none;
  transition: color .2s ease;
}
.toc a::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -1.07rem;
  width: 3px;
  border-radius: 3px;
  content: "";
  background: transparent;
}
.toc a span { color: #99a9b7; font-size: 0.66rem; }
.toc a:hover, .toc a.active { color: var(--navy); }
.toc a.active::before { background: var(--teal); }
.toc a.active span { color: var(--teal); }
.brochure-content { min-width: 0; }

.section, .contact-section { scroll-margin-top: 72px; }
.section { padding: 7rem clamp(1.5rem, 4vw, 4.5rem); }
.section-tint {
  margin-inline: calc(clamp(1.5rem, 4vw, 4.5rem) * -1);
  padding-inline: clamp(1.5rem, 8vw, 8rem);
  background: var(--mist);
}
.section-heading { max-width: 900px; margin-bottom: 3rem; }
.section-number { color: var(--blue); }
.section h2, .contact-section h2 {
  margin: 0;
  color: var(--navy);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.35rem, 5vw, 4.7rem);
  letter-spacing: -0.045em;
  line-height: 1.04;
}
.section-lead {
  margin: 1rem 0 0;
  color: var(--ink);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 650;
}
.section-heading > p:last-child:not(.section-lead) { max-width: 850px; color: var(--muted); }
h3 { color: var(--navy); line-height: 1.25; }
.split-layout, .conductivity-layout, .communication-layout, .builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
.photo-panel, .portrait-card, .wide-photo, .builder-image {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}
.photo-panel img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.photo-panel p, .portrait-card figcaption, .wide-photo figcaption {
  margin: 0;
  padding: 0.85rem 1rem;
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
}
.text-panel > h3:first-child { margin-top: 0; }
.text-panel p { color: var(--muted); }
.check-list {
  display: grid;
  gap: 0.65rem;
  margin: 1.3rem 0;
  padding: 0;
  list-style: none;
}
.check-list li { position: relative; padding-left: 1.75rem; }
.check-list li::before {
  position: absolute;
  top: 0.67rem;
  left: 0;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  content: "";
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(4,191,157,.12);
}
.highlight {
  margin-top: 1.7rem;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--teal);
  color: var(--navy) !important;
  background: var(--mist);
  font-weight: 700;
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}
.screen-card {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(4,43,84,.07);
  transition: transform .25s ease, box-shadow .25s ease;
}
.screen-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.screen-card img { width: 100%; aspect-ratio: 500/299; object-fit: cover; border-bottom: 1px solid var(--line); }
.screen-card figcaption { display: grid; gap: 0.15rem; padding: 1rem 1.15rem 1.1rem; }
.screen-card strong { color: var(--navy); }
.screen-card span { color: var(--muted); font-size: 0.8rem; }
.statement {
  display: grid;
  grid-template-columns: minmax(180px, .35fr) 1fr;
  gap: 2rem;
  align-items: center;
  margin-top: 2rem;
  padding: 1.5rem 1.7rem;
  border-radius: 16px;
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 12px 30px rgba(4,43,84,.06);
}
.statement span { color: var(--navy); font-family: Georgia, "Times New Roman", serif; font-size: 1.35rem; font-weight: 700; }
.statement p { margin: 0; color: var(--muted); }
.statement-dark { color: var(--white); background: var(--navy); }
.statement-dark span { color: var(--teal); }
.statement-dark p { color: #dceaf4; }

.conductivity-layout { align-items: stretch; }
.signal-card {
  position: relative;
  display: grid;
  min-height: 480px;
  place-content: center;
  justify-items: center;
  overflow: hidden;
  padding: 3rem;
  border-radius: var(--radius);
  color: var(--white);
  background: linear-gradient(150deg, var(--navy-deep), var(--blue));
  box-shadow: var(--shadow);
  text-align: center;
}
.signal-card::before {
  position: absolute;
  width: 340px;
  height: 340px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 50%;
  content: "";
}
.signal-icon {
  position: relative;
  display: grid;
  width: 110px;
  height: 110px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: inset 0 -7px 0 var(--teal), 0 14px 30px rgba(0,0,0,.18);
  font-size: 2.2rem;
  font-weight: 800;
}
.signal-card p { position: relative; margin: 1.3rem 0 0; font-size: 1rem; }
.signal-card strong { position: relative; color: var(--teal); font-size: 1.75rem; }
.signal-card > span { position: relative; color: #dceaf4; }
.signal-line { position: relative; width: 1px; height: 52px; margin: 1rem 0; background: linear-gradient(var(--teal), transparent); }
.signal-card small { position: relative; max-width: 260px; color: #dceaf4; font-size: 0.78rem; }
.quote-panel {
  display: grid;
  grid-template-columns: minmax(160px, .3fr) 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
  padding: 1.7rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,.72);
}
.quote-panel strong { color: var(--navy); font-family: Georgia, "Times New Roman", serif; font-size: 1.25rem; }
.quote-panel p { margin: 0; color: var(--muted); }

.protocol-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}
.protocol-grid div {
  display: grid;
  justify-items: center;
  padding: 1.4rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  text-align: center;
}
.protocol-grid b {
  display: grid;
  width: 68px;
  height: 68px;
  place-items: center;
  margin-bottom: 0.8rem;
  border-radius: 50%;
  color: var(--white);
  background: var(--blue);
  box-shadow: inset 0 -5px 0 var(--teal);
  font-size: 0.9rem;
}
.protocol-grid strong { color: var(--navy); font-size: 0.9rem; }
.protocol-grid span { color: var(--muted); font-size: 0.72rem; }
.communication-layout { grid-template-columns: minmax(0, 1.3fr) minmax(260px, .7fr); }
.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.portrait-card img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }

.engineering-visuals { display: grid; grid-template-columns: .78fr 1.22fr; gap: 1.2rem; }
.wide-photo img { width: 100%; height: 340px; object-fit: cover; }
.engineering-copy { max-width: 900px; margin: 2.5rem auto 0; text-align: center; }
.module-intro { max-width: 880px; margin: 3rem auto 1.5rem; color: var(--muted); text-align: center; }
.module-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.module-card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  text-align: center;
}
.module-card b {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  margin: 0 auto 0.85rem;
  border-radius: 50%;
  color: var(--white);
  background: var(--blue);
  box-shadow: inset 0 -4px 0 var(--teal);
  font-size: 0.8rem;
}
.module-card h3 { margin: 0; font-size: 1.05rem; }
.module-card p { margin: 0.4rem 0 0; color: var(--muted); font-size: 0.82rem; }

.builder-layout { align-items: stretch; }
.builder-image img { width: 100%; height: 100%; object-fit: cover; }
.large-copy { color: var(--navy) !important; font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.35rem, 2.4vw, 2rem); line-height: 1.35; }

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, .7fr);
  gap: 4rem;
  align-items: center;
  margin-left: calc(clamp(1.5rem, 4vw, 4.5rem) * -1);
  padding: 6rem clamp(1.5rem, 7vw, 7rem);
  color: var(--white);
  background: linear-gradient(125deg, var(--navy-deep), var(--navy));
}
.contact-section .section-number { color: var(--teal); }
.contact-section h2 { color: var(--white); }
.contact-copy > p:not(.section-number) { max-width: 720px; color: #dceaf4; font-size: 1.08rem; }
.button-light { margin-top: 1rem; color: var(--navy-deep); background: var(--white); }
.contact-card {
  display: grid;
  padding: 2rem;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 18px;
  background: rgba(255,255,255,.08);
  font-style: normal;
}
.contact-card strong { margin-bottom: 0.8rem; color: var(--teal); font-size: 1.2rem; }
.contact-card span { color: #dceaf4; }
.contact-card a { color: var(--white); font-weight: 650; text-decoration-color: var(--teal); text-underline-offset: 4px; }
.contact-card hr { width: 100%; margin: 1.1rem 0; border: 0; border-top: 1px solid rgba(255,255,255,.16); }

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem max(2rem, calc((100vw - 1480px) / 2));
  color: #b7c8d5;
  background: #031f3c;
  font-size: 0.8rem;
}
.footer-brand { display: grid; gap: 0.1rem; }
.footer-brand strong { color: var(--white); font-weight: 800; }
.footer-brand span { color: #b7c8d5; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; justify-content: flex-end; }
footer a { color: var(--teal); font-weight: 700; text-decoration: none; }
.footer-links a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 0.45rem 0.9rem;
  border: 1px solid rgba(4, 191, 157, 0.34);
  border-radius: 999px;
  background: rgba(255,255,255,.035);
}
.footer-links a:hover {
  color: var(--white);
  border-color: var(--teal);
  background: rgba(4,191,157,.12);
}

.legal-page { background: var(--mist); }
.legal-back-link {
  color: var(--navy);
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}
.legal-back-link::before { content: "←"; margin-right: 0.5rem; color: var(--teal); }
.legal-main {
  min-height: calc(100vh - 72px);
  background:
    radial-gradient(circle at 88% 7%, rgba(9, 166, 214, 0.12), transparent 24rem),
    var(--mist);
}
.legal-hero {
  width: min(1180px, calc(100% - 4rem));
  margin: 0 auto;
  padding: 5.5rem 0 3.5rem;
}
.legal-hero h1 {
  margin: 0;
  color: var(--navy);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.4rem, 8vw, 6.8rem);
  letter-spacing: -0.055em;
  line-height: 0.95;
}
.legal-hero > p:last-child {
  max-width: 720px;
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}
.legal-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 4.5rem;
  width: min(1180px, calc(100% - 4rem));
  margin: 0 auto;
  padding-bottom: 7rem;
}
.legal-toc {
  position: sticky;
  top: 104px;
  align-self: start;
  display: grid;
  gap: 0.15rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,.82);
  box-shadow: 0 10px 28px rgba(4,43,84,.06);
}
.legal-toc strong {
  margin-bottom: 0.45rem;
  color: var(--navy);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.legal-toc a {
  padding: 0.4rem 0.5rem;
  border-radius: 7px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
  line-height: 1.25;
  text-decoration: none;
}
.legal-toc a:hover { color: var(--navy); background: var(--mist); }
.legal-content { min-width: 0; }
.legal-card {
  padding: clamp(1.4rem, 4vw, 2.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}
.legal-card + .legal-card { margin-top: 1.2rem; }
.legal-card h2 {
  margin: 0 0 1.1rem;
  color: var(--navy);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
}
.legal-card h3 { margin: 1.6rem 0 0.5rem; font-size: 1.05rem; }
.legal-card p { margin: 0.65rem 0; color: var(--muted); }
.legal-card p:last-child { margin-bottom: 0; }
.legal-card a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.legal-card ul { margin: 0.8rem 0; padding-left: 1.25rem; color: var(--muted); }
.legal-card li + li { margin-top: 0.45rem; }
.legal-section { scroll-margin-top: 100px; }
.legal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}
.legal-grid .legal-card { margin: 0; }
.legal-label {
  display: block;
  margin-bottom: 0.8rem;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.legal-address { display: grid; color: var(--muted); font-style: normal; }
.legal-address strong { margin-bottom: 0.35rem; color: var(--navy); font-size: 1.15rem; }
.legal-note {
  margin-top: 1.2rem;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--teal);
  border-radius: 0 10px 10px 0;
  color: var(--muted);
  background: #eaf5f7;
  font-size: 0.9rem;
}
.legal-meta { margin-top: 1.4rem; color: #7b8c9b; font-size: 0.8rem; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.js .reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1120px) {
  .hero-grid { grid-template-columns: 1fr 0.82fr; gap: 2rem; }
  .hero-visual { min-height: 500px; }
  .hero-features { grid-template-columns: 1fr; max-width: 350px; }
  .content-layout { grid-template-columns: 170px minmax(0,1fr); gap: 2rem; }
  .section { padding-inline: 2rem; }
  .section-tint { margin-inline: -2rem; padding-inline: 4rem; }
  .contact-section { margin-left: -2rem; }
}

@media (max-width: 860px) {
  .header-download { display: none; }
  .menu-toggle {
    display: grid;
    width: 46px;
    height: 46px;
    place-content: center;
    gap: 5px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--white);
  }
  .menu-toggle span:not(.sr-only) { display: block; width: 20px; height: 2px; background: var(--navy); transition: transform .2s ease, opacity .2s ease; }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(4) { transform: translateY(-7px) rotate(-45deg); }
  .mobile-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 0.2rem;
    padding: 0.75rem 1.25rem 1.2rem;
    border-top: 1px solid var(--line);
    background: var(--white);
  }
  .js .mobile-nav { display: none; }
  .js .mobile-nav.is-open { display: grid; }
  .mobile-nav a { padding: 0.6rem; color: var(--muted); font-size: 0.85rem; font-weight: 650; text-decoration: none; }
  .mobile-nav a.active { color: var(--navy); background: var(--mist); border-radius: 8px; }
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; min-height: auto; padding: 4.5rem 0 6rem; }
  .hero-copy { position: relative; z-index: 2; }
  .hero h1 { font-size: clamp(4rem, 18vw, 7.3rem); }
  .hero-features { grid-template-columns: repeat(3, minmax(0,1fr)); max-width: none; }
  .hero-features div { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .hero-visual { min-height: 520px; }
  .content-layout { display: block; width: min(100%, 760px); }
  .toc { display: none; }
  .section { padding: 5.5rem 1.5rem; }
  .section-tint { margin-inline: 0; padding-inline: 1.5rem; }
  .contact-section { margin-left: 0; padding-inline: 1.5rem; }
  .split-layout, .conductivity-layout, .communication-layout, .builder-layout { gap: 2.3rem; }
  .legal-layout { grid-template-columns: 1fr; gap: 1.5rem; }
  .legal-toc {
    position: static;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .legal-toc strong { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .header-inner { width: calc(100% - 1.5rem); min-height: 64px; }
  .brand-copy small { display: none; }
  .hero-grid { width: calc(100% - 2rem); padding-top: 3.5rem; }
  .hero-lead { font-size: 1.08rem; }
  .hero-actions { display: grid; }
  .hero-features { grid-template-columns: 1fr; }
  .hero-features div { grid-template-columns: auto 1fr; justify-items: start; text-align: left; }
  .hero-visual { min-height: 390px; }
  .hero-image-main { inset: 0 9% 0 12%; border-radius: 100px 18px 100px 18px; }
  .hero-image-small { width: 39%; border-width: 5px; }
  .hero-badge { top: 8%; width: 105px; height: 105px; font-size: 0.68rem; }
  .hero-badge strong { font-size: 0.85rem; }
  .section, .contact-section { scroll-margin-top: 64px; }
  .section { padding-block: 4.5rem; }
  .section-heading { margin-bottom: 2.2rem; }
  .section h2, .contact-section h2 { font-size: clamp(2.15rem, 11vw, 3.25rem); }
  .split-layout, .conductivity-layout, .communication-layout, .builder-layout, .contact-section { grid-template-columns: 1fr; }
  .photo-panel { max-height: 520px; }
  .photo-panel img { aspect-ratio: 4/4.4; }
  .screen-grid, .engineering-visuals, .module-grid { grid-template-columns: 1fr; }
  .statement, .quote-panel { grid-template-columns: 1fr; gap: 0.65rem; }
  .protocol-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .compact { grid-template-columns: 1fr; }
  .signal-card { min-height: 420px; padding-inline: 1.2rem; }
  .wide-photo img { height: 290px; }
  .builder-image { max-height: 520px; }
  .contact-section { gap: 2rem; padding-block: 4.5rem; }
  footer { flex-direction: column; align-items: flex-start; gap: 1rem; padding: 1.5rem; }
  .footer-links { justify-content: flex-start; }
  .legal-hero, .legal-layout { width: calc(100% - 2rem); }
  .legal-hero { padding: 3.8rem 0 2.5rem; }
  .legal-hero h1 { font-size: clamp(3rem, 16vw, 5rem); }
  .legal-layout { padding-bottom: 4.5rem; }
  .legal-toc { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .legal-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}