:root {
  --ink: #071923;
  --ink-2: #0b2632;
  --ink-3: #123b49;
  --paper: #f7fbfc;
  --white: #ffffff;
  --muted: #5d7480;
  --muted-light: #a9c0c9;
  --line: rgba(8, 52, 65, 0.14);
  --teal: #27d4c4;
  --teal-2: #7bf1df;
  --blue: #319cf6;
  --cyan: #80dffd;
  --violet: #895ce7;
  --coral: #f05b58;
  --radius-sm: 12px;
  --radius: 22px;
  --radius-lg: 34px;
  --shadow: 0 24px 60px rgba(2, 31, 44, 0.12);
  --shadow-soft: 0 14px 32px rgba(2, 31, 44, 0.08);
  --container: 1180px;
  --header-height: 82px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }

::selection { background: rgba(39, 212, 196, 0.28); }

.skip-link {
  position: fixed;
  left: 18px;
  top: -80px;
  z-index: 9999;
  padding: 12px 18px;
  background: var(--white);
  color: var(--ink);
  border-radius: 10px;
  box-shadow: var(--shadow);
  transition: top .2s ease;
}
.skip-link:focus { top: 18px; }

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-dark {
  color: var(--white);
  background:
    radial-gradient(circle at 15% 25%, rgba(39, 212, 196, .12), transparent 32%),
    radial-gradient(circle at 88% 72%, rgba(49, 156, 246, .12), transparent 34%),
    var(--ink);
}
.section-ink { background: var(--ink-2); color: var(--white); }
.section-white { background: var(--white); }
.section-tint {
  background:
    radial-gradient(circle at 92% 5%, rgba(49, 156, 246, .09), transparent 28%),
    radial-gradient(circle at 2% 95%, rgba(39, 212, 196, .1), transparent 30%),
    #eef8f9;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: #117c7a;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.section-dark .eyebrow,
.section-ink .eyebrow,
.page-hero .eyebrow { color: var(--teal-2); }
.eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: "Arial Narrow", "Roboto Condensed", ui-sans-serif, system-ui, sans-serif;
  line-height: 1.08;
  letter-spacing: -.035em;
}
h1 { font-size: clamp(3rem, 7vw, 6.4rem); }
h2 { font-size: clamp(2.25rem, 4.8vw, 4.35rem); }
h3 { font-size: clamp(1.35rem, 2.2vw, 2rem); }
h4 { font-size: 1.1rem; }
p { margin: 0 0 18px; }
.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.8vw, 1.28rem);
  line-height: 1.75;
}
.section-dark .lead,
.section-ink .lead,
.page-hero .lead { color: rgba(237, 248, 250, .78); }
.section-heading { max-width: 850px; margin-bottom: 48px; }
.section-heading p { margin-top: 22px; }

.text-gradient {
  color: transparent;
  background: linear-gradient(90deg, var(--teal-2), var(--cyan), #b8a5ff);
  -webkit-background-clip: text;
  background-clip: text;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  height: var(--header-height);
  background: rgba(5, 24, 34, .9);
  border-bottom: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.nav-shell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 26px;
}
.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  background: rgba(255,255,255,.96);
  padding: 6px 12px;
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(0,0,0,.12);
}
.brand img { width: 154px; height: auto; }
.nav-links { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-links > a,
.nav-dropdown > button {
  border: 0;
  background: transparent;
  padding: 12px 13px;
  border-radius: 12px;
  color: rgba(245, 252, 253, .78);
  font-size: .92rem;
  font-weight: 700;
  cursor: pointer;
  transition: .2s ease;
}
.nav-links > a:hover,
.nav-links > a[aria-current="page"],
.nav-dropdown > button:hover,
.nav-dropdown.is-open > button {
  color: var(--white);
  background: rgba(255,255,255,.08);
}
.nav-dropdown { position: relative; }
.nav-dropdown > button::after { content: "⌄"; margin-left: 6px; font-size: .85em; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 260px;
  padding: 10px;
  background: rgba(8, 31, 42, .98);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 18px;
  box-shadow: 0 24px 46px rgba(0,0,0,.3);
  opacity: 0;
  transform: translateY(8px);
  visibility: hidden;
  pointer-events: none;
  transition: .2s ease;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu,
.nav-dropdown.is-open .dropdown-menu {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}
.dropdown-menu a {
  display: block;
  padding: 11px 12px;
  border-radius: 10px;
  color: rgba(245,252,253,.76);
  font-size: .91rem;
  font-weight: 650;
}
.dropdown-menu a:hover { color: var(--white); background: rgba(255,255,255,.07); }
.nav-cta { margin-left: 7px; }
.mobile-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
  border-radius: 13px;
  cursor: pointer;
}
.mobile-toggle span,
.mobile-toggle::before,
.mobile-toggle::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  border-radius: 9px;
  background: var(--white);
  transition: .2s ease;
}
.site-header.is-open .mobile-toggle span { opacity: 0; }
.site-header.is-open .mobile-toggle::before { transform: translateY(7px) rotate(45deg); }
.site-header.is-open .mobile-toggle::after { transform: translateY(-7px) rotate(-45deg); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 21px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-weight: 800;
  line-height: 1.1;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  color: #02242b;
  background: linear-gradient(135deg, var(--teal-2), var(--teal));
  box-shadow: 0 14px 28px rgba(39, 212, 196, .24);
}
.btn-primary:hover { box-shadow: 0 18px 34px rgba(39, 212, 196, .32); }
.btn-secondary {
  color: var(--white);
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.18);
}
.btn-secondary:hover { background: rgba(255,255,255,.12); }
.btn-dark { background: var(--ink); color: var(--white); }
.btn-light { background: var(--white); color: var(--ink); box-shadow: var(--shadow-soft); }
.btn-outline { color: var(--ink); border-color: rgba(6,44,57,.2); background: transparent; }
.button-row { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
.arrow { font-size: 1.18em; transition: transform .2s ease; }
.btn:hover .arrow, .text-link:hover .arrow { transform: translateX(4px); }

/* Home hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4,23,32,.98) 0%, rgba(4,23,32,.9) 42%, rgba(4,23,32,.36) 72%, rgba(4,23,32,.58) 100%),
    url("../images/hero-duct-protection.webp") center right / cover no-repeat;
  transform: scale(1.015);
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -34% -12%;
  height: 54%;
  background: radial-gradient(ellipse, rgba(39,212,196,.18), transparent 66%);
  filter: blur(18px);
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, .55fr);
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  gap: 70px;
  padding: 90px 0 70px;
}
.hero-copy { max-width: 790px; }
.hero-copy h1 { max-width: 800px; }
.hero-copy .lead { max-width: 670px; margin-top: 24px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding: 8px 13px;
  border: 1px solid rgba(123,241,223,.25);
  border-radius: 999px;
  color: var(--teal-2);
  background: rgba(39,212,196,.08);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hero-kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 7px rgba(39,212,196,.1);
}
.hero-panel {
  align-self: end;
  margin-bottom: 12px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  background: rgba(4, 23, 32, .62);
  box-shadow: 0 24px 50px rgba(0,0,0,.2);
  backdrop-filter: blur(16px);
}
.hero-panel strong { display: block; margin-bottom: 15px; color: var(--teal-2); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.hero-panel ul { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.hero-panel li { position: relative; padding-left: 25px; color: rgba(240,249,251,.84); font-size: .94rem; }
.hero-panel li::before { content: "✓"; position: absolute; left: 0; color: var(--teal-2); font-weight: 900; }

.airflow {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  opacity: .72;
}
.airflow span {
  position: absolute;
  width: clamp(180px, 28vw, 430px);
  height: 2px;
  border-radius: 100%;
  background: linear-gradient(90deg, transparent, rgba(123,241,223,.95), rgba(49,156,246,.7), transparent);
  filter: drop-shadow(0 0 8px rgba(39,212,196,.55));
  animation: drift 9s linear infinite;
}
.airflow span:nth-child(1) { top: 28%; left: -28%; animation-delay: -1s; transform: rotate(-5deg); }
.airflow span:nth-child(2) { top: 47%; left: -38%; animation-delay: -5s; width: 520px; }
.airflow span:nth-child(3) { top: 66%; left: -24%; animation-delay: -7.5s; transform: rotate(4deg); }
@keyframes drift { to { left: 112%; } }

.trust-strip {
  position: relative;
  z-index: 3;
  margin-top: -1px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.trust-grid {
  display: grid;
  grid-template-columns: 1.15fr repeat(4, 1fr);
  align-items: stretch;
}
.trust-intro, .trust-item { padding: 24px 22px; border-right: 1px solid var(--line); }
.trust-item:last-child { border-right: 0; }
.trust-intro { padding-left: 0; color: #157b78; font-weight: 850; }
.trust-item { display: flex; align-items: center; gap: 11px; color: var(--muted); font-size: .9rem; font-weight: 700; }
.trust-icon { width: 9px; height: 9px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 5px rgba(39,212,196,.12); }

/* Cards and layout */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 20px; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, .92fr); align-items: center; gap: 72px; }
.split.reverse { grid-template-columns: minmax(360px, .92fr) minmax(0,1fr); }
.split.reverse .split-media { order: -1; }
.card {
  position: relative;
  overflow: hidden;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.card-dark {
  color: var(--white);
  background: rgba(255,255,255,.055);
  border-color: rgba(255,255,255,.1);
  box-shadow: none;
}
.card h3 { margin-bottom: 14px; }
.card p { color: var(--muted); }
.card-dark p { color: rgba(237,248,250,.72); }
.card-number {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 24px;
  border-radius: 14px;
  color: #06363a;
  background: linear-gradient(135deg, var(--teal-2), var(--teal));
  font-weight: 900;
}
.icon-box {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 24px;
  border-radius: 16px;
  color: var(--teal-2);
  background: var(--ink);
  font-size: 1.3rem;
  font-weight: 900;
}
.card-dark .icon-box { background: rgba(255,255,255,.08); }
.card-accent::after {
  content: "";
  position: absolute;
  width: 160px;
  height: 160px;
  right: -68px;
  bottom: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(39,212,196,.16), transparent 68%);
}

.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: var(--ink-2);
}
.media-frame img { width: 100%; height: 100%; min-height: 440px; object-fit: cover; }
.media-frame.contain { background: var(--white); }
.media-frame.contain img { object-fit: contain; padding: 16px; }
.media-badge {
  position: absolute;
  left: 22px;
  bottom: 22px;
  max-width: calc(100% - 44px);
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 14px;
  color: var(--white);
  background: rgba(4,23,32,.76);
  backdrop-filter: blur(12px);
  font-size: .88rem;
  font-weight: 750;
}

.feature-list { display: grid; gap: 14px; margin: 28px 0 0; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 30px; color: var(--muted); }
.section-dark .feature-list li, .section-ink .feature-list li { color: rgba(237,248,250,.76); }
.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  color: #0b9e92;
  font-weight: 900;
}
.section-dark .feature-list li::before, .section-ink .feature-list li::before { color: var(--teal-2); }

.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 12px; color: #0b8c87; font-weight: 850; }
.section-dark .text-link, .section-ink .text-link { color: var(--teal-2); }

/* Problem statement */
.problem-panel {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--ink);
  box-shadow: var(--shadow);
}
.problem-copy { padding: clamp(34px, 6vw, 72px); color: var(--white); }
.problem-copy p { color: rgba(237,248,250,.74); }
.problem-media img { width: 100%; height: 100%; min-height: 440px; object-fit: cover; }

/* Process */
.process-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.process-card {
  padding: 28px 24px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.11);
}
.process-card .card-number { margin-bottom: 30px; }
.process-card p { color: rgba(237,248,250,.7); }
.process-line { position: relative; }
.process-line::before {
  content: "";
  position: absolute;
  top: 51px;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(123,241,223,.5), transparent);
}
.process-grid { position: relative; }
.process-grid > * { position: relative; z-index: 1; }

/* Sector cards */
.sector-card {
  position: relative;
  min-height: 390px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  padding: 28px;
  border-radius: var(--radius-lg);
  color: var(--white);
  background: var(--ink-2);
  box-shadow: var(--shadow-soft);
}
.sector-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4,23,32,.03), rgba(4,23,32,.92) 78%),
    var(--sector-image) center/cover no-repeat;
  transform: scale(1.01);
  transition: transform .45s ease;
}
.sector-card:hover::before { transform: scale(1.055); }
.sector-card > * { position: relative; z-index: 1; }
.sector-card p { color: rgba(241,249,250,.72); }
.sector-health { --sector-image: url("../images/ventilation-system.webp"); }
.sector-commercial { --sector-image: url("../images/airborne-contamination.webp"); }
.sector-bio { --sector-image: url("../images/ultrasonic-bonding.webp"); }

/* Metrics */
.metrics { display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow-soft); }
.metric { padding: 32px 24px; border-right: 1px solid var(--line); }
.metric:last-child { border-right: 0; }
.metric strong { display: block; margin-bottom: 8px; color: #0d8782; font-family: "Arial Narrow", sans-serif; font-size: 2rem; line-height: 1; }
.metric span { color: var(--muted); font-size: .88rem; }

/* Story */
.timeline { position: relative; display: grid; gap: 22px; margin-top: 40px; }
.timeline::before { content: ""; position: absolute; left: 24px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--teal), rgba(49,156,246,.25)); }
.timeline-item { position: relative; display: grid; grid-template-columns: 50px 1fr; gap: 22px; }
.timeline-dot { position: relative; z-index: 1; display: grid; place-items: center; width: 50px; height: 50px; border: 5px solid #eef8f9; border-radius: 50%; color: var(--ink); background: var(--teal-2); font-weight: 900; }
.timeline-content { padding: 4px 0 24px; }
.timeline-content p { color: var(--muted); }
.quote-block {
  position: relative;
  padding: 44px;
  border-radius: var(--radius-lg);
  color: var(--white);
  background: linear-gradient(135deg, var(--ink), #0e3d4b);
  box-shadow: var(--shadow);
}
.quote-block::before { content: "“"; position: absolute; top: 8px; left: 22px; color: rgba(123,241,223,.22); font-family: Georgia, serif; font-size: 9rem; line-height: 1; }
.quote-block blockquote { position: relative; z-index: 1; margin: 0; font-size: clamp(1.4rem,2.6vw,2.15rem); line-height: 1.35; font-weight: 650; }

/* Page hero */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 105px 0 90px;
  color: var(--white);
  background:
    radial-gradient(circle at 85% 22%, rgba(49,156,246,.18), transparent 30%),
    radial-gradient(circle at 16% 82%, rgba(39,212,196,.13), transparent 30%),
    var(--ink);
}
.page-hero::after {
  content: "";
  position: absolute;
  width: 440px;
  height: 440px;
  top: -210px;
  right: -110px;
  border: 1px solid rgba(123,241,223,.12);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(123,241,223,.025), 0 0 0 120px rgba(49,156,246,.018);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { max-width: 920px; font-size: clamp(3rem,6.5vw,5.8rem); }
.page-hero .lead { margin-top: 24px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; color: rgba(237,248,250,.58); font-size: .82rem; }
.breadcrumbs a:hover { color: var(--white); }
.breadcrumbs span::before { content: "/"; margin-right: 8px; }

/* Interactive tabs */
.tabs { display: grid; grid-template-columns: .42fr .58fr; gap: 34px; align-items: stretch; }
.tab-list { display: grid; gap: 10px; }
.tab-button {
  width: 100%;
  padding: 22px;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: var(--white);
  cursor: pointer;
  transition: .2s ease;
}
.tab-button strong { display: block; margin-bottom: 4px; }
.tab-button span { color: var(--muted); font-size: .88rem; }
.tab-button[aria-selected="true"] { border-color: rgba(39,212,196,.7); background: #e9fbf8; box-shadow: var(--shadow-soft); }
.tab-panel { display: none; min-height: 510px; overflow: hidden; border-radius: var(--radius-lg); background: var(--ink); box-shadow: var(--shadow); }
.tab-panel.is-active { display: grid; grid-template-rows: 1fr auto; }
.tab-panel img { width: 100%; height: 350px; object-fit: cover; }
.tab-panel-copy { padding: 28px; color: var(--white); }
.tab-panel-copy p { color: rgba(237,248,250,.72); }

/* Accordions */
.accordion { display: grid; gap: 12px; }
.accordion-item { overflow: hidden; border: 1px solid var(--line); border-radius: 17px; background: var(--white); }
.accordion-button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 24px; border: 0; background: transparent; text-align: left; font-weight: 850; cursor: pointer; }
.accordion-button::after { content: "+"; flex: 0 0 auto; font-size: 1.4rem; color: #0a8e88; }
.accordion-button[aria-expanded="true"]::after { content: "−"; }
.accordion-panel { display: none; padding: 0 24px 22px; color: var(--muted); }
.accordion-panel.is-open { display: block; }

/* Resources */
.resource-card { display: flex; flex-direction: column; min-height: 100%; }
.resource-type { display: inline-flex; align-self: flex-start; padding: 6px 10px; margin-bottom: 24px; border-radius: 999px; color: #0b756f; background: #e5f9f6; font-size: .72rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.resource-card .text-link { margin-top: auto; }
.status-note { padding: 22px 24px; border-left: 4px solid var(--teal); border-radius: 0 16px 16px 0; background: #eaf9f7; color: #355d64; }

/* Forms */
.contact-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 40px; align-items: start; }
.contact-card { padding: 32px; border-radius: var(--radius); background: var(--ink); color: var(--white); box-shadow: var(--shadow); }
.contact-card p { color: rgba(237,248,250,.72); }
.contact-list { display: grid; gap: 18px; margin-top: 28px; }
.contact-item { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: start; }
.contact-item-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; background: rgba(255,255,255,.08); color: var(--teal-2); }
.contact-item small { display: block; color: rgba(237,248,250,.5); }
.contact-item a { font-weight: 750; }
.contact-phone-links { display: grid; gap: 4px; }
.form-card { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow-soft); }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { color: #244851; font-size: .86rem; font-weight: 800; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid #c9dbdf;
  border-radius: 13px;
  padding: 13px 14px;
  color: var(--ink);
  background: #fbfefe;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.field textarea { min-height: 150px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(39,212,196,.13); background: var(--white); }
.field-help { color: var(--muted); font-size: .78rem; }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 22px; }
.form-note { color: var(--muted); font-size: .8rem; }
.form-status { display: none; margin-bottom: 22px; padding: 14px 16px; border-radius: 12px; }
.form-status.is-visible { display: block; }
.form-status.is-success { color: #0b5e4e; background: #e5f8ef; border: 1px solid #b9e9d2; }
.form-status.is-error { color: #7a2929; background: #fff0f0; border: 1px solid #efc5c5; }
.honeypot { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }

/* CTA */
.cta-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 34px;
  padding: clamp(34px,6vw,64px);
  border-radius: var(--radius-lg);
  color: var(--white);
  background: linear-gradient(135deg, #0a3441, #075d63);
  box-shadow: var(--shadow);
}
.cta-panel::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -180px;
  top: -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123,241,223,.28), transparent 68%);
}
.cta-panel > * { position: relative; z-index: 1; }
.cta-panel p { margin: 15px 0 0; color: rgba(237,248,250,.72); }

/* Footer */
.site-footer { color: rgba(237,248,250,.7); background: #031118; }
.footer-main { display: grid; grid-template-columns: 1.15fr .7fr .7fr .8fr; gap: 42px; padding: 66px 0 48px; }
.footer-brand { display: inline-flex; padding: 8px 12px; border-radius: 14px; background: var(--white); }
.footer-brand img { width: 170px; }
.footer-copy { max-width: 340px; margin-top: 20px; color: rgba(237,248,250,.6); }
.footer-title { margin-bottom: 15px; color: var(--white); font-size: .78rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.footer-links { display: grid; gap: 9px; }
.footer-links a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 22px 0 28px; border-top: 1px solid rgba(255,255,255,.08); color: rgba(237,248,250,.45); font-size: .82rem; }

.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 400;
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border: 2px solid rgba(255,255,255,.88);
  border-radius: 50%;
  color: var(--white);
  background-color: #25d366;
  background-image: url("../images/whatsapp-icon.svg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 32px 32px;
  box-shadow: 0 16px 34px rgba(0,0,0,.24), 0 0 0 6px rgba(37,211,102,.12);
  font-size: 0;
  line-height: 0;
  transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease;
}
.whatsapp-float::before {
  content: "WhatsApp";
  position: absolute;
  top: 50%;
  right: calc(100% + 12px);
  padding: 8px 11px;
  border-radius: 9px;
  color: #fff;
  background: #075e54;
  box-shadow: 0 10px 24px rgba(0,0,0,.2);
  font-size: .78rem;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translate(8px,-50%);
  transition: opacity .2s ease, transform .2s ease;
}
.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  background-color: #20bd5a;
  box-shadow: 0 18px 38px rgba(0,0,0,.28), 0 0 0 7px rgba(37,211,102,.17);
  transform: translateY(-3px) scale(1.04);
}
.whatsapp-float:hover::before,
.whatsapp-float:focus-visible::before {
  opacity: 1;
  transform: translate(0,-50%);
}
.whatsapp-float:focus-visible {
  outline: 3px solid rgba(37,211,102,.35);
  outline-offset: 4px;
}

/* Reveal */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* 404 */
.error-page { min-height: calc(100vh - var(--header-height)); display: grid; place-items: center; padding: 70px 0; color: var(--white); background: var(--ink); text-align: center; }
.error-code { color: var(--teal-2); font-size: clamp(6rem,18vw,13rem); font-weight: 900; line-height: .8; opacity: .22; }
.error-page h1 { margin-top: -28px; font-size: clamp(2.5rem,5vw,4.5rem); }
.error-page p { max-width: 600px; margin: 18px auto 0; color: rgba(237,248,250,.72); }

@media (max-width: 1050px) {
  .nav-links > a, .nav-dropdown > button { padding-inline: 9px; font-size: .86rem; }
  .nav-cta { display: none; }
  .hero-grid { grid-template-columns: 1fr; align-content: center; }
  .hero-panel { max-width: 560px; align-self: auto; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .trust-intro { grid-column: 1 / -1; border-right: 0; border-bottom: 1px solid var(--line); padding-left: 22px; }
  .trust-item:nth-child(odd) { border-right: 0; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .process-grid { grid-template-columns: repeat(2,1fr); }
  .process-line::before { display: none; }
  .metrics { grid-template-columns: repeat(2,1fr); }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .footer-main { grid-template-columns: 1.3fr repeat(2,1fr); }
  .footer-main > :last-child { grid-column: 2 / -1; }
}

@media (max-width: 820px) {
  :root { --header-height: 72px; }
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 74px 0; }
  .mobile-toggle { display: block; }
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
    margin: 0;
    padding: 22px 18px 80px;
    overflow-y: auto;
    background: rgba(3,17,24,.98);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .25s ease, visibility .25s ease;
  }
  .site-header.is-open .nav-links { transform: translateX(0); visibility: visible; }
  .nav-links > a, .nav-dropdown > button { display: block; width: 100%; padding: 14px; text-align: left; font-size: 1rem; }
  .nav-dropdown > button::after { float: right; }
  .dropdown-menu { position: static; display: none; min-width: 0; margin: 4px 0 10px; padding: 8px; opacity: 1; transform: none; visibility: visible; pointer-events: auto; box-shadow: none; background: rgba(255,255,255,.04); }
  .nav-dropdown.is-open .dropdown-menu { display: block; }
  .hero::before { background: linear-gradient(90deg, rgba(4,23,32,.97), rgba(4,23,32,.76)), url("../images/hero-duct-protection.webp") center/cover no-repeat; }
  .hero-grid { min-height: auto; padding: 80px 0; gap: 38px; }
  .hero-panel { margin: 0; }
  .split, .split.reverse, .problem-panel, .contact-layout, .tabs { grid-template-columns: 1fr; }
  .split.reverse .split-media { order: initial; }
  .media-frame img { min-height: 350px; }
  .problem-copy { order: 2; }
  .problem-media img { min-height: 320px; }
  .grid-3 { grid-template-columns: 1fr; }
  .cta-panel { grid-template-columns: 1fr; }
  .tab-panel { min-height: auto; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-main > :last-child { grid-column: auto; }
}

@media (max-width: 560px) {
  h1 { font-size: clamp(2.65rem,14vw,4rem); }
  h2 { font-size: clamp(2.1rem,11vw,3.1rem); }
  .brand img { width: 135px; }
  .trust-grid, .grid-2, .grid-4, .process-grid, .metrics, .form-grid, .footer-main { grid-template-columns: 1fr; }
  .trust-intro, .trust-item { grid-column: auto; border-right: 0; border-bottom: 1px solid var(--line); padding-left: 0; padding-right: 0; }
  .trust-item:last-child { border-bottom: 0; }
  .metric { border-right: 0; border-bottom: 1px solid var(--line); }
  .metric:last-child { border-bottom: 0; }
  .field.full { grid-column: auto; }
  .card, .form-card, .contact-card { padding: 25px; }
  .page-hero { padding: 78px 0 68px; }
  .footer-bottom { flex-direction: column; }
  .whatsapp-float { right: 15px; bottom: 15px; width: 52px; height: 52px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Aviation & airports */
.sector-aviation { --sector-image: url("../images/aviation-hero.webp"); }
.sector-solution-grid .sector-card { min-height: 360px; }
.aviation-home {
  color: var(--white);
  background:
    radial-gradient(circle at 12% 18%, rgba(49,156,246,.18), transparent 30%),
    radial-gradient(circle at 88% 80%, rgba(39,212,196,.16), transparent 32%),
    #061a25;
}
.aviation-home-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.aviation-home-media { position: relative; overflow: hidden; min-height: 470px; border-radius: var(--radius-lg); box-shadow: 0 28px 70px rgba(0,0,0,.34); }
.aviation-home-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 58%, rgba(4,23,32,.38)); pointer-events: none; }
.aviation-home-media img { width: 100%; height: 100%; min-height: 470px; object-fit: cover; }
.aviation-home-copy .lead { color: rgba(237,248,250,.76); }
.aviation-chip-row { display: flex; flex-wrap: wrap; gap: 9px; margin: 26px 0 30px; }
.aviation-chip-row span { padding: 8px 11px; border: 1px solid rgba(123,241,223,.18); border-radius: 999px; color: rgba(237,248,250,.8); background: rgba(255,255,255,.055); font-size: .78rem; font-weight: 750; }

.aviation-page-hero { min-height: 720px; display: flex; align-items: center; padding: 110px 0; background: var(--ink); }
.aviation-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(3,18,27,.97) 0%, rgba(3,18,27,.88) 42%, rgba(3,18,27,.25) 78%, rgba(3,18,27,.48) 100%),
    url("../images/aviation-hero.webp") center right / cover no-repeat;
}
.aviation-page-hero::after { width: 620px; height: 620px; top: -310px; right: -120px; }
.aviation-hero-content { position: relative; z-index: 2; }
.aviation-hero-content h1 { max-width: 870px; }
.aviation-hero-content .lead { max-width: 760px; }
.partnership-badge { display: inline-flex; align-items: center; gap: 7px; margin-top: 30px; padding: 10px 14px; border: 1px solid rgba(255,255,255,.13); border-radius: 999px; color: rgba(237,248,250,.66); background: rgba(4,23,32,.55); font-size: .78rem; backdrop-filter: blur(12px); }
.partnership-badge strong { color: var(--teal-2); letter-spacing: .04em; }

.aviation-risk-strip { color: var(--white); background: #092936; border-top: 1px solid rgba(255,255,255,.07); border-bottom: 1px solid rgba(255,255,255,.07); }
.aviation-risk-grid { display: grid; grid-template-columns: repeat(5,1fr); }
.aviation-risk-grid > div { padding: 24px 20px; border-right: 1px solid rgba(255,255,255,.08); }
.aviation-risk-grid > div:last-child { border-right: 0; }
.aviation-risk-grid strong { display: block; color: var(--teal-2); font-family: "Arial Narrow", sans-serif; font-size: 1.35rem; line-height: 1.05; }
.aviation-risk-grid span { display: block; margin-top: 5px; color: rgba(237,248,250,.62); font-size: .78rem; }

.aviation-zone-grid .card { min-height: 280px; }
.aviation-steps { display: grid; gap: 12px; margin-top: 30px; }
.aviation-steps > div { display: grid; grid-template-columns: 42px 92px 1fr; gap: 13px; align-items: center; padding: 13px 15px; border: 1px solid rgba(8,52,65,.11); border-radius: 15px; background: rgba(255,255,255,.72); }
.aviation-steps span { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; color: #06363a; background: linear-gradient(135deg,var(--teal-2),var(--teal)); font-weight: 900; }
.aviation-steps strong { color: var(--ink); }
.aviation-steps small { color: var(--muted); font-size: .82rem; line-height: 1.45; }
.aviation-metrics .metric strong { font-size: 1.55rem; }
.aviation-disclaimer { margin-top: 26px; padding: 17px 19px; border-left: 3px solid var(--teal); color: #45666e; background: rgba(255,255,255,.72); border-radius: 0 14px 14px 0; font-size: .87rem; }
.aviation-resource-banner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px; margin-top: 30px; padding: 28px 30px; border: 1px solid rgba(49,156,246,.18); border-radius: var(--radius); background: linear-gradient(135deg,#eefafa,#edf4ff); box-shadow: var(--shadow-soft); }
.aviation-resource-banner .resource-type { margin-bottom: 14px; }
.aviation-resource-banner h3 { margin-bottom: 9px; }
.aviation-resource-banner p { margin: 0; color: var(--muted); }

@media (max-width: 1050px) {
  .sector-solution-grid { grid-template-columns: repeat(2,1fr); }
  .aviation-risk-grid { grid-template-columns: repeat(3,1fr); }
  .aviation-risk-grid > div { border-bottom: 1px solid rgba(255,255,255,.08); }
  .aviation-home-grid { gap: 38px; }
}
@media (max-width: 820px) {
  .aviation-home-grid { grid-template-columns: 1fr; }
  .aviation-home-media { min-height: 360px; }
  .aviation-home-media img { min-height: 360px; }
  .aviation-page-hero { min-height: auto; padding: 92px 0 80px; }
  .aviation-page-hero::before { background: linear-gradient(90deg,rgba(3,18,27,.96),rgba(3,18,27,.66)),url("../images/aviation-hero.webp") center/cover no-repeat; }
  .aviation-risk-grid { grid-template-columns: repeat(2,1fr); }
  .aviation-resource-banner { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .sector-solution-grid, .aviation-risk-grid { grid-template-columns: 1fr; }
  .aviation-risk-grid > div { border-right: 0; }
  .aviation-steps > div { grid-template-columns: 42px 1fr; }
  .aviation-steps small { grid-column: 2; }
  .aviation-home-media, .aviation-home-media img { min-height: 280px; }
}