:root {
  --bg: #070b14;
  --bg-soft: #0b1220;
  --panel: #0e1626;
  --panel-2: #111d31;
  --blue: #2f80ff;
  --cyan: #4de1ff;
  --violet: #6e7bff;
  --warm: #ffb066;
  --text: #f5f7fa;
  --muted: #aab6c8;
  --border: rgba(118, 164, 255, 0.22);
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 11, 20, 0.9);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(var(--max), calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 42px;
  height: 42px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
}

.button,
button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  background: rgba(47, 128, 255, 0.14);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.button.primary,
button {
  border-color: rgba(77, 225, 255, 0.48);
  background: linear-gradient(135deg, var(--blue), #245ed6);
}

.button:hover,
button:hover {
  transform: translateY(-1px);
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.btn-primary {
  border-color: rgba(77, 225, 255, 0.48);
  background: linear-gradient(135deg, var(--blue), #245ed6);
}

.btn-secondary {
  background: rgba(47, 128, 255, 0.14);
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(90deg, rgba(7, 11, 20, 0.96), rgba(7, 11, 20, 0.76)),
    radial-gradient(circle at 70% 30%, rgba(47, 128, 255, 0.2), transparent 34%);
}

.hero::before,
.band::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(118, 164, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(118, 164, 255, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, #000, transparent);
}

.hero-inner {
  position: relative;
  width: min(var(--max), calc(100% - 32px));
  min-height: calc(100vh - 72px);
  max-height: 860px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  align-items: center;
  gap: 56px;
  padding: 76px 0 64px;
}

.eyebrow {
  display: block;
  margin-bottom: 14px;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(42px, 7vw, 82px);
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
}

h3 {
  font-size: 20px;
}

p {
  margin: 0;
  color: var(--muted);
}

.lead {
  max-width: 680px;
  margin-top: 22px;
  font-size: 19px;
}

.hero-copy > p:first-child {
  margin-bottom: 14px;
  color: var(--cyan);
  font-weight: 800;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-art {
  position: relative;
  min-height: 520px;
  display: grid;
  place-items: center;
}

.hero-art img {
  width: min(100%, 620px);
  filter: drop-shadow(0 28px 70px rgba(47, 128, 255, 0.28));
}

.hero-visual {
  position: relative;
  min-height: 520px;
  display: grid;
  place-items: center;
}

.hero-visual img,
.visual-panel img,
.product-visual img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 60px rgba(47, 128, 255, 0.22));
}

.band {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  padding: 82px 0;
}

.wrap {
  position: relative;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(240px, 0.55fr);
  gap: 32px;
  align-items: end;
  margin-bottom: 36px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  min-height: 196px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(17, 29, 49, 0.92), rgba(14, 22, 38, 0.72));
  padding: 24px;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(77, 225, 255, 0.38);
  box-shadow: 0 12px 40px rgba(47, 128, 255, 0.12);
}

.card h3 {
  margin-bottom: 12px;
}

.list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.list li {
  border-left: 2px solid var(--cyan);
  padding-left: 14px;
  color: var(--muted);
}

.process {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  counter-reset: step;
}

.step {
  counter-increment: step;
  border-top: 2px solid var(--blue);
  padding: 18px 14px;
  background: rgba(14, 22, 38, 0.6);
}

.step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 18px;
  color: var(--cyan);
  font-weight: 800;
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 72px 0 88px;
}

.page h1 {
  font-size: clamp(40px, 6vw, 66px);
  margin-bottom: 22px;
}

.page h2 {
  margin-top: 44px;
  margin-bottom: 14px;
  font-size: 30px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.85fr);
  gap: 38px;
  align-items: center;
}

.product-visual {
  margin: 16px 0 22px;
}

.visual-panel {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(17, 29, 49, 0.52);
  padding: 14px;
}

.cta-band {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border);
  padding: 66px 0;
  background: var(--bg-soft);
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/assets/airflow-lines.svg") center / cover no-repeat;
  opacity: 0.45;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.rfq-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.rfq-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.rfq-form .wide {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0a1020;
  color: var(--text);
  font: inherit;
  padding: 12px;
}

textarea {
  min-height: 132px;
  resize: vertical;
}

.honeypot {
  position: absolute;
  left: -10000px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 42px 0;
  background: #050812;
}

.footer-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 16px;
}

@media (max-width: 900px) {
  .hero-inner,
  .section-head,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: auto;
    padding-top: 54px;
  }

  .hero-art {
    min-height: 320px;
  }

  .hero-visual {
    min-height: 320px;
  }

  .grid,
  .grid.three,
  .page-grid,
  .process,
  .rfq-form {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .nav-links {
    width: 100%;
    flex-wrap: wrap;
  }
}

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