:root {
  color-scheme: dark;
  --bg: #030817;
  --panel: rgba(10, 19, 33, .86);
  --panel-2: rgba(15, 28, 45, .92);
  --text: #f7fbff;
  --muted: #aab7c6;
  --line: rgba(255,255,255,.13);
  --blue: #43d8ff;
  --gold: #f1c65a;
  --gold-2: #ae7d22;
  --max: 1180px;
  --radius: 8px;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Space Grotesk", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { overflow-x: hidden; scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 80% 8%, rgba(67,216,255,.16), transparent 28rem),
    radial-gradient(circle at 16% 18%, rgba(241,198,90,.13), transparent 22rem),
    linear-gradient(180deg, #02050d 0%, var(--bg) 48%, #050914 100%);
  color: var(--text);
  line-height: 1.55;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle, rgba(255,255,255,.7) 0 1px, transparent 1.5px),
    linear-gradient(rgba(67,216,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(67,216,255,.035) 1px, transparent 1px);
  background-size: 160px 160px, 76px 76px, 76px 76px;
  opacity: .24;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  width: min(100% - 32px, var(--max));
  margin: 14px auto 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(3,8,23,.82);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; }
.brand img { width: 148px; height: auto; max-height: 72px; object-fit: contain; }
.site-header .brand img { filter: drop-shadow(0 0 12px rgba(67,216,255,.18)); }
.site-nav { display: flex; justify-content: center; gap: 22px; color: rgba(247,251,255,.78); font-size: 14px; font-weight: 760; }
.site-nav a:hover { color: var(--blue); }
.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 900;
}
.header-cta,
.button.primary { border-color: rgba(241,198,90,.74); background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: #060810; }
.button.secondary { border-color: rgba(67,216,255,.36); background: rgba(255,255,255,.045); }
.button.ghost { border-color: rgba(255,255,255,.18); background: rgba(255,255,255,.025); }
.menu-toggle { display: none; width: 42px; height: 38px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.04); }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: var(--text); }

.section-shell,
.hero { width: min(100% - 32px, var(--max)); margin: 0 auto; }
.hero {
  display: grid;
  grid-template-columns: minmax(0,.88fr) minmax(460px,1.12fr);
  align-items: center;
  gap: 48px;
  min-height: calc(100vh - 92px);
  padding: 60px 0 92px;
}
.hero-copy { max-width: 620px; }
.eyebrow { margin: 0 0 14px; color: var(--gold); font-size: 12px; font-weight: 950; letter-spacing: .12em; text-transform: uppercase; }
h1,h2,h3,p { margin-top: 0; }
h1 { margin-bottom: 18px; font-size: clamp(42px, 6.2vw, 78px); line-height: 1.04; letter-spacing: 0; }
h2 { margin-bottom: 16px; font-size: clamp(32px, 4.8vw, 58px); line-height: 1; letter-spacing: 0; }
h3 { margin-bottom: 10px; font-size: 21px; line-height: 1.15; }
.hero-subtitle { color: var(--blue); font-size: clamp(22px, 3vw, 36px); font-weight: 900; line-height: 1.12; }
.hero-text,
.section-heading p,
.product-card p,
.why-grid p,
.application-grid p { color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-visual { position: relative; overflow: hidden; border: 1px solid rgba(67,216,255,.28); border-radius: var(--radius); background: #06101d; box-shadow: 0 42px 90px rgba(0,0,0,.45); }
.hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 38%, rgba(3,8,23,.72)); }
.hero-visual img { width: 100%; height: min(72vh, 660px); min-height: 540px; object-fit: cover; filter: saturate(.9) contrast(1.08) brightness(.82); }
.hero-panel { position: absolute; right: 18px; bottom: 18px; z-index: 1; width: min(72%, 340px); border: 1px solid rgba(67,216,255,.34); border-radius: var(--radius); padding: 16px; background: rgba(3,8,23,.78); backdrop-filter: blur(12px); }
.hero-panel span { display: block; color: var(--gold); font-size: 12px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.hero-panel strong { display: block; margin-top: 7px; color: var(--blue); font-size: 22px; }

.section-heading { display: grid; grid-template-columns: .32fr .68fr; gap: 30px; align-items: end; padding-top: 86px; margin-bottom: 30px; }
.section-heading.compact { padding-top: 74px; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; padding-bottom: 92px; }
.product-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(180deg, rgba(16,30,50,.88), rgba(8,17,31,.78)); }
.product-card.featured { grid-column: span 2; border-color: rgba(241,198,90,.5); }
.product-card img { width: 100%; height: 260px; object-fit: cover; background: #050b14; }
.product-card.featured img { height: 380px; }
.card-body { display: flex; min-height: 290px; flex-direction: column; padding: 20px; }
.product-code { color: var(--gold); font-size: 12px; font-weight: 950; letter-spacing: .12em; text-transform: uppercase; }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: auto; padding-top: 14px; }
.tag-row span { border: 1px solid rgba(241,198,90,.34); border-radius: 999px; padding: 5px 9px; color: #efd38a; font-size: 11px; font-weight: 850; }
.text-link { margin-top: 16px; color: var(--blue); font-weight: 950; }

.applications,
.clients { border-block: 1px solid rgba(67,216,255,.12); background: linear-gradient(180deg, rgba(14,31,53,.52), rgba(3,8,23,.12)); }
.application-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; padding-bottom: 88px; }
.application-grid article { position: relative; min-height: 360px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; background: #050b14; }
.application-grid img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .72; }
.application-grid article::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(3,8,23,.9)); }
.application-grid h3,
.application-grid p { position: relative; z-index: 1; }
.application-grid h3 { margin-top: 210px; }

.why-section { padding-bottom: 90px; }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.why-grid article { min-height: 220px; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: rgba(255,255,255,.04); }
.why-grid span { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; margin-bottom: 28px; border: 1px solid rgba(241,198,90,.44); border-radius: 50%; color: var(--gold); font-weight: 950; }

.client-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; padding-bottom: 90px; }
.client-grid img { width: 100%; height: 92px; object-fit: contain; border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 16px; background: rgba(255,255,255,.88); }

.documents { padding-bottom: 96px; }
.document-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.document-list a { display: grid; gap: 16px; min-height: 150px; border: 1px solid rgba(67,216,255,.24); border-radius: var(--radius); padding: 18px; background: var(--panel); }
.document-list span { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 6px; background: var(--gold); color: #060810; font-size: 12px; font-weight: 950; }
.document-list strong { align-self: end; font-size: 19px; }

.contact-band { border-top: 1px solid rgba(241,198,90,.22); background: linear-gradient(135deg, rgba(241,198,90,.13), rgba(3,8,23,.95)); }
.contact-inner { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 42px; align-items: end; padding: 82px 0; }
.contact-inner h2 { margin-bottom: 0; }
.contact-details { display: grid; gap: 12px; min-width: 290px; }
.contact-details p { margin: 0; color: var(--muted); }
.contact-details a { color: var(--text); font-weight: 950; }
.site-footer { display: flex; justify-content: space-between; gap: 18px; width: min(100% - 32px, var(--max)); margin: 0 auto; padding: 30px 0 36px; color: rgba(247,251,255,.58); font-size: 13px; }

.product-hero { display: grid; grid-template-columns: minmax(0,.9fr) minmax(420px,1fr); gap: 46px; align-items: center; padding: 70px 0 90px; }
.product-hero img { width: 100%; height: 560px; object-fit: cover; border: 1px solid rgba(67,216,255,.28); border-radius: var(--radius); background: #06101d; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding-bottom: 88px; }
.detail-grid article { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: rgba(255,255,255,.04); }
.detail-grid p { color: var(--muted); }

@media (max-width: 1040px) {
  .hero,
  .product-hero { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .product-grid,
  .application-grid,
  .why-grid,
  .client-grid,
  .document-list,
  .detail-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  h1 { font-size: clamp(38px, 12vw, 56px); line-height: 1.06; }
  .site-header { width: 100%; margin-top: 0; grid-template-columns: auto auto; border-inline: 0; border-top: 0; border-radius: 0; padding: 10px 16px; }
  .brand img { width: 132px; }
  .menu-toggle { display: block; justify-self: end; }
  .header-cta { display: none; }
  .site-nav { position: absolute; top: 68px; right: 16px; left: 16px; display: none; flex-direction: column; align-items: stretch; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); padding: 8px; background: #050b14; }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 14px 12px; }
  .hero { gap: 28px; min-height: auto; padding: 22px 0 64px; }
  h2 { font-size: clamp(30px, 11vw, 44px); }
  .hero-visual img,
  .product-hero img { min-height: 340px; height: 340px; }
  .section-heading,
  .product-grid,
  .application-grid,
  .why-grid,
  .client-grid,
  .document-list,
  .contact-inner,
  .site-footer,
  .detail-grid { grid-template-columns: 1fr; }
  .section-heading { gap: 12px; padding-top: 58px; }
  .product-card.featured { grid-column: auto; }
  .product-card.featured img,
  .product-card img { height: 300px; }
  .application-grid article { min-height: 320px; }
  .application-grid h3 { margin-top: 170px; }
  .client-grid img { height: 84px; }
  .contact-details { min-width: 0; }
  .site-footer { display: grid; }
}