:root {
  --brand: #0f7e90;
  --brand-dark: #073a44;
  --accent: #ef9a21;
  --text: #1a2530;
  --muted: #5f6f7e;
  --line: #dde5ea;
  --surface: #f5f8fb;
  --white: #ffffff;
  --font-heading: "Montserrat", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --font-body: "DM Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --wrap: min(1200px, 92vw);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  background: #fff;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: var(--wrap); margin-inline: auto; }

.site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 120;
  backdrop-filter: blur(7px);
  background: rgba(6, 31, 39, 0.75);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.topbar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  color: #d6e6ea;
  font-size: 13px;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 0;
  align-items: center;
}

.topbar-copy { margin: 0; }
.topbar-link {
  font-weight: 700;
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 72px;
  gap: 20px;
}

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

.menu {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: #f3f9fb;
}

.menu a { opacity: 0.92; }
.menu a:hover { opacity: 1; }
.menu a.is-active {
  opacity: 1;
  font-weight: 700;
}

.menu-cta {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: 9px 14px;
}

.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.mobile-toggle span {
  width: 18px;
  height: 2px;
  background: #fff;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: center;
  isolation: isolate;
  color: #fff;
}

.hero-slider,
.slide,
.hero-overlay { position: absolute; inset: 0; }

.slide {
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease;
}

.slide.active { opacity: 1; }

.hero-overlay {
  background:
    radial-gradient(900px 500px at 10% 20%, rgba(22, 188, 216, 0.4), transparent 65%),
    linear-gradient(95deg, rgba(1, 16, 20, 0.75) 0%, rgba(4, 27, 33, 0.55) 45%, rgba(7, 50, 58, 0.5) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 140px;
  padding-bottom: 70px;
  max-width: 760px;
}

.hero-tag {
  display: inline-flex;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(36px, 6vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 18px 0 0;
  font-size: 18px;
  line-height: 1.6;
  color: #d8ecef;
  max-width: 65ch;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #d67900);
  color: #fff;
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.section { padding: 84px 0; }
.section-head { margin-bottom: 24px; }
.section h2 {
  font-family: var(--font-heading);
  margin: 0 0 10px;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.14;
}

.section p { margin: 0; color: var(--muted); line-height: 1.7; }

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 12px;
  color: #2d5e67;
  font-weight: 700;
}

.intro { background: linear-gradient(180deg, #ffffff 0%, #eef8fb 100%); }

.intro-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: start;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.stats div {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  background: #fff;
}

.stats strong {
  display: block;
  font-family: var(--font-heading);
  color: var(--brand-dark);
  font-size: 34px;
  margin-bottom: 6px;
}

.stats span {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

.products {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.product-card {
  min-height: 320px;
  border-radius: 20px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  color: #fff;
  background-size: cover;
  background-position: center;
}

.product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2, 12, 15, 0.2), rgba(2, 12, 15, 0.88));
}

.product-card > * { position: relative; z-index: 1; }

.product-card h3 {
  margin: 0 0 8px;
  font-size: 22px;
  font-family: var(--font-heading);
}

.product-card p { color: #d6e6e8; font-size: 14px; }

.product-card a {
  width: fit-content;
  font-weight: 700;
  border-bottom: 2px solid rgba(255, 255, 255, 0.55);
  padding-bottom: 2px;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.application-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
}

.application-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.application-card h3 {
  margin: 14px 14px 6px;
  font-size: 20px;
  font-family: var(--font-heading);
}

.application-card p { margin: 0 14px 12px; font-size: 14px; }

.application-card a {
  margin: 0 14px 14px;
  display: inline-block;
  color: var(--brand-dark);
  font-weight: 700;
  border-bottom: 2px solid #98bbc2;
}

.updates { background: #0a2229; color: #e4f2f6; }
.updates p { color: #b7ced6; }

.news-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.news-tabs button {
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #d6e5ea;
  border-radius: 999px;
  background: transparent;
  padding: 8px 13px;
  cursor: pointer;
}

.news-tabs .active,
.news-tabs button:hover { background: #fff; color: #0f2b31; }

.news-panel { display: none; border-top: 1px solid rgba(255, 255, 255, 0.15); }
.news-panel.active { display: block; }

.news-item {
  display: block;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  font-weight: 500;
}

.news-item:hover { color: #fff; }

.service { background: linear-gradient(180deg, #f2f9fa 0%, #ffffff 100%); }

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: start;
}

.service-links {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
}

.service-links a {
  display: block;
  padding: 16px;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
  color: #15353b;
}

.service-links a:last-child { border-bottom: none; }

.contact {
  background: #f8fbfc;
  border-top: 1px solid var(--line);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 28px;
  align-items: start;
}

.office-block {
  margin-top: 18px;
  border-left: 3px solid var(--accent);
  padding-left: 12px;
}

.office-block h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: #133238;
}

.contact-form label:nth-child(7),
.contact-form .btn,
.contact-form .fineprint {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #cad8df;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  color: #17363d;
  background: #fff;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(15, 126, 144, 0.22);
  border-color: var(--brand);
}

textarea { resize: vertical; }
.fineprint { margin: 0; font-size: 12px; color: #6e808a; }

.footer {
  background: #04171d;
  color: #c3d8df;
  padding: 36px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 24px;
}

.footer-logo {
  width: 170px;
  margin-bottom: 10px;
}

.footer h4 {
  margin: 0 0 10px;
  color: #fff;
  font-family: var(--font-heading);
}

.footer a {
  display: block;
  margin: 8px 0;
}

.social-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer a.social-icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.05);
  color: #e6f3f7;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.footer a.social-icon:hover {
  background: rgba(40, 184, 208, 0.25);
  border-color: rgba(40, 184, 208, 0.7);
  transform: translateY(-1px);
}

.footer a.social-icon svg {
  width: 16px;
  height: 16px;
  display: block;
  fill: currentColor;
}

@media (max-width: 1080px) {
  body.menu-open {
    overflow: hidden;
  }

  .menu {
    position: absolute;
    top: 100%;
    right: 4vw;
    width: min(420px, 92vw);
    background: #0b3138;
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 14px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    display: none;
  }

  .menu.open { display: flex; }
  .mobile-toggle { display: inline-flex; }
  .topbar { display: none; }

  .product-grid,
  .application-grid,
  .intro-grid,
  .service-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .contact-form label:nth-child(7),
  .contact-form .btn,
  .contact-form .fineprint {
    grid-column: auto;
  }

  .hero-content {
    padding-top: 110px;
    padding-bottom: 50px;
  }

  .hero p { font-size: 16px; }
}

@media (max-width: 420px) {
  .wrap {
    width: min(1200px, 94vw);
  }

  .nav {
    min-height: 64px;
    gap: 12px;
  }

  .brand img {
    height: 36px;
  }

  .menu {
    right: 3vw;
    width: min(360px, 94vw);
    padding: 12px;
    gap: 10px;
  }

  .menu a {
    padding: 4px 0;
  }

  .menu-cta {
    text-align: center;
  }

  .hero-content {
    padding-top: 96px;
    padding-bottom: 38px;
  }

  .hero h1 {
    font-size: clamp(30px, 9.2vw, 40px);
  }

  .hero p {
    margin-top: 14px;
    font-size: 15px;
    line-height: 1.55;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .section {
    padding: 62px 0;
  }

  .section h2 {
    font-size: clamp(24px, 7.2vw, 32px);
  }

  .product-card {
    min-height: 290px;
  }

  .application-card img {
    height: 170px;
  }

  .footer {
    padding: 30px 0;
  }

  .footer-logo {
    width: 150px;
  }
}