:root {
  --ink: #17201f;
  --muted: #65716f;
  --line: #dde5e2;
  --paper: #f7f9f7;
  --white: #ffffff;
  --teal: #117b78;
  --teal-dark: #0b5351;
  --amber: #d98c24;
  --leaf: #7a9c3f;
  --shadow: 0 18px 42px rgba(23, 32, 31, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(221, 229, 226, 0.8);
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: var(--white);
  font-weight: 800;
  background: linear-gradient(135deg, var(--teal), var(--leaf));
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 3vw, 34px);
  color: #35413f;
  font-size: 14px;
  font-weight: 650;
}

.header-action,
.primary-btn,
.secondary-btn,
.whatsapp-link,
.inquiry-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 760;
}

.header-action,
.primary-btn,
.inquiry-form button {
  color: var(--white);
  background: var(--teal);
}

.hero {
  position: relative;
  min-height: 690px;
  overflow: hidden;
  background: #20302e;
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 18, 17, 0.86) 0%, rgba(8, 18, 17, 0.66) 40%, rgba(8, 18, 17, 0.08) 100%),
    linear-gradient(0deg, rgba(8, 18, 17, 0.24), rgba(8, 18, 17, 0.05));
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 690px;
  max-width: 780px;
  padding: 96px clamp(22px, 5vw, 72px) 82px;
  color: var(--white);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.58;
}

.hero-actions,
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.secondary-btn {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.54);
  background: rgba(255, 255, 255, 0.09);
}

.trust-row {
  margin-top: 34px;
  color: rgba(255, 255, 255, 0.88);
}

.trust-row span {
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.category-strip,
.section,
.split-section,
.contact-section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.category-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  transform: translateY(-48px);
  box-shadow: var(--shadow);
  background: var(--line);
}

.category-strip article {
  min-height: 220px;
  padding: 26px;
  background: var(--white);
}

.icon {
  color: var(--teal);
  font-weight: 850;
}

.category-strip h2 {
  margin: 28px 0 10px;
  font-size: 22px;
}

.category-strip p,
.section-heading p,
.product-card p,
.split-section p,
.capability-list p,
.news-grid p,
.contact-section p,
footer p {
  color: var(--muted);
  line-height: 1.62;
}

.section {
  padding: 46px 0 86px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading h2,
.split-section h2,
.contact-section h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: 0;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.product-card,
.news-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.product-card {
  padding: 18px;
}

.product-visual {
  display: grid;
  place-items: center;
  min-height: 190px;
  border-radius: 8px;
  background: linear-gradient(145deg, #e8efec, #ffffff);
  position: relative;
  overflow: hidden;
}

.product-visual::before {
  content: "";
  width: 86px;
  height: 118px;
  border-radius: 10px;
  background: linear-gradient(145deg, #ffffff, #dfe8e5);
  box-shadow: inset 0 0 0 1px #c9d5d1, 0 20px 30px rgba(23, 32, 31, 0.14);
}

.product-visual::after {
  content: "";
  position: absolute;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid rgba(17, 123, 120, 0.55);
}

.panel::before {
  width: 132px;
  height: 92px;
}

.sensor::before,
.sensor::after {
  border-radius: 50%;
}

.sensor::before {
  width: 104px;
  height: 104px;
}

.dimmer::before {
  width: 100px;
  height: 100px;
  border-radius: 18px;
}

.product-tag {
  margin: 18px 0 8px;
  color: var(--amber);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.product-card h3,
.news-grid h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.82fr);
  gap: 54px;
  padding: 78px clamp(22px, 4vw, 44px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 32px;
}

.metrics span {
  padding: 18px;
  border-left: 4px solid var(--teal);
  background: var(--white);
}

.metrics strong {
  display: block;
  margin-bottom: 4px;
  font-size: 28px;
}

.capability-list {
  display: grid;
  gap: 14px;
}

.capability-list article {
  padding: 22px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(23, 32, 31, 0.07);
}

.news-section {
  padding-top: 90px;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.news-grid article {
  padding: 24px;
}

time {
  display: block;
  margin-bottom: 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1fr);
  gap: 48px;
  align-items: start;
  padding: 58px clamp(22px, 4vw, 44px);
  margin-bottom: 70px;
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, #17302e, #0f6b68 70%, #7a9c3f);
}

.contact-section p {
  color: rgba(255, 255, 255, 0.82);
}

.whatsapp-link {
  margin-top: 16px;
  color: var(--ink);
  background: var(--white);
}

.inquiry-form {
  display: grid;
  gap: 14px;
  padding: 22px;
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
}

.inquiry-form label {
  display: grid;
  gap: 7px;
  color: #34413f;
  font-size: 14px;
  font-weight: 750;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  border: 1px solid #cfdad6;
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--ink);
  font: inherit;
  background: #fbfcfb;
}

.inquiry-form button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4vw, 56px);
  border-top: 1px solid var(--line);
  background: var(--white);
}

footer p {
  margin: 0;
}

footer p:first-child {
  color: var(--ink);
  font-weight: 850;
}

@media (max-width: 960px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero,
  .hero-content {
    min-height: 620px;
  }

  .category-strip,
  .product-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split-section,
  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: auto;
  }

  .brand {
    min-width: 0;
  }

  .header-action {
    padding: 0 14px;
  }

  .hero,
  .hero-content {
    min-height: 650px;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(8, 18, 17, 0.9), rgba(8, 18, 17, 0.54));
  }

  h1 {
    font-size: 41px;
  }

  .category-strip,
  .product-grid,
  .news-grid,
  .metrics {
    grid-template-columns: 1fr;
  }

  .category-strip {
    transform: translateY(-32px);
  }

  footer {
    display: block;
  }

  footer p + p {
    margin-top: 8px;
  }
}