:root {
  --ink: #17211d;
  --muted: #62706a;
  --paper: #fffaf0;
  --surface: #ffffff;
  --line: rgba(25, 44, 36, 0.14);
  --green: #275b47;
  --green-deep: #143d31;
  --red: #a43f2f;
  --gold: #d9a441;
  --shadow: 0 18px 40px rgba(26, 43, 36, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 clamp(18px, 4vw, 56px);
  color: #fffdf7;
  background: rgba(16, 35, 29, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.48);
  background: var(--red);
  color: #fffdf7;
}

.nav-links {
  display: flex;
  gap: clamp(16px, 3vw, 34px);
  font-size: 14px;
}

.nav-links a {
  opacity: 0.92;
}

.hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  padding: 116px clamp(20px, 6vw, 84px) 92px;
  color: #fffdf7;
}

.hero-image,
.hero picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(14, 31, 26, 0.88), rgba(14, 31, 26, 0.48) 54%, rgba(14, 31, 26, 0.1)),
    linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(7, 18, 15, 0.42));
}

.hero-content {
  position: relative;
  max-width: 760px;
}

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

.hero h1 {
  margin: 0;
  font-size: clamp(58px, 10vw, 116px);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 640px;
  margin: 26px 0 0;
  color: rgba(255, 253, 247, 0.9);
  font-size: clamp(18px, 2.5vw, 26px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.66);
  font-weight: 800;
}

.primary-link {
  background: #fffdf7;
  color: var(--green-deep);
}

.secondary-link {
  color: #fffdf7;
}

.intro-band,
.service-band {
  background: var(--green-deep);
  color: #f7fff9;
}

.intro-grid {
  display: grid;
  max-width: 1180px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  margin: 0 auto;
  padding: 36px clamp(20px, 5vw, 56px);
}

.intro-grid p {
  margin: 0;
  color: rgba(247, 255, 249, 0.86);
  font-size: 17px;
  line-height: 1.75;
}

.section,
.service-band {
  padding: 76px clamp(20px, 5vw, 56px);
}

.section-heading {
  max-width: 1180px;
  margin: 0 auto 30px;
}

.section-heading h2,
.contact-copy h2 {
  margin: 0;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

.product-list,
.service-grid {
  display: grid;
  max-width: 1180px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin: 0 auto;
}

.product-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.product-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.product-body {
  padding: 22px;
}

.product-body h3,
.service-grid h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.product-body p,
.service-grid p,
.contact-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.service-band .section-heading h2,
.service-grid p {
  color: #f7fff9;
}

.service-grid > div {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.service-grid p {
  opacity: 0.82;
}

.contact-section {
  display: grid;
  max-width: 1180px;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.65fr);
  gap: 36px;
  align-items: start;
  margin: 0 auto;
}

.contact-copy {
  padding-top: 8px;
}

.contact-copy p {
  max-width: 620px;
  margin-top: 20px;
}

.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf7;
  box-shadow: var(--shadow);
}

.contact-panel dl {
  margin: 0;
}

.contact-panel div {
  padding: 22px;
  border-bottom: 1px solid var(--line);
}

.contact-panel div:last-child {
  border-bottom: 0;
}

.contact-panel dt {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

.contact-panel dd {
  margin: 0;
  font-weight: 800;
  line-height: 1.55;
}

.site-footer {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 clamp(20px, 5vw, 56px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #fffdf7;
  font-size: 14px;
}

.record-number {
  color: var(--green);
}

@media (max-width: 840px) {
  .site-header {
    position: absolute;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 82vh;
    padding-bottom: 64px;
  }

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

  .section,
  .service-band {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding-top: 20px;
    padding-bottom: 20px;
  }
}