:root {
  color-scheme: light;
  --ink: #17201d;
  --muted: #65716d;
  --line: #dfe7e2;
  --paper: #f7faf8;
  --white: #ffffff;
  --green: #216753;
  --green-dark: #113d34;
  --gold: #b8873b;
  --blue: #255a80;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  background: rgba(247, 250, 248, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 260px;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 8px;
  background: var(--green);
  color: var(--white);
  font-weight: 800;
}

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

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

.nav {
  display: flex;
  gap: 26px;
  color: var(--muted);
  font-size: 15px;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: clamp(32px, 6vw, 84px);
  align-items: center;
  min-height: 72vh;
  padding: clamp(64px, 9vw, 120px) clamp(20px, 6vw, 88px);
  background:
    linear-gradient(110deg, rgba(17, 61, 52, 0.92), rgba(33, 103, 83, 0.72)),
    url("https://images.unsplash.com/photo-1556761175-b413da4baf72?auto=format&fit=crop&w=1800&q=80")
      center / cover;
  color: var(--white);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.06;
  letter-spacing: 0;
}

.lead {
  max-width: 720px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 19px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 6px;
  font-weight: 700;
}

.button.primary {
  color: var(--green-dark);
  background: var(--white);
  border-color: var(--white);
}

.button.ghost {
  color: var(--white);
}

.hero-panel {
  align-self: end;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(18px);
}

.hero-panel span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.hero-panel strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
}

.hero-panel ul {
  display: grid;
  gap: 10px;
  padding: 22px 0 0;
  margin: 22px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  list-style: none;
}

.hero-panel li::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--gold);
  vertical-align: 1px;
}

.section,
.band,
.contact {
  padding: clamp(56px, 8vw, 96px) clamp(20px, 6vw, 88px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 12px;
  font-size: 22px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-grid article {
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.service-grid p,
.company p,
.contact p,
.advantage-list p {
  color: var(--muted);
}

.band {
  background: var(--green-dark);
  color: var(--white);
}

.band .section-heading {
  margin-bottom: 36px;
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.advantage-list div {
  padding-top: 24px;
  border-top: 2px solid var(--gold);
}

.advantage-list strong {
  font-size: 22px;
}

.advantage-list p {
  color: rgba(255, 255, 255, 0.76);
}

.company {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: clamp(28px, 6vw, 80px);
}

.info-list {
  display: grid;
  gap: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--white);
}

.info-list div {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 18px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}

.info-list div:last-child {
  border-bottom: 0;
}

.info-list dt {
  color: var(--muted);
  font-weight: 700;
}

.info-list dd {
  margin: 0;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: clamp(28px, 6vw, 80px);
  background: var(--white);
}

.contact-box {
  display: grid;
  gap: 16px;
  padding: 26px;
  border-radius: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.contact-box p {
  margin: 0;
  color: var(--ink);
}

.contact-box span {
  display: inline-block;
  min-width: 72px;
  color: var(--muted);
  font-weight: 700;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 6vw, 88px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .site-header,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero,
  .company,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .service-grid,
  .advantage-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: 0;
  }

  .brand strong {
    font-size: 15px;
  }

  .nav {
    gap: 14px;
    font-size: 14px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .lead {
    font-size: 17px;
  }

  .info-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .contact-box span {
    display: block;
    margin-bottom: 4px;
  }
}