:root {
  color-scheme: light;
  --bg: #f7f9f8;
  --surface: #ffffff;
  --surface-muted: #eef4f1;
  --text: #1f2d2a;
  --muted: #60736e;
  --line: #dbe5e1;
  --primary: #147d64;
  --primary-strong: #0f614e;
  --accent: #d97706;
  --shadow: 0 18px 45px rgba(26, 55, 47, 0.10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

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;
  min-height: 72px;
  padding: 12px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

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

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 22px;
}

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

.brand small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
}

.nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  padding: 8px 10px;
  border-radius: 6px;
}

.nav a:hover {
  background: var(--surface-muted);
  color: var(--primary-strong);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: clamp(24px, 5vw, 64px);
  min-height: calc(100vh - 72px);
  padding: clamp(42px, 7vw, 92px) clamp(20px, 5vw, 72px);
}

.hero-content {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(40px, 7vw, 76px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-weight: 700;
}

.button.primary {
  background: var(--primary);
  color: #fff;
}

.button.primary:hover {
  background: var(--primary-strong);
}

.button.secondary {
  background: var(--surface);
  border-color: var(--line);
  color: var(--primary-strong);
}

.hero-media {
  position: relative;
  min-height: 340px;
}

.hero-media img {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  filter: drop-shadow(var(--shadow));
}

.notice {
  margin: 0 clamp(20px, 5vw, 72px) 28px;
  padding: 16px 18px;
  border: 1px solid #f0d6a8;
  border-radius: 8px;
  background: #fff8eb;
  color: #5b4320;
}

.section {
  padding: clamp(40px, 6vw, 76px) clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 28px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 24px rgba(23, 52, 44, 0.05);
}

.service-card img {
  width: 82px;
  height: 82px;
  object-fit: contain;
  margin-bottom: 18px;
}

.service-card p,
.split-section p,
.contact-copy p,
.contact-box p {
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(24px, 5vw, 72px);
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.info-list div {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  min-height: 56px;
  border-bottom: 1px solid var(--line);
}

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

.info-list dt,
.info-list dd {
  margin: 0;
  padding: 14px 16px;
}

.info-list dt {
  color: var(--muted);
  background: var(--surface-muted);
}

.info-list dd {
  font-weight: 700;
  overflow-wrap: anywhere;
}

.info-list a {
  color: var(--primary-strong);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
}

.contact-box {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.contact-box p:last-child {
  margin-bottom: 0;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px clamp(20px, 5vw, 72px);
  background: #1e2d29;
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  flex-wrap: wrap;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: #ffffff;
}

.divider {
  margin: 0 10px;
  color: rgba(255, 255, 255, 0.45);
}

@media (max-width: 860px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

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

  .hero {
    min-height: auto;
    padding-top: 36px;
  }

  .hero-media {
    min-height: 220px;
  }

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

@media (max-width: 520px) {
  .brand {
    align-items: flex-start;
  }

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

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

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

  .info-list dd {
    padding-top: 10px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}