:root {
  --ink: #17201c;
  --muted: #5d6a64;
  --line: #d8ded9;
  --surface: #f7f8f5;
  --paper: #ffffff;
  --accent: #146c5b;
  --accent-dark: #0d473d;
  --warm: #b98048;
  --shadow: 0 18px 50px rgba(23, 32, 28, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(216, 222, 217, 0.8);
  backdrop-filter: blur(18px);
}

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

.brand-logo {
  width: 48px;
  height: 48px;
  border: 2px solid rgba(20, 108, 91, 0.18);
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.25;
}

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

nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 28px);
  color: var(--muted);
  font-size: 15px;
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: auto;
  padding: 118px clamp(18px, 6vw, 88px) 46px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(247, 248, 245, 0.98) 0%, rgba(227, 240, 234, 0.9) 55%, rgba(255, 255, 255, 0.96) 100%);
}

.hero-overlay {
  position: absolute;
  inset: auto 0 0;
  height: 26%;
  background: linear-gradient(0deg, var(--surface), rgba(247, 248, 245, 0));
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(132px, 180px);
  align-items: start;
  gap: clamp(28px, 6vw, 80px);
  max-width: 1120px;
}

.hero-wechat {
  display: grid;
  gap: 5px;
  justify-items: center;
  justify-self: end;
  margin-top: 18px;
  padding: 10px;
  border: 1px solid rgba(20, 108, 91, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 10px 26px rgba(23, 32, 28, 0.1);
}

.hero-wechat img {
  width: clamp(118px, 13vw, 168px);
  height: clamp(118px, 13vw, 168px);
  object-fit: cover;
}

.hero-wechat span {
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.2;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 660px;
  margin-bottom: 14px;
  font-size: clamp(34px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.lead {
  max-width: 610px;
  color: #33413b;
  font-size: clamp(16px, 2vw, 19px);
}

.zh {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.94em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.quick-contact {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 660px;
  margin-top: 24px;
}

.contact-tile {
  display: grid;
  gap: 3px;
  min-height: 72px;
  padding: 13px 15px;
  border: 1px solid rgba(20, 108, 91, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 8px 24px rgba(23, 32, 28, 0.07);
}

.contact-tile span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.contact-tile small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.contact-tile strong {
  color: var(--ink);
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.primary-contact {
  border-color: var(--accent);
  background: var(--accent);
}

.primary-contact span,
.primary-contact strong {
  color: #fff;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
}

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

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

.button.secondary {
  color: var(--accent-dark);
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(20, 108, 91, 0.24);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.trust-row span {
  padding: 7px 11px;
  border: 1px solid rgba(20, 108, 91, 0.22);
  border-radius: 8px;
  color: var(--accent-dark);
  background: rgba(255, 255, 255, 0.62);
  font-size: 14px;
  font-weight: 700;
}

.section {
  padding: 74px clamp(18px, 6vw, 88px);
}

.section-heading {
  max-width: 680px;
  margin-bottom: 28px;
}

.section-copy {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

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

.service-card {
  overflow: hidden;
  min-height: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 8px 28px rgba(23, 32, 28, 0.06);
}

.service-image {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #edf2ee;
}

.service-card h3,
.service-card p {
  padding-inline: 22px;
}

.service-card h3 {
  margin-top: 20px;
}

.service-card p {
  margin-bottom: 22px;
}

.service-card p {
  color: var(--muted);
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 28px;
  border-radius: 8px;
  color: var(--accent-dark);
  background: #e3f0ea;
  font-weight: 800;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(18px, 6vw, 88px);
  color: var(--muted);
  background: var(--paper);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--accent);
  font-weight: 800;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
  }

  nav {
    display: none;
  }

  .hero {
    background: linear-gradient(180deg, rgba(247, 248, 245, 0.98) 0%, rgba(227, 240, 234, 0.9) 100%);
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 680px) {
  .site-header {
    position: absolute;
    flex-wrap: wrap;
  }

  .brand {
    min-width: 0;
  }

  .hero {
    padding: 106px 16px 28px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .hero-wechat {
    justify-self: start;
    order: -1;
    margin-top: 0;
    padding: 6px;
  }

  .hero-wechat img {
    width: 72px;
    height: 72px;
  }

  .hero-wechat span {
    font-size: 11px;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  h1 {
    font-size: 28px;
    line-height: 1.12;
    margin-bottom: 10px;
  }

  .lead {
    font-size: 15px;
  }

  .quick-contact {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 18px;
  }

  .contact-tile {
    min-height: 54px;
    padding: 9px 12px;
  }

  .trust-row {
    gap: 6px;
    margin-top: 14px;
  }

  .trust-row span {
    padding: 5px 8px;
    font-size: 12px;
  }

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

  .service-card {
    min-height: 0;
  }

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