:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --brand: #0f766e;
  --brand-weak: #dff7f3;
  --line: #dbe3ee;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  text-decoration: none;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

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

.hero {
  background: linear-gradient(180deg, #effcf9 0%, #f7f9fc 100%);
  padding: 56px 0 54px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 36px;
  align-items: center;
}

.badge {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--brand);
  background: var(--brand-weak);
  border-radius: 999px;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 4.4vw, 48px);
  line-height: 1.2;
}

.lead {
  margin: 16px 0 24px;
  font-size: 18px;
  color: var(--muted);
}

.lead span {
  color: var(--brand);
  font-weight: 700;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
}

.btn-primary {
  background: var(--brand);
  color: #ffffff;
}

.btn-ghost {
  background: #ffffff;
  color: var(--brand);
  border-color: var(--brand);
}

.btn:hover {
  transform: translateY(-1px);
  transition: all 0.2s ease;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 6px 0 16px;
}

.hero-stats p {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-stats strong {
  color: var(--brand);
  font-size: 16px;
}

.hero-stats span {
  color: var(--muted);
  font-size: 13px;
}

.trust-points {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.hero-image-wrap {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #ffffff;
}

.hero-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.section {
  padding: 62px 0;
}

.section-muted {
  background: #f2f6fb;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-entry {
  padding-top: 40px;
  padding-bottom: 22px;
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.entry-tags a {
  text-decoration: none;
  font-size: 14px;
  color: var(--brand);
  border: 1px solid #b9ddd9;
  background: #f5fffd;
  border-radius: 999px;
  padding: 7px 12px;
}

.entry-tags a:hover {
  border-color: var(--brand);
}

h2 {
  margin: 0;
  font-size: clamp(26px, 3.3vw, 34px);
}

.section-subtitle {
  margin: 10px 0 24px;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
}

.card:hover,
.client-group:hover,
.process-item:hover,
.coverage-item:hover,
.advantage-item:hover,
.faq-item:hover {
  border-color: #c8d7e8;
  transition: border-color 0.2s ease;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 19px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.client-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.client-group {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.client-group h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.client-list {
  margin: 0;
  padding-left: 18px;
}

.client-list li {
  margin-bottom: 6px;
}

.client-more {
  margin-top: 16px;
  color: var(--muted);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.process-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.process-item span {
  display: inline-flex;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--brand);
  background: var(--brand-weak);
  margin-bottom: 10px;
}

.process-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.process-item p {
  margin: 0;
  color: var(--muted);
}

.coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.coverage-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.coverage-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.coverage-item p {
  margin: 0;
  color: var(--muted);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.gallery img {
  border-radius: 12px;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.advantage-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.advantage-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.advantage-item p {
  margin: 0;
  color: var(--muted);
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.faq-item h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.contact {
  background: #ffffff;
  border-top: 1px solid var(--line);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 28px;
  align-items: start;
}

.contact-list {
  margin: 14px 0 18px;
  padding-left: 0;
  list-style: none;
}

.contact-list li {
  margin-bottom: 8px;
}

.contact-list a {
  color: var(--brand);
  text-decoration: none;
}

.map-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 18px;
}

.qr-wrap {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  text-align: center;
}

.qr-wrap img {
  width: min(280px, 100%);
  margin: 0 auto 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
}

.qr-wrap p {
  margin: 0;
  color: var(--muted);
}

.footer {
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.footer-inner {
  padding: 18px 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.footer-inner p {
  margin: 6px 0;
}

.footer-links-title {
  margin-top: 10px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 6px 0 8px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
}

.footer-links a {
  color: var(--brand);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-inner a {
  color: var(--brand);
  text-decoration: none;
}

@media (max-width: 980px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .process-grid,
  .coverage-grid,
  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .client-groups {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 680px) {
  .card-grid,
  .gallery,
  .client-groups,
  .process-grid,
  .hero-stats,
  .advantage-grid,
  .coverage-grid {
    grid-template-columns: 1fr;
  }

  .nav-inner {
    flex-direction: column;
    justify-content: center;
    padding: 10px 0;
  }

  .nav-links {
    justify-content: center;
    gap: 12px;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .section-entry {
    padding-top: 34px;
    padding-bottom: 18px;
  }

  .hero {
    padding-top: 56px;
  }

  .section {
    padding: 46px 0;
  }
}