:root {
  --ink: #111827;
  --muted: #4b5563;
  --soft: #f5f7fb;
  --line: #d9e1ee;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #eaf2ff;
  --surface: #ffffff;
  --shadow: 0 18px 45px rgba(17, 24, 39, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.7;
}

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

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

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.narrow {
  max-width: 920px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  min-height: 66px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 22px;
}

.brand {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14px;
}

.main-nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
}

.phone-link {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 16px;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
}

.section {
  padding: 78px 0;
}

.section-soft {
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.07), rgba(15, 23, 42, 0.02)),
    var(--soft);
}

.hero {
  min-height: 390px;
  display: grid;
  align-items: center;
}

.hero-inner,
.page-hero .container,
.section-head,
.center-cta {
  text-align: center;
}

.eyebrow {
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  margin-bottom: 12px;
}

h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: 0;
  margin-bottom: 22px;
}

h2 {
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1.22;
  margin-bottom: 18px;
}

h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.hero-subtitle,
.page-hero p,
.section-head p,
.center-cta p {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 28px;
  border: 0;
  border-radius: 7px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.btn.primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.22);
}

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

.btn.ghost {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--line);
}

.btn.full {
  width: 100%;
}

.service-grid,
.advantage-grid,
.scope-grid {
  display: grid;
  gap: 22px;
}

.service-grid {
  grid-template-columns: repeat(3, 1fr);
}

.service-card,
.advantage-card,
.certificate-card,
.card-form,
.trust-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(17, 24, 39, 0.04);
}

.service-card {
  min-height: 172px;
  padding: 28px;
}

.service-card p,
.advantage-card p,
.content-block p,
.certificate-card p,
.service-detail p,
.contact-info p,
.site-footer p {
  color: var(--muted);
}

.service-icon {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 900;
}

.trust-card {
  display: grid;
  grid-template-columns: 1.2fr auto 1.4fr;
  gap: 28px;
  align-items: center;
  padding: 34px;
}

.license-box {
  min-width: 220px;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--primary-soft);
  text-align: center;
}

.license-box span,
.license-box strong {
  display: block;
}

.license-box strong {
  color: var(--primary);
  font-size: 24px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.metrics div {
  padding: 18px;
  border-radius: 8px;
  background: #f8fbff;
  text-align: center;
}

.metrics strong,
.metrics span {
  display: block;
}

.metrics strong {
  color: var(--primary);
  font-size: 20px;
}

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

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

.advantage-card {
  padding: 24px;
}

.contact-panel {
  max-width: 650px;
}

.consult-form {
  display: grid;
  gap: 14px;
}

.consult-form label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.consult-form input,
.consult-form textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 14px 16px;
  font: inherit;
  color: var(--ink);
  background: #fff;
  outline: none;
}

.consult-form input:focus,
.consult-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-tip {
  min-height: 24px;
  margin: 0;
  color: var(--primary);
  text-align: center;
  font-weight: 700;
}

.phone-cta {
  text-align: center;
  color: var(--muted);
  margin: 22px 0 0;
}

.phone-cta a {
  color: var(--primary);
  font-size: 22px;
  font-weight: 900;
}

.page-hero {
  padding: 78px 0;
}

.page-hero h1 {
  font-size: clamp(34px, 5vw, 50px);
}

.content-block {
  max-width: 860px;
}

.certificate-card {
  max-width: 560px;
  margin: 0 auto;
  padding: 38px;
  text-align: center;
}

.certificate-card strong {
  display: block;
  color: var(--primary);
  font-size: 26px;
  margin-bottom: 8px;
}

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

.scope-grid span {
  display: block;
  padding: 18px 22px;
  border-radius: 7px;
  background: #f7faff;
  color: var(--ink);
  border-left: 4px solid var(--primary);
}

.service-detail-grid {
  display: grid;
  gap: 52px;
}

.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  align-items: center;
}

.service-detail.reverse .visual-tile {
  order: 2;
}

.visual-tile {
  min-height: 310px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(17, 24, 39, 0.03)),
    #f7faff;
}

.visual-tile span {
  color: rgba(37, 99, 235, 0.28);
  font-size: 72px;
  font-weight: 900;
}

.service-detail ul {
  padding-left: 20px;
  color: var(--muted);
}

.service-detail li::marker {
  color: var(--primary);
}

.text-link {
  color: var(--primary);
  font-weight: 900;
}

.center-cta .btn {
  margin-top: 16px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
  gap: 54px;
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 24px;
}

.info-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
}

.info-item h2 {
  font-size: 18px;
  margin-bottom: 4px;
}

.info-item a,
.info-item strong {
  color: var(--primary);
  font-weight: 900;
}

.card-form {
  padding: 30px;
}

.map-card {
  height: 360px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.map-card iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.map-address {
  margin-top: 18px;
  text-align: center;
  color: var(--muted);
}

.site-footer {
  padding: 56px 0 26px;
  background: #f8fafc;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 1fr;
  gap: 64px;
}

.site-footer h2 {
  font-size: 16px;
  margin-bottom: 16px;
}

.site-footer a {
  display: block;
  color: var(--muted);
  margin-bottom: 8px;
}

.footer-line {
  margin-bottom: 6px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.footer-bottom .beian-link {
  display: inline;
  margin: 0;
  color: var(--muted);
}

.footer-bottom .beian-link:hover {
  color: var(--primary);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.7s ease forwards;
}

.reveal:nth-child(2) {
  animation-delay: 0.06s;
}

.reveal:nth-child(3) {
  animation-delay: 0.12s;
}

.reveal:nth-child(4) {
  animation-delay: 0.18s;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .nav-wrap {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 14px 0;
  }

  .phone-link {
    justify-self: center;
  }

  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
  }

  .service-grid,
  .trust-card,
  .service-detail,
  .contact-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .service-detail.reverse .visual-tile {
    order: 0;
  }

  .metrics,
  .advantage-grid,
  .scope-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .section,
  .page-hero {
    padding: 54px 0;
  }

  .hero {
    min-height: 430px;
  }

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

  .btn {
    width: 100%;
  }

  h1 {
    font-size: 38px;
  }

  .service-card,
  .trust-card,
  .certificate-card,
  .card-form {
    padding: 22px;
  }

  .visual-tile {
    min-height: 220px;
  }
}