:root {
  --ink: #142531;
  --muted: #667785;
  --line: #dbe8ef;
  --paper: #f6fbfe;
  --soft: #eaf5fb;
  --brand: #0b76a6;
  --brand-dark: #064967;
  --blue: #0f8fc8;
  --gold: #bd8a32;
  --white: #ffffff;
  --shadow: 0 20px 55px rgba(9, 55, 82, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
  padding: 0 6vw;
  background: rgba(248, 250, 247, .94);
  border-bottom: 1px solid rgba(223, 232, 228, .88);
  backdrop-filter: blur(14px);
}
.brand img { width: 156px; height: auto; }
.nav { display: flex; gap: 26px; font-size: 15px; color: #33413d; }
.nav a { padding: 8px 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.active { color: var(--brand); border-color: var(--brand); }
.header-actions { display: flex; align-items: center; gap: 12px; white-space: nowrap; }
.phone { font-weight: 700; font-size: 14px; }
.lang {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--brand-dark);
  height: 36px;
  min-width: 48px;
  border-radius: 6px;
  font-weight: 700;
}

.hero {
  min-height: calc(100vh - 76px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: 54px;
  padding: 72px 6vw 58px;
  background:
    linear-gradient(120deg, rgba(11,118,166,.12), rgba(15,143,200,.08) 48%, rgba(189,138,50,.08)),
    var(--paper);
}
.hero-copy { max-width: 760px; }
.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 {
  margin: 0;
  font-size: clamp(44px, 6vw, 82px);
  line-height: 1.05;
  letter-spacing: 0;
}
.lead {
  max-width: 720px;
  margin: 26px 0 0;
  color: #53615d;
  font-size: 20px;
}
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 800;
}
.btn.primary { background: var(--brand); color: white; }
.btn.secondary { background: white; border: 1px solid var(--line); color: var(--brand-dark); }
.hero-media {
  position: relative;
  min-height: 430px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--soft);
}
.hero-media img { width: 100%; height: 100%; min-height: 430px; object-fit: cover; }
.metric {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 24px;
  padding: 18px 20px;
  color: white;
  background: rgba(6, 73, 103, .88);
  border-radius: 8px;
}
.metric strong, .metric span { display: block; }
.metric span { opacity: .86; font-size: 14px; margin-top: 4px; }

.section { padding: 84px 6vw; }
.section-action { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.page-hero {
  padding: 86px 6vw 72px;
  background:
    linear-gradient(120deg, rgba(11,118,166,.14), rgba(15,143,200,.09) 55%, rgba(189,138,50,.07)),
    var(--paper);
  border-bottom: 1px solid var(--line);
}
.page-hero h1 {
  max-width: 980px;
  font-size: clamp(42px, 5vw, 70px);
}
.page-hero .lead { max-width: 860px; }
.split {
  display: grid;
  grid-template-columns: minmax(300px, .88fr) minmax(320px, 1.12fr);
  gap: 44px;
  align-items: start;
}
.panel {
  padding: 28px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.panel h2, .panel h3 { margin-top: 0; }
.panel p, .panel li { color: var(--muted); }
.stack { display: grid; gap: 18px; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.feature-card {
  min-height: 190px;
  padding: 24px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.feature-card h3 { margin: 0 0 10px; color: var(--brand-dark); }
.feature-card p { margin: 0; color: var(--muted); }
.detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.detail-list li {
  padding: 18px;
  background: rgba(255,255,255,.78);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.detail-list strong { display: block; color: var(--brand-dark); margin-bottom: 6px; }
.detail-list span { color: var(--muted); }
.table-like {
  display: grid;
  gap: 10px;
}
.table-row {
  display: grid;
  grid-template-columns: minmax(150px, .6fr) minmax(260px, 1.4fr);
  gap: 14px;
  padding: 18px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.table-row strong { color: var(--brand-dark); }
.table-row span { color: var(--muted); }
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 42px 6vw;
  color: white;
  background: var(--brand-dark);
}
.cta-band h2 { margin: 0; font-size: clamp(28px, 3vw, 42px); line-height: 1.15; }
.cta-band p { margin: 8px 0 0; color: rgba(255,255,255,.76); }
.cta-band .btn.secondary { border-color: rgba(255,255,255,.34); background: white; }
.intro {
  display: grid;
  grid-template-columns: minmax(260px, .8fr) minmax(280px, 1fr);
  gap: 54px;
  background: white;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.intro h2, .section-head h2, .resource-copy h2, .contact h2 {
  margin: 0;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.15;
  letter-spacing: 0;
}
.intro p:last-child { margin: 32px 0 0; color: var(--muted); font-size: 18px; }
.section-head { max-width: 780px; margin-bottom: 34px; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.service-card {
  min-height: 260px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(11,118,166,.45);
  box-shadow: var(--shadow);
}
.service-card span { color: var(--gold); font-weight: 800; }
.service-card h3 { margin: 28px 0 12px; font-size: 22px; line-height: 1.25; }
.service-card p { margin: 0; color: var(--muted); }

.services-hero {
  padding-bottom: 86px;
}
.service-quick-nav {
  position: sticky;
  top: 76px;
  z-index: 15;
  display: flex;
  gap: 10px;
  padding: 14px 6vw;
  background: rgba(246, 251, 254, .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  overflow-x: auto;
  scrollbar-width: none;
}
.service-quick-nav::-webkit-scrollbar { display: none; }
.service-quick-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 16px;
  color: var(--brand-dark);
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
  box-shadow: 0 8px 22px rgba(9, 55, 82, .06);
}
.service-quick-nav a:hover {
  color: white;
  background: var(--brand);
  border-color: var(--brand);
}
.service-catalog-section {
  background:
    linear-gradient(180deg, rgba(234,245,251,.88), rgba(246,251,254,1) 28%, rgba(234,245,251,.64));
}
.catalog-block { display: grid; gap: 22px; }
.catalog-category {
  display: grid;
  grid-template-columns: minmax(220px, .34fr) minmax(0, 1fr);
  gap: 22px;
  padding: 24px;
  background: rgba(255,255,255,.86);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.catalog-heading {
  align-self: stretch;
  padding: 4px 10px 4px 0;
  border-right: 1px solid var(--line);
}
.category-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 30px;
  margin-bottom: 18px;
  color: white;
  background: var(--brand);
  border-radius: 6px;
  font-weight: 900;
  line-height: 1;
}
.catalog-category h2 { margin: 0 0 10px; font-size: 27px; line-height: 1.2; }
.catalog-heading p { margin: 0; color: var(--muted); }
.catalog-heading small {
  display: inline-flex;
  margin-top: 18px;
  padding: 7px 10px;
  color: var(--brand-dark);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-weight: 800;
}
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 12px;
}
.catalog-card {
  display: grid;
  gap: 7px;
  min-height: 112px;
  padding: 15px 15px 14px;
  background: linear-gradient(180deg, #ffffff, #f7fbfd);
  border: 1px solid var(--line);
  border-radius: 8px;
  border-top: 3px solid rgba(11,118,166,.22);
  transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
}
.catalog-card:hover {
  transform: translateY(-3px);
  border-color: rgba(11,118,166,.42);
  background: white;
  box-shadow: 0 14px 30px rgba(9, 55, 82, .1);
}
.catalog-card strong { color: var(--brand-dark); line-height: 1.22; font-size: 17px; }
.catalog-card span { color: var(--muted); font-size: 14px; }
.detail-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .42fr);
  gap: 28px;
  align-items: end;
}
.detail-meta {
  padding: 22px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.detail-meta strong { display: block; color: var(--brand-dark); }
.detail-meta span { display: block; color: var(--muted); margin-top: 6px; }

.muted { background: var(--soft); }
.system-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.system-list article {
  min-height: 174px;
  padding: 24px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(223,232,228,.9);
  border-radius: 8px;
}
.system-list h3 { margin: 0 0 10px; font-size: 20px; color: var(--brand-dark); }
.system-list p { margin: 0; color: var(--muted); }

.process { background: #ffffff; }
.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: step;
}
.timeline li {
  position: relative;
  min-height: 220px;
  padding: 64px 20px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.timeline li::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 20px;
  left: 20px;
  color: var(--gold);
  font-weight: 900;
}
.timeline strong { display: block; font-size: 20px; }
.timeline p { margin: 10px 0 0; color: var(--muted); }

.resources {
  display: grid;
  grid-template-columns: minmax(260px, .85fr) minmax(300px, 1.15fr);
  gap: 34px;
  align-items: start;
  background: var(--brand-dark);
  color: white;
}
.resource-copy p:last-child { color: rgba(255,255,255,.72); font-size: 18px; }
.checklist {
  display: grid;
  gap: 12px;
}
.checklist label {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 18px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 8px;
}
.checklist input { margin-top: 6px; accent-color: var(--gold); }

.contact {
  display: grid;
  grid-template-columns: minmax(300px, .95fr) minmax(320px, 1.05fr);
  gap: 28px;
  background: linear-gradient(180deg, #f6fbfe, #eaf5fb);
}
.contact-card, .lead-form {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.contact-card { display: grid; grid-template-columns: 1fr 180px; gap: 18px; padding: 28px; }
.contact-card img { width: 180px; height: 220px; object-fit: cover; border-radius: 8px; }
.contact-phone { color: var(--brand); font-size: 26px; font-weight: 900; }
.lead-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 28px;
}
.lead-form label { display: grid; gap: 8px; font-weight: 800; }
.lead-form .wide { grid-column: 1 / -1; }
.lead-form input, .lead-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px 14px;
  font: inherit;
  color: var(--ink);
  background: #fbfcfb;
}
.lead-form button {
  grid-column: 1 / -1;
  min-height: 48px;
  border: 0;
  border-radius: 6px;
  background: var(--brand);
  color: white;
  font-size: 17px;
  font-weight: 900;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 6vw;
  color: rgba(255,255,255,.76);
  background: #052f45;
}
.footer p { margin: 0; }

@media (max-width: 1100px) {
  .site-header { flex-wrap: wrap; gap: 12px 20px; }
  .nav {
    order: 3;
    width: 100%;
    gap: 18px;
    overflow-x: auto;
    padding: 4px 0 10px;
    scrollbar-width: none;
  }
  .nav::-webkit-scrollbar { display: none; }
  .hero { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-category { grid-template-columns: 1fr; }
  .catalog-heading {
    padding: 0 0 18px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .system-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .site-header { height: auto; padding: 14px 18px; align-items: flex-start; }
  .service-quick-nav { top: 0; padding: 12px 20px; }
  .brand img { width: 128px; }
  .header-actions { flex-direction: column; align-items: flex-end; gap: 8px; }
  .nav { font-size: 13px; gap: 14px; }
  .phone { font-size: 12px; }
  .hero, .section, .page-hero { padding-left: 20px; padding-right: 20px; }
  .hero { padding-top: 48px; gap: 28px; }
  h1 { font-size: 42px; }
  .lead { font-size: 17px; }
  .hero-media, .hero-media img { min-height: 300px; }
  .intro, .resources, .contact-card, .lead-form { grid-template-columns: 1fr; }
  .service-grid, .catalog-grid, .system-list, .timeline, .feature-grid, .detail-list, .detail-hero-grid { grid-template-columns: 1fr; }
  .catalog-category { padding: 18px; }
  .catalog-card { min-height: 96px; }
  .table-row { grid-template-columns: 1fr; }
  .cta-band { align-items: flex-start; flex-direction: column; padding-left: 20px; padding-right: 20px; }
  .contact-card img { width: 100%; height: 210px; }
  .footer { flex-direction: column; }
}