:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #eef4fb;
  --text: #172033;
  --muted: #5d6b82;
  --line: #dce5ef;
  --blue: #1f66d1;
  --blue-dark: #164b9b;
  --cyan: #20a7c9;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
p { line-height: 1.75; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
}
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  font-weight: 900;
}
nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-weight: 650;
}
nav a:hover { color: var(--blue); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr);
  gap: 44px;
  align-items: center;
  padding: 82px clamp(20px, 5vw, 72px);
}
.corporate-hero {
  background:
    linear-gradient(135deg, rgba(31, 102, 209, .08), rgba(32, 167, 201, .08)),
    var(--surface);
  border-bottom: 1px solid var(--line);
}
.eyebrow {
  color: var(--blue);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 800;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 780px;
  font-size: clamp(38px, 5.2vw, 68px);
  line-height: 1.08;
  margin-bottom: 22px;
  letter-spacing: 0;
}
h2 {
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.2;
  margin-bottom: 14px;
}
h3 { font-size: 20px; margin-bottom: 10px; }
.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 19px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.primary-action, .secondary-action {
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 800;
}
.primary-action { background: var(--blue); color: #fff; }
.primary-action:hover { background: var(--blue-dark); }
.secondary-action { border: 1px solid var(--line); background: #fff; color: var(--blue); }

.company-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px;
  box-shadow: 0 18px 42px rgba(23, 32, 51, .08);
}
.company-card h2 { font-size: 24px; }
.company-card p {
  margin: 0;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.company-card p:last-child { border-bottom: 0; }
.company-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 5px;
}
.company-card strong { font-size: 15px; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 28px clamp(20px, 5vw, 72px) 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
.stats div {
  background: var(--surface);
  padding: 24px;
}
.stats strong {
  display: block;
  color: var(--text);
  font-size: 22px;
  margin-bottom: 6px;
}
.stats span { color: var(--muted); }

.section {
  padding: 82px clamp(20px, 5vw, 72px);
}
.section-head {
  max-width: 800px;
  margin-bottom: 28px;
}
.section-head p, .body-text {
  color: var(--muted);
  font-size: 17px;
}
.service-grid, .solution-grid, .content-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.solution-grid, .content-grid { grid-template-columns: repeat(3, 1fr); }
.service-grid article,
.solution-grid div,
.content-grid article,
.content-card,
.capability-list {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
}
.service-grid p,
.solution-grid p,
.content-grid p,
.content-card p,
.capability-list p {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 36px;
  align-items: start;
  background: var(--surface-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.capability-list {
  display: grid;
  gap: 12px;
}
.capability-list p {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 14px;
}
.capability-list span {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 8px;
  background: #e7f0ff;
  color: var(--blue);
  font-weight: 900;
}

.page-main { padding: 64px clamp(20px, 5vw, 72px) 78px; }
.page-hero {
  max-width: 920px;
  margin-bottom: 28px;
}
.page-hero h1 { font-size: clamp(34px, 4vw, 56px); }
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.content-card a { color: var(--blue); font-weight: 800; }
.policy h2 { font-size: 22px; margin-top: 26px; }
.policy h2:first-child { margin-top: 0; }
.muted-text { color: #7b8798 !important; }

footer {
  margin: 0 clamp(20px, 5vw, 72px) 42px;
  padding: 30px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  background: #10223d;
  color: #fff;
  border-radius: 10px;
}
footer p, .contact-card p, .contact-card span { color: #c8d5e6; }
.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.footer-links a, .contact-card a {
  display: inline-block;
  color: #ffffff;
  font-weight: 750;
}
.contact-card {
  min-width: 300px;
  border-left: 1px solid rgba(255,255,255,.18);
  padding-left: 24px;
}
.contact-card a { display: block; margin-bottom: 8px; }

@media (max-width: 980px) {
  .site-header { height: auto; padding: 16px 20px; align-items: flex-start; gap: 12px; flex-direction: column; }
  nav { gap: 14px; flex-wrap: wrap; }
  .hero, .split, .contact-layout { grid-template-columns: 1fr; }
  .service-grid, .solution-grid, .content-grid, .stats { grid-template-columns: 1fr; }
  footer { flex-direction: column; }
  .contact-card { border-left: 0; padding-left: 0; }
}