:root {
  --ink: #0b1726;
  --muted: #5d6b7b;
  --line: #dce5ee;
  --blue: #0d72ce;
  --cyan: #22b8e8;
  --orange: #f59e0b;
  --navy: #061a2e;
  --paper: #f5f8fb;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(6, 26, 46, 0.92);
  color: var(--white);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 2px solid rgba(255, 255, 255, 0.28);
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-radius: 8px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.2;
}

.brand small {
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.site-nav a:hover {
  color: var(--white);
}

.nav-cta {
  padding: 9px 14px;
  background: var(--orange);
  color: var(--navy);
  border-radius: 6px;
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  color: var(--white);
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 26, 46, 0.94) 0%, rgba(6, 26, 46, 0.76) 42%, rgba(6, 26, 46, 0.18) 100%),
    linear-gradient(180deg, rgba(6, 26, 46, 0.16), rgba(6, 26, 46, 0.46));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 40px));
  padding: 132px 0 120px;
  margin-left: clamp(20px, 7vw, 96px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 28px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-copy {
  width: min(640px, 100%);
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(18px, 2.2vw, 24px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 800;
}

.button.primary {
  background: var(--orange);
  color: var(--navy);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.34);
  color: var(--white);
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 86px 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: -70px;
  padding: 0;
  position: relative;
  z-index: 2;
}

.stat {
  min-height: 148px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 46px rgba(11, 23, 38, 0.08);
}

.stat strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1;
}

.stat span {
  color: var(--muted);
  font-weight: 700;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 36px;
}

.section-heading h2,
.cooperation-card h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.18;
  letter-spacing: 0;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 36px;
  align-items: start;
}

.about-copy {
  padding: 34px 0;
  font-size: 20px;
}

.about-copy p {
  color: #253244;
}

.info-panel {
  padding: 32px;
  background: var(--navy);
  color: var(--white);
  border-radius: 8px;
}

.info-panel h3 {
  margin-bottom: 6px;
  font-size: 28px;
}

.info-panel p {
  color: rgba(255, 255, 255, 0.72);
}

.info-panel ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}

.info-panel li {
  min-height: 42px;
  display: grid;
  place-items: center;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 700;
  text-align: center;
}

.capability {
  width: 100%;
  max-width: none;
  padding-left: max(20px, calc((100vw - 1180px) / 2));
  padding-right: max(20px, calc((100vw - 1180px) / 2));
  background: var(--white);
}

.capability-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
}

.feature-card {
  position: relative;
  overflow: hidden;
  min-height: 350px;
  background: var(--navy);
  border-radius: 8px;
}

.feature-card.large {
  grid-row: span 2;
  min-height: 724px;
}

.feature-card img {
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: cover;
  opacity: 0.72;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 26, 46, 0.08), rgba(6, 26, 46, 0.86));
}

.feature-card div {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 28px;
  z-index: 1;
  color: var(--white);
}

.feature-card span,
.service-grid span {
  color: var(--cyan);
  font-weight: 900;
}

.feature-card h3 {
  margin: 8px 0;
  font-size: 30px;
}

.feature-card p {
  max-width: 620px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 17px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-grid article {
  min-height: 284px;
  padding: 28px;
  background: var(--white);
}

.service-grid h3 {
  margin: 22px 0 14px;
  font-size: 24px;
  line-height: 1.25;
}

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

.cooperation {
  width: 100%;
  max-width: none;
  padding-left: max(20px, calc((100vw - 1180px) / 2));
  padding-right: max(20px, calc((100vw - 1180px) / 2));
  background: var(--navy);
}

.cooperation-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: center;
  color: var(--white);
}

.cooperation-card p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
}

.contact-card {
  padding: 34px;
  background: var(--white);
  color: var(--ink);
  border-radius: 8px;
}

.contact-card span {
  color: var(--blue);
  font-weight: 800;
}

.contact-card h3 {
  margin: 8px 0 0;
  font-size: 44px;
}

.contact-card p {
  margin-bottom: 22px;
  color: var(--muted);
}

.contact-card a {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  padding: 0 18px;
  background: var(--orange);
  color: var(--navy);
  border-radius: 6px;
  font-size: 20px;
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(20px, 5vw, 72px);
  background: #03111f;
  color: rgba(255, 255, 255, 0.72);
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer strong {
  color: var(--white);
}

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

@media (max-width: 920px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    min-height: 640px;
  }

  .stats,
  .about-grid,
  .capability-layout,
  .service-grid,
  .cooperation-card {
    grid-template-columns: 1fr;
  }

  .stats {
    margin-top: 0;
    padding-top: 20px;
  }

  .feature-card.large {
    min-height: 420px;
  }

  .feature-card {
    min-height: 340px;
  }

  .cooperation-card {
    gap: 28px;
  }

  .contact-card {
    width: min(100%, 420px);
  }
}

@media (max-width: 560px) {
  .hero-content {
    padding-top: 88px;
    margin-left: 20px;
  }

  .site-nav {
    gap: 14px;
    font-size: 13px;
  }

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

  .section {
    padding: 62px 0;
  }

  .capability,
  .cooperation {
    padding-top: 62px;
    padding-bottom: 62px;
  }

  .site-footer {
    flex-direction: column;
  }
}