* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: #1f2937;
  background: #ffffff;
  line-height: 1.7;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid #e5e7eb;
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #0f3b73;
  color: #ffffff;
  font-weight: 700;
  font-size: 22px;
}

.brand-title {
  font-size: 20px;
  font-weight: 700;
  color: #111827;
}

.brand-subtitle {
  font-size: 13px;
  color: #6b7280;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 15px;
  color: #374151;
}

.nav a:hover {
  color: #0f3b73;
}

.hero {
  min-height: 560px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(120deg, rgba(15, 59, 115, 0.92), rgba(20, 83, 142, 0.78)),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.35), transparent 35%),
    linear-gradient(135deg, #12355f, #1d4f84);
  color: #ffffff;
}

.hero-content {
  padding: 90px 0;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #2f80ed;
  font-weight: 700;
}

.hero .eyebrow {
  color: #dbeafe;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.hero-text {
  max-width: 720px;
  margin: 24px 0 0;
  font-size: 18px;
  color: #e5edf7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  background: #ffffff;
  color: #0f3b73;
  font-weight: 700;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.38);
}

.section {
  padding: 82px 0;
}

.section-muted {
  background: #f8fafc;
}

.grid {
  display: grid;
  gap: 42px;
}

.two-columns {
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
}

h2 {
  margin: 0;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.25;
  color: #111827;
}

.card,
.service-card {
  border: 1px solid #e5e7eb;
  border-radius: 20px;
  background: #ffffff;
  padding: 28px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.06);
}

.card p {
  margin: 0 0 14px;
}

.card p:last-child {
  margin-bottom: 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 30px;
}

.service-card h3 {
  margin: 0 0 12px;
  color: #111827;
  font-size: 20px;
}

.service-card p {
  margin: 0;
  color: #4b5563;
}

.contact-card {
  background: #fdfdfd;
}

.site-footer {
  background: #0f172a;
  color: #d1d5db;
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: #ffffff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 760px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .nav {
    width: 100%;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .two-columns,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding: 74px 0;
  }

  .section {
    padding: 58px 0;
  }
}