:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #eef4ff;
  --text: #172033;
  --muted: #667085;
  --primary: #2457d6;
  --primary-dark: #173b96;
  --border: #dce3ef;
  --shadow: 0 24px 60px rgba(25, 44, 85, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 16px 0;
}

.brand,
.nav-links,
.hero-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #54a3ff);
  color: #fff;
  letter-spacing: 1px;
}

.nav-links {
  gap: 28px;
  color: var(--muted);
  font-size: 15px;
}

.nav-links a:hover {
  color: var(--primary);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 48px;
  align-items: center;
  width: min(1120px, calc(100% - 40px));
  min-height: 640px;
  margin: 0 auto;
  padding: 80px 0;
}

.hero-content h1 {
  max-width: 760px;
  margin: 12px 0 20px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: -2px;
}

.eyebrow,
.section-label {
  margin: 0;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-text {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
}

.button.primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 26px rgba(36, 87, 214, 0.25);
}

.button.secondary {
  background: var(--surface);
  color: var(--primary-dark);
  border: 1px solid var(--border);
}

.hero-card {
  display: grid;
  gap: 10px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 28px;
  background: linear-gradient(145deg, #ffffff, var(--surface-soft));
  box-shadow: var(--shadow);
}

.hero-card span {
  color: var(--muted);
  font-size: 14px;
}

.hero-card strong {
  margin-bottom: 12px;
  font-size: 18px;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto 28px;
  padding: 58px;
  border: 1px solid var(--border);
  border-radius: 30px;
  background: var(--surface);
  box-shadow: 0 12px 35px rgba(25, 44, 85, 0.06);
}

.section h2 {
  margin: 8px 0 22px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}

.split {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 40px;
}

.split p:last-child,
.contact p,
.statement p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.service-card {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: #fbfcff;
}

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

.service-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

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

.statement p {
  color: #fff;
  text-align: center;
}

.contact {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 36px;
  margin-bottom: 64px;
}

address {
  display: grid;
  gap: 14px;
  margin: 0;
  color: var(--text);
  font-style: normal;
}

address span {
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--surface-soft);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 22px;
  padding: 28px 20px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: #fff;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer a:hover {
  color: var(--primary);
}

@media (max-width: 900px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 14px;
  }

  .hero,
  .split,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: 52px 0;
  }

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

  .section {
    padding: 36px;
  }
}

@media (max-width: 560px) {
  .nav,
  .hero,
  .section {
    width: min(100% - 28px, 1120px);
  }

  .brand {
    align-items: flex-start;
  }

  .nav-links {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 4px;
  }

  .hero-content h1 {
    letter-spacing: -1px;
  }

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

  .section,
  .hero-card {
    padding: 26px;
    border-radius: 22px;
  }
}