:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --ink: #122033;
  --muted: #637083;
  --line: #dce4ee;
  --blue: #1d5fd7;
  --green: #0d9488;
  --shadow: 0 22px 60px rgba(18, 32, 51, 0.08);
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(29, 95, 215, 0.12), transparent 24rem),
    radial-gradient(circle at 88% 18%, rgba(13, 148, 136, 0.12), transparent 22rem),
    var(--bg);
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 0 6vw;
  border-bottom: 1px solid rgba(220, 228, 238, 0.86);
  background: rgba(246, 248, 251, 0.88);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--green));
  font-weight: 800;
}

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

.brand strong {
  font-size: 18px;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

nav {
  display: flex;
  gap: 22px;
  color: #344257;
  font-size: 14px;
  font-weight: 650;
}

nav a {
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 40px;
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: 72px 0 56px;
}

.eyebrow,
.section-heading p {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: 0;
}

.lead {
  max-width: 720px;
  margin-bottom: 32px;
  color: #435168;
  font-size: 18px;
  line-height: 1.8;
}

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

.primary-link,
.secondary-link,
.mail-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 750;
  text-decoration: none;
}

.primary-link {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 14px 30px rgba(29, 95, 215, 0.22);
}

.secondary-link,
.mail-link {
  border: 1px solid var(--line);
  background: #fff;
}

.status-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}

.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(13, 148, 136, 0.12);
}

.status-panel strong {
  font-size: 20px;
}

.status-panel p {
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.section {
  padding: 48px 0;
}

.section-heading h2,
.contact-section h2 {
  margin-bottom: 0;
  font-size: 30px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.service-grid article {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 28px rgba(18, 32, 51, 0.04);
}

.service-grid span {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.service-grid h3 {
  margin: 18px 0 10px;
  font-size: 20px;
}

.service-grid p,
.contact-section p {
  color: var(--muted);
  line-height: 1.75;
}

.info-section {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 36px;
  align-items: start;
}

.info-list {
  display: grid;
  gap: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.info-list div {
  display: grid;
  grid-template-columns: 160px 1fr;
  border-bottom: 1px solid var(--line);
}

.info-list div:last-child {
  border-bottom: 0;
}

.info-list dt,
.info-list dd {
  margin: 0;
  padding: 18px 20px;
}

.info-list dt {
  color: #516176;
  background: #f9fbfd;
  font-weight: 750;
}

.info-list dd {
  color: #1f2d40;
}

.info-list a {
  color: var(--blue);
  font-weight: 750;
}

.contact-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin: 24px 0 56px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.contact-section p {
  max-width: 660px;
  margin-bottom: 0;
}

.mail-link {
  color: var(--blue);
  white-space: nowrap;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  justify-content: center;
  padding: 24px 20px;
  border-top: 1px solid var(--line);
  color: #5f6d80;
  background: #fff;
  font-size: 13px;
}

.site-footer a {
  color: var(--blue);
  text-decoration: none;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 48px;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .info-section,
  .contact-section {
    display: block;
  }

  .info-list {
    margin-top: 24px;
  }

  .mail-link {
    margin-top: 22px;
  }
}

@media (max-width: 620px) {
  main {
    width: min(100% - 28px, 1120px);
  }

  h1 {
    font-size: 34px;
  }

  .lead {
    font-size: 16px;
  }

  .service-grid,
  .info-list div {
    grid-template-columns: 1fr;
  }

  .info-list dt {
    padding-bottom: 8px;
  }

  .info-list dd {
    padding-top: 0;
  }
}