:root {
  --bg: #0f1724;
  --card: #0b1220;
  --muted: #9aa4b2;
  --accent: #4f46e5;
  --accent-2: #06b6d4;
  --max-width: 1100px;
  --radius: 12px;
  --gap: 24px;
  --container-pad: 24px;
}

* {
  box-sizing: border-box
}

html,
body {
  height: 100%
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, #f7fbff, white);
  color: #0b1220;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-pad)
}

.site-header {
  padding: 18px 0
}

.brand-wrap {
  display: flex;
  flex-direction: column
}

.brand-wrap {
  display: flex;
  align-items: center;
  flex-direction: row;
  gap: 12px
}

.brand-logo {
  height: 40px;
  width: auto;
  margin-right: 8px;
}

.brand {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.2px
}

.sub {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem
}

.nav a {
  color: var(--muted);
  text-decoration: none
}

.hero {
  padding: 80px 0;
  text-align: center
}

.hero-title {
  font-size: 2rem;
  margin: 0 0 12px
}

.hero-desc {
  color: var(--muted);
  margin: 0 0 20px
}

.cta {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: white;
  text-decoration: none;
  font-weight: 600
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  padding: 40px 0
}

.card {
  background: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 6px 18px rgba(12, 22, 36, 0.06)
}

.card h3 {
  margin: 0 0 8px
}

.card p {
  margin: 0;
  color: var(--muted)
}

.contact {
  padding: 40px 0;
  border-top: 1px solid rgba(11, 18, 32, 0.04)
}

.site-footer {
  padding: 24px 0;
  color: var(--muted)
}

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

.beian {
  font-size: 0.85rem;
  color: var(--muted)
}

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

.beian a:hover {
  text-decoration: underline;
}

@media (max-width:900px) {
  .cards {
    grid-template-columns: 1fr
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start
  }
}