:root {
  --brand: #2563eb;
  --brand600: #1e4fd6;
  --accent: #f97316;
  --ink: #0b1220;
  --ink700: #1f2937;
  --ink500: #4b5563;
  --sky: #f6faff;
  --sky2: #eaf3ff;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  --container: 1200px;
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
  background: var(--sky);
  color: var(--ink);
  font-family:
    Inter,
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
a {
  color: var(--brand);
  text-decoration: none;
}
header.site {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.nav {
  display: flex;
  gap: 24px;
  align-items: center;
  padding: 12px 0;
}
.nav .brand {
  display: flex;
  gap: 10px;
  align-items: center;
  font-family: Poppins;
  font-weight: 800;
}
.nav .brand img {
  height: 36px;
}
.nav ul {
  list-style: none;
  margin-left: auto;
  display: flex;
  gap: 16px;
  padding: 0;
}
.nav a {
  padding: 10px 12px;
  border-radius: 10px;
}
.nav a.active,
.nav a:hover {
  background: var(--sky2);
}
.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  align-items: center;
  padding: 48px 0;
}
.btn {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
}
.btn.primary {
  background: linear-gradient(135deg, var(--brand600), var(--accent));
  color: #fff;
}
.btn.ghost {
  border-color: var(--brand600);
  color: var(--brand600);
  background: transparent;
}
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.footer {
  padding: 32px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  color: var(--ink500);
}
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
}