:root {
  color-scheme: dark;
  --bg: #080b14;
  --bg-soft: #11172a;
  --card: #151d33;
  --line: #2a3457;
  --text: #f7f8ff;
  --muted: #b2bbd8;
  --brand: #6ea8fe;
  --brand-2: #8ef0d8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background: radial-gradient(circle at 0% 0%, #18213f 0%, var(--bg) 45%);
  color: var(--text);
}

a {
  color: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(8, 11, 20, 0.8);
  border-bottom: 1px solid rgba(110, 168, 254, 0.18);
}

.nav {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

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

.logo {
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.hero {
  padding: 7rem 0 3.5rem;
}

.eyebrow {
  margin: 0;
  color: var(--brand-2);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0.65rem 0 1rem;
  max-width: 17ch;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.08;
}

.hero-copy {
  color: var(--muted);
  font-size: 1.06rem;
  max-width: 66ch;
  line-height: 1.72;
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, var(--brand), #4f7cf7);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}

.btn-sm {
  padding: 0.45rem 0.72rem;
}

.section {
  padding: 2rem 0 4rem;
}

h2 {
  margin-top: 0;
  font-size: 1.7rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  background: linear-gradient(180deg, rgba(22, 31, 56, 0.85), var(--card));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.card h3 {
  margin: 0 0 0.7rem;
}

.card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.6;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.1rem 0 1.8rem;
  color: var(--muted);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}