:root {
  color-scheme: light dark;
  --bg: #0b1020;
  --surface: #121a2e;
  --text: #eef2ff;
  --muted: #9aa6c3;
  --accent: #5b8cff;
  --accent-hover: #7aa1ff;
  --border: rgba(255, 255, 255, 0.08);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #172038 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
}

.wrap {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero {
  padding: 5rem 0 3rem;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  line-height: 1.1;
  margin: 0.75rem 0 1rem;
  max-width: 14ch;
}

.lede {
  color: var(--muted);
  font-size: 1.125rem;
  max-width: 52ch;
  margin: 0 0 2rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary,
.btn-ghost {
  border-color: var(--border);
  color: var(--text);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  padding: 1rem 0 4rem;
}

.features article {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
}

.features h2 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.925rem;
}

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

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fc;
    --surface: #ffffff;
    --text: #101828;
    --muted: #475467;
    --border: rgba(16, 24, 40, 0.08);
  }

  body {
    background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  }

  .features article {
    background: #fff;
  }
}