:root {
  --bg: #050816;
  --fg: #f9fafb;
  --accent: #38bdf8;
  --muted: #9ca3af;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    sans-serif;
  background: radial-gradient(circle at top, #0f172a, #020617 60%);
  color: var(--fg);
  min-height: 100vh;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 5vw;
  position: sticky;
  top: 0;
  backdrop-filter: blur(14px);
  background: rgba(15, 23, 42, 0.7);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  z-index: 10;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
}
.logo span {
  color: var(--accent);
}

.nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
}
.nav a:hover {
  color: var(--accent);
}

.hero {
  padding: 5rem 5vw 3rem;
  display: flex;
  justify-content: center;
}

.hero-content {
  max-width: 800px;
  text-align: left;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
}

.hero p {
  color: var(--muted);
  margin-bottom: 1.5rem;
  max-width: 30rem;
}

button#cta-button {
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #020617;
  margin-bottom: 0.75rem;
}

button#cta-button:hover {
  opacity: 0.9;
}

.section {
  padding: 3rem 5vw;
}

.section h2 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.card {
  border-radius: 1rem;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--muted);
  font-size: 0.9rem;
}

.hidden {
  display: none;
}