:root {
  --bg: #0a0a0f;
  --bg-soft: #11111a;
  --fg: #f4f4f8;
  --muted: #9aa0b4;
  --accent: #5eead4;
  --accent-2: #818cf8;
  --card: #181826;
  --border: #2a2a3a;
}

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

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  scroll-behavior: smooth;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 3rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-mark {
  color: var(--accent);
  font-size: 1.5rem;
}

.links a {
  margin-left: 2rem;
  color: var(--muted);
  font-weight: 500;
}

.links a:hover { color: var(--fg); }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.hero {
  text-align: center;
  padding: 8rem 1rem 6rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  font-size: 1.25rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 2.5rem;
}

.cta {
  display: inline-block;
  padding: 0.9rem 2rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: 8px;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.15s ease;
}

.cta:hover {
  background: var(--accent-2);
  color: var(--fg);
  transform: translateY(-2px);
}

section { padding: 4rem 0; }

h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  letter-spacing: -0.01em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.grid.single {
  max-width: 480px;
  margin: 0 auto;
  grid-template-columns: 1fr;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.icon { font-size: 2.5rem; margin-bottom: 1rem; }

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

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

.about p, .contact p {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--muted);
}

.contact p a { font-size: 1.25rem; font-weight: 600; }

footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

@media (max-width: 640px) {
  .nav { padding: 1rem 1.5rem; }
  .links a { margin-left: 1rem; font-size: 0.9rem; }
  .hero { padding: 4rem 1rem 3rem; }
}