:root {
  --bg: #050505;
  --surface: #111111;
  --primary: #007AFF;
  --text: #ffffff;
  --text-dim: #a1a1a1;
  --glass: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 5%;
}

nav ul {
  display: flex;
  justify-content: center;
  align-items: center;
  list-style: none;
  gap: 2rem;
}

nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: 0.3s;
}

nav a:hover { color: var(--primary); }

section { padding: 100px 10%; max-width: 1400px; margin: 0 auto; }

.hero {
  padding: 160px 10% 100px;
  text-align: center;
  background: radial-gradient(circle at top center, #001f3f 0%, #050505 80%);
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(to bottom, #ffffff 40%, #555);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--glass);
  border: 1px solid var(--border);
  padding: 3rem;
  border-radius: 28px;
  transition: 0.4s ease;
}

.card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--primary);
  transform: translateY(-10px);
}

.button {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 1.2rem 3rem;
  border-radius: 100px;
  text-decoration: none;
  font-weight: 700;
  transition: 0.4s;
}

footer { text-align: center; padding: 5rem; border-top: 1px solid var(--border); color: var(--text-dim); }