:root {
  --bg: #0b1020;
  --card: #141b34;
  --text: #e9eeff;
  --muted: #b6c0e6;
  --brand: #7aa2ff;
  --brand-strong: #4f7dff;
  --border: #2a3458;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  background: radial-gradient(1200px 600px at 10% -10%, #1b2850 0, var(--bg) 50%);
  color: var(--text);
}

.container { width: min(1100px, 92%); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background: rgba(11, 16, 32, 0.75);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0;
}
.brand { color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: 0.4px; }
nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1rem;
}
nav a:hover { color: var(--text); }

.hero { padding: 5.5rem 0 3rem; }
.tag { color: var(--brand); font-weight: 600; margin: 0 0 0.5rem; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin: 0 0 1rem; line-height: 1.15; }
h2 { font-size: clamp(1.4rem, 2.8vw, 2rem); margin-bottom: 1rem; }

.section { padding: 2.2rem 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
}
.card h3 { margin-top: 0; }

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

.btn {
  display: inline-block;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  padding: 0.65rem 1rem;
  border-radius: 10px;
}
.btn.primary {
  background: var(--brand-strong);
  border-color: transparent;
}
.btn:hover { transform: translateY(-1px); }

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.site-footer .container { padding: 1rem 0 2rem; color: var(--muted); }

@media (max-width: 760px) {
  .site-header .container { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  nav a { margin-left: 0; margin-right: 0.9rem; }
}