:root {
  --bg: #0b0f19;
  --card: #11182a;
  --text: #e8eefc;
  --muted: #a8b3cf;
  --accent: #7aa2ff;
  --border: rgba(255, 255, 255, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 700px at 20% 10%, rgba(122,162,255,.22), transparent 60%),
              radial-gradient(1000px 700px at 80% 0%, rgba(120,255,214,.12), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  width: min(960px, 92%);
  margin: 0 auto;
  padding: 28px 0;
}

.tagline { color: var(--muted); margin-top: 6px; }

.nav { display: flex; gap: 14px; margin-top: 14px; flex-wrap: wrap; }
.nav a {
  color: var(--text);
  text-decoration: none;
  opacity: 0.9;
}
.nav a:hover { color: var(--accent); }

.card {
  background: rgba(17, 24, 42, 0.75);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  margin: 14px 0;
  backdrop-filter: blur(6px);
}

button {
  background: var(--accent);
  border: 0;
  color: #061022;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
}
button:hover { filter: brightness(1.05); }

.muted { color: var(--muted); }
.footer { opacity: 0.8; }
code { color: #cfe1ff; }