:root {
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #0284c7;
  --accent-hover: #0369a1;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, -apple-system, sans-serif; background: var(--bg-color); color: var(--text-main); line-height: 1.6; }
.container { max-width: 900px; margin: 0 auto; padding: 2rem 1rem; }
header { text-align: center; padding: 3rem 1rem 1rem; }
header h1 { font-size: 2.5rem; color: var(--text-main); margin-bottom: 0.5rem; }
header p { color: var(--text-muted); font-size: 1.1rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin: 2rem 0; }
.card { background: var(--card-bg); padding: 1.5rem; border-radius: 8px; border: 1px solid #334155; }
.card h2 { margin-bottom: 0.5rem; font-size: 1.3rem; color: var(--accent); }
.cta { background: var(--card-bg); padding: 2rem; border-radius: 8px; text-align: center; border: 1px solid var(--accent); margin-top: 2rem; }
.cta h3 { margin-bottom: 0.5rem; }
.cta p { color: var(--text-muted); margin-bottom: 1rem; }
form { display: flex; gap: 0.5rem; justify-content: center; max-width: 400px; margin: 0 auto; }
input[type="email"] { flex: 1; padding: 0.75rem; border-radius: 4px; border: 1px solid #334155; background: #0f172a; color: #fff; }
button { padding: 0.75rem 1.5rem; border: none; background: var(--accent); color: white; font-weight: bold; border-radius: 4px; cursor: pointer; }
button:hover { background: var(--accent-hover); }
footer { text-align: center; color: var(--text-muted); font-size: 0.875rem; margin-top: 3rem; }