body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#0b0f14;color:#e8f0f3}header{padding:16px 20px;border-bottom:1px solid #1b2330;display:flex;justify-content:space-between;align-items:center}.brand{font-weight:700;letter-spacing:.3px}