:root{--card-bg:#fff;--card-fg:#111827;--muted:#6b7280;--shadow:0 10px 30px rgba(0,0,0,.12);--radius:12px}.hud{left:8px;top:8px;background:rgba(17,24,39,.85);color:#fff;border-radius:8px;padding:4px 8px;font:12px/1.2 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;letter-spacing:.2px}.card,.hud{position:absolute;z-index:9999}.card{right:12px;top:12px;background:var(--card-bg);color:var(--card-fg);border-radius:var(--radius);box-shadow:var(--shadow);padding:10px 14px;min-width:160px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.card .title{font-weight:600;font-size:14px;margin:0 0 4px}.card .value{font-weight:700;font-size:18px;margin:0}.card .subtle{color:var(--muted);font-size:12px;margin-top:2px}body,html{height:100%;margin:0;padding:0}