body{background:#f4f7fb}.card{border:0}.navbar{box-shadow:0 2px 8px rgba(0,0,0,.1)}
.anbk-shell{max-width:900px;margin:auto;background:#fff;padding:16px;border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,.08)}
@media (prefers-color-scheme: dark){body{background:#1f2937;color:#e5e7eb}.card,.anbk-shell{background:#111827;color:#e5e7eb}}