:root{color-scheme:light dark;font-family:system-ui,-apple-system,sans-serif}body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:light-dark(#f3f4f6,#111827)}.card{width:min(480px,90vw);padding:2rem;border-radius:12px;background:light-dark(#ffffff,#1f2937);box-shadow:0 1px 3px #00000026}h1{font-size:1.25rem;margin-top:0}.muted{opacity:.7;margin-top:-.5rem}button{display:block;width:100%;padding:.65rem 1rem;margin-top:.75rem;border-radius:8px;border:none;background:#2563eb;color:#fff;font-size:.95rem;cursor:pointer}button.secondary{background:transparent;border:1px solid light-dark(#d1d5db,#374151);color:inherit}.error{color:#dc2626}.banner{padding:.5rem .75rem;border-radius:8px;background:light-dark(#fef3c7,#78350f)}.banner.success{background:light-dark(#dcfce7,#14532d)}ul{padding-left:1.25rem;list-style:none}.passkey-row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.25rem 0}.link-danger{all:unset;cursor:pointer;color:#dc2626;font-size:.85rem;flex-shrink:0}.link-danger:disabled{opacity:.6;cursor:default}