*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{color:#1a1a1a;background:#f5f5f5;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button{cursor:pointer;font:inherit;background:0 0;border:none}img{max-width:100%;height:auto}.container{max-width:900px;margin:0 auto;padding:0 1rem}.btn{border-radius:6px;align-items:center;gap:.4rem;padding:.5rem 1rem;font-size:.9rem;font-weight:600;transition:opacity .15s;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{color:#fff;background:#2563eb}.btn-primary:hover:not(:disabled){background:#1d4ed8}.btn-secondary{color:#374151;background:#e5e7eb}.btn-secondary:hover:not(:disabled){background:#d1d5db}.btn-danger{color:#fff;background:#ef4444}.error-msg{color:#dc2626;margin-top:.25rem;font-size:.85rem}