:root { --tinta:#1d3557; --suave:#f4f6fb; --borda:#d7deea; }
* { box-sizing: border-box; }
body { font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color:#1a1a1a; margin:0; background:#fff; }
main { max-width: 760px; margin: 0 auto; padding: 24px 18px 60px; }
h1 { color: var(--tinta); font-size: 1.5rem; }
.aviso { background: var(--suave); border-left: 4px solid var(--tinta); padding: 10px 12px; font-size: .9rem; color:#333; border-radius: 4px; }
fieldset { border: 1px solid var(--borda); border-radius: 8px; margin: 18px 0; padding: 14px 16px; }
legend { font-weight: 700; color: var(--tinta); padding: 0 6px; }
.pergunta { margin: 12px 0; }
label.q { display:block; font-weight: 600; margin-bottom: 6px; }
select, input[type=text], input[type=email] { width: 100%; padding: 9px 10px; border:1px solid var(--borda); border-radius:6px; font-size: 1rem; }
label.opt { display:block; font-weight: 400; margin: 4px 0; }
button { background: var(--tinta); color:#fff; border:0; border-radius:8px; padding: 12px 20px; font-size: 1rem; cursor:pointer; }
button:hover { opacity:.92; }
.nota-rgpd { font-size:.8rem; color:#666; margin-top:10px; }

/* Assistente por etapas */
.passo { margin: 14px 0; }
.passo[hidden] { display: none; }
.btn-passo { background: var(--tinta); color:#fff; border:0; border-radius:8px; padding:12px 22px; font-size:1rem; cursor:pointer; margin-top:8px; }
.btn-passo:hover { opacity:.92; }
.btn-passo:disabled { opacity:.6; cursor:default; }
.erro { color:#a32020; font-weight:600; margin:8px 0 0; }