:root{--azul:#0f3d5e;--azul-claro:#e8f1f8;--verde:#1d7a4f;--vermelho:#b3261e;--texto:#1c1c1c;--cinza:#5f6368;--fundo:#f7f9fb;--cartao:#fff;color:var(--texto);background:var(--fundo);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0}.pagina{max-width:560px;margin:0 auto;padding:16px 16px 96px}h1{color:var(--azul);margin:8px 0 12px;font-size:1.5rem}h2{color:var(--azul);font-size:1.15rem}p{line-height:1.5}.cartao{background:var(--cartao);border-radius:12px;margin-bottom:12px;padding:16px;box-shadow:0 1px 3px #00000014}.botao{background:var(--azul);color:#fff;cursor:pointer;text-align:center;border:0;border-radius:10px;width:100%;margin-top:10px;padding:14px;font-size:1rem;font-weight:600;text-decoration:none;display:block}.botao.secundario{background:var(--azul-claro);color:var(--azul)}.botao:disabled{opacity:.5}.alternativa{text-align:left;cursor:pointer;width:100%;color:var(--texto);background:#fff;border:2px solid #d5dde5;border-radius:10px;margin:8px 0;padding:14px;font-size:1rem;display:block}.alternativa.certa{border-color:var(--verde);background:#e6f4ec}.alternativa.errada{border-color:var(--vermelho);background:#fbeaea}.passos li{margin-bottom:6px;line-height:1.45}.aviso{color:var(--cinza);font-size:.85rem}.rodape{color:var(--cinza);text-align:center;background:#fff;border-top:1px solid #e3e7eb;padding:8px 16px;font-size:.78rem;position:fixed;bottom:0;left:0;right:0}.contador{background:var(--azul-claro);color:var(--azul);border-radius:8px;padding:8px 12px;font-weight:600}.link{color:var(--azul);cursor:pointer;background:0 0;border:0;padding:8px 0;font-size:.95rem;text-decoration:underline;display:block}.erro{color:var(--vermelho)}input[type=email],textarea{border:1px solid #c9d2db;border-radius:8px;width:100%;padding:12px;font-size:1rem}input.codigo{letter-spacing:.35em;text-align:center;border:2px solid var(--azul);border-radius:10px;width:100%;margin-top:8px;padding:14px;font-size:2rem;font-weight:700}label.opcao{background:#fff;border:1px solid #d5dde5;border-radius:8px;margin:6px 0;padding:12px;display:block}