:root {
  --fundo: #f7f8f6;
  --superficie: #ffffff;
  --texto: #17201b;
  --suave: #56635b;
  --borda: #dde3de;
  --marca: #0f6b4f;
  --marca-forte: #0a5640;
  --marca-clara: #e3f1eb;
  --alerta: #9a5b00;
  --alerta-fundo: #fff4e0;
  --erro: #b42318;
  --erro-fundo: #fdecea;
  --ok: #0f6b4f;
  --ok-fundo: #e3f1eb;
  --raio: 12px;
  --sombra: 0 1px 2px rgb(16 24 20 / 6%), 0 4px 16px rgb(16 24 20 / 6%);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #0f1412;
    --superficie: #171e1b;
    --texto: #e7ece9;
    --suave: #a1aea6;
    --borda: #2a3430;
    --marca: #3fbf8f;
    --marca-forte: #5fd3a6;
    --marca-clara: #173328;
    --alerta: #f0b55a;
    --alerta-fundo: #33270f;
    --erro: #f3877d;
    --erro-fundo: #3a1a17;
    --ok: #5fd3a6;
    --ok-fundo: #173328;
    --sombra: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--fundo);
  color: var(--texto);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--marca); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); letter-spacing: -.01em; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
.container { width: min(1120px, 100% - 32px); margin-inline: auto; }

/* Cabeçalho */
.topo { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--fundo) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--borda); }
.topo .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.2rem; color: var(--texto); text-decoration: none; }
.logo svg { width: 28px; height: 28px; }
.menu { display: flex; align-items: center; gap: 20px; }
.menu a { color: var(--suave); text-decoration: none; font-size: .95rem; }
.menu a:hover { color: var(--texto); }
.menu a.botao { color: #fff; }
@media (prefers-color-scheme: dark) { .menu a.botao { color: #08130e; } }
@media (max-width: 760px) { .menu a:not(.botao) { display: none; } }

/* Botões */
.botao {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; border: 1px solid transparent;
  background: var(--marca); color: #fff; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
}
@media (prefers-color-scheme: dark) { .botao { color: #08130e; } }
.botao:hover { background: var(--marca-forte); }
.botao.secundario { background: transparent; color: var(--texto); border-color: var(--borda); }
.botao.secundario:hover { border-color: var(--suave); }
.botao.pequeno { padding: 8px 14px; font-size: .9rem; }
.botao:disabled { opacity: .55; cursor: progress; }

/* Seções */
section { padding: 72px 0; }
.hero { padding: 80px 0 64px; }
.hero .container { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .hero .container { grid-template-columns: 1fr; } }
.etiqueta { display: inline-block; padding: 4px 12px; border-radius: 999px; background: var(--marca-clara); color: var(--marca); font-size: .85rem; font-weight: 600; margin-bottom: 16px; }
.subtitulo { font-size: 1.15rem; color: var(--suave); max-width: 38em; }
.acoes { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.nota-rodape { font-size: .85rem; color: var(--suave); margin-top: 12px; }
.alt { background: var(--superficie); border-block: 1px solid var(--borda); }
.centro { text-align: center; max-width: 720px; margin: 0 auto 40px; }
.centro p { color: var(--suave); }

.grade { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.cartao { background: var(--superficie); border: 1px solid var(--borda); border-radius: var(--raio); padding: 24px; box-shadow: var(--sombra); }
.alt .cartao { background: var(--fundo); box-shadow: none; }
.cartao p { color: var(--suave); margin: 0; }
.icone { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--marca-clara); color: var(--marca); margin-bottom: 14px; }
.icone svg { width: 22px; height: 22px; }
.passo { font-weight: 700; color: var(--marca); font-size: .9rem; margin-bottom: 6px; }

/* Código de exemplo no hero */
.codigo { background: #0d1512; color: #d6e4dc; border-radius: var(--raio); padding: 20px; font: 13px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; overflow-x: auto; border: 1px solid #22302a; }
.codigo .c { color: #7f9a8c; } .codigo .s { color: #8fe0b7; } .codigo .n { color: #f2c66d; }

/* Integrações */
.selos { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.selo { padding: 10px 18px; border: 1px solid var(--borda); border-radius: 999px; background: var(--superficie); font-weight: 600; color: var(--suave); }
.alt .selo { background: var(--fundo); }

/* Planos */
.planos { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); align-items: stretch; }
.plano { display: flex; flex-direction: column; }
.plano.destaque { border-color: var(--marca); border-width: 2px; position: relative; }
.plano.destaque::before { content: "Mais escolhido"; position: absolute; top: -12px; left: 24px; background: var(--marca); color: #fff; font-size: .75rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
@media (prefers-color-scheme: dark) { .plano.destaque::before { color: #08130e; } }
.preco { font-size: 2.2rem; font-weight: 800; letter-spacing: -.02em; margin: 8px 0 0; color: var(--texto); }
.preco small { font-size: 1rem; font-weight: 500; color: var(--suave); }
.plano ul { list-style: none; padding: 0; margin: 16px 0 24px; flex: 1; }
.plano li { padding: 6px 0 6px 26px; position: relative; color: var(--suave); }
.plano li::before { content: ""; position: absolute; left: 0; top: 11px; width: 14px; height: 8px; border-left: 2px solid var(--marca); border-bottom: 2px solid var(--marca); transform: rotate(-45deg); }

/* FAQ */
details { border-bottom: 1px solid var(--borda); padding: 16px 0; }
details summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
details summary::after { content: "+"; color: var(--marca); font-size: 1.3rem; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { color: var(--suave); margin: 12px 0 0; }

/* Rodapé */
.rodape { padding: 40px 0; color: var(--suave); font-size: .9rem; border-top: 1px solid var(--borda); }
.rodape .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }

/* Formulários (tela de emissão) */
.app { padding: 32px 0 64px; }
.app-grade { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 24px; align-items: start; }
@media (max-width: 960px) { .app-grade { grid-template-columns: 1fr; } }
fieldset { border: 0; padding: 0; margin: 0 0 24px; }
legend { font-weight: 700; font-size: 1.05rem; margin-bottom: 12px; padding: 0; }
.campos { display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.campos .largo { grid-column: 1 / -1; }
@media (max-width: 560px) { .campos { grid-template-columns: 1fr; } }
label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 6px; }
label .dica { font-weight: 400; color: var(--suave); }
input, select, textarea {
  width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--borda);
  background: var(--fundo); color: var(--texto); font: inherit;
}
textarea { min-height: 90px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--marca) 45%, transparent); border-color: var(--marca); }
.linha-botoes { display: flex; flex-wrap: wrap; gap: 12px; }
.lateral { position: sticky; top: 88px; display: grid; gap: 20px; }
.chave-config { display: flex; align-items: center; gap: 8px; font-size: .9rem; margin: 12px 0 0; }
.chave-config input { width: auto; }

.aviso { border-radius: 10px; padding: 14px 16px; margin: 0 0 16px; font-size: .95rem; }
.aviso.ok { background: var(--ok-fundo); color: var(--ok); }
.aviso.erro { background: var(--erro-fundo); color: var(--erro); }
.aviso.atencao { background: var(--alerta-fundo); color: var(--alerta); }
.aviso ul { margin: 8px 0 0; padding-left: 20px; }
.resultado dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 0 0 16px; font-size: .92rem; }
.resultado dt { color: var(--suave); }
.resultado dd { margin: 0; word-break: break-all; font-family: ui-monospace, Menlo, Consolas, monospace; }
pre.xml { max-height: 280px; overflow: auto; background: var(--fundo); border: 1px solid var(--borda); border-radius: 8px; padding: 12px; font-size: 12px; white-space: pre-wrap; word-break: break-all; }
.vazio { color: var(--suave); font-size: .95rem; }