/* ==========================================================================
   Calculadora Estatística — folha de estilo única
   Mobile-first. Sem dependências externas (carregamento rápido).
   ========================================================================== */

/* --- Tokens de design ---------------------------------------------------- */
:root {
  --c-primary:        #2563eb;
  --c-primary-dark:   #1d4ed8;
  --c-primary-darker: #1e40af;
  --c-primary-soft:   #eff6ff;
  --c-primary-soft2:  #dbeafe;

  --c-ink:    #0f172a;
  --c-text:   #374151;
  --c-muted:  #64748b;
  --c-bg:     #ffffff;
  --c-soft:   #f8fafc;
  --c-softer: #f1f5f9;
  --c-line:   #e5e7eb;

  --c-success:        #15803d;
  --c-success-strong: #166534;
  --c-success-bg:     #f0fdf4;
  --c-success-border: #bbf7d0;

  --c-danger:         #b91c1c;
  --c-danger-bg:      #fef2f2;
  --c-danger-border:  #fecaca;

  --c-warning:        #b45309;
  --c-warning-bg:     #fffbeb;
  --c-warning-border: #fde68a;

  --radius-sm: 8px;
  --radius:    12px;
  --radius-lg: 18px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow:    0 4px 14px rgba(15, 23, 42, .08);
  --shadow-lg: 0 14px 40px rgba(15, 23, 42, .12);

  --container: 1120px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
          Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", ui-monospace, Menlo, Consolas,
               "Liberation Mono", monospace;
}

/* --- Reset --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--c-primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { color: var(--c-ink); line-height: 1.25; font-weight: 700; }
ul, ol { padding-left: 1.3rem; }
strong { color: var(--c-ink); }
sub, sup { font-size: .72em; }

/* --- Layout -------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.1rem;
}
.section { padding-block: 2.6rem; }
.section--soft { background: var(--c-soft); }
.section--tint { background: var(--c-primary-soft); }
.narrow { max-width: 760px; margin-inline: auto; }
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--c-primary); color: #fff; padding: .6rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0; z-index: 200;
}
.skip-link:focus { left: 0; }

/* --- Cabeçalho ----------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--c-line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 64px;
}
.brand {
  display: flex; align-items: center; gap: .55rem;
  font-weight: 800; font-size: 1.12rem; color: var(--c-ink);
}
.brand:hover { text-decoration: none; }
.brand__mark { width: 32px; height: 32px; flex: none; }
.brand__name span { color: var(--c-primary); }

.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border: 1px solid var(--c-line);
  border-radius: var(--radius-sm); background: #fff; cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle__close { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle__open { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle__close { display: block; }

.main-nav { display: none; }
.main-nav.is-open {
  display: block;
  position: absolute; left: 0; right: 0; top: 100%;
  background: #fff; border-bottom: 1px solid var(--c-line);
  box-shadow: var(--shadow);
}
.main-nav ul {
  list-style: none; padding: .5rem 1.1rem 1rem; margin: 0;
  display: flex; flex-direction: column; gap: .15rem;
}
.main-nav a {
  display: block; padding: .7rem .6rem; border-radius: var(--radius-sm);
  color: var(--c-ink); font-weight: 600;
}
.main-nav a:hover { background: var(--c-primary-soft); text-decoration: none; }
.main-nav a.is-active { color: var(--c-primary-dark); background: var(--c-primary-soft); }
.main-nav .nav-cta {
  margin-top: .35rem; background: var(--c-primary); color: #fff;
  text-align: center;
}
.main-nav .nav-cta:hover { background: var(--c-primary-dark); }

/* --- Rodapé -------------------------------------------------------------- */
.site-footer {
  background: var(--c-ink); color: #cbd5e1;
  padding-block: 2.6rem 1.6rem; margin-top: 3rem;
  font-size: .96rem;
}
.site-footer h3 {
  color: #fff; font-size: .82rem; text-transform: uppercase;
  letter-spacing: .06em; margin-bottom: .7rem;
}
.footer-grid {
  display: grid; gap: 1.6rem 1.2rem;
  grid-template-columns: 1fr;
}
.footer-grid ul { list-style: none; padding: 0; display: grid; gap: .4rem; }
.site-footer a { color: #cbd5e1; }
.site-footer a:hover { color: #fff; }
.footer-brand p { margin-top: .6rem; color: #94a3b8; font-size: .92rem; }
.footer-bottom {
  margin-top: 1.8rem; padding-top: 1.2rem;
  border-top: 1px solid #1e293b; color: #94a3b8; font-size: .86rem;
}
.footer-bottom p + p { margin-top: .4rem; }

/* --- Botões -------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem; font-family: inherit; font-size: 1rem; font-weight: 700;
  padding: .85rem 1.4rem; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer; text-align: center;
  transition: background-color .15s ease, transform .05s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--c-primary); color: #fff; }
.btn--primary:hover { background: var(--c-primary-dark); }
.btn--block { width: 100%; }
.btn--lg { padding: 1rem 1.6rem; font-size: 1.06rem; }
.btn--ghost {
  background: #fff; color: var(--c-primary-dark);
  border-color: var(--c-line);
}
.btn--ghost:hover { background: var(--c-primary-soft); }
.btn--light { background: #fff; color: var(--c-primary-dark); }
.btn--light:hover { background: var(--c-primary-soft); }
:focus-visible {
  outline: 3px solid #93c5fd; outline-offset: 2px;
  border-radius: 4px;
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  background: linear-gradient(180deg, var(--c-primary-soft), #fff 88%);
  padding-block: 2.8rem 2.4rem;
  border-bottom: 1px solid var(--c-line);
}
.hero__eyebrow {
  display: inline-block; font-weight: 700; font-size: .82rem;
  letter-spacing: .05em; text-transform: uppercase;
  color: var(--c-primary-dark); background: var(--c-primary-soft2);
  padding: .3rem .7rem; border-radius: 999px; margin-bottom: .9rem;
}
.hero h1 {
  font-size: clamp(1.85rem, 5.4vw, 2.8rem); letter-spacing: -.02em;
}
.hero p.lead {
  font-size: 1.12rem; color: var(--c-text); margin-top: .8rem;
  max-width: 640px;
}
.hero__actions {
  display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.4rem;
}
.hero__badges {
  display: flex; flex-wrap: wrap; gap: .5rem 1.1rem; margin-top: 1.5rem;
  color: var(--c-muted); font-size: .94rem; font-weight: 600;
}
.hero__badges span { display: inline-flex; align-items: center; gap: .35rem; }
.hero__badges svg { width: 18px; height: 18px; color: var(--c-success); }

/* --- Cabeçalho de página interna ---------------------------------------- */
.page-head {
  background: linear-gradient(180deg, var(--c-primary-soft), #fff);
  padding-block: 1.6rem 2rem; border-bottom: 1px solid var(--c-line);
}
.page-head h1 {
  font-size: clamp(1.6rem, 4.6vw, 2.3rem); letter-spacing: -.02em;
  margin-top: .5rem;
}
.page-head p.lead {
  font-size: 1.08rem; margin-top: .6rem; max-width: 680px;
}

/* --- Trilha de navegação (breadcrumb) ----------------------------------- */
.breadcrumb { font-size: .9rem; color: var(--c-muted); }
.breadcrumb ol {
  list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .35rem;
}
.breadcrumb li::after { content: "›"; margin-left: .35rem; color: var(--c-line); }
.breadcrumb li:last-child::after { content: ""; }

/* --- Seções e títulos ---------------------------------------------------- */
.section-title { text-align: center; margin-bottom: 1.6rem; }
.section-title h2 { font-size: clamp(1.4rem, 3.6vw, 1.9rem); }
.section-title p { color: var(--c-muted); margin-top: .4rem; }

/* --- Grades de cards ----------------------------------------------------- */
.card-grid {
  display: grid; gap: 1rem;
  grid-template-columns: 1fr;
}
.card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 1.25rem;
  box-shadow: var(--shadow-sm); transition: box-shadow .15s ease, transform .15s ease;
}
a.card:hover {
  text-decoration: none; box-shadow: var(--shadow);
  transform: translateY(-3px); border-color: var(--c-primary-soft2);
}
.card__icon {
  width: 44px; height: 44px; border-radius: 11px;
  background: var(--c-primary-soft); color: var(--c-primary-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: .85rem; flex: none;
}
.card__icon svg { width: 24px; height: 24px; }
.card h3 { font-size: 1.12rem; }
.card p { color: var(--c-muted); font-size: .96rem; margin-top: .35rem; flex: 1; }
.card__cta {
  margin-top: .9rem; font-weight: 700; color: var(--c-primary-dark);
  font-size: .95rem; display: inline-flex; align-items: center; gap: .3rem;
}
.card__tag {
  align-self: flex-start; font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .04em;
  color: var(--c-primary-dark); background: var(--c-primary-soft);
  padding: .2rem .55rem; border-radius: 999px; margin-bottom: .6rem;
}

/* --- Bloco "por que confiar" -------------------------------------------- */
.feature-grid {
  display: grid; gap: 1.1rem; grid-template-columns: 1fr;
  max-width: 760px; margin-inline: auto;
}
.feature {
  display: flex; gap: .85rem; align-items: flex-start;
}
.feature__icon {
  width: 40px; height: 40px; border-radius: 10px; flex: none;
  background: var(--c-primary-soft); color: var(--c-primary-dark);
  display: flex; align-items: center; justify-content: center;
}
.feature__icon svg { width: 22px; height: 22px; }
.feature h3 { font-size: 1.04rem; }
.feature p { font-size: .95rem; color: var(--c-muted); margin-top: .2rem; }

/* --- Widget de calculadora ---------------------------------------------- */
.calculator {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: 1.3rem; margin-block: 1.4rem;
}
.calculator__title {
  display: flex; align-items: center; gap: .55rem;
  font-size: 1.18rem; margin-bottom: .25rem;
}
.calculator__title svg { width: 22px; height: 22px; color: var(--c-primary); }
.calculator__hint { color: var(--c-muted); font-size: .95rem; margin-bottom: 1.1rem; }

.field-group {
  border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 1rem; margin-bottom: 1rem; background: var(--c-soft);
}
.field-group > legend, .field-group__title {
  font-weight: 700; color: var(--c-ink); font-size: .98rem;
  padding-inline: .3rem;
}
.field-row { display: grid; gap: .9rem; grid-template-columns: 1fr; margin-top: .8rem; }

.field { display: flex; flex-direction: column; gap: .35rem; }
.field label { font-weight: 600; color: var(--c-ink); font-size: .95rem; }
.field .help { font-size: .84rem; color: var(--c-muted); }
.input, select.input {
  font-family: inherit; font-size: 1.05rem; color: var(--c-ink);
  padding: .7rem .8rem; border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm); background: #fff; width: 100%;
  min-height: 46px; transition: border-color .15s ease, box-shadow .15s ease;
}
.input:focus {
  outline: none; border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .15);
}
.input.has-error { border-color: var(--c-danger); background: var(--c-danger-bg); }
.input-affix { position: relative; }
.input-affix .input { padding-right: 2.4rem; }
.input-affix__unit {
  position: absolute; right: .8rem; top: 50%; transform: translateY(-50%);
  color: var(--c-muted); font-weight: 600; pointer-events: none;
}

/* Controle segmentado (radios) */
.segmented {
  display: flex; flex-wrap: wrap; gap: .4rem;
  margin-top: .15rem;
}
.segmented label { cursor: pointer; }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented span {
  display: block; padding: .55rem .85rem; border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm); font-weight: 600; font-size: .95rem;
  color: var(--c-text); background: #fff; transition: all .12s ease;
}
.segmented label:hover span { border-color: var(--c-primary); }
.segmented input:checked + span {
  background: var(--c-primary); border-color: var(--c-primary); color: #fff;
}
.segmented input:focus-visible + span {
  outline: 3px solid #93c5fd; outline-offset: 2px;
}

.field-error {
  display: none; color: var(--c-danger); font-size: .9rem; font-weight: 600;
  margin-top: .2rem;
}
.field-error.is-visible { display: block; }

.calculator__actions {
  display: flex; flex-wrap: wrap; gap: .6rem; margin-top: .3rem;
}

/* --- Cartão de resultado ------------------------------------------------- */
.result {
  margin-top: 1.3rem; border-radius: var(--radius);
  border: 2px solid var(--c-line); overflow: hidden;
}
.result[hidden] { display: none; }
.result__banner {
  padding: 1.1rem 1.2rem; display: flex; gap: .7rem; align-items: flex-start;
}
.result__banner svg { width: 26px; height: 26px; flex: none; margin-top: .1rem; }
.result__headline { font-size: 1.18rem; font-weight: 800; }
.result__sub { font-size: .96rem; margin-top: .15rem; }

.result--significant { border-color: var(--c-success-border); }
.result--significant .result__banner { background: var(--c-success-bg); }
.result--significant .result__headline,
.result--significant .result__banner svg { color: var(--c-success-strong); }

.result--ns { border-color: var(--c-warning-border); }
.result--ns .result__banner { background: var(--c-warning-bg); }
.result--ns .result__headline,
.result--ns .result__banner svg { color: var(--c-warning); }

.result--neutral { border-color: var(--c-primary-soft2); }
.result--neutral .result__banner { background: var(--c-primary-soft); }
.result--neutral .result__headline,
.result--neutral .result__banner svg { color: var(--c-primary-darker); }

.result__body { padding: 1.1rem 1.2rem; background: #fff; }
.metric-grid {
  display: grid; gap: .7rem; grid-template-columns: repeat(2, 1fr);
}
.metric {
  background: var(--c-soft); border: 1px solid var(--c-line);
  border-radius: var(--radius-sm); padding: .7rem .8rem;
}
.metric__label {
  font-size: .8rem; color: var(--c-muted); font-weight: 600;
  text-transform: uppercase; letter-spacing: .03em;
}
.metric__value {
  font-size: 1.32rem; font-weight: 800; color: var(--c-ink);
  font-variant-numeric: tabular-nums; margin-top: .15rem;
}
.metric__value.is-pos { color: var(--c-success); }
.metric__value.is-neg { color: var(--c-danger); }
.metric__note { font-size: .82rem; color: var(--c-muted); margin-top: .1rem; }
.result__interpretation {
  margin-top: 1rem; padding-top: 1rem; border-top: 1px dashed var(--c-line);
  font-size: .98rem;
}
.result__interpretation strong { color: var(--c-ink); }

/* --- Conteúdo longo (artigo) -------------------------------------------- */
.prose { font-size: 1.0625rem; }
.prose h2 {
  font-size: clamp(1.35rem, 3.4vw, 1.7rem); margin-top: 2.2rem;
  scroll-margin-top: 84px;
}
.prose h3 {
  font-size: 1.18rem; margin-top: 1.7rem; scroll-margin-top: 84px;
}
.prose p { margin-top: .9rem; }
.prose ul, .prose ol { margin-top: .8rem; }
.prose li { margin-top: .35rem; }
.prose li::marker { color: var(--c-primary); }
.prose strong { color: var(--c-ink); }
.prose h2 + p, .prose h3 + p { margin-top: .55rem; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }

/* Caixa de fórmula */
.formula {
  background: var(--c-softer); border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-primary); border-radius: var(--radius-sm);
  padding: .85rem 1rem; margin-block: 1rem; overflow-x: auto;
  font-family: var(--font-mono); font-size: 1rem; color: var(--c-ink);
}
.formula .formula__where {
  display: block; margin-top: .5rem; font-family: var(--font);
  font-size: .88rem; color: var(--c-muted);
}

/* Callout / caixas de destaque */
.callout {
  border: 1px solid var(--c-line); border-left: 4px solid var(--c-muted);
  border-radius: var(--radius-sm); padding: .95rem 1.1rem;
  margin-block: 1.2rem; background: var(--c-soft);
}
.callout__title {
  display: flex; align-items: center; gap: .45rem;
  font-weight: 800; color: var(--c-ink); margin-bottom: .3rem;
}
.callout__title svg { width: 19px; height: 19px; }
.callout p { margin-top: .4rem; }
.callout p:first-of-type { margin-top: 0; }
.callout--example { border-left-color: var(--c-primary); background: var(--c-primary-soft); }
.callout--example .callout__title { color: var(--c-primary-darker); }
.callout--tip { border-left-color: var(--c-success); background: var(--c-success-bg); }
.callout--tip .callout__title { color: var(--c-success-strong); }
.callout--warning { border-left-color: var(--c-warning); background: var(--c-warning-bg); }
.callout--warning .callout__title { color: var(--c-warning); }

/* Sumário (TOC) */
.toc {
  background: var(--c-soft); border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 1rem 1.2rem; margin-block: 1.5rem;
}
.toc > strong {
  display: block; font-size: .82rem; text-transform: uppercase;
  letter-spacing: .05em; color: var(--c-muted); margin-bottom: .55rem;
}
.toc ol { margin: 0; padding-left: 1.2rem; }
.toc li { margin-top: .3rem; }
.toc a { color: var(--c-primary-dark); }

/* Tabelas */
.table-wrap { overflow-x: auto; margin-block: 1.2rem; }
table.data {
  width: 100%; border-collapse: collapse; font-size: .96rem;
  min-width: 360px;
}
table.data th, table.data td {
  border: 1px solid var(--c-line); padding: .6rem .7rem; text-align: left;
}
table.data thead th { background: var(--c-softer); color: var(--c-ink); }
table.data tbody tr:nth-child(even) { background: var(--c-soft); }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; }

/* Passos numerados */
.steps { list-style: none; padding: 0; counter-reset: step; margin-top: 1rem; }
.steps li {
  position: relative; padding-left: 2.6rem; margin-top: 1rem;
}
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: -.1rem;
  width: 1.8rem; height: 1.8rem; border-radius: 50%;
  background: var(--c-primary); color: #fff; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem;
}

/* FAQ — usa <details>, sem JavaScript */
.faq { margin-top: 1rem; }
.faq details {
  border: 1px solid var(--c-line); border-radius: var(--radius-sm);
  margin-top: .6rem; background: #fff;
}
.faq summary {
  cursor: pointer; padding: .9rem 1rem; font-weight: 700; color: var(--c-ink);
  list-style: none; display: flex; justify-content: space-between; gap: 1rem;
  align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; font-size: 1.4rem; color: var(--c-primary);
  font-weight: 700; line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq details[open] summary { border-bottom: 1px solid var(--c-line); }
.faq .faq__answer { padding: .3rem 1rem 1rem; }
.faq .faq__answer p { margin-top: .6rem; }
.faq .faq__answer p:first-child { margin-top: .2rem; }

/* --- Espaço de anúncio (AdSense) ---------------------------------------- */
.ad-slot { margin-block: 1.6rem; text-align: center; min-height: 0; }
.ad-slot:empty { display: none; }
.ad-slot:not(:empty)::before {
  content: "Publicidade"; display: block; font-size: .7rem;
  text-transform: uppercase; letter-spacing: .08em; color: #94a3b8;
  margin-bottom: .3rem;
}

/* --- Caixa de recomendação (afiliados) ---------------------------------- */
.recommend {
  border: 1px solid var(--c-primary-soft2); background: var(--c-primary-soft);
  border-radius: var(--radius); padding: 1.2rem; margin-block: 1.8rem;
}
.recommend__title {
  display: flex; align-items: center; gap: .5rem;
  font-weight: 800; color: var(--c-primary-darker); font-size: 1.08rem;
}
.recommend__title svg { width: 22px; height: 22px; }
.recommend p { font-size: .96rem; margin-top: .4rem; }
.recommend ul { margin-top: .7rem; }
.recommend li { margin-top: .45rem; }
.recommend .disclosure {
  font-size: .82rem; color: var(--c-muted); margin-top: .9rem;
  border-top: 1px dashed var(--c-primary-soft2); padding-top: .6rem;
}

/* --- "Calculadoras relacionadas" ---------------------------------------- */
.related { margin-top: 2.4rem; }
.related h2 { font-size: 1.3rem; margin-bottom: .9rem; }

/* --- CTA final ----------------------------------------------------------- */
.cta-band {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-darker));
  color: #fff; border-radius: var(--radius-lg);
  padding: 1.8rem 1.4rem; text-align: center; margin-block: 2rem;
}
.cta-band h2 { color: #fff; font-size: 1.45rem; }
.cta-band p { color: #dbeafe; margin-top: .5rem; }
.cta-band .btn { margin-top: 1.1rem; }

/* --- Utilidades ---------------------------------------------------------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.muted { color: var(--c-muted); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.tag-list { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .6rem; }
.tag-list a, .tag-list span {
  font-size: .85rem; font-weight: 600; padding: .3rem .7rem;
  background: var(--c-softer); border-radius: 999px; color: var(--c-text);
}
.tag-list a:hover { background: var(--c-primary-soft); text-decoration: none; }

/* --- Entrada em grade e área de texto (testes adicionais) --------------- */
textarea.input {
  min-height: 130px; resize: vertical; line-height: 1.55;
  font-variant-numeric: tabular-nums;
}
.matrix-grid { border-collapse: separate; border-spacing: 5px; }
.matrix-grid th { font-weight: 600; }
.matrix-grid .input { min-width: 74px; text-align: center; padding: .55rem .4rem; }
.matrix-grid thead .input,
.matrix-grid tbody th .input {
  background: var(--c-primary-soft); font-weight: 600;
}
.matrix-corner { width: 1px; padding: 0; }
.matrix-controls { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .9rem; }
.btn--sm { padding: .5rem .85rem; font-size: .9rem; }
.group-list { display: grid; gap: .9rem; }

/* --- Estilos movidos de atributos inline -------------------------------- */
.site-footer .brand,
.site-footer .brand__name { color: #fff; }
.field-group > .segmented { margin-top: .6rem; }
.help--block { margin: .4rem 0 .8rem; }
.text-sm { font-size: .92rem; }
.mt-2 { margin-top: 2rem; }
.text-center .lead { margin-inline: auto; }
.text-center .hero__actions { justify-content: center; }

/* --- Responsivo ---------------------------------------------------------- */
@media (min-width: 560px) {
  .field-row { grid-template-columns: 1fr 1fr; }
  .field-row--single { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 720px) {
  .card-grid--2 { grid-template-columns: repeat(2, 1fr); }
  .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .calculator { padding: 1.8rem; }
  .section { padding-block: 3.4rem; }
}

@media (min-width: 960px) {
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }

  /* Navegação em telas grandes: sempre visível, na horizontal */
  .nav-toggle { display: none; }
  .main-nav {
    display: block; position: static; box-shadow: none; border: 0;
    background: transparent;
  }
  .main-nav ul {
    flex-direction: row; align-items: center; padding: 0; gap: .25rem;
  }
  .main-nav a { padding: .5rem .8rem; }
  .main-nav .nav-cta { margin-top: 0; margin-left: .4rem; padding: .55rem 1.1rem; }
}

/* --- Pagina de apoio / doacoes ----------------------------------------- */
.donate-card { text-align: center; }
.donate-card h3 { font-size: 1.18rem; }
.donate-qr {
  width: 190px; height: 190px; margin: 1.1rem auto 0; display: block;
  border: 1px solid var(--c-line); border-radius: var(--radius-sm);
  padding: 8px; background: #fff;
}
.pix-key {
  display: inline-block; font-family: var(--font-mono); font-weight: 700;
  color: var(--c-ink); background: var(--c-primary-soft);
  padding: .3rem .6rem; border-radius: 6px;
}
.pix-code {
  display: block; width: 100%; margin-top: .8rem; padding: .7rem .8rem;
  background: var(--c-softer); border: 1px solid var(--c-line);
  border-radius: var(--radius-sm); font-family: var(--font-mono);
  font-size: .76rem; line-height: 1.55; word-break: break-all;
  color: var(--c-ink); text-align: left;
}