/* KlerLabs — monocromático e claro.
   Sem cor de acento: hierarquia por peso, escala, espaço e fios de 1px.
   Sem fonte externa — nenhum request de terceiro numa página sobre privacidade. */

:root {
  --paper: #ffffff;
  --paper-sunk: #f7f7f6;
  --ink: #16181c;
  --ink-mid: #454b54;
  --ink-dim: #646b75;
  --rule: #e3e5e8;
  --rule-strong: #16181c;
  --focus: #2563eb;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --measure: 36rem;
  --gutter: clamp(1.25rem, 5vw, 3rem);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ---------- shell ---------- */

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.masthead { border-bottom: 1px solid var(--rule); }

.masthead .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.375rem 1.5rem;
  padding-top: 1.125rem;
  padding-bottom: 1.125rem;
}

.mark {
  font-weight: 600;
  letter-spacing: -0.015em;
  font-size: 1rem;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}

.nav {
  display: flex;
  gap: 1.375rem;
  font-size: 0.9375rem;
}
.nav a { color: var(--ink-dim); text-decoration: none; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); }

main { padding: clamp(3.5rem, 10vw, 6.5rem) 0 clamp(3rem, 8vw, 5rem); }

/* ---------- hero ---------- */

.hero h1 {
  font-size: clamp(2.25rem, 7vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0 0 2rem;
}

.lede {
  font-size: clamp(1.1875rem, 2.5vw, 1.4375rem);
  line-height: 1.45;
  letter-spacing: -0.012em;
  margin: 0;
  text-wrap: balance;
}

.hero .lede + p {
  color: var(--ink-mid);
  margin-top: 1.5rem;
}

/* ---------- seções ---------- */

section + section { margin-top: clamp(3rem, 8vw, 4.5rem); }

/* O card do produto traz a própria borda, então fica fora do fio divisor
   genérico — evita as duas regras se cancelarem por ordem de declaração. */
section + section:not(.product) {
  padding-top: clamp(3rem, 8vw, 4.5rem);
  border-top: 1px solid var(--rule);
}

h2 {
  font-size: 1.25rem;
  line-height: 1.3;
  letter-spacing: -0.018em;
  font-weight: 600;
  margin: 0 0 1rem;
}

h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 2rem 0 0.5rem;
}

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--ink-dim);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { text-decoration-color: var(--ink); }

strong { font-weight: 600; }

/* ---------- produto ---------- */

.product {
  border: 1px solid var(--rule);
  padding: clamp(1.5rem, 4vw, 2rem);
}
.product h2 { margin-bottom: 0.375rem; }
.product .status {
  color: var(--ink-dim);
  font-size: 0.9375rem;
  margin-bottom: 1.25rem;
}
.product ul { margin: 0 0 1.25rem; padding-left: 1.125rem; color: var(--ink-mid); }
.product ul li { margin-bottom: 0.375rem; }
.product ul strong { color: var(--ink); }

/* ---------- documento legal ---------- */

.doc h1 {
  font-size: clamp(1.75rem, 5.5vw, 2.375rem);
  line-height: 1.15;
  letter-spacing: -0.028em;
  font-weight: 600;
  margin: 0 0 0.625rem;
}
.doc .vigencia { color: var(--ink-dim); font-size: 0.9375rem; }

.toc { margin: 2.5rem 0 0; padding: 0; list-style: none; font-size: 0.9375rem; }
.toc li { border-top: 1px solid var(--rule); }
.toc li:last-child { border-bottom: 1px solid var(--rule); }
.toc a {
  display: flex;
  gap: 1rem;
  padding: 0.5625rem 0;
  color: var(--ink-mid);
  text-decoration: none;
}
.toc a:hover { color: var(--ink); }
.toc .n { color: var(--ink-dim); font-family: var(--mono); flex: none; min-width: 1.25rem; }

.doc section {
  margin-top: clamp(2.5rem, 6vw, 3.25rem);
  padding-top: clamp(2.5rem, 6vw, 3.25rem);
}
.doc section h2 { display: flex; gap: 0.875rem; }
.doc section h2 .n {
  color: var(--ink-dim);
  font-family: var(--mono);
  font-weight: 400;
  flex: none;
  min-width: 1.25rem;
}

.terceiros { width: 100%; border-collapse: collapse; font-size: 0.9375rem; margin: 0 0 1rem; }
.terceiros th, .terceiros td {
  text-align: left;
  padding: 0.6875rem 1rem 0.6875rem 0;
  border-top: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.5;
}
.terceiros th:last-child, .terceiros td:last-child { padding-right: 0; }
.terceiros thead th { color: var(--ink-dim); font-weight: 400; border-top: 0; padding-top: 0; }
.terceiros tbody th { color: var(--ink); font-weight: 600; }

.callout {
  background: var(--paper-sunk);
  padding: 1.125rem 1.25rem;
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}
.callout :last-child { margin-bottom: 0; }

/* ---------- suporte ---------- */

.contato {
  border: 1px solid var(--rule);
  padding: clamp(1.5rem, 4vw, 2rem);
  margin-top: 2rem;
}
.contato .email {
  display: inline-block;
  font-size: clamp(1.1875rem, 3.5vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  word-break: break-word;
  text-decoration-color: var(--ink-dim);
}
.contato .prazo { color: var(--ink-mid); font-size: 0.9375rem; margin: 0.875rem 0 0; }

.faq details { border-top: 1px solid var(--rule); }
.faq details:last-of-type { border-bottom: 1px solid var(--rule); }
.faq summary {
  cursor: pointer;
  padding: 0.9375rem 0;
  font-weight: 500;
  list-style: none;
  display: flex;
  gap: 0.875rem;
  align-items: baseline;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+";
  color: var(--ink-dim);
  font-family: var(--mono);
  flex: none;
}
.faq details[open] summary::before { content: "\2212"; }
.faq summary:hover { color: var(--ink-mid); }
.faq .answer { padding: 0 0 1.25rem 1.75rem; color: var(--ink-mid); font-size: 0.9375rem; }
.faq .answer ul { padding-left: 1.125rem; }
.faq .answer li { margin-bottom: 0.375rem; }
.faq .answer :last-child { margin-bottom: 0; }

/* ---------- rodapé ---------- */

.foot {
  border-top: 1px solid var(--rule);
  margin-top: clamp(4rem, 10vw, 6rem);
  padding: 2rem 0 3rem;
  color: var(--ink-dim);
  font-size: 0.875rem;
  line-height: 1.6;
}
.foot p { margin: 0 0 0.375rem; }
.foot .legal { color: var(--ink-mid); }
.foot .num { font-family: var(--mono); font-size: 0.9375em; white-space: nowrap; }
.foot nav { margin-top: 1.125rem; display: flex; flex-wrap: wrap; gap: 1.25rem; }
.foot nav a { color: var(--ink-dim); text-decoration: none; }
.foot nav a:hover { color: var(--ink); }

/* ---------- a11y ---------- */

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 1px;
}

.skip { position: absolute; left: -9999px; }
.skip:focus {
  left: var(--gutter);
  top: 0.5rem;
  z-index: 20;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 0.5rem 0.875rem;
  color: var(--ink);
  text-decoration: none;
}