:root {
  color-scheme: light;
  --bg: #f8fafc;
  --panel: #ffffff;
  --panel-soft: #f1f5f9;
  --border: #e2e8f0;
  --ink: #0f172a;
  --muted: #475569;
  --accent: #2563eb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  max-width: 980px;
  margin: 0 auto;
  padding: 22px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  object-fit: cover;
  font-weight: 900;
}
.top nav { display: flex; gap: 16px; flex-wrap: wrap; }
.top nav a { color: var(--muted); font-size: 13px; font-weight: 600; }

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}
.kicker {
  margin: 0 0 10px;
  color: #15803d;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}
h1 {
  margin: 0 0 10px;
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.04em;
}
.sub {
  max-width: 680px;
  margin: 0 0 36px;
  color: var(--muted);
  font-size: 15px;
}
section { margin: 0 0 34px; }
h2 {
  margin: 0 0 12px;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.card {
  display: grid;
  gap: 4px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  color: var(--ink);
}
.card strong { font-size: 15px; }
.card span { color: var(--muted); font-size: 13px; }
.card:hover { border-color: var(--accent); text-decoration: none; }

dl {
  margin: 0;
  border-top: 1px solid var(--border);
}
dt {
  padding-top: 14px;
  font-weight: 750;
  font-size: 15px;
}
dd {
  margin: 4px 0 14px;
  color: var(--muted);
  font-size: 15px;
  max-width: 760px;
}
dd a { font-weight: 600; }

.contact {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel);
}
.contact p { margin: 0 0 12px; color: var(--muted); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 9px 14px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}
.btn:hover { text-decoration: none; }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
}

.help-search {
  margin: 22px 0 30px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel);
}
.help-search label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .02em;
}
.help-search input {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
}
.help-search input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}
.help-search-status {
  min-height: 18px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.help-feedback {
  margin-top: 28px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel-soft);
}
.help-feedback h2 { margin-bottom: 6px; }
.help-feedback .actions { margin: 12px 0 6px; }
.help-feedback .btn { cursor: pointer; }

footer {
  max-width: 980px;
  margin: 0 auto;
  padding: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
}
footer a { color: var(--muted); }

@media (max-width: 760px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }
  main { padding-top: 34px; }
}

/* ---------- Entrada de leitura (2026-11) ----------
   Só opacity/transform, 240ms, sem depender da animação para o conteúdo
   aparecer: reduced-motion desliga tudo e o texto continua visível. */
@keyframes doc-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes doc-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

main {
  animation: doc-in 240ms cubic-bezier(.2, .8, .2, 1) both;
}

main .card {
  animation: doc-fade-in 220ms cubic-bezier(.2, .8, .2, 1) both;
}

main .card:nth-child(2) { animation-delay: 40ms; }
main .card:nth-child(3) { animation-delay: 80ms; }
main .card:nth-child(4) { animation-delay: 120ms; }
main .card:nth-child(n + 5) { animation-delay: 160ms; }

@media (prefers-reduced-motion: reduce) {
  main,
  main .card {
    animation: none !important;
  }
}
/* ---------- Ritmo de leitura (2026-11) ----------
   As páginas de guia liam como documento contínuo: sem separação entre
   seções e com marcador de lista genérico. Régua antes do h2 e ponto neutro
   dão estrutura sem virar card. */
h2 {
  margin: 40px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

main > h2:first-child {
  margin-top: 10px;
  padding-top: 0;
  border-top: 0;
}

ul {
  list-style: none;
  padding-left: 0;
}

ul li {
  position: relative;
  padding-left: 18px;
}

ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--muted) 70%, transparent);
}
/* A régua de seção não vale dentro de card: o card já tem padding e borda
   próprios, então a régua virava "espaço fantasma" acima do título. */
.card h2,
.card h3 {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}