:root {
  --bg: #faf8f4;
  --bg-2: #f2eee7;
  --ink: #1f1b16;
  --mudo: #6b645a;
  --linha: #e4ded3;
  --acento: #c2410c;
  --acento-ink: #fff;
  --acento-suave: #fde8dc;
  --code-bg: #1d1b18;
  --code-ink: #ece6da;
  --code-barra: #2a2723;
  --radius: 12px;
  --fonte: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15130f;
    --bg-2: #1c1914;
    --ink: #efe9dd;
    --mudo: #a39b8c;
    --linha: #2e2a23;
    --acento: #fb923c;
    --acento-ink: #1a0f06;
    --acento-suave: #3a2414;
    --code-bg: #0f0e0b;
    --code-barra: #1c1a16;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.65 var(--fonte);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--acento); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--acento); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: 1.6rem; margin-top: 2.2em; }
h3 { font-size: 1.2rem; margin-top: 1.8em; }
p { margin: 0 0 1em; }
.coluna { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.mudo { color: var(--mudo); font-size: .92em; }
.lead { font-size: 1.2rem; color: var(--mudo); max-width: 38em; }

code { font: .88em/1.5 var(--mono); background: var(--bg-2); border: 1px solid var(--linha); padding: .1em .38em; border-radius: 5px; }

/* topo */
.topo { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--linha); }
.topo-in { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.marca { font: 800 1.55rem/1 var(--mono); text-decoration: none; color: var(--ink); letter-spacing: -0.04em; }
.marca-sinal { color: var(--acento); }
.menu { display: flex; gap: 4px; }
.menu a { color: var(--ink); text-decoration: none; padding: 7px 12px; border-radius: 8px; font-size: .95rem; }
.menu a:hover { background: var(--bg-2); }
.menu a[aria-current] { background: var(--acento-suave); color: var(--acento); font-weight: 600; }

/* herói */
.heroi { padding: 72px 0 56px; background: radial-gradient(900px 380px at 80% -10%, var(--acento-suave), transparent 70%); }
.heroi-in { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.selo { display: inline-block; font: 600 .8rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--acento); background: var(--acento-suave); padding: 7px 11px; border-radius: 99px; margin-bottom: 18px; }
.acoes { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.botao { display: inline-block; background: var(--acento); color: var(--acento-ink); text-decoration: none; font-weight: 600; padding: 12px 22px; border-radius: 10px; border: 1px solid var(--acento); }
.botao:hover { filter: brightness(1.08); }
.botao-claro { background: transparent; color: var(--ink); border-color: var(--linha); }
.botao-claro:hover { background: var(--bg-2); filter: none; }

/* seções */
.secao { padding: 64px 0; }
.secao h2 { margin-top: 0; }
.secao-faixa { background: var(--bg-2); border-block: 1px solid var(--linha); }
.dupla { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.cartoes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
.cartao { background: var(--bg-2); border: 1px solid var(--linha); border-radius: var(--radius); padding: 22px; }
.cartao h3 { margin: 0 0 .4em; font-size: 1.1rem; }
.cartao p { margin: 0; color: var(--mudo); font-size: .96rem; }
.seta::after { content: " →"; }
.seta { font-weight: 600; text-decoration: none; }
.seta:hover { text-decoration: underline; }

/* código */
.janela { background: var(--code-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--linha); box-shadow: 0 18px 40px -22px rgba(0,0,0,.45); }
.janela-barra { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: var(--code-barra); }
.janela-barra i { width: 10px; height: 10px; border-radius: 50%; background: #4a453d; }
.janela-barra span { margin-left: 8px; font: .78rem var(--mono); color: #9a9284; }
pre.code { margin: 0 0 1.4em; padding: 18px 20px; background: var(--code-bg); color: var(--code-ink); overflow-x: auto; border-radius: var(--radius); font: .88rem/1.65 var(--mono); tab-size: 4; }
.janela pre.code { margin: 0; border-radius: 0; }
pre.code code { font: inherit; background: none; border: 0; padding: 0; color: inherit; }
.t-k { color: #f59e6b; }
.t-y { color: #7dd3c0; }
.t-s { color: #a8d672; }
.t-n { color: #e9c46a; }
.t-c { color: #8a8274; font-style: italic; }
.t-f { color: #8ab4f8; }

/* páginas simples e documentação */
.pagina-simples { max-width: 820px; padding-top: 56px; padding-bottom: 72px; }
.indice { list-style: none; padding: 0; margin: 28px 0; counter-reset: n; border-top: 1px solid var(--linha); }
.indice li { counter-increment: n; display: grid; grid-template-columns: 2.2rem 1fr; padding: 16px 0; border-bottom: 1px solid var(--linha); }
.indice li::before { content: counter(n); font: 600 .95rem var(--mono); color: var(--acento); padding-top: 2px; }
.indice a { font-size: 1.1rem; }
.indice span { grid-column: 2; color: var(--mudo); }

.doc-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 48px; padding-top: 40px; padding-bottom: 72px; }
.doc-menu { position: sticky; top: 86px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; }
.doc-menu-titulo { font: 600 .78rem var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--mudo); margin-bottom: 8px; }
.doc-menu ul, .toc ul { list-style: none; margin: 0; padding: 0; }
.doc-menu a { display: block; padding: 6px 10px; border-radius: 8px; color: var(--ink); text-decoration: none; font-size: .95rem; }
.doc-menu a:hover { background: var(--bg-2); }
.doc-menu a[aria-current] { background: var(--acento-suave); color: var(--acento); font-weight: 600; }
.doc { min-width: 0; max-width: 760px; }
.doc h1 { margin-bottom: .6em; }
.doc h2 { padding-top: .4em; border-top: 1px solid var(--linha); margin-top: 2.4em; }
.doc ul, .doc ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.doc li { margin-bottom: .35em; }
.doc li::marker { color: var(--acento); }
.toc { background: var(--bg-2); border: 1px solid var(--linha); border-radius: var(--radius); padding: 14px 18px; margin-bottom: 1.8em; }
.toc p { font: 600 .78rem var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--mudo); margin: 0 0 6px; }
.doc .toc ul { columns: 2; column-gap: 24px; padding: 0; margin: 0; }
.doc .toc li { break-inside: avoid; font-size: .93rem; padding: 2px 0; margin: 0; }
.doc .toc li::marker { content: ""; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.tabela { overflow-x: auto; margin: 0 0 1.4em; border: 1px solid var(--linha); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; padding: 9px 14px; border-bottom: 1px solid var(--linha); vertical-align: top; }
th { background: var(--bg-2); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }
.vizinhos { display: flex; justify-content: space-between; gap: 16px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--linha); }
.viz { display: block; border: 1px solid var(--linha); border-radius: var(--radius); padding: 12px 18px; text-decoration: none; color: var(--ink); font-weight: 600; min-width: 40%; }
.viz:hover { border-color: var(--acento); }
.viz small { display: block; color: var(--mudo); font-weight: 400; font-size: .8rem; }
.viz-prox { margin-left: auto; text-align: right; }

/* rodapé */
.rodape { border-top: 1px solid var(--linha); padding: 36px 0 48px; margin-top: 24px; }
.rodape p { margin: 0 0 4px; }

@media (max-width: 860px) {
  body { font-size: 16px; }
  .heroi { padding: 44px 0 36px; }
  .heroi-in, .dupla { grid-template-columns: 1fr; gap: 28px; }
  .cartoes { grid-template-columns: 1fr; }
  .secao { padding: 44px 0; }
  .doc-layout { grid-template-columns: 1fr; gap: 20px; }
  .doc-menu { position: static; max-height: none; border: 1px solid var(--linha); border-radius: var(--radius); padding: 12px; }
  .doc-menu ul { display: flex; flex-wrap: wrap; gap: 4px; }
  .doc .toc ul { columns: 1; }
  .menu a { padding: 7px 9px; }
}
@media (max-width: 440px) {
  .menu a { font-size: .86rem; padding: 6px 7px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }