/* Visor de leitura. Tipografia serifada no corpo — é para ler, não para operar. */

:root {
  --ink: #14343A; --ink-2: #3A5257; --muted: #6B7C7A;
  --paper: #EDF0EE; --surface: #FFFFFF; --surface-2: #F6F8F6;
  --line: #D2DAD7; --line-soft: #E3E9E6;
  --accent: #0E6E5E; --accent-bg: #E2EFEB;
  --alert: #9B2C2C; --alert-bg: #F7E4E4;
  --display: Archivo, "Helvetica Neue", Arial, sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #DEE8E5; --ink-2: #AFC1BD; --muted: #7E918D;
    --paper: #0D1A1D; --surface: #142529; --surface-2: #182C31;
    --line: #27444A; --line-soft: #1E363B;
    --accent: #49AE97; --accent-bg: #17362F;
    --alert: #DD8B8B; --alert-bg: #3A2020;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--display); font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* topo */
.topo {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 22px;
  padding: 16px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--line); background: var(--surface);
}
.marca { font-weight: 700; font-size: 17px; letter-spacing: -.01em; text-decoration: none; color: var(--ink); }
.topo nav { display: flex; flex-wrap: wrap; gap: 16px; }
.topo nav a { font-size: 13.5px; text-decoration: none; color: var(--ink-2); }
.topo nav a:hover, .topo nav a.ativo { color: var(--accent); }
.aviso {
  margin-left: auto; font-family: var(--mono); font-size: 10.5px;
  letter-spacing: .05em; text-transform: uppercase; color: var(--muted);
}

main { max-width: 1060px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px) 64px; }

.capa { padding: 44px 0 10px; }
.capa h1 { font-size: clamp(28px, 5vw, 42px); font-weight: 700; letter-spacing: -.02em; margin: 0 0 12px; text-wrap: balance; }
.lide { font-family: var(--serif); font-size: 17px; line-height: 1.6; color: var(--ink-2); max-width: 62ch; margin: 0; }

.bloco { margin-top: 42px; }
.rotulo {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  font-size: 12px; font-weight: 600; letter-spacing: .09em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 16px; padding-bottom: 8px; border-bottom: 1px solid var(--line);
}
.rotulo a { color: var(--ink); text-decoration: none; }
.rotulo span { font-family: var(--mono); font-weight: 400; letter-spacing: 0; text-transform: none; }
.destino { font-size: 13.5px; color: var(--muted); margin: -8px 0 0; }

/* cartões */
.grade { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.cartao {
  display: flex; flex-direction: column; gap: 7px; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--line-soft); border-radius: 4px;
  padding: 0 0 16px; overflow: hidden;
}
.cartao:hover { border-color: var(--accent); }
.cartao img { width: 100%; height: 150px; object-fit: cover; display: block; }
.cartao-sem-foto { display: block; height: 4px; background: var(--accent); opacity: .5; }
.cartao-meta {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .04em; text-transform: uppercase;
  color: var(--muted); padding: 14px 16px 0;
}
.cartao-titulo { font-size: 16px; font-weight: 600; line-height: 1.3; padding: 0 16px; text-wrap: balance; }
.cartao-rodape { font-family: var(--mono); font-size: 11px; color: var(--muted); padding: 0 16px; margin-top: auto; }

/* artigo */
.leitura { max-width: 44rem; margin: 0 auto; padding-top: 40px; }
.trilha { font-family: var(--mono); font-size: 11.5px; color: var(--muted); margin: 0 0 14px; }
.trilha a { color: var(--muted); }
.leitura h1 { font-size: clamp(27px, 4.6vw, 40px); font-weight: 700; letter-spacing: -.02em; line-height: 1.16; margin: 0 0 14px; text-wrap: balance; }
.olho {
  font-family: var(--serif); font-size: 20px; line-height: 1.5;
  color: var(--ink-2); margin: 0 0 22px; max-width: 40ch;
}
.assinatura { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-family: var(--mono); font-size: 11.5px; color: var(--muted); margin: 0 0 28px; }
.faceta { background: var(--ink); color: var(--paper); padding: 2px 9px; border-radius: 2px; letter-spacing: .03em; }

.vinculo {
  background: var(--alert-bg); border-left: 3px solid var(--alert);
  padding: 13px 16px; margin: 0 0 28px; font-size: 14px; line-height: 1.5;
}
.vinculo strong { color: var(--alert); }

.corpo { font-family: var(--serif); font-size: 18px; line-height: 1.68; }
.corpo h2 { font-family: var(--display); font-size: 21px; font-weight: 600; line-height: 1.25; margin: 40px 0 12px; letter-spacing: -.01em; }
.corpo h3 { font-family: var(--display); font-size: 17px; font-weight: 600; margin: 26px 0 8px; }
.corpo p { margin: 0 0 18px; }
.corpo ul, .corpo ol { margin: 0 0 18px; padding-left: 24px; }
.corpo li { margin-bottom: 8px; }
.corpo table { width: 100%; border-collapse: collapse; margin: 22px 0; font-family: var(--display); font-size: 14.5px; display: block; overflow-x: auto; }
.corpo th, .corpo td { border: 1px solid var(--line-soft); padding: 9px 12px; text-align: left; vertical-align: top; }
.corpo th { background: var(--surface-2); font-weight: 600; }
.corpo blockquote { margin: 22px 0; padding-left: 18px; border-left: 3px solid var(--line); color: var(--muted); }

.sm-foto { margin: 0 0 30px; }
.sm-foto img { width: 100%; height: auto; display: block; border-radius: 4px; }
.sm-foto figcaption, .sm-diagrama figcaption {
  margin-top: 10px; font-family: var(--display); font-size: 13px; color: var(--muted); line-height: 1.45;
}
.sm-diagrama {
  /* fundo opaco do miolo do diagrama: nenhuma reta atravessa */
  --sm-fundo: var(--surface);
  margin: 30px 0; padding: 22px 24px 16px;
  background: var(--surface); border: 1px solid var(--line-soft); border-radius: 4px; color: var(--ink);
}
.sm-diagrama svg { display: block; }
.sm-diagrama figcaption { padding-top: 12px; border-top: 1px solid var(--line-soft); }

.fontes, .vizinhos { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); }
.fontes h2, .vizinhos h2 { font-size: 12px; font-weight: 600; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.fontes ul, .vizinhos ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.fontes li { font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }
.oficial { font-family: var(--mono); font-size: 10px; letter-spacing: .04em; text-transform: uppercase; background: var(--accent-bg); color: var(--accent); padding: 1px 6px; border-radius: 2px; }
.consulta { font-family: var(--mono); font-size: 11px; color: var(--muted); }
.vizinhos li { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline; font-size: 15px; }
.vizinhos li span { font-family: var(--mono); font-size: 11px; color: var(--muted); }

.vazio { color: var(--muted); padding: 40px 0; }

footer {
  border-top: 1px solid var(--line); background: var(--surface);
  padding: 22px clamp(16px, 4vw, 40px);
  display: flex; flex-wrap: wrap; gap: 8px 24px;
  font-size: 12.5px; color: var(--muted);
}

/* Em resumo — bloco de varredura, acima do corpo. */
.resumo {
    margin: 0 0 32px;
    padding: 18px 22px;
    background: var(--surface-2);
    border-left: 3px solid var(--accent);
    border-radius: 3px;
}
.resumo .resumo-titulo {
    margin: 0 0 8px;
    font-family: var(--display);
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--muted);
}
.resumo ul { margin: 0; padding-left: 20px; font-family: var(--display); }
.resumo li { margin: 0 0 6px; font-size: .96rem; line-height: 1.55; }
.resumo li:last-child { margin-bottom: 0; }

/* Continue por aqui — links da árvore que não acharam âncora no corpo. */
.relacionados { margin: 44px 0 0; padding-top: 22px; border-top: 1px solid var(--line-soft); }
.relacionados h2 { margin: 0 0 12px; font-family: var(--display); font-size: 1.05rem; }
.relacionados ul { margin: 0; padding-left: 20px; }
.relacionados li { margin: 0 0 7px; }

/* Link para folha irmã ou prima: marcado, para dar para medir depois. */
a[data-rel] { text-decoration-thickness: 1px; text-underline-offset: 2px; }

/* Papel do galho: para que aquele ramo existe. */
.rotulo .papel {
  font-family: var(--display); font-size: .72rem; font-style: normal;
  font-weight: 500; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-bg);
  padding: 3px 8px; border-radius: 3px; margin-left: 10px; vertical-align: 2px;
}

/* Resumo em pergunta e resposta. */
.resumo dl { margin: 0; font-family: var(--display); }
.resumo dt { font-weight: 600; font-size: .95rem; margin: 0 0 4px; }
.resumo dd { margin: 0 0 12px; font-size: .93rem; line-height: 1.55; color: var(--ink-2); }
.resumo dd:last-child { margin-bottom: 0; }