/* Artigo "O fio do argumento" — estilos escopados sob #articleBody.
   O índice da seção fica FORA deste escopo, e por isso permanece em Inter. */
#articleBody{--ink:#0f172a; --ink-body:#334155; --muted:#64748b; --faint:#94a3b8;
  --line:#e2e8f0; --paper:#f1f5f9; --surface:#ffffff;
  --brand:#4f46e5; --brand-700:#4338ca; --brand-900:#312e81;
  --i50:#eef2ff; --i100:#e0e7ff; --i200:#c7d2fe; --i400:#818cf8;
  --potencia:#818cf8; --eficiencia:#7c3aed;
  --serif:'Source Serif 4',Georgia,serif;
  --sans:'Inter',system-ui,sans-serif;
  --rail:132px;}
#articleBody *{box-sizing:border-box}
#articleBody{margin:0;background:var(--paper);color:var(--ink-body);font-family:var(--serif);
  font-size:19px;line-height:1.65;-webkit-font-smoothing:antialiased}
#articleBody .wrap{max-width:1080px;margin:0 auto;padding:0 28px;position:relative}
#articleBody #rail{position:absolute;left:0;top:0;width:var(--rail);pointer-events:none;z-index:0}
#articleBody #rail path{fill:none;stroke-width:3;stroke-linecap:round}
#articleBody .col{position:relative;z-index:1;margin-left:var(--rail);max-width:660px}
#articleBody h1, #articleBody h2, #articleBody h3{font-family:var(--serif);color:var(--ink);font-weight:600;letter-spacing:-.01em}
#articleBody h1{font-size:clamp(38px,6.2vw,62px);line-height:1.08;margin:0 0 24px}
#articleBody h2{font-size:clamp(27px,3.6vw,36px);line-height:1.22;margin:0 0 18px}
#articleBody h3{font-size:20px;margin:0 0 8px}
#articleBody p{margin:0 0 20px}
#articleBody strong{font-weight:600;color:var(--ink)}
#articleBody .lede{font-size:22px;color:var(--ink);line-height:1.55}
#articleBody .eyebrow{font-family:var(--sans);font-size:12px;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--brand-700);margin:0 0 10px;display:block}
#articleBody .quiet{color:var(--muted);font-size:17px}
#articleBody header.hero{padding:120px 0 96px}
#articleBody .hero .kicker{font-family:var(--sans);font-size:14px;font-weight:600;color:var(--muted);margin-bottom:34px}
#articleBody .hero .bridge{font-family:var(--sans);font-size:17px;font-weight:600;color:var(--brand-700);
  margin:30px 0 0;display:flex;align-items:center;gap:12px}
#articleBody .hero .bridge::before{content:"";width:26px;height:2px;background:var(--brand);border-radius:2px;flex:none}
#articleBody .hero blockquote{margin:34px 0 0;padding:0 0 0 24px;border-left:3px solid var(--eficiencia);
  font-size:21px;color:var(--ink);line-height:1.55}
#articleBody section.node{padding:76px 0;scroll-margin-top:40px}
#articleBody .tag{font-family:var(--sans);font-size:11px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:100px;margin-bottom:16px}
#articleBody .tag::before{content:"";width:8px;height:8px;border-radius:50%}
#articleBody .tag.p{background:var(--i50);color:var(--brand-900)}
#articleBody .tag.p::before{background:var(--potencia)}
#articleBody .tag.e{background:#f5f0ff;color:#5b21b6}
#articleBody .tag.e::before{background:var(--eficiencia)}
#articleBody .tag.b{background:var(--i100);color:var(--brand-900)}
#articleBody .tag.b::before{background:linear-gradient(90deg,var(--potencia) 50%,var(--eficiencia) 50%)}
#articleBody .card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px 24px;margin:0 0 14px}
#articleBody .card h3{font-family:var(--sans);font-size:17px;font-weight:700;color:var(--brand-900)}
#articleBody .card p{font-size:17px;margin:0;color:var(--ink-body)}
#articleBody .card .idx{font-family:var(--sans);font-size:12px;font-weight:700;color:var(--faint);letter-spacing:.1em}
#articleBody .grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
#articleBody .pair{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:8px 0 26px}
#articleBody .pair > div{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;border-top:4px solid}
#articleBody .pair .pp{border-top-color:var(--potencia)}
#articleBody .pair .pe{border-top-color:var(--eficiencia)}
#articleBody .pair h3{font-family:var(--sans);font-size:15px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
#articleBody .pair .pp h3{color:var(--brand-700)}
#articleBody .pair .pe h3{color:#6d28d9}
#articleBody .pair p{font-size:17px;margin:6px 0 0}
#articleBody .axis{border-left:3px solid var(--eficiencia);padding:2px 0 2px 20px;margin:0 0 22px}
#articleBody .axis h3{font-family:var(--sans);font-size:17px;font-weight:700;color:var(--ink)}
#articleBody .axis p{font-size:17px;margin:4px 0 0}
#articleBody .arch{border-top:1px solid var(--line);padding:20px 0}
#articleBody .arch:last-of-type{border-bottom:1px solid var(--line)}
#articleBody .arch h3{font-family:var(--sans);font-size:18px;font-weight:700;color:var(--brand-900);margin-bottom:2px}
#articleBody .arch .who{font-family:var(--sans);font-size:14px;color:var(--muted);margin:0 0 8px}
#articleBody .arch p{font-size:17px;margin:0}
#articleBody .spec{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px;margin:6px 0 22px}
#articleBody .spec .bar{height:6px;border-radius:3px;background:linear-gradient(90deg,var(--potencia),var(--eficiencia));margin:20px 0 10px}
#articleBody .spec .ends{display:flex;justify-content:space-between;font-family:var(--sans);font-size:13px;
  font-weight:700;letter-spacing:.08em;text-transform:uppercase}
#articleBody .spec .ends span:first-child{color:var(--brand-700)}
#articleBody .spec .ends span:last-child{color:#6d28d9}
#articleBody .close{background:var(--brand-900);color:#e0e7ff;border-radius:22px;padding:48px;margin:34px 0 0;
  display:grid;grid-template-columns:184px 1fr;gap:36px;align-items:center}
#articleBody .close .cover{width:184px;border-radius:8px;box-shadow:0 18px 40px -12px rgba(0,0,0,.6)}
#articleBody .close h2{color:#fff;font-size:31px;margin-bottom:14px}
#articleBody .close p{color:var(--i200);font-size:18px}
#articleBody .buy{display:inline-flex;align-items:center;gap:10px;background:#fff;color:var(--brand-900);
  font-family:var(--sans);font-size:16px;font-weight:700;text-decoration:none;
  padding:14px 24px;border-radius:100px;margin-top:6px;transition:transform .15s,box-shadow .15s}
#articleBody .buy:hover{transform:translateY(-2px);box-shadow:0 10px 24px -8px rgba(0,0,0,.5)}
#articleBody .buy:focus-visible{outline:3px solid var(--i400);outline-offset:3px}
#articleBody .buy svg{width:16px;height:16px;flex:none}
#articleBody .close .fine{font-family:var(--sans);font-size:14px;color:#a5b4fc;margin:14px 0 0}
#articleBody .intro{background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:28px;margin:6px 0 26px;display:grid;grid-template-columns:132px 1fr;gap:28px;align-items:center}
#articleBody .cover{background-image:url(assets/capa-quando-e-melhor-com-ia.jpg);background-size:cover;background-position:center;background-repeat:no-repeat;aspect-ratio:520/834;flex:none}
#articleBody .intro .cover{width:132px;border-radius:6px;box-shadow:0 14px 30px -14px rgba(15,23,42,.55)}
#articleBody .intro .t{font-family:var(--serif);font-size:23px;font-weight:600;color:var(--ink);line-height:1.25;margin:0 0 6px}
#articleBody .intro .s{font-family:var(--sans);font-size:15px;color:var(--muted);line-height:1.5;margin:0 0 14px}
#articleBody .intro dl{margin:0;font-family:var(--sans);font-size:14px;display:grid;grid-template-columns:auto 1fr;gap:5px 14px}
#articleBody .intro dt{color:var(--faint);font-weight:600;letter-spacing:.04em;text-transform:uppercase;font-size:11px;padding-top:2px}
#articleBody .intro dd{margin:0;color:var(--ink-body)}
#articleBody .intro .src{color:var(--brand);text-decoration:none;font-weight:600;
  display:inline-flex;align-items:center;gap:5px;border-bottom:1px solid transparent}
#articleBody .intro .src:hover{border-bottom-color:var(--brand)}
#articleBody .intro .src:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:3px}
#articleBody .intro .src svg{width:13px;height:13px;flex:none}
#articleBody footer{padding:60px 0 90px;font-family:var(--sans);font-size:14px;color:var(--faint)}
#articleBody #legend{position:fixed;left:24px;bottom:24px;z-index:5;background:rgba(255,255,255,.94);
  border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-family:var(--sans);
  font-size:12px;line-height:1.5;box-shadow:0 6px 20px -8px rgba(15,23,42,.2);
  opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s;max-width:190px}
#articleBody #legend.on{opacity:1;transform:none}
#articleBody #legend b{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);margin:0 0 4px}
#articleBody #legend b i{width:16px;height:3px;border-radius:2px;display:block}
#articleBody #legend span{color:var(--muted);display:block;margin:0 0 10px}
#articleBody #legend span:last-child{margin:0}
#articleBody .node, #articleBody .hero>*{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease}
#articleBody .node.seen, #articleBody .hero>.seen{opacity:1;transform:none}
@media (max-width:860px){
#articleBody{--rail:44px}
#articleBody{font-size:18px}
#articleBody .wrap{padding:0 20px}
#articleBody .pair, #articleBody .grid2{grid-template-columns:1fr}
#articleBody .close{grid-template-columns:1fr;padding:32px}
#articleBody .intro{grid-template-columns:1fr;gap:20px;padding:24px}
#articleBody .close .cover{width:150px}
#articleBody #legend{display:none}
#articleBody header.hero{padding:86px 0 56px}
#articleBody section.node{padding:56px 0}
}
@media (prefers-reduced-motion:reduce){
#articleBody *{transition:none!important;animation:none!important}
#articleBody .node, #articleBody .hero>*{opacity:1;transform:none}
}

/* Rolagem suave: no artigo autônomo era declarada em <html>; aqui o elemento que
   de fato rola é a própria seção — é a ÚNICA regra que fica em #tab-articles. */
#tab-articles{ scroll-behavior:smooth }
@media (prefers-reduced-motion:reduce){ #tab-articles{ scroll-behavior:auto } }

/* A legenda flutuante é position:fixed; dentro do Hub precisa começar
   depois da barra lateral, que mede 5rem (md) e 16rem (lg). */
@media (min-width:768px){ #articleBody #legend{ left:calc(5rem + 24px) } }
@media (min-width:1024px){ #articleBody #legend{ left:calc(16rem + 24px) } }