/* =========================================================
   SG System · guia.css — folha compartilhada das páginas de
   conteúdo (/ia/ e guias). Marca v2: cores e fontes vêm de
   /assets/tokens.css (fonte única) — aqui só a ponte + layout
   editorial de artigo. Nunca colar hex de marca neste arquivo.
   ========================================================= */
:root{
  --c1:var(--brand-cyan);    /* #359AD1 */
  --c2:var(--primary-500);   /* #4E7CD2 */
  --c3:var(--brand-indigo);  /* #665ED2 */
  --c4:var(--accent-500);    /* #843AD3 */
  --ink:var(--primary-900);  /* #001A63 navy */
  --x1:#8F2CD3;              /* stops do símbolo (v2) */
  --x2:#339DD1;
  --warm:var(--highlight);   /* âmbar #FFB020 — com parcimônia */

  --grad:var(--brand-gradient);
  --grad-soft:linear-gradient(115deg,var(--x2),var(--x1));

  --paper:#fbfbfe;
  --paper-2:#f3f4fb;
  --line:#e4e6f2;
  --text:#1a2238;
  --muted:#5b6480;
  --muted-2:#8a91a8;

  --ink-text:#e8ebfb;
  --ink-muted:#9fb0e6;
  --ink-line:rgba(255,255,255,.12);

  --maxw:1180px;
  --readw:760px;                 /* medida de leitura do artigo */
  --pad:clamp(22px,5vw,80px);
  --r:18px;

  --f-display:var(--font-editorial); /* Fraunces */
  --f-ui:var(--font-sans);           /* Exo 2 */
  --f-mono:var(--font-mono);         /* Space Mono */
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--f-ui);background:var(--paper);color:var(--text);
  line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--c3);color:#fff}
a{color:inherit;text-decoration:none}
img,svg{display:block}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
.section{padding-block:clamp(56px,8vw,110px);position:relative}

.kicker{
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;
  color:var(--c4);display:inline-flex;align-items:center;gap:.7em;
}
.kicker::before{content:"";width:26px;height:1px;background:var(--c4);opacity:.6}
.dark .kicker{color:var(--c1)}
.dark .kicker::before{background:var(--c1)}

.gtext{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.atext{color:var(--warm);-webkit-text-fill-color:var(--warm)}

h1,h2,h3{font-family:var(--f-display);font-weight:400;line-height:1.08;letter-spacing:-.015em}
.dark{background:var(--ink);color:var(--ink-text)}
.dark h1,.dark h2,.dark h3{color:#fff}
.lead{font-size:clamp(1.05rem,1.5vw,1.28rem);color:var(--muted);max-width:62ch;font-weight:330}
.dark .lead{color:var(--ink-muted)}
em{font-style:italic}

/* ---------- botões ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--f-ui);font-weight:600;font-size:.98rem;
  padding:.95em 1.7em;border-radius:100px;background:var(--grad);color:#fff;
  box-shadow:0 10px 30px -8px rgba(102,94,210,.55);
  transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;border:0;cursor:pointer;
}
.btn:hover{transform:translateY(-3px);box-shadow:0 18px 40px -10px rgba(132,58,211,.6);filter:saturate(1.1)}
.btn svg{width:1.05em;height:1.05em}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.dark .btn-ghost{color:var(--ink-text);box-shadow:inset 0 0 0 1.5px var(--ink-line)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1.5px var(--c3);transform:translateY(-3px)}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;padding:18px var(--pad);
  backdrop-filter:saturate(180%) blur(14px);background:rgba(251,251,254,.72);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s,padding .3s;
}
.nav.scrolled{border-color:var(--line);padding-block:12px}
.brand{display:flex;align-items:center;gap:11px}
.brand .mark{width:34px;height:34px}
.brand .wordmark{font-family:var(--f-ui);font-weight:700;font-size:1.28rem;letter-spacing:-.01em;color:var(--ink)}
.brand .wordmark span{font-weight:300}
.nav .nav-cta{display:flex;align-items:center;gap:18px}
.nav .nav-cta a.txt{font-size:.92rem;font-weight:500;color:var(--muted)}
.nav .nav-cta a.txt:hover{color:var(--ink)}
@media(max-width:680px){.nav .nav-cta a.txt{display:none}}
.sg-grad-stop-a{stop-color:var(--x1)}
.sg-grad-stop-b{stop-color:var(--x2)}

/* ---------- cabeçalho do artigo ---------- */
.ga-hero{padding:calc(96px + clamp(30px,5vw,64px)) 0 clamp(30px,4vw,52px);position:relative;overflow:hidden}
.ga-hero::before{
  content:"";position:absolute;width:60vw;height:60vw;right:-22vw;top:-30vw;pointer-events:none;
  background:radial-gradient(circle,rgba(132,58,211,.20) 0%,rgba(132,58,211,0) 62%);
}
.ga-hero .wrap{position:relative;z-index:1}
.crumbs{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;color:var(--muted-2);margin-bottom:1.6em}
.crumbs a:hover{color:var(--c3)}
.crumbs span{opacity:.6;padding-inline:.45em}
.ga-hero h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:350;max-width:20ch;margin:.35em 0 .5em}
.ga-hero .lead{font-size:clamp(1.08rem,1.6vw,1.35rem)}
.ga-meta{
  margin-top:clamp(24px,3vw,34px);padding-top:18px;border-top:1px solid var(--line);
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.06em;color:var(--muted-2);
  display:flex;gap:10px 26px;flex-wrap:wrap;
}

/* ---------- corpo do artigo ---------- */
.ga-body{padding-block:clamp(14px,2vw,26px) clamp(50px,7vw,90px)}
.ga-body .wrap{max-width:calc(var(--readw) + var(--pad) * 2)}
.ga-body h2{
  font-size:clamp(1.6rem,3vw,2.3rem);font-weight:360;letter-spacing:-.02em;
  margin:clamp(44px,5vw,68px) 0 .5em;
}
.ga-body h3{
  font-family:var(--f-ui);font-weight:700;font-size:1.14rem;letter-spacing:0;line-height:1.35;
  margin:clamp(28px,3vw,38px) 0 .35em;
}
.ga-body p{margin-bottom:1.05em;font-size:1.04rem;color:var(--text)}
.ga-body p.sub{color:var(--muted)}
.ga-body a:not(.btn){color:var(--c4);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.ga-body a:not(.btn):hover{color:var(--c3)}
.ga-body ul,.ga-body ol{margin:0 0 1.3em 0;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:.6em}
.ga-body ul li{position:relative;padding-left:22px;color:var(--text)}
.ga-body ul li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--grad)}
.ga-body ol{counter-reset:gaol}
.ga-body ol li{position:relative;padding-left:34px;counter-increment:gaol}
.ga-body ol li::before{
  content:counter(gaol);position:absolute;left:0;top:.05em;
  width:24px;height:24px;border-radius:8px;background:var(--grad);color:#fff;
  font-family:var(--f-mono);font-size:.72rem;display:flex;align-items:center;justify-content:center;
}
.ga-body strong{font-weight:700}
.ga-body blockquote{
  margin:clamp(26px,3vw,36px) 0;padding-left:clamp(18px,2.4vw,26px);
  border-left:3px solid;border-image:var(--grad) 1;
  font-family:var(--f-display);font-weight:340;font-size:clamp(1.15rem,2vw,1.5rem);line-height:1.3;
}

/* índice do artigo */
.toc{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(20px,2.6vw,28px);margin:clamp(26px,3vw,36px) 0;
}
.toc .t-lbl{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--c4)}
.toc ol{margin:.9em 0 0;gap:.45em}
.toc ol li{padding-left:0;counter-increment:none}
.toc ol li::before{display:none}
.toc a{color:var(--text)!important;font-weight:500!important;text-decoration:none!important}
.toc a:hover{color:var(--c3)!important}

/* caixa de destaque */
.callout{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(22px,2.8vw,30px);margin:clamp(28px,3vw,40px) 0;position:relative;overflow:hidden;
  box-shadow:0 24px 54px -40px rgba(0,26,99,.4);
}
.callout::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad)}
.callout .c-lbl{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--c4);display:block;margin-bottom:.6em}
.callout p:last-child{margin-bottom:0}

/* tabela simples */
.ga-table{width:100%;border-collapse:collapse;margin:clamp(24px,3vw,34px) 0;font-size:.97rem}
.ga-table th,.ga-table td{text-align:left;padding:.85em 1em;border-bottom:1px solid var(--line);vertical-align:top}
.ga-table th{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);font-weight:400}
.ga-scroll{overflow-x:auto}

/* ---------- FAQ ---------- */
.faq-sec{background:var(--paper-2);border-block:1px solid var(--line)}
.faq{margin-top:clamp(30px,4vw,44px);max-width:820px;display:flex;flex-direction:column;gap:12px}
.faq details{border:1px solid var(--line);border-radius:var(--r);background:var(--paper);padding:2px 22px}
.faq summary{cursor:pointer;list-style:none;padding:20px 0;font-family:var(--f-ui);font-weight:700;font-size:1.05rem;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-ui);font-size:1.5rem;color:var(--c4);line-height:1;flex:none}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 22px;color:var(--muted);font-size:.98rem;line-height:1.65}

/* ---------- cards (hub e "leia também") ---------- */
.gcards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:clamp(28px,3.6vw,42px)}
@media(max-width:860px){.gcards{grid-template-columns:1fr}}
.gcard{
  border:1px solid var(--line);border-radius:var(--r);background:var(--paper);
  padding:clamp(22px,2.6vw,30px);display:flex;flex-direction:column;gap:.5em;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.gcard:hover{transform:translateY(-4px);box-shadow:0 24px 48px -32px rgba(0,26,99,.42);border-color:var(--c3)}
.gcard .g-lbl{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--c4)}
.gcard h3{font-family:var(--f-ui);font-weight:700;font-size:1.1rem;color:var(--text);letter-spacing:0;line-height:1.3}
.gcard p{font-size:.93rem;color:var(--muted)}
.gcard .g-go{margin-top:auto;padding-top:.8em;font-size:.9rem;font-weight:600;color:var(--c3)}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--ink);text-align:center}
.cta .glow{position:absolute;inset:0;z-index:0;pointer-events:none}
.cta .glow::before{
  content:"";position:absolute;width:92vw;height:92vw;left:50%;top:42%;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(132,58,211,.42) 0%,rgba(132,58,211,0) 56%);
}
.cta .wrap{position:relative;z-index:1}
.cta h2{font-size:clamp(1.9rem,4.2vw,3.2rem);font-weight:340;max-width:22ch;margin:.3em auto .1em;color:#fff}
.cta .lead{margin:1em auto 0;max-width:56ch}
.cta .actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:2.2em}

/* ---------- footer ---------- */
.footer{background:#00114a;color:var(--ink-muted);padding:38px var(--pad)}
.footer .inner{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.footer .brand .wordmark{color:#fff;font-size:1.1rem}
.footer .mark{width:28px;height:28px}
.footer small{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.04em;opacity:.8}
.footer .flinks{display:flex;gap:16px;flex-wrap:wrap;font-size:.85rem}
.footer .flinks a:hover{color:#fff}

/* ---------- reveal on scroll ---------- */
@media (prefers-reduced-motion:no-preference){
  @supports (animation-timeline: view()){
    .reveal{animation:reveal linear both;animation-timeline:view();animation-range:entry 0% cover 24%}
    @keyframes reveal{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
  }
}