/* aprenda.css — estilo compartilhado do hub "Aprenda".
   Reusa os tokens de marca do portal (navy/ciano) + layout de hub e de artigo.
   Nomes de arquivo estáveis → servido com no-cache (ver _headers). */

:root{
  --navy-900:#0b1220; --navy-800:#0f2540; --navy-700:#102a45; --navy-600:#123b66;
  --cyan:#14b8d4; --cyan-bright:#19d3e6; --blue:#2f6fed; --paper:#e7eefb; --ink:#12263a;
  --bg:var(--paper); --bg-tint:#eaf1f8; --surface:#fff; --surface-2:#f2f6fb;
  --border:#d7e2ee; --border-strong:#c2d2e2; --text:var(--ink); --text-soft:#4a5f75;
  --text-mute:#7189a0; --accent:#0f97b0; --accent-ink:#0a3a56; --ok:#1a8f6a;
  --ring:rgba(20,184,212,.45); --shadow:0 1px 2px rgba(16,42,69,.06),0 12px 34px -14px rgba(16,42,69,.28);
  color-scheme:light;
  --_d:"Bahnschrift","DIN Alternate","Segoe UI Variable Display","Segoe UI",system-ui,sans-serif;
  --tc:#2f6fed; --rm:#0f97b0; --amb:#6a4fc9;
}
@media (prefers-color-scheme:dark){:root{
  --bg:var(--navy-900); --bg-tint:#0d1a2e; --surface:#101f36; --surface-2:#142743;
  --border:#21374f; --border-strong:#2c4763; --text:#eaf1f8; --text-soft:#a9bed4;
  --text-mute:#6f89a3; --accent:var(--cyan-bright); --accent-ink:#d6f6fc; --ok:#38d39b;
  --ring:rgba(25,211,230,.5); --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 44px -18px rgba(0,0,0,.6);
  color-scheme:dark; --tc:#5b8cff; --rm:#35c8e0; --amb:#a08bef;}}
:root[data-theme="light"]{--bg:var(--paper);--bg-tint:#eaf1f8;--surface:#fff;--surface-2:#f2f6fb;--border:#d7e2ee;--border-strong:#c2d2e2;--text:var(--ink);--text-soft:#4a5f75;--text-mute:#7189a0;--accent:#0f97b0;--accent-ink:#0a3a56;--ok:#1a8f6a;--ring:rgba(20,184,212,.45);--shadow:0 1px 2px rgba(16,42,69,.06),0 12px 34px -14px rgba(16,42,69,.28);color-scheme:light;--tc:#2f6fed;--rm:#0f97b0;--amb:#6a4fc9;}
:root[data-theme="dark"]{--bg:var(--navy-900);--bg-tint:#0d1a2e;--surface:#101f36;--surface-2:#142743;--border:#21374f;--border-strong:#2c4763;--text:#eaf1f8;--text-soft:#a9bed4;--text-mute:#6f89a3;--accent:var(--cyan-bright);--accent-ink:#d6f6fc;--ok:#38d39b;--ring:rgba(25,211,230,.5);--shadow:0 1px 2px rgba(0,0,0,.4),0 18px 44px -18px rgba(0,0,0,.6);color-scheme:dark;--tc:#5b8cff;--rm:#35c8e0;--amb:#a08bef;}

*{box-sizing:border-box}
body{margin:0;overflow-x:clip;background:radial-gradient(1100px 520px at 84% -8%,color-mix(in srgb,var(--cyan) 14%,transparent),transparent 58%),radial-gradient(1000px 640px at 8% -4%,color-mix(in srgb,var(--blue) 12%,transparent),transparent 56%),var(--bg);color:var(--text);font-family:"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px;position:relative}
.display{font-family:var(--_d)}
.eyebrow{font:600 12px/1 inherit;letter-spacing:.18em;text-transform:uppercase;color:var(--text-mute)}
a{color:var(--blue)}

/* watermark estática (sem JS) */
.watermark{position:fixed;z-index:-1;pointer-events:none;right:-12vmin;top:50%;transform:translateY(-50%) rotate(-4deg);width:min(82vmin,760px);aspect-ratio:1;opacity:.05}
.watermark svg{width:100%;height:100%;display:block}
@media (prefers-color-scheme:dark){.watermark{opacity:.07}}
:root[data-theme="dark"] .watermark{opacity:.07}
:root[data-theme="light"] .watermark{opacity:.05}
@media (max-width:820px){.watermark{right:-26vmin;opacity:.045}}

/* header / footer (iguais ao portal) */
header.top{position:sticky;top:0;z-index:20;backdrop-filter:saturate(1.4) blur(10px);background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--border)}
.top .wrap{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.brand .mark{width:34px;height:34px;flex:none}
.wordmark{font:700 19px/1 var(--_d);letter-spacing:.14em}
.wordmark b{color:var(--accent);font-weight:700}
.top nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.nav-link{color:var(--text-soft);text-decoration:none;padding:8px 12px;border-radius:9px;font-size:14px}
.nav-link:hover{color:var(--text);background:var(--surface-2)}
.nav-link[aria-current="page"]{color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font:600 14px/1 inherit;text-decoration:none;border-radius:10px;padding:10px 16px;border:1px solid transparent;transition:transform .12s ease,box-shadow .12s ease,background .12s ease}
.btn:focus-visible{outline:3px solid var(--ring);outline-offset:2px}
.btn-primary{background:var(--accent);color:#04222e;box-shadow:0 8px 20px -10px var(--accent)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{border-color:var(--border-strong);color:var(--text);background:var(--surface)}
.btn-ghost:hover{background:var(--surface-2)}

footer{margin-top:56px;border-top:1px solid var(--border);padding:26px 0 50px;color:var(--text-mute);font-size:13px}
footer .wrap{display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center}
footer a{color:var(--text-soft);text-decoration:none}
footer a:hover{color:var(--text)}
.disclaimer{flex-basis:100%;color:var(--text-mute);font-size:12px;line-height:1.5}

/* chips de modalidade */
.chip{display:inline-block;font:700 11px/1.6 inherit;letter-spacing:.04em;padding:2px 9px;border-radius:999px;vertical-align:middle}
.chip.tc{color:#fff;background:var(--tc)}
.chip.rm{color:var(--rm);border:1.5px solid var(--rm)}
.chip.amb{color:#fff;background:var(--amb)}
@media (prefers-color-scheme:dark){.chip.tc,.chip.amb{color:#08131f}}
:root[data-theme="dark"] .chip.tc,:root[data-theme="dark"] .chip.amb{color:#08131f}

/* ── HUB (índice) ─────────────────────────────────────────────────────────── */
.hub-hero{padding:60px 0 20px}
.hub-hero h1{font:700 clamp(32px,5vw,48px)/1.04 var(--_d);letter-spacing:-.01em;margin:14px 0 0;text-wrap:balance;max-width:18ch}
.hub-hero h1 .accent{color:var(--accent)}
.hub-hero .lede{margin:18px 0 0;font-size:clamp(16px,1.6vw,19px);color:var(--text-soft);max-width:56ch}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:color-mix(in srgb,var(--accent) 14%,var(--surface));color:var(--accent-ink);border:1px solid color-mix(in srgb,var(--accent) 32%,transparent);font-size:12.5px;font-weight:600}
.steps{display:flex;flex-wrap:wrap;gap:10px 22px;margin:26px 0 0;padding:0;list-style:none}
.steps li{display:flex;align-items:center;gap:10px;color:var(--text-soft);font-size:14.5px}
.steps b{color:var(--text)}
.steps .n{width:24px;height:24px;flex:none;display:grid;place-items:center;border-radius:50%;background:color-mix(in srgb,var(--accent) 16%,var(--surface));color:var(--accent-ink);font:700 13px/1 var(--_d);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent)}

section{padding:34px 0}
.sec-head{margin-bottom:20px}
.sec-head h2{font:700 22px/1.1 var(--_d);letter-spacing:.01em;margin:6px 0 0}

.pillars{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.pillar{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow)}
.pillar h3{font:700 17px/1.15 var(--_d);margin:0 0 6px;letter-spacing:.01em;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.pillar .n{font:700 14px/1 var(--_d);color:var(--accent);font-variant-numeric:tabular-nums}
.pillar p{margin:0;color:var(--text-soft);font-size:14.5px}

.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.acard{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;text-decoration:none;color:inherit;box-shadow:var(--shadow);transition:transform .14s ease,border-color .14s ease}
.acard:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 40%,var(--border))}
.acard .kick{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.acard h3{font:700 16.5px/1.2 var(--_d);margin:2px 0 0;letter-spacing:.005em}
.acard p{margin:0;color:var(--text-soft);font-size:14px}
.acard .more{margin-top:auto;color:var(--accent);font-weight:700;font-size:13.5px}
.acard .more::after{content:" →"}

/* ── ARTIGO ───────────────────────────────────────────────────────────────── */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-mute)}
.crumb a{color:var(--text-soft);text-decoration:none}
.crumb a:hover{color:var(--text)}
.crumb span{margin:0 6px;opacity:.6}
article.doc{max-width:720px;margin:0 auto;padding:8px 0 0}
.doc-head{padding:14px 0 6px}
.doc-head .kick{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.doc-head .kick .meta{color:var(--text-mute);font-size:13px}
.doc-head h1{font:700 clamp(27px,4vw,38px)/1.08 var(--_d);letter-spacing:-.01em;margin:0;text-wrap:balance}
.doc-head .standfirst{font-size:18px;color:var(--text-soft);margin:16px 0 0}
.doc-body{font-size:17px;line-height:1.72}
.doc-body p{margin:18px 0;max-width:68ch}
.doc-body h2{font:700 22px/1.2 var(--_d);color:var(--text);margin:36px 0 0;letter-spacing:.005em}
.doc-body strong{color:var(--text)}
.doc-body em{color:var(--text-soft)}

.figure{margin:26px 0;border:1px solid var(--border);border-radius:14px;overflow:hidden;background:var(--surface);box-shadow:var(--shadow)}
.figure img{display:block;width:100%;height:auto}
.figure figcaption{padding:10px 16px;font-size:13px;color:var(--text-mute);border-top:1px solid var(--border)}

.scrollx{overflow-x:auto;margin:24px 0;border:1px solid var(--border);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:440px}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--border)}
th{background:var(--surface-2);color:var(--text-soft);font-weight:700;font-size:12.5px;text-transform:uppercase;letter-spacing:.05em}
tr:last-child td{border-bottom:0}
td{font-variant-numeric:tabular-nums}

.errbox{background:var(--surface-2);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:12px;padding:16px 20px;margin:28px 0}
.errbox h2{margin:0 0 4px !important;font-size:16px !important;color:var(--text)}
.errbox ul{margin:8px 0 0;padding-left:20px}
.errbox li{margin:6px 0;color:var(--text-soft)}

.cta-box{margin:34px 0 0;background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 12%,var(--surface)),var(--surface));border:1px solid color-mix(in srgb,var(--accent) 34%,var(--border));border-radius:16px;padding:22px 24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cta-box .t{font:700 17px/1.25 var(--_d);margin:0}
.cta-box p{margin:4px 0 0;color:var(--text-soft);font-size:14px;max-width:44ch}
.cta-box .btn{margin-left:auto}
.cta-box .btn::after{content:"→"}

.related{margin:40px 0 0;padding-top:22px;border-top:1px solid var(--border)}
.related h2{font:700 15px/1 var(--_d);letter-spacing:.06em;text-transform:uppercase;color:var(--text-mute);margin:0 0 12px}
.related a{display:block;color:var(--text-soft);text-decoration:none;padding:7px 0}
.related a:hover{color:var(--accent)}

.note-edu{margin:30px auto 0;max-width:720px;color:var(--text-mute);font-size:12.5px;line-height:1.5;border-top:1px solid var(--border);padding-top:16px}

@media (max-width:820px){
  .pillars{grid-template-columns:1fr}
  .articles{grid-template-columns:1fr}
  .top nav .nav-link{display:none}
  .cta-box .btn{margin-left:0}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important}}