/* ===========================================================
   CS Academy — /artigos  (biblioteca + leitura técnica)
   Mesma identidade do site (styles.css): fundo escuro, laranja,
   Oswald (títulos) · Barlow (texto) · IBM Plex Mono (metadados e código).
   As classes antigas (.site-head, .post-head, .toc, .course-cta…) continuam
   valendo: o artigo legado em HTML usa este mesmo arquivo.
   Deploy: /assets/blog.css
   =========================================================== */

*{box-sizing:border-box}
img{max-width:100%;height:auto;display:block}
[hidden]{display:none!important}

:root{
  --bg:#0a0a0b;
  --bg-2:#111011;
  --panel:#161514;
  --panel-2:#1c1a17;
  --ink:#f5f2ec;          /* títulos */
  --text:#d9d3c9;         /* texto corrido (13:1 sobre --bg) */
  --muted:#a39c92;        /* metadados (6.9:1 sobre --bg, 6:1 sobre --panel) */
  --line:#2b2723;
  --line-2:#3d3731;
  --orange:#f47c1c;
  --orange-bright:#ff9330;
  --ink-on-orange:#120a02;
  --link:#ffa45c;
  --mesh:rgba(244,124,28,.045);
  --good:#4cc47e;
  --warn:#eab54e;
  --info:#82b8ec;
  --bad:#f08072;
  --code-bg:#0e0d0d;
  --code-head:#151413;
  --code-line:#2b2723;
  --maxread:46rem;
  --head-h:62px;
  --font-ui:"Barlow",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:var(--font-ui);
  --font-display:"Oswald","Arial Narrow",sans-serif;
  --font-mono:"IBM Plex Mono","SF Mono",ui-monospace,Consolas,monospace;
}

html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--head-h) + 16px)}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-ui);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
::selection{background:rgba(244,124,28,.35);color:#fff}
a{color:var(--link);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--orange-bright)}
:focus-visible{outline:2px solid var(--orange-bright);outline-offset:3px}
.wrap{max-width:74rem;margin:0 auto;padding:0 24px}
@media(max-width:640px){.wrap{padding:0 16px}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:fixed;left:12px;top:-60px;z-index:100;background:var(--orange);color:var(--ink-on-orange);padding:10px 14px;font-family:var(--font-mono);font-size:.8rem;text-decoration:none}
.skip:focus{top:12px;color:var(--ink-on-orange)}
.ico{width:1em;height:1em;flex-shrink:0;vertical-align:-.14em}
.eyebrow{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--orange);margin:0 0 12px}
.linkbtn{background:none;border:0;padding:0;font:inherit;color:var(--link);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
main{min-height:60vh}

/* textura hexagonal do site, só nas áreas de destaque */
.post-hero,.lib-hero,.lab-card,.cv{
  background-image:
    repeating-linear-gradient(60deg,var(--mesh) 0 1px,transparent 1px 36px),
    repeating-linear-gradient(-60deg,var(--mesh) 0 1px,transparent 1px 36px),
    repeating-linear-gradient(0deg,var(--mesh) 0 1px,transparent 1px 31px);
}

/* ---------- header ---------- */
.site-head{background:rgba(10,10,11,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--ink);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.site-head .bar{display:flex;align-items:center;justify-content:space-between;height:var(--head-h);gap:18px}
.site-head .brand{display:inline-flex;align-items:center;flex-shrink:0}
.site-head .brand-logo{display:block;height:40px;width:auto}
.site-head nav a{color:var(--muted);text-decoration:none;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;font-family:var(--font-mono)}
.site-head nav a:hover,.site-head nav a[aria-current]{color:var(--ink)}
/* nav do artigo legado (sem menu celular) */
.site-head .bar>nav:not(.bnav){display:flex;align-items:center;gap:22px}
@media(max-width:560px){.site-head .bar>nav:not(.bnav) a:not(.btn-nav){display:none}}
.bnav{flex:1;display:flex;justify-content:center}
.bnav ul,.bh-menu ul{list-style:none;margin:0;padding:0}
.bnav ul{display:flex;gap:24px}
.bnav a{position:relative;padding:8px 0}
.bnav a[aria-current]{color:var(--orange-bright)}
.bnav a::after{content:"";position:absolute;left:0;right:100%;bottom:2px;height:1px;background:var(--orange);transition:right .25s ease}
.bnav a:hover::after,.bnav a[aria-current]::after{right:0}
.bh-actions{display:flex;align-items:center;gap:10px}
.site-head .btn-nav{display:inline-flex;align-items:center;min-height:38px;background:var(--orange);color:var(--ink-on-orange);padding:0 15px;font-family:var(--font-display);font-weight:600;font-size:.86rem;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;transform:skewX(-9deg);white-space:nowrap}
.site-head .btn-nav:hover{background:var(--orange-bright);color:var(--ink-on-orange)}
.bh-toggle{width:44px;height:44px;border:1px solid var(--line);background:var(--panel);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0}
.bh-toggle i{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s,opacity .2s}
.bh-toggle[aria-expanded="true"] i:nth-of-type(1){transform:translateY(7px) rotate(45deg)}
.bh-toggle[aria-expanded="true"] i:nth-of-type(2){opacity:0}
.bh-toggle[aria-expanded="true"] i:nth-of-type(3){transform:translateY(-7px) rotate(-45deg)}
.bh-menu{border-top:1px solid var(--line);background:var(--bg);padding:6px 24px 18px}
.bh-menu a{display:block;padding:14px 2px;border-bottom:1px solid var(--line);font-family:var(--font-display)!important;font-size:1.1rem!important;letter-spacing:.03em!important;color:var(--ink)!important}
.bh-menu a[aria-current]{color:var(--orange-bright)!important}
@media(max-width:1080px){.bnav{display:none}}
@media(min-width:1081px){.bh-toggle,.bh-menu{display:none!important}}
@media(max-width:380px){.site-head .btn-nav{display:none}}
.read-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.read-progress span{display:block;height:100%;background:var(--orange);transform-origin:0 50%;transform:scaleX(0)}

/* ---------- footer ---------- */
.site-foot{background:var(--bg);color:var(--muted);border-top:1px solid var(--line);padding:34px 0;font-family:var(--font-mono);font-size:.78rem;margin-top:72px}
.site-foot .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.site-foot a,.site-foot b{color:var(--link)}
.site-foot--full{padding:52px 0 28px;font-family:var(--font-ui);font-size:.92rem;margin-top:0}
.site-foot--full .wrap{display:block}
.sf-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:32px}
@media(max-width:900px){.sf-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.sf-grid{grid-template-columns:1fr}}
.sf-brand p{margin:12px 0 0;max-width:30ch}
.sf-brand .brand-logo{height:40px;width:auto}
.sf-yt{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-family:var(--font-mono);font-size:.76rem;color:var(--ink)!important;text-decoration:none;border:1px solid var(--line);padding:10px 12px;background:var(--panel)}
.sf-yt .ico{width:18px;height:18px;color:#ff4d4d}
.sf-yt:hover{border-color:var(--orange)}
.sf-title{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--orange);margin:0 0 12px}
.site-foot--full nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.site-foot--full nav a{color:var(--muted);text-decoration:none;display:inline-block;padding:4px 0}
.site-foot--full nav a:hover{color:var(--ink)}
.sf-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid var(--line);margin-top:36px;padding-top:20px;font-family:var(--font-mono);font-size:.72rem}

/* ---------- breadcrumb ---------- */
.crumbs{margin:0 0 18px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px 6px;margin:0;padding:0;font-family:var(--font-mono);font-size:.74rem;color:var(--muted);letter-spacing:.02em}
.crumbs li{min-width:0}
.crumbs li:not(:last-child)::after{content:"/";margin-left:6px;color:var(--line-2)}
.crumbs a{color:var(--muted);text-decoration:none;display:inline-block;padding:4px 0}
.crumbs a:hover{color:var(--ink)}
.crumbs [aria-current] span{color:var(--text);display:inline-block;padding:4px 0;max-width:32ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}

/* ---------- selos: nível e laboratório ---------- */
.lvl{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:.74rem;color:var(--text);white-space:nowrap}
.lvl-bars{display:inline-flex;align-items:flex-end;gap:2px;height:12px}
.lvl-bars i{display:block;width:4px;background:var(--line-2)}
.lvl-bars i:nth-child(1){height:5px}.lvl-bars i:nth-child(2){height:8px}.lvl-bars i:nth-child(3){height:12px}
.lvl[data-lvl="1"] .lvl-bars i:nth-child(-n+1){background:var(--good)}
.lvl[data-lvl="2"] .lvl-bars i:nth-child(-n+2){background:var(--warn)}
.lvl[data-lvl="3"] .lvl-bars i{background:var(--bad)}
.badge-lab{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--orange-bright);border:1px solid rgba(244,124,28,.45);background:rgba(244,124,28,.08);padding:3px 8px;white-space:nowrap}
.badge-soon{display:inline-block;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--warn);border:1px solid rgba(234,181,78,.45);padding:2px 7px;margin-left:6px;vertical-align:1px}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.chips li{font-family:var(--font-mono);font-size:.74rem;color:var(--text);border:1px solid var(--line-2);background:var(--bg-2);padding:4px 9px}

/* =========================================================
   BIBLIOTECA (/artigos/ e categorias)
   ========================================================= */
.lib-hero{border-bottom:1px solid var(--line);padding:52px 0 44px}
.lib-hero-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:48px;align-items:center}
@media(max-width:900px){.lib-hero-grid{grid-template-columns:1fr}.lib-term{display:none}}
.lib-hero h1,.list-head h1{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:.01em;line-height:1.04;color:var(--ink);font-size:clamp(2rem,4.6vw,3.1rem);margin:0;text-wrap:balance;overflow-wrap:break-word}
.list-lead{color:var(--text);font-size:1.08rem;line-height:1.6;margin:16px 0 0;max-width:44rem}
.lib-stats{list-style:none;display:flex;flex-wrap:wrap;gap:8px 24px;margin:22px 0 0;padding:0;font-family:var(--font-mono);font-size:.78rem;color:var(--muted)}
.lib-stats b{color:var(--orange-bright);font-weight:500;font-size:1rem;margin-right:4px}
.lib-term{background:rgba(17,16,17,.94);border:1px solid var(--line);border-left:3px solid var(--orange);padding:14px 16px 12px;font-family:var(--font-mono);font-size:.78rem;line-height:1.8;color:var(--ink)}
.lib-term p{margin:0}
.lib-term ul{list-style:none;margin:2px 0 4px;padding:0}
.lib-term li span{color:var(--muted)}
.lib-term a{color:var(--text);text-decoration:none}
.lib-term a:hover{color:var(--orange-bright)}
.lib-term b{color:var(--orange)}
.term-top{display:flex;align-items:center;gap:5px;margin-bottom:8px!important;color:var(--muted);font-size:.66rem}
.term-top i{width:8px;height:8px;border-radius:50%;background:var(--line-2);display:inline-block}
.term-top i:first-child{background:var(--orange)}
.term-top span{margin-left:8px}
.caret{display:inline-block;width:8px;height:14px;background:var(--orange);vertical-align:-2px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.lib-hero--cat{padding:32px 0 36px}
.lib-hero--cat h1{font-size:clamp(1.9rem,4vw,2.6rem)}
.cat-eyebrow{display:flex;align-items:center;gap:8px}
.cat-eyebrow .ico{width:16px;height:16px}

/* destaque */
.featured{padding:44px 0 8px}
.feat-card{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);background:var(--panel);border:1px solid var(--line);border-top:2px solid var(--orange)}
@media(max-width:860px){.feat-card{grid-template-columns:1fr}}
.feat-cover{display:block;min-height:100%;background:var(--bg-2)}
.feat-cover .cv{aspect-ratio:auto;height:100%;min-height:240px}
.feat-cover:has(picture),.feat-cover:has(img){display:flex;align-items:center;background-color:#0a0a0b;
  background-image:radial-gradient(ellipse 60% 55% at 92% 58%,rgba(244,124,28,.16),transparent 70%),
    repeating-linear-gradient(60deg,rgba(244,124,28,.07) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(-60deg,rgba(244,124,28,.07) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(0deg,rgba(244,124,28,.05) 0 1px,transparent 1px 35px)}
.feat-cover picture,.feat-cover img{display:block;width:100%;height:auto}
.feat-body{padding:28px 30px 30px;display:flex;flex-direction:column;gap:14px}
@media(max-width:640px){.feat-body{padding:20px 18px 22px}}
.feat-title{font-family:var(--font-display);font-weight:600;text-transform:uppercase;letter-spacing:.01em;font-size:clamp(1.4rem,2.6vw,1.9rem);line-height:1.12;margin:0;text-wrap:balance}
.feat-title a{color:var(--ink);text-decoration:none}
.feat-title a:hover{color:var(--orange-bright)}
.feat-excerpt{margin:0;color:var(--text);font-size:1rem}
.feat-lab{display:flex;align-items:flex-start;gap:9px;margin:0;font-family:var(--font-mono);font-size:.8rem;color:var(--ink);background:var(--bg-2);border:1px solid var(--line);padding:10px 12px}
.feat-lab .ico{color:var(--orange);margin-top:3px}
.btn-read{align-self:flex-start;display:inline-flex;align-items:center;gap:10px;min-height:44px;margin-top:4px;padding:0 20px;background:var(--orange);color:var(--ink-on-orange);font-family:var(--font-display);font-weight:600;font-size:.95rem;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;transform:skewX(-9deg)}
.btn-read>*{transform:skewX(9deg)}
.btn-read:hover{background:var(--orange-bright);color:var(--ink-on-orange)}

/* lista + filtros */
.lib{padding:44px 0 24px}
.lib-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.lib-head h2{font-family:var(--font-display);font-weight:600;text-transform:uppercase;font-size:1.6rem;color:var(--ink);margin:0}
.lib-count{font-family:var(--font-mono);font-size:.78rem;color:var(--muted);margin:0}
.filters{display:flex;flex-direction:column;gap:14px;padding:18px;background:var(--panel);border:1px solid var(--line);margin-bottom:26px}
.search{position:relative;max-width:40rem}
.search .ico{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);width:18px;height:18px}
.search input{width:100%;min-height:46px;padding:10px 14px 10px 42px;border:1px solid var(--line-2);border-radius:0;background:var(--bg);font:inherit;font-size:1rem;color:var(--ink)}
.search input::placeholder{color:#8a847b}
.search input:focus{outline:2px solid var(--orange);outline-offset:0;border-color:var(--orange)}
.f-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.f-label{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);min-width:5.5rem}
.chips-f,.segs{display:flex;flex-wrap:wrap;gap:8px}
.chip,.seg{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 12px;border:1px solid var(--line-2);background:var(--bg-2);color:var(--text);font-family:var(--font-mono);font-size:.76rem;cursor:pointer}
.chip span{color:var(--muted);font-size:.7rem}
.chip:hover:not(:disabled),.seg:hover{border-color:var(--orange);color:var(--ink)}
.chip[aria-pressed="true"],.seg[aria-pressed="true"]{border-color:var(--orange);background:rgba(244,124,28,.12);color:var(--ink)}
.chip[aria-pressed="true"] span{color:var(--orange-bright)}
.chip:disabled{opacity:.5;cursor:not-allowed}
.lab-toggle{display:inline-flex;align-items:center;gap:8px;min-height:36px;cursor:pointer;font-family:var(--font-mono);font-size:.76rem;color:var(--text)}
.lab-toggle input{width:18px;height:18px;accent-color:var(--orange);margin:0}
.lab-toggle span{display:inline-flex;align-items:center;gap:6px}
.lab-toggle .ico{color:var(--orange)}
.f-clear{margin-left:auto;min-height:36px;background:none;border:0;color:var(--link);font-family:var(--font-mono);font-size:.76rem;text-decoration:underline;text-underline-offset:3px;cursor:pointer}
@media(max-width:640px){.f-label{min-width:100%}.f-clear{margin-left:0}}
.empty{color:var(--muted);font-family:var(--font-mono);font-size:.9rem;padding:24px 0}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:20px;margin:0 0 28px}
@media(max-width:640px){.cards{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);display:flex;flex-direction:column;transition:border-color .15s,transform .15s;position:relative}
.card:hover{border-color:var(--line-2);transform:translateY(-2px)}
.card:focus-within{border-color:var(--orange)}
.card-cover{display:block;aspect-ratio:1200/630;overflow:hidden;background:var(--bg-2);border-bottom:1px solid var(--line)}
.card-cover picture{display:block;height:100%}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-cover img{transform:scale(1.03)}
@media(prefers-reduced-motion:reduce){.card-cover img{transition:none}.card:hover .card-cover img{transform:none}}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.card-cat{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--orange-bright);text-decoration:none;padding:4px 0;position:relative;z-index:2}
.card-cat:hover{text-decoration:underline}
.card-title{font-family:var(--font-ui);font-weight:600;font-size:1.16rem;line-height:1.3;margin:0;color:var(--ink)}
.card-title a{color:var(--ink);text-decoration:none}
.card-title a::after{content:"";position:absolute;inset:0;z-index:1}  /* card inteiro clicável */
.card-title a:hover{color:var(--orange-bright)}
.card-title a:focus-visible{outline:none}
.card-excerpt{color:var(--muted);font-size:.94rem;line-height:1.55;margin:0;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 14px;font-family:var(--font-mono);font-size:.74rem;color:var(--muted);margin-top:2px;padding-top:12px;border-top:1px solid var(--line)}
.card-meta>.lvl{margin-left:auto}
.card[data-featured]{display:none}
.is-filtering .card[data-featured]{display:flex}

/* capa padronizada gerada (quando o artigo não tem imagem própria) */
.cv{position:relative;width:100%;height:100%;aspect-ratio:2/1;background-color:#121110;overflow:hidden;
  background-image:radial-gradient(circle at 85% 70%,rgba(244,124,28,.18),transparent 55%),
    repeating-linear-gradient(60deg,var(--mesh) 0 1px,transparent 1px 36px),
    repeating-linear-gradient(-60deg,var(--mesh) 0 1px,transparent 1px 36px),
    repeating-linear-gradient(0deg,var(--mesh) 0 1px,transparent 1px 31px)}
.cv-path{position:absolute;left:16px;top:14px;font-family:var(--font-mono);font-size:.72rem;color:var(--muted)}
.cv-ico{position:absolute;right:8%;top:50%;transform:translateY(-50%);width:34%;height:auto;max-height:70%;color:var(--orange);opacity:.85;stroke-width:1.2}
.cv-lab{position:absolute;left:16px;bottom:14px;display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;color:var(--ink-on-orange);background:var(--orange);padding:4px 9px}
.cv-serie{position:absolute;left:16px;top:38px;right:45%;font-family:var(--font-display);font-size:1.15rem;text-transform:uppercase;letter-spacing:.02em;line-height:1.15;color:var(--ink)}

/* =========================================================
   ARTIGO
   ========================================================= */
.post-hero{border-bottom:1px solid var(--line);padding:30px 0 34px}
.post-head{max-width:60rem}
.post-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin:0 0 14px}
.post-cat{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--orange-bright);text-decoration:none;padding:4px 0}
.post-cat .ico{width:16px;height:16px}
.post-serie{font-family:var(--font-mono);font-size:.74rem;color:var(--muted);border-left:1px solid var(--line-2);padding-left:16px}
.post-head h1{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:.005em;line-height:1.08;color:var(--ink);font-size:clamp(1.75rem,3.6vw,2.6rem);margin:0;text-wrap:balance;overflow-wrap:break-word;max-width:28em}
.post-lead{font-size:1.16rem;line-height:1.6;color:var(--text);margin:16px 0 0;max-width:44rem}
.post-facts{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin:22px 0 0;padding:0;font-family:var(--font-mono);font-size:.78rem;color:var(--text)}
.post-facts li{display:inline-flex;align-items:center;gap:7px}
.post-facts .ico{color:var(--muted);width:15px;height:15px}
.post-meta{display:flex;flex-wrap:wrap;gap:6px 18px;margin:14px 0 0;font-family:var(--font-mono);font-size:.74rem;color:var(--muted)}
.post-meta .pm-author{color:var(--ink);font-weight:500}

/* capa do artigo legado */
.post-cover{margin:28px auto 0;max-width:64rem;padding:0 24px}
.post-cover img{width:100%;aspect-ratio:1200/630;object-fit:cover;border:1px solid var(--line)}

/* grade: texto + sumário à direita */
.post-grid{display:grid;grid-template-columns:minmax(0,1fr);margin-top:0;position:relative}
.post-body{max-width:var(--maxread);width:100%;margin:0 auto;min-width:0;padding-top:36px}
@media(min-width:1100px){
  .post-grid{grid-template-columns:minmax(0,var(--maxread)) 16rem;grid-template-areas:"body aside";justify-content:center;column-gap:64px;align-items:start}
  .post-body{grid-area:body;margin:0}
  .post-aside{grid-area:aside;position:sticky;top:calc(var(--head-h) + 28px);padding-top:40px;max-height:calc(100vh - var(--head-h) - 40px);overflow-y:auto;scrollbar-width:thin}
}

/* tipografia de leitura */
.post-body{font-family:var(--font-body);font-size:1.125rem;line-height:1.75;color:var(--text);overflow-wrap:break-word}
.post-body>*{margin:0 0 1.3em}
.post-body h2,.post-body h3,.post-body h4{font-family:var(--font-ui);line-height:1.25;color:var(--ink);position:relative}
.post-body h2{font-family:var(--font-display);font-weight:600;text-transform:uppercase;letter-spacing:.01em;font-size:clamp(1.5rem,2.6vw,1.85rem);line-height:1.15;margin:2.4em 0 .75em;padding-top:1.1em;border-top:1px solid var(--line)}
.post-body>h2:first-child{margin-top:0}
.post-body h3{font-weight:600;font-size:1.32rem;margin:1.9em 0 .6em}
.post-body h4{font-weight:600;font-size:1.12rem;margin:1.6em 0 .5em}
.post-body p{margin:0 0 1.2em}
.post-body a{color:var(--link)}
.post-body a:hover{color:var(--orange-bright)}
.post-body strong{font-weight:600;color:var(--ink)}
.post-body em{font-style:italic}
.post-body ul,.post-body ol{padding-left:1.4em}
.post-body li{margin:.45em 0;padding-left:.2em}
.post-body ul>li::marker{color:var(--orange)}
.post-body ol>li::marker{color:var(--orange);font-family:var(--font-mono);font-size:.9em}
.post-body blockquote{border-left:3px solid var(--line-2);margin-left:0;padding:.3em 0 .3em 1.1em;color:var(--muted)}
.post-body blockquote p:last-child{margin-bottom:0}
.post-body hr{border:0;border-top:1px solid var(--line);margin:2.5em 0}
.post-body img{margin:0 auto;border:1px solid var(--line)}
.post-body figure,.fig{margin:1.8em 0}
.post-body figcaption{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);margin-top:10px}

.hanchor{font-family:var(--font-mono);color:var(--muted);text-decoration:none;margin-left:.3em;opacity:0;transition:opacity .12s;font-size:.7em;vertical-align:middle}
.post-body h2:hover .hanchor,.post-body h3:hover .hanchor,.post-body h4:hover .hanchor,.hanchor:focus{opacity:1;color:var(--orange)}
@media(hover:none){.hanchor{display:none}}

/* código em linha */
.post-body :not(pre)>code{font-family:var(--font-mono);font-size:.84em;background:#1d1a17;border:1px solid var(--line);padding:.1em .38em;color:#ffc08a;word-break:break-word}

/* blocos de código */
.code{margin:1.5em 0;border:1px solid var(--code-line);background:var(--code-bg)}
.code-head{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:38px;padding:0 6px 0 14px;background:var(--code-head);border-bottom:1px solid var(--code-line)}
.code-lang{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.code-copy{display:inline-flex;align-items:center;gap:6px;min-height:32px;min-width:72px;justify-content:center;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;background:transparent;color:var(--text);border:1px solid var(--line-2);padding:0 10px;cursor:pointer}
.code-copy:hover{color:#fff;border-color:var(--orange)}
.code-copy.is-done{color:var(--good);border-color:var(--good)}
.post-body pre,.post-body pre[class*=language-]{margin:0;background:var(--code-bg)!important;color:#e9e3d8;border:0;border-radius:0;padding:16px 18px;overflow-x:auto;font-family:var(--font-mono)!important;font-size:.88rem;line-height:1.65;tab-size:2;text-shadow:none}
.post-body pre code,.post-body pre code[class*=language-]{font-family:inherit!important;background:none;border:0;padding:0;color:inherit;font-size:1em;white-space:pre;text-shadow:none}
.post-body pre:focus-visible{outline-offset:-2px}
/* artigo legado: <pre> sem cabeçalho ganha um pelo blog.js */
.code-wrap{position:relative}

/* tabelas */
.table-wrap{overflow-x:auto;border:1px solid var(--line);margin:1.6em 0;background:var(--bg-2)}
.post-body table{width:100%;border-collapse:collapse;font-family:var(--font-ui);font-size:.96rem;line-height:1.5;margin:0}
.post-body th,.post-body td{text-align:left;vertical-align:top;padding:11px 14px;border-bottom:1px solid var(--line)}
.post-body th{background:var(--panel-2);font-weight:600;color:var(--ink);font-size:.86rem;letter-spacing:.02em;white-space:nowrap}
.post-body td:first-child{color:var(--ink);font-weight:500}
.post-body tr:last-child td{border-bottom:0}
@media(max-width:640px){.post-body table{font-size:.9rem;min-width:34rem}.post-body th,.post-body td{padding:10px 12px}}

/* ---------- blocos técnicos (:::tipo) ---------- */
.callout{--c:var(--info);--c-bg:rgba(130,184,236,.06);margin:1.6em 0;padding:16px 20px 4px;border:1px solid var(--line);border-left:3px solid var(--c);background:linear-gradient(90deg,var(--c-bg),transparent 70%),var(--panel);font-size:1.04rem}
.callout>*{margin:0 0 .9em}
.callout>.callout-label{display:flex;align-items:center;gap:8px;margin:0 0 6px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--c)}
.callout-label .ico{width:16px;height:16px}
.callout>.callout-title{font-weight:600;color:var(--ink);font-size:1.08rem;line-height:1.35;margin:0 0 .5em}
.callout ul,.callout ol{padding-left:1.3em}
.callout .table-wrap{margin:.4em 0 1em}
.callout--conceito{--c:var(--info);--c-bg:rgba(130,184,236,.07)}
.callout--atencao{--c:var(--warn);--c-bg:rgba(234,181,78,.07)}
.callout--ferramentas{--c:var(--orange-bright);--c-bg:rgba(244,124,28,.05)}
.callout--desafio{--c:var(--orange-bright);--c-bg:rgba(244,124,28,.08)}
.callout--resultado{--c:var(--good);--c-bg:rgba(76,196,126,.06)}
.callout--problema{--c:var(--bad);--c-bg:rgba(240,128,114,.05)}
.callout--dica{--c:var(--muted);--c-bg:rgba(255,255,255,.02)}
/* dentro das etapas, resultado e problemas ficam compactos */
.step-body .callout{margin:1em 0;padding:10px 14px 2px;font-size:.98rem}
.step-body .callout>.callout-label{margin-bottom:4px}

/* laboratório: cabeçalho */
.lab-card{margin:1.8em 0;border:1px solid var(--line-2);border-top:3px solid var(--orange);background-color:var(--panel);font-family:var(--font-ui)}
.lab-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;padding:20px 22px 16px;border-bottom:1px solid var(--line)}
.lab-tag{display:inline-flex;align-items:center;gap:7px;background:var(--orange);color:var(--ink-on-orange);font-family:var(--font-mono);font-weight:500;font-size:.78rem;letter-spacing:.08em;padding:5px 10px}
.post-body .lab-title{margin:0;font-family:var(--font-display);font-weight:600;text-transform:uppercase;letter-spacing:.01em;font-size:1.3rem;line-height:1.2;color:var(--ink)}
.lab-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:0;padding:6px 22px 4px}
.lab-facts>div{padding:12px 0;border-bottom:1px solid var(--line)}
.lab-facts>div.wide{grid-column:1/-1}
.lab-facts dt{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 5px}
.post-body .lab-facts .chips{padding:0}
.post-body .lab-facts .chips li{margin:0}
.lab-facts dd{margin:0;font-size:1rem;line-height:1.55;color:var(--text)}
@media(max-width:560px){.lab-facts{grid-template-columns:1fr 1fr}.lab-facts>div:nth-child(3){grid-column:1/-1}}
.lab-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 16px;padding:14px 22px 18px}
.lab-start{display:inline-flex;align-items:center;gap:8px;min-height:40px;font-family:var(--font-mono);font-size:.8rem;color:var(--orange-bright);text-decoration:none}
.lab-start:hover{text-decoration:underline}
.lab-progress{font-family:var(--font-mono);font-size:.76rem;color:var(--muted)}
.lab-progress b{color:var(--good);font-weight:500}

/* laboratório: etapas */
.steps{list-style:none;padding:0!important;margin:1.6em 0 2em}
.steps>.step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:0 18px;margin:0;padding:0 0 1.4em;position:relative}
.steps>.step::before{content:"";position:absolute;left:21px;top:44px;bottom:0;width:1px;background:var(--line-2)}
.steps>.step:last-child::before{display:none}
.step-num{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--orange);background:var(--bg);color:var(--orange-bright);font-family:var(--font-mono);font-weight:500;font-size:.9rem;position:relative}
.step-body{min-width:0}
.step-body>*{margin:0 0 1em}
.post-body .step-body>h4{font-size:1.2rem;margin:.45em 0 .6em}
@media(max-width:560px){
  .steps>.step{grid-template-columns:32px minmax(0,1fr);gap:0 12px}
  .step-num{width:32px;height:32px;font-size:.78rem}
  .steps>.step::before{left:15px;top:32px}
  .post-body .step-body>h4{margin-top:.2em}
}

/* laboratório: topologia em caixas aninhadas */
.topo{margin:1.6em 0;padding:18px;border:1px solid var(--line);background:var(--bg-2)}
.post-body .topo-tree,.post-body .topo-tree ul{list-style:none;margin:0;padding:0}
.post-body .topo-tree li{margin:0}
.post-body .topo-tree li::marker{content:none}
.post-body .topo-node{position:relative;border:1px solid var(--line-2);padding:34px 14px 14px;background:rgba(255,255,255,.015)}
.topo-node .topo-node{border-style:dashed}
.topo-node .topo-node .topo-node{border:1px solid rgba(244,124,28,.6);border-style:solid;background:rgba(244,124,28,.05)}
.topo-label{position:absolute;left:12px;top:9px;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.topo-node .topo-node .topo-node>.topo-label{color:var(--orange-bright)}
.topo-node>ul{display:flex;flex-wrap:wrap;gap:10px}
.topo-node>ul>.topo-node{flex:1 1 100%}
.post-body .topo-leaf{flex:1 1 9rem;border:1px solid var(--line-2);background:var(--panel-2);padding:9px 12px;font-family:var(--font-mono);font-size:.8rem;color:var(--ink);text-align:center}
.topo figcaption{margin-top:12px}

/* checklist interativo */
.checklist-box{margin:1.4em 0 2em;border:1px solid var(--line-2);background:var(--panel);padding:16px 18px 10px}
.cl-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-family:var(--font-mono);font-size:.74rem}
.cl-label{letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.cl-count{color:var(--ink)}
.cl-count b{color:var(--good);font-weight:500}
.cl-bar{height:4px;background:var(--line);margin:10px 0 8px}
.cl-bar span{display:block;height:100%;width:0;background:var(--good);transition:width .25s ease}
.post-body ul.checklist{list-style:none;padding:0;margin:0}
.post-body ul.checklist li{display:flex;align-items:flex-start;gap:12px;margin:0;padding:9px 0;border-bottom:1px solid var(--line)}
.post-body ul.checklist li:last-child{border-bottom:0}
.checklist input{flex-shrink:0;width:20px;height:20px;margin:4px 0 0;accent-color:var(--good);cursor:pointer}
.checklist label{cursor:pointer;flex:1;line-height:1.55}
.checklist input:checked+label{color:var(--muted)}
.checklist .chk{display:inline-block;width:1.3em;color:var(--orange);font-weight:600}  /* legado */
.cl-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 16px;border-top:1px solid var(--line);margin-top:4px;padding-top:10px}
.post-body .cl-note{margin:0;font-family:var(--font-mono);font-size:.72rem;color:var(--muted);line-height:1.5}
.cl-reset{min-height:36px;background:none;border:1px solid var(--line-2);color:var(--text);font-family:var(--font-mono);font-size:.72rem;padding:0 12px;cursor:pointer}
.cl-reset:hover{border-color:var(--orange)}
.checklist-box.is-complete{border-color:rgba(76,196,126,.6)}

/* tags */
.post-tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0!important;margin:3em 0 0!important;border-top:1px solid var(--line);padding-top:24px!important}
.post-tags li{margin:0;padding:0}
.post-tags a{display:inline-flex;align-items:center;min-height:32px;font-family:var(--font-mono);font-size:.74rem;color:var(--text);background:var(--bg-2);border:1px solid var(--line-2);padding:0 11px;text-decoration:none}
.post-tags a:hover{border-color:var(--orange);color:var(--ink)}

/* ---------- sumário ---------- */
.toc{font-family:var(--font-ui);font-size:.9rem}
.toc-title{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line-2)}
.toc ol ol{border:0;margin:2px 0 6px;padding-left:12px;display:none}
.toc li.open>ol{display:block}
.toc li{margin:0}
.toc a{display:block;padding:6px 0 6px 14px;color:var(--muted);text-decoration:none;border-left:2px solid transparent;margin-left:-1px;line-height:1.35}
.toc ol ol a{font-size:.84rem;padding:4px 0 4px 12px;border-left:0}
.toc a:hover{color:var(--ink)}
.toc a.active,.toc a[aria-current]{color:var(--ink);border-left-color:var(--orange)}
.toc ol ol a.active{color:var(--orange-bright)}
.toc-toggle{display:none}
.aside-cta{display:flex;gap:10px;align-items:flex-start;margin-top:26px;padding:14px;border:1px solid var(--line);background:var(--panel);text-decoration:none;font-size:.84rem;line-height:1.45;color:var(--muted)}
.aside-cta b{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}
.aside-cta .ico{color:var(--orange);width:18px;height:18px;margin-top:2px}
.aside-cta:hover{border-color:var(--orange);color:var(--text)}

/* sumário no celular/tablet: barra fixa abaixo do header, que abre a lista */
@media(max-width:1099px){
  .post-aside{max-width:var(--maxread);width:100%;margin:24px auto 0}
  .post-aside .aside-cta{display:none}
  .toc{background:var(--panel);border:1px solid var(--line);padding:16px 18px}
  .js .post-aside{position:sticky;top:var(--head-h);z-index:30;margin-top:0;max-width:none;margin-left:-24px;margin-right:-24px;width:auto}
  .js .toc{padding:0;border:0;border-bottom:1px solid var(--line);background:rgba(17,16,17,.97);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
  .js .toc-title{display:none}
  .js .toc-toggle{display:flex;align-items:center;gap:10px;width:100%;min-height:48px;padding:0 24px;background:none;border:0;color:var(--ink);font:inherit;font-size:.92rem;text-align:left;cursor:pointer}
  .toc-toggle .tt-label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);flex-shrink:0}
  .toc-toggle .tt-cur{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .toc-toggle .tt-chev{flex-shrink:0;width:10px;height:10px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg) translateY(-3px);transition:transform .2s}
  .toc-toggle[aria-expanded="true"] .tt-chev{transform:rotate(-135deg)}
  .js .toc>ol{display:none;max-height:min(60vh,520px);overflow-y:auto;border:0;padding:4px 24px 14px;border-top:1px solid var(--line)}
  .js .toc.is-open>ol{display:block}
  .js .toc ol ol{display:none}
  .js .toc a{min-height:40px;display:flex;align-items:center}
  .post-body{padding-top:28px}
}
@media(max-width:640px){
  .js .post-aside{margin-left:-16px;margin-right:-16px}
  .js .toc-toggle{padding:0 16px}
  .js .toc>ol{padding:4px 16px 14px}
}

/* ---------- continue sua jornada ---------- */
.journey{margin-top:72px;border-top:1px solid var(--line);background:var(--bg-2);padding:52px 0 60px}
.journey h2{font-family:var(--font-display);font-weight:600;text-transform:uppercase;font-size:clamp(1.6rem,3vw,2.1rem);color:var(--ink);margin:0 0 26px}
.journey-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:20px}
@media(max-width:860px){.journey-grid{grid-template-columns:1fr}}
.next-card{display:flex;flex-direction:column;gap:12px;padding:24px;border:1px solid var(--line-2);border-top:2px solid var(--orange);background:var(--panel);text-decoration:none;color:var(--text)}
a.next-card:hover{border-color:var(--orange)}
.next-card.is-soon{border-top-color:var(--warn)}
.next-kicker{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.next-title{font-family:var(--font-display);font-weight:600;text-transform:uppercase;font-size:1.35rem;line-height:1.2;color:var(--ink);text-wrap:balance}
.next-text{font-size:1rem;line-height:1.6}
.next-meta{font-family:var(--font-mono);font-size:.74rem;color:var(--muted);display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap}
.next-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:4px}
.next-links a{display:inline-flex;align-items:center;gap:7px;min-height:36px;font-family:var(--font-mono);font-size:.76rem;color:var(--link);text-decoration:none}
.next-links a:hover{text-decoration:underline}
.related{display:flex;flex-direction:column;gap:12px}
.j-sub{font-family:var(--font-mono);font-weight:400;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0}
.mini-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.mini a{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border:1px solid var(--line);background:var(--panel);text-decoration:none}
.mini a:hover{border-color:var(--orange)}
.mini-cat{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--orange-bright)}
.mini-title{font-weight:600;font-size:1.02rem;line-height:1.35;color:var(--ink)}
.mini-meta{font-family:var(--font-mono);font-size:.72rem;color:var(--muted)}
.j-all{display:inline-flex;align-items:center;gap:8px;min-height:40px;font-family:var(--font-mono);font-size:.78rem;color:var(--link);text-decoration:none}
.j-all:hover{text-decoration:underline}
.j-video{display:flex;align-items:center;gap:14px;margin-top:20px;padding:14px 18px;border:1px solid var(--line);background:var(--panel);text-decoration:none;color:var(--muted);font-size:.94rem;line-height:1.45}
.j-video .ico{width:26px;height:26px;color:#ff4d4d}
.j-video b{color:var(--ink);font-weight:600;margin-right:6px}
.j-video:hover{border-color:var(--orange)}

/* ---------- CTAs do artigo legado ---------- */
.course-cta{margin:3em 0 0!important;background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--orange);padding:24px 26px;font-family:var(--font-ui)}
.course-cta .cta-title{font-family:var(--font-ui);font-weight:600;font-size:1.18rem;margin:0 0 10px;color:var(--ink)}
.course-cta h3{font-family:var(--font-ui);font-weight:600;font-size:1.18rem;margin:0 0 10px;color:var(--ink)}
.course-cta p{font-size:1rem;line-height:1.6;color:var(--text);margin:0 0 14px}
.course-cta .cta-link{display:inline-block;font-family:var(--font-mono);font-size:.82rem;color:var(--link);text-decoration:none;font-weight:500}
.course-cta .cta-link:hover{text-decoration:underline}
.bp-cta{border-left-color:var(--line-2)!important}
.bp-cta + .course-cta{margin-top:1.2em!important}
.list-head{padding:30px 0 8px;max-width:52rem}
.cat-chips{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 2px}
.cat-chips a{font-family:var(--font-mono);font-size:.74rem;color:var(--text);background:var(--panel);border:1px solid var(--line);padding:5px 12px;text-decoration:none}

/* 404 */
.notfound{text-align:center;padding:80px 0}
.notfound h1{font-family:var(--font-display);font-size:4rem;color:var(--orange);margin:0}
.notfound p{color:var(--muted)}
.cta-link{color:var(--link);font-family:var(--font-mono);text-decoration:none}

/* ---------- movimento reduzido ---------- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .card:hover{transform:none}
}
@media print{
  .site-head,.post-aside,.journey,.site-foot,.code-copy,.cl-foot,.read-progress{display:none!important}
  body{background:#fff;color:#000}
}
/* cabeçalho do artigo alinhado à coluna de texto da grade */
@media(min-width:1100px){.post-hero .post-head{max-width:calc(var(--maxread) + 64px + 16rem + 48px)}}
@media(max-width:1099px){html{scroll-padding-top:calc(var(--head-h) + 64px)}}  /* header + barra do sumário */
@media(max-width:640px){.post-serie{border-left:0;padding-left:0;flex-basis:100%}}
.bh-menu .bh-cta{display:flex;justify-content:center;margin-top:16px;padding:14px;border:0!important;background:var(--orange);color:var(--ink-on-orange)!important;text-transform:uppercase}
.post>.post-head{padding-top:28px}  /* artigo legado: sem .post-hero */