@charset "utf-8";
/* ==========================================================================
   CADentista — sistema visual
   Monocromático · editorial · técnico
   ========================================================================== */

/* --- 1. Fontes ---------------------------------------------------------- */
@font-face{font-family:"CMU Serif";src:url("../fonts/cmu-serif-400.woff2") format("woff2");
  font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"CMU Serif";src:url("../fonts/cmu-serif-700.woff2") format("woff2");
  font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"CMU Serif";src:url("../fonts/cmu-serif-400-italic.woff2") format("woff2");
  font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-400.woff2") format("woff2");
  font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-500.woff2") format("woff2");
  font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-600.woff2") format("woff2");
  font-weight:600;font-style:normal;font-display:swap}

/* --- 2. Tokens ---------------------------------------------------------- */
:root{
  /* Escala acromática fria — nenhum matiz quente em nenhum degrau */
  --ink:#0A0A0A;
  --ink-raised:#141618;
  --paper:#FFFFFF;
  --paper-alt:#F4F5F6;
  --paper-deep:#EAECEE;
  --line:#E3E6E8;
  --line-strong:#C9CED3;
  --muted:#5A5E63;        /* texto secundário  — 6.5:1 no branco */
  --muted-soft:#696E74;   /* rótulos e metadados — 5.1:1 no branco, 4.7:1 no cinza */

  --on-ink:#FFFFFF;
  --on-ink-muted:#9CA1A6;
  --line-ink:rgba(255,255,255,.18);
  --line-ink-soft:rgba(255,255,255,.10);

  /* superfícies correntes — trocadas em blocos invertidos */
  --bg:var(--paper);
  --fg:var(--ink);
  --fg-muted:var(--muted);
  --rule:var(--line);
  --rule-strong:var(--line-strong);

  --serif:"CMU Serif",Cambria,"Times New Roman",Times,serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --shell:clamp(20px,4.6vw,80px);
  --maxw:1560px;
  --rail:190px;
  --measure:68ch;
  --head-h:62px;

  --step:clamp(56px,7vw,116px);      /* respiro vertical entre seções */
  --step-s:clamp(30px,3.6vw,52px);

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* --- 3. Base ------------------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--head-h) + 18px)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:var(--sans);font-size:16px;line-height:1.62;
  font-weight:400;letter-spacing:-.005em;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-feature-settings:"kern" 1;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;height:auto;display:block}
::selection{background:var(--ink);color:var(--paper)}

a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--fg);outline-offset:3px;border-radius:1px}

.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:var(--on-ink);padding:12px 18px;
  font-size:.8rem;letter-spacing:.08em;text-transform:uppercase
}
.skip:focus{left:0}

/* --- 4. Tipografia ------------------------------------------------------ */
h1,h2,h3,h4,h5{margin:0;font-weight:400;font-size:inherit;text-wrap:balance}

.display{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(2.9rem,7.6vw,7.2rem);line-height:.94;letter-spacing:-.024em;
  /* CMU tem espaço de palavra largo; em corpo display isso abre buracos */
  word-spacing:-.055em;
}
.display-s{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(2.1rem,4.4vw,3.9rem);line-height:1;letter-spacing:-.02em;
  word-spacing:-.04em;
}
h2.h-sec{
  font-family:var(--serif);font-size:clamp(1.65rem,2.5vw,2.5rem);
  line-height:1.08;letter-spacing:-.018em;
}
h3{
  font-family:var(--sans);font-size:1.03rem;font-weight:600;
  line-height:1.35;letter-spacing:-.012em;
}
h4{font-family:var(--sans);font-size:.92rem;font-weight:600;letter-spacing:-.008em}

.eyebrow{
  font-size:.688rem;font-weight:500;letter-spacing:.17em;text-transform:uppercase;
  color:var(--fg-muted);margin:0;font-variant-numeric:tabular-nums;
}
.eyebrow--ink{color:var(--fg)}

.lede{
  font-size:clamp(1.02rem,1.35vw,1.24rem);line-height:1.58;
  color:var(--fg);max-width:52ch;letter-spacing:-.011em;
}

p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
.prose{max-width:var(--measure)}
.prose p,.prose li{color:var(--fg);font-size:1rem;line-height:1.66}
.prose>p+p{margin-top:0}
strong,b{font-weight:600;color:var(--fg)}
em,i{font-style:italic}
small{font-size:.8rem}

.muted{color:var(--fg-muted)}
.num{font-variant-numeric:tabular-nums lining-nums}
.serif{font-family:var(--serif)}

/* Link textual: sublinhado fino que engrossa no hover */
.prose a,a.link,.ref-list a,.box a,td a,.acc-body a{
  text-decoration:underline;text-underline-offset:.22em;
  text-decoration-thickness:1px;text-decoration-color:var(--rule-strong);
  transition:text-decoration-color .2s var(--ease),color .2s var(--ease);
}
.prose a:hover,a.link:hover,.ref-list a:hover,.box a:hover,td a:hover,.acc-body a:hover{
  text-decoration-color:currentColor;
}

/* --- 5. Estrutura ------------------------------------------------------- */
.shell{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--shell)}
.band{padding-block:var(--step)}
.band--tight{padding-block:var(--step-s)}
.band--rule{border-top:1px solid var(--rule)}
.band--alt{background:var(--paper-alt)}

/* Bloco invertido: troca os tokens de superfície, nada mais */
.band--ink,.ink-scope{
  background:var(--ink);
  --bg:var(--ink);--fg:var(--on-ink);--fg-muted:var(--on-ink-muted);
  --rule:var(--line-ink);--rule-strong:var(--line-ink);
  color:var(--on-ink);
}
.band--ink.band--rule{border-top-color:var(--line-ink)}

/* Trilho + faixa: a assimetria assinatura */
.rail-grid{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:0}
.rail-grid>.rail{
  padding-right:28px;border-right:1px solid var(--rule);
  position:relative;
}
.rail-grid>.track{padding-left:clamp(24px,3.2vw,52px);min-width:0}
.rail .rail-sticky{position:sticky;top:calc(var(--head-h) + 26px)}
.rail-num{
  font-family:var(--serif);font-size:1.02rem;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
h2.rail-label,
.rail-label{
  display:block;margin-top:10px;font-size:.688rem;font-weight:500;
  letter-spacing:.15em;text-transform:uppercase;color:var(--fg-muted);
}

@media (max-width:1000px){
  .rail-grid{grid-template-columns:1fr;gap:20px}
  .rail-grid>.rail{
    padding-right:0;border-right:0;border-bottom:1px solid var(--rule);padding-bottom:14px;
    display:flex;align-items:baseline;gap:14px;
  }
  .rail .rail-sticky{position:static;display:flex;align-items:baseline;gap:14px}
  .rail-label{margin-top:0}
  .rail-grid>.track{padding-left:0}
}

/* Colunas separadas por fio — substitui o padrão "grade de cards" */
.cols{display:grid;gap:0}
.cols>*{padding:0 0 0 clamp(18px,2vw,30px);border-left:1px solid var(--rule)}
.cols>*:first-child{padding-left:0;border-left:0}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.cols h3{margin-bottom:.5em}
.cols p{font-size:.92rem;line-height:1.6;color:var(--fg-muted)}
.cols .col-n{
  display:block;font-family:var(--serif);font-size:.82rem;
  color:var(--fg-muted);margin-bottom:12px;font-variant-numeric:tabular-nums;
}
@media (max-width:900px){
  .cols-3,.cols-4{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:30px}
  .cols-3>:nth-child(3),.cols-4>:nth-child(3){padding-left:0;border-left:0}
}
@media (max-width:560px){
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr;row-gap:0}
  .cols>*{padding:22px 0 0;border-left:0;border-top:1px solid var(--rule);margin-top:22px}
  .cols>*:first-child{padding-top:0;border-top:0;margin-top:0}
}

/* Lista de definição em duas colunas (metadados, especificações) */
.spec{margin:0;display:grid;grid-template-columns:minmax(120px,26%) 1fr;
  border-top:1px solid var(--rule)}
.spec>dt{
  padding:12px 16px 12px 0;border-bottom:1px solid var(--rule);
  font-size:.7rem;font-weight:500;letter-spacing:.13em;text-transform:uppercase;
  color:var(--fg-muted);
}
.spec>dd{margin:0;padding:12px 0;border-bottom:1px solid var(--rule);
  font-size:.93rem;line-height:1.55;font-variant-numeric:tabular-nums}
@media (max-width:600px){
  .spec{grid-template-columns:1fr}
  .spec>dt{padding-bottom:2px;border-bottom:0}
  .spec>dd{padding-top:0}
}

/* Tira de metadados da abertura */
/* Faixa de metadados: 4 colunas fixas. Grade (e não flex com quebra) para que
   nenhum fio vertical fique solto no fim de uma linha quebrada. */
.meta-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  border-top:1px solid var(--rule);margin-top:clamp(30px,4vw,52px);
}
.meta-strip>div{
  padding:16px clamp(14px,1.8vw,26px);
  border-left:1px solid var(--rule);
}
.meta-strip>div:first-child{padding-left:0;border-left:0}
.meta-strip>div:last-child{padding-right:0}
.meta-strip b{
  display:block;font-family:var(--serif);font-weight:400;font-size:1.5rem;
  line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.meta-strip span{
  display:block;margin-top:7px;font-size:.688rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--fg-muted);
}
@media (max-width:900px){
  .meta-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .meta-strip>div{padding:14px 16px}
  .meta-strip>div:nth-child(odd){padding-left:0;border-left:0}
  .meta-strip>div:nth-child(even){padding-right:0}
  .meta-strip>div:nth-child(n+3){border-top:1px solid var(--rule)}
  .meta-strip b{font-size:1.22rem}
}

/* --- 6. Cabeçalho ------------------------------------------------------- */
.head{
  position:sticky;top:0;z-index:80;background:var(--paper);
  border-bottom:1px solid var(--line);
}
.head-in{
  height:var(--head-h);display:flex;align-items:center;gap:20px;
  width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--shell);
}
.brand{display:flex;align-items:center;gap:6px;color:var(--ink);flex:0 0 auto}
.brand svg{width:19px;height:19px;flex:0 0 auto}
.brand .word{
  font-family:var(--serif);font-size:1.09rem;line-height:1;letter-spacing:-.005em;
  display:block;padding-top:1px;
}
.brand .word b{font-weight:400;letter-spacing:.055em;color:inherit}

.running{
  flex:1 1 auto;text-align:center;font-size:.688rem;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis;
}
.head-right{flex:0 0 auto;display:flex;align-items:center;gap:18px}

.lang{display:flex;align-items:center;gap:6px;font-size:.7rem;font-weight:500;
  letter-spacing:.1em;color:var(--muted-soft)}
.lang a{padding:2px 1px;transition:color .18s var(--ease)}
.lang a:hover{color:var(--ink)}
.lang [aria-current]{color:var(--ink);font-weight:600}
.lang i{font-style:normal;opacity:.5}

.idx-btn{
  appearance:none;border:0;background:none;padding:6px 0;cursor:pointer;color:var(--ink);
  font-family:var(--sans);font-size:.7rem;font-weight:500;letter-spacing:.14em;
  text-transform:uppercase;display:inline-flex;align-items:center;gap:9px;
}
.idx-btn .bars{display:block;width:16px;height:9px;position:relative}
.idx-btn .bars::before,.idx-btn .bars::after{
  content:"";position:absolute;left:0;width:16px;height:1px;background:currentColor;
  transition:transform .3s var(--ease);
}
.idx-btn .bars::before{top:1px}
.idx-btn .bars::after{top:7px}
.idx-btn[aria-expanded="true"] .bars::before{transform:translateY(3px) rotate(45deg)}
.idx-btn[aria-expanded="true"] .bars::after{transform:translateY(-3px) rotate(-45deg)}

@media (max-width:1100px){.running{display:none}.head-in{justify-content:space-between}}
@media (max-width:420px){.idx-btn span.t{display:none}}

/* --- 7. Índice em tela cheia -------------------------------------------- */
.index-ov{
  position:fixed;inset:0;z-index:90;background:var(--ink);color:var(--on-ink);
  display:grid;grid-template-rows:var(--head-h) 1fr;
  opacity:0;visibility:hidden;transition:opacity .34s var(--ease),visibility .34s;
  overflow-y:auto;overscroll-behavior:contain;
}
.index-ov[data-open="true"]{opacity:1;visibility:visible}
.index-ov .ov-head{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--shell);
  border-bottom:1px solid var(--line-ink);
}
.index-ov .ov-head .brand{color:var(--on-ink)}
.index-ov .idx-btn{color:var(--on-ink)}
.index-ov .lang{color:var(--on-ink-muted)}
.index-ov .lang a:hover,.index-ov .lang [aria-current]{color:var(--on-ink)}

.ov-body{
  width:100%;max-width:var(--maxw);margin-inline:auto;padding:clamp(28px,5vw,64px) var(--shell) 64px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);
  gap:clamp(30px,6vw,90px);align-items:start;
}
@media (max-width:900px){.ov-body{grid-template-columns:1fr;gap:38px}}

.ov-list{display:flex;flex-direction:column}
.ov-list a{
  display:grid;grid-template-columns:56px minmax(0,1fr) 22px;align-items:baseline;
  gap:14px;padding:clamp(13px,1.5vw,19px) 0;border-top:1px solid var(--line-ink);
  opacity:0;transform:translateY(10px);
  transition:opacity .5s var(--ease),transform .5s var(--ease),color .2s;
}
.index-ov[data-open="true"] .ov-list a{opacity:1;transform:none}
.ov-list a:last-child{border-bottom:1px solid var(--line-ink)}
.ov-list .n{font-family:var(--serif);font-size:.9rem;color:var(--on-ink-muted);
  font-variant-numeric:tabular-nums}
.ov-list .t{
  font-family:var(--serif);font-size:clamp(1.5rem,3.4vw,2.5rem);line-height:1.06;
  letter-spacing:-.02em;transition:transform .34s var(--ease);
}
.ov-list .d{display:block;font-family:var(--sans);font-size:.78rem;
  letter-spacing:.02em;color:var(--on-ink-muted);margin-top:7px}
.ov-list .go{justify-self:end;font-size:.9rem;color:var(--on-ink-muted);
  transform:translateX(-6px);opacity:0;transition:.3s var(--ease)}
.ov-list a:hover .go,.ov-list a:focus-visible .go{opacity:1;transform:none}
.ov-list a:hover .t{transform:translateX(10px)}
.ov-list a[aria-current] .n{color:var(--on-ink)}

.ov-aside{border-top:1px solid var(--line-ink);padding-top:20px}
.ov-aside p{font-size:.86rem;line-height:1.6;color:var(--on-ink-muted);max-width:42ch}
.ov-aside .contact{display:flex;flex-direction:column;gap:2px;margin-top:24px}
.ov-aside .contact a{
  display:flex;align-items:center;gap:12px;padding:11px 0;
  border-top:1px solid var(--line-ink-soft);font-size:.86rem;
  transition:color .2s var(--ease),padding-left .25s var(--ease);
}
.ov-aside .contact a:hover{padding-left:6px}
.ov-aside .contact svg{width:15px;height:15px;flex:0 0 auto;opacity:.75}
.ov-aside .contact a:hover svg{opacity:1}

body.nav-open{overflow:hidden}

/* --- 8. Abertura de página ---------------------------------------------- */
.cover{padding-block:clamp(48px,7.5vw,120px) clamp(38px,5vw,74px)}
.cover .display{margin-top:clamp(18px,2.6vw,34px)}
.cover .lede{margin-top:clamp(20px,2.6vw,32px)}
.cover-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,400px);
  gap:clamp(26px,5vw,80px);align-items:end}
@media (max-width:960px){.cover-grid{grid-template-columns:1fr;gap:32px;align-items:start}}

/* --- 9. Cabeçalho de seção ---------------------------------------------- */
.sec{border-top:1px solid var(--rule);padding-top:clamp(26px,3.4vw,44px);
  margin-top:clamp(48px,6vw,92px)}
.sec:first-of-type{margin-top:0}
.sec-head{margin-bottom:clamp(22px,2.8vw,36px)}
.sec-head .h-sec{margin-bottom:.42em}
.sec-intro{color:var(--fg-muted);font-size:.98rem;line-height:1.6;max-width:60ch}

/* --- 10. Tabelas -------------------------------------------------------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:24px}
table.data{
  width:100%;border-collapse:collapse;font-size:.875rem;
  font-variant-numeric:tabular-nums lining-nums;min-width:520px;
}
table.data caption{
  caption-side:top;text-align:left;font-size:.688rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--fg-muted);
  padding-bottom:12px;
}
table.data th,table.data td{
  text-align:left;vertical-align:top;padding:13px 20px 13px 0;
  border-bottom:1px solid var(--rule);line-height:1.5;
}
table.data th{
  font-size:.688rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;
  color:var(--fg-muted);border-bottom:1px solid var(--rule-strong);
  padding-bottom:11px;white-space:nowrap;
}
table.data tbody tr:last-child td{border-bottom:0}
table.data td:first-child{font-weight:500;padding-right:26px}
table.data .n{font-family:var(--serif);font-size:.95rem;white-space:nowrap}
table.data th:last-child,table.data td:last-child{padding-right:0}
@media (max-width:720px){
  table.data{min-width:0;font-size:.86rem}
  table.data thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  table.data tr{display:block;border-bottom:1px solid var(--rule-strong);padding:16px 0}
  table.data tr:last-child{border-bottom:0}
  /* Rótulo em bloco acima do valor. Grade aqui NÃO serve: todo elemento filho
     vira item de grade e é blocado, o que quebraria <i>, <strong> e <a> no meio
     da frase, cada um em uma linha. */
  table.data td{display:block;padding:7px 0 9px;border-bottom:0}
  table.data td::before{
    content:attr(data-l);display:block;margin-bottom:3px;
    font-size:.65rem;font-weight:500;letter-spacing:.1em;
    text-transform:uppercase;color:var(--muted-soft);line-height:1.4;
  }
  table.data td:first-child{padding-right:0;padding-top:2px}
  table.data td:first-child::before{color:var(--fg)}
}

/* --- 11. Destaques (sem card) ------------------------------------------- */
.box{
  border-left:2px solid var(--fg);padding:2px 0 2px clamp(16px,2vw,24px);
  margin-top:26px;max-width:var(--measure);
}
.box .box-l{
  display:block;font-size:.688rem;font-weight:500;letter-spacing:.15em;
  text-transform:uppercase;color:var(--fg-muted);margin-bottom:9px;
}
.box p{font-size:.93rem;line-height:1.62}
.box--soft{border-left-color:var(--rule-strong)}

/* --- 12. Listas --------------------------------------------------------- */
ul.plain,ol.plain{margin:0;padding:0;list-style:none}
.prose ul,.prose ol{margin:0 0 1.05em;padding-left:1.15em}
.prose li{margin-bottom:.42em}
.prose li::marker{color:var(--muted-soft)}

ul.ticks{margin:0;padding:0;list-style:none;display:grid;gap:0}
ul.ticks li{
  position:relative;padding:11px 0 11px 30px;border-top:1px solid var(--rule);
  font-size:.93rem;line-height:1.55;
}
ul.ticks li:last-child{border-bottom:1px solid var(--rule)}
ul.ticks li::before{
  content:"";position:absolute;left:4px;top:19px;width:9px;height:1px;background:var(--fg);
}
@media (min-width:760px){ul.ticks.two{grid-template-columns:1fr 1fr;column-gap:44px}
  ul.ticks.two li:nth-child(2){border-top:1px solid var(--rule)}}

/* Passos numerados */
.steps{counter-reset:s;display:grid;gap:0;margin-top:26px}
.steps>li{
  counter-increment:s;list-style:none;display:grid;
  grid-template-columns:46px minmax(0,1fr);gap:18px;
  padding:18px 0;border-top:1px solid var(--rule);
}
.steps>li:last-child{border-bottom:1px solid var(--rule)}
.steps>li::before{
  content:counter(s,decimal-leading-zero);font-family:var(--serif);font-size:.92rem;
  color:var(--fg-muted);font-variant-numeric:tabular-nums;line-height:1.6;
}
.steps h4{margin-bottom:5px}
.steps p{font-size:.9rem;line-height:1.58;color:var(--fg-muted)}

/* --- 13. Acordeão ------------------------------------------------------- */
details.acc{border-top:1px solid var(--rule)}
details.acc:last-of-type{border-bottom:1px solid var(--rule)}
details.acc>summary{
  list-style:none;cursor:pointer;padding:clamp(16px,2vw,22px) 40px clamp(16px,2vw,22px) 0;
  position:relative;display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;
  align-items:baseline;
}
details.acc>summary::-webkit-details-marker{display:none}
details.acc>summary:hover{color:var(--fg)}
details.acc .a-n{font-family:var(--serif);font-size:.9rem;color:var(--fg-muted);
  font-variant-numeric:tabular-nums}
details.acc .a-t{font-family:var(--serif);font-size:clamp(1.15rem,1.8vw,1.5rem);
  line-height:1.2;letter-spacing:-.015em}
/* Em páginas 100% acordeão o título do bloco É o cabeçalho de seção: precisa
   ser <h2> para o sumário do documento, sem herdar a caixa de um h2. */
h2.a-t,h3.a-t{display:inline;margin:0;font-weight:400}
details.acc>summary::after{
  content:"";position:absolute;right:6px;top:calc(50% - 1px);width:13px;height:1px;
  background:currentColor;
}
details.acc>summary::before{
  content:"";position:absolute;right:12px;top:calc(50% - 6.5px);width:1px;height:13px;
  background:currentColor;transition:transform .3s var(--ease),opacity .3s var(--ease);
}
details.acc[open]>summary::before{transform:scaleY(0);opacity:0}
.acc-body{padding:0 0 clamp(26px,3vw,38px) 68px}
@media (max-width:600px){
  details.acc>summary{grid-template-columns:36px minmax(0,1fr);gap:12px}
  .acc-body{padding-left:0}
}

/* --- 14. Referências ---------------------------------------------------- */
.ref-list{margin:22px 0 0;padding:0;list-style:none;counter-reset:r;
  column-gap:clamp(30px,4vw,64px)}
@media (min-width:900px){.ref-list{columns:2}}
.ref-list li{
  counter-increment:r;break-inside:avoid;position:relative;
  padding:11px 0 11px 34px;border-top:1px solid var(--rule);
  font-size:.815rem;line-height:1.5;color:var(--fg-muted);
}
.ref-list li::before{
  content:counter(r,decimal-leading-zero);position:absolute;left:0;top:11px;
  font-family:var(--serif);font-size:.78rem;color:var(--muted-soft);
  font-variant-numeric:tabular-nums;
}
.ref-list a{color:var(--fg)}

/* --- 15. Sumário interno ------------------------------------------------ */
.toc{margin:0;padding:0;list-style:none}
.toc li{border-top:1px solid var(--rule)}
.toc a{
  display:grid;grid-template-columns:30px 1fr;gap:10px;padding:9px 0;
  font-size:.8rem;line-height:1.4;color:var(--fg-muted);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.toc a:hover{color:var(--fg);padding-left:4px}
.toc a .n{font-family:var(--serif);font-variant-numeric:tabular-nums}
.toc a[aria-current="true"]{color:var(--fg)}
.toc a[aria-current="true"] .n{font-weight:700}

/* --- 16. Produto (implementação) ---------------------------------------- */
.item{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,250px);
  gap:clamp(18px,3vw,48px);padding:clamp(24px,3vw,38px) 0;
  border-top:1px solid var(--rule);align-items:start;
}
.item:last-of-type{border-bottom:1px solid var(--rule)}
.item .i-kind{
  font-size:.688rem;font-weight:500;letter-spacing:.15em;text-transform:uppercase;
  color:var(--fg-muted);margin-bottom:10px;display:block;
}
.item h3{font-family:var(--serif);font-weight:400;font-size:clamp(1.2rem,1.9vw,1.6rem);
  line-height:1.16;letter-spacing:-.016em;margin-bottom:.5em}
.item p{font-size:.92rem;line-height:1.6;color:var(--fg-muted);max-width:56ch}
.item .i-price{text-align:right}
.price{
  font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2.05rem);line-height:1;
  letter-spacing:-.018em;font-variant-numeric:tabular-nums;display:block;
}
.price-was{font-size:.85rem;color:var(--muted-soft);text-decoration:line-through;
  display:block;margin-bottom:6px;font-variant-numeric:tabular-nums}
.price-note{font-size:.75rem;line-height:1.5;color:var(--fg-muted);margin-top:9px;
  display:block}
.price-flag{
  display:inline-block;margin-top:9px;font-size:.65rem;font-weight:500;
  letter-spacing:.13em;text-transform:uppercase;border:1px solid var(--rule-strong);
  padding:4px 8px;color:var(--fg-muted);
}
@media (max-width:760px){
  .item{grid-template-columns:1fr;gap:18px}
  .item .i-price{text-align:left;border-top:1px solid var(--rule);padding-top:16px}
}

/* --- 17. Botões e ações ------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:13px 22px;
  border:1px solid var(--fg);color:var(--fg);background:none;cursor:pointer;
  font-family:var(--sans);font-size:.72rem;font-weight:500;letter-spacing:.13em;
  text-transform:uppercase;transition:background .25s var(--ease),color .25s var(--ease);
}
.btn:hover{background:var(--fg);color:var(--bg)}
.btn--solid{background:var(--fg);color:var(--bg)}
.btn--solid:hover{background:transparent;color:var(--fg)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

.arrow-link{
  display:inline-flex;align-items:baseline;gap:10px;font-size:.78rem;font-weight:500;
  letter-spacing:.1em;text-transform:uppercase;
}
.arrow-link .a{transition:transform .28s var(--ease);display:inline-block}
.arrow-link:hover .a{transform:translateX(6px)}

/* Navegação sequencial no pé da página */
.pager{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--rule)}
.pager a{
  padding:clamp(24px,3vw,40px) 0;display:block;transition:padding-left .3s var(--ease);
}
.pager a+a{border-left:1px solid var(--rule);padding-left:clamp(20px,3vw,44px)}
.pager .k{font-size:.688rem;font-weight:500;letter-spacing:.15em;text-transform:uppercase;
  color:var(--fg-muted)}
.pager .t{display:block;margin-top:11px;font-family:var(--serif);
  font-size:clamp(1.25rem,2.4vw,1.9rem);line-height:1.1;letter-spacing:-.018em}
.pager a:hover{padding-left:8px}
.pager a+a:hover{padding-left:calc(clamp(20px,3vw,44px) + 8px)}
@media (max-width:640px){
  .pager{grid-template-columns:1fr}
  .pager a+a{border-left:0;border-top:1px solid var(--rule);padding-left:0}
  .pager a+a:hover{padding-left:8px}
}

/* --- 18. Rodapé --------------------------------------------------------- */
.foot{background:var(--ink);color:var(--on-ink);
  --bg:var(--ink);--fg:var(--on-ink);--fg-muted:var(--on-ink-muted);
  --rule:var(--line-ink);--rule-strong:var(--line-ink);
  padding-block:clamp(52px,6vw,86px) 30px}
.foot-top{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));
  gap:clamp(26px,4vw,64px);padding-bottom:clamp(36px,4vw,58px)}
@media (max-width:820px){.foot-top{grid-template-columns:1fr 1fr;gap:34px}
  .foot-top>:first-child{grid-column:1/-1}}
@media (max-width:480px){.foot-top{grid-template-columns:1fr}}
.foot .f-logo{width:190px;margin-bottom:20px}
.foot p{font-size:.86rem;line-height:1.62;color:var(--on-ink-muted);max-width:46ch}
.foot h2{font-size:.688rem;font-weight:500;letter-spacing:.15em;text-transform:uppercase;
  color:var(--on-ink-muted);margin-bottom:14px}
.foot-col a{display:block;padding:7px 0;font-size:.88rem;
  transition:padding-left .22s var(--ease),color .2s}
.foot-col a:hover{padding-left:5px}
.foot-bot{border-top:1px solid var(--line-ink);padding-top:26px;
  display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
.foot-bot p{font-size:.75rem;color:var(--on-ink-muted);max-width:64ch}
.social{display:flex;gap:6px}
.social a{
  width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line-ink);
  transition:border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.social svg{width:16px;height:16px}
.social a:hover{border-color:currentColor}
/* única cor do site: identidade de terceiros no estado de interação */
.social a.wa:hover{color:#25D366;border-color:#25D366}
.social a.li:hover{color:#0A66C2;border-color:#0A66C2}
.social a.lt:hover{color:var(--on-ink);background:rgba(255,255,255,.08)}

/* --- 19. Figuras e diagramas -------------------------------------------- */
figure{margin:clamp(28px,3.4vw,44px) 0 0}
figure svg{width:100%;height:auto;display:block}
figcaption{
  margin-top:14px;padding-top:12px;border-top:1px solid var(--rule);
  font-size:.76rem;line-height:1.55;color:var(--fg-muted);max-width:60ch;
}
figcaption b{font-weight:500;color:var(--fg);letter-spacing:.06em;
  text-transform:uppercase;font-size:.688rem;margin-right:8px}
.plot{stroke:var(--fg);fill:none}
.plot-soft{stroke:var(--rule-strong);fill:none}
.plot-fill{fill:var(--fg);stroke:none}

/* --- 20. Home ----------------------------------------------------------- */
.hero-mark{width:min(300px,52vw);opacity:.09;position:absolute;right:0;bottom:-6%;
  pointer-events:none}
.idx-home{display:flex;flex-direction:column;border-top:1px solid var(--rule)}
.idx-home a{
  display:grid;grid-template-columns:62px minmax(0,1fr) minmax(0,300px) 24px;
  gap:clamp(14px,2vw,32px);align-items:baseline;padding:clamp(18px,2.4vw,30px) 0;
  border-bottom:1px solid var(--rule);transition:padding-left .32s var(--ease);
}
.idx-home a:hover{padding-left:10px}
.idx-home .n{font-family:var(--serif);font-size:.92rem;color:var(--fg-muted);
  font-variant-numeric:tabular-nums}
.idx-home .t{font-family:var(--serif);font-size:clamp(1.4rem,3vw,2.35rem);
  line-height:1.06;letter-spacing:-.022em}
.idx-home .d{font-size:.86rem;line-height:1.5;color:var(--fg-muted)}
.idx-home .go{justify-self:end;color:var(--fg-muted);transform:translateX(-8px);opacity:0;
  transition:.3s var(--ease)}
.idx-home a:hover .go{opacity:1;transform:none}
@media (max-width:860px){
  .idx-home a{grid-template-columns:44px minmax(0,1fr) 20px;row-gap:8px}
  .idx-home .d{grid-column:2/3}
}

/* --- 21. Movimento ------------------------------------------------------ */
.js [data-r]{opacity:0;transform:translateY(14px);
  transition:opacity .62s var(--ease),transform .62s var(--ease)}
[data-r].is-in{opacity:1;transform:none}
.js [data-r-rule]{transform:scaleX(0);transform-origin:left;
  transition:transform .8s var(--ease)}
[data-r-rule].is-in{transform:scaleX(1)}
.hr{height:1px;background:var(--rule);border:0;margin:0;display:block}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-r],[data-r-rule]{opacity:1;transform:none}
}

/* --- 22. Utilitários ---------------------------------------------------- */
.vh{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.mt-0{margin-top:0}.mt-s{margin-top:clamp(18px,2vw,26px)}
.mt-m{margin-top:clamp(28px,3.4vw,46px)}.mt-l{margin-top:clamp(40px,5vw,72px)}
.stack>*+*{margin-top:clamp(18px,2vw,26px)}
.wide{max-width:none}

/* --- 23. Impressão ------------------------------------------------------ */
@media print{
  .head,.index-ov,.pager,.social,.btn-row,.rail{display:none!important}
  body{font-size:11pt;color:#000;background:#fff}
  .band,.cover{padding-block:14pt}
  .rail-grid{grid-template-columns:1fr}
  .rail-grid>.track{padding-left:0}
  details.acc>summary::before,details.acc>summary::after{display:none}
  details.acc .acc-body{display:block!important;padding-left:0}
  .foot{background:#fff;color:#000;--fg:#000;--fg-muted:#444;--rule:#bbb}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:8pt;color:#555}
  .sec,figure,table{break-inside:avoid}
}

/* Figura de abertura da capa: sangra até a borda direita da grade */
.cover-fig{opacity:.6;margin-bottom:-6px}
.cover-fig svg{width:calc(100% + var(--shell));max-width:none}
@media (max-width:960px){.cover-fig{opacity:.5;margin-top:8px}
  .cover-fig svg{width:100%}}

/* --- 24. Cabeçalho sobre capa escura ------------------------------------ */
.head{transition:background-color .35s var(--ease),border-color .35s var(--ease),color .35s var(--ease)}
.head.is-over{
  background:#0A0A0A;border-bottom-color:transparent;color:#FFFFFF;
  --fg:#FFFFFF;--fg-muted:#9CA1A6;--rule:rgba(255,255,255,.18);--rule-strong:rgba(255,255,255,.30);
}
.head.is-over .brand{color:#FFFFFF}
.head.is-over .running{color:#9CA1A6}
.head.is-over .idx-btn{color:#FFFFFF}
.head.is-over .lang{color:rgba(255,255,255,.55)}
.head.is-over .lang a:hover,.head.is-over .lang [aria-current]{color:#FFFFFF}
.head.is-over :focus-visible{outline-color:#FFFFFF}

/* --- 25. Preço textual e escala de severidade --------------------------- */
.price--text{font-size:1.18rem;letter-spacing:0;line-height:1.3}

.sev{display:inline-flex;align-items:center;gap:4px;vertical-align:middle}
.sev i{width:6px;height:6px;border:1px solid currentColor;display:block;font-style:normal}
.sev i[data-on]{background:currentColor}
.sev .lb{font-size:.63rem;font-weight:500;letter-spacing:.13em;text-transform:uppercase;
  margin-left:6px;color:var(--fg-muted)}

details.acc>summary.sum-3{grid-template-columns:52px minmax(0,1fr) auto;gap:16px;
  padding-right:44px;align-items:baseline}
@media (max-width:700px){
  details.acc>summary.sum-3{grid-template-columns:36px minmax(0,1fr);gap:12px}
  details.acc>summary.sum-3 .sev{grid-column:2;margin-top:8px}
}

/* Bloco diagnóstico: rótulo curto + texto, sem caixa */
.diag{display:grid;gap:0;margin:0}
.diag>div{display:grid;grid-template-columns:minmax(120px,150px) minmax(0,1fr);gap:20px;
  padding:13px 0;border-top:1px solid var(--rule)}
.diag>div:first-child{border-top:0;padding-top:0}
.diag dt,.diag .k{font-size:.688rem;font-weight:500;letter-spacing:.13em;text-transform:uppercase;
  color:var(--fg-muted);margin:0}
.diag dd,.diag .v{margin:0;font-size:.93rem;line-height:1.6}
.diag .v ul{margin:6px 0 0;padding-left:1.1em}
.diag .v li{margin-bottom:.3em}
/* Linha de indicação: rótulo em versalete seguido do texto, na mesma métrica */
.ind{display:block;margin-top:9px;font-size:.875rem;line-height:1.55;color:var(--fg-muted)}
.ind b{
  font-weight:500;font-size:.625rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--fg-muted);margin-right:10px;
}
.ind b::after{content:" ·"}
@media (max-width:600px){
  .diag>div{grid-template-columns:1fr;gap:6px}
  .ind b{display:block;margin:0 0 3px}
  .ind b::after{content:""}
}

/* --- 26. Ajustes de ritmo ----------------------------------------------- */
/* A primeira faixa após a capa não precisa do respiro completo */
.cover + .band{padding-top:clamp(34px,4.2vw,64px)}
.cover .meta-strip{margin-top:clamp(26px,3.2vw,42px)}
/* Sumário lateral: separa do rótulo do trilho */
.rail .toc{border-top:1px solid var(--rule);padding-top:4px}