:root{
  --verde:#103C3F;--sombra:#082B2D;--cobre:#C9825B;--grafite:#293234;
  --cinza:#687477;--linha:#D7D4CB;--areia:#EEE9DF;--marfim:#F8F5EE;
  --paper:#FCFBF8;--figure-standard:820px;--figure-margin:465px;--figure-wide:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--grafite);font-family:"DejaVu Serif",Georgia,serif;line-height:1.7;font-size:17px}
a{color:var(--verde);text-decoration:none}a:hover{text-decoration:underline}

.sidebar{position:fixed;inset:0 auto 0 0;width:270px;background:var(--verde);color:white;padding:28px 22px 34px;overflow:auto;z-index:20}
.sidebar-home{display:inline-flex;align-items:center;gap:.45em;color:#f4f7f6!important;font:650 .78rem/1.2 "DejaVu Sans",Arial,sans-serif;text-decoration:none!important;margin:0 0 20px;padding:7px 10px 7px 0;border-bottom:1px solid rgba(255,255,255,.22)}.sidebar-home:hover{color:white!important;border-bottom-color:var(--cobre)}
.brand{font-family:"DejaVu Sans",Arial,sans-serif;font-weight:700;font-size:1.05rem;letter-spacing:.02em;margin-bottom:4px}
.subtitle{font-family:"DejaVu Sans",Arial,sans-serif;color:#d8e2df;font-size:.8rem;margin-bottom:28px}
.chapter-badge{font-family:"DejaVu Sans",Arial,sans-serif;text-transform:uppercase;letter-spacing:.12em;color:#c8d6d4;font-size:.68rem;margin-bottom:7px}
.chapter-title{font-family:"DejaVu Sans",Arial,sans-serif;font-size:1.42rem;font-weight:700;line-height:1.2;margin-bottom:24px}
.toc{font-family:"DejaVu Sans",Arial,sans-serif;font-size:.86rem}.toc a{display:block;color:#edf3f1;padding:7px 10px;border-left:2px solid transparent;border-radius:0 7px 7px 0;transition:.15s}.toc a.sub{padding-left:24px;font-size:.81rem;color:#d5e0de}.toc a.active{background:rgba(255,255,255,.09);border-left-color:var(--cobre);color:white}.toc-chapter-badge{margin:22px 10px 2px}.toc-chapter-badge:first-child{margin-top:0}.toc a.chapter-link{font-weight:700;font-size:.98rem;color:white;padding-top:4px;padding-bottom:10px}

main.content{margin-left:270px;min-height:100vh}
/* Antes eram 900px com 144px de padding: a coluna útil ficava estreita demais. */
.paper{max-width:1500px;margin:0 auto;padding:54px 500px 100px 62px}
p{margin:.72em 0}
h1,h2,h3{font-family:"DejaVu Sans",Arial,sans-serif;color:var(--grafite);line-height:1.18;scroll-margin-top:22px}
h1{font-size:2.65rem;margin:.12em 0 12px}h1:after{content:"";display:block;width:100%;height:2px;background:var(--cobre);margin-top:18px}
h2{font-size:1.72rem;margin-top:2.25em;margin-bottom:.7em}h3{font-size:1.23rem;color:var(--verde);margin-top:1.75em}

.epigraph{margin:28px 0 34px 32%;font-style:italic;color:var(--cinza);border-right:2px solid var(--linha);padding-right:18px;text-align:right}.epigraph footer{margin-top:.45em;font-style:normal;font-family:"DejaVu Sans",Arial,sans-serif;font-size:.78rem}
.intro{font-size:1.04rem;color:#394548;margin-bottom:2.2em}

.margin-note{float:right;width:320px;margin:5px -365px 18px 30px;padding:12px 14px;border-top:2px solid var(--cobre);background:var(--marfim);font-family:"DejaVu Sans",Arial,sans-serif;font-size:.80rem;line-height:1.48;color:#4d595b}.margin-note strong{display:block;color:var(--verde);margin-bottom:4px}.margin-note.warning{border-top-color:var(--cobre)}

.fuv-figure{margin:28px 0;text-align:center}.fuv-figure img,.fuv-rendered-image{display:block;width:67%!important;max-width:100%;height:auto;margin:0 auto}.fuv-rendered-image[data-fuv-source-type="pdf"]{object-fit:contain}.inline-tikz-image,.external-figure-image{width:67%}.margin-figure{float:right;width:calc(var(--figure-margin) * .75);margin:5px -495px 22px 32px}.margin-figure .fuv-rendered-image{width:100%!important;max-width:none}.wide-figure{width:min(var(--figure-wide),calc(100% + 70px));margin-left:max(-35px,calc((100% - var(--figure-wide))/2))}.wide-figure .fuv-rendered-image{width:67%;max-width:100%}.inline-figure{width:min(100%,var(--figure-standard));max-width:var(--figure-standard);margin-left:auto;margin-right:auto}.inline-figure .fuv-rendered-image{width:67%;max-width:100%}
.caption,figcaption{display:block;font-family:"DejaVu Sans",Arial,sans-serif;font-size:.78rem;color:var(--cinza);line-height:1.45;margin-top:9px;text-align:left}.figure-missing{padding:14px;border:1px dashed var(--linha);font: .78rem/1.4 "DejaVu Sans",Arial,sans-serif;color:var(--cinza);background:var(--marfim)}

/* Ambientes Soleira: estrutura aberta, sem caixas pesadas. */
.fuv-env{margin:1.45em 0;padding:10px 16px;background:white;break-inside:avoid-page}
.fuv-env.theorem{border-left:1.5px solid var(--verde);padding:11px 17px}
.fuv-env.definition{background:var(--marfim);border-left:1.5px solid var(--grafite);padding:10px 15px}
.fuv-env.example{border:1px solid var(--linha);border-radius:7px;padding:13px 16px;background:white}
.fuv-env.solution{border:0;background:transparent;padding:2px 1px 4px;margin-top:.7em}
.fuv-env.idea{border-left:1.5px solid var(--cobre);background:#fffdf9}
.fuv-env.exercise{border:0;border-top:1px solid var(--linha);padding:12px 4px}
.env-title{font-family:"DejaVu Sans",Arial,sans-serif;font-weight:700;color:var(--verde);margin-bottom:7px}.definition>.env-title{color:var(--grafite)}.solution>.env-title{font-weight:600;color:var(--cinza);font-size:.92rem}.no-title>.env-title{display:none}
.proof{margin:1.2em 0;padding-left:15px;border-left:1px solid var(--linha)}
/* Demonstrações do amsthm/plasTeX: mesmo desenho de .proof; o botão ▼ não tem script. */
.proof_wrapper{margin:1.2em 0;padding-left:15px;border-left:1px solid var(--linha)}
.proof_heading{margin:0 0 .3em}
.proof_caption{font-family:"DejaVu Sans",Arial,sans-serif;font-weight:600;font-size:.92rem;color:var(--cinza)}
.proof_caption::after{content:"."}
.expand-proof{display:none}
.proof_content>p:first-child{margin-top:0}
.proof_content::after{content:"\25A1";display:block;text-align:right;color:var(--cinza);line-height:1;margin-top:-.2em}
figcaption .caption_ref:not(:empty)::after{content:":"}
figcaption.subcaption .caption_ref::after{content:none}
.fuv-ref-sem-destino{color:inherit}
.fuv-cotia{margin:0 0 1.6em auto;max-width:66%;text-align:right;font-style:italic;font-size:.94rem;color:var(--cinza)}
figure.wrapfigure{margin:1.2em auto;text-align:center}
.fuv-quadro{display:inline-block;min-width:1.45em;padding:0 .2em;border:1px solid var(--cobre);font:600 .8em/1.4 "DejaVu Sans",Arial,sans-serif;text-align:center;color:var(--grafite)}
.subfigure{display:inline-block;vertical-align:top;margin:0 .6em;text-align:center}
.subcaption{text-align:center}
img.fuv-rendered-image.tamanho-natural{width:var(--fig-w)!important;max-width:100%;height:auto}
.fuv-referencias{margin:1.4em 0}
.bib-item{margin:0 0 .85em;padding-left:1.6em;text-indent:-1.6em;line-height:1.55}
.bib-item:target{background:var(--areia);border-radius:4px}
.bib-rotulo{font-family:"DejaVu Sans",Arial,sans-serif;font-size:.86em;color:var(--cinza)}
.versalete{font-variant:small-caps}
a.fuv-cit{text-decoration:none;border-bottom:1px dotted currentColor}
footer.fuv-notas{margin-top:2.6em;padding-top:.9em;border-top:1px solid var(--linha);font-size:.88rem;line-height:1.55;color:var(--grafite)}
footer.fuv-notas ol{padding-left:1.4em;margin:0}footer.fuv-notas li{margin:.3em 0}
.fuv-nota-volta{text-decoration:none;color:var(--cinza);margin-left:.2em}
a.footnote{text-decoration:none}
.margin-title{display:block;font-family:"DejaVu Sans",Arial,sans-serif;font-weight:700;color:var(--verde);margin-bottom:.25em}
.margin-warning .margin-title{color:var(--cobre)}
.warning-icon{font:700 1em "DejaVu Sans",Arial,sans-serif;color:var(--cobre);margin-right:.35em}
.proofitem-titulo{margin:1em 0 .35em}.proofitem-titulo::before{content:"";display:inline-block;width:.6em;height:.6em;background:var(--cobre);margin-right:.8em;vertical-align:.05em}
.fuv-ornamento{text-align:center;color:var(--cobre);letter-spacing:.4em;margin:1.6em 0}
.fuv-summary{margin:2em 0;padding:18px 20px;background:var(--marfim);border-top:2px solid var(--verde)}.summary-title{font:700 1.05rem "DejaVu Sans",Arial,sans-serif;color:var(--verde);margin-bottom:10px}.fuv-exercises{margin-top:2em}.fuv-box{padding:13px 16px;border:1px solid var(--linha);background:var(--marfim);border-radius:4px}

.MathJax,.MathJax_SVG,mjx-container[jax="CHTML"]{max-width:100%}.displaymath,.equation,.math{overflow-x:auto;overflow-y:hidden;text-align:center;margin:1.2em 0}mjx-container[jax="CHTML"][display="true"]{overflow-x:auto;overflow-y:hidden;padding:.08em 0}

.interactive-card{clear:both;margin:34px 0;padding:18px 18px 14px;background:var(--marfim);border:1px solid var(--linha);border-radius:14px}.interactive-title{font-family:"DejaVu Sans",Arial,sans-serif;font-weight:700;color:var(--verde);margin:0 0 2px}.interactive-subtitle{font-family:"DejaVu Sans",Arial,sans-serif;font-size:.78rem;color:var(--cinza);margin:0 0 12px}.interactive-card svg{width:100%;height:auto;display:block;background:rgba(255,255,255,.36);border-radius:10px}.controls{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;margin-top:12px;font-family:"DejaVu Sans",Arial,sans-serif;font-size:.8rem}.controls button{border:0;border-radius:9px;padding:8px 13px;background:var(--verde);color:white;cursor:pointer}.controls input{width:100%}.formula-line{text-align:center;margin-top:10px;font-size:.95rem}
.fuv-animation-block{clear:both;width:min(100%,var(--figure-wide));max-width:var(--figure-wide);margin:30px auto}
.fuv-animation-frame{display:block;width:100%;max-width:100%;height:720px;border:0;border-radius:14px;background:var(--marfim)}
.animation-figure{float:none!important;width:min(100%,var(--figure-wide))!important;max-width:var(--figure-wide)!important;margin:30px auto!important}
.animation-figure .fuv-animation-block{width:100%;margin:0 auto}
@media (max-width:860px){.fuv-animation-frame{border-radius:10px}.fuv-animation-block{width:100%}.animation-figure{width:100%!important}}
.mobile-toggle{display:none}

@media (max-width:1750px){.paper{max-width:1100px;padding-left:46px;padding-right:46px}.margin-figure{float:none;width:min(465px,100%);margin:24px auto}.margin-note{float:none;width:auto;margin:18px 0}}
@media (max-width:860px){.sidebar{transform:translateX(-100%);transition:.2s;width:285px}.sidebar.open{transform:translateX(0)}main.content{margin-left:0}.paper{padding:62px 24px 72px}.mobile-toggle{display:block;position:fixed;top:12px;left:12px;z-index:30;border:0;border-radius:9px;background:var(--verde);color:white;padding:9px 12px;font-family:"DejaVu Sans",Arial,sans-serif}.margin-figure{float:none;width:min(100%,420px);margin:24px auto}.wide-figure{width:100%;margin-left:0}h1{font-size:2.2rem}.epigraph{margin-left:12%}}

/* v6.0: livro completo / partes / elementos marginais genéricos */
.scope-label{font:600 .72rem/1.35 "DejaVu Sans",Arial,sans-serif;color:#c8d6d4;border-top:1px solid rgba(255,255,255,.16);padding-top:12px;margin:-10px 0 20px;text-transform:none}
.toc-part{font:700 .69rem/1.25 "DejaVu Sans",Arial,sans-serif;text-transform:uppercase;letter-spacing:.11em;color:#d8b59f;margin:28px 10px 8px;padding-top:12px;border-top:1px solid rgba(255,255,255,.12)}
.fuv-part{margin:3.8em 0 2.2em;padding:18px 0 13px;border-top:1px solid var(--linha);border-bottom:1px solid var(--linha)}
.fuv-part-kicker{font:700 .72rem/1.2 "DejaVu Sans",Arial,sans-serif;text-transform:uppercase;letter-spacing:.14em;color:var(--cobre);margin-bottom:6px}
.fuv-part-title{font:700 1.65rem/1.2 "DejaVu Sans",Arial,sans-serif;color:var(--verde)}
.margin-element{float:right;width:calc(var(--figure-margin) * .75);margin:5px -495px 22px 32px;font-size:.82rem;line-height:1.5}
.margin-element .fuv-rendered-image{display:block;width:100%!important;max-width:none;height:auto;margin:0 auto}
.margin-element .caption{font-size:.76rem}
@media (max-width:1750px){.margin-element{float:none;width:min(var(--figure-margin),100%);margin:24px auto}}
@media (max-width:860px){.margin-element{float:none;width:min(100%,420px);margin:24px auto}}

/* v6.3: site multipágina */
.sidebar .brand{display:block;color:white;text-decoration:none}
.toc a.local-section{padding-left:22px;font-size:.82rem;color:#dbe6e3}
.toc a.sub{padding-left:34px}.toc a.local-subsubsection{display:none!important}
.chapter-pager{display:flex;justify-content:space-between;gap:24px;margin-top:4em;padding-top:1.2em;border-top:1px solid var(--linha);font:600 .88rem/1.4 "DejaVu Sans",Arial,sans-serif}
.chapter-pager a{max-width:48%}.chapter-pager .next{margin-left:auto;text-align:right}
.book-index h1{margin-bottom:.25em}.index-subtitle{font-family:"DejaVu Sans",Arial,sans-serif;color:var(--cinza);margin-bottom:2.5em}.index-part{font-size:1.25rem;color:var(--verde);border-bottom:1px solid var(--linha);padding-bottom:.4em;margin-top:2.5em}.index-chapter{display:grid;grid-template-columns:3.2rem 1fr;align-items:baseline;gap:.7rem;padding:.72rem .35rem;border-bottom:1px solid #ece9e1;font-family:"DejaVu Sans",Arial,sans-serif;text-decoration:none}.index-chapter:hover{background:var(--marfim);text-decoration:none}.index-chapter-number{font-weight:700;color:var(--cobre);font-size:1.08rem}.index-chapter-title{font-weight:650;color:var(--grafite)}
@media (max-width:860px){.chapter-pager{flex-direction:column}.chapter-pager a{max-width:100%}.chapter-pager .next{text-align:left;margin-left:0}.index-chapter{grid-template-columns:2.6rem 1fr}}

/* v6.4: abertura com capa + sumário e divisão robusta por capítulo */
.landing-page{min-height:100vh;background:var(--areia);font-size:16px}
.landing-shell{min-height:100vh;display:grid;grid-template-columns:minmax(360px,43vw) minmax(440px,1fr);gap:0}
.web-cover{position:sticky;top:0;min-height:100vh;padding:8vh clamp(42px,6vw,92px) 7vh;background:var(--verde);color:white;display:flex;flex-direction:column;align-items:flex-start;overflow:hidden}
.web-cover:before{content:"";position:absolute;inset:auto -18% -12% 18%;height:46%;border:1px solid rgba(201,130,91,.48);border-radius:50% 50% 0 0;transform:rotate(-8deg)}
.web-cover:after{content:"";position:absolute;width:58%;aspect-ratio:1;right:-22%;top:14%;border:1px solid rgba(255,255,255,.13);border-radius:50%}
.cover-kicker{position:relative;z-index:1;font:700 .73rem/1.2 "DejaVu Sans",Arial,sans-serif;letter-spacing:.22em;color:#d7e2df;margin-bottom:auto}
.web-cover h1{position:relative;z-index:1;color:white;font-size:clamp(3.1rem,5.1vw,5.8rem);line-height:.96;letter-spacing:-.045em;max-width:8.5em;margin:0 0 26px}
.web-cover h1:after{display:none}
.cover-rule{position:relative;z-index:1;width:84px;height:3px;background:var(--cobre);margin:0 0 22px}
.cover-subtitle{position:relative;z-index:1;font:500 clamp(1.05rem,1.6vw,1.35rem)/1.4 "DejaVu Sans",Arial,sans-serif;color:#e3ecea;max-width:24em;margin:0 0 auto}
.cover-author{position:relative;z-index:1;font:700 1.02rem/1.3 "DejaVu Sans",Arial,sans-serif;margin-top:56px}
.cover-date{position:relative;z-index:1;font:400 .76rem/1.35 "DejaVu Sans",Arial,sans-serif;color:#bfd0cc;margin-top:6px}
.cover-start{position:relative;z-index:1;margin-top:28px;display:inline-block;padding:10px 0;border-bottom:2px solid var(--cobre);color:white!important;font:700 .86rem/1.2 "DejaVu Sans",Arial,sans-serif;text-decoration:none!important}
.landing-toc{min-height:100vh;background:var(--paper);padding:clamp(54px,7vw,96px) clamp(42px,7vw,110px) 90px;overflow:auto}
.landing-toc-head{display:flex;align-items:baseline;justify-content:space-between;gap:24px;padding-bottom:18px;border-bottom:2px solid var(--cobre);margin-bottom:34px}
.toc-kicker{font:700 clamp(1.8rem,2.8vw,2.7rem)/1.1 "DejaVu Sans",Arial,sans-serif;color:var(--grafite)}
.toc-scope{font:500 .78rem/1.2 "DejaVu Sans",Arial,sans-serif;color:var(--cinza)}
.landing-toc .index-part{margin-top:2.25em;font-size:1rem;text-transform:uppercase;letter-spacing:.09em;border-bottom:0;padding-bottom:.25em;color:var(--verde)}
.landing-toc .index-chapter{grid-template-columns:3rem 1fr;padding:.78rem .3rem;border-bottom:1px solid #e8e4db}
.landing-toc .index-chapter:hover{background:var(--marfim);transform:translateX(3px)}
.chapter-pager{align-items:center}
.chapter-pager .toc-home{flex:0 0 auto;text-align:center;color:var(--cobre)}
.chapter-pager .previous,.chapter-pager .next{flex:1 1 0}
@media (max-width:980px){.landing-shell{grid-template-columns:1fr}.web-cover{position:relative;min-height:72vh;padding:58px 34px 52px}.cover-kicker{margin-bottom:20vh}.cover-subtitle{margin-bottom:30px}.cover-author{margin-top:24px}.landing-toc{min-height:auto;padding:52px 26px 72px}.landing-toc-head{align-items:flex-start;flex-direction:column;gap:8px}.chapter-pager .toc-home{order:3}.chapter-pager{align-items:flex-start}}

/* v6.8: tabelas editoriais LaTeX -> HTML semântico */
.fuv-table-wrap{width:100%;overflow-x:auto;margin:1.5em auto 1.8em;padding:2px 0 5px}
.fuv-table{border-collapse:collapse;border-spacing:0;width:auto;max-width:100%;margin:0 auto;font-family:"DejaVu Sans",Arial,sans-serif;font-size:.92rem;line-height:1.45;color:var(--grafite);background:white}
.fuv-table th,.fuv-table td{padding:.48em .78em;vertical-align:top;border-bottom:1px solid #e8e4db;white-space:normal}
.fuv-table th{font-weight:700;color:var(--verde);border-top:1.5px solid var(--verde);border-bottom:1.5px solid var(--linha)}
.fuv-table tr:last-child td{border-bottom:1.5px solid var(--verde)}
.fuv-table .align-left{text-align:left}.fuv-table .align-center{text-align:center}.fuv-table .align-right{text-align:right}
.fuv-table mjx-container{margin:0!important}
.table-missing{padding:12px 14px;border:1px dashed var(--linha);background:var(--marfim);font: .8rem/1.4 "DejaVu Sans",Arial,sans-serif;color:var(--cinza)}
@media (max-width:860px){.fuv-table{font-size:.86rem}.fuv-table th,.fuv-table td{padding:.42em .58em}}

/* v6.15: saneamento final de navegação/layout */
.chapter-opening-kicker{
  display:inline-flex;align-items:center;
  font:700 .72rem/1.2 "DejaVu Sans",Arial,sans-serif;
  text-transform:uppercase;letter-spacing:.14em;
  color:var(--marfim);background:var(--verde);
  border-left:4px solid var(--cobre);border-radius:2px;
  padding:.48em .82em;margin:1.55em 0 .65em;
}
h1.chapter-heading{margin-top:0}
.fuv-item-letter{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:1.55em;height:1.55em;padding:0 .28em;margin:0 .22em 0 .08em;
  border:1px solid var(--cobre);border-radius:3px;color:var(--verde);
  font:700 .78em/1 "DejaVu Sans",Arial,sans-serif;vertical-align:.08em;
}
.fuv-minipage{vertical-align:top;max-width:100%;margin:.3em 0}
.fuv-env.exercise{counter-reset:fuv-question}
.fuv-question-marker{display:inline-flex;align-items:center;justify-content:center;min-width:1.55em;height:1.55em;margin:.45em .42em .1em 0;border:1px solid var(--cobre);border-radius:50%;color:var(--verde);font:700 .76em/1 "DejaVu Sans",Arial,sans-serif;vertical-align:.08em;counter-increment:fuv-question}
.fuv-question-marker::before{content:counter(fuv-question, lower-alpha)}
.fuv-env.exercise p:has(.fuv-question-marker){margin:.36em 0}
.fuv-minipage-split{display:inline-block;width:48%;margin-right:2%;}
.fuv-minipage-split:nth-of-type(even){margin-right:0}
.fuv-minipage-full{display:block;width:100%}
@media (max-width:860px){.fuv-minipage-split{display:block;width:100%;margin-right:0}}

/* Autor e versão devem aparecer na primeira dobra da capa. */
.cover-kicker{margin-bottom:clamp(48px,10vh,105px)}
.cover-subtitle{margin-bottom:0}
.cover-author{margin-top:28px}
.cover-date{margin-top:7px}
.cover-start{margin-top:auto}

/* Um pouco mais de largura útil em notebooks/desktops médios. */
@media (max-width:1750px) and (min-width:861px){
  .paper{max-width:1240px;padding-left:34px;padding-right:34px}
}

/* ------------------------------------------------------------------
   Coluna de texto a 70% e goteira a 80%.
   >=1751 px: coluna 938 -> 657 px, goteira 500 -> 400 px; padding-left 62.
   861-1750 px: coluna max. 1172 -> 820 px (nessa faixa nao ha goteira).
   <=860 px: inalterado.
   O que mora na goteira (figuras, elementos e notas de margem) escala x0,8.
   Paineis de animacao conservam a largura anterior (--anim-w) e saem da
   coluna, centrados nela; so encolhem quando nao cabem na tela.
   ------------------------------------------------------------------ */
:root{--anim-w:938px}
@media (min-width:1751px){
  .paper{max-width:1119px;padding-right:400px}
  .margin-figure,.margin-element{width:calc(var(--figure-margin) * .6);margin-right:-396px}
  .margin-note{width:256px;margin-right:-292px}
}
@media (max-width:1750px) and (min-width:861px){
  :root{--anim-w:min(1120px, 100vw - 338px)}
  .paper{max-width:888px}
}
.animation-figure,.fuv-animation-block{
  width:var(--anim-w)!important;max-width:none!important;
  margin-left:calc((100% - var(--anim-w)) / 2)!important;
  margin-right:calc((100% - var(--anim-w)) / 2)!important;
}
.animation-figure .fuv-animation-block{width:100%!important;max-width:100%!important;margin-left:0!important;margin-right:0!important}
@media (max-width:860px){
  .animation-figure,.fuv-animation-block{width:100%!important;margin-left:0!important;margin-right:0!important}
}

/* Espaco vertical das equacoes centradas a ~70% do anterior: entre o texto
   e a formula, ~42 px -> ~30 px. As duas margens (a do bloco .displaymath e a
   do mjx-container, que nao colapsam entre si porque o bloco tem overflow)
   escalam pelo mesmo fator, preservando a proporcao entre equacoes seguidas. */
.displaymath,.equation{margin-top:.79em;margin-bottom:.79em}
.displaymath mjx-container[jax="CHTML"][display="true"],
.equation mjx-container[jax="CHTML"][display="true"]{margin:.66em 0}

/* ------------------------------------------------------------------
   livros-html: soluções e dicas recolhíveis dentro dos exercícios.
   ------------------------------------------------------------------ */
details.fuv-resposta{margin:.75em 0 .15em;padding-top:.35em;border-top:1px dashed var(--linha)}
details.fuv-resposta>summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:.45em;font:600 .8rem/1.4 "DejaVu Sans",Arial,sans-serif;color:var(--verde)}
details.fuv-resposta>summary::-webkit-details-marker{display:none}
details.fuv-resposta>summary::before{content:"▸";color:var(--cobre);transition:transform .15s}
details.fuv-resposta[open]>summary::before{transform:rotate(90deg)}
details.fuv-resposta>summary:hover{text-decoration:underline}
.fuv-resposta-corpo{margin-top:.55em;padding:.1em 0 .1em .95em;border-left:2px solid var(--cobre)}
.fuv-block{margin:1em 0}
@media print{details.fuv-resposta{display:none}}

/* ------------------------------------------------------------------
   livros-html: página da coleção.
   ------------------------------------------------------------------ */
.colecao-page{background:var(--paper)}
.colecao{max-width:1180px;margin:0 auto;padding:64px 28px 90px}
.colecao-cabecalho{margin-bottom:42px}
.colecao-titulo{position:relative;border-bottom:2px solid var(--cobre);margin:.2em 0 1.15em;padding:0 0 18px}
.colecao-cabecalho h1{font-size:clamp(2.2rem,4vw,3.4rem);line-height:1.05;margin:0;color:var(--verde)}
.colecao-cabecalho h1:after{display:none}
.colecao-guaxinim{position:absolute;right:0;bottom:-21px;width:clamp(138px,16vw,190px);height:auto;display:block;z-index:1;pointer-events:none;user-select:none}
.colecao-cabecalho p{max-width:46em;color:var(--cinza);margin:0}
.colecao-cabecalho .cover-kicker{color:var(--cobre);font:700 .78rem/1 "DejaVu Sans",Arial,sans-serif;letter-spacing:.22em}
.colecao-grade{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:28px}
.colecao-livro{display:grid;grid-template-columns:118px 1fr;gap:18px;padding:18px;background:white;border:1px solid var(--linha);border-top:4px solid var(--acento,var(--verde));border-radius:6px}
.colecao-capa{width:118px;height:auto;border-radius:3px;box-shadow:0 2px 10px rgba(0,0,0,.12);display:block}
.colecao-capa-vazia{height:166px;display:flex;align-items:flex-end;padding:10px;background:var(--acento,var(--verde));color:white;font:700 .82rem/1.2 "DejaVu Sans",Arial,sans-serif}
.colecao-texto h2{font-size:1.18rem;line-height:1.25;margin:0 0 .2em;color:var(--acento,var(--verde))}
.colecao-sub{margin:0 0 .3em;font-style:italic;color:var(--cinza);font-size:.9rem}
.colecao-autores{margin:0 0 .6em;font:600 .78rem/1.4 "DejaVu Sans",Arial,sans-serif;color:var(--grafite)}
.colecao-desc{margin:0 0 .8em;font-size:.88rem;line-height:1.55;color:var(--grafite)}
.colecao-links{font:600 .8rem/1.4 "DejaVu Sans",Arial,sans-serif}
.colecao-links a{color:var(--acento,var(--verde))}
.colecao-ler{color:var(--cobre)!important}
@media (max-width:520px){.colecao-titulo{padding-right:92px;padding-bottom:12px}.colecao-guaxinim{width:104px;right:-4px}.colecao-livro{grid-template-columns:84px 1fr}.colecao-capa{width:84px}.colecao-capa-vazia{height:118px}}

/* Capa do livro: "Começar leitura" e "Baixar PDF" lado a lado, logo abaixo do
   autor (na primeira dobra, mesmo quando o sumário é longo). */
.cover-acoes{position:relative;z-index:1;margin-top:36px;display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 30px}
.cover-acoes .cover-start{margin-top:0}
.cover-pdf{display:inline-block;padding:10px 0;border-bottom:2px solid rgba(255,255,255,.35);color:#e3ecea!important;font:700 .86rem/1.2 "DejaVu Sans",Arial,sans-serif;text-decoration:none!important}
.cover-pdf:hover{border-bottom-color:var(--cobre)}

/* Bases Matemáticas: \minisec e "Exercícios suplementares". */
p.minisec{margin:1.6em 0 .4em;font:700 1rem/1.35 "DejaVu Sans",Arial,sans-serif;color:var(--verde)}
.fuv-exercises-titulo{font:700 1.05rem "DejaVu Sans",Arial,sans-serif;color:var(--verde);margin:0 0 .8em;padding-bottom:6px;border-bottom:1px solid var(--linha)}
ol.alfabetica{list-style-type:lower-alpha}