@import url('https://fonts.googleapis.com/css2?family=Archivo+Black&family=IBM+Plex+Mono:wght@400;600&family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --ink: #07111f;
  --navy: #0b1f36;
  --blue: #1b54f2;
  --sky: #74a2ff;
  --red: #ef3e36;
  --coral: #ff8a84;
  --lime: #d9ff43;
  --amber: #c8811a;
  --paper: #f2f0e9;
  --white: #fffefa;
  --muted: #687386;
  --line: rgba(7, 17, 31, .16);
  --max: 1180px;
  --display: "Archivo Black", Impact, sans-serif;
  --sans: Inter, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 62px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.mono, .eyebrow, .kicker, .chapter-no, .source-chip { font-family: var(--mono); }
h1, h2, h3 { margin-top: 0; letter-spacing: -.035em; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 60; padding: 10px 16px; background: var(--lime); color: var(--ink); font-weight: 700; }
.progress { position: fixed; z-index: 50; inset: 0 auto auto 0; height: 3px; width: 0; background: var(--lime); }

/* ---------- capa ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: white;
  background: var(--ink);
  border-bottom: 12px solid var(--lime);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}
.hero::after {
  content: "8";
  position: absolute;
  right: -1vw;
  top: 2vh;
  color: transparent;
  -webkit-text-stroke: 2px rgba(217,255,67,.22);
  font: 400 min(46vw, 620px)/.8 var(--display);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; padding: 74px 0 60px; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.brand img { width: 38px; height: 38px; }
.brand a { color: white; font: 600 13px/1 var(--mono); letter-spacing: .12em; text-decoration: none; text-transform: uppercase; }
.brand span { color: #94a3bb; font: 12px/1 var(--mono); }
.eyebrow { color: var(--lime); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; }
h1 {
  max-width: 15ch;
  margin: 20px 0 24px;
  font: 400 clamp(48px, 7.4vw, 108px)/.86 var(--display);
  text-transform: uppercase;
}
h1 em { display: block; color: var(--lime); font-style: normal; }
.deck { max-width: 62ch; margin: 0; color: #d3dcea; font-size: clamp(17px, 1.5vw, 21px); line-height: 1.5; }
.deck strong { color: white; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 46px; align-items: start; }
.hero-flash { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.hero-flash b { display: flex; align-items: baseline; gap: 8px; padding: 9px 14px; border: 1px solid rgba(255,255,255,.24); font-size: 13px; font-weight: 500; color: #cfd9e8; }
.hero-flash s { color: var(--lime); font: 400 19px/1 var(--display); text-decoration: none; }
.case-file { margin: 0; padding: 22px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.16); font-family: var(--mono); font-size: 12.5px; }
.case-file > div { display: flex; justify-content: space-between; gap: 14px; padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.case-file > div:last-child { border-bottom: 0; }
.case-file dt { color: #94a3bb; }
.case-file dd { margin: 0; color: white; text-align: right; }

/* ---------- sumário fixo ---------- */
.toc { position: sticky; top: 0; z-index: 40; background: rgba(7,17,31,.97); border-bottom: 1px solid rgba(255,255,255,.14); backdrop-filter: blur(10px); }
.toc .wrap { display: flex; align-items: center; gap: 20px; min-height: 52px; }
.toc b { color: var(--lime); font: 600 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.toc-links { display: flex; gap: 16px; overflow-x: auto; scrollbar-width: none; }
.toc-links::-webkit-scrollbar { display: none; }
.toc-links a { color: #b9c5d8; font: 12px/1 var(--mono); text-decoration: none; white-space: nowrap; padding: 6px 0; border-bottom: 2px solid transparent; }
.toc-links a:hover { color: white; }
.toc-links a.on { color: var(--lime); border-bottom-color: var(--lime); }

/* ---------- veredito ---------- */
.verdict { padding: 54px 0; background: var(--lime); color: var(--ink); }
.verdict h2 { margin-bottom: 24px; font: 400 clamp(26px, 3vw, 40px)/1 var(--display); text-transform: uppercase; }
.verdict-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.verdict-card { padding: 20px; background: rgba(7,17,31,.06); border: 1px solid rgba(7,17,31,.22); }
.verdict-card strong { display: block; margin: 10px 0 8px; font: 400 clamp(28px, 3vw, 40px)/1 var(--display); }
.verdict-card p { margin: 0; font-size: 14.5px; line-height: 1.45; }

/* ---------- capítulos ---------- */
.chapter { padding: 86px 0; border-bottom: 1px solid var(--line); background: var(--white); }
.chapter.alt { background: var(--paper); }
.chapter.dark { background: var(--navy); color: white; border-bottom-color: rgba(255,255,255,.14); }
.chapter.deep { background: var(--ink); color: white; border-bottom-color: rgba(255,255,255,.14); }
.chapter-head { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 34px; margin-bottom: 44px; }
.chapter-no { padding-top: 10px; color: var(--blue); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.dark .chapter-no, .deep .chapter-no { color: var(--lime); }
h2 { margin-bottom: 16px; font: 400 clamp(34px, 5vw, 66px)/.98 var(--display); text-transform: uppercase; }
h2 em { color: var(--blue); font-style: normal; }
.dark h2 em, .deep h2 em { color: var(--lime); }
h3 { font-size: 22px; line-height: 1.2; }
.lead { max-width: 70ch; margin: 0; color: var(--muted); font-size: 19px; line-height: 1.5; }
.dark .lead, .deep .lead { color: rgba(255,255,255,.74); }
.prose { max-width: 72ch; }
.prose p { margin: 0 0 18px; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { font-weight: 700; }
.dark .prose, .deep .prose { color: rgba(255,255,255,.86); }

/* ---------- figuras ---------- */
.figure { margin: 34px 0 0; background: var(--white); border: 1px solid var(--line); }
.dark .figure, .deep .figure { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.18); }
.figure-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px; padding: 16px 22px; border-bottom: 1px solid var(--line); }
.dark .figure-head, .deep .figure-head { border-bottom-color: rgba(255,255,255,.16); }
.figure-head h3 { margin: 0; font-size: 19px; }
.figure-head span { color: var(--muted); font: 11.5px/1 var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.dark .figure-head span, .deep .figure-head span { color: var(--lime); }
.canvas { padding: 18px 22px; }
.canvas svg { display: block; width: 100%; height: auto; }
.figure figcaption { padding: 14px 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; line-height: 1.5; }
.dark .figure figcaption, .deep .figure figcaption { border-top-color: rgba(255,255,255,.16); color: rgba(255,255,255,.66); }
.figure figcaption b { color: var(--ink); }
.dark .figure figcaption b, .deep .figure figcaption b { color: white; }

/* Figura desenhada para fundo claro, usada dentro de capítulo escuro. */
.dark .figure.on-light, .deep .figure.on-light { background: var(--white); border-color: var(--white); }
.dark .figure.on-light .figure-head, .deep .figure.on-light .figure-head { border-bottom-color: var(--line); }
.dark .figure.on-light .figure-head h3, .deep .figure.on-light .figure-head h3 { color: var(--ink); }
.dark .figure.on-light .figure-head span, .deep .figure.on-light .figure-head span { color: var(--muted); }
.dark .figure.on-light figcaption, .deep .figure.on-light figcaption { border-top-color: var(--line); color: var(--muted); }
.dark .figure.on-light figcaption b, .deep .figure.on-light figcaption b { color: var(--ink); }

/* Figura desenhada para fundo escuro, usada dentro de capítulo claro. */
.figure.on-dark { background: var(--navy); border-color: var(--navy); }
.figure.on-dark .figure-head { border-bottom-color: rgba(255,255,255,.18); }
.figure.on-dark .figure-head h3 { color: white; }
.figure.on-dark .figure-head span { color: var(--lime); }
.figure.on-dark figcaption { border-top-color: rgba(255,255,255,.18); color: rgba(255,255,255,.68); }
.figure.on-dark figcaption b { color: white; }

/* ---------- indicadores ---------- */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin-top: 30px; }
.kpis article { padding: 20px; background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--blue); }
.dark .kpis article, .deep .kpis article { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.16); border-top-color: var(--lime); }
.kpis b { display: block; font: 400 clamp(28px, 3.2vw, 42px)/1 var(--display); }
.kpis span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; line-height: 1.4; }
.dark .kpis span, .deep .kpis span { color: rgba(255,255,255,.68); }
.kpis .red { color: var(--red); } .kpis .blue { color: var(--blue); } .kpis .lime { color: var(--lime); } .kpis .amber { color: var(--amber); }

/* ---------- fórmula ---------- */
.formula { margin-top: 32px; padding: 30px 32px; background: var(--ink); color: white; border-left: 6px solid var(--lime); }
.formula-line { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px; margin: 6px 0 26px; font-family: var(--mono); font-size: clamp(18px, 2.4vw, 30px); }
.formula-line .sym { color: var(--lime); font-weight: 600; }
.formula-line .op { color: #8b96ab; }
.formula-legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.18); }
.formula-legend div b { display: block; color: var(--lime); font-family: var(--mono); font-size: 15px; }
.formula-legend div span { display: block; margin-top: 5px; color: rgba(255,255,255,.72); font-size: 14px; line-height: 1.45; }
.formula-note { margin: 22px 0 0; color: rgba(255,255,255,.8); font-size: 15px; }
.formula-note b { color: var(--lime); }

/* ---------- tabelas ---------- */
.table-wrap { margin-top: 30px; overflow-x: auto; border: 1px solid var(--line); background: var(--white); }
.dark .table-wrap, .deep .table-wrap { border-color: rgba(255,255,255,.18); background: rgba(255,255,255,.04); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
caption { padding: 14px 18px; color: var(--muted); font: 11.5px/1.4 var(--mono); letter-spacing: .07em; text-align: left; text-transform: uppercase; border-bottom: 1px solid var(--line); }
th, td { padding: 12px 16px; border-bottom: 1px solid var(--line); text-align: left; }
.dark th, .dark td, .deep th, .deep td { border-bottom-color: rgba(255,255,255,.12); }
thead th { background: var(--ink); color: white; font: 600 12px/1.3 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
td.num, th.num { text-align: right; font-family: var(--mono); }
tbody tr:last-child td { border-bottom: 0; }
tr.highlight td { background: rgba(217,255,67,.24); font-weight: 700; }
.pos { color: var(--red); font-weight: 700; }
.neg { color: var(--blue); font-weight: 700; }

/* ---------- avisos ---------- */
.callout { margin-top: 30px; padding: 24px 26px; background: var(--white); border: 1px solid var(--line); border-left: 6px solid var(--blue); }
.dark .callout, .deep .callout { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.18); border-left-color: var(--lime); }
.callout.danger { border-left-color: var(--red); background: #fff4f2; }
.dark .callout.danger, .deep .callout.danger { background: rgba(239,62,54,.12); border-left-color: var(--red); }
.callout p { margin: 8px 0 0; }
.callout p:first-of-type { margin-top: 10px; }
.stamp { display: inline-block; padding: 5px 9px; border: 1px solid currentColor; font: 600 10.5px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.stamp.fact { color: var(--blue); }
.stamp.inference { color: var(--amber); }
.stamp.hypothesis { color: var(--red); }
.dark .stamp.fact, .deep .stamp.fact { color: var(--sky); }
.dark .stamp.inference, .deep .stamp.inference { color: var(--lime); }

.banner { margin-top: 30px; padding: 26px 30px; background: var(--lime); color: var(--ink); }
.banner h3 { max-width: 30ch; margin: 0; font: 400 clamp(22px, 3vw, 36px)/1.08 var(--display); text-transform: uppercase; }

/* ---------- prova visual ---------- */
.evidence { margin: 30px 0 0; border: 1px solid var(--line); background: white; }
.evidence img { width: 100%; }
.evidence figcaption { padding: 12px 16px; border-top: 1px solid var(--line); color: var(--muted); font: 12.5px/1.5 var(--mono); }

/* ---------- método e fontes ---------- */
.rail { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); margin-top: 30px; counter-reset: step; }
.rail div { padding: 22px; border: 1px solid rgba(255,255,255,.18); counter-increment: step; }
.rail div::before { content: "0" counter(step); display: block; margin-bottom: 16px; color: var(--lime); font: 400 26px var(--display); }
.rail b { display: block; margin-bottom: 6px; }
.rail p { margin: 0; color: rgba(255,255,255,.7); font-size: 14px; }
.source-list { list-style: none; margin: 30px 0 0; padding: 0; border-top: 1px solid var(--line); }
.source-list li { display: grid; grid-template-columns: 54px minmax(0, 1fr) auto; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.source-chip { color: var(--blue); font-size: 11px; }
.source-list small { color: var(--muted); }
.footnote { margin-top: 30px; color: var(--muted); font-size: 13.5px; }

footer { padding: 44px 0; background: var(--ink); color: #b8c4d6; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 22px; align-items: center; }
footer b { color: white; }
footer a { color: var(--lime); }

.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .chapter-head { grid-template-columns: 1fr; gap: 10px; }
  .chapter { padding: 60px 0; }
  .formula-line { font-size: 17px; gap: 8px; }
  .source-list li { grid-template-columns: 42px 1fr; }
  .source-list small { grid-column: 2; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { width: min(100% - 24px, var(--max)); }
  .canvas { padding: 12px 10px; }
  .hero-content { padding: 52px 0 42px; }
  .verdict, .chapter { padding: 46px 0; }
}