:root {
  --tinta:     #1B2430;
  --papel:     #E6E2D6;
  --verdigris: #2E6F63;
  --sinal:     #4FD1E8;
  --sepia:     #9A8C73;

  --fg: var(--tinta);
  --accent: var(--verdigris);
  --muted: #5B5546;
  --rule: rgba(27, 36, 48, 0.22);
  --rule-soft: rgba(27, 36, 48, 0.1);

  --display: "Libre Caslon Display", "Times New Roman", serif;
  --corpo: "Spectral", Georgia, serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --t-12: 12px;
  --t-14: 14px;
  --t-18: 18px;
  --t-24: 24px;
  --t-40: clamp(28px, 3.2vw, 40px);
  --t-72: clamp(40px, 6vw, 72px);
  --t-120: clamp(44px, 8.4vw, 120px);

  --gutter: 24px;
  --respiro: 160px;
  --medida: 68ch;
  --rail-w: 210px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--papel);
  color: var(--fg);
  font-family: var(--corpo);
  font-size: var(--t-18);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
em { font-style: italic; }

::selection { background: var(--accent); color: var(--papel); }

.backdrop { position: fixed; inset: 0; z-index: -1; }
.backdrop > * { position: absolute; inset: 0; }

.backdrop-paper {
  background-color: var(--papel);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.055'/%3E%3C/svg%3E");
}

.backdrop-ink { background: var(--tinta); opacity: 0; }

.backdrop-grid {
  opacity: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(79, 209, 232, 0.16) 1px, transparent 0);
  background-size: 32px 32px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 12px 18px;
  background: var(--tinta);
  color: var(--papel);
  font-family: var(--mono);
  font-size: var(--t-12);
}
.skip:focus { left: 12px; top: 12px; }

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.rail {
  position: fixed;
  top: 50%;
  left: 40px;
  transform: translateY(-50%);
  z-index: 20;
  width: var(--rail-w);
  color: var(--fg);
  transition: color 0.6s ease;
}

.rail-title,
.rail-num,
.rail-label {
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.rail-title {
  margin: 0 0 20px;
  color: var(--muted);
  transition: color 0.6s ease;
}

.rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 14px;
  border-left: 1px solid var(--rule-soft);
}

.rail-list a {
  position: relative;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  padding: 9px 0;
  color: inherit;
  text-decoration: none;
  opacity: 0.42;
  transition: opacity 0.4s ease;
}

.rail-list a::before {
  content: "";
  position: absolute;
  left: -15px;
  top: 50%;
  width: 7px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.rail-list a:hover,
.rail-list a.is-active { opacity: 1; }
.rail-list a:hover::before,
.rail-list a.is-active::before { transform: scaleX(1); }

.rail-list a.is-active .rail-num { color: var(--accent); }
.rail-label { line-height: 1.35; letter-spacing: 0.08em; text-transform: none; }

.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  display: none;
  justify-content: center;
  gap: 2px;
  padding: 10px 8px calc(10px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--papel) 88%, transparent);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--rule-soft);
}

.dock a {
  padding: 6px 9px;
  color: var(--tinta);
  font-family: var(--mono);
  font-size: var(--t-12);
  text-decoration: none;
  opacity: 0.4;
}

.dock a.is-active { opacity: 1; color: var(--verdigris); }

body.is-modern .dock {
  background: color-mix(in srgb, var(--tinta) 88%, transparent);
  border-top-color: rgba(230, 226, 214, 0.14);
}
body.is-modern .dock a { color: var(--papel); }
body.is-modern .dock a.is-active { color: var(--sinal); }

body.is-modern .rail { color: var(--papel); }
body.is-modern .rail-title { color: rgba(230, 226, 214, 0.5); }
body.is-modern .rail-list { border-left-color: rgba(230, 226, 214, 0.16); }
body.is-modern .rail-list a.is-active .rail-num { color: var(--sinal); }

.section {
  position: relative;
  padding: var(--respiro) 0;
}

section[data-era="moderna"],
.section-footer {
  --fg: var(--papel);
  --accent: var(--sinal);
  --muted: rgba(230, 226, 214, 0.6);
  --rule: rgba(230, 226, 214, 0.24);
  --rule-soft: rgba(230, 226, 214, 0.12);
  color: var(--papel);
}

.wrap {
  width: min(1080px, calc(100% - 96px));
  margin-inline: auto;
  margin-left: max(calc(var(--rail-w) + 96px), calc(50% - 540px));
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}

.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-offset-2 { grid-column: 3 / span 8; }

.section-hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: 120px;
}

.masthead {
  padding-bottom: 10px;
  margin-bottom: 48px;
  border-bottom: 3px double var(--rule);
  text-align: center;
}

.masthead-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid var(--rule-soft);
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.masthead-name {
  margin: 0;
  font-family: var(--display);
  font-size: var(--t-24);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.masthead-sub {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.16em;
  color: var(--muted);
}

.headline {
  margin: 0;
  font-family: var(--display);
  font-size: var(--t-120);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.headline .line { display: block; overflow: hidden; }
.headline .line > span { display: block; }

.hero-standfirst {
  max-width: 54ch;
  margin: 40px 0 0;
  font-size: var(--t-18);
  color: var(--muted);
}

.scroll-cue {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 64px 0 0;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.scroll-cue-line {
  width: 64px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

.datastrip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 64px 0 0;
  padding: 24px 0 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.datastrip-item { padding: 0 24px; border-left: 1px solid var(--rule-soft); }
.datastrip-item:first-child { padding-left: 0; border-left: 0; }

.datastrip-num {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: var(--t-40);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--accent);
}

.datastrip-label {
  margin: 0;
  font-size: var(--t-14);
  line-height: 1.5;
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 20px;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow-center { text-align: center; }

.label {
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.h-display {
  margin: 0 0 24px;
  font-family: var(--display);
  font-size: var(--t-40);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.lede { margin: 0 0 40px; max-width: var(--medida); }
.body { margin: 0 0 20px; max-width: var(--medida); }
.body-wide { max-width: 62ch; }

.label + .body::first-letter {
  float: left;
  font-family: var(--display);
  font-size: 3.1em;
  line-height: 0.82;
  padding: 6px 10px 0 0;
  color: var(--accent);
}

.plate { margin: 0; }

.plate-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--rule);
  padding: 14px;
  color: var(--sepia);
}

.plate-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08) sepia(0.22);
  mix-blend-mode: multiply;
}

.plate-ornament { display: none; position: absolute; inset: 14px; width: auto; height: auto; }
.plate.no-image .plate-img { display: none; }
.plate.no-image .plate-ornament { display: block; }

.plate-caption {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.12em;
  color: var(--muted);
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
  margin: 0;
  padding: 24px 0 0;
  list-style: none;
  border-top: 1px solid var(--rule-soft);
}

.pillar-num {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.pillar-title {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: var(--t-24);
  font-weight: 400;
  letter-spacing: -0.01em;
}

.pillar-text { margin: 0; font-size: var(--t-14); line-height: 1.6; color: var(--muted); }

.hypothesis {
  position: relative;
  font-family: var(--display);
  font-size: var(--t-72);
  max-width: 30ch;
  margin: 0 auto 80px;
  padding-left: 28px;
  border-left: 3px solid var(--accent);
}

.hypothesis-label {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.5;
  color: var(--sepia);
}

.hypothesis-text {
  margin: 0;
  font-family: var(--display);
  font-size: var(--t-72);
  line-height: 1.14;
  letter-spacing: -0.022em;
}

[data-redact] .w {
  position: relative;
  display: inline-block;
  white-space: pre;
}

[data-redact] .bar {
  position: absolute;
  left: -0.06em;
  right: -0.06em;
  top: 0.1em;
  bottom: 0.14em;
  background: #05080C;
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.argument-grid { align-items: start; }

.marginalia {
  padding-right: 24px;
  border-right: 1px solid var(--rule-soft);
  text-align: right;
}

.marginalia-quote { margin: 0; }

.marginalia-text {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: var(--t-18);
  line-height: 1.45;
  font-style: italic;
  color: var(--muted);
}

.marginalia-text::before { content: "\201C"; }
.marginalia-text::after { content: "\201D"; }

.marginalia-source {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--t-12);
  line-height: 1.6;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.marginalia-source cite { font-style: normal; }
.marginalia-source em { font-style: italic; }

.section-errata .wrap {
  width: min(620px, calc(100% - 48px));
  margin-inline: auto;
}

.errata {
  padding: 28px 0;
  border-top: 3px double var(--rule);
  border-bottom: 3px double var(--rule);
}

.errata-label {
  margin: 0 0 20px;
  font-family: var(--mono);
  font-size: var(--t-14);
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
}

.errata-body {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.66;
}

.errata-body:last-child { margin-bottom: 0; }

.ads {
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  column-count: 4;
  column-gap: 28px;
  column-rule: 1px solid var(--rule-soft);
}

.ad {
  break-inside: avoid;
  padding: 0 0 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--rule-soft);
}

.ad-title {
  margin: 0 0 4px;
  font-family: var(--display);
  font-size: var(--t-14);
  font-variant-caps: small-caps;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.ad-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.42;
  text-align: justify;
  hyphens: auto;
  color: var(--muted);
}

.ads-footer {
  margin: 28px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.14em;
  text-align: center;
  color: var(--muted);
}

.refs {
  columns: 2;
  column-gap: 48px;
  margin-top: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}

.ref {
  break-inside: avoid;
  margin-bottom: 32px;
}

.ref-label {
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.ref-text {
  margin: 0 0 10px;
  font-size: var(--t-14);
  line-height: 1.6;
  color: var(--muted);
}

.section-transition {
  min-height: 130svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.transition-line {
  margin: 0 0 6px;
  font-family: var(--display);
  font-size: var(--t-24);
  color: var(--papel);
  opacity: 0.85;
}

.scale-wrap { display: flex; flex-direction: column; gap: 24px; }

.scale { width: 100%; height: auto; color: var(--papel); overflow: visible; }

.scale-beam { transform-origin: 260px 150px; transform: rotate(-9deg); }

.scale-legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  padding-top: 20px;
  border-top: 1px solid var(--rule-soft);
}

.scale-side-right { text-align: right; }

.scale-side-title {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.scale-side-text { margin: 0; font-size: var(--t-14); line-height: 1.6; color: var(--muted); }

.conclusion {
  margin: 0 0 16px;
  max-width: 22ch;
  font-family: var(--display);
  font-size: var(--t-72);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.028em;
}

.conclusion-sub {
  margin: 0 0 48px;
  font-family: var(--mono);
  font-size: var(--t-14);
  letter-spacing: 0.08em;
  color: var(--accent);
}

.section-footer { padding-bottom: 120px; }

.credits {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
  margin: 0 0 48px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}

.credit dt {
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: var(--t-12);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.credit dd {
  margin: 0;
  font-family: var(--display);
  font-size: var(--t-24);
  line-height: 1.2;
}

.colophon {
  margin: 0;
  max-width: 56ch;
  font-size: var(--t-14);
  line-height: 1.6;
  color: var(--muted);
}

html.js .reveal { opacity: 0; }
html.js .headline .line > span { transform: translateY(105%); }

html.js .headline:not(.is-split) { opacity: 0; }

html.failsafe .reveal,
html.failsafe .headline { opacity: 1; }
html.failsafe .headline .line > span { transform: none; }

@media (max-width: 1180px) {
  .rail { display: none; }
  .dock { display: flex; }
  .wrap { width: min(920px, calc(100% - 64px)); margin-inline: auto; }
}

@media (max-width: 1024px) {
  .ads { column-count: 3; }
}

@media (max-width: 860px) {
  :root { --respiro: 96px; --gutter: 20px; }

  .datastrip { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
  .datastrip-item { padding: 0 16px; }
  .datastrip-item:nth-child(odd) { padding-left: 0; border-left: 0; }

  .ads { column-count: 2; column-gap: 20px; }
  .refs { columns: 1; }
  .masthead-meta { flex-wrap: wrap; justify-content: center; gap: 6px 18px; }

  .grid { grid-template-columns: repeat(6, 1fr); }
  .col-4, .col-5, .col-7, .col-8 { grid-column: 1 / -1; }
  .col-offset-2 { grid-column: 1 / -1; }

  .plate { max-width: 260px; }
  .pillars { grid-template-columns: 1fr; gap: 28px; }
  .credits { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }

  .marginalia {
    padding: 0 0 0 20px;
    border-right: 0;
    border-left: 1px solid var(--rule-soft);
    text-align: left;
    margin-bottom: 32px;
  }

  .hypothesis { max-width: 100%; padding-left: 18px; }
  main { padding-bottom: 64px; }
}

@media (max-width: 640px) {
  .label + .body::first-letter {
    float: none;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    padding: 0;
    color: inherit;
  }

  .ads { column-count: 1; }
  .ad-text { text-align: left; }
}

@media (max-width: 420px) {
  .wrap { width: calc(100% - 40px); }
  .section-errata .wrap { width: calc(100% - 40px); }
  .masthead-name { font-size: var(--t-18); letter-spacing: 0.16em; }
  .credits { grid-template-columns: 1fr; }
  .datastrip { grid-template-columns: 1fr; }
  .datastrip-item { padding: 0; border-left: 0; }
  .masthead-meta { font-size: 11px; letter-spacing: 0.1em; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  html.js .reveal { opacity: 1; }
  html.js .headline .line > span { transform: none; }

  .scale-beam { transform: rotate(0deg); }

  [data-redact] .bar { display: none; }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  @page { margin: 18mm 14mm; }

  html, body {
    background: #fff;
    color: #000;
    font-size: 10.5pt;
    line-height: 1.42;
  }

  .backdrop, .rail, .dock, .skip { display: none; }

  section[data-era="moderna"],
  .section-footer,
  .section-transition {
    --fg: #000;
    --accent: #000;
    --muted: #333;
    --rule: #000;
    --rule-soft: #999;
    color: #000;
  }

  .wrap,
  .section-errata .wrap {
    width: 100%;
    max-width: none;
    margin: 0;
  }

  .section { padding: 0 0 10mm; }

  .argument-grid .col-8,
  .errata {
    columns: 2;
    column-gap: 8mm;
  }

  .body, .errata-body { max-width: none; }

  .grid { display: block; }
  .datastrip { display: flex; gap: 6mm; }
  .ads { column-count: 4; column-gap: 6mm; }
  .refs { columns: 2; }

  h1, h2, h3, .hypothesis, .ad, .ref, .datastrip-item, .credit {
    break-inside: avoid;
  }

  h1, h2 { break-after: avoid; }

  #errata, #privacidade, #classificados, #estado, #conclusao, #fontes {
    break-before: page;
  }

  .section-hero { min-height: 0; display: block; }
  .headline { font-size: 34pt; }
  .hypothesis-text { font-size: 20pt; }
  .conclusion { font-size: 22pt; }

  html.js .reveal,
  html.js .headline { opacity: 1 !important; }
  html.js .headline .line > span { transform: none !important; }
  [data-redact] .bar { display: none !important; }
  .scale-beam { transform: rotate(0deg) !important; }

  .plate { max-width: 45mm; }

  a[href^="http"]::after {
    content: " <" attr(href) ">";
    font-family: var(--mono);
    font-size: 8pt;
    word-break: break-all;
  }

  a[href^="#"]::after { content: ""; }
}