:root {
  color-scheme: dark;
  --background: #0c181d;
  --surface: #14262c;
  --surface-deep: #102127;
  --text: #e8deca;
  --muted: #aeb8b4;
  --action: #d06a3b;
  --teal: #6c9698;
  --violet: #927da0;
  --paper: #e6dcc8;
  --paper-text: #16272c;
  --paper-muted: #526164;
  --line: rgb(232 222 202 / 18%);
  --paper-line: rgb(22 39 44 / 17%);
  --container: 1240px;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background-color: var(--background);
  background-image:
    radial-gradient(circle at 16% 12%, rgb(108 150 152 / 5%), transparent 28%),
    radial-gradient(circle at 88% 42%, rgb(208 106 59 / 3%), transparent 24%);
  color: var(--text);
  font-family: "Source Sans 3", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 4px;
}

.container {
  width: min(var(--container), calc(100% - 64px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  transform: translateY(-150%);
  border-radius: 999px;
  background: var(--paper);
  color: var(--paper-text);
  font-weight: 600;
}

.skip-link:focus {
  transform: translateY(0);
}

.study-note {
  display: grid;
  min-height: 30px;
  place-items: center;
  padding: 5px 20px;
  background: var(--action);
  color: var(--background);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgb(12 24 29 / 92%);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.navigation {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.signature {
  display: grid;
  text-decoration: none;
}

.signature strong {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 25px;
  font-weight: 600;
  letter-spacing: 0.065em;
  line-height: 0.95;
  text-transform: uppercase;
}

.signature span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  color: var(--muted);
  font-weight: 500;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a.is-current {
  border-color: var(--action);
  color: var(--text);
}

.eyebrow,
.article-meta,
.article-tags {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 28px;
  color: var(--action);
}

.edge-arc {
  position: absolute;
  border: 1px solid rgb(108 150 152 / 48%);
  border-radius: 50%;
  pointer-events: none;
}

.edge-arc::after {
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--action);
  content: "";
}

.edge-arc--hero {
  top: -260px;
  right: -280px;
  width: 820px;
  height: 820px;
}

.edge-arc--hero::after {
  bottom: 132px;
  left: 50px;
}

.articles-hero {
  position: relative;
  overflow: hidden;
  padding: 128px 0 150px;
}

.articles-hero-grid {
  display: grid;
  align-items: end;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 96px;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 500;
}

.articles-hero h1 {
  max-width: 820px;
  font-size: clamp(70px, 7.6vw, 112px);
  letter-spacing: -0.025em;
  line-height: 0.9;
}

.articles-intro {
  max-width: 430px;
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.55;
}

.articles-selection {
  padding: 104px 0 126px;
  background: var(--surface-deep);
}

.section-heading {
  display: grid;
  align-items: end;
  grid-template-columns: 0.45fr 1fr;
  padding-bottom: 42px;
  border-bottom: 1px solid var(--line);
}

.section-heading .eyebrow {
  margin: 0 0 8px;
}

.section-heading h2 {
  font-size: clamp(50px, 5.4vw, 78px);
  line-height: 0.95;
}

.articles-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  gap: 0;
  padding-top: 64px;
}

.article-card {
  display: grid;
  align-content: start;
}

.article-card--featured {
  grid-template-columns: minmax(280px, 0.95fr) minmax(300px, 1.05fr);
  padding-right: 56px;
  border-right: 1px solid var(--line);
}

.article-card--secondary {
  padding-left: 56px;
}

.article-cover {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  background: var(--surface);
}

.article-card--featured .article-cover {
  aspect-ratio: 0.86;
}

.article-card--secondary .article-cover {
  aspect-ratio: 1.7;
}

.article-cover::after {
  position: absolute;
  inset: 0;
  border: 1px solid rgb(232 222 202 / 18%);
  border-radius: inherit;
  content: "";
  pointer-events: none;
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 320ms ease;
}

.article-cover:hover img {
  transform: scale(1.018);
}

.article-card--featured .article-card-copy {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 20px 0 8px 42px;
}

.article-card--secondary .article-card-copy {
  padding-top: 30px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  color: var(--teal);
}

.article-meta span + span {
  color: var(--muted);
}

.article-card h3 {
  margin-top: 34px;
  font-size: clamp(40px, 4vw, 60px);
  line-height: 0.96;
}

.article-card--secondary h3 {
  font-size: clamp(38px, 3.2vw, 50px);
}

.article-card h3 a {
  text-decoration: none;
}

.article-card h3 a:hover {
  color: var(--action);
}

.article-card p {
  max-width: 540px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.read-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  align-self: flex-start;
  gap: 12px;
  margin-top: auto;
  padding-top: 36px;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.read-link span {
  color: var(--action);
  transition: transform 160ms ease;
}

.read-link:hover span {
  transform: translateX(4px);
}

.site-footer {
  padding: 58px 0;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
}

.footer-grid p {
  max-width: 440px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  text-align: right;
}

/* Página de leitura */

.article-hero {
  position: relative;
  overflow: hidden;
  padding: 82px 0 96px;
}

.edge-arc--article {
  top: -360px;
  right: -260px;
  width: 860px;
  height: 860px;
  border-color: rgb(208 106 59 / 52%);
}

.edge-arc--article::after {
  right: 112px;
  bottom: 108px;
}

.edge-arc--violet {
  border-color: rgb(146 125 160 / 58%);
}

.edge-arc--violet::after {
  background: var(--violet);
}

.article-hero-grid {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 82px;
}

.back-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 10px;
  margin-bottom: 48px;
  color: var(--muted);
  text-decoration: none;
}

.back-link:hover {
  color: var(--text);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.article-tags span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--teal);
}

.article-heading h1 {
  max-width: 850px;
  font-size: clamp(64px, 6.8vw, 102px);
  letter-spacing: -0.025em;
  line-height: 0.89;
}

.article-deck {
  max-width: 760px;
  margin: 34px 0 0;
  color: var(--muted);
  font-size: 21px;
  line-height: 1.5;
}

.article-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin-top: 40px;
  color: var(--muted);
  font-size: 14px;
}

.article-byline span:first-child {
  color: var(--text);
  font-weight: 600;
}

.article-hero-image {
  position: relative;
  z-index: 1;
  overflow: hidden;
  margin: 0;
  aspect-ratio: 1;
  border-radius: 26px;
  box-shadow: 0 30px 70px rgb(1 8 11 / 30%);
}

.article-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reading-field {
  position: relative;
  padding: 110px 0 126px;
  background: var(--paper);
  color: var(--paper-text);
}

.reading-field::before {
  position: absolute;
  top: -56px;
  right: 0;
  left: 0;
  height: 58px;
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  background: var(--paper);
  content: "";
}

.reading-layout {
  display: grid;
  align-items: start;
  grid-template-columns: 240px minmax(0, 760px);
  justify-content: center;
  gap: 72px;
}

.reading-rail {
  position: sticky;
  top: 126px;
  padding-top: 12px;
}

.reading-index {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border: 1px solid var(--action);
  border-radius: 50%;
  color: var(--action);
  font-family: "Barlow Condensed", sans-serif;
  font-size: 24px;
}

.reading-index--violet {
  border-color: var(--violet);
  color: var(--violet);
}

.reading-rail p {
  margin: 24px 0 0;
  color: var(--paper-muted);
  font-size: 14px;
  line-height: 1.55;
}

.article-body {
  font-size: 19px;
  line-height: 1.72;
}

.article-body p {
  margin: 0 0 30px;
}

.article-body .lead {
  margin-bottom: 42px;
  font-size: 24px;
  line-height: 1.55;
}

.article-body h2 {
  margin: 82px 0 28px;
  font-size: clamp(40px, 4vw, 54px);
  line-height: 1;
}

.article-body h3 {
  margin: 54px 0 22px;
  font-size: clamp(26px, 2.6vw, 34px);
  line-height: 1.1;
}


.article-body mark {
  padding: 0 0.12em;
  background: linear-gradient(
    to top,
    rgb(208 106 59 / 26%) 0 44%,
    transparent 44%
  );
  color: inherit;
}

.article-body blockquote {
  margin: 62px -80px;
  padding: 24px 0 24px 42px;
  border-left: 3px solid var(--action);
  color: var(--paper-text);
  font-family: "Barlow Condensed", sans-serif;
  font-size: clamp(36px, 3.6vw, 50px);
  line-height: 1.12;
}

.formula {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin: 64px 0 40px;
  padding: 34px;
  border-radius: 20px;
  background: var(--paper-text);
  color: var(--text);
  font-family: "Barlow Condensed", sans-serif;
  font-size: clamp(24px, 2.6vw, 34px);
}

.formula i {
  color: var(--teal);
  font-style: normal;
}

.formula strong {
  color: #e78253;
  font-weight: 600;
}

.related-article {
  padding: 96px 0 108px;
  background: var(--surface-deep);
}

.related-grid {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 56px;
}

.related-grid .eyebrow {
  margin-bottom: 22px;
}

.related-grid h2 {
  max-width: 760px;
  font-size: clamp(46px, 5vw, 72px);
  line-height: 0.95;
}

.button-secondary {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  gap: 12px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.button-secondary:hover {
  border-color: var(--action);
  color: var(--action);
}

@media (max-width: 980px) {
  .articles-hero-grid,
  .article-hero-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .articles-intro {
    max-width: 620px;
  }

  .articles-grid {
    grid-template-columns: 1fr;
    gap: 72px;
  }

  .article-card--featured {
    padding: 0 0 72px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .article-card--secondary {
    display: grid;
    grid-template-columns: minmax(260px, 0.8fr) minmax(300px, 1.2fr);
    padding-left: 0;
    gap: 42px;
  }

  .article-card--secondary .article-card-copy {
    padding-top: 12px;
  }

  .article-hero-image {
    width: min(620px, 100%);
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 36px, var(--container));
  }

  .study-note {
    min-height: 26px;
    font-size: 9px;
  }

  .navigation {
    min-height: 68px;
  }

  .signature strong {
    font-size: 22px;
  }

  .signature span {
    display: none;
  }

  .nav-links {
    gap: 18px;
  }

  .articles-hero {
    padding: 82px 0 94px;
  }

  .articles-hero h1 {
    font-size: clamp(54px, 16vw, 72px);
  }

  .articles-intro {
    font-size: 18px;
  }

  .edge-arc--hero {
    top: -140px;
    right: -300px;
    width: 620px;
    height: 620px;
  }

  .articles-selection {
    padding: 72px 0 82px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section-heading h2 {
    font-size: 50px;
  }

  .articles-grid {
    padding-top: 44px;
  }

  .article-card--featured,
  .article-card--secondary {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .article-card--featured .article-cover,
  .article-card--secondary .article-cover {
    aspect-ratio: 1.35;
  }

  .article-card--featured .article-card-copy,
  .article-card--secondary .article-card-copy {
    padding: 28px 0 0;
  }

  .article-card h3,
  .article-card--secondary h3 {
    font-size: 42px;
  }

  .read-link {
    margin-top: 8px;
    padding-top: 28px;
  }

  .footer-grid {
    display: grid;
    align-items: start;
  }

  .footer-grid p {
    text-align: left;
  }

  .article-hero {
    padding: 56px 0 86px;
  }

  .article-hero-grid {
    gap: 48px;
  }

  .back-link {
    margin-bottom: 34px;
  }

  .article-heading h1 {
    font-size: clamp(54px, 15vw, 70px);
  }

  .article-deck {
    margin-top: 26px;
    font-size: 18px;
  }

  .article-byline {
    display: grid;
    gap: 5px;
    margin-top: 30px;
  }

  .article-hero-image {
    border-radius: 20px;
  }

  .reading-field {
    padding: 74px 0 84px;
  }

  .reading-field::before {
    top: -28px;
    height: 30px;
  }

  .reading-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .reading-rail {
    position: static;
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 18px;
    padding: 0 0 30px;
    border-bottom: 1px solid var(--paper-line);
  }

  .reading-rail p {
    margin: 0;
  }

  .article-body {
    font-size: 18px;
    line-height: 1.68;
  }

  .article-body .lead {
    font-size: 21px;
  }

  .article-body h2 {
    margin-top: 64px;
    font-size: 42px;
  }

  .article-body blockquote {
    margin: 52px 0;
    padding-left: 24px;
    font-size: 36px;
  }

  .formula {
    gap: 9px 12px;
    margin-top: 52px;
    padding: 24px;
    font-size: 25px;
  }

  .related-article {
    padding: 72px 0 80px;
  }

  .related-grid {
    display: grid;
    align-items: start;
  }

  .related-grid h2 {
    font-size: 48px;
  }

  .button-secondary {
    justify-self: start;
  }
}

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

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

/* --- Artigos migrados: hero sem imagem, referências e lista completa --- */
.article-hero-grid--text {
  grid-template-columns: minmax(0, 1fr);
  max-width: 900px;
}

.article-body blockquote cite {
  display: block;
  margin-top: 18px;
  font-family: "Source Sans 3", sans-serif;
  font-size: 15px;
  font-style: normal;
  letter-spacing: 0.04em;
  opacity: 0.7;
}

.article-references {
  margin-top: 72px;
  padding-top: 32px;
  border-top: 1px solid rgba(20, 20, 20, 0.14);
}

.article-references h2 {
  margin-bottom: 20px;
  font-family: "Barlow Condensed", sans-serif;
  font-size: 26px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.article-references ul {
  margin: 0;
  padding-left: 20px;
  list-style: square;
}

.article-references li {
  margin-bottom: 12px;
  font-size: 16px;
  line-height: 1.6;
  opacity: 0.86;
}

.articles-library {
  padding: 40px 0 20px;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 32px;
}

.library-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px;
  border: 1px solid rgba(20, 20, 20, 0.14);
  border-radius: 18px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.library-card:hover {
  transform: translateY(-3px);
  border-color: var(--action);
}

.library-card h3 {
  margin: 0;
  font-family: "Barlow Condensed", sans-serif;
  font-size: 24px;
  line-height: 1.14;
}

.library-card h3 a {
  color: inherit;
  text-decoration: none;
}

.library-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  opacity: 0.82;
}