:root {
  --bg: #f4efe7;
  --bg-soft: #fbf8f2;
  --paper: rgba(255, 252, 247, 0.88);
  --ink: #182126;
  --muted: #5e696f;
  --line: rgba(24, 33, 38, 0.12);
  --accent: #c95f36;
  --accent-dark: #8f381b;
  --accent-soft: rgba(201, 95, 54, 0.12);
  --shadow: 0 24px 80px rgba(39, 27, 19, 0.10);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --content-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(201, 95, 54, 0.10), transparent 26%),
    radial-gradient(circle at top right, rgba(16, 122, 101, 0.10), transparent 24%),
    linear-gradient(180deg, #efe7db 0%, #f9f6f0 52%, #f4efe7 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
  padding: 20px 0 48px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 24px;
  padding: 12px 4px;
}

.brand {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.top-nav a {
  color: var(--muted);
  font-weight: 600;
}

.hero-card,
.section,
.site-footer {
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 44px;
  border-radius: var(--radius-xl);
}

.eyebrow,
.section-kicker,
.fact-label,
.resource-type {
  margin: 0 0 10px;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 800;
}

.hero-card h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.hero-copy {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.75;
}

.authors,
.affiliations,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
}

.authors {
  margin-top: 28px;
  font-weight: 700;
}

.authors a:hover,
.top-nav a:hover {
  color: var(--accent-dark);
}

.affiliations {
  margin-top: 12px;
  color: var(--muted);
}

.notes {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

.cta-row {
  margin-top: 28px;
}

.pill-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease;
}

.pill-button:hover,
.copy-button:hover,
#demoButton:hover {
  transform: translateY(-2px);
}

.pill-button--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.teaser-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(260px, 0.75fr);
  gap: 20px;
  margin-top: 20px;
}

.teaser-figure,
.fact-card,
.diagram-card,
.result-card,
.resource-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.teaser-figure {
  padding: 18px;
  min-height: 360px;
}

.placeholder-art {
  height: 100%;
  min-height: 320px;
  border-radius: 20px;
  padding: 28px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.10), transparent),
    linear-gradient(135deg, #15212a 0%, #31424f 48%, #c95f36 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 10px;
}

.art-badge,
.art-caption {
  color: rgba(255, 255, 255, 0.78);
}

.art-badge {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.art-title {
  font-family: "Instrument Serif", serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 0.95;
}

.art-caption {
  max-width: 540px;
  line-height: 1.7;
}

.quick-facts {
  display: grid;
  gap: 16px;
}

.fact-card {
  padding: 22px;
}

.fact-card strong {
  font-size: 1.1rem;
}

.section {
  margin-top: 20px;
  padding: 34px;
  border-radius: var(--radius-xl);
}

.section--alt {
  background: rgba(249, 244, 237, 0.95);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 3rem);
  letter-spacing: -0.04em;
}

.section-text,
.result-card p,
.resource-card p,
.diagram-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  gap: 24px;
}

.text-stack {
  display: grid;
  gap: 18px;
}

.feature-list {
  margin: 0;
  padding-left: 20px;
  color: var(--ink);
  line-height: 1.9;
}

.diagram-card {
  padding: 24px;
}

.mini-diagram {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.mini-diagram span {
  min-height: 100px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(201, 95, 54, 0.15), rgba(21, 33, 42, 0.06));
  font-weight: 800;
}

.diagram-note {
  margin-top: 14px;
}

.results-grid,
.resource-grid {
  display: grid;
  gap: 20px;
}

.results-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.result-card,
.resource-card {
  padding: 24px;
}

.result-card h3,
.resource-card strong {
  margin-top: 0;
}

.result-media,
.video-placeholder {
  margin-top: 18px;
  border-radius: 18px;
  border: 1px dashed rgba(24, 33, 38, 0.16);
  background: rgba(255, 255, 255, 0.55);
}

.result-media {
  min-height: 190px;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-weight: 700;
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.metrics-row div {
  padding: 18px 14px;
  border-radius: 18px;
  background: rgba(201, 95, 54, 0.08);
  text-align: center;
}

.metrics-row strong {
  display: block;
  font-size: 1.7rem;
}

.metrics-row span {
  color: var(--muted);
}

.result-card--wide {
  grid-column: 1 / -1;
}

.video-placeholder {
  padding: 24px;
}

#demoButton,
.copy-button {
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  padding: 12px 18px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

#demoText {
  margin: 14px 0 0;
  color: var(--muted);
}

.resource-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.resource-card {
  transition: transform 180ms ease, border-color 180ms ease;
}

.resource-card:hover {
  transform: translateY(-3px);
  border-color: rgba(201, 95, 54, 0.36);
}

.citation-box {
  display: grid;
  gap: 16px;
}

.citation-box pre {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  background: #171f24;
  color: #eef4f4;
}

.citation-box code,
.site-footer code {
  font-family: "JetBrains Mono", monospace;
}

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

.site-footer {
  margin-top: 20px;
  padding: 18px 24px;
  border-radius: 24px;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 900px) {
  .site-header,
  .section-heading,
  .split-layout,
  .teaser-grid,
  .results-grid,
  .resource-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .site-header {
    justify-content: start;
  }

  .hero-card,
  .section {
    padding: 24px;
  }

  .mini-diagram,
  .metrics-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(calc(100% - 20px), var(--content-width));
  }

  .hero-card h1 {
    line-height: 1.02;
  }

  .mini-diagram,
  .metrics-row {
    grid-template-columns: 1fr;
  }

  .teaser-figure {
    min-height: auto;
  }
}