:root {
  --ink: #17130f;
  --muted: #6f665d;
  --paper: #f5f0e7;
  --paper-deep: #ebe1d2;
  --line: rgba(23, 19, 15, 0.16);
  --oxide: #a6422d;
  --oxide-dark: #702a20;
  --moss: #52684d;
  --steel: #284d5c;
  --white: #fffaf2;
  --shadow: 0 24px 60px rgba(36, 24, 12, 0.18);
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "IBM Plex Sans", Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(23, 19, 15, 0.04) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(180deg, rgba(23, 19, 15, 0.035) 1px, transparent 1px) 0 0 / 72px 72px,
    var(--paper);
  font-family: var(--sans);
  line-height: 1.55;
}

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

a {
  color: inherit;
}

.site-header {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(255, 250, 242, 0.22);
  background: rgba(23, 19, 15, 0.74);
  color: var(--white);
  backdrop-filter: blur(18px);
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  white-space: nowrap;
}

.mark-glyph {
  display: grid;
  place-items: center;
  width: 42px;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 250, 242, 0.5);
  font-family: var(--serif);
  font-size: 0.9rem;
  font-weight: 750;
}

.mark-text,
.nav-links,
.nav-action,
.button,
.section-kicker,
.stat-label,
.item-index,
.figure-tab small,
.footer {
  letter-spacing: 0;
}

.mark-text {
  font-size: 0.92rem;
  font-weight: 600;
}

.nav-links {
  justify-self: end;
  display: flex;
  gap: clamp(12px, 2.4vw, 32px);
  color: rgba(255, 250, 242, 0.78);
  font-size: 0.92rem;
}

.nav-links a,
.nav-action {
  text-decoration: none;
}

.nav-links a:hover,
.nav-action:hover {
  color: var(--white);
}

.nav-action {
  padding: 8px 13px;
  border: 1px solid rgba(255, 250, 242, 0.44);
  color: var(--white);
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  align-items: end;
  gap: 32px;
  padding: 128px clamp(20px, 6vw, 84px) 54px;
  overflow: hidden;
  color: var(--white);
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.08);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(13, 11, 8, 0.9) 0%, rgba(13, 11, 8, 0.7) 42%, rgba(13, 11, 8, 0.28) 100%),
    linear-gradient(180deg, rgba(13, 11, 8, 0.12) 0%, rgba(13, 11, 8, 0.38) 100%);
}

.hero-content,
.hero-stats {
  position: relative;
  z-index: 1;
}

.venue,
.section-kicker {
  margin: 0 0 16px;
  color: var(--oxide);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero .venue {
  color: #f0a35f;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--serif);
  font-weight: 750;
  line-height: 0.98;
}

h1 {
  max-width: 970px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 8.5vw, 8.4rem);
  overflow-wrap: break-word;
}

h2 {
  font-size: clamp(2.2rem, 5vw, 5.7rem);
}

h3 {
  font-size: clamp(1.05rem, 1.6vw, 1.28rem);
  line-height: 1.16;
}

.hero-copy {
  max-width: 760px;
  margin-bottom: 32px;
  color: rgba(255, 250, 242, 0.86);
  font-size: clamp(1.04rem, 2vw, 1.32rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--white);
  color: var(--ink);
}

.button.secondary {
  border-color: rgba(255, 250, 242, 0.5);
  color: var(--white);
}

.hero-stats {
  align-self: end;
  display: grid;
  gap: 0;
  border: 1px solid rgba(255, 250, 242, 0.28);
  background: rgba(23, 19, 15, 0.46);
  backdrop-filter: blur(14px);
}

.hero-stats div {
  padding: 22px 24px;
  border-bottom: 1px solid rgba(255, 250, 242, 0.18);
}

.hero-stats div:last-child {
  border-bottom: 0;
}

.stat-value {
  display: block;
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 750;
  line-height: 0.92;
}

.stat-label {
  display: block;
  margin-top: 8px;
  color: rgba(255, 250, 242, 0.72);
  font-size: 0.88rem;
  text-transform: uppercase;
}

.section {
  padding: clamp(68px, 10vw, 132px) clamp(20px, 6vw, 84px);
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.95fr) minmax(280px, 1fr);
  gap: clamp(32px, 6vw, 92px);
  align-items: start;
}

.prose {
  color: var(--muted);
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
}

.prose p:last-child {
  margin-bottom: 0;
}

.method-section {
  background: var(--ink);
  color: var(--white);
}

.method-section .section-kicker {
  color: #e79a63;
}

.findings-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 38px;
  background: rgba(255, 250, 242, 0.18);
}

.findings-grid article {
  min-height: 260px;
  padding: clamp(22px, 3vw, 34px);
  background: #211b15;
}

.findings-grid p {
  margin-bottom: 0;
  color: rgba(255, 250, 242, 0.68);
}

.item-index {
  display: block;
  margin-bottom: 62px;
  color: #e79a63;
  font-weight: 800;
}

.diagram-stack {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}

.diagram-card {
  margin: 0;
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid rgba(255, 250, 242, 0.22);
  background: rgba(255, 250, 242, 0.06);
}

.diagram-card img {
  width: 100%;
  background: #f5f0e7;
}

.diagram-card figcaption {
  color: rgba(255, 250, 242, 0.72);
}

.figure-band {
  display: grid;
  grid-template-columns: minmax(280px, 0.42fr) minmax(320px, 0.58fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: center;
  padding: clamp(64px, 8vw, 104px) clamp(20px, 6vw, 84px);
  background: var(--paper-deep);
}

.figure-copy p {
  color: var(--muted);
  font-size: 1.08rem;
}

.figure-band figure,
.figure-stage,
.citation-box {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.figure-band figure {
  padding: 18px;
}

.evidence-section {
  background: #f8f3ea;
}

.evidence-stack {
  display: grid;
  gap: 28px;
  margin-top: 34px;
}

.evidence-card {
  display: grid;
  grid-template-columns: minmax(220px, 0.26fr) minmax(0, 0.74fr);
  gap: clamp(20px, 3vw, 38px);
  align-items: start;
  margin: 0;
  padding: clamp(18px, 3vw, 34px);
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.evidence-copy h3 {
  margin-bottom: 12px;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.2vw, 2.2rem);
  font-weight: 750;
}

.evidence-copy p {
  margin-bottom: 0;
  color: var(--muted);
}

.evidence-card figure {
  margin: 0;
}

.evidence-card img {
  width: 100%;
  max-height: 430px;
  object-fit: contain;
  background: #fff;
}

.evidence-card img + img {
  margin-top: 24px;
}

figcaption {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.98rem;
}

.findings-section {
  background: var(--ink);
  color: var(--white);
}

.findings-section .section-kicker {
  color: #e79a63;
}

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

.limitations-section {
  background: linear-gradient(90deg, rgba(82, 104, 77, 0.16), transparent 45%), var(--paper);
}

.citation-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.34fr) minmax(320px, 0.66fr);
  gap: 32px;
  align-items: start;
  background: var(--paper-deep);
}

.citation-box {
  position: relative;
  padding: 22px;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.paper-button {
  border-color: var(--line);
  background: var(--ink);
  color: var(--white);
}

pre {
  max-width: 100%;
  margin: 0;
  overflow-x: auto;
  color: #2c241c;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.92rem;
}

.copy-button {
  position: absolute;
  top: 14px;
  right: 14px;
  min-width: 76px;
  min-height: 36px;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--white);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 6vw, 84px);
  background: var(--ink);
  color: rgba(255, 250, 242, 0.7);
  font-size: 0.92rem;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--white);
  text-decoration: none;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .split,
  .figure-band,
  .evidence-card,
  .citation-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 112px;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-stats div {
    border-bottom: 0;
    border-right: 1px solid rgba(255, 250, 242, 0.18);
  }

  .hero-stats div:last-child {
    border-right: 0;
  }

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

@media (max-width: 640px) {
  .site-header {
    padding: 10px 14px;
  }

  .mark-text {
    display: none;
  }

  .hero {
    padding: 96px 18px 34px;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2.35rem, 11.6vw, 3.2rem);
    line-height: 1.04;
  }

  h2 {
    font-size: clamp(2rem, 11vw, 3.25rem);
  }

  .hero-stats,
  .findings-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 250, 242, 0.18);
  }

  .section,
  .figure-band {
    padding-left: 18px;
    padding-right: 18px;
  }

  .copy-button {
    position: static;
    margin-top: 18px;
  }

  .citation-box {
    min-width: 0;
  }

  pre {
    font-size: 0.76rem;
  }
}