:root {
  --bg: #f2eadf;
  --paper: rgba(255, 251, 245, 0.84);
  --paper-strong: rgba(255, 250, 243, 0.94);
  --ink: #152432;
  --muted: #526171;
  --accent: #b24a2f;
  --accent-deep: #7b2f1a;
  --teal: #0f6c74;
  --gold: #ca9a3d;
  --line: rgba(21, 36, 50, 0.12);
  --shadow: 0 24px 70px rgba(26, 39, 51, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Serif 4", Georgia, serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(202, 154, 61, 0.22), transparent 24rem),
    radial-gradient(circle at 90% 10%, rgba(15, 108, 116, 0.16), transparent 22rem),
    linear-gradient(180deg, #f6efe4 0%, #efe6d9 100%);
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(21, 36, 50, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 36, 50, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 90%);
}

a {
  color: inherit;
}

.inline-link {
  color: var(--accent-deep);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.16em;
}

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

code,
pre {
  font-family: "Space Grotesk", "Courier New", monospace;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto 48px;
}

.hero,
.section,
.footer {
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: var(--shadow);
}

.hero {
  padding: 24px 28px 34px;
  border-radius: 36px;
}

.hero::after,
.section::after {
  content: "";
  position: absolute;
  inset: auto auto -80px -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(178, 74, 47, 0.12), transparent 70%);
  pointer-events: none;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 34px;
}

.brand,
.nav-links a,
.button,
.signal-label,
.status-label,
.metric-name,
.eyebrow,
.method-step span,
.diagnostic-card span {
  font-family: "Space Grotesk", sans-serif;
}

.brand {
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.94rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
  gap: 28px;
  align-items: start;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero h1,
.section-heading h2,
.takeaway h3,
.method-step h3,
.protocol-card h3,
.benchmarks-panel h3,
.repro-card h3,
.ablation-card h3 {
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.02;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  max-width: 13ch;
}

.authors,
.affiliations,
.hero-summary,
.status-card p,
.figure-caption,
.metric-card p,
.diagnostic-card p,
.protocol-card p,
.abstract-card p,
.takeaway p,
.repro-card li,
.citation-copy p,
.footer p {
  color: var(--muted);
}

.authors {
  margin: 18px 0 8px;
  font-size: 1.05rem;
}

.affiliations {
  margin: 0 0 18px;
}

.hero-summary {
  max-width: 62ch;
  font-size: 1.08rem;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.65);
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
  cursor: pointer;
  font-size: 0.95rem;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(21, 36, 50, 0.24);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #d98a35 100%);
  color: #fffaf2;
  border-color: transparent;
}

.button:disabled {
  cursor: default;
  opacity: 0.78;
  transform: none;
}

.status-strip,
.signal-grid,
.takeaways,
.method-grid,
.metrics-grid,
.diagnostic-grid,
.repro-grid {
  display: grid;
  gap: 16px;
}

.status-strip {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 28px;
}

.status-card,
.signal-card,
.abstract-card,
.takeaway,
.method-step,
.protocol-card,
.metric-card,
.benchmarks-panel,
.diagnostic-card,
.ablation-card,
.repro-card,
.citation-layout,
.logo-card {
  background: var(--paper-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.status-card,
.signal-card,
.takeaway,
.method-step,
.metric-card,
.diagnostic-card,
.repro-card {
  padding: 18px;
}

.status-label,
.signal-label,
.metric-name,
.diagnostic-card span,
.method-step span {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--accent-deep);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.76rem;
  font-weight: 700;
}

.hero-visual {
  display: grid;
  gap: 18px;
}

.logo-card {
  padding: 18px;
  min-height: 250px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at top, rgba(15, 108, 116, 0.16), transparent 38%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 247, 238, 0.88));
  animation: floatGlow 6s ease-in-out infinite;
}

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

.signal-card strong,
.metric-card strong,
.diagnostic-card strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
}

.section {
  margin-top: 24px;
  padding: 26px 28px 30px;
  border-radius: 30px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: 18px;
}

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

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 18px;
}

.intro-grid .section-heading,
.abstract-card {
  grid-column: 1 / -1;
}

.abstract-card,
.protocol-card,
.ablation-card,
.benchmarks-panel,
.citation-layout {
  padding: 22px;
}

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

.takeaway h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.figure-panel {
  margin-bottom: 18px;
}

.figure-panel img,
.result-figure img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: #fff;
}

.figure-caption,
.result-figure figcaption {
  margin: 12px 0 0;
  font-size: 0.95rem;
}

.method-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
}

.method-step {
  min-height: 220px;
}

.protocol-card {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  border-left: 6px solid var(--teal);
}

.protocol-card h3,
.benchmarks-panel h3,
.ablation-card h3 {
  margin: 0;
  font-size: 1.35rem;
}

.metrics-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 18px;
}

.metric-card.accent {
  background: linear-gradient(160deg, rgba(178, 74, 47, 0.14), rgba(255, 251, 245, 0.98));
}

.figure-duo {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 18px;
}

.result-figure {
  margin: 0;
}

.benchmarks-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 18px;
}

.benchmark-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

.benchmark-tags span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(15, 108, 116, 0.08);
  border: 1px solid rgba(15, 108, 116, 0.15);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.88rem;
}

.diagnostic-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
}

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

.repro-card pre {
  margin: 0;
  overflow-x: auto;
  font-size: 0.85rem;
  background: #102330;
  color: #f5efe5;
  border-radius: var(--radius-md);
  padding: 14px;
}

.repro-card ul {
  margin: 0;
  padding-left: 18px;
}

.citation-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

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

.copy-status {
  min-height: 1.5rem;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.citation-block {
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  border-radius: var(--radius-md);
  background: #102330;
  color: #f5efe5;
}

.footer {
  margin-top: 24px;
  padding: 18px 24px;
  border-radius: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

@keyframes floatGlow {
  0%,
  100% {
    transform: translateY(0);
    box-shadow: var(--shadow);
  }
  50% {
    transform: translateY(-6px);
    box-shadow: 0 28px 80px rgba(26, 39, 51, 0.16);
  }
}

@media (max-width: 980px) {
  .hero-grid,
  .intro-grid,
  .method-grid,
  .metrics-grid,
  .figure-duo,
  .benchmarks-panel,
  .diagnostic-grid,
  .repro-grid,
  .citation-layout,
  .protocol-card {
    grid-template-columns: 1fr;
  }

  .status-strip,
  .takeaways,
  .signal-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 100%);
    margin: 10px auto 28px;
  }

  .hero,
  .section,
  .footer {
    padding-left: 18px;
    padding-right: 18px;
  }

  .topbar,
  .footer {
    flex-direction: column;
    align-items: start;
  }

  .status-strip,
  .takeaways,
  .signal-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: none;
  }
}