:root {
  --bg: #0a1020;
  --bg-alt: #111a30;
  --panel: rgba(16, 26, 48, 0.78);
  --panel-strong: #13213f;
  --text: #e8efff;
  --muted: #a8b7d8;
  --line: rgba(168, 183, 216, 0.16);
  --accent: #7cf1d5;
  --accent-strong: #c8ff69;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  --radius: 24px;
  --radius-sm: 18px;
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(124, 241, 213, 0.16), transparent 28%),
    radial-gradient(circle at 85% 10%, rgba(200, 255, 105, 0.14), transparent 22%),
    linear-gradient(180deg, #070c17 0%, #0c1427 38%, #09111f 100%);
}

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

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

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(7, 12, 23, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
}

.brand,
.nav-links a,
.button,
.copy-button {
  transition: transform 0.2s ease, opacity 0.2s ease, border-color 0.2s ease;
}

.brand {
  font-family: "DM Serif Display", serif;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a:hover,
.brand:hover,
.button:hover,
.copy-button:hover {
  transform: translateY(-1px);
}

.hero {
  padding: 72px 0 40px;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 800;
  font-size: 0.8rem;
}

h1,
h2,
h3 {
  margin: 0;
}

h1,
h2 {
  font-family: "DM Serif Display", serif;
  line-height: 1.04;
}

h1 {
  font-size: clamp(2.6rem, 5vw, 4.8rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 3vw, 3rem);
  max-width: 15ch;
}

h3 {
  font-size: 1.15rem;
}

.hero-summary,
.rich-text p,
.task-card p,
.method-card p,
.result-card p,
.authors p,
.site-footer p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-summary {
  max-width: 64ch;
  margin: 24px 0 0;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
}

.button,
.copy-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.02);
}

.button.primary,
.copy-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #07101d;
  border-color: transparent;
}

.authors p {
  margin: 0;
}

.affiliations {
  font-size: 0.95rem;
}

.hero-art img,
.benchmark-art img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stats-strip {
  padding: 8px 0 24px;
}

.stats-grid,
.task-grid,
.method-grid,
.results-grid {
  display: grid;
  gap: 18px;
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-card,
.task-card,
.method-card,
.result-card,
.citation-card,
.benchmark-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 22px;
  text-align: center;
}

.stat-card strong {
  display: block;
  font-size: 2.2rem;
  color: var(--accent-strong);
}

.stat-card span {
  color: var(--muted);
}

.section {
  padding: 64px 0;
}

.section.alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.03));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 28px;
  align-items: start;
}

.rich-text p {
  margin: 0 0 16px;
}

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

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

.task-card h3,
.method-card h3,
.result-label {
  margin-bottom: 10px;
}

.benchmark-panel {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
  padding: 24px;
}

.benchmark-copy h3 {
  margin-bottom: 12px;
}

.method-grid {
  margin-top: 28px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.method-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  margin-bottom: 18px;
  color: #07101d;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.results-grid {
  margin-top: 28px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.result-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.result-metrics div {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.result-metrics strong {
  display: block;
  font-size: 2rem;
  color: var(--accent-strong);
}

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

.narrative {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.citation-card {
  position: relative;
  padding: 24px;
  overflow: hidden;
}

.copy-button {
  position: absolute;
  top: 18px;
  right: 18px;
  cursor: pointer;
  font: inherit;
}

pre {
  margin: 0;
  overflow-x: auto;
  white-space: pre-wrap;
  color: #dff8ff;
  line-height: 1.7;
  font-size: 0.95rem;
}

.site-footer {
  padding: 24px 0 48px;
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

@media (max-width: 980px) {
  .hero-layout,
  .section-grid,
  .benchmark-panel,
  .method-grid,
  .results-grid {
    grid-template-columns: 1fr;
  }

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

  h1,
  h2 {
    max-width: none;
  }
}

@media (max-width: 720px) {
  .nav,
  .footer-layout {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .stats-grid,
  .task-grid,
  .result-metrics {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 52px;
  }

  .section {
    padding: 52px 0;
  }

  .copy-button {
    position: static;
    margin-bottom: 16px;
  }
}