:root {
  --paper: #f8f7f5;
  --surface: #ffffff;
  --surface-muted: #f1efec;
  --ink: #1c1917;
  --ink-soft: #49423e;
  --muted: #716965;
  --rule: #e4dfdb;
  --crimson: #a51c30;
  --crimson-dark: #7f1425;
  --crimson-tint: #fbf0f2;
  --success: #2d6a4f;
  --success-tint: #edf7f1;
  --font-display: "Crimson Text", Georgia, Cambria, "Times New Roman", serif;
  --font-body: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, monospace;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --shadow: 0 1px 2px rgba(28, 25, 23, 0.04), 0 12px 32px -20px rgba(28, 25, 23, 0.22);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p,
dl,
dd,
figure {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  text-wrap: balance;
}

a {
  color: var(--crimson-dark);
  text-decoration-color: color-mix(in srgb, var(--crimson) 34%, transparent);
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-color: currentColor;
}

a:focus-visible,
summary:focus-visible {
  border-radius: 0.2rem;
  outline: 3px solid color-mix(in srgb, var(--crimson) 68%, white);
  outline-offset: 3px;
}

.wrap {
  width: min(100%, 76rem);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  border-radius: 0.4rem;
  background: var(--surface);
  color: var(--ink);
  padding: 0.65rem 1rem;
  box-shadow: var(--shadow);
}

.skip-link:focus {
  top: 1rem;
}

.eyebrow,
.chip,
.button,
.nav,
.catalog-count,
.preview-number,
.preview-status,
.dataset-type,
.dataset-card__number,
.footer__links {
  font-family: var(--font-mono);
}

.eyebrow {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow > span {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.55rem;
  border-radius: 2px;
  background: var(--crimson);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid color-mix(in srgb, var(--rule) 84%, transparent);
  background: color-mix(in srgb, var(--paper) 91%, transparent);
  backdrop-filter: blur(12px);
}

.topbar__inner {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  gap: 1.2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-decoration: none;
  white-space: nowrap;
}

.brand > span:last-child > span {
  color: var(--crimson);
}

.brand__mark {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 2px;
  background: var(--crimson);
  box-shadow: 0.32rem 0.32rem 0 color-mix(in srgb, var(--crimson) 22%, transparent);
}

.affiliation {
  margin-right: auto;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 0.95rem;
  text-decoration: none;
}

.affiliation:hover {
  color: var(--crimson);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.nav a {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

.nav a:hover {
  color: var(--crimson-dark);
}

.hero {
  padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(2.5rem, 6vw, 4rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(21rem, 0.97fr);
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.hero h1 {
  margin-top: 1.15rem;
  font-size: clamp(3rem, 2rem + 4.5vw, 5.25rem);
  letter-spacing: -0.035em;
}

.hero h1 em {
  color: var(--crimson);
  font-style: normal;
}

.hero__lede {
  max-width: 40rem;
  margin-top: 1.5rem;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 0.98rem + 0.35vw, 1.22rem);
  line-height: 1.65;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 2.8rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--rule);
  border-radius: 0.65rem;
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.2;
  padding: 0.75rem 1rem;
  text-decoration: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.button:hover {
  border-color: color-mix(in srgb, var(--crimson) 42%, var(--rule));
  box-shadow: 0 8px 24px -15px rgba(28, 25, 23, 0.3);
  color: var(--crimson-dark);
  transform: translateY(-1px);
}

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

.button--primary:hover {
  border-color: var(--crimson-dark);
  background: var(--crimson-dark);
  color: white;
}

.hub-card {
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 2px 3px rgba(28, 25, 23, 0.04), 0 24px 60px -36px rgba(165, 28, 48, 0.36);
  padding: clamp(1.25rem, 3vw, 1.65rem);
}

.hub-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.hub-card h2 {
  margin-top: 0.35rem;
  font-size: 1.65rem;
}

.catalog-count {
  color: color-mix(in srgb, var(--crimson) 58%, var(--rule));
  font-size: 1.25rem;
  font-weight: 700;
}

.catalog-preview {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 1.3rem 0 0;
  border: 1px solid var(--rule);
  border-radius: 0.7rem;
  padding: 0;
  list-style: none;
}

.catalog-preview li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  border-bottom: 1px solid var(--rule);
  padding: 0.85rem;
}

.catalog-preview li:last-child {
  border-bottom: 0;
}

.preview-number {
  color: var(--crimson);
  font-size: 0.66rem;
  font-weight: 700;
}

.catalog-preview strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.2;
}

.catalog-preview small {
  display: block;
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.69rem;
  line-height: 1.35;
}

.preview-status {
  border: 1px dashed var(--rule);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.43rem;
  text-transform: uppercase;
}

.preview-status--released {
  border-color: color-mix(in srgb, var(--success) 28%, var(--rule));
  border-style: solid;
  background: var(--success-tint);
  color: var(--success);
}

.section {
  margin-top: 0;
  border-top: 1px solid var(--rule);
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.7fr);
  align-items: end;
  gap: 3rem;
}

.section-heading h2,
.about-grid h2 {
  margin-top: 0.55rem;
  font-size: clamp(2rem, 1.5rem + 1.6vw, 3rem);
  letter-spacing: -0.02em;
}

.section-heading > p {
  color: var(--muted);
  font-size: 0.88rem;
}

.dataset-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.dataset-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 0.85rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.dataset-card--released {
  border-top: 3px solid var(--crimson);
}

.dataset-card__topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.35rem 0;
}

.dataset-card__number {
  color: color-mix(in srgb, var(--crimson) 58%, var(--rule));
  font-size: 0.72rem;
  font-weight: 700;
}

.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--rule);
  border-radius: 0.3rem;
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.2;
  padding: 0.3rem 0.5rem;
  text-transform: uppercase;
  white-space: nowrap;
}

.chip--available {
  border-color: color-mix(in srgb, var(--success) 30%, var(--rule));
  background: var(--success-tint);
  color: var(--success);
}

.chip--coming {
  border-style: dashed;
  background: var(--surface-muted);
}

.dataset-card__body {
  flex: 1;
  padding: 1rem 1.35rem 1.35rem;
}

.dataset-type {
  color: var(--crimson-dark);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.dataset-card h3 {
  margin-top: 0.6rem;
  font-size: clamp(1.6rem, 1.35rem + 0.75vw, 2rem);
  letter-spacing: -0.015em;
}

.dataset-card__body > p:not(.dataset-type) {
  margin-top: 0.75rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.dataset-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 1.25rem 0 0;
  border: 1px solid var(--rule);
  border-radius: 0.55rem;
  background: var(--rule);
  padding: 0;
  list-style: none;
}

.dataset-stats li {
  min-width: 0;
  background: var(--paper);
  padding: 0.65rem 0.55rem;
}

.dataset-stats strong,
.dataset-stats span {
  display: block;
}

.dataset-stats strong {
  color: var(--crimson);
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.1;
}

.dataset-stats span {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.6rem;
}

.placeholder-lines {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.placeholder-lines span {
  height: 0.5rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--surface-muted), color-mix(in srgb, var(--crimson) 8%, var(--surface-muted)));
}

.placeholder-lines span:nth-child(2) {
  width: 78%;
}

.placeholder-lines span:nth-child(3) {
  width: 56%;
}

.telemetry-preview {
  display: flex;
  height: 3.5rem;
  align-items: flex-end;
  gap: 0.35rem;
  margin-top: 1.25rem;
  border-bottom: 1px solid var(--rule);
  padding-inline: 0.35rem;
}

.telemetry-preview span {
  width: 100%;
  height: var(--bar);
  border-radius: 3px 3px 0 0;
  background: color-mix(in srgb, var(--crimson) 68%, var(--rule));
}

.dataset-details {
  border-top: 1px solid var(--rule);
  background: color-mix(in srgb, var(--surface-muted) 52%, var(--surface));
}

.dataset-details summary {
  position: relative;
  color: var(--crimson-dark);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  list-style: none;
  padding: 0.85rem 2.4rem 0.85rem 1.35rem;
  text-transform: uppercase;
}

.dataset-details summary::-webkit-details-marker {
  display: none;
}

.dataset-details summary::after {
  content: "+";
  position: absolute;
  right: 1.35rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
}

.dataset-details[open] summary::after {
  content: "−";
}

.details-content {
  border-top: 1px solid var(--rule);
  padding: 1rem 1.35rem 1.2rem;
}

.details-content p {
  color: var(--muted);
  font-size: 0.78rem;
}

.card-links,
.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin-top: 1rem;
}

.card-links a,
.about-links a {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-decoration: none;
}

.card-links a::before,
.about-links a::before {
  content: "→";
  margin-right: 0.32rem;
  color: var(--muted);
}

.section--about {
  margin-top: 0;
  background: var(--crimson-tint);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(20rem, 1.1fr);
  gap: clamp(2rem, 6vw, 5rem);
}

.about-copy {
  color: var(--ink-soft);
}

.about-copy p + p {
  margin-top: 1rem;
}

.about-links {
  margin-top: 1.35rem;
}

.footer {
  border-top: 1px solid var(--rule);
  background: var(--surface);
}

.footer__inner {
  display: flex;
  min-height: 8rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.footer__inner > div > p {
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.65rem 1.2rem;
}

.footer__links a {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

.footer__links a:hover {
  color: var(--crimson-dark);
}

@media (max-width: 68rem) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__copy {
    max-width: 48rem;
  }

  .hub-card {
    max-width: 44rem;
  }

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

  .dataset-card {
    max-width: 46rem;
  }
}

@media (max-width: 58rem) {
  .nav {
    display: none;
  }

  .section-heading,
  .about-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.25rem;
  }

  .section-heading > p {
    max-width: 40rem;
  }
}

@media (max-width: 46rem) {
  .topbar__inner {
    min-height: 4rem;
  }

  .affiliation {
    font-size: 0.8rem;
    text-align: right;
  }

  .footer__inner {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 2rem;
  }

  .footer__links {
    justify-content: flex-start;
  }
}

@media (max-width: 31rem) {
  .affiliation {
    display: none;
  }

  .catalog-preview li {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .preview-status {
    grid-column: 2;
    justify-self: start;
  }

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

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

  .button {
    transition: none;
  }
}