:root {
  /* dark surfaces */
  --bg: #0a0a0a;
  --panel: #12121a;
  --card: #171a22;

  /* typography */
  --ink: #ffffff;
  --muted: #cbd5e1;

  /* stroke/border */
  --stroke: #ffffff33;

  /* accent colour – green */
  --accent: #22c55e;
  --accent-strong: #4ade80;

  /* you can leave --max-width and other variables unchanged */
  --success: var(--accent);
  --border: var(--stroke);
  --text: var(--ink);
  --max-width: 1100px;
}

* {
  box-sizing: border-box;
}

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--accent-strong);
  text-decoration: underline;
}

.dataset-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 18px 48px;
  display: grid;
  gap: 28px;
}

.eyebrow {
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 0.8rem;
  margin: 4px 0 0;
}

h1 {
  margin: 4px 0 10px;
  font-size: clamp(1.9rem, 3vw, 2.3rem);
}

.lede {
  margin: 0 0 10px;
  color: #cbd5e1;
  font-size: 1.05rem;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 8px 0 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.95rem;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li + li::before {
  content: "/";
  color: var(--muted);
  margin-right: 2px;
}

.breadcrumbs a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  color: var(--accent-strong);
  text-decoration: underline;
}

section.panel {
  background: var(--panel);
  border: 2px solid var(--stroke);
  border-radius: 14px;
  padding: 18px;
  box-shadow: none;
}

.panel-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 4px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.panel-label::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.12);
}

section.panel h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

section.panel p {
  margin-top: 0;
}

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 6px 0 0;
  list-style: none;
}

.badge {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--ink);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.9rem;
}

.cta-actions {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(34, 197, 94, 0.2);
  border: 2px solid var(--accent);
  border-radius: 12px;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.cta-button:hover,
.cta-button:focus {
  transform: translateY(-2px);
  background: rgba(34, 197, 94, 0.3);
  border-color: var(--accent-strong);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
  text-decoration: none;
}

.download-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  padding: 0;
  margin: 12px 0 0;
  list-style: none;
}

.download-card {
  display: block;
  background: var(--card);
  border: 2px solid var(--stroke);
  border-radius: 12px;
  padding: 12px 14px;
  height: 100%;
  color: inherit;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.download-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.download-card strong {
  display: block;
  margin-bottom: 4px;
}

.download-card .format {
  color: var(--muted);
  font-size: 0.9rem;
}

ul.listed {
  padding-left: 20px;
  margin: 10px 0;
}

.footer-note {
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .dataset-page {
    padding: 20px 14px 36px;
    gap: 20px;
  }
}