:root {
  color-scheme: dark;
  --background: #0a1210;
  --panel: #12201b;
  --panel-strong: #172a23;
  --border: #315046;
  --text: #e8f4ef;
  --muted: #a8c2b8;
  --accent: #70e0ae;
  --accent-warm: #e0b15c;
  --code: #0c1713;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 20% 0%, #153128 0, var(--background) 38rem);
  color: var(--text);
  font: 16px/1.55 system-ui, sans-serif;
}

a {
  color: var(--accent);
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

pre {
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--code);
}

.site-header,
main,
footer {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding-block: 1rem;
  border-bottom: 1px solid var(--border);
}

.site-header nav {
  display: flex;
  gap: 1rem;
}

.brand {
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

main {
  padding-block: 3rem;
}

footer {
  padding-block: 1.5rem 3rem;
  color: var(--muted);
}

.hero {
  max-width: 52rem;
  margin-bottom: 2.5rem;
}

.hero h1,
.reference-article h1 {
  margin: 0.2rem 0 0.75rem;
  font: 700 clamp(2.2rem, 6vw, 4.5rem)/1.02 Georgia, serif;
}

.eyebrow {
  margin: 0;
  color: var(--accent-warm);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lede {
  color: var(--muted);
  font-size: 1.12rem;
}

.filters {
  display: grid;
  grid-template-columns: minmax(14rem, 2fr) repeat(4, minmax(9rem, 1fr));
  gap: 0.75rem;
}

.filters label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 650;
}

input,
select {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  background: var(--panel);
  color: var(--text);
}

.symbol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1rem;
}

.symbol-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: linear-gradient(145deg, var(--panel-strong), var(--panel));
}

.symbol-card h3 {
  margin: 0.3rem 0;
}

.symbol-card p:last-child {
  color: var(--muted);
}

.index-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.breadcrumbs {
  margin-bottom: 2rem;
  color: var(--muted);
}

.reference-article {
  max-width: 58rem;
}

.facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.4rem 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--panel);
}

.facts dt {
  color: var(--muted);
  font-weight: 700;
}

.facts dd {
  margin: 0;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 0.65rem;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

[hidden] {
  display: none !important;
}

@media (max-width: 760px) {
  .site-header,
  .site-header nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .filters,
  .index-groups {
    grid-template-columns: 1fr;
  }
}