:root {
  --brand: #336799;
  --text-on-brand: #ffffff;
  --border-on-brand: rgba(255, 255, 255, 0.28);
  --hover-on-brand: #2f5e8d;   /* slightly darker for hover/focus */
  --radius: 0.6rem;
  --speed: 200ms;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.5;
  background: var(--brand);
  color: var(--text-on-brand);
}

main { max-width: 1000px; margin: 2rem auto; padding: 0 1rem; }
h1 { font-size: 1.875rem; margin-bottom: 1rem; color: var(--text-on-brand); }

/* Links readable on brand background */
a { color: var(--text-on-brand); text-decoration: underline; }
a:hover, a:focus-visible { opacity: 0.9; }

/* Accordion */
.accordion {
  border-top: 1px solid var(--border-on-brand);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--brand);
}

.accordion-item {
  border-bottom: 1px solid var(--border-on-brand);
  background: var(--brand);
}

.accordion-trigger {
  appearance: none;
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; text-align: left;
  background: var(--brand);
  color: var(--text-on-brand);
  border: 0; padding: 0.75rem 1rem; cursor: pointer;
  font-size: 0.875rem; font-weight: 600;
  line-height: 1.2;
}
.accordion-trigger:hover,
.accordion-trigger:focus-visible {
  outline: 2px solid var(--text-on-brand);
  outline-offset: -2px;
  background: var(--hover-on-brand);
}
.accordion-trigger::after {
  content: "▸";
  color: var(--text-on-brand);
  transition: transform var(--speed) ease;
  margin-left: 1rem; flex-shrink: 0;
}
.accordion-trigger[aria-expanded="true"]::after { transform: rotate(90deg); }

.accordion-panel {
  padding: 0 1.25rem 1rem 1.25rem;
  background: var(--brand);
  color: var(--text-on-brand);
  border-top: 1px solid var(--border-on-brand);
}
.accordion-panel[hidden] { display: none; }

/* Lists inside panels */
.accordion-panel ul { margin: 0.25rem 0 0 1.25rem; }
.accordion-panel li { margin: 0.25rem 0; }

/* Optional: make lists/bullets a touch brighter */
.accordion-panel li::marker { color: var(--text-on-brand); }