* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background-page);
  color: var(--foreground-default-primary);
  font-family: var(--typography-body-font-family);
}

main {
  max-width: 1056px;
  margin: 48px auto;
  padding: 0 16px;
}

.themes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

section {
  padding: 24px;
  background: var(--background-page);
  color: var(--foreground-default-primary);
  border: var(--border-width) solid var(--border-base);
  border-radius: var(--radius-base);
}

h1,
p {
  margin: 0;
}

h1 {
  margin-bottom: 16px;
  font-family: var(--typography-heading-font-family);
  font-size: var(--typography-heading-font-size);
  font-weight: var(--typography-heading-font-weight);
  line-height: var(--typography-heading-line-height);
  letter-spacing: var(--typography-heading-letter-spacing);
}

.accordion {
  display: grid;
  width: min(480px, 100%);
  gap: var(--padding-base);
}

.accordion details {
  overflow: hidden;
  background: var(--component-accordion-background);
  border: var(--border-width) solid var(--component-accordion-border);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-lift-x) var(--shadow-lift-y) var(--shadow-lift-blur)
    var(--shadow-lift-spread) var(--shadow-lift-color);
}

.accordion details[open] {
  border-color: var(--component-accordion-border-active);
}

.accordion summary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: var(--padding-base) var(--padding-loose) var(--padding-base)
    var(--padding-base);
  color: var(--component-accordion-foreground);
  font-family: var(--typography-body-strong-font-family);
  font-size: var(--typography-body-strong-font-size);
  font-weight: var(--typography-body-strong-font-weight);
  line-height: var(--typography-heading-line-height);
  letter-spacing: var(--typography-body-strong-letter-spacing);
  cursor: pointer;
  list-style: none;
}

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

.accordion summary::before {
  width: 8px;
  height: 8px;
  border-top: var(--border-width) solid currentColor;
  border-right: var(--border-width) solid currentColor;
  content: "";
  flex: 0 0 8px;
  margin: 0 4px;
  transform: rotate(135deg);
}

.accordion details[open] summary {
  background: var(--component-accordion-background-active);
  color: var(--component-accordion-foreground-active);
  border-bottom: var(--border-width) solid var(--component-accordion-border-active);
}

.accordion details[open] summary::before {
  transform: rotate(-45deg);
}

.accordion summary:focus-visible {
  outline: 2px solid var(--border-brand);
  outline-offset: -2px;
}

.accordion__body {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 6px;
  padding: var(--padding-loose) var(--padding-loose) var(--padding-loose)
    var(--padding-base);
}

.accordion__body::before {
  width: 16px;
  height: 16px;
  content: "";
}

.accordion__body p {
  color: var(--foreground-default-secondary);
  font-family: var(--typography-body-font-family);
  font-size: var(--typography-body-font-size);
  font-weight: var(--typography-body-font-weight);
  line-height: var(--typography-body-line-height);
  letter-spacing: var(--typography-body-letter-spacing);
}

@media (max-width: 720px) {
  .themes {
    grid-template-columns: 1fr;
  }
}