/* extra page styles */
.track-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  background: var(--bg);
}
.track-cell {
  padding: 18px 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-align: center;
  color: var(--fg-2);
  background: var(--bg-2);
}
.track-cell:nth-child(4n) { border-right: 0; }
.track-cell:nth-last-child(-n+4) { border-bottom: 0; }
@media (max-width: 660px) {
  .track-grid { grid-template-columns: repeat(2, 1fr); }
  .track-cell:nth-child(4n) { border-right: 1px solid var(--line); }
  .track-cell:nth-child(2n) { border-right: 0; }
}

.faq {
  border: 1px solid var(--line);
  background: var(--bg-2);
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:last-child { border-bottom: 0; }
.faq-item summary {
  cursor: pointer;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 500;
  list-style: none;
  display: flex;
  align-items: center;
  position: relative;
  transition: background .15s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--fg-3);
  transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--accent); }
.faq-item summary:hover { background: var(--bg-3); }
.faq-item p {
  padding: 0 24px 20px 24px;
  color: var(--fg-2);
  font-size: 14px;
  max-width: 80ch;
  margin-left: 56px;
}