.faq-section {
  padding: var(--sp-10) 0;
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  margin-bottom: var(--sp-3);
  overflow: hidden;
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
.faq-item[open] {
  border-color: var(--c-purple-soft);
  box-shadow: var(--shadow-md);
}
.faq-item summary {
  padding: 22px 26px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-3);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--c-purple);
  transition: transform var(--t-base);
  flex-shrink: 0;
  line-height: 1;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item p {
  padding: 0 26px 22px;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--c-text-soft);
}