.product-demo {
  --demo-ink: #17151f;
  --demo-muted: #63606c;
  --demo-purple: #7541ef;
  color: var(--demo-ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  padding: 76px 28px;
  background: #fff;
  scroll-margin-top: 76px;
}
.product-demo *, .product-demo *::before, .product-demo *::after { box-sizing: border-box; }
.product-demo .product-demo__layout {
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(0, 1.3fr);
  align-items: center;
  gap: clamp(36px, 5vw, 72px);
  max-width: 1160px;
  margin: 0 auto;
}
.product-demo .product-demo__intro, .product-demo .product-demo__qa { min-width: 0; }
.product-demo h2 { font-size: clamp(32px, 3vw, 42px); line-height: 1.3; letter-spacing: -1.5px; margin: 0; font-weight: 700; color: var(--demo-ink); text-wrap: balance; }
.product-demo .product-demo__summary { font-size: 18px; line-height: 1.85; color: #4c4757; margin: 22px 0 0; max-width: 27em; }
.product-demo .product-demo__cta { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 21px; border-radius: 26px; background: var(--demo-purple); color: #fff; font-size: 16px; line-height: 1.4; margin: 24px 0 0; text-decoration: none; transition: background .15s ease; }
.product-demo .product-demo__cta:hover { background: #6330d8; }
.product-demo .product-demo__cta:focus-visible { outline: 3px solid #7541ef; outline-offset: 4px; }
.product-demo .product-demo__qa-item { margin: 0; padding: 23px 0; border-bottom: 1px solid #e8e1f2; }
.product-demo .product-demo__qa-item:first-child { padding-top: 0; }
.product-demo .product-demo__qa-item:last-child { padding-bottom: 0; border-bottom: 0; }
.product-demo .product-demo__qa-item h3 { margin: 0 0 14px; font-size: 18px; font-weight: 600; line-height: 1.6; color: #5b3a8c; }
.product-demo .product-demo__qa-item dl { margin: 0; }
.product-demo .product-demo__qa-item dl > div { display: grid; grid-template-columns: 1em minmax(0, 1fr); column-gap: 15px; font-size: 17px; line-height: 1.85; }
.product-demo .product-demo__qa-item dl > div + div { margin-top: 9px; }
.product-demo .product-demo__qa-item dt { font-weight: 600; color: var(--demo-purple); }
.product-demo .product-demo__qa-item dd { margin: 0; color: var(--demo-ink); overflow-wrap: anywhere; }
.product-demo .product-demo__qa-item dl > div + div dd { color: #4c4757; }
@media (max-width: 900px) {
  .product-demo { padding: 56px 24px; }
  .product-demo .product-demo__layout { grid-template-columns: minmax(0, 1fr); gap: 36px; max-width: 660px; }
  .product-demo h2 { font-size: 36px; }
  .product-demo .product-demo__summary { max-width: 35em; margin-top: 16px; }
  .product-demo .product-demo__cta { margin-top: 18px; }
}
@media (max-width: 480px) {
  .product-demo { padding: 42px 20px; }
  .product-demo .product-demo__layout { gap: 32px; }
  .product-demo h2 { font-size: 30px; letter-spacing: -.8px; }
  .product-demo .product-demo__summary { font-size: 16px; line-height: 1.85; }
  .product-demo .product-demo__qa-item { padding: 21px 0; }
  .product-demo .product-demo__qa-item h3 { font-size: 17px; margin-bottom: 11px; }
  .product-demo .product-demo__qa-item dl > div { font-size: 16px; line-height: 1.85; column-gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .product-demo *, .product-demo *::before, .product-demo *::after { animation: none !important; transition: none !important; }
}