.yirong-faq {
  --yirong-faq-bg: #eee8dc;
  --yirong-faq-ink: #171813;
  --yirong-faq-muted: #68645b;
  --yirong-faq-accent: #967748;
  --yirong-faq-rule: rgba(23, 24, 19, 0.2);
  overflow: clip;
  interpolate-size: allow-keywords;
  background: var(--yirong-faq-bg);
  color: var(--yirong-faq-ink);
  padding: clamp(88px, 9vw, 144px) clamp(20px, 4vw, 64px);
}

.yirong-faq__inner {
  display: grid;
  grid-template-columns: minmax(280px, 3fr) minmax(0, 5fr);
  gap: clamp(64px, 9vw, 144px);
  width: min(100%, 1440px);
  margin-inline: auto;
}

.yirong-faq__intro {
  position: sticky;
  top: 48px;
  align-self: start;
}

.yirong-faq__eyebrow,
.yirong-faq__group-label {
  margin: 0 0 18px;
  color: var(--yirong-faq-accent);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.yirong-faq__title {
  max-width: 560px;
  margin: 0;
  font-size: clamp(3.5rem, 4.5vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.yirong-faq__summary {
  max-width: 500px;
  margin: 28px 0 0;
  color: var(--yirong-faq-muted);
  font-size: clamp(1rem, 0.94rem + 0.2vw, 1.125rem);
  line-height: 1.7;
}

.yirong-faq__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 30px;
  color: var(--yirong-faq-ink);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
}

.yirong-faq__link span {
  margin-left: 12px;
  transition: transform var(--yirong-motion-fast) var(--yirong-motion-ease);
}

.yirong-faq__link:hover span,
.yirong-faq__link:focus-visible span {
  transform: translateX(5px);
}

.yirong-faq__content {
  min-width: 0;
}

.yirong-faq__group + .yirong-faq__group {
  margin-top: clamp(56px, 6vw, 88px);
}

.yirong-faq__group-label {
  display: flex;
  gap: 16px;
  margin-bottom: 8px;
}

.yirong-faq__group-label span {
  color: var(--yirong-faq-ink);
}

.yirong-faq__item {
  border-top: 1px solid var(--yirong-faq-rule);
  transition: border-color var(--yirong-motion-fast) var(--yirong-motion-ease);
}

.yirong-faq__item:last-child {
  border-bottom: 1px solid var(--yirong-faq-rule);
}

.yirong-faq__item:hover,
.yirong-faq__item[open] {
  border-color: var(--yirong-faq-accent);
}

.yirong-faq__summary-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 28px;
  align-items: center;
  gap: 24px;
  min-height: 82px;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
}

.yirong-faq__summary-control::-webkit-details-marker {
  display: none;
}

.yirong-faq__question {
  font-size: clamp(1.125rem, 1rem + 0.4vw, 1.375rem);
  font-weight: 520;
  letter-spacing: -0.018em;
  line-height: 1.35;
  transition: color var(--yirong-motion-fast) var(--yirong-motion-ease), transform var(--yirong-motion-fast) var(--yirong-motion-ease);
}

.yirong-faq__summary-control:hover .yirong-faq__question,
.yirong-faq__summary-control:focus-visible .yirong-faq__question {
  color: #725831;
  transform: translateX(5px);
}

.yirong-faq__indicator {
  position: relative;
  width: 22px;
  height: 22px;
}

.yirong-faq__indicator::before,
.yirong-faq__indicator::after {
  position: absolute;
  top: 10px;
  left: 2px;
  width: 18px;
  height: 2px;
  background: currentColor;
  content: '';
  transition: transform var(--yirong-motion-fast) var(--yirong-motion-ease);
}

.yirong-faq__indicator::after {
  transform: rotate(90deg);
}

.yirong-faq__item[open] .yirong-faq__indicator::before {
  transform: rotate(45deg);
}

.yirong-faq__item[open] .yirong-faq__indicator::after {
  transform: rotate(135deg);
}

.yirong-faq__item::details-content {
  block-size: 0;
  overflow-y: clip;
  opacity: 0;
  transition: block-size 350ms var(--yirong-motion-ease), content-visibility 350ms allow-discrete, opacity 350ms var(--yirong-motion-ease);
}

.yirong-faq__item[open]::details-content {
  block-size: auto;
  opacity: 1;
}

.yirong-faq__answer {
  padding: 0 52px 28px 0;
}

.yirong-faq__answer-copy {
  max-width: 760px;
  margin: 0;
  color: var(--yirong-faq-muted);
  font-size: clamp(0.9375rem, 0.9rem + 0.15vw, 1.0625rem);
  line-height: 1.75;
}

.yirong-faq__summary-control:focus-visible,
.yirong-faq__link:focus-visible {
  outline: 3px solid var(--yirong-faq-accent);
  outline-offset: 5px;
}

.yirong-faq.is-motion-ready [data-faq-reveal] {
  opacity: 0;
  transform: translateY(24px);
}

.yirong-faq.is-motion-ready [data-faq-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--yirong-motion-section) var(--yirong-motion-ease), transform var(--yirong-motion-section) var(--yirong-motion-ease);
}

.yirong-faq__group [data-faq-reveal]:nth-of-type(2) { transition-delay: 80ms; }
.yirong-faq__group [data-faq-reveal]:nth-of-type(3) { transition-delay: 160ms; }
.yirong-faq__group [data-faq-reveal]:nth-of-type(4) { transition-delay: 240ms; }

@media (max-width: 1099px) {
  .yirong-faq__inner {
    grid-template-columns: 1fr;
    gap: 64px;
  }

  .yirong-faq__intro {
    position: static;
  }

  .yirong-faq__content {
    width: min(100%, 880px);
  }
}

@media (max-width: 767px) {
  .yirong-faq {
    padding-inline: 20px;
  }

  .yirong-faq__inner {
    gap: 48px;
  }

  .yirong-faq__title {
    font-size: clamp(2.5rem, 12vw, 3.5rem);
  }

  .yirong-faq__summary-control {
    grid-template-columns: minmax(0, 1fr) 24px;
    gap: 16px;
    min-height: 52px;
    padding-block: 18px;
  }

  .yirong-faq__answer {
    padding-right: 24px;
  }
}