/* ===== 页面：常见问题 ===== */
.page-faq {
  --faq-line: rgba(20, 24, 26, 0.14);
  --faq-line-light: rgba(243, 241, 233, 0.16);
}

/* 面包屑 */
.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 16px 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--stone);
}
.page-faq .faq-crumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.page-faq .faq-crumb li + li::before {
  content: "/";
  color: var(--stone);
  opacity: 0.55;
}
.page-faq .faq-crumb a {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: min(600px, 74vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle at 42% 42%, rgba(200, 255, 61, 0.14), transparent 64%);
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: end;
  padding: clamp(36px, 5vw, 80px) 0 clamp(36px, 5vw, 72px);
}
.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(1.7rem, 1rem + 2.6vw, 3rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.022em;
  color: var(--paper);
}
.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 34em;
  color: rgba(243, 241, 233, 0.78);
}
.page-faq .faq-hero__media {
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--glass);
  border: 1px solid var(--faq-line-light);
}
.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 700;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.96);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

/* 跳转条 */
.page-faq .faq-jump {
  background: var(--charcoal);
  border-bottom: 1px solid var(--faq-line-light);
}
.page-faq .faq-jump__list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-jump__list li {
  margin: 0;
}
.page-faq .faq-jump__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 15px 18px;
  font-size: 0.88rem;
  text-decoration: none;
  color: rgba(243, 241, 233, 0.72);
  border-bottom: 2px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}
.page-faq .faq-jump__list a:hover,
.page-faq .faq-jump__list a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}
.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--signal);
}

/* 分组容器 */
.page-faq .faq-groups {
  padding: clamp(40px, 6vw, 88px) 0;
}
.page-faq .faq-group {
  display: grid;
  gap: clamp(16px, 2vw, 26px);
  padding: clamp(36px, 5vw, 64px) 0;
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-group:first-child {
  padding-top: 0;
  border-top: 0;
}
.page-faq .faq-group:last-child {
  padding-bottom: 0;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--clay);
}

.page-faq .faq-group__head {
  margin: 0 0 18px;
}
.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.32rem, 1.02rem + 1.2vw, 1.86rem);
  font-weight: 900;
  line-height: 1.34;
  letter-spacing: -0.016em;
  color: var(--charcoal);
}
.page-faq .faq-group__note {
  margin: 10px 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

@media (min-width: 860px) {
  .page-faq .faq-group {
    grid-template-columns: 92px minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
  }
  .page-faq .faq-group__num {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    align-self: start;
    font-size: clamp(2.6rem, 1.4rem + 3vw, 4.4rem);
    letter-spacing: 0.03em;
  }
}

/* 组内配图 */
.page-faq .faq-group__figure {
  margin: 0 0 22px;
  border: 1px solid var(--faq-line);
  border-radius: 4px;
  overflow: hidden;
  background: rgba(47, 107, 79, 0.05);
}
.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 700;
  object-fit: cover;
}
.page-faq .faq-group__figure figcaption {
  padding: 12px 16px;
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--stone);
  border-top: 1px solid var(--faq-line);
  background: rgba(47, 107, 79, 0.06);
}

/* 问答条目 */
.page-faq .faq-item {
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-item > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 19px 46px 19px 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.58;
  color: var(--charcoal);
  transition: color 160ms var(--ease);
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--moss);
  border-bottom: 2px solid var(--moss);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 220ms var(--ease), border-color 160ms var(--ease);
}
.page-faq .faq-item[open] > summary::after {
  transform: translateY(-24%) rotate(-135deg);
  border-color: var(--clay);
}
.page-faq .faq-item > summary:hover {
  color: var(--moss);
}
.page-faq .faq-item > summary:focus-visible {
  outline: 2px dashed var(--clay);
  outline-offset: 3px;
  border-radius: 2px;
}

.page-faq .faq-item__a {
  padding: 0 0 22px;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .faq-item__a p {
  margin: 0;
  max-width: 42em;
}
.page-faq .faq-item__a p + p {
  margin-top: 10px;
}
.page-faq .faq-item__a a {
  color: var(--moss);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 160ms var(--ease);
}
.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--clay);
}

@media (min-width: 860px) {
  .page-faq .faq-item__a {
    padding-right: clamp(20px, 6vw, 72px);
  }
}

/* 数字强调 */
.page-faq .num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--moss);
  letter-spacing: 0.01em;
  padding: 0 1px;
}

/* 窄屏兜底 */
@media (max-width: 599px) {
  .page-faq .faq-jump__list a {
    padding: 13px 12px;
    font-size: 0.82rem;
    gap: 7px;
  }
  .page-faq .faq-group__num {
    font-size: 1.8rem;
  }
  .page-faq .faq-item > summary {
    padding-right: 38px;
    font-size: 0.96rem;
  }
  .page-faq .faq-item > summary::after {
    right: 4px;
    width: 9px;
    height: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__media img,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-jump__list a,
  .page-faq .faq-item__a a {
    transition: none;
  }
}