.page-faq {
  --faq-line-strong: rgba(182, 255, 60, .5);
  background:
    radial-gradient(1150px 560px at 80% -8%, rgba(53, 208, 208, .10), transparent 62%),
    radial-gradient(900px 520px at 4% 16%, rgba(182, 255, 60, .07), transparent 64%);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-crumbs {
  padding-top: clamp(14px, 3vw, 26px);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 5vw, 58px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero__title {
  margin: 14px 0 16px;
  font-size: clamp(2.3rem, 6vw, 4.4rem);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 15ch;
}

.page-faq .faq-hero__lede {
  color: var(--mist);
  font-size: 16px;
  line-height: 1.78;
  max-width: 46ch;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 44px);
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__stats .stat__value {
  color: var(--lime);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1;
}

.page-faq .faq-hero__stats .stat__label {
  color: var(--gray);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__frame {
  position: relative;
  border: 1px solid var(--line);
  background: var(--stand);
  overflow: hidden;
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(140, 153, 171, .16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 153, 171, .16) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}

.page-faq .faq-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .82;
}

.page-faq .faq-hero__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: rgba(22, 39, 63, .82);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
}

/* ---------- 索引 + 分组主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--stand);
  padding: 18px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
}

.page-faq .faq-index__toc {
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 4px;
  color: var(--gray);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color .16s ease, border-color .16s ease, padding-left .16s ease;
}

.page-faq .faq-index__link .toc__num {
  flex: none;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gray);
  transition: color .16s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible,
.page-faq .faq-index__link[aria-current="true"] {
  color: var(--white);
  border-color: var(--faq-line-strong);
  padding-left: 10px;
}

.page-faq .faq-index__link:hover .toc__num,
.page-faq .faq-index__link:focus-visible .toc__num,
.page-faq .faq-index__link[aria-current="true"] .toc__num {
  color: var(--lime);
}

.page-faq .faq-index__note {
  margin-top: 18px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-index__note p {
  margin: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-top: clamp(32px, 4vw, 54px);
  padding-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
}

.page-faq .faq-group__num {
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1;
  letter-spacing: .04em;
  color: rgba(182, 255, 60, .34);
}

.page-faq .faq-group__lede {
  margin: 10px 0 0;
  color: var(--gray);
  font-size: 14.5px;
  line-height: 1.72;
  max-width: 54ch;
}

.page-faq .faq-group__list {
  margin-top: 18px;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--line-soft);
  transition: border-color .18s ease;
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item[open] {
  border-top-color: var(--faq-line-strong);
}

.page-faq .faq-item__summary {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-item__summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__num {
  flex: none;
  min-width: 36px;
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gray);
  transition: color .18s ease;
}

.page-faq .faq-item__q {
  font-size: clamp(15.5px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.62;
  color: var(--mist);
  transition: color .18s ease;
}

.page-faq .faq-item__summary:hover .faq-item__q,
.page-faq .faq-item__summary:focus-visible .faq-item__q {
  color: var(--lime);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--orange);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--white);
}

.page-faq .faq-item__body {
  padding: 0 0 22px;
}

.page-faq .faq-answer {
  display: grid;
  gap: 16px;
}

.page-faq .faq-answer__main p {
  margin: 0 0 12px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-answer__main p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-answer__main a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 60, .45);
  transition: border-color .16s ease, color .16s ease;
}

.page-faq .faq-answer__main a:hover,
.page-faq .faq-answer__main a:focus-visible {
  color: var(--white);
  border-color: var(--white);
}

.page-faq .faq-answer__aside {
  border-left: 2px solid var(--line-soft);
  padding-left: 14px;
  color: var(--gray);
  font-size: 12.5px;
  line-height: 1.72;
}

.page-faq .faq-answer__aside p {
  margin: 0;
}

.page-faq .faq-answer__aside a {
  color: var(--gray);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

/* ---------- 字段定义表 ---------- */
.page-faq .faq-table {
  margin-bottom: 12px;
  overflow-x: auto;
  border: 1px solid var(--line);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table .data-table {
  width: 100%;
  min-width: 440px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table .data-table th,
.page-faq .faq-table .data-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  color: var(--mist);
}

.page-faq .faq-table .data-table thead th {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gray);
  font-weight: 500;
}

.page-faq .faq-table .data-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table .data-table td:last-child {
  font-family: var(--mono);
  color: var(--lime);
}

.page-faq .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  max-width: 420px;
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background: var(--stand);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  opacity: .8;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  color: var(--gray);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
}

/* ---------- 收束按钮 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(24px, 3vw, 36px) 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 860px) {
  .page-faq .faq-answer {
    grid-template-columns: minmax(0, 1fr) 190px;
    gap: 26px;
    padding-left: 48px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(30px, 5vw, 64px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
    padding: 4px 0 4px 20px;
    border: 0;
    border-left: 2px solid var(--line);
    background: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__num,
  .page-faq .faq-item__q,
  .page-faq .faq-answer__main a {
    transition: none;
  }
}