.page-faq {
  --faq-rail: 296px;
  --faq-indent: 42px;
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 5vw, 54px) 0 clamp(26px, 4vw, 44px);
  background:
    radial-gradient(1080px 420px at 84% -12%, rgba(34, 224, 255, .12), transparent 62%),
    radial-gradient(760px 360px at 4% 110%, rgba(30, 107, 255, .10), transparent 65%),
    linear-gradient(158deg, var(--c-deep) 0%, var(--c-abyss) 100%);
  border-bottom: 1px solid var(--c-grid);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  max-width: 19ch;
  font-size: clamp(2.05rem, 5.4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: var(--t-body);
  line-height: 1.85;
  color: var(--c-dim);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 18px;
  border-top: 1px solid var(--c-grid);
}

.page-faq .faq-meta__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--t-sm);
  color: var(--c-dim);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: clamp(28px, 5vw, 52px) 0 clamp(46px, 7vw, 84px);
}

/* 左侧索引 */
.page-faq .faq-index {
  padding: 18px 16px 16px;
  background: linear-gradient(172deg, var(--c-panel) 0%, rgba(10, 23, 48, .72) 100%);
  border: 1px solid var(--c-grid);
  border-radius: var(--r-a) var(--r-a) var(--r-b) var(--r-a);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: var(--t-label);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-faint);
}

.page-faq .faq-index__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 232px;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-b) var(--r-b) 0;
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--c-dim);
  text-decoration: none;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.page-faq .faq-index__link:hover {
  color: var(--c-text);
  background: rgba(30, 107, 255, .12);
  border-left-color: var(--c-blue);
}

.page-faq .faq-index__link[aria-current="location"] {
  color: var(--c-cyan);
  background: rgba(34, 224, 255, .10);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--f-mono);
  font-size: var(--t-label);
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--c-cyan);
  opacity: .85;
}

.page-faq .faq-index__foot {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--c-grid);
}

.page-faq .faq-index__foot-k {
  font-size: var(--t-label);
  letter-spacing: .06em;
  color: var(--c-faint);
}

.page-faq .faq-index__foot-v {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--c-cyan);
  line-height: 1;
}

/* 答案区 */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-topic {
  margin-bottom: clamp(40px, 6vw, 68px);
}

.page-faq .faq-topic:last-of-type {
  margin-bottom: clamp(30px, 5vw, 52px);
}

.page-faq .faq-topic .section__head {
  margin-bottom: 22px;
}

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-item {
  border-top: 1px solid var(--c-grid);
}

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

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  font-size: var(--t-body);
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-text);
  transition: color 160ms ease;
}

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

.page-faq .faq-q:hover {
  color: var(--c-cyan);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-faq .faq-q__num {
  flex: none;
  padding-top: 4px;
  font-family: var(--f-mono);
  font-size: var(--t-label);
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--c-cyan);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-chev {
  flex: none;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border-right: 1.5px solid var(--c-dim);
  border-bottom: 1.5px solid var(--c-dim);
  transform: rotate(-45deg);
  transition: transform 200ms ease, border-color 200ms ease;
}

.page-faq .faq-q:hover .faq-chev {
  border-color: var(--c-cyan);
}

.page-faq .faq-item[open] > .faq-q {
  color: var(--c-mist);
}

.page-faq .faq-item[open] > .faq-q .faq-chev {
  transform: rotate(45deg);
  border-color: var(--c-cyan);
}

.page-faq .faq-a {
  padding: 0 4px 20px calc(4px + var(--faq-indent));
  font-size: var(--t-body);
  line-height: 1.85;
  color: var(--c-dim);
}

.page-faq .faq-a p {
  max-width: 68ch;
  margin: 0 0 10px;
}

.page-faq .faq-a p:last-of-type {
  margin-bottom: 12px;
}

.page-faq .faq-next {
  display: inline-block;
  margin-top: 2px;
  padding-bottom: 2px;
  font-size: var(--t-sm);
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 255, .38);
  transition: color 160ms ease, border-color 160ms ease;
}

.page-faq .faq-next::after {
  content: " →";
  font-family: var(--f-mono);
}

.page-faq .faq-next:hover {
  color: var(--c-mist);
  border-bottom-color: var(--c-mist);
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--c-grid);
  border-radius: var(--r-b) var(--r-a) var(--r-b) var(--r-a);
  overflow: hidden;
  background: var(--c-panel);
}

.page-faq .faq-figure .media-frame__inner {
  display: block;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .media-frame__caption {
  padding: 10px 14px 12px;
  font-size: var(--t-label);
  line-height: 1.6;
  color: var(--c-faint);
  border-top: 1px solid var(--c-grid);
}

/* 费用表 */
.page-faq .faq-fee-panel {
  margin-bottom: 26px;
  padding: 6px 4px 4px;
  overflow-x: auto;
}

.page-faq .faq-fee-panel .data-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: var(--t-sm);
}

.page-faq .faq-table-caption {
  padding: 12px 12px 14px;
  text-align: left;
  font-size: var(--t-label);
  letter-spacing: .06em;
  color: var(--c-faint);
}

.page-faq .faq-fee-panel th,
.page-faq .faq-fee-panel td {
  padding: 14px 12px;
  text-align: left;
  vertical-align: top;
  border-top: 1px solid var(--c-grid);
}

.page-faq .faq-fee-panel thead th {
  border-top: none;
  font-size: var(--t-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-faint);
  font-weight: 700;
}

.page-faq .faq-fee-panel tbody th {
  font-weight: 700;
  color: var(--c-text);
}

.page-faq .faq-fee-panel tbody td {
  color: var(--c-dim);
  line-height: 1.7;
}

.page-faq .faq-free {
  color: var(--c-ok);
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-charged {
  color: var(--c-warm);
  font-weight: 600;
  white-space: nowrap;
}

/* 底部引导 */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: clamp(22px, 4vw, 32px);
  background:
    radial-gradient(620px 260px at 100% 0%, rgba(255, 138, 61, .14), transparent 66%),
    linear-gradient(140deg, var(--c-panel) 0%, rgba(5, 11, 26, .9) 100%);
  border: 1px solid var(--c-grid);
  border-radius: var(--r-a) var(--r-b) var(--r-a) var(--r-a);
}

.page-faq .faq-cta__body {
  min-width: 0;
  flex: 1 1 320px;
}

.page-faq .faq-cta__title {
  margin: 0 0 8px;
  font-size: var(--t-3);
  font-weight: 800;
  color: var(--c-text);
  letter-spacing: -0.01em;
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 62ch;
  font-size: var(--t-sm);
  line-height: 1.8;
  color: var(--c-dim);
}

.page-faq .faq-cta__text a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 255, .38);
}

.page-faq .faq-cta__text a:hover {
  color: var(--c-mist);
}

.page-faq .faq-cta .btn {
  flex: none;
}

@media (min-width: 700px) {
  .page-faq .faq-index__list {
    max-height: none;
    overflow: visible;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 108px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }

  .page-faq .faq-hero__lead {
    max-width: 58ch;
  }
}

@media (min-width: 1140px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 336px;
    align-items: start;
    gap: 34px;
  }

  .page-faq .faq-split--reverse {
    grid-template-columns: minmax(0, 1fr) 336px;
  }

  .page-faq .faq-split--reverse .faq-figure {
    order: 2;
  }

  .page-faq .faq-split--reverse .faq-list {
    order: 1;
  }
}

@media (max-width: 560px) {
  .page-faq {
    --faq-indent: 26px;
  }

  .page-faq .faq-a {
    padding-left: 4px;
  }

  .page-faq .faq-q {
    gap: 9px;
  }

  .page-faq .faq-hero__meta {
    gap: 8px 18px;
  }

  .page-faq .faq-cta .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chev,
  .page-faq .faq-q,
  .page-faq .faq-index__link,
  .page-faq .faq-next {
    transition: none;
  }
}