.page-faq {
  --faq-rail: 264px;
  --faq-gap: 36px;
  --faq-panel: rgba(18, 51, 40, .42);
  position: relative;
  background:
    radial-gradient(880px 520px at 88% -8%, rgba(198, 255, 61, .09), transparent 62%),
    linear-gradient(180deg, #0B1F17 0%, #0B1F17 58%, #0C231A 100%);
  color: var(--c-white);
}

.page-faq .faq-bc-sep {
  margin: 0 8px;
  color: var(--c-steel);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 52px) 0 48px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.page-faq .faq-hero__copy {
  max-width: 40ch;
}

.page-faq .faq-hero__copy .eyebrow {
  margin-top: 20px;
}

.page-faq .faq-hero__copy h1 {
  margin: 14px 0 0;
}

.page-faq .faq-hero__copy .lede {
  margin-top: 20px;
}

.page-faq .faq-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--c-charcoal);
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 31, 23, 0) 46%, rgba(11, 31, 23, .72) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--line);
}

.page-faq .faq-hero__stats .stat {
  background: rgba(17, 20, 23, .86);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__stats .stat-value {
  font-size: 30px;
  line-height: 1;
  color: var(--c-lime);
  letter-spacing: .02em;
}

.page-faq .faq-hero__stats .stat-label {
  color: var(--c-mist);
  font-size: 13px;
  letter-spacing: .04em;
}

/* ---------- 主体分屏 ---------- */
.page-faq .faq-body {
  padding: 48px 0 84px;
}

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

.page-faq .faq-rail {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(17, 20, 23, .7);
  padding: 20px 18px;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  color: var(--c-mist);
}

.page-faq .faq-rail__nav {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.page-faq .faq-cat {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  padding: 11px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(18, 51, 40, .5);
  color: var(--c-white);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color .22s var(--ease), background-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .faq-cat__no {
  font-size: 11px;
  color: var(--c-steel);
  letter-spacing: .1em;
  transition: color .22s var(--ease);
}

.page-faq .faq-cat:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-cat.is-active {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: #0B1F17;
}

.page-faq .faq-cat.is-active .faq-cat__no {
  color: rgba(11, 31, 23, .62);
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-panels {
  display: flex;
  flex-direction: column;
  gap: 54px;
  min-width: 0;
}

.page-faq .faq-group[id] {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 16px;
  align-items: start;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}

.page-faq .faq-group__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--c-matrix);
  border: 1px solid var(--line-strong);
  color: var(--c-lime);
}

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

.page-faq .faq-group__titles .label {
  color: var(--c-mist);
  margin: 2px 0 6px;
}

.page-faq .faq-group__titles h2 {
  margin: 0;
  font-size: clamp(24px, 4.6vw, 36px);
}

.page-faq .faq-group__lead {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  color: var(--c-mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--faq-panel) 0%, rgba(17, 20, 23, .76) 100%);
  overflow: hidden;
  transition: border-color .24s var(--ease), background-color .24s var(--ease);
}

.page-faq .qa:hover {
  border-color: var(--line-strong);
}

.page-faq .qa[open] {
  border-color: rgba(198, 255, 61, .34);
}

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 28px;
  align-items: start;
  gap: 14px;
  padding: 19px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__no {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-lime);
  padding-top: 5px;
}

.page-faq .qa__q {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-white);
}

.page-faq .qa__icon {
  position: relative;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  margin-top: 1px;
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.6px;
  background: var(--c-lime);
  transform: translate(-50%, -50%);
}

.page-faq .qa__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: opacity .24s var(--ease);
}

.page-faq .qa[open] .qa__icon {
  border-color: var(--c-lime);
  transform: rotate(180deg);
}

.page-faq .qa[open] .qa__icon::after {
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 20px 22px 62px;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(242, 245, 240, .82);
  max-width: 62ch;
}

/* ---------- 时间轴配图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--c-charcoal);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 14px 20px;
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--c-mist);
  border-top: 1px solid var(--line);
}

.page-faq .faq-list--follow {
  margin-top: 22px;
}

/* ---------- 联系渠道 ---------- */
.page-faq .faq-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-channel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(17, 20, 23, .78);
  text-decoration: none;
  color: var(--c-white);
  transition: border-color .24s var(--ease), background-color .24s var(--ease);
}

.page-faq .faq-channel:hover {
  border-color: rgba(198, 255, 61, .4);
  background: rgba(18, 51, 40, .58);
}

.page-faq .faq-channel__label {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-lime);
}

.page-faq .faq-channel__value {
  font-size: 15.5px;
  font-weight: 600;
  word-break: break-word;
}

.page-faq .faq-channel__meta {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 页尾引导 ---------- */
.page-faq .faq-next {
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background:
    radial-gradient(520px 260px at 90% 0%, rgba(198, 255, 61, .12), transparent 66%),
    linear-gradient(150deg, #123328 0%, #111417 100%);
  padding: 32px 26px;
}

.page-faq .faq-next .label {
  color: var(--c-lime);
  margin: 0 0 12px;
}

.page-faq .faq-next h2 {
  margin: 0;
  font-size: clamp(22px, 4vw, 32px);
  max-width: 22ch;
}

.page-faq .faq-next__text {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-mist);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-channels .faq-channel:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--header-h) + 84px);
    padding-bottom: 64px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-faq .faq-hero__media img {
    min-height: 320px;
  }

  .page-faq .faq-hero__stats {
    margin-top: 56px;
  }

  .page-faq .faq-body {
    padding-top: 64px;
    padding-bottom: 110px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding: 22px 20px;
  }

  .page-faq .faq-rail__nav {
    flex-direction: column;
    overflow: visible;
    gap: 8px;
  }

  .page-faq .faq-cat {
    width: 100%;
    justify-content: flex-start;
    padding: 12px 16px;
  }

  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 22ch);
    align-items: center;
  }

  .page-faq .faq-group__lead {
    grid-column: auto;
    margin: 0;
    text-align: right;
    font-size: 14px;
  }

  .page-faq .qa__summary {
    padding: 22px 26px;
  }

  .page-faq .qa__body {
    padding: 0 26px 24px 68px;
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-channels .faq-channel:last-child {
    grid-column: auto;
  }

  .page-faq .faq-next {
    padding: 44px 40px;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-hero__stats .stat-value {
    font-size: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__icon,
  .page-faq .qa__icon::after,
  .page-faq .faq-cat,
  .page-faq .faq-channel {
    transition: none;
  }
}