.page-faq {
  --faq-index-w: 208px;
  --faq-gap: clamp(28px, 4vw, 64px);
  --faq-anchor: calc(var(--lj-header-h) + 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(100px, 15vh, 168px) 0 clamp(40px, 6vw, 76px);
  background:
    linear-gradient(135deg, transparent 0 53%, rgba(0, 229, 160, .075) 53% 100%),
    linear-gradient(180deg, var(--lj-ink) 0%, var(--lj-panel) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--lj-line);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: end;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero__title {
  font-family: var(--lj-font-display);
  font-weight: 800;
  font-size: clamp(38px, 7.4vw, 76px);
  line-height: 1.02;
  letter-spacing: -.012em;
  margin: 14px 0 0;
  max-width: 15ch;
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 52ch;
  color: var(--lj-muted);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 3.6vw, 52px);
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: clamp(18px, 2.4vw, 24px) 0 0;
  list-style: none;
  border-top: 1px solid var(--lj-line);
}

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

.page-faq .faq-stat__num {
  font-size: clamp(28px, 4.4vw, 42px);
  line-height: 1;
  font-weight: 700;
}

.page-faq .faq-stat__label {
  font-family: var(--lj-font-num);
  font-size: 12px;
  letter-spacing: .09em;
  color: var(--lj-muted);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--lj-line);
  background: var(--lj-print);
}

.page-faq .faq-hero__media .lj-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.72) contrast(1.04);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: clamp(48px, 7vw, 96px) 0 clamp(64px, 9vw, 120px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  border-top: 1px solid var(--lj-line);
  padding-top: 16px;
}

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

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--lj-line);
  color: var(--lj-muted);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  transition: color .22s var(--lj-ease), border-color .22s var(--lj-ease), background-color .22s var(--lj-ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--lj-text);
  border-color: var(--lj-accent);
  background: rgba(0, 229, 160, .06);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--lj-font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--lj-accent);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-topic {
  scroll-margin-top: var(--faq-anchor);
}

.page-faq .faq-topic + .faq-topic {
  margin-top: clamp(48px, 7vw, 88px);
}

.page-faq .faq-topic__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--lj-line);
}

.page-faq .faq-topic__num {
  font-family: var(--lj-font-num);
}

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

.page-faq .faq-topic__intro {
  flex: 1 1 100%;
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--lj-muted);
}

.page-faq .faq-topic:target .faq-topic__head {
  border-bottom-color: rgba(0, 229, 160, .55);
}

.page-faq .faq-figure {
  margin: clamp(24px, 3.5vw, 36px) 0 0;
}

.page-faq .faq-figure .lj-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--lj-line);
  background: var(--lj-print);
  filter: saturate(.7) contrast(1.05);
}

.page-faq .faq-figure .lj-media__caption {
  margin-top: 10px;
  font-family: var(--lj-font-num);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--lj-muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--lj-line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--lj-font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.42;
  color: var(--lj-text);
  transition: color .22s var(--lj-ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--lj-accent);
  outline: none;
}

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

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: .42em;
  color: var(--lj-accent);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::before {
  width: 14px;
  height: 1.5px;
}

.page-faq .faq-item__mark::after {
  width: 1.5px;
  height: 14px;
  transition: transform .28s var(--lj-ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--lj-warm);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

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

.page-faq .faq-item__body {
  padding: 0 0 22px;
  max-width: 68ch;
  color: var(--lj-muted);
  font-size: 15.5px;
  line-height: 1.78;
}

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

.page-faq .faq-item__body a {
  color: var(--lj-soft);
  text-decoration: underline;
  text-decoration-color: rgba(0, 229, 160, .5);
  text-underline-offset: 3px;
}

.page-faq .faq-item__body a:hover {
  color: var(--lj-accent);
  text-decoration-color: var(--lj-accent);
}

.page-faq .faq-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faq-body-in .3s var(--lj-ease) both;
}

@keyframes faq-body-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 追问区块 ---------- */
.page-faq .faq-help {
  position: relative;
  margin-top: clamp(24px, 3.5vw, 36px);
  padding: clamp(26px, 4vw, 48px);
  background: var(--lj-panel);
  border: 1px solid var(--lj-line);
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -1px;
  width: 16px;
  height: 16px;
  background: var(--lj-warm);
}

.page-faq .faq-help__lead {
  margin: 14px 0 0;
  max-width: 46ch;
  color: var(--lj-text);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 9px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--lj-text);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 10px;
  height: 1px;
  background: var(--lj-accent);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: clamp(22px, 3vw, 30px);
  padding-top: clamp(20px, 2.6vw, 26px);
  border-top: 1px dashed var(--lj-line);
}

.page-faq .faq-help__mail {
  font-family: var(--lj-font-num);
  font-size: 15px;
  color: var(--lj-accent);
  word-break: break-all;
}

.page-faq .faq-help__meta {
  margin: 18px 0 0;
  max-width: 62ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-item__body {
    padding-left: 28px;
  }
}

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

  .page-faq .faq-hero__media {
    transform: translateY(30px);
  }

  .page-faq .faq-figure {
    margin-left: clamp(24px, 5vw, 72px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-anchor);
    border-top: 0;
    padding-top: 0;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    margin-top: 18px;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-left: 2px solid var(--lj-line);
    padding: 11px 0 11px 15px;
    white-space: normal;
    background: none;
  }

  .page-faq .faq-index__link::before {
    content: "";
    position: absolute;
    left: -2px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--lj-accent);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform .28s var(--lj-ease);
  }

  .page-faq .faq-index__link:hover::before,
  .page-faq .faq-index__link:focus-visible::before {
    transform: scaleY(1);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: none;
    border-color: var(--lj-line);
    color: var(--lj-text);
  }

  .page-faq .faq-index__link:hover .faq-index__num,
  .page-faq .faq-index__link:focus-visible .faq-index__num {
    color: var(--lj-accent);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-topic__head {
    align-items: center;
  }

  .page-faq .faq-topic__intro {
    flex: 1 1 auto;
    padding-left: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }

  .page-faq .faq-hero__media {
    transform: none;
  }

  .page-faq .faq-item__mark::after,
  .page-faq .faq-index__link::before,
  .page-faq .faq-index__link,
  .page-faq .faq-item__q {
    transition: none;
  }
}