.page-faq {
  display: block;
  color: var(--paper-100);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .fq-hero {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 4.5vw, 52px) 0 clamp(20px, 3.5vw, 36px);
}

.page-faq .fq-hero__main {
  min-width: 0;
}

.page-faq .fq-hero__title {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(38px, 7.2vw, 74px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper-100);
}

.page-faq .fq-hero__lead {
  max-width: 40ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist-400);
}

.page-faq .fq-hero__note {
  margin: 22px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--orange-500);
  background: linear-gradient(100deg, rgba(255, 122, 26, .14), rgba(255, 122, 26, 0) 72%);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-100);
}

.page-faq .fq-hero__side {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--ink-900);
  border: 1px solid var(--line);
}

.page-faq .fq-hero__side::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 64px;
  height: 3px;
  background: var(--cyan-400);
}

.page-faq .fq-side__label {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .fq-hero__stats {
  display: grid;
  gap: 0;
  margin: 0 0 18px;
}

.page-faq .fq-hero__stats .stat {
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .fq-hero__stats .stat__value {
  font-family: var(--font-num);
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}

.page-faq .fq-hero__stats .stat__unit {
  margin-left: 6px;
  font-size: 14px;
  color: var(--mist-400);
}

.page-faq .fq-hero__stats .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist-400);
}

.page-faq .fq-side__btn {
  width: 100%;
  justify-content: center;
}

/* ---------- 分类索引 ---------- */
.page-faq .fq-index {
  display: flex;
  gap: 0;
  margin-bottom: clamp(24px, 4vw, 40px);
  overflow-x: auto;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .fq-index__item {
  flex: 0 0 auto;
  padding: 14px 20px;
  border-right: 1px solid var(--line-soft);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--mist-400);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .fq-index__item:hover,
.page-faq .fq-index__item:focus-visible {
  color: var(--cyan-400);
  background: rgba(44, 242, 200, .07);
}

/* ---------- 章节骨架 ---------- */
.page-faq .fq-sec {
  display: grid;
  gap: 22px;
  padding: clamp(28px, 4.6vw, 50px) 0;
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: 90px;
}

.page-faq .fq-sec__head {
  min-width: 0;
}

.page-faq .fq-sec__title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper-100);
}

.page-faq .fq-sec__lead {
  max-width: 34ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist-400);
}

.page-faq .fq-sec__body {
  min-width: 0;
}

/* ---------- 图像 ---------- */
.page-faq .fq-shot {
  position: relative;
  margin: 0 0 24px;
  overflow: hidden;
  background: var(--ink-900);
  border: 1px solid var(--line-soft);
}

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

.page-faq .fq-shot--wide img {
  aspect-ratio: 5 / 3;
}

.page-faq .fq-shot .media-frame__tag {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .16em;
}

/* ---------- 关键数字条 ---------- */
.page-faq .fq-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: 26px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .fq-facts__item {
  padding: 16px 14px;
  background: var(--ink-900);
}

.page-faq .fq-facts__v {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
}

.page-faq .fq-facts__item:nth-child(2) .fq-facts__v {
  color: var(--amber-300);
}

.page-faq .fq-facts__item:nth-child(3) .fq-facts__v {
  color: var(--orange-500);
}

.page-faq .fq-facts__k {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: .03em;
  color: var(--mist-400);
}

/* ---------- 问答组 ---------- */
.page-faq .qa-list {
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: start;
  border-bottom: 1px solid var(--line-soft);
  transition: background var(--t-fast) var(--ease);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--cyan-400);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform var(--t-mid) var(--ease);
}

.page-faq .qa:has(.fold[open])::before {
  transform: scaleY(1);
}

.page-faq .qa:hover {
  background: rgba(44, 242, 200, .035);
}

.page-faq .qa__no {
  padding-top: 19px;
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--mist-400);
  font-variant-numeric: tabular-nums;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .qa:has(.fold[open]) .qa__no {
  color: var(--cyan-400);
}

.page-faq .qa .fold__summary {
  padding: 17px 16px 17px 0;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .qa__q {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -.005em;
}

.page-faq .qa .fold__body {
  padding: 0 16px 20px 0;
}

.page-faq .qa .fold__body p {
  max-width: 48ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist-400);
}

/* ---------- 图文并排 ---------- */
.page-faq .fq-split {
  display: grid;
  gap: 22px;
}

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

/* ---------- 结尾条 ---------- */
.page-faq .fq-tail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 26px;
  padding: 16px 18px;
  border-left: 3px solid var(--cyan-400);
  background: var(--ink-900);
}

.page-faq .fq-tail__text {
  flex: 1 1 260px;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper-100);
}

.page-faq .fq-back {
  margin: 28px 0 0;
  text-align: left;
}

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

  .page-faq .qa {
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .page-faq .qa .fold__summary {
    padding-right: 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .fq-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .fq-split .fq-shot {
    margin-bottom: 0;
  }
}

@media (min-width: 1024px) {
  .page-faq .fq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .fq-sec {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .fq-hero__side {
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa::before,
  .page-faq .qa__no,
  .page-faq .fq-index__item {
    transition: none;
  }
}