.page-faq {
  --faq-rail-w: 236px;
  background: var(--paper);
  color: var(--slate);
  font-family: var(--font-sans);
}

.page-faq .breadcrumb {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  margin-top: 14px;
  padding: clamp(38px, 7vw, 78px) 0 clamp(34px, 5vw, 58px);
  background: var(--night);
  color: var(--paper);
}

.page-faq .faq-hero__mark {
  position: absolute;
  right: -3%;
  bottom: -24%;
  font-family: var(--font-mono);
  font-size: clamp(140px, 26vw, 300px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: rgba(245, 241, 232, .055);
  pointer-events: none;
  -webkit-user-select: none;
  user-select: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  max-width: 18em;
  font-size: var(--fs-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 42em;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--on-dark);
}

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

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line-light);
  border-left: 3px solid var(--grass);
  border-radius: 2px;
  background: rgba(245, 241, 232, .045);
}

.page-faq .faq-stat--signal {
  border-left-color: var(--signal);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--white);
}

.page-faq .faq-stat--signal .faq-stat__num {
  color: var(--signal);
}

.page-faq .faq-stat__label {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--on-dark);
}

/* ---------- 版面骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding-top: 30px;
  padding-bottom: 64px;
}

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

/* ---------- 小节锚点 ---------- */
.page-faq .faq-rail {
  padding: 14px 14px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--white);
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-narrow);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--slate);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-rail__link .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--moss);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(255, 107, 44, .07);
}

.page-faq .faq-rail__link:hover .num,
.page-faq .faq-rail__link:focus-visible .num {
  color: var(--signal);
}

/* ---------- 步骤卡纸 ---------- */
.page-faq .faq-step {
  position: relative;
  margin-bottom: 22px;
  padding: 26px 18px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--white);
  box-shadow: 5px 5px 0 rgba(58, 65, 73, .07);
  scroll-margin-top: 104px;
}

.page-faq .faq-step__num {
  position: absolute;
  top: -13px;
  left: 18px;
  padding: 3px 10px;
  border-radius: 3px;
  background: var(--grass);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .06em;
}

.page-faq .faq-step__title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-h3);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--graphite);
}

.page-faq .faq-step__body {
  display: grid;
  gap: 18px;
}

.page-faq .faq-step__body > p {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.78;
}

.page-faq .faq-step a,
.page-faq .faq-outro a,
.page-faq .faq-q__a a {
  color: var(--clay);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-step a:hover,
.page-faq .faq-outro a:hover,
.page-faq .faq-q__a a:hover {
  color: var(--signal);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-actions {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-act;
}

.page-faq .faq-actions > li {
  position: relative;
  padding: 0 0 16px 32px;
  font-size: var(--fs-body);
  line-height: 1.78;
  counter-increment: faq-act;
}

.page-faq .faq-actions > li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-actions > li::before {
  content: counter(faq-act);
  position: absolute;
  left: 0;
  top: 3px;
  width: 21px;
  height: 21px;
  border: 1px solid var(--moss);
  border-radius: 50%;
  background: var(--white);
  color: var(--grass);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 19px;
  text-align: center;
}

.page-faq .faq-actions > li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 26px;
  bottom: 2px;
  width: 1px;
  background: var(--line);
}

/* ---------- 完成反馈条 ---------- */
.page-faq .faq-after {
  margin: 20px 0 0;
  padding: 11px 14px;
  border-left: 3px solid var(--signal);
  background: rgba(255, 107, 44, .07);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
}

.page-faq .faq-after__label {
  display: inline-block;
  margin-right: 7px;
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--clay);
  vertical-align: 1px;
}

/* ---------- 数据表 ---------- */
.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-card);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 420px;
  border: 1px solid var(--line);
  border-collapse: collapse;
  background: var(--paper);
  font-size: 14px;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.page-faq .faq-table thead th {
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-narrow);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--moss);
  white-space: nowrap;
}

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

.page-faq .faq-table td:first-child {
  font-weight: 700;
  color: var(--graphite);
  white-space: nowrap;
}

.page-faq .faq-table .num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--clay);
}

/* ---------- 签表示意 ---------- */
.page-faq .bracket-line {
  display: flex;
  gap: 8px;
  margin: 4px 0 6px;
}

.page-faq .bracket-line > span {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--moss);
  opacity: .22;
}

.page-faq .bracket-line > span:nth-child(2) { opacity: .42; }
.page-faq .bracket-line > span:nth-child(3) { opacity: .66; }
.page-faq .bracket-line > span:nth-child(4) { opacity: .95; }

.page-faq .bracket-line__cap {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--moss);
}

/* ---------- 收藏三态示意 ---------- */
.page-faq .fav-demo {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .fav-demo__state {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 12px;
  align-items: center;
  padding: 10px 12px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-card);
  background: var(--paper);
}

.page-faq .fav-demo__chip,
.page-faq .fav-demo__badge {
  grid-row: 1 / 3;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--white);
  color: var(--mist);
  font-size: 16px;
  line-height: 1;
}

.page-faq .fav-demo__chip--on {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--white);
}

.page-faq .fav-demo__badge {
  border-color: var(--clay);
  background: rgba(178, 85, 47, .08);
  color: var(--clay);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-faq .fav-demo__name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--graphite);
}

.page-faq .fav-demo__hint {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--slate);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--white);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 2px;
}

.page-faq .faq-figure__cap {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.62;
  color: var(--slate);
}

/* ---------- 常见提问 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.page-faq .faq-q:first-of-type {
  border-top: 1px solid var(--line);
}

.page-faq .faq-q__q {
  position: relative;
  padding: 13px 38px 13px 14px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--graphite);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-q__q::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--moss);
}

.page-faq .faq-q__q:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}

.page-faq .faq-q[open] .faq-q__q {
  color: var(--clay);
}

.page-faq .faq-q[open] .faq-q__q::after {
  content: "−";
  color: var(--signal);
}

.page-faq .faq-q__a {
  margin: 0;
  padding: 0 14px 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-outro {
  margin-top: 4px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--grass);
  border-radius: var(--radius-card);
  background: var(--white);
}

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

/* ---------- 桌面端点：左内容 + 右锚点 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
    gap: 34px;
    padding-top: 44px;
    padding-bottom: 84px;
  }

  .page-faq .faq-rail {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 3px;
  }

  .page-faq .faq-rail__link {
    display: flex;
    justify-content: flex-start;
    padding: 7px 8px;
    border-color: transparent;
    border-left: 2px solid transparent;
    border-radius: 3px;
  }

  .page-faq .faq-flow {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }

  .page-faq .faq-step {
    padding: 30px 26px 22px;
  }

  .page-faq .faq-step__num {
    left: 26px;
  }

  .page-faq .faq-step__body--split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 26px;
    align-items: start;
  }

  .page-faq .faq-step__body--split.faq-step__body--flip {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  }

  .page-faq .faq-step__body--split.faq-step__body--flip > .faq-step__main {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-step__body--split.faq-step__body--flip > .faq-step__side {
    grid-column: 1;
    grid-row: 1;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-step {
    padding: 34px 34px 24px;
  }

  .page-faq .faq-step__num {
    left: 34px;
  }

  .page-faq .faq-step__title {
    margin-bottom: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-q__q {
    transition: none;
  }
}