.page-faq {
  --faq-panel: #16100F;
  --faq-gold-soft: rgba(201, 162, 39, .12);
  --faq-dim: rgba(199, 203, 209, .05);
  background: var(--ink);
  color: var(--silver);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after { box-sizing: border-box; }

.page-faq img { max-width: 100%; height: auto; }

.page-faq .faq-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line-strong);
  background: var(--ink-soft);
}

.page-faq .faq-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
  filter: saturate(.68) contrast(1.06);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(96deg, rgba(11, 11, 13, .96) 0%, rgba(11, 11, 13, .84) 46%, rgba(140, 17, 32, .58) 100%);
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 26px 20px 46px;
}

.page-faq .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .crumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--gold-line);
}

.page-faq .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--gold-lt);
  border-bottom-color: var(--gold-line);
}

.page-faq .crumbs [aria-current="page"] { color: var(--silver); }

.page-faq .kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(30px, 7.4vw, 52px);
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 36em;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-hero-card {
  position: relative;
  align-self: start;
  padding: 20px 18px 22px 22px;
  border: 2px solid var(--line-strong);
  border-left: 4px solid var(--gold);
  background: linear-gradient(180deg, rgba(22, 16, 15, .96), rgba(11, 11, 13, .94));
  box-shadow: var(--shadow-lg);
}

.page-faq .faq-card-tag {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--gold-lt);
}

.page-faq .faq-card-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .faq-card-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
  font-size: 15px;
  line-height: 1.65;
  color: var(--silver);
}

.page-faq .faq-card-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
  padding-top: 3px;
}

/* ---------- 现象索引条 ---------- */

.page-faq .faq-indexbar {
  background: var(--archive);
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-index-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px 20px;
}

.page-faq .faq-index-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold-lt);
  white-space: nowrap;
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 6px 11px;
  border: 1px solid var(--line-strong);
  background: var(--faq-dim);
  color: var(--silver);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-chip:hover {
  color: var(--gold-lt);
  border-color: var(--gold);
  background: var(--faq-gold-soft);
}

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

/* ---------- 章节头 ---------- */

.page-faq .faq-sec {
  padding: 44px 0 4px;
}

.page-faq .faq-head {
  position: relative;
  display: grid;
  gap: 6px;
  margin: 0 0 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .faq-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 68px;
  height: 2px;
  background: var(--gold);
}

.page-faq .sec-index {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-faq .sec-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(22px, 5.2vw, 32px);
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .sec-note {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 折叠条目 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-fold {
  border: 2px solid var(--line-strong);
  border-left: 4px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(22, 16, 15, .96), rgba(11, 11, 13, .96));
  box-shadow: var(--shadow-sm);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .faq-fold[data-open] {
  border-color: var(--gold-line);
  border-left-color: var(--gold);
  box-shadow: var(--shadow-lg);
}

.page-faq .faq-fold-h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

.page-faq .faq-fold .fold-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 16px 16px 16px 14px;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: background-color .18s var(--ease);
}

.page-faq .faq-fold .fold-head:hover { background: var(--faq-gold-soft); }

.page-faq .faq-fold .fold-head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-fold .fold-num {
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: .08em;
  color: var(--gold);
  white-space: nowrap;
}

.page-faq .faq-fold-q { display: block; }

.page-faq .faq-fold .fold-mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--line-strong);
  background: rgba(199, 203, 209, .06);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-fold .fold-mark::before,
.page-faq .faq-fold .fold-mark::after {
  content: "";
  position: absolute;
  background: var(--gold-lt);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-fold .fold-mark::before {
  left: 4px;
  right: 4px;
  top: 50%;
  height: 2px;
  margin-top: -1px;
}

.page-faq .faq-fold .fold-mark::after {
  top: 4px;
  bottom: 4px;
  left: 50%;
  width: 2px;
  margin-left: -1px;
}

.page-faq .faq-fold[data-open] .fold-mark {
  border-color: var(--gold);
  background: var(--faq-gold-soft);
}

.page-faq .faq-fold[data-open] .fold-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-fold .fold-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .26s var(--ease);
}

.page-faq .faq-fold[data-open] .fold-body { max-height: 1600px; }

.page-faq .faq-fold-inner {
  position: relative;
  padding: 2px 18px 20px 44px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-fold-inner::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold-line), rgba(201, 162, 39, 0));
}

.page-faq .faq-row {
  display: grid;
  gap: 4px;
  padding-top: 14px;
}

.page-faq .faq-row-key {
  display: inline-block;
  padding-left: 8px;
  border-left: 2px solid var(--gold);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--gold-lt);
}

.page-faq .faq-row-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-steps {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 30px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-steps li::before {
  content: counter(faq-step);
  position: absolute;
  left: 0;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gold);
  color: #1B1206;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 20px;
  text-align: center;
}

.page-faq .faq-fold-inner a {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-line);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-fold-inner a:hover,
.page-faq .faq-fold-inner a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  position: relative;
  margin: 0 0 24px;
  border: 2px solid var(--line-strong);
  background: var(--faq-panel);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.8);
}

.page-faq .faq-figure .media-cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 8px 14px;
  background: rgba(11, 11, 13, .88);
  border-top: 1px solid var(--gold-line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--silver);
}

/* ---------- 收尾两栏 ---------- */

.page-faq .faq-outro { padding-bottom: 56px; }

.page-faq .faq-two {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-two-col {
  position: relative;
  padding: 22px 18px 24px;
  border: 2px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(22, 16, 15, .94), rgba(11, 11, 13, .94));
}

.page-faq .faq-two-self {
  border-left: 4px solid var(--line-strong);
  background: var(--paper);
  color: #23262B;
}

.page-faq .faq-two-human {
  border-left: 4px solid var(--eagle);
  box-shadow: var(--shadow-lg);
}

.page-faq .faq-two-title {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-two-self .faq-two-title { color: #1B1206; }

.page-faq .faq-two-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-two-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15.5px;
  line-height: 1.72;
}

.page-faq .faq-two-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  background: var(--gold);
}

.page-faq .faq-two-self .faq-two-list li { color: #3A3F47; }
.page-faq .faq-two-self .faq-two-list li::before { background: var(--crimson); }
.page-faq .faq-two-human .faq-two-list li { color: var(--silver); }

.page-faq .faq-two-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 数据时点 ---------- */

.page-faq .faq-stamp {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-top: 22px;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--gold-line);
  background: var(--archive);
}

.page-faq .faq-stamp-key {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-stamp-val {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--gold-lt);
  border-bottom: 1px solid var(--gold-line);
}

.page-faq .faq-stamp-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 桌面增强 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-shell { padding: 0 28px; }
  .page-faq .faq-hero-inner { padding: 32px 28px 60px; gap: 30px; }
  .page-faq .faq-index-inner { padding: 16px 28px; }
  .page-faq .faq-sec { padding-top: 58px; }
  .page-faq .faq-list { gap: 14px; }
  .page-faq .faq-fold-inner { padding: 4px 26px 26px 56px; }
  .page-faq .faq-fold .fold-head { padding: 19px 20px 19px 18px; font-size: 17.5px; }
  .page-faq .faq-two { gap: 18px; }
  .page-faq .faq-two-col { padding: 26px 24px 30px; }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
    column-gap: 44px;
    padding-bottom: 72px;
  }
  .page-faq .faq-hero-inner .crumbs { grid-column: 1 / -1; }
  .page-faq .faq-hero-card { margin-bottom: 6px; }
  .page-faq .faq-two { grid-template-columns: 1fr 1fr; }
  .page-faq .faq-figure { max-width: 880px; }
}

@media (min-width: 1180px) {
  .page-faq .faq-fold-inner { padding-right: 60px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-fold .fold-body,
  .page-faq .faq-fold .fold-mark::before,
  .page-faq .faq-fold .fold-mark::after,
  .page-faq .faq-chip,
  .page-faq .faq-fold .fold-head {
    transition: none;
  }
}