.page-faq {
  background: var(--paper-000);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: 24px;
}
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--gray-500);
}
.page-faq .breadcrumb__item {
  color: var(--gray-500);
}
.page-faq .breadcrumb a.breadcrumb__item {
  color: var(--jade-600);
  text-decoration: none;
}
.page-faq .breadcrumb a.breadcrumb__item:hover {
  text-decoration: underline;
}
.page-faq .breadcrumb__sep {
  color: var(--line-200);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: 30px 46px;
  border-bottom: 1px solid var(--line-200);
}
.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--jade-600);
}
.page-faq .faq-hero__kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--jade-600);
}
.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.page-faq .faq-hero__lede {
  margin: 0 0 34px;
  max-width: 42ch;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--ink-700);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  background: var(--line-200);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.page-faq .faq-stats > li {
  background: var(--paper-000);
  padding: 18px 18px 20px;
}
.page-faq .faq-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-24);
  font-variant-numeric: tabular-nums;
  color: var(--ink-900);
  line-height: 1.15;
}
.page-faq .faq-stats > li:first-child .faq-stats__num {
  color: var(--gold-500);
}
.page-faq .faq-stats__label {
  display: block;
  margin-top: 8px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--gray-500);
}

/* ---------- 分屏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-block: 44px 88px;
}
.page-faq .faq-rail {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}
.page-faq .faq-rail__label {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-200);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--gray-500);
}
.page-faq .faq-rail__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}
.page-faq .faq-rail__nav::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 15px;
  border: 1px solid var(--line-200);
  border-radius: var(--radius-s);
  background: var(--paper-000);
  color: var(--ink-700);
  font-size: var(--fs-14);
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: transform .18s var(--ease), background .18s var(--ease),
              border-color .18s var(--ease), color .18s var(--ease);
}
.page-faq .faq-tab:hover {
  transform: translateY(-2px);
  border-color: var(--jade-400);
  background: var(--mist-050);
}
.page-faq .faq-tab__num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-variant-numeric: tabular-nums;
  color: var(--gray-500);
}
.page-faq .faq-tab.is-active {
  background: var(--ink-900);
  border-color: var(--orange-500);
  box-shadow: inset 3px 0 0 var(--orange-500), var(--shadow-m);
  color: var(--paper-000);
}
.page-faq .faq-tab.is-active .faq-tab__num {
  color: var(--orange-500);
}
.page-faq .faq-rail__note {
  margin: 0;
  padding: 13px 16px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--gray-500);
  background: var(--mist-050);
  border-left: 3px solid var(--jade-400);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
}
.page-faq .faq-rail__note a {
  color: var(--jade-600);
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 122, 108, .35);
}
.page-faq .faq-rail__note a:hover {
  border-bottom-color: var(--jade-600);
}

/* ---------- 内容流 ---------- */
.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: 68px;
  min-width: 0;
}
.page-faq .faq-stream > section {
  scroll-margin-top: 40px;
}
.page-faq .faq-section__index {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--jade-600);
}
.page-faq .faq-section__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 33px);
  line-height: 1.3;
  color: var(--ink-900);
}
.page-faq .faq-section__lead {
  margin: 0 0 30px;
  max-width: 44ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ink-700);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure,
.page-faq .faq-steps__media {
  margin: 0;
}
.page-faq .faq-figure {
  margin-bottom: 30px;
}
.page-faq .faq-figure img,
.page-faq .faq-steps__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  object-fit: cover;
  box-shadow: var(--shadow-s);
}
.page-faq .faq-figure figcaption,
.page-faq .faq-steps__media figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--gray-500);
}

/* ---------- 四栏卡片 ---------- */
.page-faq .faq-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-columns > li {
  position: relative;
  padding: 20px 22px 22px 26px;
  background: var(--paper-000);
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-s);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}
.page-faq .faq-columns > li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-m);
}
.page-faq .faq-columns > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--jade-400);
}
.page-faq .faq-columns > li.is-focus {
  background: var(--gold-100);
  border-color: var(--gold-500);
}
.page-faq .faq-columns > li.is-focus::before {
  background: var(--orange-500);
}
.page-faq .faq-columns__rank {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--gray-500);
}
.page-faq .faq-columns > li.is-focus .faq-columns__rank {
  color: var(--gold-500);
}
.page-faq .faq-columns__name {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink-900);
}
.page-faq .faq-columns__desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--gray-500);
}
.page-faq .faq-columns > li.is-focus .faq-columns__desc {
  color: var(--ink-700);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}
.page-faq .faq-step-list {
  position: relative;
  margin: 0;
  padding: 0 0 0 46px;
  list-style: none;
}
.page-faq .faq-step-list__spine {
  position: absolute;
  left: 0;
  top: 22px;
  width: 40px;
  height: calc(100% - 44px);
  color: var(--jade-400);
  opacity: .55;
  pointer-events: none;
}
.page-faq .faq-step {
  position: relative;
  padding-bottom: 26px;
}
.page-faq .faq-step:last-child {
  padding-bottom: 0;
}
.page-faq .faq-step__dot {
  position: absolute;
  left: -46px;
  top: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--jade-600);
  border-radius: 9px 9px 9px 0;
  background: var(--paper-000);
  color: var(--jade-600);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  transition: transform .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}
.page-faq .faq-step:hover .faq-step__dot,
.page-faq .faq-step:focus-within .faq-step__dot {
  transform: translateY(-4px);
  background: var(--jade-600);
  color: var(--paper-000);
}
.page-faq .faq-step__title {
  margin: 2px 0 8px;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 800;
  line-height: 1.45;
  color: var(--ink-900);
}
.page-faq .faq-step__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--ink-700);
}
.page-faq .faq-step__hint {
  display: block;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--jade-600);
  transition: max-height .24s var(--ease), opacity .24s var(--ease), margin-top .24s var(--ease);
}
.page-faq .faq-step:hover .faq-step__hint,
.page-faq .faq-step:focus-within .faq-step__hint {
  max-height: 70px;
  margin-top: 9px;
  opacity: 1;
}
.page-faq .faq-steps__media img {
  max-width: 240px;
  margin-inline: auto;
  box-shadow: var(--shadow-m);
}
.page-faq .faq-steps__media figcaption {
  max-width: 240px;
  margin-inline: auto;
  text-align: center;
}

.page-faq .faq-stat-line {
  margin: 34px 0 0;
  padding: 20px 22px;
  background: var(--ink-900);
  border-radius: var(--radius-m);
  color: var(--paper-000);
  font-size: var(--fs-16);
  line-height: 1.8;
}
.page-faq .faq-stat-line__num {
  font-family: var(--font-mono);
  font-size: 1.5em;
  font-variant-numeric: tabular-nums;
  color: var(--gold-500);
  margin-right: 2px;
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-acc {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-faq .faq-acc details {
  border: 1px solid var(--line-200);
  border-radius: var(--radius-s);
  background: var(--paper-000);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.page-faq .faq-acc details:hover {
  border-color: var(--jade-400);
}
.page-faq .faq-acc details[open] {
  border-color: var(--jade-400);
  box-shadow: var(--shadow-s);
}
.page-faq .faq-acc summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-16);
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink-900);
  transition: color .18s var(--ease);
}
.page-faq .faq-acc summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-acc summary::after {
  content: "";
  flex: 0 0 auto;
  margin-left: auto;
  margin-top: 8px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--jade-600);
  border-bottom: 2px solid var(--jade-600);
  transform: rotate(45deg);
  transition: transform .2s var(--ease);
}
.page-faq .faq-acc details[open] summary::after {
  transform: rotate(225deg);
  margin-top: 12px;
}
.page-faq .faq-acc details[open] summary {
  color: var(--jade-600);
}
.page-faq .faq-acc__no {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-variant-numeric: tabular-nums;
  color: var(--gold-500);
}
.page-faq .faq-acc__q {
  flex: 1 1 auto;
  min-width: 0;
}
.page-faq .faq-acc__a {
  padding: 0 18px 18px 54px;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--ink-700);
}
.page-faq .faq-acc__a p {
  margin: 0 0 8px;
}
.page-faq .faq-acc__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-acc__a a {
  color: var(--jade-600);
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 122, 108, .4);
}
.page-faq .faq-acc__a a:hover {
  border-bottom-color: var(--jade-600);
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-prep {
  counter-reset: prep;
  display: grid;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.page-faq .faq-prep li {
  position: relative;
  counter-increment: prep;
  padding: 13px 18px 13px 48px;
  background: var(--mist-050);
  border-radius: var(--radius-s);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ink-700);
}
.page-faq .faq-prep li::before {
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--jade-600);
}
.page-faq .callout--jade {
  font-size: var(--fs-14);
  line-height: 1.85;
}
.page-faq .callout--jade p {
  margin: 0;
}
.page-faq .callout--jade a {
  color: var(--jade-600);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 122, 108, .4);
}

.page-faq .faq-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 34px;
}
.page-faq .faq-next a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 22px 22px;
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  background: var(--paper-000);
  box-shadow: var(--shadow-s);
  color: inherit;
  text-decoration: none;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .faq-next a:hover {
  transform: translateY(-4px);
  border-color: var(--jade-400);
  box-shadow: var(--shadow-m);
}
.page-faq .faq-next__kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--gold-500);
}
.page-faq .faq-next__title {
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 800;
  line-height: 1.45;
  color: var(--ink-900);
}
.page-faq .faq-next__note {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--gray-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
  .page-faq .faq-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 44px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 56px;
    padding-block: 52px 104px;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 28px;
    align-self: start;
  }
  .page-faq .faq-rail__nav {
    flex-direction: column;
    gap: 5px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-tab {
    white-space: normal;
    padding: 11px 15px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-columns {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .faq-columns > li,
  .page-faq .faq-step__dot,
  .page-faq .faq-step__hint,
  .page-faq .faq-next a,
  .page-faq .faq-acc summary::after {
    transition: none;
  }
  .page-faq .faq-tab:hover,
  .page-faq .faq-columns > li:hover,
  .page-faq .faq-step:hover .faq-step__dot,
  .page-faq .faq-next a:hover {
    transform: none;
  }
}
<<<END>>>