.page-faq {
  --faq-panel: var(--ink-800);
  display: block;
  background: var(--ink-900);
  color: var(--bone);
  font-family: var(--font-body);
  overflow-x: hidden;
  padding-bottom: 8px;
}

.page-faq .crumbs {
  padding: 18px 0 0;
}

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

.page-faq .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  margin-left: 8px;
  color: var(--line);
}

.page-faq .crumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 30px 0 48px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(59, 232, 200, 0) 68%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.04;
  font-size: clamp(32px, 6.6vw, 66px);
  color: var(--bone);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-stats {
  border: 1px solid var(--line);
  background: var(--faq-panel);
}

.page-faq .faq-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-stats__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-stats__k {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .faq-stats__v {
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.page-faq .faq-stats__row:nth-child(3) .faq-stats__v {
  color: var(--orange);
}

/* ---------- 目录 + 正文 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 10px;
  padding-top: 32px;
}

.page-faq .faq-toc {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-faq .faq-toc__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-toc__list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__list a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-toc__list a.is-on {
  color: var(--bone);
}

.page-faq .faq-toc__list a.is-on .faq-toc__idx {
  color: var(--orange);
}

.page-faq .faq-toc__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--moss);
}

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

.page-faq .faq-section {
  scroll-margin-top: calc(var(--frame-h) + 20px);
  padding: 34px 0 48px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-section:first-child {
  border-top: 0;
}

.page-faq .sec-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
}

.page-faq .sec-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-faq .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.18;
  font-size: clamp(23px, 3.4vw, 34px);
  color: var(--bone);
}

.page-faq .sec-lede {
  margin: 0 0 24px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 三步走 ---------- */
.page-faq .steps {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .step {
  background: var(--faq-panel);
  padding: 22px 18px 24px;
}

.page-faq .step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-faq .step:nth-child(2) .step__num {
  background: var(--orange);
}

.page-faq .step:nth-child(3) .step__num {
  background: var(--moss);
}

.page-faq .step__title {
  margin: 16px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  font-size: 19px;
  line-height: 1.35;
  color: var(--bone);
}

.page-faq .step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa-group {
  border-top: 1px solid var(--line);
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  font-size: 17px;
  line-height: 1.45;
  color: var(--bone);
  transition: color .2s var(--ease);
}

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

.page-faq .qa__q:hover .qa__qtext,
.page-faq .qa__q:focus-visible .qa__qtext {
  color: var(--cyan);
}

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

.page-faq .qa__idx {
  flex: 0 0 auto;
  width: 20px;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--moss);
}

.page-faq .qa__qtext {
  flex: 1 1 auto;
  transition: color .2s var(--ease);
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  margin-left: 10px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .25s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  padding: 0 2px 18px 34px;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 图文分栏 ---------- */
.page-faq .split {
  display: grid;
  gap: 26px;
}

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

.page-faq .media {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--faq-panel);
}

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

.page-faq .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
}

/* ---------- 速查表 ---------- */
.page-faq .lookup {
  border: 1px solid var(--line);
  background: var(--faq-panel);
}

.page-faq .lookup__head {
  display: none;
}

.page-faq .lookup__row {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}

.page-faq .lookup__row:last-child {
  border-bottom: 0;
}

.page-faq .lookup__row:hover {
  background: var(--ink-700);
}

.page-faq .lookup__q {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.55;
  color: var(--bone);
}

.page-faq .lookup__a {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 自查清单 ---------- */
.page-faq .checklist {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .checklist li {
  position: relative;
  background: var(--faq-panel);
  padding: 16px 18px 16px 48px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .checklist li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 19px;
  width: 12px;
  height: 12px;
  border: 1px solid var(--cyan);
}

.page-faq .faq-cta {
  display: grid;
  gap: 16px;
  margin-top: 26px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--faq-panel);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 底部继续了解 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 1px;
  margin: 8px 0 64px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-next__item {
  display: block;
  padding: 22px 20px;
  background: var(--faq-panel);
  color: var(--bone);
  text-decoration: none;
  transition: background .2s var(--ease);
}

.page-faq .faq-next__item:hover,
.page-faq .faq-next__item:focus-visible {
  background: var(--ink-700);
}

.page-faq .faq-next__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-next__title {
  display: block;
  margin-top: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  font-size: 19px;
  line-height: 1.35;
}

.page-faq .faq-next__desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 40px 0 56px;
  }

  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .step {
    padding: 26px 22px 28px;
  }

  .page-faq .lookup__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
    gap: 28px;
    padding: 12px 20px;
    background: var(--ink-700);
    border-bottom: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--moss);
  }

  .page-faq .lookup__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
    gap: 28px;
    align-items: baseline;
    padding: 15px 20px;
  }

  .page-faq .faq-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
    padding: 24px 26px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(288px, .85fr);
    gap: 56px;
    align-items: end;
  }

  .page-faq .split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .split--reverse .split__text {
    order: 1;
  }

  .page-faq .split--reverse .split__figure {
    order: 2;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 60px;
    padding-top: 44px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--frame-h) + 20px);
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa__qtext,
  .page-faq .lookup__row,
  .page-faq .faq-next__item,
  .page-faq .crumbs a,
  .page-faq .faq-toc__list a {
    transition: none;
  }
}