.page-faq {
  --faq-hair: rgba(255, 255, 255, 0.12);
  --faq-hair-soft: rgba(255, 255, 255, 0.07);
  --faq-gold-soft: rgba(245, 166, 38, 0.12);
  display: block;
  background: var(--navy);
  color: var(--on-dark-strong);
}

.page-faq .faq-crumbs {
  padding-top: 24px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 8px 0 56px;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
  min-width: 0;
}

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

.page-faq .faq-hero__eyebrow {
  color: var(--gold);
  margin: 0;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--on-dark-strong);
  margin: 12px 0 16px;
}

.page-faq .faq-hero__lead {
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--on-dark);
  margin: 0 0 24px;
  max-width: 48ch;
}

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

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--navy-mid);
  min-width: 0;
}

.page-faq .faq-hero__figure::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ---------- 区块通用 ---------- */
.page-faq .faq-section {
  padding: 44px 0;
}

.page-faq .faq-section__head {
  margin-bottom: 28px;
}

.page-faq .faq-section__head .label-mono {
  color: var(--gold);
  margin: 0;
}

.page-faq .faq-section__head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-28);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--on-dark-strong);
  margin: 10px 0 0;
}

.page-faq .faq-section__sub {
  margin: 10px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--on-dark);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .step-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-faq .step-track__item {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  min-width: 0;
}

.page-faq .step-track__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--navy);
  background: var(--gold);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
}

.page-faq .step-track__title {
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 900;
  line-height: 1.4;
  color: var(--on-dark-strong);
  margin: 14px 0 8px;
}

.page-faq .step-track__item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--on-dark);
}

/* ---------- 问答布局 ---------- */
.page-faq .faq-qa__layout {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
  min-width: 0;
}

.page-faq .faq-toc {
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  padding: 18px 16px;
  min-width: 0;
}

.page-faq .faq-toc__label {
  margin: 0 0 12px;
  color: var(--lime);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__link {
  display: block;
  padding: 8px 10px 8px 14px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: var(--fs-14);
  line-height: 1.5;
  color: var(--on-dark);
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--on-dark-strong);
  border-left-color: var(--gold);
  background: var(--faq-gold-soft);
}

.page-faq .faq-qa__flow {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 900;
  line-height: 1.4;
  color: var(--on-dark-strong);
  margin: 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-group__title::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-faq .faq-group__sub {
  margin: 12px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--on-dark);
}

.page-faq .faq-group__head--with-media {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  align-items: start;
}

.page-faq .faq-group__media {
  margin: 0;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--navy-mid);
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  margin-top: 12px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  scroll-margin-top: 96px;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(245, 166, 38, 0.55);
  background: rgba(245, 166, 38, 0.05);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.6;
  color: var(--on-dark-strong);
}

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

.page-faq .qa__q::after {
  content: "";
  flex: none;
  margin-left: auto;
  margin-top: 9px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  transition: transform 220ms var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(225deg);
}

.page-faq .qa__a {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--faq-hair);
}

.page-faq .qa__a p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--on-dark);
}

.page-faq .qa__a p + p {
  margin-top: 10px;
}

.page-faq .qa__key {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  background: var(--faq-gold-soft);
  color: var(--gold);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* ---------- 纠错与反馈 ---------- */
.page-faq .faq-fix {
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-fix__inner {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
  min-width: 0;
}

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

.page-faq .faq-fix__lead {
  margin: 0 0 20px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--on-dark);
}

.page-faq .faq-fix__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-fix__list li {
  position: relative;
  padding-left: 22px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--on-dark);
}

.page-faq .faq-fix__list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 11px;
  width: 10px;
  height: 2px;
  background: var(--lime);
}

.page-faq .faq-fix__note {
  margin: 0 0 24px;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--on-dark);
}

.page-faq .faq-fix__panel {
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(138, 107, 255, 0.16), rgba(53, 240, 166, 0.07));
  padding: 22px 20px;
  min-width: 0;
}

.page-faq .faq-fix__panel-label {
  margin: 0 0 12px;
  color: var(--violet);
}

.page-faq .faq-fix__panel-text {
  margin: 0 0 20px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--on-dark);
}

.page-faq .faq-fix__facts {
  margin: 0;
  display: grid;
  gap: 14px;
}

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

.page-faq .faq-fix__fact dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--on-dark);
  margin-bottom: 4px;
}

.page-faq .faq-fix__fact dd {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--on-dark-strong);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .step-track {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-faq .step-track__item:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 48px;
    right: -24px;
    width: 24px;
    height: 1px;
    background: linear-gradient(90deg, var(--gold), rgba(245, 166, 38, 0));
  }

  .page-faq .faq-group__head--with-media {
    grid-template-columns: 1fr 168px;
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 24px 0 72px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: center;
  }

  .page-faq .faq-hero__title {
    font-size: var(--fs-56);
  }

  .page-faq .faq-section {
    padding: 72px 0;
  }

  .page-faq .faq-section__head {
    margin-bottom: 40px;
  }

  .page-faq .faq-fix__inner {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
    align-items: start;
  }

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

@media (min-width: 1000px) {
  .page-faq .faq-qa__layout {
    grid-template-columns: 268px 1fr;
    gap: 56px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
    align-self: start;
    max-height: calc(100vh - 128px);
    overflow-y: auto;
  }

  .page-faq .faq-qa__flow {
    gap: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q::after,
  .page-faq .faq-toc__link {
    transition: none;
  }
}