.page-faq {
  --faq-gap: clamp(28px, 4vw, 56px);
  --faq-pad: clamp(36px, 6vw, 76px);
  --faq-rail-w: 232px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: var(--sp-3);
}

.page-faq .crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--c-dim);
}

.page-faq .crumb a {
  color: var(--c-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .crumb a:hover {
  color: var(--c-mint);
  border-bottom-color: var(--c-mint);
}

.page-faq .crumb__sep {
  color: var(--c-line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 4vw, 48px) 0 var(--faq-pad);
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(23, 64, 58, .55) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(23, 64, 58, .35) 0 1px, transparent 1px 88px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 85%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 85%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

.page-faq .faq-kicker {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--c-mint);
}

.page-faq .faq-title {
  margin: 0 0 var(--sp-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-56);
  line-height: 1.04;
  letter-spacing: -.015em;
  color: var(--c-ink);
}

.page-faq .faq-lede {
  margin: 0 0 var(--sp-4);
  max-width: 38em;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--c-dim);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-5);
  padding-top: var(--sp-3);
  border-top: 1px dashed var(--c-line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-20);
  color: var(--c-fire);
  letter-spacing: -.02em;
}

.page-faq .faq-stat__label {
  font-size: var(--fs-12);
  color: var(--c-dim);
  letter-spacing: .04em;
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  border: 1px solid var(--c-line);
  background: var(--c-glass);
}

.page-faq .media-frame__caption {
  margin-top: 10px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--c-dim);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.15fr .95fr;
    align-items: end;
    gap: var(--sp-5);
  }
}

/* ---------- 两栏布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding: var(--faq-pad) 0 calc(var(--faq-pad) + var(--sp-4));
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 72px);
  }
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-rail {
  position: static;
}

.page-faq .faq-rail .rail__title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--c-dim);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--sp-1);
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding-bottom: var(--sp-1);
}

.page-faq .faq-rail__list > li {
  flex: none;
  scroll-snap-align: start;
}

.page-faq .rail__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  white-space: nowrap;
  padding: 10px 14px;
  font-size: var(--fs-14);
  line-height: 1.4;
  color: var(--c-dim);
  text-decoration: none;
  background: var(--c-glass);
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-line);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-faq .rail__link:hover {
  color: var(--c-ink);
  border-color: var(--c-mint2);
  background: var(--c-glass-2);
}

.page-faq .rail__link.is-active {
  color: var(--c-mint);
  border-color: var(--c-mint);
  border-left-color: var(--c-mint);
}

.page-faq .rail__num {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-mint2);
}

.page-faq .rail__link.is-active .rail__num {
  color: var(--c-mist);
}

@media (min-width: 900px) {
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--head-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: 0;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list > li {
    width: 100%;
  }

  .page-faq .rail__link {
    flex-direction: row;
    align-items: baseline;
    gap: 10px;
    padding: 10px 0 10px 14px;
    background: none;
    border: 0;
    border-left: 2px solid var(--c-line);
    white-space: normal;
  }

  .page-faq .rail__link:hover,
  .page-faq .rail__link.is-active {
    background: none;
  }

  .page-faq .rail__num {
    flex: none;
    width: 20px;
  }
}

/* ---------- 内容流 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-block {
  padding-bottom: clamp(32px, 4.5vw, 56px);
  margin-bottom: clamp(32px, 4.5vw, 56px);
  border-bottom: 1px solid var(--c-line);
  scroll-margin-top: calc(var(--head-h) + 28px);
}

.page-faq .faq-block:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .section-head {
  margin-bottom: var(--sp-3);
}

.page-faq .section-index {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--c-mint);
}

.page-faq .section-title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-28);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--c-ink);
}

.page-faq .section-lede {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-dim);
}

/* ---------- 编号步骤 ---------- */
.page-faq .steps {
  counter-reset: step;
  list-style: none;
  margin: 0 0 var(--sp-2);
  padding: 0;
}

.page-faq .steps > li {
  position: relative;
  counter-increment: step;
  padding: 16px 0 16px 52px;
  border-top: 1px solid var(--c-line);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-ink);
  transition: background var(--t-fast);
}

.page-faq .steps > li:last-child {
  border-bottom: 1px solid var(--c-line);
}

.page-faq .steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .02em;
  color: var(--c-mint);
  background: var(--c-deep);
  border: 1px solid var(--c-line);
  border-radius: 50%;
  z-index: 1;
}

.page-faq .steps > li::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 42px;
  bottom: -1px;
  width: 1px;
  background: var(--c-line);
}

.page-faq .steps > li:last-child::after {
  display: none;
}

.page-faq .steps > li:hover {
  background: var(--c-glass);
}

.page-faq .steps > li.is-warn {
  background: linear-gradient(90deg, rgba(255, 91, 46, .1), transparent 62%);
}

.page-faq .steps > li.is-warn::before {
  color: var(--c-fire);
  border-color: rgba(255, 91, 46, .55);
}

.page-faq .steps a {
  color: var(--c-mint);
  text-decoration: none;
  border-bottom: 1px solid var(--c-mint2);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .steps a:hover {
  color: var(--c-mist);
  border-bottom-color: var(--c-mist);
}

.page-faq .path {
  font-family: var(--font-data);
  font-size: .9em;
  color: var(--c-mist);
  background: var(--c-glass);
  border: 1px solid var(--c-line);
  padding: 1px 6px;
  white-space: nowrap;
}

.page-faq .step-note {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  margin-top: 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--c-dim);
  border-left: 2px solid var(--c-line);
  padding-left: 0;
  transition: max-height var(--t-med), opacity var(--t-med), margin-top var(--t-med), padding-left var(--t-med);
}

.page-faq .steps > li:hover .step-note,
.page-faq .steps > li:focus-within .step-note {
  max-height: 6em;
  opacity: 1;
  margin-top: 8px;
  padding-left: 12px;
}

@media (hover: none) {
  .page-faq .step-note {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
    padding-left: 12px;
  }
}

@media (max-width: 620px) {
  .page-faq .path {
    white-space: normal;
    word-break: break-word;
  }
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-details {
  margin-top: var(--sp-2);
  background: var(--c-glass);
  border: 1px solid var(--c-line);
  transition: border-color var(--t-fast);
}

.page-faq .faq-details[open] {
  border-color: var(--c-mint2);
}

.page-faq .faq-details > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: var(--fs-14);
  color: var(--c-ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-details > summary::before {
  content: "+";
  flex: none;
  width: 14px;
  font-family: var(--font-data);
  font-size: var(--fs-16);
  line-height: 1;
  color: var(--c-mint);
}

.page-faq .faq-details[open] > summary::before {
  content: "\2013";
}

.page-faq .faq-details__body {
  padding: 0 16px 16px 40px;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-dim);
}

/* ---------- 自检清单 ---------- */
.page-faq .check-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

.page-faq .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .check-list > li {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 14px;
  align-items: start;
  padding: 12px 0;
  border-bottom: 1px solid var(--c-line);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--c-ink);
}

.page-faq .check-list > li::before {
  content: "";
  width: 16px;
  height: 16px;
  margin-top: 5px;
  border: 1px solid var(--c-mint2);
  background: var(--c-glass);
}

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

.page-faq .check-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  border: 1px solid var(--c-line);
  background: var(--c-glass);
}

@media (min-width: 780px) {
  .page-faq .check-layout {
    grid-template-columns: 1.3fr .85fr;
    align-items: start;
    gap: var(--sp-5);
  }
}

/* ---------- 人工协助 ---------- */
.page-faq .help-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.page-faq .help-card {
  padding: var(--sp-3);
  background: var(--c-deep);
  border: 1px solid var(--c-line);
  transition: border-color var(--t-fast), transform var(--t-fast);
}

.page-faq .help-card:hover {
  border-color: var(--c-mint2);
}

.page-faq .help-card__title {
  margin: 4px 0 6px;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  letter-spacing: -.01em;
  color: var(--c-ink);
}

.page-faq .card__label {
  margin: 0;
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--c-mint2);
}

.page-faq .card__note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--c-dim);
}

@media (min-width: 700px) {
  .page-faq .help-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .assist-ways {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  margin-bottom: var(--sp-3);
}

.page-faq .assist-way {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--c-line);
}

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

.page-faq .assist-way__key {
  flex: none;
  width: 84px;
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--c-dim);
}

.page-faq .assist-way__val {
  font-family: var(--font-data);
  font-size: var(--fs-14);
  color: var(--c-mint);
  word-break: break-word;
}

@media (min-width: 700px) {
  .page-faq .assist-ways {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .assist-way {
    border-bottom: 0;
    border-right: 1px dashed var(--c-line);
    padding: 14px 16px;
  }

  .page-faq .assist-way:first-child {
    padding-left: 0;
  }

  .page-faq .assist-way:last-child {
    border-right: 0;
  }
}

.page-faq .assist-note {
  margin: 0 0 var(--sp-3);
  max-width: 42em;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-dim);
}

.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}