.page-faq {
  --faq-rule: rgba(143, 163, 200, 0.18);
  --faq-panel: rgba(21, 32, 72, 0.72);
  --faq-panel-deep: rgba(14, 23, 56, 0.86);
  --faq-cut: 16px;
  background: var(--xp-void);
  color: var(--xp-porcelain);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--xp-gutter) * 1.9) 0 calc(var(--xp-gutter) * 2.2);
  background:
    radial-gradient(115% 85% at 88% 2%, rgba(53, 232, 208, 0.15), transparent 62%),
    radial-gradient(90% 80% at 2% 16%, rgba(255, 122, 47, 0.11), transparent 58%),
    linear-gradient(178deg, var(--xp-void) 0%, var(--xp-navy) 100%);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: auto -18% -52% auto;
  width: 74%;
  height: 118%;
  background: linear-gradient(112deg, transparent 40%, rgba(53, 232, 208, 0.09) 40%, rgba(53, 232, 208, 0.09) 41.4%, transparent 41.4%),
    linear-gradient(112deg, transparent 58%, rgba(255, 122, 47, 0.12) 58%, rgba(255, 122, 47, 0.12) 59.2%, transparent 59.2%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
}

.page-faq .faq-hero__kicker {
  margin: 1.4rem 0 0.9rem;
  font-family: var(--xp-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--xp-cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--xp-font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7.2vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--xp-porcelain);
  max-width: 22ch;
}

.page-faq .faq-hero__lede {
  margin-top: 1.2rem;
  max-width: 60ch;
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.8rem;
}

.page-faq .faq-hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.95rem;
  font-size: 0.86rem;
  color: var(--xp-soft);
  text-decoration: none;
  background: var(--faq-panel);
  border-left: 2px solid var(--xp-cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background 200ms ease, transform 200ms ease, color 200ms ease;
}

.page-faq .faq-hero__chip:hover,
.page-faq .faq-hero__chip:focus-visible {
  background: rgba(53, 232, 208, 0.15);
  color: var(--xp-porcelain);
  transform: translateY(-4px);
}

.page-faq .faq-hero__chip .xp-num {
  color: var(--xp-cyan);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--faq-rule);
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-step {
  position: relative;
  padding: 1.6rem 1.2rem 1.7rem;
  background: var(--xp-void);
  transition: background 220ms ease, transform 220ms ease;
}

.page-faq .faq-step:hover {
  background: var(--faq-panel-deep);
  transform: translateY(-4px);
}

.page-faq .faq-step__num {
  display: block;
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  line-height: 1;
  color: var(--xp-orange);
  opacity: 0.9;
}

.page-faq .faq-step__title {
  margin: 0.7rem 0 0.5rem;
  font-family: var(--xp-font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--xp-porcelain);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--xp-soft);
}

.page-faq .faq-figure {
  margin: 2rem 0 0;
  background: var(--faq-panel-deep);
  border: 1px solid var(--faq-rule);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

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

.page-faq .faq-figure figcaption {
  padding: 0.85rem 1.1rem 1rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--xp-mist);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-figure--tree {
  background:
    linear-gradient(180deg, rgba(21, 32, 72, 0.9), rgba(7, 13, 34, 0.95));
  padding: 1.2rem 1rem 0;
}

.page-faq .faq-tree circle {
  fill: var(--xp-cyan);
  opacity: 0.82;
}

.page-faq .faq-tree__lines path {
  stroke: var(--xp-cyan);
  stroke-width: 1.2;
  opacity: 0.36;
  fill: none;
}

.page-faq .faq-tree__labels text {
  font-family: var(--xp-font-mono);
  font-size: 12px;
  fill: var(--xp-mist);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}

.page-faq .faq-index {
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-index__title {
  margin: 0 0 0.7rem;
  font-family: var(--xp-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--xp-mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.5rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: inline-block;
  white-space: nowrap;
  padding: 0.5rem 0.85rem;
  font-size: 0.86rem;
  color: var(--xp-soft);
  text-decoration: none;
  background: var(--faq-panel);
  border-left: 2px solid transparent;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--xp-cyan);
  color: var(--xp-porcelain);
  background: rgba(53, 232, 208, 0.12);
}

.page-faq .faq-answers__title {
  margin: 0 0 1.4rem;
  font-family: var(--xp-font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.6vw, 2.3rem);
  letter-spacing: -0.02em;
  color: var(--xp-porcelain);
}

.page-faq .faq-block {
  padding-top: 1.6rem;
  border-top: 1px solid var(--faq-rule);
  scroll-margin-top: 6rem;
}

.page-faq .faq-block + .faq-block {
  margin-top: 2.4rem;
}

.page-faq .faq-block:target {
  border-top-color: var(--xp-cyan);
}

.page-faq .faq-block__num {
  display: inline-block;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--xp-cyan);
}

.page-faq .faq-block__q {
  margin: 0.4rem 0 0.9rem;
  font-family: var(--xp-font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 3.6vw, 1.55rem);
  line-height: 1.35;
  color: var(--xp-porcelain);
}

.page-faq .faq-block__a {
  margin: 0 0 0.9rem;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--xp-soft);
}

.page-faq .faq-block__more {
  margin: 1rem 0 0;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--xp-mist);
}

.page-faq .faq-block__more a {
  color: var(--xp-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 208, 0.42);
  transition: color 180ms ease, border-color 180ms ease;
}

.page-faq .faq-block__more a:hover,
.page-faq .faq-block__more a:focus-visible {
  color: var(--xp-porcelain);
  border-bottom-color: var(--xp-porcelain);
}

.page-faq .faq-points {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.1rem 0 0;
  padding: 0;
}

.page-faq .faq-points__item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.42rem;
  padding: 0.45rem 0.8rem;
  font-size: 0.83rem;
  line-height: 1.5;
  color: var(--xp-soft);
  background: var(--faq-panel);
  border-left: 2px solid var(--xp-orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background 180ms ease, transform 180ms ease;
}

.page-faq .faq-points__item:hover {
  background: rgba(53, 232, 208, 0.14);
  transform: translateY(-2px);
}

.page-faq .faq-points__num {
  font-family: var(--xp-font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--xp-mint);
}

/* ---------- 尾声 ---------- */
.page-faq .faq-next__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-top: 1.6rem;
  padding-bottom: 1.6rem;
  border-top: 2px solid var(--xp-orange);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-step {
    padding: 2rem 1.5rem 2.1rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: calc(var(--xp-gutter) * 2.4) 0 calc(var(--xp-gutter) * 2.8);
  }

  .page-faq .faq-body__grid {
    grid-template-columns: minmax(196px, 232px) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 3.6rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6.5rem;
    padding: 1.1rem 1rem 1.2rem;
    border-bottom: 0;
    border-left: 1px solid var(--faq-rule);
    background: linear-gradient(180deg, rgba(14, 23, 56, 0.72), rgba(7, 13, 34, 0));
  }

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

  .page-faq .faq-index__link {
    display: block;
    white-space: normal;
  }

  .page-faq .faq-next__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    gap: 2.5rem;
    padding-top: 2.2rem;
    padding-bottom: 2.2rem;
  }

  .page-faq .faq-next__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(210px, 248px) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__chip,
  .page-faq .faq-step,
  .page-faq .faq-points__item,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-hero__chip:hover,
  .page-faq .faq-step:hover,
  .page-faq .faq-points__item:hover {
    transform: none;
  }
}