.page-faq {
  background:
    radial-gradient(120% 70% at 88% -8%, rgba(18, 49, 77, 0.85), transparent 62%),
    var(--ink-800);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: clamp(2rem, 6vw, 4rem);
}

.page-faq .crumb {
  padding-top: clamp(1rem, 2.5vw, 1.5rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, rgba(143, 163, 184, 0.09) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(to bottom, rgba(143, 163, 184, 0.09) 0 1px, transparent 1px 64px);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 76%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 7.4vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 13em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--line-gold);
  color: rgba(242, 232, 213, 0.84);
  font-size: clamp(0.94rem, 2.3vw, 1.02rem);
  line-height: 1.85;
}

.page-faq .faq-jump {
  position: relative;
  list-style: none;
  margin: clamp(1.4rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.75rem 0.2rem;
  text-decoration: none;
  color: var(--paper);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--gold);
  padding-left: 0.55rem;
}

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-jump__label {
  font-size: 0.94rem;
  font-weight: 600;
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-steps {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps__head {
  display: grid;
  gap: 0.55rem;
  max-width: 46em;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-steps__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.6vw, 2.15rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-faq .faq-steps__lede {
  margin: 0;
  color: rgba(242, 232, 213, 0.78);
  font-size: 0.96rem;
  line-height: 1.8;
}

.page-faq .faq-steps__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-faq .step {
  position: relative;
  padding: 1.15rem 1.05rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 49, 77, 0.55), rgba(7, 17, 28, 0.32));
  box-shadow: var(--shadow-card);
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 1.05rem;
  top: 0;
  width: 44px;
  height: 2px;
  background: var(--gold);
}

.page-faq .step__num {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-faq .step__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.03rem;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .step__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(242, 232, 213, 0.78);
}

.page-faq .step__text a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .step__text a:hover {
  color: var(--paper);
}

.page-faq .faq-steps__tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1rem;
  margin-top: 1.1rem;
}

.page-faq .faq-steps__hint {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-900);
  overflow: hidden;
}

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

.page-faq .faq-figure__cap {
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-figure--device {
  margin-top: 1.5rem;
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(1rem, 3vw, 1.5rem);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-index {
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.5rem;
}

.page-faq .faq-index__link {
  display: block;
  padding: 0.4rem 0 0.4rem 0.7rem;
  border-left: 2px solid var(--line-soft);
  color: rgba(242, 232, 213, 0.72);
  font-size: 0.88rem;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--gold);
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--gold);
  border-left-color: var(--cinnabar);
  font-weight: 700;
}

.page-faq .faq-index__top {
  justify-self: start;
  margin-top: 0.45rem;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--mist);
  text-decoration: none;
}

.page-faq .faq-index__top:hover {
  color: var(--gold);
  border-bottom-color: var(--line-gold);
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec + .faq-sec {
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-sec__title {
  margin: 0.45rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-sec__lede {
  margin: 0.7rem 0 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: rgba(242, 232, 213, 0.78);
}

.page-faq .faq-sec__lede a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .faq-sec__note {
  margin: 1rem 0 0;
  padding-left: 0.8rem;
  border-left: 2px solid var(--cinnabar);
  font-size: 0.84rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 版本列表 ---------- */
.page-faq .verlist {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .verlist__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.2rem 0.85rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .verlist__tag {
  justify-self: start;
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--line-gold);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--gold);
  white-space: nowrap;
}

.page-faq .verlist__txt {
  font-size: 0.92rem;
  line-height: 1.72;
  color: rgba(242, 232, 213, 0.84);
}

.page-faq .verlist__time {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .acc {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .acc:first-of-type {
  margin-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .acc > summary {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem 0.65rem;
  padding: 0.9rem 2rem 0.9rem 0;
  list-style: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-faq .acc > summary::after {
  content: "+";
  position: absolute;
  right: 0.3rem;
  top: 0.72rem;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--gold);
  transition: color 0.2s var(--ease);
}

.page-faq .acc[open] > summary::after {
  content: "\2212";
  color: var(--cinnabar);
}

.page-faq .acc > summary:hover {
  color: var(--gold);
}

.page-faq .acc__tag {
  padding: 0.1rem 0.35rem;
  border: 1px solid rgba(62, 140, 126, 0.5);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--jade);
  white-space: nowrap;
}

.page-faq .acc__body {
  padding: 0 1.4rem 1.05rem 0;
}

.page-faq .acc__body p {
  margin: 0 0 0.55rem;
  font-size: 0.91rem;
  line-height: 1.82;
  color: rgba(242, 232, 213, 0.8);
}

.page-faq .acc__body p:last-child {
  margin-bottom: 0;
}

.page-faq .acc__body a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

/* ---------- 联系卡 ---------- */
.page-faq .faq-contact {
  border-top: 1px solid var(--line);
}

.page-faq .faq-contactcard {
  padding: clamp(1.25rem, 3.2vw, 2rem);
  border: 1px solid rgba(7, 17, 28, 0.18);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink-text);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-contactcard__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
}

.page-faq .faq-contactcard__title {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.4vw, 1.7rem);
  line-height: 1.35;
  color: var(--ink-900);
}

.page-faq .faq-contactcard__lede {
  margin: 0.6rem 0 0;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--ink-text-soft);
}

.page-faq .faq-contactcard__list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-contactcard__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink-text-soft);
}

.page-faq .faq-contactcard__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 0.5rem;
  height: 1px;
  background: var(--cinnabar);
}

.page-faq .contactrows {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(7, 17, 28, 0.15);
}

.page-faq .contactrow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.75rem;
  align-items: baseline;
}

.page-faq .contactrow__key {
  min-width: 3.2em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--ink-text-soft);
}

.page-faq .contactrow__val {
  font-size: 0.88rem;
  line-height: 1.72;
  font-weight: 600;
  color: var(--ink-900);
}

.page-faq .faq-contactcard__foot {
  margin: 1rem 0 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--ink-text-soft);
}

.page-faq .faq-contactcard__foot a {
  color: var(--cinnabar);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(194, 69, 45, 0.45);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-jump li:nth-last-child(1):nth-child(odd) {
    grid-column: 1 / -1;
  }

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

  .page-faq .step:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .step:first-child {
    grid-column: auto;
  }

  .page-faq .verlist__row {
    grid-template-columns: 96px minmax(0, 1fr) 108px;
    align-items: baseline;
  }

  .page-faq .verlist__time {
    grid-column: auto;
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
    align-items: end;
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-faq .faq-hero__side {
    padding-bottom: 0.4rem;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-jump li,
  .page-faq .faq-jump li:nth-last-child(1):nth-child(odd) {
    grid-column: auto;
    border-bottom: 0;
    border-right: 1px solid var(--line-soft);
  }

  .page-faq .faq-jump li:last-child {
    border-right: 0;
  }

  .page-faq .faq-jump a {
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.85rem 0.75rem;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .faq-jump a:focus-visible {
    padding-left: 0.75rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 88px;
    gap: 0.4rem;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-faq .faq-index__link {
    padding: 0.45rem 0 0.45rem 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-index__link,
  .page-faq .acc > summary,
  .page-faq .acc > summary::after {
    transition: none;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .faq-jump a:focus-visible {
    padding-left: 0.2rem;
  }
}
<<<END>>>