.page-faq {
  background: var(--ice);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-faq .faq-wrap {
  padding-top: clamp(1rem, 3vw, 2rem);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(1rem, 2.5vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-faq .help-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--line-ink-strong);
}

.page-faq .help-intro__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-caption);
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .help-intro h1 {
  margin: 0.45rem 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 6.2vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  max-width: 20ch;
}

.page-faq .help-intro__lead {
  margin: 0;
  max-width: 58ch;
  font-size: var(--step-body);
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .help-board {
  position: relative;
  align-self: start;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--ice);
  overflow: hidden;
}

.page-faq .help-board::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 12px, transparent 12px 22px);
}

.page-faq .help-board__label {
  margin: 0.35rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .help-board__list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .help-board__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: baseline;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line-ice);
}

.page-faq .help-board__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .help-board__num {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
  white-space: nowrap;
}

.page-faq .help-board__txt {
  font-size: var(--step-caption);
  line-height: 1.5;
  color: rgba(244, 247, 248, 0.9);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

/* ---------- 排查路径 ---------- */
.page-faq .help-rail {
  align-self: start;
  padding: 0.75rem;
  border: 1px solid var(--line-ink);
  border-radius: var(--radius);
  background: var(--cream);
}

.page-faq .help-rail__label {
  margin: 0 0 0.55rem;
  padding-left: 0.2rem;
  font-family: var(--font-mono);
  font-size: var(--step-caption);
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.page-faq .tree {
  list-style: none;
  margin: 0;
  padding: 0 0 0.2rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .tree__node {
  flex: 0 0 auto;
}

.page-faq .tree__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.45rem;
  min-width: 8.75rem;
  min-height: 44px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line-ink-strong);
  border-radius: var(--radius);
  background: var(--ice);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .tree__link:hover,
.page-faq .tree__link:focus-visible {
  border-color: var(--cyan-deep);
  background: var(--frost);
  transform: translateY(-1px);
}

.page-faq .tree__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan-deep);
}

.page-faq .tree__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.15;
}

.page-faq .tree__sub {
  display: none;
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--ink-soft);
}

/* ---------- 章节 ---------- */
.page-faq .faq-main {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  min-width: 0;
}

.page-faq .hs {
  padding: clamp(1rem, 2.5vw, 1.6rem);
  border: 1px solid var(--line-ink);
  border-radius: var(--radius);
  background: var(--cream);
  min-width: 0;
}

.page-faq .hs__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.5rem 0.75rem;
  align-items: baseline;
  padding-bottom: 0.9rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .hs__num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-faq .hs__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.15;
  min-width: 0;
}

.page-faq .hs__note {
  grid-column: 2;
  margin: 0.3rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-faq .hs__body--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

/* ---------- 手风琴 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 0.6rem;
  align-content: start;
  min-width: 0;
}

.page-faq .qa {
  border: 1px solid var(--line-ink);
  border-radius: var(--radius);
  background: var(--ice);
  overflow: hidden;
  transition: border-color 200ms var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--cyan-deep);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.6rem;
  padding: 0.85rem 0.9rem;
  list-style: none;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9875rem;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-faq .qa__q:hover {
  background: var(--frost);
}

.page-faq .qa__idx {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan-deep);
  padding-top: 0.2rem;
}

.page-faq .qa__arrow {
  width: 8px;
  height: 8px;
  margin-top: 0.5rem;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(45deg);
  transition: transform 220ms var(--ease);
}

.page-faq .qa[open] .qa__arrow {
  transform: rotate(-135deg);
}

.page-faq .qa__a {
  padding: 0 0.9rem 1rem;
}

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.6rem;
  align-items: start;
}

.page-faq .steps__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.6;
  color: var(--moss);
  border: 1px solid var(--line-ink);
  border-radius: 2px;
  padding: 0 0.3rem;
}

.page-faq .steps p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

.page-faq .qa__result {
  margin: 0.8rem 0 0;
  padding-left: 0.75rem;
  border-left: 2px solid var(--cyan);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--ink);
}

.page-faq .qa__a a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line-ink);
  border-radius: var(--radius);
  background: var(--frost);
  overflow: hidden;
}

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

.page-faq .faq-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-faq .faq-figure--tall {
  max-width: 260px;
  margin-inline: auto;
}

.page-faq .faq-figure--tall img {
  aspect-ratio: 3 / 4;
}

.page-faq .faq-figure__cap {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.4;
  padding: 0.5rem 0.75rem;
  border-top: 1px solid var(--line-ink);
  color: var(--ink-soft);
  background: var(--ice);
}

/* ---------- 清单卡 ---------- */
.page-faq .checklist-card {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border: 1px dashed var(--line-ink-strong);
  border-radius: var(--radius);
  background: var(--ice);
}

.page-faq .checklist-card__label {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--step-caption);
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-faq .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.2rem;
}

.page-faq .checklist label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.6rem;
  min-height: 44px;
  padding: 0.35rem 0.45rem;
  border-radius: 2px;
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--ink-soft);
  cursor: pointer;
}

.page-faq .checklist label:hover {
  background: var(--frost);
}

.page-faq .checklist input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--cyan-deep);
  flex: none;
}

/* ---------- 联系支持 ---------- */
.page-faq .hs--support {
  background: var(--ink);
  color: var(--ice);
  border-color: var(--ink-line);
}

.page-faq .hs--support .hs__head {
  border-bottom-color: var(--line-ice);
}

.page-faq .hs--support .hs__num {
  color: var(--cyan);
}

.page-faq .hs--support .hs__title {
  color: var(--ice);
}

.page-faq .hs--support .hs__note {
  color: rgba(244, 247, 248, 0.82);
}

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

.page-faq .support-list li {
  padding-left: 0.8rem;
  border-left: 2px solid var(--ink-line);
  min-width: 0;
}

.page-faq .support-term {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-bottom: 0.2rem;
}

.page-faq .support-desc {
  display: block;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ice);
  overflow-wrap: anywhere;
}

.page-faq .support-note {
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(244, 247, 248, 0.82);
}

.page-faq .support-link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

/* ---------- 桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .hs__body--split {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: start;
  }

  .page-faq .faq-figure--square {
    align-self: stretch;
  }

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

@media (min-width: 900px) {
  .page-faq .help-intro {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .help-rail {
    position: sticky;
    top: 1.25rem;
    padding: 1rem;
  }

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

  .page-faq .tree__node {
    position: relative;
    padding: 0 0 0.55rem 1.1rem;
  }

  .page-faq .tree__node::before {
    content: "";
    position: absolute;
    left: 3px;
    top: 1.35rem;
    bottom: 0;
    width: 2px;
    background: var(--line-ink);
  }

  .page-faq .tree__node:last-child::before {
    display: none;
  }

  .page-faq .tree__node::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0.95rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--moss);
  }

  .page-faq .tree__link {
    display: block;
    min-width: 0;
    min-height: 0;
    padding: 0.2rem 0.25rem;
    border: 0;
    background: transparent;
    border-radius: 2px;
  }

  .page-faq .tree__link:hover,
  .page-faq .tree__link:focus-visible {
    background: var(--frost);
    transform: none;
  }

  .page-faq .tree__num {
    display: inline-block;
    margin-right: 0.4rem;
  }

  .page-faq .tree__name {
    display: inline;
  }

  .page-faq .tree__sub {
    display: block;
    margin-top: 0.15rem;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: clamp(1.75rem, 3vw, 3rem);
  }

  .page-faq .hs__body--split {
    grid-template-columns: minmax(0, 1fr) 240px;
  }
}

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

  .page-faq .tree__link:hover,
  .page-faq .tree__link:focus-visible {
    transform: none;
  }
}
<<<END>>>