.page-faq {
  --faq-ink: #0B2545;
  --faq-ink-soft: #46617F;
  --faq-line: rgba(11, 37, 69, .14);
  display: block;
  padding-bottom: 72px;
}

/* 面包屑与首屏 */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  font-size: .8125rem;
  color: var(--muted);
}

.page-faq .crumbs .link {
  color: var(--muted);
}

.page-faq .crumbs .link:hover {
  color: var(--cyan);
}

.page-faq .faq-hero {
  padding-top: 26px;
}

.page-faq .faq-hero__grid {
  align-items: center;
}

.page-faq .faq-hero__title {
  margin: 10px 0 16px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.75rem, 4.4vw, 3.25rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-faq .faq-hero__sub {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-faq .faq-hero__note {
  margin: 18px 0 0;
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--cyan-deep);
}

.page-faq .faq-hero__figure {
  margin: 26px 0 0;
}

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

/* 章节标题行 */
.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 26px;
}

.page-faq .faq-head .section-head__title {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text);
  margin: 6px 0 0;
}

.page-faq .faq-head__meta {
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* 三步路径图 */
.page-faq .faq-path {
  margin-top: 58px;
}

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

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

.page-faq .pathmap__link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 20px 20px 22px;
  background: linear-gradient(160deg, rgba(33, 230, 193, .09), rgba(11, 37, 69, .9) 62%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--panel-shadow);
  text-decoration: none;
  transition: border-color var(--base) var(--ease), transform var(--base) var(--ease);
}

.page-faq .pathmap__link:hover,
.page-faq .pathmap__link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-faq .pathmap__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-size: 1rem;
  letter-spacing: .04em;
}

.page-faq .pathmap__name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
}

.page-faq .pathmap__hint {
  font-size: .875rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 通用区块与面板 */
.page-faq .faq-block {
  margin-top: 58px;
}

.page-faq .faq-block--last {
  margin-top: 64px;
}

.page-faq .faq-block__grid {
  align-items: start;
  row-gap: 18px;
}

.page-faq .faq-lead {
  margin: 0 0 18px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .faq-lead--wide {
  max-width: 76ch;
  margin: -6px 0 24px;
  color: var(--muted);
}

.page-faq .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .checklist li {
  position: relative;
  padding-left: 26px;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 12px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-sidecard {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-sidecard__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-sidecard .btn {
  align-self: stretch;
}

/* 维度列表 */
.page-faq .dimlist {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .dimlist__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 16px;
  background: var(--ink-850);
}

.page-faq .dimlist__key {
  font-size: .875rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .dimlist__val {
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 版本清单 */
.page-faq .verlist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .verlist li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-soft);
  font-size: .875rem;
  color: var(--muted);
}

.page-faq .verlist li .mono {
  color: var(--amber);
  font-size: .8125rem;
  letter-spacing: .08em;
  min-width: 76px;
}

/* 双端对照 */
.page-faq .platforms {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .platform {
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-left-width: 2px;
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--panel-shadow);
}

.page-faq .platform--ios {
  border-left-color: var(--magenta);
}

.page-faq .platform--android {
  border-left-color: var(--violet);
}

.page-faq .platform__tag {
  margin: 0;
  font-size: .8125rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.page-faq .platform--ios .platform__tag {
  color: var(--magenta);
}

.page-faq .platform--android .platform__tag {
  color: var(--violet);
}

.page-faq .platform__title {
  margin: 8px 0 14px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.4;
  color: var(--text);
}

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

.page-faq .platform__list li {
  position: relative;
  padding-left: 18px;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .platform__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: .55;
}

.page-faq .faq-dual-figure {
  margin: 26px 0 0;
}

/* FAQ 阅读区 */
.page-faq .faq-zone {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 22px 18px 26px;
  background: var(--paper);
  color: var(--faq-ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--panel-shadow);
}

.page-faq .faq-index {
  border-bottom: 1px solid var(--faq-line);
  padding-bottom: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: .75rem;
  letter-spacing: .2em;
  color: var(--faq-ink-soft);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 14px;
}

.page-faq .faq-index__list li a {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 4px 0;
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--faq-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-faq .faq-index__list li a .mono {
  color: var(--faq-ink-soft);
  font-size: .75rem;
}

.page-faq .faq-index__list li a:hover,
.page-faq .faq-index__list li a:focus-visible {
  color: #067a67;
  border-bottom-color: #067a67;
}

.page-faq .qa {
  display: grid;
}

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

.page-faq .qa__item:first-child {
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa__q {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--faq-ink);
  transition: color var(--fast) var(--ease);
}

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

.page-faq .qa__q:hover {
  color: #067a67;
}

.page-faq .qa__no {
  flex: none;
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--faq-ink-soft);
}

.page-faq .qa__q > span:last-child::after {
  content: " +";
  color: #0FA98F;
  font-weight: 700;
}

.page-faq .qa__item[open] .qa__q > span:last-child::after {
  content: " −";
}

.page-faq .qa__item[open] .qa__q {
  color: #067a67;
}

.page-faq .qa__a {
  padding: 0 4px 18px 30px;
  animation: faq-fade 200ms var(--ease);
}

.page-faq .qa__a p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa__a .link {
  color: #067a67;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }

  .page-faq .pathmap__link {
    transition: none;
  }
}

/* 平板及以上 */
@media (min-width: 700px) {
  .page-faq .dimlist__row {
    grid-template-columns: 88px 1fr;
    align-items: baseline;
    gap: 16px;
  }

  .page-faq .faq-zone {
    padding: 26px 26px 30px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 桌面 */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 34px;
  }

  .page-faq .faq-hero__figure {
    margin-top: 0;
  }

  .page-faq .pathmap {
    grid-template-columns: repeat(3, 1fr);
    gap: 42px;
  }

  .page-faq .pathmap__node:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 41px;
    right: -34px;
    width: 26px;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), rgba(33, 230, 193, .12));
    pointer-events: none;
  }

  .page-faq .platforms {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-faq .faq-zone {
    grid-template-columns: 240px 1fr;
    gap: 34px;
    padding: 30px 32px 34px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 118px;
    align-self: start;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    border-bottom: none;
    padding-bottom: 0;
    border-right: 1px solid var(--faq-line);
    padding-right: 20px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
    gap: 2px 0;
  }
}

/* 宽屏微调 */
@media (min-width: 1120px) {
  .page-faq .faq-block,
  .page-faq .faq-path {
    margin-top: 68px;
  }

  .page-faq .faq-lead {
    font-size: 1.0625rem;
  }
}
<<<END>>>