.page-faq {
  --faq-rail-w: 190px;
  --faq-gap: clamp(1.25rem, 3.5vw, 2.75rem);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb-wrap {
  padding-top: 1rem;
}
.page-faq .breadcrumb {
  font-size: .8125rem;
  color: var(--muted);
}
.page-faq .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
}
.page-faq .breadcrumb .divider {
  margin: 0 .45rem;
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.75rem, 5vw, 3.5rem) 0 clamp(2rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(25, 230, 208, .08), rgba(25, 230, 208, 0) 62%),
    linear-gradient(90deg, rgba(111, 91, 255, .07), rgba(111, 91, 255, 0) 55%),
    var(--ink);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 54, 68, .55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 54, 68, .35) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 85%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 85%);
}
.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}
.page-faq .faq-hero__main h1 {
  margin: .9rem 0 1rem;
  font-size: clamp(1.9rem, 5.4vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--white);
}
.page-faq .faq-hero__main .lede {
  max-width: 60ch;
  color: var(--silver);
  font-size: 1rem;
  line-height: 1.8;
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.75rem;
}
.page-faq .faq-hero__panel {
  padding: 1.25rem 1.25rem 1.4rem;
  background: var(--ink-2);
}
.page-faq .faq-hero__label {
  margin: 0 0 .85rem;
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-hero__facts li {
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  gap: .6rem;
  align-items: baseline;
  padding: .6rem 0;
  border-bottom: 1px dashed var(--line);
  color: var(--silver);
  font-size: .9375rem;
}
.page-faq .faq-hero__facts li:last-child {
  border-bottom: 0;
}
.page-faq .faq-hero__facts .mono {
  color: var(--cyan);
  font-size: .875rem;
}
.page-faq .faq-hero__foot {
  margin: .9rem 0 0;
  padding-top: .85rem;
  border-top: 1px solid var(--line);
  font-size: .75rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-block: clamp(1.75rem, 4.5vw, 3.5rem) clamp(2.5rem, 6vw, 5rem);
}

/* 目录索引 */
.page-faq .faq-rail {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding: 0 0 .75rem;
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}
.page-faq .faq-rail::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  white-space: nowrap;
  padding: .45rem .7rem;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--silver);
  text-decoration: none;
  font-size: .8125rem;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.page-faq .faq-rail__link .mono {
  color: var(--muted);
  font-size: .75rem;
  transition: color .18s ease;
}
.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan-edge);
  background: var(--cyan-soft);
}
.page-faq .faq-rail__link:hover .mono,
.page-faq .faq-rail__link:focus-visible .mono {
  color: var(--cyan);
}

/* ---------- 区块通用 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}
.page-faq .faq-sec {
  padding-block: clamp(1.5rem, 3.5vw, 2.5rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}
.page-faq .faq-sec:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-faq .faq-sec__head {
  max-width: 64ch;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}
.page-faq .faq-sec__head .section-title {
  margin: .7rem 0 .6rem;
  font-size: clamp(1.4rem, 3.4vw, 1.9rem);
  line-height: 1.22;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--white);
}
.page-faq .faq-sec__head .lede {
  color: var(--silver);
  font-size: .9375rem;
  line-height: 1.8;
}
.page-faq .grid.faq-split {
  align-items: start;
}

/* ---------- 新手三步 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-faq .steps__item {
  position: relative;
  padding: 1.15rem 1.15rem 1.25rem;
  border: 1px solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
}
.page-faq .steps__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), rgba(25, 230, 208, 0));
}
.page-faq .steps__num {
  display: block;
  font-size: 1.35rem;
  color: var(--cyan);
  letter-spacing: .04em;
}
.page-faq .steps__title {
  margin: .5rem 0 .5rem;
  font-size: 1.0625rem;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-faq .steps__text {
  margin: 0;
  color: var(--silver);
  font-size: .9375rem;
  line-height: 1.75;
}
.page-faq .steps__link {
  margin: .85rem 0 0;
  font-size: .8125rem;
}
.page-faq .steps__link a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px dashed var(--orange-edge);
}
.page-faq .steps__link a:hover,
.page-faq .steps__link a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 清单 ---------- */
.page-faq .faq-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}
.page-faq .faq-checklist .checklist__item {
  display: grid;
  grid-template-columns: 1.4rem minmax(0, 1fr);
  gap: .85rem;
  align-items: start;
  padding: .95rem 1rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  background: var(--ink-2);
  cursor: pointer;
  transition: border-color .18s ease, background-color .18s ease;
}
.page-faq .faq-checklist .checklist__item:hover {
  border-left-color: var(--cyan-edge);
}
.page-faq .faq-checklist .checklist__item:focus-within {
  outline: 2px solid var(--cyan-edge);
  outline-offset: 2px;
}
.page-faq .faq-checklist .checklist__item[aria-pressed="true"] {
  background: var(--cyan-soft);
  border-left-color: var(--cyan);
  border-color: var(--cyan-edge);
}
.page-faq .faq-checklist .checklist__box {
  display: block;
  width: 1.35rem;
  height: 1.35rem;
  margin-top: .1rem;
  border: 2px solid var(--line);
  position: relative;
  transition: border-color .18s ease;
}
.page-faq .faq-checklist .checklist__item[aria-pressed="true"] .checklist__box {
  border-color: var(--cyan);
}
.page-faq .faq-checklist .checklist__item[aria-pressed="true"] .checklist__box::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--cyan);
}
.page-faq .faq-checklist .checklist__text {
  min-width: 0;
}
.page-faq .faq-checklist .checklist__title {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  margin: 0 0 .35rem;
  font-size: 1rem;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-faq .faq-checklist .checklist__title .mono {
  font-size: .8125rem;
  color: var(--cyan);
}
.page-faq .faq-checklist .checklist__lead {
  margin: 0 0 .5rem;
  color: var(--silver);
  font-size: .9375rem;
  line-height: 1.7;
}
.page-faq .faq-checklist .checklist__note {
  position: relative;
  margin: 0 0 .3rem;
  padding-left: .9rem;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--muted);
}
.page-faq .faq-checklist .checklist__note::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .4rem;
  height: 1px;
  background: var(--line);
}
.page-faq .faq-checklist .checklist__note .mono {
  margin-right: .35rem;
}
.page-faq .faq-checklist .checklist__note--warn .mono {
  color: var(--orange);
}
.page-faq .faq-checklist .checklist__note--tip .mono {
  color: var(--cyan);
}

/* ---------- 图片与侧栏提示 ---------- */
.page-faq .faq-figure {
  margin: 0 0 1rem;
}
.page-faq .faq-figure .media-frame {
  border: 1px solid var(--line);
  background: var(--ink-2);
}
.page-faq .faq-figure__cap {
  margin: .6rem 0 0;
  font-size: .75rem;
  line-height: 1.65;
  color: var(--muted);
}
.page-faq .faq-side-note {
  background: var(--ink-2);
}
.page-faq .faq-side-note__label {
  margin: 0 0 .5rem;
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-faq .faq-side-note p:last-child {
  margin: 0;
  color: var(--silver);
  font-size: .875rem;
  line-height: 1.75;
}

/* ---------- 问答标签页 ---------- */
.page-faq .faq-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-bottom: 1.1rem;
}
.page-faq .faq-tabs .tabs__tab {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .8rem;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--silver);
  font-family: inherit;
  font-size: .8125rem;
  line-height: 1.2;
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.page-faq .faq-tabs .tabs__tab .mono {
  font-size: .7rem;
  color: var(--muted);
}
.page-faq .faq-tabs .tabs__tab:hover {
  border-color: var(--cyan-edge);
  color: var(--white);
}
.page-faq .faq-tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-tabs .tabs__tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 700;
}
.page-faq .faq-tabs .tabs__tab[aria-selected="true"] .mono {
  color: rgba(10, 14, 18, .7);
}
.page-faq .faq-tabs .tabs__panel[hidden] {
  display: none;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  margin-bottom: .55rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  background: var(--ink-2);
  transition: border-color .18s ease;
}
.page-faq .qa:hover {
  border-left-color: var(--violet-edge);
}
.page-faq .qa[open] {
  border-left-color: var(--violet);
}
.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: .65rem;
  padding: .85rem 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--white);
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.65;
}
.page-faq .qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--violet);
}
.page-faq .qa[open] .qa__q::after {
  content: "–";
}
.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}
.page-faq .qa__num {
  flex: 0 0 auto;
  font-size: .72rem;
  color: var(--muted);
}
.page-faq .qa__a {
  margin: 0 1rem 1rem;
  padding-top: .8rem;
  border-top: 1px dashed var(--line);
  color: var(--silver);
  font-size: .875rem;
  line-height: 1.8;
}

/* ---------- 区间表格 ---------- */
.page-faq .faq-table {
  width: 100%;
  margin-bottom: 1rem;
}
.page-faq .faq-table__cap {
  text-align: left;
  padding-bottom: .6rem;
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.page-faq .faq-table th[scope="row"] {
  color: var(--cyan);
  font-size: .8125rem;
  white-space: nowrap;
}
.page-faq .faq-table td {
  color: var(--silver);
  font-size: .875rem;
  line-height: 1.7;
}
.page-faq .faq-note {
  margin: 0;
  padding: .85rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  background: var(--ink-2);
  color: var(--silver);
  font-size: .875rem;
  line-height: 1.8;
}
.page-faq .faq-note--wide {
  margin-top: 1.25rem;
}
.page-faq .faq-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--cyan-edge);
}
.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 苹果设备要点 ---------- */
.page-faq .ios-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-faq .ios-points__item {
  padding: 1.1rem 1.15rem 1.2rem;
  border: 1px solid var(--line);
  border-top: 3px solid var(--violet);
  background: linear-gradient(160deg, rgba(111, 91, 255, .12), rgba(111, 91, 255, 0) 58%), var(--ink-2);
}
.page-faq .ios-points__label {
  margin: 0 0 .5rem;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--violet);
}
.page-faq .ios-points__title {
  margin: 0 0 .5rem;
  font-size: 1rem;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-faq .ios-points__item p:last-child {
  margin: 0;
  color: var(--silver);
  font-size: .875rem;
  line-height: 1.8;
}

/* ---------- 咨询前准备 ---------- */
.page-faq .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}
.page-faq .prep-list__item {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: .7rem;
  align-items: start;
  padding: .8rem .9rem;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--silver);
  font-size: .875rem;
  line-height: 1.75;
}
.page-faq .prep-list__num {
  color: var(--orange);
  font-size: .8rem;
  padding-top: .12rem;
}
.page-faq .faq-contact-card {
  background: var(--ink-2);
}
.page-faq .faq-contact-card__label {
  margin: 0 0 .8rem;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-faq .faq-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-contact-list .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
  padding: .65rem 0;
  border-bottom: 1px dashed var(--line);
}
.page-faq .faq-contact-list .contact-key {
  flex: 0 0 5rem;
  font-size: .75rem;
  color: var(--muted);
}
.page-faq .faq-contact-list .contact-val {
  flex: 1 1 12rem;
  min-width: 0;
  color: var(--white);
  font-size: .875rem;
  line-height: 1.6;
  word-break: break-word;
}
.page-faq .faq-contact-list .copy-btn {
  flex: 0 0 auto;
  padding: .3rem .6rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: .7rem;
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.page-faq .faq-contact-list .copy-btn:hover,
.page-faq .faq-contact-list .copy-btn:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan-edge);
  background: var(--cyan-soft);
}
.page-faq .faq-contact-card__note {
  margin: 1rem 0 1.2rem;
  color: var(--silver);
  font-size: .8125rem;
  line-height: 1.8;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .ios-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .95fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(1.75rem, 3.5vw, 3.25rem);
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
    flex-direction: column;
    overflow: visible;
    padding: 0 0 0 .9rem;
    border-bottom: 0;
    border-left: 2px solid var(--line);
  }
  .page-faq .faq-rail__link {
    border: 0;
    background: transparent;
    padding: .3rem 0;
    white-space: normal;
  }
  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: transparent;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-sec {
    padding-block: clamp(2rem, 4vw, 3rem);
  }
}
<<<END>>>