.page-faq {
  --faq-rail-w: 232px;
  --faq-cat-channel: var(--amber);
  --faq-cat-version: var(--cyan);
  --faq-cat-record: var(--violet);
  --faq-cat-fav: var(--moss);
  padding-bottom: clamp(40px, 6vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 3.4vw, 46px) 0 clamp(22px, 2.8vw, 36px);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--line) 0%, rgba(120, 150, 200, 0) 62%);
}
.page-faq .faq-hero h1 {
  margin: 14px 0 16px;
  font-size: clamp(29px, 4.2vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--bone);
  max-width: 22ch;
}
.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 66ch;
  color: var(--ink-2);
}
.page-faq .faq-hero .data-strip {
  margin-top: clamp(24px, 3vw, 38px);
}

/* ---------- 条形信息图 ---------- */
.page-faq .faq-band {
  padding: clamp(22px, 3vw, 40px) 0 clamp(30px, 4.4vw, 58px);
}
.page-faq .faq-figure {
  margin: 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: var(--slate);
  object-fit: cover;
}
.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

/* ---------- 索引 + 问答双栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}
@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 3.6vw, 56px);
  }
}

.page-faq .faq-rail {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 16px 14px;
  background: var(--glass-soft);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
@media (min-width: 1000px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 92px;
  }
}
.page-faq .faq-rail .rail__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--rock);
}
.page-faq .faq-rail .rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-rail .rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  color: var(--ink-2);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.page-faq .faq-rail .rail__link::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.55;
}
.page-faq .faq-rail .rail__link:hover {
  color: var(--bone);
  background: var(--glass);
}
.page-faq .faq-rail .rail__link.is-active {
  color: var(--bone);
  background: var(--glass);
  border-left-color: var(--cyan);
}
.page-faq .faq-rail__count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--rock);
}
.page-faq .faq-rail .rail__link.is-active .faq-rail__count {
  color: var(--cyan);
}
@media (max-width: 999px) {
  .page-faq .faq-rail .rail__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
  }
  .page-faq .faq-rail .rail__list > li {
    flex: 0 0 auto;
  }
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 36px);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 104px;
  margin-bottom: clamp(30px, 4vw, 52px);
}
.page-faq .faq-group:last-child {
  margin-bottom: 0;
}
.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}
.page-faq .faq-group__head::before {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--rock);
}
.page-faq .faq-group--channel .faq-group__head::before { background: var(--faq-cat-channel); }
.page-faq .faq-group--version .faq-group__head::before { background: var(--faq-cat-version); }
.page-faq .faq-group--record .faq-group__head::before { background: var(--faq-cat-record); }
.page-faq .faq-group--favorite .faq-group__head::before { background: var(--faq-cat-fav); }
.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--bone);
}
.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rock);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq__item {
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq__h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}
.page-faq .faq__q {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px;
  background: none;
  border: 0;
  color: var(--bone);
  font-family: inherit;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s ease;
}
.page-faq .faq__q:hover {
  color: var(--cyan);
}
.page-faq .faq__label {
  flex: 1 1 auto;
}
.page-faq .faq__dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-top: 0.5em;
  background: var(--rock);
  transition: background 0.25s ease, box-shadow 0.25s ease;
}
.page-faq .faq__q[aria-expanded="true"] .faq__dot {
  background: var(--moss);
  box-shadow: 0 0 0 4px rgba(111, 191, 139, 0.16);
}
.page-faq .faq__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 0.5em;
}
.page-faq .faq__mark::before,
.page-faq .faq__mark::after {
  content: "";
  position: absolute;
  background: var(--rock);
  transition: transform 0.25s ease, background 0.25s ease;
}
.page-faq .faq__mark::before {
  left: 0;
  top: 6.5px;
  width: 14px;
  height: 1.5px;
}
.page-faq .faq__mark::after {
  left: 6.5px;
  top: 0;
  width: 1.5px;
  height: 14px;
}
.page-faq .faq__q[aria-expanded="true"] .faq__mark::after {
  transform: scaleY(0);
}
.page-faq .faq__q[aria-expanded="true"] .faq__mark::before {
  background: var(--cyan);
}
.page-faq .faq__a {
  display: none;
  padding: 0 4px 18px 25px;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.75;
}
.page-faq .faq__a.is-open {
  display: block;
}
.page-faq .faq__a p {
  margin: 0;
}
.page-faq .faq__a p + p {
  margin-top: 0.8em;
}
.page-faq .faq__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(67, 245, 220, 0.35);
}
.page-faq .faq__a a:hover {
  border-bottom-color: var(--cyan);
}
.page-faq .faq-mark {
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 1px;
}

/* ---------- 通用小标题 ---------- */
.page-faq .faq-h2 {
  margin: 12px 0 12px;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--bone);
  max-width: 26ch;
}
.page-faq .faq-sub {
  margin: 0;
  max-width: 66ch;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 两条通道怎么选 ---------- */
.page-faq .faq-pick {
  padding: clamp(44px, 6vw, 84px) 0 clamp(40px, 5.4vw, 76px);
}
.page-faq .faq-pick__dual {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 24px);
  margin-top: clamp(22px, 3vw, 36px);
}
@media (min-width: 820px) {
  .page-faq .faq-pick__dual {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.page-faq .faq-pick__dual .channel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--panel);
}
.page-faq .faq-pick__dual .channel--latest {
  border-top: 3px solid var(--amber);
}
.page-faq .faq-pick__dual .channel--apple {
  border-top: 3px solid var(--silver-b);
}
.page-faq .faq-pick__dual .channel__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.page-faq .faq-pick__dual .channel__name {
  margin: 0;
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.page-faq .faq-pick__dual .channel--latest .channel__name {
  color: var(--amber);
}
.page-faq .faq-pick__dual .channel--apple .channel__name {
  color: var(--silver-a);
}
.page-faq .faq-pick__dual .channel__badge {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid currentColor;
  color: var(--rock);
}
.page-faq .faq-pick__dual .channel--latest .channel__badge {
  color: var(--amber);
}
.page-faq .faq-pick__dual .channel--apple .channel__badge {
  color: var(--silver-b);
}
.page-faq .faq-pick__dual .channel__ver {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--ink-2);
}
.page-faq .faq-pick__dual .channel__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: chstep;
  flex: 1 1 auto;
}
.page-faq .faq-pick__dual .channel__steps li {
  position: relative;
  counter-increment: chstep;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-3);
}
.page-faq .faq-pick__dual .channel__steps li::before {
  content: counter(chstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.25em;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--rock);
}
.page-faq .faq-pick__dual .btn {
  align-self: flex-start;
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-check {
  padding: clamp(36px, 5vw, 70px) 0 clamp(40px, 5.4vw, 76px);
}
.page-faq .faq-check__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 52px);
  align-items: start;
}
@media (min-width: 900px) {
  .page-faq .faq-check__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
  }
}
.page-faq .faq-steps {
  list-style: none;
  position: relative;
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding: 0 0 0 20px;
  counter-reset: check;
}
.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: var(--line-soft);
}
.page-faq .faq-steps li {
  position: relative;
  counter-increment: check;
  padding: 0 0 26px 46px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-2);
}
.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}
.page-faq .faq-steps li::before {
  content: counter(check, decimal-leading-zero);
  position: absolute;
  left: -17px;
  top: -2px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 12px;
}
.page-faq .faq-steps li strong {
  color: var(--bone);
  font-weight: 600;
}

/* ---------- 联系收口 ---------- */
.page-faq .faq-reach {
  padding: 0 0 clamp(40px, 5.4vw, 76px);
}
.page-faq .faq-reach__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 42px);
  padding: clamp(22px, 3vw, 38px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
}
@media (min-width: 820px) {
  .page-faq .faq-reach__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }
}
.page-faq .faq-reach__list {
  list-style: none;
  margin: 18px 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-reach__list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink-3);
}
.page-faq .faq-reach__list .mono {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--cyan);
}
.page-faq .faq-reach__side {
  display: grid;
  gap: 14px;
  align-content: start;
  padding-left: clamp(18px, 2.4vw, 32px);
  border-left: 1px solid var(--line-soft);
}
@media (max-width: 819px) {
  .page-faq .faq-reach__side {
    padding-left: 0;
    padding-top: 20px;
    border-left: 0;
    border-top: 1px solid var(--line-soft);
  }
}
.page-faq .faq-reach__line {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}
.page-faq .faq-reach__tag {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--rock);
}
.page-faq .faq-reach__line .mono {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--bone);
  word-break: break-word;
}
.page-faq .faq-reach__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}
.page-faq .faq-reach__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(67, 245, 220, 0.35);
}
.page-faq .faq-reach__note a:hover {
  border-bottom-color: var(--cyan);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq__q,
  .page-faq .faq__dot,
  .page-faq .faq__mark::before,
  .page-faq .faq__mark::after,
  .page-faq .faq-rail .rail__link {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>